US Patent: 3,599,279 - Clamping Mechanism


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US Patent: 3,599,279

Clamping Mechanism

Patentee:

David I. McDonald (exact or similar names) - Cincinnati, Hamilton County, OH

USPTO Classifications:

164/343, 29/281.4, 29/434, 425/444, 425/590, 425/593, 72/451

Tool Categories:

metalworking machines : metalworking machine mechanisms : coolant apparatus

Assignees:

Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Mar. 20, 1970
Granted:	Aug. 17, 1971

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Cincinnati Milling Machine Co.

Description:

Abstract:

A hydraulically actuated clamping mechanism for moving a movable member into and out-of-cooperative relationship with a stationary member. A pair of rigid link arms is pivotally interconnected at one end of each of the arms to form a toggle. The free end of one of the toggle arms is pivotally connected to a stationary portion while the free end of the other arm is pivotally connected to a movable member. The pivotally interconnected ends of the toggle arms define a knee-type joint which incorporates an integral hydraulic rotary actuator which upon the application of hydraulic pressure, causes relative motion between the arms and thereby moves the movable member into and out of cooperative relationship with the stationary member.