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US Patent: 22,157
Wrench
Pipe-Tongs
Patentee:
James R. Brown - Boston, MA

USPTO Classifications:
81/400

Tool Categories:
wrenches : pipe wrenches : pipe tongs

Assignees:
None

Manufacturer:
E. H. Ashcroft Co. - Boston, MA
J. J. Walworth & Co. - Boston, MA
Ashcroft Mfg. Co. - Boston, MA

Witnesses:
R. H. Eddy
F. P. Hales

Patent Dates:
Granted: Nov. 30, 1858

Patent Pictures: [ 1 | 2 ]
James R. Brown patent Nov. 30, 1858
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Description:
Brown's patent pipe tongs had the fulcrum point in a block which could be moved by an adjusting screw. Brown's Pipe Tongs (with later refinements) was a "staple" tool for plumbers etc. for decades. Late 19th & early 20th Century catalog illustrations show a patent extension dated Nov. 30, 1872 -- the Patent Gazette notes it Nov. 19, 1872, antedated to Jan. 10, 1872). Brown patented an "improvement" on July 7, 1868 (Pat. No. 79,724).

Brown became insolvent in 1860; Edward H. Ashcroft subsequently acquired rights to the Brown patent, and filed suit against J.J. Walworth Co., which had a competing claim to the rights and had been marketing Brown's pipe tongs. Ashcroft won the suit [Ashcroft v. Walworth (1872)]. Ashcroft registered his "arm & hammer over the initials EHA" trade mark for the tongs Nov. 7, 1876 {trade mark no. 4102).

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