US Patent: 278,935 - Improvement in Saw-Frames


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US Patent: 278,935

Handsaw
Improvement in Saw-Frames

Patentee:

George W. Griffin (exact or similar names) - Franklin Falls, NH

USPTO Classifications:

30/513

Tool Categories:

metalworking tools : hacksaws

Assignees:

None

Manufacturer:

C. E. Jennings & Co. - New York, NY

Witnesses:

Patent Dates:
Applied:	Apr. 04, 1883
Granted:	Jun. 05, 1883

Patent Pictures: [ 1 | 2 | 3 ]

George W. Griffin patent June 5, 1883

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Description:

The frame is solid. The main focus of the patent is the blade tensioner. It is a lever that folds into the handle.

Griffin's Nickel-Plated Hacksaw appears in 1891 C.E. Jennings (New York) advertisements in IRON AGE. It includes provision to rotate the blade in the frame as appears in the "upper" nickel plated example shown in the 2nd image.