. American engineer and railroad journal . rol )LK .MUD BINO DRILL.— TOOL WOUKS COMPANY. RY A llU-nA. .MULTIPLE-VOLTAGE CROCKER-VVIIEELEU MOTOR. COLLIN WOOD SHOPS.—L. S. & M. S. RY. having sufficient rigidity in tlie frame of tlie macliine in orderto maintain the wheel axis and the work axis in exact relationto each other, and also in having the table movement sogauged that the work will traverse a distance equal to the fullwidth of the grinding wheel during every revolution of thework spindle. These conditions not only produce absolute ac-. ROTARY REVKL SHEAR FOR %-IN. ST
. American engineer and railroad journal . rol )LK .MUD BINO DRILL.— TOOL WOUKS COMPANY. RY A llU-nA. .MULTIPLE-VOLTAGE CROCKER-VVIIEELEU MOTOR. COLLIN WOOD SHOPS.—L. S. & M. S. RY. having sufficient rigidity in tlie frame of tlie macliine in orderto maintain the wheel axis and the work axis in exact relationto each other, and also in having the table movement sogauged that the work will traverse a distance equal to the fullwidth of the grinding wheel during every revolution of thework spindle. These conditions not only produce absolute ac-. ROTARY REVKL SHEAR FOR %-IN. STEEL PLATE.—LENOX MACHINK MULTIPLE-VOLTAGE CROCKER-WHEELER SHOPS.—L. S. & M. S. RY. curacy of cylindrical surface, but also enable stock to be re-moved rapidly. For producing a finer finish upon work it is,of course, only necessary to reduce the traverse speed of disc grinding machine has demonstrated absolutely that the method of draw-filing and hand-polishing is a veryexpensive method of finishing flat surfaces off smooth. The discgrinder method of finishing enables flat-surface polishing tobf done very accurately on a large variety of work at a veryslight expense, inasmuch as an experienced operator is notrequired for it, and will permit complete flnishing to be donein a great many cases where it would previously have beenconsidered prohibitive by the cost of old methods. The disc grinder in use at the Collinwood shops (see en-graving on page 146) is the Gardner spiral - groove discgrinder, made by
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
