. Railway master mechanic [microform] . 4°^ Fig. 2—Tool Holder for Slotting Machine. September, 1904. RAILWAY MASTER MECHANIC 353. 1 ;: :■■■■■; »,■■■■,■iiiiiiiiiiiiinpi1 i|iiM|i|i|iiiiiiilii ■ Fig. i^-Drill Chuck for High Speed Tool Steel. The general arrangement of parts and their detailsare shown by the figure. The tool is inserted in a slotin the lower part of the chuck heretofore lower portion of this slot is 5-16 in. wide, an open-ing just sufficient to accommodate the tool. The up-per portion -of the slot is 9-16 in. wide to accommo-date two jaws whose duty it is to hol
. Railway master mechanic [microform] . 4°^ Fig. 2—Tool Holder for Slotting Machine. September, 1904. RAILWAY MASTER MECHANIC 353. 1 ;: :■■■■■; »,■■■■,■iiiiiiiiiiiiinpi1 i|iiM|i|i|iiiiiiilii ■ Fig. i^-Drill Chuck for High Speed Tool Steel. The general arrangement of parts and their detailsare shown by the figure. The tool is inserted in a slotin the lower part of the chuck heretofore lower portion of this slot is 5-16 in. wide, an open-ing just sufficient to accommodate the tool. The up-per portion -of the slot is 9-16 in. wide to accommo-date two jaws whose duty it is to hold the tool se-curely. The inner edges of the jaws are grooved toencompass the edges of the tool and the outer edgesof the jaws are given a decided taper, as shown. Tooperate the jaws a sleeve having a portion tapered tocorrespond with the taper of the jaws works over anadjoining threaded surface, so that backing the sleevetowards the shank loosens the jaws, while running itin the opposite direction forces the jaws togetherthereby clamping the tool. The outer surface of thesleeve is knurled to provide a
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Keywords: ., bookcentury1800, bookdecade1890, bookidrailwaymaste, bookyear1895
