. Railway mechanical engineer . entlyand positively, are also among the special features of the ma-chine which tend to bring about an increase in the life of thesaw blades. The vise is equipped with patent swiveled jaws. The rearjaw may be set at any angle up to 45 deg., in either direction,and the front or sliding jaw is self-adjusting, accommodatingitself to the angle of the fixed jaw, or to any irregularity mthe surface of the work. The machine is designed to cut stock up to 9 in. square. Forannealed and hard tool steel and steel castings the lower speedshould be used, with a cooling soluti
. Railway mechanical engineer . entlyand positively, are also among the special features of the ma-chine which tend to bring about an increase in the life of thesaw blades. The vise is equipped with patent swiveled jaws. The rearjaw may be set at any angle up to 45 deg., in either direction,and the front or sliding jaw is self-adjusting, accommodatingitself to the angle of the fixed jaw, or to any irregularity mthe surface of the work. The machine is designed to cut stock up to 9 in. square. Forannealed and hard tool steel and steel castings the lower speedshould be used, with a cooling solution. For cast iron the samespeed is used, but the machine may be run without solution,while on soft machinery steel and wrought iron the solution is\ised with the higher speed. The pvilleys are 16 in. in diameter,and take 3 in. belts. COLLAPSIBLE TAP A collapsible tap designed to meet all requirements of internalthreaded work has been developed by the Modern Tool Com-pany, Erie, Pa. The device is simple in construction, consist-. Collapsible Tap with Chasers Removed ing of as few parts as possible and is not easily disarrangedwhen put into operation. It is built to have as great an amountof rigidity as the solid tap, thereby eliminating any tendencyfor the chasers to spring and cause taper construction of the tap is shown in the drawing and one
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
