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US Patent: 936,574
Cutting Shears
Patentee:
Joseph R. Searight (exact or similar names) - Detroit, MI

USPTO Classifications:

Tool Categories:
specialty tools : shears

Assignees:
Detroit Shear Co. - Detroit, MI

Manufacturer:
Detroit Shear Co. - Detroit, MI

Witnesses:
Clarence E. Day
Alecia Townsend
William M. Swan
Charles F. Burton

Patent Dates:
Applied: Nov. 14, 1908
Granted: Oct. 12, 1909

Patent Pictures:
Patent 936574 - edited image
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Description:
The focus of the patent is the use of compound leverage to produce shears with roughly equal force required for cutting through the entire range of the cutting surfaces. Used together with subsequent patent 942,043 for SEARIGHT's (later BARTLETT COMPOUND LEVER) shears for sheet metal.

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