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GB Patent: GB-187,905,295
Improvements in Tricycles and Parts of Bicycles and Other Velocipedes, and in Wrenches for the Same ..
William Bown - Birmingham, England
John Derry - Birmingham, England

USPTO Classifications:

Tool Categories:
wrenches : bicycle or pocket wrenches


William Bown - Birmingham, England

none listed

Patent Dates:
Granted: Dec. 27, 1879

Patent Pictures: [ 1 | 2 ]
W. Bown and J. Derry patent registered Dec. 27, 1879 - edited from "Abridgments of Specifications" etc.
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The handle includes a clamping action for a sliding jaw with a wedge-shaped base; see also GB-187900369 for a similar adjustment means. Ron Geesin's THE ADJUSTABLE SPANNER notes THE HOLDFAST adjustable spanner corresponding to these patents and produced by Bown's company.

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 total nine digits). This patent is #5,295 of the year 1879.

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