Home| FAQ Search:Advanced|Person|Company| Type|Class Login
Quick search:
Patent number:
Patent Date:
first    back  next  last
US Patent: 1,924,545
Drop hammer
Patentees:
Reginald P. Fitzgerald (exact or similar names) - Braintree, MA
William H. J. Fitzgerald (exact or similar names) - Braintree, MA

USPTO Classifications:
91/27, 91/31, 91/410, 91/424, 92/240, 92/258

Tool Categories:
metalworking machines : forging machines : drop hammers

Assignees:
Pneumatic Drop Hammer Co. - Boston, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Nov. 22, 1928
Granted: Aug. 29, 1933

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Pneumatic Drop Hammer Co.
Description:
"Drop hammers are used largely for producing die work which requires such control of the hammer that a proper and accurate blow shall be struck, that no 'shivering' of the hammer shall take place on impact and a secondary blow avoided; otherwise, the pattern work of the die will be destroyed. The present invention comprises certain improvements upon the drop hammer construction disclosed in Patent No. 1,722,506, Henning G. Sahlin, granted July 30, 1929."

Copyright © 2002-2024 - DATAMP