. Railway mechanical engineer . Fig. 3—Pneumatic Forging Press Adapted to a Wide Range of Worl< died in a novel manner. The method used on dump doorsis illustrated in Fig. 4. After the doors are assembledtrunnions are bolted on each end near the center. The doorsare then placed on horses directly under a portable air rivet-er, being supported by the trunnions, while a hinged dog attached to one of the horses keeps the door from turningon its supports. The riveter is supported overhead on arail, along which it can be moved, while the height is ad-justed Ijy a chain hoist. When the rivets in
. Railway mechanical engineer . Fig. 3—Pneumatic Forging Press Adapted to a Wide Range of Worl< died in a novel manner. The method used on dump doorsis illustrated in Fig. 4. After the doors are assembledtrunnions are bolted on each end near the center. The doorsare then placed on horses directly under a portable air rivet-er, being supported by the trunnions, while a hinged dog attached to one of the horses keeps the door from turningon its supports. The riveter is supported overhead on arail, along which it can be moved, while the height is ad-justed Ijy a chain hoist. When the rivets in the upper halfof the door have been driven it is revolved on the trunnionsto bring the other end up. In this way it is possible toliandle the work with riveters having a reach equal to onlyone-half the width of the parts which are riveted. Thework is done more rapidly than where air hammers are usedand much better workmanship is secured. The application of the air riveters to the riveting of center. Fig. -Riveting Dump Door on Trunnion Supports sills is shown in Fig. 5. Here the riveter is suspended at afi.\ed point and can only be moved vertically. The workafter being assemljled is mounted on strong push cars andmoved along under the riveter. Some of the push cars arefitted with trunnion supports and in case all the doors can-not be handled on the horses some are mounted on cars andfinished at the stationary riveter. The assembling of the cars is done by gangs consisting of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
