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US Patent: 1,146,119
Chain Pipe Wrench
George Amborn - Chaplinville, CT

USPTO Classifications:

Tool Categories:
wrenches : pipe wrenches : chain and strap wrenches

J. H. Williams & Co. - Brooklyn, NY

Not known to have been produced

Charles B. Harris
John B. Payne
René Bruine
T. F. Wallace

Patent Dates:
Applied: Feb. 19, 1914
Granted: Jul. 13, 1915

Patent Pictures:
George Amborn patent July 13, 1915
USPTO pdf tiff
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The patent improves the chain wrench based on patent nos. 876,927 and 952,860. The link connecting the chain to the handle is strengthened. The jaw plates are more widely spaced, and extensions of the handle form the "floor" of the chain holding space. Amborn patented a second modification in a parallel patent (no. 1,146,120).

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