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GB Patent: GB-187,202,424
An Improved Adjusting Spanner
Patentee:
Walter B. Chapin (exact or similar names) - London, England

USPTO Classifications:

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Granted: Aug. 14, 1872

Patent Pictures:
Walter B. Chapin patent Aug. 14, 1872 - edited from Abridgments of Specifications
Espacenet patent
Report data errors or omissions to steward Stan Schulz
2,424 in Chronological and Descriptive Index (1872)
Description:
The text describes a movable jaw that slides on a bar with teeth on both sides. The jaw has an angled opening with edges to engage the teeth. There is no drawing. The inventor was a U.S. citizen living in London.

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 issue and the patent # (with "leading zeros" interposed to make the number total nine digits). This patent is #2,424 of the year 1872.

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