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US Patent: 184,993
Wrench
Patentee:
Daniel C. Stillson - Somerville, MA

USPTO Classifications:
81/101

Tool Categories:
wrenches : pipe and nut combination wrenches

Assignees:
None

Manufacturer:
Boston Wrench Co. - Boston, MA

Witnesses:
F. P. Hale
F. C. Hale
Geo. Gray

Patent Dates:
Applied: Jul. 10, 1876
Granted: Dec. 05, 1876

Patent Pictures:
Daniel C. Stillson Pat. December 5, 1876
USPTO pdf tiff
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Description:
This combination nut and pipe wrench has a spring within the lower jaw. Not as effective as Stillson's famous pipe wrench (pat. no 95,744). This patent was produced as the Boston Wrench for a short time in the 1880s. 6, 9, and 12 inch sizes are listed in 1882 advertisements.

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