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| Re: Yankee Stadium and the old IRT 9th Ave. El Connection (685001) | |||
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Re: Yankee Stadium and the old IRT 9th Ave. El Connection |
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Posted by randyo on Mon Sep 22 17:27:27 2008, in response to Re: Yankee Stadium and the old IRT 9th Ave. El Connection, posted by JOE @ NYCMTS - NYCTMG on Mon Sep 22 07:57:29 2008. The IRT prewar stock never received H type automatic drawheads. Although the J type couplers used on IRT eqipment made air as well as mechanical connections, thes were not done automatically. First, J type couplers did not have atppets but only open gasket sockets so that after the mechanical couplong was made, the air line angle cocks had to be opened between the cars. When it ws necessary to cut, the locks on the drawheads had to be opened manually by a lever on the coupler. Electrical connections were done on both Hi-V and Lo-V cars by means of jumpers located near the sides of the cars on the Hi-vs and under the drawhead on Lo-Vs. Also, whereas the tappets on H drawheads met at 45 degree angles, the gasket sockets on J drawheads met at 90 degree angles to each other so that in the event of an emergecy requiring coupling (iron only) a Hi or Lo-V to an R type car, the tappets on the H drawhead would be destroyed. And befor you ask, when I was a M/M I was Lo-V qualified and that's where I picked up this info. As an aside, I understand that the first 12 Steinway cars also known as "boilers" were equipped with an H drawhead and a slide type electric portion like the BMT steels. Due, however to the steep grades in the Steinway Tunnels combined with the nature of a slide type of electric portion, the slides were prone to breakage and the IRT decided to return to the jumpers and J drawheads which were recently installed on the Hi-Vs and which were perceived to be more reliable. By the way, due to the aforementioned problems between J and H drawheads, the museum Lo-Vs now do have H drawheads in the event they need to be coupled to SMEE cars. I would also imagine that they also now carry an H to Ohio Brass adapter for coupling to an R-142. |
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