Textiles: weaving – Special-type looms – Multiple-shed
Patent
1977-04-11
1978-06-20
Jaudon, Henry S.
Textiles: weaving
Special-type looms
Multiple-shed
139140, 139141, D03D 3500
Patent
active
040956199
ABSTRACT:
A machine for inserting cross yarns through an array of longitudinal yarns so as to produce a three-dimensional weave includes yokes positioned adjacent to the array of longitudinal yarns and two rotatable shafts mounted on each yoke along opposite sides of the array with the shafts extended generally perpendicular to the direction of the longitudinal yarns. The shafts of each yoke at their ends have latching mechanisms which are capable of individually engaging and releasing a transfer arm having sufficient length to span the space between shafts. The shafts of each yoke when rotated are capable of moving the transfer arm between end positions wherein the arm is located entirely to the side of the array and a traversing position wherein the arm extends through the array and is engaged with the two shafts. Thus, by rotating the shafts and operating the latching mechanisms it is possible to pass the transfer arm completely through the array from one end position to the other. The transfer arm carries a spool of weaving yarn which pays out from the free end of a yarn laying arm that is pivotally connected to the transfer arm intermediate its ends. As the transfer arm moves from one end position to the traversing position, the free end of the laying arm swings from one end position to the other and lays the weaving yarn through the array of longitudinal yarns to form a cross yarn. The transfer arm is used to pack the most recently laid cross yarn against previously inserted cross yarns by moving the yoke in the direction of the longitudinal yarns with the transfer arm in its traversing position. Means exist for moving the yoke perpendicular to the longitudinal yarns so that another cross yarn may be passed through a different portion of the array of longitudinal yarns.
REFERENCES:
patent: 708252 (1902-09-01), Barbier
patent: 3391714 (1968-07-01), Quintana
patent: 3818951 (1974-06-01), Greenwood
patent: 3834424 (1974-09-01), Fukuta
patent: 4019540 (1977-04-01), Holman et al.
patent: 4041988 (1977-08-01), Benzakein
Jaudon Henry S.
McDonnell Douglas Corporation
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