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US Patent: 1,947,892
Power press control
Patentees:
Harry C. H. Walsh - Chicago, IL
Edward H. Hall - Chicago, IL

USPTO Classifications:
192/17R, 192/25

Tool Categories:
metalworking machines : metalworking presses : punch presses
metalworking machines : punch presses

Assignees:
None

Manufacturer:
Walsh Press & Die Co. - Chicago, IL

Witnesses:
Unknown

Patent Dates:
Applied: Dec. 26, 1931
Granted: Feb. 20, 1934

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Walsh Press & Die Co.
Description:
Improvements to patent 1,928,711.

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