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US Patent: 283,801
Wrench
Improvement in Ratchet-Wrenches
Patentee:
Darwin V. Miller (exact or similar names) - Weedsport, NY

USPTO Classifications:
192/43.1, 81/63, D8/25

Tool Categories:
wrenches : ratchet wrenches

Assignees:
None

Manufacturer:
Unknown

Witnesses:
C. C. Adams
James Wright
O. L. Gildersman

Patent Dates:
Applied: Mar. 03, 1883
Granted: Aug. 28, 1883

Patent Pictures: [ 1 | 2 ]
Dawin V. Miller Pat. August 28, 1883
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Description:
The wrench has reversible ratchet heads at both ends, with different size sockets on opposite sides. One wrench would have four commonly used sizes. The center slide shifts a single leaf spring which shifts both sets of pawls.

A known example marked only with the patent date appears to correspond to Miller's Sept. 2, 1884 modified case patent (no. 304,542).

The patent is also cited in a double-end ratchet wrench that incorporates modifications patented by David Follett on January 12, 1886 (no. 334,010).

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