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US Patent: 13,383
Machine-drill
Patentees:
Thomas Newby - Richmond, IN
James Conner - Richmond, IN

USPTO Classifications:
74/841

Tool Categories:
metalworking machines : drilling and boring : drill presses
woodworking machines : wood drilling and boring : drill presses

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Benjamin H. Van Zant
John Finley

Patent Dates:
Granted: Aug. 07, 1855

Patent Pictures:
USPTO pdf tiff
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Description:
Claim: "The use of the lever, vertical shaft, spring and trigger n and 8, spring z and cam, by which the action of the drill in drilling is regulated or grooved in its depth."

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