. American engineer and railroad journal . WHEEL TONGS. of fine stone, and above this green and burnt sand to the topof the walls. Extending over each annealing pit is a traveling cranehaving a span of 44 ft. and a capacity of 4,000 lbs. This cranehas four independent hoists, spaced 11 ft. apart, each drivenby a 7% motor, controlled separately from the cab. Thecrane is operated by a 10 motor and traverses at a speedof 500 ft. per minute. The hoists operate at speeds up to 100ft. per minute. There is a spare hoist on the bridge and anextra motor for traversing which can quickly be con
. American engineer and railroad journal . WHEEL TONGS. of fine stone, and above this green and burnt sand to the topof the walls. Extending over each annealing pit is a traveling cranehaving a span of 44 ft. and a capacity of 4,000 lbs. This cranehas four independent hoists, spaced 11 ft. apart, each drivenby a 7% motor, controlled separately from the cab. Thecrane is operated by a 10 motor and traverses at a speedof 500 ft. per minute. The hoists operate at speeds up to 100ft. per minute. There is a spare hoist on the bridge and anextra motor for traversing which can quickly be connected upin case the regular motors should get out of order. The wheels from the moulding floor, which are delivered in. WHEEL TONGS. throwing the hook which locks the toggle connection to theright. As the tongs are hoisted the lower jaws are forcedoutward and firmly grip the wheel. Near the top of the framework is hinged an auxiliary latch with an extended arm, bywhich it may be thrown in or out of operation. Before lower-ing the wheel into the annealing pit this auxiliary latch isthrown over so that when the wheel strikes the bottom thetoggle closes and the auxiliary latch engages the pin andprevents the tongs from again griping the wheel. 126 AMERICAN ENGINEER AND RAILROAD JOURNAL. After remaining in the annealing pits five days the wheelsare taken out and delivered to the cleaning floor at the oppositeend of the pits from the track on which they are delivered,and after they have been cleaned, inspected and measured arerolled to the storage platform, which is on a level with thecleaning floor, is 3S ft. wide, extends along the full length ofthe foundry, and is 4 ft. above the top of the shipping trac
Size: 1349px × 1852px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
