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US Patent: 881,216
Chain Pipe Wrench
George Amborn - New York, NY

USPTO Classifications:

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

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

Not known to have been produced

Eugene V. Myers
Theodore T. Snell
Fred White
René Bruine

Patent Dates:
Applied: May 06, 1907
Granted: Mar. 10, 1908

Patent Pictures:
George Amborn patent March 10, 1908
USPTO pdf tiff
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Improvement to wrench of the type in patent no. 698,780, to allow the chain to pass to either side of the center line of the handle regardless of which "face" of the toothed jaw was engaging the work. The construction includes alternate provisions for allowing the chain sufficient "free play" to allow the chain to swing to either side of the handle and head.

Arthur C. Fraser & Co. - patent attorneys

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