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US Patent: 1,280,943
Self Adjusting Guard for Hacksaws
Patentee:
Russell S. Barnum - Chicago, IL

USPTO Classifications:
30/504, 30/513

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James Henderson
W. Harding

Patent Dates:
Applied: Aug. 07, 1918
Granted: Oct. 08, 1918

Patent Pictures:
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Description:
A guard that is used primarily to reinforce the hacksaw blade to prevent breaking. The self adjustment is caused by the guard contacting the metal being cut and forced upward.

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