Patent GB-176348-A (GB)
Title: Improvements in or relating to yarn or thread positioning mechanism for textile machinery
IPC: D03D39/00
Filed: 1922-02-23
Abstract: 176,348. Mohawk Carpet Mills, Inc., (Assignees of Hathaway, E. F.). March 5, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Weft-inserters not carrying bob- 'bins &c., looms with.-Relates to yarn or thread positioning-mechanism for textile machines, especially to means for moving one of several wefts into such a position that it can be seized by the spring-controlled intergeared gripping-jaws of the weft-inserter when weaving a fabric for making chenille strips. The tubes &c. 7, Fig. 1, carrying the weft yarns are carried in split sockets 6 pivoted at 8 to supports 5 on an arc-shaped or other bracket &c. 3. The tubes normally extend upwardly, and are received against a backing or support 9, but at the required times one of them is moved down into operative position to present the weft therein to the weft-inserter, the tube moving underneath shoulders in intergeared spring-controlled jaw-members 10, Figs. 1 and 5, of a holder whereby the tube is retained in its operative position. The sockets 6 are connected by lever mechanism to respective spring-controlled spindles &c. 31, which are all moved to the right at times by one or more rock arms 47, all the tubes 7 being then carried to their raised and inoperative positions. Bars 40, Figs. 1, 4, and 5, controlled by a pattern drum or barrel 37 comprising a series of discs formed with recesses, are provided with respective abutments 42, which can be interposed between the spindles &c. 31 and fixed pins 43 and thereby prevent the movement of the corresponding spindles &c. 31 to the left, but, where an abutment is not interposed, the corresponding spindle &c. 31 is moved to the left by means of its spring 34, when permitted by the arms 47, and the corresponding tube is moved downwards into operative position. Periodically, all the bars 40 are moved away from the pattern barrel &c., so as to permit rotation thereof, by means of an arm 50 operated as shown from a rod 58. The pattern 'barrel &c. 37 is intermittently rotated by means of a ratchet 59 engaged by a pawl &c. 60 on a lever 61 pivoted at 62 to a lever 63, which is pivoted on the shaft 36 of the pattern barrel &c. The lever 63 is moved at intervals by means of a link &c. 66 operated from the main pattern mechanism. The engagement of the pawl &c. 60 and ratchet 59 may be controlled by a roll 72 on a lever 71, 69 connected to pattern-controlled mechanism. The roll acts on an arcuate flange 73 upon the lever 61 to disengage the pawl &c. 60, whilst a spring 74 acting on the lever 61 tends to move the pawl into engaging position. The ]ever 71 may be connected by a rod 75 to an arm 77, whereby the holding-jaws 10 may be positively opened to receive a tube &c. 7 when the pawl 60 engages with the ratchet 59 to turn the barrel &c. 37. One of the tubes 7 may be mounted in line with the path of the weft-inserter, the other tubes being bent or curved to bring their forward or delivery ends into alignment with the weft inserter when the tubes are in operative position. Coiled springs 91 may assist to hold the tubes against the support 9, and the tubes are provided with yarn-holding springs 88.