. Electric railway journal . Iff .iff 0 2 4 6 6 10 12 14 76 16 20Turns CURVES SHOWING FORCE EXERTED BY ORDINARY SPRING ANDNEW FREE-WINDING SPRING necessary to pull out the rope. With the Earll retrieverit is not necessary to do this by one long continuouspull, to which conductors so much object and whichmakes it dangerous, if not impossible, to rewind the re-triever while the car is in motion. With this retrieverthe rewinding may be accomplished by ratcheting or re- ciprocating the rope in and out, in as long or shortstrokes as convenient. The emergency release. The emergency release makesit p
. Electric railway journal . Iff .iff 0 2 4 6 6 10 12 14 76 16 20Turns CURVES SHOWING FORCE EXERTED BY ORDINARY SPRING ANDNEW FREE-WINDING SPRING necessary to pull out the rope. With the Earll retrieverit is not necessary to do this by one long continuouspull, to which conductors so much object and whichmakes it dangerous, if not impossible, to rewind the re-triever while the car is in motion. With this retrieverthe rewinding may be accomplished by ratcheting or re- ciprocating the rope in and out, in as long or shortstrokes as convenient. The emergency release. The emergency release makesit possible under any conditions to withdraw rope andrun up the trolley pole at any speed. If a car shouldbecome stalled on a steam road crossing with the poledown, the pole could be run up to the wire means of the emergency release the conductor can, bymerely holding the release lever down, run up the trolleyto the wire as fast as he chooses. Even if the operatingmechanism should get out of order, the emergency re-. CROSS-SECTION OF NO. 4-A RETRIEVER lease is always available to run the pole up to the is never necessary to cut the rope where this retrieveris used. The emergency release consists merely of a looseratchet ring in the back, normally held by the releaselever but capable of being released when the lever isdepressed. The teeth in the ratchet ring take the placeof and perform the same function as the teeth whichare cast solid in the back where this feature is not used. The emergency release is also a great convenience inhandling the retrievers in the shop. When a retrieverhas to be overhauled it is both safer and quicker to tripthe retriever by a sharp jerk on the rope and then towithdraw the rope without rewinding the retrievingspring, by means of the emergency release, before tak-ing the retriever from the car. The emergency releasealso makes it unnecessary to send a man to the roof ofthe car to detach the rope from the pole when the re-triever has
Size: 1546px × 1616px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
