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US Patent: 49,634
Carriage-Curtain Fastening
Improvement in Curtain-Knobs
Patentee:
Calvin C. Kroh - Tiffin, OH

USPTO Classifications:
24/694

Tool Categories:
wrenches : auxiliary wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. Schafer
R. T. Campbell
Thos. H. Berry
Sam;. Chance

Patent Dates:
Granted: Aug. 29, 1865

Reissue Information:
Reissued as RE4,019 (Jun. 07, 1870)

Patent Pictures:
Calvin C. Kroh Pat. August 29, 1865
USPTO pdf tiff
Google Patents
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Description:
This knob for fastening carriage curtains has a screw shank, and a flanged base shaped to accept a polygonal socket wrench or "T" wrench. A bit brace socket wrench is shown in the drawing.

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