CA Patent: 420,604 - Cutting and boring mechanism


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CA Patent: CA-420,604

Cutting and boring mechanism

Patentee:

John T. Hepburn (exact or similar names) - Toronto, ON Canada

USPTO Classifications:

Tool Categories:

metalworking machines : boring and turning machines

Assignees:

None

Manufacturer:

John T. Hepburn, Ltd. - Mississauga, ON Canada

Witnesses:

Unknown

Patent Dates:
Granted:	Jun. 06, 1944

Patent Pictures:

CIPO Data
Report data errors or omissions to steward Jeff Joslin
"Vintage Machinery" entry for John T. Hepburn, Ltd.

Description:

"While the present invention may be applied widely it is convenient to illustrate it by reference to the boring of breech blocks for large calibre guns."