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US Patent: 81,769
Improvement in drills
Drill
Patentee:
Frank Glasser - Mystic Bridge, CT

USPTO Classifications:
81/34

Tool Categories:
woodworking tools : hand drills : eggbeater drills

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
George W. Mallery
E. P. Randall

Patent Dates:
Granted: Sep. 01, 1868

Patent Pictures:
Glasser 81,769
USPTO pdf tiff
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Description:
A breast drill with double pinions. The design allows for continuous motion operation or use as a ratchet drill. When you view the patent drawing you may understand the value of patent 80,812.

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