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GB Patent: GB-187,201,884
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Patentee:
John Arthur - Sandycroft, Hawarden, Flint Co., England

USPTO Classifications:

Tool Categories:
wrenches : auxiliary wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Granted: Jun. 22, 1872

Patent Pictures:
John Arthur patent June 22, 1884 - edited from Abridgments of Specifications
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1,884 in Chronological and Descriptive Index (1872)
Description:
A double-sized jaw opening corresponding to a "rectangular nut." -- The specifications for the patent describe nuts and bolts with "one heavy side" for the bolt heads and nuts, to keep railroad fish plate bolts from vibrating loose -- the theory being that gravity would keep the heavy side down.

Note: Early English 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 total nine digits). This patent is #1,884 of the year 1872.

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