Sewing – Special machines – Embroidering
Patent
1994-09-27
1996-10-08
Lewis, Paul C.
Sewing
Special machines
Embroidering
112 8042, D05C 1514
Patent
active
055620566
ABSTRACT:
A tufting machine has a bedrail which is raised and lowered by a motor controlled by a computer. The computer also controls the yarn feed motor and the backing material motor. A sensor detects the height of the bedrail and provides a feedback to the computer. In a process of raising the bedrail alternately a prescribed excess of yarns are fed to the needles as the machine is operated and then the bedrail is raised by an increment of the total amount by which the bedrail is raised. Brakes automatically operate to arrest movement of the bedrail when its motor is not operating.
REFERENCES:
patent: 3332379 (1967-07-01), Cobble, Sr. et al.
patent: 3881432 (1975-05-01), Dodd et al.
patent: 4867080 (1989-09-01), Taylor
IEEE Standard Dictionary of Electrical and Electronics Terms, pp. 373 and 374, May. 1978.
Card-Monroe Corp.
Lewis Paul C.
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