. Railway master mechanic . in. slock. Both the cone and face gear are loose on the spindleand are driven, one by a friction clutch, the other bya saw tooth clutch, the clutches being thrown by alever placed at the front of the machine convenientto the hand of the ojierator. The friction obviatesthe shock incident to starting the spindle at a highvelocity, as the motion is gradual, while the toothclutch on the face gear insures steadiness of motionunder heavy strain. The change from cone speedsto gear speeds is made instantaneously by throwing , 1891. THE RAILWAY MASTER MECHANIC. this c
. Railway master mechanic . in. slock. Both the cone and face gear are loose on the spindleand are driven, one by a friction clutch, the other bya saw tooth clutch, the clutches being thrown by alever placed at the front of the machine convenientto the hand of the ojierator. The friction obviatesthe shock incident to starting the spindle at a highvelocity, as the motion is gradual, while the toothclutch on the face gear insures steadiness of motionunder heavy strain. The change from cone speedsto gear speeds is made instantaneously by throwing , 1891. THE RAILWAY MASTER MECHANIC. this clutch. The turret is to a heavy saddleand revolves automatically. One siiecial feature ofthis tool is the fact that the point at which the revo-lution takes place is adjustable and is indicated by agauge at the front of the turret slide; hence the tur-ict may te as quick as it clears the work,and when operating on short work it is not necessaryto run back a great distance in order to complete therevolution. The carriage has power feed operated from the backfeed shaft indei>endent of the motion obtained by theleaders. ,\ pump is supplied with each machinewhich pumps the oil or water from a tank in the bedof machine, and is provided with a safcocks at the tools are closed. The extensive outfit usually furnished with the ma-chine consists of taps, dies, etc., for cutting from J U in. inclusive. This machine is throughoutheavy and substantia
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Keywords: ., bookcentury1800, bookdecade1870, bookidr, booksubjectrailroadcars
