Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 269
pawls throw one or the other pawl out of lockfor reversing the motion. 1020. RECIPROCAL CIRCULAR MOTION from rec-tilinear motion of a nut on a quick thread. The reciprocat-ing or Persian drill stock. The screw is swivelled in thehfead of the stock, allowing a free movement of the drill bythe motion… … 1022. CONTINUOUS MOTION RATCHETfrom an oscillating arm. Three bevel gears, two ofwhich have ratchets with pawls on opposite sides, sothat there is a forward motion to the spindle at eachstroke of the arm. 1022 a. Elevation. 1023. STOPS OF VARIOUS FORMS fora ratchet wheel. Hook and straight gravity…
Mechanical movements
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