. American engineer and railroad journal . an-not be forced down too tightly, a sensitive adjustment is pro-vided by the knurled knobs. To insure still greater stiffness and rigidity the pad at thetop may be planed, and by means of an angle bracket be con-nected to the wings of the carriage on the opposite side. Itis claimed that double the output may be obtained on heavybars on one of the companys high speed lathes with this de-vice over that which may be obtained on the same lathe with-out a rest. AUTOMATIC VALVE GRINDING MACHINE. This machine was designed to facilitate the manufactureand re
. American engineer and railroad journal . an-not be forced down too tightly, a sensitive adjustment is pro-vided by the knurled knobs. To insure still greater stiffness and rigidity the pad at thetop may be planed, and by means of an angle bracket be con-nected to the wings of the carriage on the opposite side. Itis claimed that double the output may be obtained on heavybars on one of the companys high speed lathes with this de-vice over that which may be obtained on the same lathe with-out a rest. AUTOMATIC VALVE GRINDING MACHINE. This machine was designed to facilitate the manufactureand repairs of the cut out and angle cocks used in connectionwith air brake apparatus but may easily be arranged to grindany plug valve or valves with disc seats such as are used ingeneral practice. It is claimed that an eight machinewill grind from 200 to 400 old cocks or from 500 to 600 newones in 10 hours and that very much better work is done bymachine than by hand grinding. The valve to be ground in is fastened to the end of one of. SPEED FOIXOWEB BE8T— £ BHIFLE1 MACHINE TOOLCOMPA> Y. AUTOMATIC \.\: GRINDING MACHINE. the spindles and the body of the valve is simplj placed onthe valve and is kepi from revolving by the uprights or col-umns which ase placed at either side of each spindle. Noforce other than the weight of the body is required to holdthe i\m> parts together while they are being ground. Bymeans of the cam placed just above the spur gear on eachspindle the body is lifted off the valve twice during eachrevolution of the spindle. Each spindle may be stopped or Aran, 1905. AMERICAN ENGINEER AND RAILROAD JOURNAL. 143 started independently of the others by means of the jawclutches. An eight spindle machine, such as the one illustrated, weighsabout 1,000 lbs. and occupies less than 4 sq. ft. of floor addition to the eight spindle grinder the Automatic ValveGrinding Machine Company of Knoxville, Tenn., also makefour and six spindle m
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
