Saturday, 16 September 2017

Two Failures

On Sunday 20th August 2017, I was driver at the Battlefield Line, once again on 'Cumbria', an 'Austerity' tank locomotive. You might imagine that regularly driving on the same line would lead to boredom, but no two days are the same and this one certainly didn't turn out as planned.

There was a 'Gold' footplate experience course booked so I signed on at 06:30. Our lady fireman, Tracey, was 'booked fireman' but on that day she was observing our trainee, Ritchie, with a view to his becoming a 'Passed Cleaner' which would enable him to act as a fireman in his own right in the future. When I arrived Tracey and Ritchie had already done the initial checks and lit-up, so I set-to oiling and examining the locomotive.

An intimation of the problem to come was quickly revealed as I found the left leading spring with a broken 'leaf' near the buckle and the rear portion of the leaf was working its way out of the buckle.

In steam locomotive design, the weight of the engine is transferred to the wheels via springs connected to axleboxes arranged to slide up and down in hornguides attached to the main frames. Some vertical movement of the axlebox is possible as the spring deflects from its 'rest' position', but the tension in the spring then acts as a restoring force to return the axlebox to its 'rest' position. Each 'wheelset' (an axle with two wheels) has two axleboxes embracing two machined areas on the axle (the journals) so that each wheel has 'independent suspension' allowing it to rise and fall, following 'bumps' in the track.

Various types of spring are used but the laminated leaf spring, as used on the 'Austerity' tank, is most common. Two arrangements are possible with laminated springs, depending upon whether the spring is mounted above or below the associated axlebox. The 'Austerity' tank is 'undersprung' where each end of the spring is connected, via links which allow the spring to 'flex', to the main frames and the buckle in the middle of the spring is connected to the bottom of the axlebox.


'Austerity' Elevation showing 'undersprung' laminated springs on each axle (Industrial Railway Record).


This picture shows the (undamaged) spring on the left leading axlebox of 'Austerity' tank 'Royal Pioneer'. The long, round horizontal rod across the foreground is part of the brake rigging.

There were no maintenance staff on duty at Shackerstone and, even if there had been, jacking-up the engine and changing a main spring would have made us very late into traffic, jeopardising both the footplate experience course and the advertised service. Resident Peckett locomotive 'Sir Gomer' was standing next in line in the shed but completely cold. I didn't even consider using 'Sir Gomer' because, even if fit for traffic, the time to bring the cold locomotive into steam would have meant no trains until the afternoon.
In the days of steam on post-war railways various techniques were adopted in emergency to reduce the time it took to make an engine steam but the more 'agressive' techniques tended to reduce boiler life and increase maintenance costs. The coefficient of expansion of metals means that when a boiler is brought to working temperature, the dimensions increase. If this is done too quickly, the stresses on rivets, stays and boiler tubes may result in leaks. I think I worked out that the boiler on a Great Western 'Castle', for example, becomes about half an inch longer when hot (and the design allows the firebox to slide on supports to accommodate this expansion). Some sheds kept a flexible hose attached to a long hooked pipe. The hooked pipe was lowered into the chimney of the engine to be steamed and the hose was attached to another engine already in steam. Allowing steam to flow through the pipe and escape from the chimney provided a draught to 'encourage' steaming in the way that the Blower stimulates the fire on an engine already in steam. Another approach was to couple the engine to be steamed to a second locomotive and drag it up and down the yard with the reverser of the engine to be steamed set in the 'wrong' direction. The cylinders acted as air pumps, pressurising the boiler with compressed air. When the Blower Valve was opened, the escaping compressed air provided a draught to the fire (at least briefly).
As an alternative, I found a large sledge hammer and, as carefully as I could, hammered the protruding section of the broken spring leaf back towards its original position. In the limited time available, that was as much as I could do and I decided that I would take the locomotive into traffic and keep my eye on it during the day.

Our driver on the 'Gold Experience' course arrived early and we set off light engine for Shenton, with me explaining the use of the driving controls and the need to comply with the various speed restrictions along the line. We returned to Shackerstone and coupled onto the waiting train. By this time, our 'Gold' driver's family had arrived and they boarded the train as I introduced the complications of the vacuum brake which we'd be using on this trip. We made and uneventful trip to Shenton, uncoupled and 'ran round' then returned to Shackerstone. Our 'Gold' driver had performed well and had clearly had a most enjoyable time. We all said 'good bye', uncoupled, ran round, watered and prepared to take the 11.15 a.m. train which departed a few minutes late.


'Cumbria' ready to leave Shackerstone on an earlier date.

We completed three of the five 'booked' round trips but, by this time, the broken spring leaf had worked its way back out a few inches and my attempts to persuade it to return nearer to its correct position were not successful. Not wanting to risk a complete failure down the line (with the risk of 'stranding' passengers) I decided to 'fail' the locomotive. We believed the Diesel Multiple Unit (DMU) was serviceable so it was agreed that Ritchie would go and start-up the DMU whilst Tracey and I limped onto shed and disposed of the steam locomotive.

I need to introduce a little background here. I have described my previous turn on the DMU on Wednesday 2nd August 2017 in the post Summer at Shackerstone when we were using the 2-car set (51131/51321). After that turn, Ritchie took 51321 out of service for repairs to the roof so subsequent services had operated with 51131 coupled to the single-unit 'Bubble Car' 55005. The versatility of the Electro-Pneumatic control systems allows this sort of unconventional arrangement. However, I learnt that, subsequently, one of the two engines on 55005 had failed and there had been some difficulty in isolating the failed engine.
Like many cars, a Diesel Multiple unit requires a gearbox to match the limited range of engine speed over which an internal combustion engine can provide reasonable torque with the wide range of vehicle speed required. Many of the British Railways designs (and all the examples at Shackerstone) use an Electro-Pneumatically controlled (E.P.) epicyclic gearbox. Unlike cars, a Diesel Multiple unit travels as far travelling backwards as forwards and needs a range of gears in both directions. So, instead of making 'reverse' an 'add-on' to a gearbox, it is made a separate function, called the Final Drive, mounted on the driven axle and also E.P. controlled. The engine always rotates in the same direction and the drive, having passed through the gearbox, turns a Cardan Shaft, again always the same direction. The reversal occurs within the Final Drive unit by operating a selection 'Dog' splined into the input shaft from the gearbox but free to slide so as to engage one of two bevel gears which, via a spur gear, determine the direction in which the axle revolves. The sliding 'Dog' is actuated by a Selector Fork controlled by two E.P. valves.

To take an engine out of service the Starter Motor is electrically isolated by operating an underframe-mounted switch adjacent to the engine.


55005 Number 2 Engine: The Engine Isolator Switch is the orange-painted square box underneath the wooden footstep.

A failed engine must also be mechanically isolated from the wheels by latching the 'Dog' Selector Fork in a central, 'neutral' position. This is achieved by pulling-out and turning an Isolating Plunger mounted on top of the final drive. A spring then pushes the Isolating Plunger so as to engage in a groove when the Selector Fork and 'Dog' are in the 'neutral' position, confirmed by rotating the Cardan Shaft by hand. The Isolating Plunger is in an inaccessible position almost on the centre line of the vehicle so the Guard's Compartment is equipped with a special long-handled fork (always called the 'Toasting Fork') to assist.

DMU Final Drive: The small rectangular casting near the centre of the picture is the Isolating Plunger. Pulling and turning the bar into the horizontal position isolates the drive.

My post Diesel Multiple Units has links to training material produced by British Railways: black and white sound films and training notes.
Ritchie completed the fourth round trip with the 2-coach train running on three engines. With an engine 'out', performance is affected but Ritchie found the operation unexpectedly sluggish. By the time he returned to Shackerstone, Tracey and I had completed disposal of the steam locomotive so Ritchie invited me to drive the last train. However, as soon as I started away, I agreed with Ritchie that the unit seemed very 'unhappy'. Having gone barely 300 yards, Ritchie decided that we should cancel the run. We never like to disappoint passengers but, with the risk of failing 'in the section', I readily agreed, 'changed ends' and slowly drove back to the platform to disembark our passengers. Having 'changed ends' again, I then very slowly drove to the DMU siding and Ritchie (who, of course, owns the diesel multiple units at Shackerstone) immediately set-to dismantling the Final Drive and, before long, discovered that the 'Dog' (described above) had shattered, suggesting that permanent isolation might not have been achieved. He removed the broken pieces and decided to remove the Cardan shaft so that the midweek railcar service could continue whilst he arranged the necessary repairs.

What happened next?

I was rostered as driver on 'Cumbria' a week later, Sunday 27th August 2017) and, again, there was a 'Gold' footplate experience course followed by five passenger trips to Shenton and back. Temporary repairs had been made to the spring (tack welding and clamping) and no problems were encountered. I was delighted to be 'paired' with Ritchie, now a Passed Cleaner on his 'maiden' solo firing turn. We both had a very enjoyable day.

I was re-united with the DMU for a 'Midweeek' turn on Wednesday 13th September 2017 with Grant as Guard. The initial problem we faced was that the 2-coach DMU (51131 with both engine serviceable coupled to 55005 with one engine in use) had been 'boxed-in' by a class '04' shunter and a freight wagon. There was no passed '04' driver on site but I was happy to use the DMU to push the vehicles down the 'North End', out of our way. I brought the DMU onto the wagon and coupled on, using the wagon's 'Instanter' coupling in the long position (there's more about the 'Instanter' here). But then we had to release the brakes on the '04'. Brakes on diesel shunters are normally 'co-acting' - they can either be applied by a proportional brake valve when an air receiver is 'charged' (from an engine-driven compressor) or, alternately, manually, (usually from a handbrake wheel in the cab). Neither Grant nor I could budge the handbrake wheel on the '04'. It was clear that the brake had been applied using air and the handbrake wheel then turned to 'take up the slack', resulting in a brake application very difficult to release by hand. It took Grant and I some minutes (using a fishplate as a lever) to release the brake in small steps. Then, with Grant keeping a lookout from the cab of the '04', I propelled the unwanted vehicles out of the way. We re-applied the '04' brake (by hand!), I uncoupled and shunted back to the station with waiting passengers curious about our antics. I think we were seven minutes late with the first departure but, even with one engine out of use, had no difficulty keeping to time for the rest of the day. Grant and I agreed that we'd had a very pleasant day.

Related posts on this website

The 'Austerity' 0-6-0ST locomotive.
To see all my posts about Diesel Multiple Units, select Label 'DMU' or click here.
To see all my posts about the Battlefield Line, select Label 'Battlefield Line' or click here.

My photograph albums

Where necessary, clicking on an image above will display an 'uncropped' view or, alternately, pictures from may be selected, viewed or downloaded, in various sizes, from the albums listed:-

'Cumbria'.
Royal Pioneer (Up close & personal) [Pictures of another 'Austerity' tank].
All my Battlefield Line albums.

Tuesday, 29 August 2017

The Role of the Shunter

The Mutual Improvement Classes of the old steam railways still continue for today's preservation volunteers. This is one of a series of posts taken from notes of talks given by Jan. To find them all, select label 'MIC' or click here. There's a periodically-updated list of these posts here.

The following notes for shunters are aimed at persons working on preserved standard gauge railways in the United Kingdom. The Shunter (where I mean the person on the ground involved in marshalling a train and coupling and uncoupling vehicles - not the locomotive engaged in the marshalling), is engaged one of the more dangerous tasks carried out on a railway. This role may be carried out by dedicated shunters, by Guards or Footplate crew. Anybody carrying out this work must be suitably trained and assessed as competent and be using the specified Personal Protective Equipment (PPE).

The shunter must not go between two vehicles unless they are both stationary and there is a 'Clear Understanding' with the driver of any locomotive. Muttering "Going between" and disappearing between vehicles is not adequate - there must be an explicit acknowledgment from the driver that it is safe to go between vehicles.

Please remember "Jan's Three Rules" for working on a railway:-
1. Do it Safely.
2. Do it Safely.
3. (Can you guess?) Do it Safely.
Just moving around in a railway yard presents a challenge. The ground is rarely level and can rapidly change texture (ballast, wood, earth, paving, tarmac). There are numerous obstructions to catch out the unwary. In addition to various posts, fences and misplaced debris, there may be hand levers to operate points. If there's a signal box or ground frame in the vicinity, in addition to various types of signal there is likely to be point rodding, cranks/compensators, signal wires and signal pulleys.

This introductory part deals with the two simplest types of coupling used on freight wagons mentioning the hand brakes typically provided. In the steam era, the 3-link and 'Instanter' couplings were the most common types used on freight trains. Individual vehicles usually had hand-operated brakes, used as both a 'parking' brake and, partially applied, as a means of retarding the vehicle when descending an incline. On the move, the locomotive brake and the handbrake applied by the guard in the Brake Van at the rear of the train were the only means of controlling the train. It became mandatory on trains carrying passengers to have an 'automatic' brake operable throughout the train. Gradually increasing numbers of freight trains were fitted with 'automatic' brakes on all or at least a group of vehicles next to the engine (called a 'fitted head'), allowing higher running speeds.

The 3-link Coupling

The simplest coupling in use on standard-gauge railway vehicles in the United Kingdom comprises a strong Drawhook from which are suspended three links. Whilst easy and quick to attach or detach this type of coupling to an adjacent vehicle, there will always be 'slack' between the vehicles, and the driver must be aware of this. Because both adjacent vehicles have the same design drawhook and similar coupling links, the shunter can normally choose whether to put the left coupling links on the right drawhook or the right coupling links on the left drawhook. Should a link fail on a journey, it was possible to complete that journey by using the 'good' coupling links. However, most freight guards would keep a 'spare' 3-link coupling to hand so that a failed coupling could be replaced. Particularly in freight yards, spare 3-link couplings were often to be found lying around.


A spare 3-link coupling was often to be found lying around.

The hole in the drawhook which accepts the associated link is accessed via a 'keyway' narrower than the diameter of the steel bar from which the links are made. The prevents a coupling from becoming accidentally detached from its parent drawhook but, without special provision, this would prevent a failed coupling from being easily replaced. The 'special provision' is called the 'Kedge' - a flattening part way along a long side of the end link. This flattening makes the kedge thin enough to pass through the keyway in the drawhook, allowing the coupling to be suspended from the parent drawhook.


3-link coupling, showing the 'kedge' in the long side of the end link which allows the coupling to be suspended from the parent drawhook.

The slack in the couplings on this type of train (referred to as 'loose-coupled') can be used to advantage by a driver in starting a heavy train. If the locomotive has eased back on the train, only part of the train weight has to be moved initially with additional load taken by the locomotive as couplings tighten towards the rear of the train. However, on an undulating route, additional skill is needed as the wagons 'bunch up' on down grades and 'pull out' on rising grades. Co-operation with the Guard, in operating the handbrake in the Guard's Van, can minimise the effects.


3-link or 'Instanter' Coupling: End view (from a Railtrack document).


Instanter Coupling: Side view. The 3-link coupling is similar, but with a plain, oval centre link (from a Railtrack document).

The 'Instanter' Coupling

The 'Instanter' is similar to the 3-link, except that the middle link has a complex shape with two 'ears' allowing it to be placed in either of two positions, corresponding to 'long' or 'short'. In the 'long' position, the coupling has the ease-of-use of the 3-link. In the 'short' position, some of the 'slack' is taken out of the coupling and the motion of the train may be better (particularly for the Guard at the end of the train!).

Diagram of 'Instanter' Couplings in the 'Long' and 'Short' positions (From the L.M.S. General Appendix to the Working Time Tables 1937).

The Shunting Pole

The Shunting Pole was an invaluable aid to Shunters. A stout, round, wooden staff, usually made from ash was provided with a specially-shaped metal end, curled like the tail of a pig. Armed with this tool, a skilled operator could rapidly couple or uncouple both 3-link and 'Instanter' couplings. 'Instanter' couplings could also be turned from long to short or short to long positions. This was done with the shunter standing alongside the wagons so it was both safer and faster. Some strength and some practice is required to become proficient. It's also important to check the pole regularly for damage. In former times, employees were sometimes tempted to make use of shunting poles in unauthorised ways. The frequent need to apply or release wagon handbrakes could tempt the shunter to use the shunting pole as a lever (rather than the properly-designed brake stick) or, worse, to avoid chasing a wagon down a siding shunters might wedge the shunting pole into the underframe of a moving wagon and ride on the protruding pole. Serious injury or death could follow so no modern volunteer should copy these risky practices.

Jan at the Museum of Science and Industry, Manchester (with Shunting Pole and looking rather fierce).

The shunting pole, showing the 'business end'.

Coupling either a 3-link or 'Instanter' coupling to the drawhook of the adjacent wagon using the shunting pole. The shunting pole is held under the buffers, engaged with the bottom link and swung up and across. The shunting pole is released by twisting.

Using the shunting pole to uncouple a 'long' 'Instanter' or 3-link coupling from the drawhook of the adjacent wagon. The metal part of the Shunting Pole is placed under the link and the pole swung upwards. This is sometimes done with the pole over the buffer shank.

'Instanter' Coupling after turning to 'short' position. The centre link is turned, by engaging the pig's tail with one of the 'ears' on the centre link and pulling upwards.

'Instanter' coupling: Using the shunting pole to place an 'Instanter' coupling in the 'long' position. Beforehand, there must be sufficient slack in the coupling to allow the centre link to be turned, by engaging the pig's tail with one of the 'ears' on the centre link and pulling upwards.

Wagon Brakes

Freight wagons are provided with hand-operated brakes, usually capable of being applied from either side using a long, pivoted brake lever but short levers or handwheels are also used. Even with a long brake lever, significant downward force may be needed to apply the brake effectively. The Brake Stick (described below) can assist in safely applying and releasing handbrakes. There's a little more about brakes on railway vehicles here and pictures of a range of preserved wagons in the album Freight Rolling Stock.

A typical 4-wheel Van (or Covered Wagon) provided with a handbrake lever on both sides. Operating either lever downwards applies the brakes but both levers must be raised to release the brakes.

Detail of handbrake lever, showing the pin and chain used to 'pin down' the brakes when parked or descending an incline.

Detail of tranverse brake shaft, showing how the handbrake lever on either side applies a strong force to a cam to turn the transverse shaft and apply the brakes.

Detail of brake rigging, showing cast iron brake blocks.
The Brake Stick

The Brake Stick is wooden, about 3 feet long. Half the length is rectangular, around 2.5 inches by 2 inches in section. The remainder is rounded and tapered to about 1.25 inches diameter at the end. The rectangular section is placed over the Brake Lever and wedged under the underframe or the spring. Pressing down on the rounded section provides additional leverage and the pin is inserted in a pair of holes to retain the brake force. The brake stick may be needed to safely remove the pin when it is necessary to release the brake. As with the Shunting Pole, it's important to check the Brake Stick regularly for damage.

More on this topic at The Role of the Shunter (2).

Related posts on this website

MIC - Brakes.

Related photograph albums

Pictures from may be selected, viewed or downloaded, in various sizes, from the album listed:-

Freight Rolling Stock.

Saturday, 26 August 2017

Battlefield Line Fish and Chip Evening Special

On Saturday 12th August 2017, I was back at the Battlefield Line, this time on 'Cumbria' which had recently had a washout and repairs to the fireman's side injector.

There was no footplate experience course booked so it was a leisurely start for me signing on at 08:30, although Adrian L. (who was acting as fireman in the morning) had arrived a couple of hours earlier to get the engine lit-up. In addition to the normal service of five return trips between Shackerstone and Shenton, in the evening there was a 'Fish and Chip Special' which I'd also agreed to 'cover'.

I 'oiled round' and examined 'Cumbria' and we were 'off shed' in plenty of time to attach to our 4-coach train waiting in platform 2 at Shackerstone. After the first two round trips to Shenton, Adrian was replaced as fireman by Steve A. But Adrian had not finished - on the contrary, donning his 'catering' hat, he and Gina spent the afternoon sorting out supplies for the evening 'Fish and Chip Special' whist Steve and I completed the normal 'diagram' with another three journeys to Shenton and back.

Arriving back at Shackerstone after our fifth trip, we were routed into platform 1 where the main station facilities (tea room, museum and toilets) are located. I deliberated 'stopped short', leaving room at the north end of the platform for our train to be 're-inforced' with an additional coach for the fully-booked evening special. Steve uncoupled 'Cumbria' and we went to the north end sidings to 'coal-up'. The bucket loading shovel (driven by Adrian wearing another 'hat') soon topped-up our bunker. We then shunted south through platform 2 to replenish the saddle tank from the water crane at the at the south end of platform 2. In defiance of normal conventions, turning the wheel which controls the water valve clockwise opens the valve, rather than closing it. Many years ago, as a reminder, somebody wrote on the wheel in white paint 'Open' and 'Closed' with arrows but this is now faded. If I'm on the wheel, I always have to do a 'double-take' when I hear the cry "That'll do" from my mate on top of the tank to avoid both of us getting a soaking.


Water Crane at Shackerstone. The wheel which controls the water valve is on the right.

Coaled and watered, we coupled onto the south end of the four coaches we'd left in platform 1 and I was able to watch the shunting being performed. The maroon-painted coach to be added to our train was behind the self-powered Tamping Machine in siding 2 at the north end so Adrian (now with driver's 'hat') 'fired-up' the tamper and moved into platform 2, pulling the extra coach. The Class 04 diesel shunter moved onto the north end of our train and attached the nearest coach (a 'Mark 1' in Western Region 'chocolate and cream' livery), first drawing it back to the north end, then propelling it onto the maroon-coach behind the tamper in platform 2. The '04' then pulled both coaches back to the north end, before finally propelling them towards the coaches waiting in platform 1.


Adrian leaning out from the '04', checking for handsignals from the shunter, as he propels two coaches onto the three already in platform 1.

British passenger coaches built after the 1948 Nationalisation of railways were fitted with 'Buckeye' couplings, retaining a conventional drawhook which is used to attach the locomotive using a screw coupling (only one British steam class was originally fitted with 'Buckeye' couplings - Gresley's 'A4'). On coaches, the 'Buckeye' is hinged and has to be lifted to the horizontal position to allow coupling to a similarly-fitted vehicle. The substantial hook has a hinging 'knuckle'. To couple, two vehicles are brought together with one of the knuckles in the 'open' position and the adjustable buffers set to the 'Short' position.


BR Coaches being shunted together. Buffers in 'Short' position for use with Buckeye coupling. Note 'saddle' stowed on bracket adjacent to buffer.

As the two couplings contact, the open knuckle is forced closed and a mechanical latch drops, locking the knuckle closed. In addition to the shunter confirming visually that 'the pin' has dropped, a 'pull test' is conducted where the locomotive tries to separate the vehicles. Unfortunately, to connect the brake hoses and, when required, the steam heating hoses, the shunter still has to clamber underneath the vehicles. The electrical jumpers to allow the guard to control the carriage lighting also require connection.

To uncouple, pulling a chain on either coupling unlatches that knuckle, allowing the vehicles to be drawn apart. The shunter controls the coupling and uncoupling by hand signals given to the driver of the locomotive performing the shunt from a position alongside the vehicles.

It was a warm summer evening and, by this time, a good-natured crowd of expectant diners had assembled on the platform, waiting to be seated on the train. Steve and I readied 'Cumbria' for a leisurely trip down the line.


'Cumbria' ready to depart with the evening train.

A little late, we received the 'Right Away' from the Guard, collected the Single Line Staff from the Signalman at Shackerstone and trundled down the line. We were not expecting to stop at Market Bosworth but, as we approached the platform, one of our Volunteers was on the platform so we decided to make a stop. He didn't board the train, but had apparently ordered a portion of fish and chips which was safely delivered to him, after which the Guard gave the 'Tip' and we set off again.

I'd been told to stop on Shenton Bank, just before our last station, where there are views across the Leicestershire countryside on both sides of the train. It was a perfect summer evening as the sun sank lower in the sky and the engine simmered quietly whilst our diners enjoyed their food. I felt much happier than the picture below perhaps suggests.


Battlefield Line Fish and Chip Evening Special: We paused on Shenton Bank with views across the Leicestershire countryside.

Food had also been ordered for the loco crew, so Steve 'dropped down' and walked back to collect our fish and chips which we enjoyed whilst waiting. After about fifteen minutes, the Guard gave us the 'Right Away' and we continued to Shenton station. There was then a bout of activity as we uncoupled, ran round and coupled onto the train for the journey back to Shackerstone. Many of our passengers were on the platform, enjoying the warm evening and taking numerous photographs. Once everyone was back on board, we set off on a fairly gentle trip back to Shackerstone.

We arrived back in platform 1, stopping so that all the passenger coaches were in the platform. With 'five on' that meant that the rear of the train didn't leave sufficient clearance for us to use the ground frame giving access to the loco shed. So we ran round, attached to our train and, with the Guard giving hand signals from the north end, propelled the train northwards a short distance to give sufficient room for us to get 'onto shed'. By this time, it was fairly dark. It only remained to put the locomotive in the shed and carry out the normal disposal routine after what had been a very enjoyable day.

Related posts on this website

To see all my posts about the Battlefield Line, select Label 'Battlefield Line' or click here.

My photograph albums

Where necessary, clicking on an image above will display an 'uncropped' view or, alternately, pictures from may be selected, viewed or downloaded, in various sizes, from the albums listed:-

Battlefield Line Fish and Chip Evening Special.
'Cumbria'.
All my Battlefield Line albums.

The Role of the Shunter (2)

The Mutual Improvement Classes of the old steam railways still continue for today's preservation volunteers. This is one of a series of posts based on notes of talks given by Jan or with technical content which may be of use to today's volunteers. To find them all, select label 'MIC' or click here. There is also a list of these posts (not always up-to-date) here.

There is an earlier post which introduces the role of the shunter here and the comments on safety in that post equally apply here. The introductory post discussed simpler coupling systems widely used on standard-gauge freight rolling stock. This part discusses couplings used on passenger rolling stock.


Screw Couplings

Whilst the 'loose coupling' provided by three-link couplings was acceptable on freight trains, passenger vehicles needed to be more tightly coupled to give a reasonable level of comfort. For many years, passenger coaches in Britain used 'screw-couplings'.


Vehicle with Screw Coupling hanging: End view (from a Railtrack document).

Vehicle with Screw Coupling stowed on hook: Side view (from a Railtrack document).

Once the coupling is on the drawhook of the adjacent vehicle, it is tightened up by rotating a threaded screw which has one end with a left-hand thread, the other end with a right-hand thread, using a built-in tommy bar incorporating a counterweight. This draws the two D-links together tightening the coupling so that, on straight track, the buffers will be equally compressed but, on curves, the buffers on the inside of the curve will be further compressed and the buffers on the outside of the curve will slacken slightly. At all times, the buffers should remain under some compression, so that the train cannot bang in and out. The comfort of the passengers depends upon the screw adjustment being correctly carried out. The complete process of coupling vehicles is outlined in the article On the Footplate (Part 2).

The picture below shows restored L.M.S. coach 7828 attached to 'Austerity' Tank 'Lord Phil' at Peak Rail.


Restored coach 7828 at Rowsley: View showing coach drawhook, with unused coach 'D' link hanging down. The rest of the stowed coach screw coupling is obscured by the steam heating hose. The coach has been attached to 'Austerity' Tank 'Lord Phil' using the locomotive coupling.

Although screw couplings were effective, the results of accidents, particularly at higher speeds, showed the limitations of screw couplings. Part of the train could twist or even break free, increasing the chance of serious injuries.

Automatic Couplings

In other countries, various forms of 'Automatic' coupling had been developed to provide extra strength and simplify the business of coupling and uncoupling vehicles. In America, Eli Janney patented his design in 1873 and, in 1893, legislation made this the standard coupling in America. In 1915, John Willison of Derby patented his own automatic coupling which, with modifications, was adopted in 1935 by the Soviet Union as their standard coupler.


Ukraine Steam: Locomotive Em 735-72 at speed in the rain, showing Russian pattern autocoupler between tender & coach.

A variation of the Janney coupling with side release called the 'Buckeye' was adopted by the L.N.E.R. and the Southern in the 1930s, retaining side buffers. Since not all vehicles were fitted with 'Buckeye' couplings (and only one class of British steam locomotives was fitted - Gresley's 'A4'), the 'Buckeye' fitted to coaches was a 'drophead' pattern where the automatic coupler head could be lowered to reveal a conventional drawhook for use with a screw coupling. After the 1948 Nationalisation of British railways, a range of standard passenger coaches were built, similarly fitted with a conventional drawhook, 'drophead' 'Buckeye' coupler and adjustable side buffers (each with two positions - 'long' for use with a conventional screw coupling and 'short' when using the 'Buckeye').


Buckeye Coupling as fitted to B.R. Mk 1 and Mk 2 gangwayed vehicles: End view (from a Railtrack document).


Buckeye Coupling as fitted to B.R. Mk 1 and Mk 2 gangwayed vehicles: Top view (from a Railtrack document).


Buckeye Coupling as fitted to B.R. Mk 1 and Mk 2 gangwayed vehicles: Side view (from a Railtrack document).

The 'Buckeye' has a substantial hinging 'knuckle'. To couple, two vehicles are brought together with one of the knuckles in the 'open' position and the adjustable buffers set to the 'Short' position, as shown in the picture below.


BR Coaches being shunted together. Buffers in 'Short' position for use with Buckeye coupling. Unused 'saddles' are stowed on a bracket adjacent to each buffer.

As the two couplings contact, the open knuckle is forced closed and a mechanical latch drops, locking the knuckle closed. In addition to the shunter confirming visually that the 'pin' has dropped, a 'pull test' is conducted where the locomotive tries to separate the vehicles.

To uncouple, pulling a chain on either coupling head unlatches that knuckle, allowing the knuckle to swing open and the vehicles to be drawn apart.

When coupling or uncoupling the shunter stands alongside the vehicles and controls the movement by hand signals given to the driver of the locomotive performing the shunt. Unfortunately, to connect or disconnect the brake hoses and, when required, the steam heating hoses, the shunter still has to clamber underneath the vehicles, after coming to a clear understanding with the driver that it is safe to do so. The electrical jumpers between vehicles which allow the guard to control the carriage lighting also require connection/disdconnection.

Related posts on this website

The Role of the Shunter (Part 1).
On the Footplate (Part 2).
MIC - Brakes.
Mutual Improvement Classes (2) (List of MIC posts).

My photograph albums

Where necessary, clicking on an image above will display an 'uncropped' view or, alternately, pictures from may be selected, viewed or downloaded, in various sizes, from the albums listed:-

Passenger Rolling Stock.

['Related posts' amended 13-Apr-2020]

Monday, 14 August 2017

Brewood Garden Party 2017

In 2013, the Brewood Village Garden Party annual event was restarted, re-located to the garden at Brewood Hall. Deemed a success, it has been held in 2014, 2015, 2016 and, as described below, on Saturday, 8th July 2017.

Preparations

Each year significant effort by volunteers, which starts months earlier with a series of planning meetings, is needed to ensure that people enjoy their visit to the event. In 2017, erection of the tents commenced two days before the Garden Party.


Brewood Garden Party 2017: The Refreshment Tent takes shape.

Preparations continued on the evening before the event. These included the erection of the large marquee which would serve as the 'Craft Tent'.


Brewood Garden Party 2017: Putting up the large Marquee.

The Event

Once again, the weather was kind on the day of the event and visitors started to arrive at the entrance gate a little before noon.


Brewood Garden Party 2017: The Admission table.

The Refreshment Tent was soon busy and remained busy. The combination of covered and open air tables, with the Pimm's Tent nearby, catered for all tastes.


Brewood Garden Party 2017: The Refreshment Tent is always popular.

For the first time, food was also available from a 'Pizza Van' which used a traditional wood-fired oven. This was a very successful innovation and many people commented favourably on the quality of the pizza.


Brewood Garden Party 2017: A successful innovation in 2017 was the 'Pizza Van', using a traditional wood-fired oven.

Traditional entertainments included wet sponge throwing at a human target and the ever-popular coconut shy. There was also a catapult range and a supervised Under-5 Play Zone.


Brewood Garden Party 2017: Traditional entertainments included wet sponge throwing at a human target.


Brewood Garden Party 2017: The coconut shy is popular with all ages.

The Craft Tent featured the work of a number of local artists and crafters whilst the well-stocked Plants and Produce stall organised by the parish church provided shopping opportunities.


Brewood Garden Party 2017: The Craft Tent featured the work of a number of local artists and crafters.


Brewood Garden Party 2017: The well-stocked Plants and Produce stall organised by the Parish Church provided shopping opportunities.

For the first time, Black Country Live Steamers displayed two marvellous live-steam scale models of traction engines, which created a lot of interest. You can read more about Black Country Live Steamers on their website here.


Brewood Garden Party 2017: Live-steam scale model of a Fowler traction engine, with a young admirer.


Brewood Garden Party 2017: Live-steam scale model of an Allchin traction engine.

An unexpected "visitor" was the preserved World War II Lancaster Bomber from the Battle of Britain Memorial Squadron, which overflew our event. You can read all about this historic arcraft on the website here.


The preserved World War II Lancaster Bomber overflew the Garden Party.

As in previous years, live music was provided by the talented young musicians from the Cannock Wind Band and the Cannock Big Band who are based at the Cannock Performing Arts Centre.


Brewood Garden Party 2017: Live music was provided by the Cannock Wind Band and the Cannock Big Band.

Later, a contingent from the Staffordshire Corps of Drums gave a demonstration. Captain Keates provided a virtuoso drum performance, accompanied by what I call a marching glockenspiel (but which I learn is also known as a Bell Lyre or a Lyra Glockenspiel - see Wikipedia here).


Brewood Garden Party 2017: A contingent from the Staffordshire Corps of Drums gave a performance.

As in previous years, a series of Sack Races and Egg and Spoon Races for children were held and, once again, proved popular. All the entrants were enthusiastically supported by the visitors. Each of the competitors was awarded a selection of confectionery,


Brewood Garden Party 2017: The children entering the Sack Races and Egg and Spoon Races were enthusiastically supported by the visitors.

Everybody agreed that, once again, we'd had a very successful event (and the sun shone). This year, the organising committee made four awards - a special award to Compton Hospice and awards to Brewood Scouts, the Brewood Parish Church and the Jan Ford Foundation.

Reports on earlier garden parties at Brewood Hall

Brewood Vintage Garden Party 2013.
Brewood Vintage Garden Party 2014.
Brewood Garden Party 2015.
Brewood Garden Party 2016.

Related posts

More information on the charitable work supported by the Jan Ford Foundation in Myanmar (formerly Burma) can be found by following the links below:-

Education Support
Medical Support.

Pictures of the event

Where necessary, clicking on an image above will display an 'uncropped' view or, alternately, pictures from may be selected, viewed or downloaded, in various sizes, from the album below:-

Brewood Garden Party 2017.

Sunday, 13 August 2017

'Lionsmeet' 2017

Each year, The Old Locomotive Committee (OLCO) has an event for live steam models of the 'Lion' locomotive.

In 2017, the event, called 'Lionsmeet', was held on Saturday, 22nd July at the Worden Park track of the Leyland Society of Model Engineers.

I travelled to Preston on an Edinburgh train which I joined at Wolverhampton. The journey, operated by Virgin using two 5-car 'Voyager' diesel-electric units, was swift and on-time (although it never ceases to irritate me that so many long-distance journeys 'under the wires' remain operated by diesel traction). I first spent a while exploring Preston city centre on foot - still strangely quiet as early morning shoppers started to fill the streets. I walked as far as the Harris Museum and Art Gallery, with its all-embracing, gilded, carved inscription
'TO LITERATURE ARTS AND SCIENCE'.


The famous Harris Museum and Art Gallery in Preston.

Then, I retraced my route back to the station and took a taxi south of the city centre to Leyland. The taxi dropped me at the Park Gate and I had a walk of a few hundred yards to reach the Club House and Steaming Bays but, fortunately, my 'railway homing instinct' did not fail me.

I was welcomed by Andrew Neish, who is currently the 'Lionsmeet' organiser for OLCO and the other early arrivals. Members of the host club were also there in force and I was soon drinking a welcome cup of tea in the clubhouse.

The club has established a 1617 foot continuous raised track for 3½ and 5 inch gauge models (arranged as a 'folded dumb-bell') and a ground level 7.25 inch track extending to one kilometre (laid out as a 'slightly-bent dumb-bell'). There are covered steaming bays, turntables and station facilities for each gauge.


Click for larger image
Worden Park, Leyland: Plan of model railway facilities. (Map: Leyland Society of Model Engineers).



'Lionsmeet 2017' at Leyland SME: View looking west from the Stock Shed towards the 3½in and 5in steaming bays with the 7.25in steaming bays on the right.

My eye was drawn to an impressive 7.25in model of 60809 'The Snapper', brewing-up in the steaming bays. I learned that this would be giving public rides during the day on the ground-level track. Soon, a 7.25in 'B1' was also being steamed.


'Lionsmeet 2017': 7.25" gauge locomotive 60809 'The Snapper' being prepared for service on the ground level track.

Although we've had 7.25in gauge 'Lion' models in steam at some previous 'Lionsmeets', none attended in 2017 and so the OLCO activities were confined to to raised track. Club members first extracted their battery electric locomotive 'Worden Ranger' from its 'garage' (where battery charging takes place) and marshalled a train of two passenger car and a 'tool car'.


'Lionsmeet 2017' at Leyland SME: The Battery Electric locomotive 'Worden Ranger' ready to perform a line inspection of the elevated track, with two passenger cars and a tool car.

After the line inspection was completed, I was invited to make a couple of circuits with 'Worden Ranger'. Driving was straightforward, with just a direction selector and a single power controller handle. The handbrake on the leading passenger car was used for train braking although there was also a 'parking brake' on the locomotive. I found the locomotive responsive and powerful. A (rather feeble) two-tone horn was provided. For part of the morning, the host club gave public rides with 'Worden Ranger' and its train but the raised track was generally reserved for OLCO members.

Models were steamed by David and Andrew Neish, Jon Swindlehurst and Adrian Banks. David and Andrew, as usual, alternated in driving David's model.


'Lionsmeet 2017' at Leyland SME: David Neish and Andrew Neish on the elevated track.


'Lionsmeet 2017' at Leyland SME: Jon Swindlehurst about to depart with his 'Lion' with John Oliver as passenger.


'Lionsmeet 2017' at Leyland SME: Adrian Banks pauses adjacent to the steaming bays whilst he 'fettles his fire', allowing his passenger, John Brandrick, to chat to John Hawley.

In addition, a number of part-built 'Lions' were displayed in the Club House. David Forrest's beautifully-built model (on the right in the picture below) attracted many favourable comments. He had produced a number of trial '3D-Printed' plastic components during the development of his design.


'Lionsmeet 2017' at Leyland SME: Discussions in the Club House: John Oliver, David Forrest, John Hawley.

The host club laid on a splendid buffet lunch and free-running of the models in steam continued into the afternoon. OLCO Chairman John Brandrick made a short address of thanks to Leyland S.M.E. for their hospitality, following one minute's silence to commemorate the death of Justin Garside-Taylor from the Museum of Liverpool.


'Lionsmeet 2017' at Leyland SME: During the afternoon John Brandrick, Chairman of OLCO, made a short address of thanks to Leyland S.M.E. for their hospitality.

Some of the OLCO visitors made their way across to the 7.25 inch ground level track at the adjacent Worden Parkway Station, where rides were given to the public throughout the day. In the morning, 'The Snapper' was the motive power but, by the time John Hawley and I went across, B1 'Reedbuck' had taken over.


'Lionsmeet 2017' at Leyland SME: Worden Parkway Station on the 7.25 inch ground level track showing 'B1' 61031.

John Hawley kindly ran me to Preston Station for my return train, so I missed the informal 'OLCO Dinner' held later in Euxton.

Related posts on other websites

Leyland Society of Model Engineers.

Related posts on this website

All my posts regarding the Old Locomotive Committee can be found here, with links to my pictures.

My pictures

Where necessary, clicking on an image above will display an 'uncropped' view or, alternately, pictures from may be selected, viewed or downloaded, in various sizes, from the albums listed:-

Lionsmeet 2017.
Preston.
All my 'OLCO' albums.