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US Patent: 1,142,235
Pipe Clamp
Patentee:
Andrew H. Caldwell (exact or similar names) - Port Byron, NY

USPTO Classifications:
81/39

Tool Categories:
trade specific : plumber

Assignees:
None

Manufacturer:
Unknown

Witnesses:
James W. Fitzgerald
Howard J. Walts
Chas. H. Young
G. F. Pickard

Patent Dates:
Applied: Jul. 11, 1913
Granted: Jun. 08, 1915

Patent Pictures: [ 1 | 2 ]
Patent 1,142,235 -edited image
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Pat. 1,142,235 (ESPACENET)
Description:
A pipe clamp with soft metal "non-marring" faces, and fitting two different common pipe sizes (the specifications note 1/2" & 3/8" water supply for bathroom fixtures). The clamps would hold pipe for threading, etc. The claims relate to the "obtuse angle" between the two sections of the clamp.

A known example is marked only with the patent date.

Compare "Hall's Pipe Clamp" (pat. 527,200]

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