Textiles: weaving – Weft manipulation – Weaving with stationary weft supply
Patent
1975-04-29
1977-06-28
Kee Chi, James
Textiles: weaving
Weft manipulation
Weaving with stationary weft supply
139302, 139453, D03D 4700, D03D 4738, D03D 4970
Patent
active
040319253
ABSTRACT:
Weft-cutting apparatus for a shuttleless loom of the type having a continuous weft supply and in which a selected weft thread coming from a fixed bobbin mounted at a point spaced from the fabric prepared on the loom remains attached to the edge of that fabric during the movement of a picking needle inside the shed and until after it has been beaten into the fabric, is constructed of an upper L-shaped lever and a lower L-shaped lever, fulcrumed at their midpoint on a common pin to provide a gap between them which is located in the path of the weft thread. Each lever supports a transverse cutting blade at one end and, at its other end, a sliding roller which rides on an associated control cam. Springs attached to the levers force the sliding rollers against their associated control cams which are keyed to a common shaft that is rotated with the drive shaft of the loom, and are shaped so that the levers are pivoted and the blades are brought together to sever the weft thread during one phase of the revolution of the shaft and are separated from each other during another phase of the revolution of that shaft.
REFERENCES:
patent: 3380482 (1968-04-01), Scherillo
patent: 3487436 (1969-12-01), Svaty et al.
patent: 3530902 (1970-09-01), Stingl
patent: 3621885 (1971-11-01), Egloff et al.
patent: 3814140 (1974-06-01), Serturini
patent: 3951177 (1976-04-01), Santucci
Chi James Kee
Nuovo Pignone S.p.A.
Watson Ralph M.
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