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US Patent: 285,733
Ratchet Drill
Self-Feeding Ratchet Brace
Patentee:
Cemer Thomas Colebrook (exact or similar names) - Islington, Middlesex England

USPTO Classifications:
408/122

Tool Categories:

Assignees:
Cemer Thomas Colebrook - Islington, Middlesex England
Joshua Rose - New York, NY

Manufacturer:
Not known to have been produced

Witnesses:
Charles Aubrey Day
Gerard Benton

Patent Dates:
Applied: Jun. 01, 1882
Granted: Sep. 25, 1883

Patent Pictures:
C. T. Colebrook patent September 25, 1883
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Description:
The ratchet brace action includes automatic advancement of the drill.

Patented in England Feb. 28, 1882

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