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US Patent: 414,663
Wrench
TRIMO pipe wrench
Patentee:
John H. Vinton - Boston, MA

USPTO Classifications:
81/101

Tool Categories:
wrenches : pipe wrenches

Assignees:
Trimont Manufacturing Co. - Portland, ME

Manufacturer:
Trimont Mfg. Co. - Roxbury, MA
Trimont Mfg. Co. - Portland, ME

Witnesses:
Geo. W. Gregory
Blanche Dewar

Patent Dates:
Applied: Dec. 18, 1888
Granted: Nov. 05, 1889

Patent Pictures: [ 1 | 2 ]
J.H. Vinton Pat. Nov. 5, 1889
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Description:
Together with Vinton's Feb. 12, 1889 patent 397,618 and his June 18, 1889 design patent D19,168 this is the first TRIMO pipe wrench; the markings also appear on the jaw of the TRIMO EMERGENCY pipe wrench -- a six-inch version with a screwdriver concealed inside a cap on the end of the handle.

Corresponding British patent GB-188902419 was registered February 12, 1889.

No. 429,088 was the next stage in the evolution of TRIMO pipe wrenches.

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