Adjustable needle bar crank drive

Details Adjustable needle bar crank drive Adjustable needle bar crank drive

1981-03-16

1984-12-04

Schroeder, Werner H.

Sewing

Elements

Driving mechanisms

112 79A, D05C 1106, D05B 5514

Patent

active

044857527

ABSTRACT:
A device for driving at least one needle bar on embroidery or sewing machines from a main drive shaft by means of a crank drive. In order to create a simple construction of high efficiency, low noise and little wear, the axis of rotating of the crank mechanism is arranged parallel to the main drive shaft. The bearing for defining the axis of rotation of the crank mechanism is adjustable in height such that the magnitude of the stroke of the needle is unchanged.

REFERENCES:
patent: 2100844 (1937-11-01), Foster
patent: 2662495 (1953-12-01), Parry
patent: 2692569 (1954-10-01), Ketterer
patent: 3438347 (1969-04-01), Taketomi
patent: 3450081 (1969-06-01), Rabinow
patent: 3492959 (1970-02-01), Wenz et al.
patent: 3633523 (1972-01-01), Card
patent: 3748914 (1973-07-01), Parsons
patent: 4190006 (1980-02-01), Mellor
patent: 4254772 (1981-03-01), Minella et al.

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