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US Patent: 544,030
Brush
Improved Frame for Heads and Bodies of Brushes
Patentee:
William R. Derr - Baltimore, MD

USPTO Classifications:
15/113, 15/204

Tool Categories:

Assignees:
None

Manufacturer:
Unknown

Witnesses:
E. G. Brashears
M. Johnson
Frances Elizabeth Derr
S. Brashears

Patent Dates:
Applied: Oct. 03, 1892
Granted: Aug. 06, 1895

Patent Pictures: [ 1 | 2 ]
William R. Derr patent August 6, 1895
USPTO pdf tiff
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Description:
The patent covers the malleable iron frame for circular tufts of brush bristles that are wedged in by a central wedge, or by the wedge-shaped end of an in-line handle. The essential feature is that the opening for the bristles is a series of intersecting circles, with tapered sides.

Produced as a shoe-blacking brush. The handles have survived without their bristles, and the resulting form leads some to image they are a specialty wrench.

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