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US Patent: 840,528
Double boring-machine
Patentee:
John T. Towsley (exact or similar names) - Cincinnati, OH

USPTO Classifications:
74/665R

Tool Categories:
woodworking machines : wood drilling and boring

Assignees:
None

Manufacturer:
John T. Towsley Mfg. Co. - Cincinnati, OH

Witnesses:
Walter F. Murray
Agnes McCormack

Patent Dates:
Granted: Jan. 08, 1907

Patent Pictures:
USPTO (New site tip)
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Vintage Machinery entry for John T. Towsley Mfg. Co.
Description:
Horizontal borer with one fixed spindle, and one spindle that rotates about the fixed spindle, and the distance between them can be varied.

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