US1741641A - Narrow-ware loom - Google Patents

Description

Dec. 31, 1929. T. MARTIN NARROW WARE L00! Filed Jan- 15, 1929 lllll ll AfTOR/VEY Patented Dec. 31 1929 UNITED STATES 'IRAUGO'IT MARTIN, OF PATERSON, NEW JERSEY NARROW-WARE LOOM Application filed January 15, 1929.

This invention relates to narrow-ware looms having more than one bank of shuttles so that the color or character of the fabric is changeable upon changing from the shuttle bank at any time in action to another, and it relates particularly to looms of this class in which, given any means for shifting the banks of shuttles so as to bring one or the other into position for action as the pattern may require, each shifting of the rack for the bank of shuttles in such position is obtained by one of two picking elements continuously moved simultaneously toward each other and then apart, as in the patent to Emery, No. 1,057,183.

The principal object of this invention is to provide an improved means for eifecting the lnentioned motion of said picking elements whereby the action will be attained with less vibration and noise, less load will be imposed on the batten and less power will be required to drive the loom, wear and tear can be more easily and completely taken up, and the means as a whole will be simpler and less expensive to produce and adapted to be applied to any particular loom without special designing or fitting to suit the same.

In these looms the picking finger of each picking element in its outward movement encounters a yielding stop which moves it into position for operative engagement with a picker plate, the latter being in effect a forward projection of each rack. A further object is to provide an improved form of such yielding stop.

In the drawings,

Fig. 1 is a front elevation of one end of a narrow-ware loom of the class indicated equipped with the present invention;

Fig. 2 is a side elevation, with certain parts 7 in section on line 2-2, Fig. 1;

Fig. 8 is a fragmentary plan embodying certain parts of the improved loom; and

Fig. dis a front elevation showing a modification.

The batten 1 is carried by bracket 2 sup-.

Serial No. 332,602.

movable and suitably guided by the batten is the auxiliary batten 9 having (here three) shuttle races 10 interrupted by the weaving spaces 11 and in which move the shuttles 12 which, through pinions 13, are driven back and forth across the spaces 11 by the racks 14 reciprocated as hereinafter stated and sliding in the upper and lower races of the auxiliary batten. The raising and lowering of the latter to bring one or the other bank of shuttles into the weaving plane may be controlled from any pattern means through a chain 15 connected to a bell-crank lever 16 fulcrumed in the batten 1 and pivotally connected with the auxiliary batten. Each rack 14 has an arm 14* (Fig. 2) which is equipped with a picker plate 17 offset forwardly of the rack and preferably supported on the arm by brackets 18 which are guided on one of three horizontal rods 19 in turn supported in rigid relation to the auxiliary batten by brackets 20 on the latter. On a guideway formed by two horizontal rods 21 and here carried by a bracket 22 upstanding from the batten 1 are two picker slides 23 having the pickers 24 pivoted thereon to project with their notched ends toward each other, each being normally held against the back of the slide 23 by a spring 25 but shiftable pivotally to bring its notched end into that position where it coincides with the vertical plane common to all three picker plates 17. Each picker plate is of less length that the distance between the two pickers when fully separated. I

So much is the known construction. And, given means to continuously move simultaneously toward each other and then apart the two picker elements, each composing a slide and a picker, and also stops against which they impinge and hence undergo the mentioned pivotal shifting each time they approach their limits of maximum separation and which are yielding, the operation of what has been so far described will be as heretofore, to wit: In Fig. 3 one of the picker plates has been brought, by the vertical shifting of the auxiliary batten, to the position for shifting thereof and hence of the corresponding rack in one directionhere to the left, it

being now at its right-hand limit. The picking elements 23-24 have been moving apart and the right-hand picking element at the end of this movement has encountered the mentioned yielding stop and, on passing clear of the plate, been shifted to bring its notched end opposite the end of the plate, being held by the stop in its new position until in the ensuing movement of the picking elements toward each other said plate will be caught in the picker notch, so that as said elements complete their movement together the shifting of the picker plate to the left will be effected. On any movement of said elements apart and then together a picker plate will be first caught and then moved in one direction in this way. Any one plate and hence rack may thus be reciprocated for any number of picks of the loom and upon any pick the described action of the picking elements may be transferred to another plate and corresponding rack on appropriate shifting vertically of the auxiliary batten.

According to this invention the mechanism to reciprocate the picking elements comprises separate means for shifting said elements, one of which is active to shift them simultaneously together and the other to shift them simutaneously apart. Said elements may obtain these movements from a common actuator. Thus in Figs. 1 and 2 on the lower shaft 26 is a double crank 27 having at diametrically opposite points the wrist pins 27 (which may be adjustable in slots therein as shown in Fig. 2) to which are connected the flexible pulling connections 28 and 29, which may be chains, cords or the like extending under and around sheaves 30. Each of these pulling connections is forked. The extremities of the connection 28 extends up between and respectively around pulleys 31 and then around pulleys 31 on the bracket 22 and then toward each other and are connected to pins 23 on the slides 23. The extremities of the connection 29 extend up between and around pulleys 32 on the bracket 22 and then from each other and are connected to pins 23 on the slides 23. hen shaft 26 is rotating it will be obvious that the connections 28 and 29 will be caused to shift the picking elements simultaneously together and then simultaneously apart, alternately.

As shown in the modified form Fig. 4, a spring 33 may be utilized in place of one of the pulling connections; and this serves to indicate that my invention is not limited to the specific construction heretofore described but contemplates any mechanism for reciproeating the picking elements which distinguishes from the prior art in that it comprises separate means for shifting such elements, one of which is active to shift them simultaneously together and the other to shift them simultaneously apart.

Each yielding stop is afforded by a bolt 33 slidable lengthwise of the rods 21 in a two-armed guide 34 thereon, the bolt having a pin 33 between the guide arms to limit its movement, and a spiral spring 34 connecting said guide with a lever 35 pivoted on an arm 36 projecting from bracket 22 acts through the lever to hold the bolt normally pressed inwardly. Heretofore the spring was coiled around the bolt and completely housed by a casing for the bolt, so that if it broke or required replacement the spring could not be changed easilyan advantage of my present construction.

Having thus fully described my invention, what I claim is: p

1. A shuttle motion for looms comprising a shuttle rack, reciprocatory picking elements simultaneously shiftable' together and then apart and alternately engageable with and adapted to move the rack first in one and then in the opposite direction, and mechanism to reciprocate said elements comprising separate means for shifting said elements one of which is active to shift them simultaneously together and the other to shift them simultaneously apart.

2. A shuttle motion for looms comprising a shuttle rack, reciprocatory picking elements simultaneously shiftable together and then apart and alternately engageable with and adapted to move the rack first in one and then in the opposite direction, and mechanism to reciprocate said elements comprising divided flexible pulling connections having the extremities of one extending from points between said elements to and connected to them and the extremities of the other connection extending from points separated by said elements to and connected to them and means to guide the several extremities.

3. A shuttle motion for looms comprising a shuttle rack, reciprocatory picking elements simultaneously shiftable together and then apart and alternately engageable with and adapted to move the rack first in one and then in the opposite direction, divided flexible pulling connections having the extremities of one extending from points between said elements to and connected to them and the extremities of the other connection extending from points separated by said ele ments to and connected to them, means to guide the several extremities and means to exert pulls alternately on the two connections including a rotating member having said connections connected therewith at eccentric points thereof substantially diametrically opposite each other.

In testimony whereof I affix my signature.

TRAUGOTT MARTIN.

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