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US 4,240,368 AGranted
Motorized drive for a sewing machine including belt tensioning means
AssigneeThe Singer Company
InventorKenneth D. Adams
Life of this patent
Estimating the term…
Abstract
A module including a frame which supports a motor, reduction gearing and a belt driving pulley is mounted in a sewing machine for position adjusting movements in one direction effective to set tension in a shaft timing belt, and position adjusting movements in another direction effective to set tension in a hook shaft timing belt.
Claims10
In combination, a sewing machine frame;
- a module including a frame, a motor attached to the frame of the module, speed reducing means which is driven by the motor, a shaft supported by the frame of the module, and a belt driving pulley which is rotatably supported on said shaft and is driven by the speed reducing means;
- belts on the pulley extending in different directions for driving mechanisms of the sewing machine;
- and means mounting the module on the frame of the machine for pivotal movement effective to set tension in one belt and translational movement effective to set tension in the other belt.
Dependencies are inferred from the claim text.