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US Patent: 157,562
Improvement in Bit-Gages
Patentees:
John E. Windle - Springfield, MA
James C. Goodrich - Springfield, MA

USPTO Classifications:
116/67R, 33/836, 408/202

Tool Categories:
woodworking tools : hand drills : drill accessories : drill depth stops

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. H. Lathrop
H. A. Batholomew

Patent Dates:
Applied: Aug. 19, 1874
Granted: Dec. 08, 1874

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
Depth stop which can be set at various angles and rings a bell when the determined depth has been reached.

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