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US Patent: 1,286,525
Joint for Folding Rulers
Patentee:
Fred Buck - Saginaw, MI

USPTO Classifications:
33/496

Tool Categories:
rules : folding rules : folding rule joints

Assignees:
Lufkin Rule Co. - Saginaw, MI

Manufacturer:
Lufkin Rule Company - Saginaw, MI

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 26, 1918
Granted: Dec. 03, 1918

Patent Pictures: [ 1 | 2 ]
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Description:
Movement to an inexpensive method of constructing rule joints. Pointed tips which aid in fixing the joint to the wood and reduce the number of fixing pins to one per hinge. Found on Lufkin rules as well as unmarked rules. Utilized on the Lufkin #651B rule. Fred Buck also patented Lufkin's three fold rule with level 1,120,443

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