US Patent: 5,738,483 - Lift and Invert Mechanism


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US Patent: 5,738,483

Lift and Invert Mechanism

Patentee:

Paul D. Terpstra (exact or similar names) - Janesville, Rock County, WI

USPTO Classifications:

414/758, 414/779, 414/782

Tool Categories:

metalworking machines : metalworking machine mechanisms : workpiece changers and storage mechanisms

Assignees:

Giddings & Lewis, Inc. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Sep. 11, 1996
Granted:	Apr. 14, 1998

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.

Description:

Abstract:

A mechanism for lifting from an operating position, inverting, and returning to the operating position a workpiece. The mechanism includes two drive devices, a linear drive which provides a continuous lifting force to a vertically movable member, and rotary drive which is energized to lift, invert, and lower a workpiece. The vertically movable member carries a rotational support member, which includes a rotatable shaft from which is supported the workpiece. The vertically movable member is raised, rotated and lowered by the rotary drive through a pair of levers, a first one of which is connected to rotate with the rotatable shaft and the second one of which is connected to be rotated by the rotary drive. Rotation of the second lever is imparted to the first lever through a cam and cam follower arrangement, the cam being provided on one of the levers and the cam follower on the other lever.