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GB Patent: GB-186,800,333
Wrenches: Stocks and Dies
Pierre Augustin Samuel - Paris, France
Alexander Melville Clark - London, England

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : self-adjust wrenches


Not known to have been produced

none listed

Patent Dates:
Granted: Jan. 30, 1868

Patent Pictures:
P. A. Samuel patent registered January 30, 1868 - edited from Abridgments of Specificatons
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Self-adjusting design using a double cam bearing on paired jaws.

Corresponding U.S. patent 86,181 granted Jan. 26, 1869 identifies the inventor as Pierre Augustin Samuel of Paris.

Alexander Melville Clark was a British patent agent.

Note: Early British patents (pre 1916) were numbered by the year and started at patent #1 at the start of each year in January. The patent # used in DATAMP represents the year of registration and the patent # (with "leading zeros" interposed to make the number nine digits). This patent is #333 of the year 1868.

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