Patent Model - Automatic Tension for Sewing-Machines

Maker and role
George Dimond (b.1838, d.1913), Patentee
Wilbur Dial (b.1850, d.1903), Patentee
George Dimond (b.1838, d.1913), Assignor
Wilbur Dial (b.1850, d.1903), Assignor
Wheeler & Wilson Manufacturing Company (estab. 1853), Assignee
 Production date
Sep 23 1884
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Object detail

Media/Materials
Cast iron, steel, paint
Measurements
14 x 8 1/8 x 21" (35.6 x 20.6 x 53.3cm)
Description
"This invention relates to that class of tension mechanism which is adapted to automatically hold and release the needle-thread, allowing only a quantity thereof sufficient to form a stitch to be drawn from the tension device and spool by the take-up at each revolution of the main shaft of the machine. Means are herein provided to release the needle-thread from the tension device at the will of the operator, such means co-operating with the lever used to lift the presser-bar and foot, so that while the presser-foot is raised to remove from or place under it the work, the needle-thread may be freely drawn through the tension device and eye of the needle." (Patent Number 305,438)
Collection
Rothschild Patent Model Collection
Object number
2015.14.3527a,b
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