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US Patent: 1,531,490
Pneumatic drop hammer
Patentees:
George P. Macready (exact or similar names) - Providence, RI
William I. Seymour (exact or similar names) - West Barrington, RI

USPTO Classifications:
192/131R, 91/424

Tool Categories:
metalworking machines : forging machines : drop hammers

Assignees:
Franklin Machine Co. - Providence, RI

Manufacturer:
Franklin Machine Co. - Providence, RI

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 02, 1921
Granted: Mar. 31, 1925

Patent Pictures:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Franklin Machine Co.

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