Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 194
679. PNEUMATIC BREAST DRILL.—A rotary air motor is fixed to the drill-spindle, in a case to which the handlesand breast-plate are attached. Com-pressed air enters through the handlewith the valve lever and is exhaustedthrough the opposite handle. AIR POWER APPLIANCES. 183 … are shownNo. 681. 680-681. PNEUMATIC MOTOR DRILLSTOCK.—Compressed air enters throughone of the handles with its flow controlledby a lever and valve. Theexhaust enters the case fromthe port in the oscillating cyl-inder trunnions. The threedouble-acting pistons are di-rectly connected to cranks…
Mechanical movements
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