US Patent: 140,672 - Improvement in Saw Gummers


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US Patent: 140,672

Improvement in Saw Gummers

Patentee:

William G. Blacklidge (exact or similar names) - Metamora, IN

USPTO Classifications:

76/44

Tool Categories:

woodworking machines : circular saws : annular saws

Assignees:

William G. Blacklidge - Metamora, IN

James P. Alley - Cincinnati, OH

Manufacturer:

Not known to have been produced

Witnesses:

J. Kathman

Edward Adleta

Patent Dates:
Applied:	Apr. 11, 1873
Granted:	Jul. 08, 1873

Patent Pictures:

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Description:

Shearing cut is made with a straight-toothed reamer by the automatic action of a screw and wedge combined. This gives the reamer an oblique motion, moving both endwise and sideways at the same time.