US2229011A - Loom with stationary weft supply - Google Patents

Description

Jan.'l4, 1941. c. cLuf'soM LOQM WITH STATIONARY WEFT SUPPLY Filed Nov; 18, 1938 5 Sheets-sheaf. 1

Inventor,

Attorney kECEl Jan. 14, 1941.

C. CLUTSOM LOOM WITH STATIONARY WEFT SUPPLY Fi led Nov. 1a. 1958 's Shuts-Sheet? In 0212 to? A itorney c. CLUTSOM 2,229,011

LOOK WITH STATIONARY WEFT SUPPLY Filed NOV. 18, 1938 Jan. 14-, 1941.

'5 Sheets-Sheet 3 .b a a Attorney 7 atented Jan. 14, 1941 STATES PATENT OFFICE Charles Clutsom, St.

Zouch,

Michaela, Ashby -de-la- England Application November 18, 1938, Serial No. 241,278

1 In Great Britain December 3, 1937 g 8 Claims.

This invention relates to looms with stationary weft supplies, i. e. shuttleless looms with weft supplies which are stationary as regards insertion of the weft, for weaving smallware, for example elastic and inelastic or so-called rigid webs and like narrow pieces such as ribbons and braids in continuous length, as well as for weaving wider elastic fabrics, e. g. upwards of 12 inches or more in width, for manufacture subsequently into garments such as corsets, corselettes, belts, girdles and like foundation garmentaand rigid pieces for other purposes.

The present invention is applicable to looms which include a weft laying member or members consisting of a thread guide or guides adapted to operate to carry the weft to and fro through a shed or "sheds of warps, and a thread engaging element or elements adapted to operate in conjunction with the weft laying member or memhere to ensure laying of the thread to and fro through the shed or sheds or/and to form a selvedge or selvedges, such looms hereinafter being referred to as looms of the kind herein referred to.

application principally to looms of the form described in the specification of my prior Letters Patent No. 2,130,636.

The present invention comprises an improvement the object of which is to facilitate satisfactory functioning of the thread engaging element or elements.

The invention is advantageously applicable to a loom of the kind herein referred to wherein the embodiment of the inventlonas applied for use in conjunction with a pivoted weft laying member and a reciprocatory latch needle operating in a horizontal plane, the said needle being mounted for reciprocation alongside the path of the warps so as to engage the weft presented by the weft laying member operating from the opposite side of the path of the warps in order to knit a selvedge In this respect the invention is intended for thread engaging element or elements is or are from the weft. as described in the specification hereinbefore referred to.

In the drawings,

Figure 1 is a plan view of a unit or attachment incorporating the aforesaid pivoted weft laying member, the reciprocatory latch needle and means constructed in accordance with the present inr vention for the purpose hereinbefore alluded to.

Figure 2 is a side elevational view of the same.

Figure 3 is an end view as viewed in the direction of the arrow A in Figure 1.

Figures 4 and 5 are detail side and end elevational views respectively of so much of the said unit or attachment as is necessary to illustrate the manner in which the means provided by the invention function to hold back the inserted weft while the latch needle is advanced toengage theweft thread.

Figures 6 and 7 are two views similar to Figures 4 and 5 showing the relative position of the parts when the needle has completed its advancing movement.

Figure 8 is an enlarged detail plan view illustrative of the manner in which a. previously formed portion of the selvedge is held back while the needle advances.

Like parts are designated by similar characters throughout the drawings.

The particular form of unit or attachment shown in Figures 1-3 is similar to that described in the specification aforesaid and, as will be seen. the weft laying member I and the knitting needle 2 are mounted for movement upon a common bracket or support 3 adapted to be applied to and removed from a loom. In Figure 2 the unit or attachment is indicated as being secured to the top of a longitudinal frame member 4 of a loom. The weft laying member is in the form of a thread guide which is carried by, or formed integrally with. a substantially radial arm 5 pivotally mounted at 6. on the bracket or support so as to enable it to be oscillated in a horizontal plane.

reference The necessary movements may conveniently be imparted to the member I by a cam actuated slide bar furnished with pins or the equivalent between which the rear end of the arm 5 is located, all as fully described in my prior specification aforesaid. The latch needle 2 is attached to a carrier bar I slidably mounted for reciprocation on the bracket or support 3 and located at the side of the latter remote from the pivot 6 between two plates 8 and 9 which together constitutes guide for the bar. The said bar is provided with an operating stud H) by means of which it can be reciprocated, e. g. from a cam actuated rockshaft indicated in dot-and-dash lines at II and I2 in Figure 2. In the drawings the weft supplied to the weft laying member I isindicated at a and the said member and the needle 2 are located on opposite sides of the path of the warps b. The curved portion of the member I can therefore carry weft to and fro through a shed (Figures 2, 4 and 6) formed in the usual manner. The needle 2 is mounted for reciprocation alongside the path of the warps and at the completion of each advancing or forward movement thereof engages the weft presented to. it by the member I. A slotted guide I3 is conveniently provided for constraining the fabric d (Figure 1) as it is woven to maintain a definite path in the region of the fell e. For the purpose of the present description no further details of this particular unit or attachment are necessary and the manner in which the latter operates to produce a plain weave with a knitted selvedge f is fully described in my price specification.

In accordance with the present invention there is provided a member I I like a pin or small finger mounted for movement towards and from the fell e of the fabric d at right angles to the inserted weft, or substantially so, between the latch needle. 2 and the adjacent warp b (see Figure 1) the arrangement being such that the pin or finger moves towards the said fell to hold back the inserted picks g and h of weft while the needle 2 is advanced to engage the weft thread when next presented to it by the weft laying member I. The effect, as shown more clearly in Figure 8, is that a loop I of the selvedge already on the needle is held back on the needle stem 211 while the needle advances to engage the weft thread preparatory to forming the next loop of the selvedge, and so on as weaving proceeds. convenient to arrange the pin or finger I4 for operation from the needle carrier bar I so that the said pin or member operates in proper timed relation with the needle 2. In this connection the said pin or finger is conveniently mounted in or on one end of a two-armed lever I5 which is pivotally mounted alongside the needle carrier bar I so as to rock in a vertical plane and is slotted longitudinally as indicated at IS on the side of the pivot I1 remote from the pin or finger I4 for reception of the operating stud I0 aforesaid, the slot being straight for the major portion of its length and curved downwards at the outer end, i. e. the end remote from the pivot I'I, whereby when the needle bar is reciprocated the lever I5 is oscillated. Thatis to say, when the needle is advanced the stud III first moves along the curved part IBa of the slot I6 so that the lever I5 is depressed at this end thereby lifting the opposite end so that the pin or finger, I4 is brought up (from the position shown in Figures 2 and 3) to the fell e of the fabric in the manner represented in Figures 4 and 5, whereafter the stud moves along the straight part I6b of the slot thereby holding the pin or finger in this position until the needle has completed its advancing movement. It is convenient to mention here that towards the end of this advancing movement the bar I preferably makes contact with a cam I 8 whereby the needle is deflected as shown in Figures 6 and 7 to facilitate engagement thereof with the weft thread presented to it at this stage by the weft layin'g member I in the manner described in the hereinbefore mentioned prior specification. Upon reverse movement of the bar I to retract the needle 2, the stud I0 moves along the straight part I6a' For this reason it is of the slot and then along the downwardly curved part IBb thereby, towards the end of its movement, rocking the lever IS in the reverse manner to remove, i. e. lower, the pin or finger I4 from the fell e so as to enable the pair of weft picks last laid to be pulled up to the fell. The pin or finger is located in a part I9 bent or attached, e. g by screws 20, at right angles to the lever I5 so as to project laterally therefrom, and the pin or finger is also bent or cranked laterally in the manner shown in Figures 3, 5 and 7 so as to enable it to work between the path of the needle 2 and the adjacent warp thread b. In the specific example illustrated the pin or finger consists of a short piece of wire which is appropriately bent to shape and secured in the part I9 by means of a screw 2I, although a pin or finger of any other suitable character and fixed in position in any other convenient way may, if desired, be adopted. In the arrangement described, therefore, the pin or finger I4 engages the inserted weft between the loop I on the needle and the last mentioned warp thread (see more particularly Figure 1). If desired the arrangement may be such that the pin or finger operates with a pushing or pressing action upon the weft. Instead ofbeing actuated positively in each direction the lever I 5 may be moved in one I direction by the stud I0 working on a cam-shaped part on the lever, or by a cam suitably applied, and in the other direction by a spring. As a further alternative the said lever may be operated independently of the needle by cam, crank, eccentric or any other suitablemeans, and may be positively actuated in each direction or positively actuated in one direction and spring actuated in the other direction. Operation of the pin or finger independently of the needle might sometimes be advantageous in that it would readily permit of adjustments being made in the timing of the operation of the pin or finger in relation to the forward and reverse movements of the needle.

The pivot pin or stud I! for the lever I5 is conveniently mounted, either fixedly or adjustably, in the outer of the two guide plates 8 and 9 so that the lever is located on the outside of the needle 2. A collar 22 which is fixed upon the outer end of the pivot pin or stud H, e. g. by means of a screw 23, serves to prevent lateral displacement of the lever I5 although such displacement may, if desired, be prevented in any other suitable manner.

A brush for ensuring that the latch 24 of the needle is open at appropriate times is designated by the reference numeral 25 but has been broken away in Figure 1.

The arrangement specifically described is adapted for producing a fabric with a single weft and a single weft locking selvedge on the appropriate edge.

A pin or finger and lever arrangement of the character aforesaid may, of course, be provided in conjunction with each of two or more needles co-operating with the same weft laying member but on opposite sides of the path of the warps so that a. selvedge is formed at each edge of the fabric, and a similar arrangement or arrangements may be provided. in conjunction with one or more needles -op ing with a pair of weft laying members to produce double faced fabric with a locking selvedge or selvedges.

responding means constructed, arranged, and adaptedfor use according to the present inven- -ciprocation in said guide, said thread engagingwork between the path of the thread engaging element and the adjacent warp, a lever having at right angles thereto a part in which said member is provided, said lever being movably mounted alongside the carrier bar and slotted for reception of the aforesaid operating stud, the construction and arrangement being such that said member moves towards the fell to hold the inserted weft back whenever the thread engaging element is advanced to engage the weft thread presented to it by the weft laying member, for the purpose herein specified.

8. In a weaving loom with a stationary weft supply, in combination, a weft laying member consisting of a thread guide adapted to operate to carry the weft to and fro through a shed of warps, two guide plates from the outer of which projects a pivot, a thread engaging element attached to a carrier bar which is elidabiy mounted for reciprocation between said plates, said thread en ging element being adapted to operate in conjunction with the weft laying member to ensure laying of the weft to and fro through the shed and to form a seivedge at an edge of the fabric being woven, an operating stud on said carrier bar whereby the latter is operated, a member mounted for movement towards and from the fell of the fabric between the thread engaging element and the adjacent warp, a lever by which said member is carried, said lever being pivotally mounted upon the aforesaid pivot alongside the carrier bar and slotted for reception of the operating stud, the construction and arrangement being such that said member moves towards the fell to hold the inserted weft back whenever the thread engaging element is advanced to engage the weft thread presented to it by the weft laying member,

CHARLES CLUTSOM.

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