. Railway mechanical engineer . e entire machine. The speed changes are secured by means of two two-posi-tion levers and a four-position knob. The four-position knobcontrols the selection of four adjacent spindle speeds. Allspeed changes may be made without stopping the gears in the machine are made from low carbon forgings,j)ut through an annealing, carburizing and hardening process that produces a gear skin hard and tough. All gears are sand-blasted to remove furnace scale and the wire edge of rnachin-ing operations is removed in order to protect the bearingsfrom this destructive
. Railway mechanical engineer . e entire machine. The speed changes are secured by means of two two-posi-tion levers and a four-position knob. The four-position knobcontrols the selection of four adjacent spindle speeds. Allspeed changes may be made without stopping the gears in the machine are made from low carbon forgings,j)ut through an annealing, carburizing and hardening process that produces a gear skin hard and tough. All gears are sand-blasted to remove furnace scale and the wire edge of rnachin-ing operations is removed in order to protect the bearingsfrom this destructive refuse. The automatic lubrication of the machine is effected with-out pumps or any extra moving parts. This is accomplishedby a system of three reservoirs. The first reservoir is cast inthe top of the column and into this reservoir clear, fresh oilis poured. This oil seeps through felt, down tubing to cavi- First ReservoirClean Netv Oil rm!r Pour Oil in here I Speeds 1 Spindle 2 IniermediakShaftS PulleyShaff. ■Tubing-Oil Pocket Diagram of Constant Speed Drive Arrangement ties cast under the main spindle bearings, to the intermedi-ate shaft bearings and to the driving pulley. Wicks dip intothe cavities under the spindle and carry oil to the spindlebearings proper. Thus it will be seen that only new oil isadmitted to the heavily loaded bearings. The oil that passesthrough these bearings collects in the second reservoir, whereit is distributed to the speed gears and minor bearings bysplash lubrication. The overflow from the second reservoirpasses to the third reservoir, which is the feed box, oiled bysplash lubrication. The capacity of the first reservoir is sufficient to supplythe machine for about two months of ordinary is made for correcting the level of oil in the thirdreservoir should this reservoir level decrease. This is ac-complished by adding new oil and is necessary not morethan twice a year. There are no oil holes within the machi
Size: 1547px × 1615px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
