Textiles: weaving – Pattern mechanism – Cylinder motions
Patent
1981-08-11
1983-11-15
Kee Chi, James
Textiles: weaving
Pattern mechanism
Cylinder motions
139 1E, 139 68, 139331, D03C 124, D03C 122, D03C 334
Patent
active
044150075
ABSTRACT:
An apparatus for controlling a dobby in which reading needles read a punch card and each needle influences the movement of a respective heddle frame. Two outer disks having annular toothed portions arranged on the axial facing sides thereof which face one another are secured on the shaft of a punch card drive cylinder. The teeth of the toothed portions are angularly offset by one-half the tooth pitch. Between the two outer disks, and freely rotatably supported on the shaft is a central disk with annular toothed portions on the axially facing sides thereof which are also offset by one-half the tooth pitch. A movable guide member for the reading needles is secured on and driven reciprocally by the central disk. Upon indexing the pattern card for one pick, the toothed portion of one outer disk moves the central disk toward the second outer disk and effects engagement of the facing toothed portions on the central disk and the second outer disk. Through the movement of the central disk, the guide member and thus the reading needle are moved so that the needle reads the following pick from an adjacent row of control points on the card.
REFERENCES:
patent: 4067364 (1978-01-01), Tomio
Chi James Kee
Staeubli Ltd.
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