US Patent: 1,992,726 - Hollow mortising chisel


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US Patent: 1,992,726

Hollow mortising chisel

Patentee:

Herbert E. Tautz (exact or similar names) - Milwaukee, WI

USPTO Classifications:

144/79, 30/167

Tool Categories:

woodworking machines : joint making machines : mortising machines

woodworking machines : wood drilling and boring : mortising machines

Assignees:

Delta Mfg. Co. - Milwaukee, WI

Manufacturer:

Delta Mfg. Co. - Milwaukee, WI

Witnesses:

Unknown

Patent Dates:
Applied:	Sep. 15, 1934
Granted:	Feb. 26, 1935

Patent Pictures:

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Vintage Machinery entry for Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl.

Description:

This patent number is listed in the 1938 Delta catalog, for the "Special Hollow Chisels". These chisels are recommended for occasional use, not recommended for production work.