US Patent: 472,712 - Bed for metal-working machines


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US Patent: 472,712

Bed for metal-working machines

Patentee:

John McKenna (exact or similar names) - Johnstown, PA

USPTO Classifications:

29/DIG.101, 33/568, 409/219

Tool Categories:

metalworking machines

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

J. N. Benford

Robert S. Murphy

Patent Dates:
Applied:	Jul. 14, 1891
Granted:	Apr. 12, 1892

Patent Pictures:

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Description:

The innovation is a bed with bolt-slots passing through the main bed, allowing chips to fall through, plus a chip-pan underneath that can be pulled out to dispose of the chips.