. Railway mechanical engineer . r thesituation is reversed. On the whole, it seems that the valueof the work produced corresponds very well to the cost ofapprenticeship. We may therefore consider that the im-provement of facilities for recruiting and developing valu-able employees will be a clear profit. Four Efficient Santa Fe Machine Shop Devices loo Much Attention Can Hardly Be Given to Jigsand Fixtures Which Really Save Time or Labor 15Y J. ROBERT PHELPSApprentice Instructor, Atchison, Topeka & Santa Ke. San Bernardino. Cal. IT is often possible by the use of comparatively simple jigsor sh
. Railway mechanical engineer . r thesituation is reversed. On the whole, it seems that the valueof the work produced corresponds very well to the cost ofapprenticeship. We may therefore consider that the im-provement of facilities for recruiting and developing valu-able employees will be a clear profit. Four Efficient Santa Fe Machine Shop Devices loo Much Attention Can Hardly Be Given to Jigsand Fixtures Which Really Save Time or Labor 15Y J. ROBERT PHELPSApprentice Instructor, Atchison, Topeka & Santa Ke. San Bernardino. Cal. IT is often possible by the use of comparatively simple jigsor shop devices to extend either the range or kind ofwork performed on machine tools, the following deviceshaving been developed and tried out with good success atthe San Bernardino shops of the Atchison, Topeka &Santa Fe. Turning Bevels oil a Boring Mill A device, used on a boring mill when cutting bevels orslants, as found on piston valve spiders, followers or bullrings, is illustrated in Fig. 1. A lathe may not alwavs lie. Fig. 1 — Bevel Indicator Applied to Boring Mill available for this work and in a certain ease a large numberof spiders and followers had to be turned on a boring millAs the mill feed forced the tool out, it was necessary for themachine operator to maintain the down feed by hand, justenough to give the piece being machined the desired order to tell when the down feed was correct, the deviceillustrated was developed. A 5/16 in. round steel rod A is electric welded to a rodkey base plate approximately 5 in. by 2 in. by -\s in. To addstiffness, a shorter electric welded rod extends from the baseplate to the initial rod at a point about 12 in. from the base plate is fastened to the top of the boring mill toolbar by means of two JMs in. cap screws through suitable holesin the base plate, a standard surface gage scriber B beingslipped on over the 5/16 in. rod. A piece of sheet iron C,chalked or white washed is secured to the frame of the boringmill
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
