Sewing – Special machines – Embroidering
Patent
1996-11-08
1998-08-18
Lewis, Paul C.
Sewing
Special machines
Embroidering
D05C 1500
Patent
active
057945519
ABSTRACT:
A tangential drive needle bar shifter for tufting machines. The tangential drive needle bar shifter includes a computer system for creating and storing selected carpet patterns and for controlling the operation of at least one motor which drives the needle bar. The motor includes an output shaft which rotates through a selected degree of rotation in a selected direction. At least one belt is driven by the rotation of the shaft to create lateral displacement of an engagement device is secured thereto. Displacement of the engagement device ultimately creates a shift of the needle bar. As the motor is actuated, the needle bar is shifted a distance proportional to the degree of rotation of the output shaft. A position locking mechanism, or indexer, is provided for preventing the needle bar from shifting farther then required and thus preventing the needles from colliding with the corresponding hooks.
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Berger M. Steven
Morrison Gerald
Lewis Paul C.
Modern Techniques, Inc.
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