Metal deforming – With means to drive tool – Including link-actuated tool support
Patent
1991-04-09
1992-02-11
Jones, David
Metal deforming
With means to drive tool
Including link-actuated tool support
72312, 2924358, 100272, B21J 918
Patent
active
050866389
ABSTRACT:
A drive mechanism for a hemming apparatus includes a pneumatic cylinder pivotally mounted to a frame which is suspended from a bed on which the workpiece can be positioned. The reciprocating shaft of the pneumatic cylinder is pivotally connected to the knee of a toggle joint. One end of the toggle joint is pivotally connected to the frame, and the other end of the toggle joint is pivotally connected to a lever. The fulcrum of the lever is pivoted on the frame, and the other end of the lever is connected to a draw rod. The draw rod is adapted to pull a movable member into operative engagement with the workpiece in one or two stages to complete the hem.
REFERENCES:
patent: 3092057 (1963-06-01), Warshilek
patent: 3147726 (1964-09-01), Tribe
patent: 3191414 (1965-06-01), Kollar et al.
patent: 3276409 (1966-10-01), St. Denis
patent: 3598073 (1971-08-01), St. Denis
patent: 4706489 (1987-11-01), Dacey, Jr.
patent: 4901555 (1990-02-01), Shimoichi
Brochure Entitled, "Instructions for Adjusting Hemming Machines" from E. R. St. Denis & Sons Limited, of Oldcastle, Ontario, Canada.
Sales Brochure from E. R. St. Denis & Sons Limited, of Oldcastle, Ontario, Canada, Entitled "Quality, Efficient Hemming Machines."
Jones David
Link Special Machinery, Inc.
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