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US Patent: 399,641
Tool Handle
Adjustable Graver Handle
Patentee:
John Henry Wundes - Lancaster, PA

USPTO Classifications:
279/93

Tool Categories:
tool holders
woodworking tools : chisels

Assignees:
E. F. Bowman - Lancaster, PA
W. F. Musser - Lancaster, PA

Manufacturer:
Ezra F. Bowman & Co. - Lancaster, PA

Witnesses:
Alan A. Herr
J. H. Grove
Robt Prutt
Wm. H. Muzzy

Patent Dates:
Applied: Oct. 22, 1888
Granted: Mar. 12, 1889

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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Description:
This patent covers a design for gravers with replacable and/or adjustable cutters. The handle features a serrated detent, allowing the cutter to be advanced as it is shortened through sharpening.

Known examples are marked with the manufacturer name and patent date.

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