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US Patent: 496,123
Folding Steel Measure
Zig Zag Rule
Patentee:
Willie L. E. Keuffel - Hoboken, NJ

USPTO Classifications:
33/418, 33/495, 7/163

Tool Categories:
rules : folding rules : folding rule joints

Assignees:
None

Manufacturer:
Keuffel & Esser Co. - New York, NY

Witnesses:
Paul Goepel
Charles Schroeder

Patent Dates:
Applied: Jun. 07, 1892
Granted: Apr. 25, 1893

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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Description:
Steel zig zag rule with pivot pins arranged to avoid contact with the pivot pins of adjacent segments.

Known example marked with manufacturer and patent date.

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