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Hugh Shaw
John Young
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Individual
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Publication of GB191405586ApublicationCriticalpatent/GB191405586A/en
B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
B27C3/00—Drilling machines or drilling devices; Equipment therefor
B27C3/08—Operator-supported drilling machines or devices
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Life Sciences & Earth Sciences
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Engineering & Computer Science
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Mechanical Engineering
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Wood Science & Technology
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Forests & Forestry
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Drilling And Boring
(AREA)
Abstract
5586. Shaw, H., and Young, J. March 5. Drilling-machines; ratchet braces. - A portable drilling-machine has the spindle 6" driven through gearing 5<b>, 4 from a hand-crank 2<a> or alternatively through gearing 12 from a ratchet 14 or chain pulley, 14<a>. The feed screw is connectable to the spindle through a clutch 11. In a modification, worm and bevel gearing are used to drive the spindle from a hand-crank.