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QUOTE: Originally posted by willy6 Before the invention of "air brakes" the boxcar hand brake wheel was mounted on top of the boxcar and the wheel was horizontal so the brakeman could turn it to stop the car/train. Then after air brakes were introduced, the hand wheel went to the upper end of the boxcar mounted vertically and required a climb on a ladder to operate, then the hand brake wheel was move to the bottm of the car so no climbing was involved.I never understood why after the use of air brakes was the hand wheel mounted on top of the end of the car, why wasn't it just mounted at the bottom to begin with?
Dave H. Painted side goes up. My website : wnbranch.com
QUOTE: There is no difference on which way a car is "pointing", B end leading or B end trailing, and there is no attention paid to which end is the B end.
I know this is from a very long time ago, but due to the lack of factual information in the responses, I thought it would be helpful to add some clarification.
Handbrakes were originally used because that was the only way to brake the car, and more importantly make sure it doesn't move when it's not attached to a train. While they were used to brake and slow a moving train, that was not necessary once air brakes were invented.
They were horizontal (that is, the brake wheel was above the roof of the car in a horizontal position) because that was mechanically the easiest way to design it. The wheel simply turned the shaft, which was attached to a chain that wound around the bottom of the shaft to set the brakes (aka "stemwinder"). This arrangement was necessary before air brakes (rather than something you'd set from the ground) since the brakemen had to be able to manually set the brakes while the cares were in motion. The most convenient and safest place for that was from the roof.
After the advent of air brakes, the handbrakes weren't generally needed for slowing the train, although it could and was still done. But airbrakes only work when there is air in the reservoir. The brakes are set by releasing air from the brake valve, which is pressurized through the train line from the locomotive. This also refills the reservoir and emergency reservoir. When a drop in pressure is detected at the brake vavle, then the valve releases air from the reservoir to the brake cylinder which sets the brake.
Naturally, when a car is set off by itself, it's no longer attached to a train. Without the train line pressurization, the reservoirs slowly leak and the brakes would eventually release. The handbrake mechanically sets the brake.
The handbrake itself was gradually moved from the horizontal hand brake, to the vertical handbrake on the car end. This was due to three reasons. The first was for safety. Horizontal handbrakes used a ratched and pawl mechanism. When tightening the handbrake, the pawl would catch the teeth in a gear, preventing it from spinning back to release. To release the brakes you just opened the pawl, and the wheel would spin, usually very quickly. If the pawl didn't catch properly, the same thing would happen. Brakemen frequently used a large rod (similar to an axe or shovel handle) that they would stick into the brakewheel for leverage in turning the wheel. If the pawl failed to catch, the stick would often break an arm, ribs, or even through the brakeman off the moving train.
Turning the brakewheel also required a lot of strength (thus the use of the stick as a lever). To address both safety concerns and the difficulty of setting the brake, geared handbreak systems were developed. Early designs used the same horizontal handbrake, but their designs were open to the elements. They also didn't resolve accidents due to clearance issues with a carman on top of the car. Vertical handbrakes with the mechanism much more protected from the elements and situated with the handbrake itself solved these issues.
Another factor that likely came into play is a major advantage of the vertical handbrake. Clearance. The horizontal handbrake protruded above the top of the car by about 8"-10". While that may not seem like a lot, when you're talking about cubic feet inside a car, a few inches in any direction makes a big difference. The 1923 ARA Proposed-Standard box car (basically the PRR X-29) had an inside height 8'7-3/8". The 1932 ARA Standard had an inside height of 9'4", 1937 AAR Standard 10'0", the Modified 1937 AAR Standard, and 1947 AAR Standard had a 10'6" inside height. All of these are in similar increments to allow for larger cars. In 1935 the AAR required that all cars built new or rebuilt in 1937 or later had to use vertical handbrakes. The 1937 AAR Standard box car was the first standard car to not include specifications for the horizontal handbrake, and probably gained a good portion of its increase in height due to that exclusion.
Randy
Bikerdad What about passenger cars? Did they have facing practices or requirements, aside form the obvious like the California Zephyr's last car?
What about passenger cars? Did they have facing practices or requirements, aside form the obvious like the California Zephyr's last car?
Depends on the railway, and in some cases possibly even the specific train.
For example - simplest case: an all-coach day train.
Older cars had vestibules (entrance) at both ends, so direction didn't matter. (Note: the seats can be reversed)
Later lightweight cars often had the vestibule at one end only, and depending on the railroad, they might set up the train with all the cars facing the same way so the vestibules are consistently to the front (or rear), or they might face every other car the opposite way to set up the vestibules in pairs.
Trains with sleeping cars usually had them all arranged the same way so that the rooms and hallways were consistently to the same side(s).
Chris van der Heide
My Algoma Central Railway Modeling Blog
Having worked on passenger cars with vestibules at one end only, I can attest that boarding and some other activities are made easier by having all cars face the same way because that gives you a door at each location where cars are coupled. On Amfleet II's, it also ensures that no passenger has to walk more than 1/2 of a carlength to find a water fountain or restroom. When we had supervisors and yard crews who understood this, car inspectors said the consistency also made inspections easier because the underfloor brake equipment was aligned consistently from car to car. Nevertheless, these simple and obvious efficiencies were often ignored by other yard employees whose only interest was in getting the train put together as quickly as possible, in the fewest moves. On single vestibule cars, the B end is (almost?) invariably the vestibule end. On Superliners, a right turn at the top of the stairs will take you to the B end.
I have seen consist books that went into great detail about the proper way to assemble a passenger train, with specific instructions as to the direction of travel for each car in each individual train. PRR consist books were particularly specific about these things. I'm not sure how particular other railroads may have been, or how often these instructions were considered mere guidelines to be violated at will. I suspect it varied from railroad to railroad.
Tom
P.S. I acknowledge that the discussion has drifted away from boxcar hand brake wheels.
I have an old (c.1940) railroad book that shows several cars being 'humped' in a yard, each one with a man riding them with one hand on the brakewheel. This was before automated retarders became standard for humpyards. If the wheel was lower, you couldn't see over the top of the car to see where you were going.
Early air brakes had upright brakestaffs with the brakewheel horizontal, but generally lower than before. The brakeman wouldn't turn the brakewheel standing on top, he would have one foot on the end ladder and one on the platform.
Later when automated "one hand" brakewheels came along, which no longer required using a brakestaff, they were made with the brakewheel vertical.
A brakeman could walk the car roofs and set the brakes even on vertical brakewheels simply by going a few steps down the end ladder. That was quicker than climbing up from the ground, setting the brake, climbing down to the ground, going to the next car etc.
Once roofwalks were banned, you couldn't do that, so the brakewheel was moved lower down to be more easily accessed from the ground.
A side note on current prototype practices, I was in Palmer, Ma a few months ago and the short line crew was setting out some cars in the freight yard. I noticed the brakeman/switchman/conductor(guy on the ground) was using a boat hook to set brake wheels. I asked him about it being a curious person and found that it was his companies policy to not step between cars, so you have to use a boat hook or similar implement to set the brakes.
BMMECNYC A side note on current prototype practices, I was in Palmer, Ma a few months ago and the short line crew was setting out some cars in the freight yard. I noticed the brakeman/switchman/conductor(guy on the ground) was using a boat hook to set brake wheels. I asked him about it being a curious person and found that it was his companies policy to not step between cars, so you have to use a boat hook or similar implement to set the brakes.
Railroad Brake Sticks are all the rage on the company I work for, and a few other class ones, too. That is, if one is available you are expected to use it. They even have them in locked cases at locations in the field where trains are often tied down.
http://www.rrtoolsnsolutions.com/miscProducts/BrakeStick.asp
They allow a person to set/release wheel type brakes without having to climb on the car. It's against rules to apply/release most hand brakes (manually by hand) from the ground.
Jeff
jeffhergertRailroad Brake Sticks are all the rage on the company I work for, and a few other class ones, too. That is, if one is available you are expected to use it. They even have them in locked cases at locations in the field where trains are often tied down.
And if conductor Jones decides not to return the stick then there is a empty box for the next conductor that needs the stick or what happens if a cut is standing on the track between the box and the conductor that needs the stick? I have wondered about that.
I've seen the NS local crew use them while switching Transco here and talking to the brakeman he said those sticks are more trouble then their worth but,the current safety rules mandates there use.
Larry
Conductor.
Summerset Ry.
"Stay Alert, Don't get hurt Safety First!"
I've seen a few of those empty boxes. They have also been putting them in vans and they also have issued them to conductors. If a condr is issued one, he must use it all the time. I've had a few condrs say they were skeptical at first, but over time now like them most of the time.
I asked about them when I was a conductor and they were just coming on the market. I was in engine service by the time they started to show up here and there. Even though I'll probably never have to use one, I still have to periodically watch the "How-to" video on them.
I saw an article, which had great detail all about flat cars, with photos all around with scale builders drawings. In two of the excellent photos, they showed the ends of a car with perfectly painted A and B within circles... the symbols were very clear. Which makes it all clear as mud.
Dave
I wonder if this is sign of the times? I've seen cars stenciled with an A or B near their number because they were semi-permanently coupled and considered one car, with the same number on each car body.
Multi-platform cars "always" have those letters. If there are 5 platforms, one end platform will be an A, the other end platform (the hand brake end) will be a B, and the intermediate ones will be C, D, E (in some order I don't know). The main reason for these letters is for maintenance purposes, so people can specify which "car" they're talking about.
It's a very similar concept to the A and B end of a single car. Either way, the B "end" is the end with the brake wheel.
There are a few two-platform cars with a brake wheel on both cars, usually the outside end of the set. They will be painted orange, to warn operators that there are two semi-independent brake systems on the one "car". I expect those cars, too, have an A on one and a B on the other. In this case, probably decided by a coin toss.
Again, the big reason for all this A and B stuff is to help people describe where a problem is on a car: "The B-end truck has a bearing problem." Saves looking at one truck, don't it.
Ed
willy6Before the invention of "air brakes" the boxcar hand brake wheel was mounted on top of the boxcar and the wheel was horizontal so the brakeman could turn it to stop the car/train. Then after air brakes were introduced, the hand wheel went to the upper end of the boxcar mounted vertically and required a climb on a ladder to operate, then the hand brake wheel was move to the bottm of the car so no climbing was involved.I never understood why after the use of air brakes was the hand wheel mounted on top of the end of the car, why wasn't it just mounted at the bottom to begin with?
willy6...I never understood why after the use of air brakes was the hand wheel mounted on top of the end of the car, why wasn't it just mounted at the bottom to begin with?