. Railway mechanical engineer . Jacks with Adjustable Heel Plates When so desired it may be rcmuved and the jack operated uponits own base. In designing these tools special attention has been given tothe elimination of unnecessary parts in order that the numberof repair parts required may be kept at a minimum. The partsare easily assenililed. ami repairs may be made by the ordinaryshop labor. FRICTION SPRING DR.\FT RIGGING The Slick friction spring draft rigging, which is inthe accompanying illustration, consists of a number of springsformed of comparatively thin steel plates. These pla
. Railway mechanical engineer . Jacks with Adjustable Heel Plates When so desired it may be rcmuved and the jack operated uponits own base. In designing these tools special attention has been given tothe elimination of unnecessary parts in order that the numberof repair parts required may be kept at a minimum. The partsare easily assenililed. ami repairs may be made by the ordinaryshop labor. FRICTION SPRING DR.\FT RIGGING The Slick friction spring draft rigging, which is inthe accompanying illustration, consists of a number of springsformed of comparatively thin steel plates. These plates aresquare or rectangular and are corrugated, the axes of the cor-. Sllck Friction Draft Rigging rugations being parallel to each other. The plates are placed sothat the corrugations of each one are at right angles to those ofthe two adjoining ones. The arched portions of the plates arethus in contact with each other, and each plate forms an abut- 260 AtU. GAZETTE. MEliiAXKAl. \(> sy. Xo. ment against which the adjoining plate operates. The devicemay be made either with single corrugated spring plates orwhere greater stiffness is desired the elements may be made upof two or more laminations each. The construction of the rig-ging is otherwise similar to that commonly used with other typesof spring elements. When under load the plates withstand stresses first by thespring action of the corrugated portions, which tend to llattenout under pressure, and in addition by the frictional resistanceto the movement of the plates one upon another due to the flat-tening out of the corrugations. This action tends to dissipatea portion of the energy de
Size: 1555px × 1607px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
