. Railway mechanical engineer . ill. Valveless Air Drill Because of the elimination of the delicate valve mechanismit has been possible to make an air drill which is exception-ally light and compact. It is claimed that it will stand upunder the most severe service and that it is exceptionally the rods are fastened to the pistons by ball and socket jointssecured by ingenious locking devices which permit replace-ment of either the connecting rod or the piston. The crankshaft is a drop forging, hardened and micro-ground, and isamply large to prevent springing. It is mounted on liberalsize annular
. Railway mechanical engineer . ill. Valveless Air Drill Because of the elimination of the delicate valve mechanismit has been possible to make an air drill which is exception-ally light and compact. It is claimed that it will stand upunder the most severe service and that it is exceptionally the rods are fastened to the pistons by ball and socket jointssecured by ingenious locking devices which permit replace-ment of either the connecting rod or the piston. The crankshaft is a drop forging, hardened and micro-ground, and isamply large to prevent springing. It is mounted on liberalsize annular ball bearings, thus insuring a minimum amountof friction and wear. The connecting rods are attached tothe cranks by means of joints secured with lock nuts;these also serve to stiffen the rods. The main gear is cut from a solid blank of high-grade steel and is enclosed in a separate case which is filledwith grease, thus insuring independent and continual lubri-cation. The spindle bearing is extra long with an additional.
Size: 1497px × 1669px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
