US Patent: 3,757,641 - Control system for synchronizing movement of driven machine members


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US Patent: 3,757,641

Control system for synchronizing movement of driven machine members

Patentee:

John R. Goff (exact or similar names) - Alsip, IL

USPTO Classifications:

60/328, 60/420, 60/426, 91/171

Tool Categories:

metalworking machines : sheet metal : sheet metal brakes

Assignees:

Dreis & Krump Mfg. Co. - Chicago, IL

Manufacturer:

Dreis & Krump Mfg. Co. - Chicago, IL

Witnesses:

Unknown

Patent Dates:
Applied:	Dec. 15, 1971
Granted:	Sep. 11, 1973

Patent Pictures:

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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Dreis & Krump Mfg. Co.

Description:

"A control system for synchronizing movement of two hydraulically actuated, individually driven and leveled machine members. Preferably, the control unit is used with a pair of hydraulically operated press brakes or other like machines having reciprocable rams which are advanced and retracted by hydraulic fluid under pressure..."