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US Patent: 1,501,713
Folding Rule
Rustless Rule
Patentee:
James H. McCaffrey (exact or similar names) - Buffalo, NY

USPTO Classifications:
33/458, 403/96

Tool Categories:
rules : folding rules : folding rule joints

Assignees:
None

Manufacturer:
Rustless Rule Co. - Buffalo, NY

Witnesses:
Unknown
Patent Dates:
Applied: Dec. 21, 1923
Granted: Jul. 15, 1924

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Russ Allen.
Description:
Improved joint for "zig-zag" rules created by the adjoining joint plates having opposing dished pieces forming springs.

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