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| Re: Nighttime Shot of 3rd Ave El at 67th Street (1953) (1457843) | |||
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Re: Nighttime Shot of 3rd Ave El at 67th Street (1953) |
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Posted by randyo on Mon Dec 11 01:17:58 2017, in response to Re: Nighttime Shot of 3rd Ave El at 67th Street (1953), posted by JOE @ NYCMTS - NYCTMG on Sun Dec 10 17:57:32 2017. The brake handle in the photo is the standard type of brake handle used on cars with electro - pneumatic braking and fits brake valves form ME-21 (which was used on the Hi-Vs and Flivvers) up to the current ME-43s as used on the R-62s and 68s. The brake handles used on straight pneumatic brake valves were entirely different and while AFAIK, all BMT el cars used one type of handle, the Manhattan el cars used a similar but different type and the IRT and BMT el brake handles were not interchangeable. The first IRT subway cars the Composites the Gibbs and the Deck Roofers used that same brake handle as the manhattan el cars since electro pneumatic braking was not developed or installed till around 1910 when the IRT subway cars were equipped with E/P brakes. From what I have read, the IRT cars originally did not even have WABCO brakes but had brake equipment from a company call Christensen which was later absorbed by Allis-Chalmers which probably explains the difference in brake handles although much NYAB equipment is identical to WABCO and uses the same brake handles. By the way prewar IRT equipment didn't use cutting keys. Although their connections were part of the drawhead like an H coupler, the air angle cocks had to be opened and closed manually for cuts and adds and the cuts made by operating a manual lever beneath the drawhead often with great difficulty. |
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