Controllably driven seamer

Details Controllably driven seamer Controllably driven seamer

1979-07-23

1981-07-21

McQuade, John

113 58, B21D 3902

Patent

active

042792118

ABSTRACT:
A seamer for completing two preformed abutting sheets has a wheeled body for straddling by rolling over the sheets. Sets of die rollers and opposed backing rollers longitudinally aligned along the body are driven by a drive unit after being pivotably positioned in operative opposed relationship. A control mechanism including sensors extending from the body seeks the presence of the preformed sheets or an obstruction to control the operation of the drive unit.

REFERENCES:
patent: 2160336 (1939-05-01), Maxfield
patent: 3487799 (1970-01-01), Gronlund
patent: 3662699 (1972-05-01), Horn et al.
patent: 3771482 (1973-11-01), Thompson
patent: 3773005 (1973-11-01), Day et al.
patent: 3797430 (1974-03-01), Boudreau

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