US Patent: 228,958 - Calipers and Dividers


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US Patent: 228,958

Calipers and Dividers

Patentee:

William H. Warren (exact or similar names) - New York, NY

USPTO Classifications:

33/558.1

Tool Categories:

layout tools : calipers

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

L. L. Storer

C. Sedgewick

C. Neveux

Patent Dates:
Applied:	Dec. 22, 1879
Granted:	Jun. 15, 1880

Patent Pictures:

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Description:

This design features a slotted arm attached to a threaded rod. The slotted arm holds a clamping screw for coarse adjustment, enad the threaded rod engages a nut for fine adjustment