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US Patent: 419,270
Pliers
Improvements in Implements For Imparting Rotary Motion
Patentee:
Abbot Augustus Low - Brooklyn, NY

USPTO Classifications:
269/161, 269/238, 81/321, 81/334, 81/DIG.6

Tool Categories:
pliers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
D. W. Gardner
Wm. A. Pollock
Geo. W. Miatt

Patent Dates:
Applied: Feb. 27, 1889
Granted: Jan. 14, 1890

Patent Pictures:
Abbot Augustus Low patent January 14, 1890
USPTO pdf tiff
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Description:
A clock or watch key which can be clamped in the closed position by a thumb screw. The thumb screw also acts as the handle for the subsequent spring winding.

Low's parallel patent (no. 419,272) is a specialized modification of this idea.

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