US2785703A - Selvage shuttle - Google Patents

Description

Mach 19,1957 w. YJROBB 2,785,703

SELVAGEI SHUTTLE Filed July 12. 1954 INVENTOR WALTER Y. R088 (2% Tfi/w mswmnammvm u: m v

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ATTORNEY SELVAGE SHUTTLE Walter Y. Robb, Whitinsville, Mass, assignor to Crampten 64 Knowles Loom Works, Worcester, Mass, a corporation of Massachusetts Application July 12, 1954, Serial No. 442,815

7 Claims. (Cl. 139-497) This invention relates to improvements in selvage shuttles such as are used for instance in Axminster looms and it is the general object of the invention to provide an improved shuttle having an increased weft carrying capacity and an improved guide means for the thread.

Axminster looms utilize a weft laying needle to intro duce a double pick into the warp shed and a selvage shuttle which passes a selvage thread through the double pick when the needle is fully inserted into the shed. Heretofore these selvage shuttles have been made to receive a weft quill mounted for rotation on the shuttle and the thread is passed from the quill directly to a thread delivery eye of the shuttle. A shuttle of this general type is shown in my prior Patent No. 2,354,615.

It is an important object of the present invention to eliminate the quill and make the shuttle in such manner that it can carry a weft cop which will carry considerably more weft than can be accommodated by a quill in the same sized shuttle.

It is a further object of the invention to provide a selvage shuttle having guide means at one end thereof for a thread delivered by the cop, the guide means being spaced from the adjacent end of the shuttle so that the thread can pass around the guide means without being exposed at the end of the shuttle. By this construction the actuator for moving the shuttle along its race can engage said end of the shuttle without danger of injuring the selvage weft.

It is a further object of the invention to provide a selvage shuttle with a slot cut across one end thereof to receive the selvage thread and fasten to the shuttle guide means which extend across the slot an appreciable distance from the end of the shuttle.

It is a further object of the invention to dispose the slot obliquely in the shuttle so that the distance measured along the slot from the guide means to the end of the shuttle will be greater than the distance from the guide means measured along the length of the shuttle to the end of the latter. The reason for this construction is to permit a greater amount of slackness on the part of the weft without danger of the latter being engaged by the shuttle actuator than would be the case if the slot were cut in a direction parallel to the shuttle axis.

In order that the weft may be correctly guided in the shuttle it is a further object of the invention to have the guide means so constructed that the part of it which is first engaged by the thread is more or less in line with the central axis of the shuttle so that the thread when led from the interior of the cop can travel in a direction which is substantially axial of the shuttle. The guide means has another surface over which the selvage thread travels and this surface is adjacent to one side of the cavity in the shuttle in which the cop is located.

A still further object of the invention is to provide an improved tension means on the shuttle adjacent to the shuttle eye constructed with an open ended slot to receive the thread before the latter reaches the delivery eye and to construct this tension in such manner that it U States Patent F 2,785,703 Patented Mar. 19, 1957 weft as it travels toward the "ice will produce a bend in the eye.

In order that the invention may be clearly understood reference is made to the accompanying drawings which illustrate by way of example two embodiments of the invention and in which:

Fig. 1 is a plan view of part of an Axminster loom showing the preferred form of shuttle,

Fig. 2 is an enlarged plan view of the shuttle shown in Fig. 1 with the cop strap indicated in released position in dotted lines,

Fig. 3 is a plan view looking in the direction of arrow 3, Fig. 2, but with the strap in cop retaining position,

Fig. 4 is an end view looking in the direction of arrow 4, Fig. 2,

Fig. 5 is an enlarged vertical section on line 5--5, Fig. 3,

Fig. 6 is a vertical section on line 6-6, Fig. 5,

Fig. 7 is a section on line 77, Fig. 6,

Fig. 8 is an enlarged plan view of one side of the shuttie, the lower part as viewed in Fig. 3, showing the thread tension member,

Fig. 9 is an elevation of the tension member shown in Fig. 8, and

Fig. 10 is a view similar to Fig. 6, but showing a moditied form of the invention.

Referring to Fig. l, the weft laying needle 1 of an Axminster loom is indicated as being fully inserted through the Warp shed W and having introduced the filling or weft thread F into the shed. The weft is secured to the selvage of the fabric at the end of the loom opposite that indicated in Fig. l and after passing through the forward end of the needle extends back through the warp shed to a stationary weft package (not shown). The loom frame 2 is provided with a stand 3 which supports an arcuate shuttle race 4 along which the selvage shuttle S travels. A shuttle actuator 5 is rocked back and forth about the axis of a vertical shaft 6 by means of an operating arm 7 connected at 8 to a rod 9 which is reciprocated at given intervals during loom operation.

The matter thus far described except for the shuttle S is of usual construction and operates in the ordinary manner to pass selvage weft through the loop in the filling thread F suggested in Fig. 1.

In carrying the present invention into effect the preferred form of the invention is made as shown in Figs. 29 and has a body 10 provided with a weft cavity 11 in which is located a cop C of selvage weft thread designated at T. The cop is held in position by a strap 12 one end of which is pivoted to the shuttle at 13 and the of weft laid by the needle It.

The end wall 17 is provided with a thread slot 20 which is oblique with respect to the length of the shuttle as indicated in Fig. 2. This slot extends from the outer. end of the shuttle through the end wall sufliciently far to communicate with the cavity 11 as will beunderstood rorn Fig. 6. e

In the preferred form of the invention two guide pins 21 and 22 are driven into holes 23 drilled intothe.

end 17 of the shuttle so that they extend across the slot 20 as shown for instance in Fig. 6. The pin 21 has a surface 25 which is more or less aligned with the axis of the shuttle while the pin 22 has a surface 26 which is near the wall 15.

The shuttle wall 15 is provided with a friction tension comprising a plate or member 30 shown for instance in Fig. 9. This plate is held ,to the shuttle by two screws 3; are an wh s is-rest is t reads to move into. engagement with or at least toward the ,Wjlgll 15. The plate 513 is h s a upwar open ng mou h I :ressive a T sh t e wa ,115 i de wi a w ed 9... n eye 35 close to the free end 32 ofthe plate ;3,() and he month 235} opens away from the delivegsy eye'to retain the thread between the teas ng Plats Wa 1-51, ee sand in threadin t e hstt s the thaws I after. le in t e interior of the cop C will be passed through the part of the 2. sho n n t e low 1 of st around s f ce 25 o ui e r s 2- nd aroun pa t .2 d he surfaceZfi he e f and t emhe led al n t sidewall and pass through the slot 33 and out of the d y ey 3 As is appa n n i t t r a will traverse a path which is'spaced an appreciable distance from the end of the shuttle or the wall 17 and will be out of the path of a depending lug 36 on the actuator 5 which normally engi fis the wall 17 to move the shuttle S to the left as viewed in Fig. l; The shuttle is provided with a notch 37 which receives a second depending lug 33 on the actuator to return the shuttle in the right hand direction as the direction of oscillation of the actuator 5 is reversed. 7

- It will be seen for instance in Fig. 6 that the distance from the post 21 up along that part of the slot 20 to the left of the post is longer than the distance from the post to the adjacent end of the shuttle and this relation permits a larger amount of slack in the weft to accumulate in slot 20 without engagement with the lug 36 than would be the case if the slot 20 led horizontally to the left from the post 21 as viewed in Fig. 6, It will be seen from Fig. 8 that the tension member is so formed that the thread T passes through the slot 33 a bend 39 is produced in it to create frictional resistance to the passage of the-thread. Furthermore, the free end 332 of the tension'member presses the thread against the adjacent side wall 15 of the shuttle. V

In the modified form of the invention shown in Fig. 10 the guide posts 21 and 22 of the preferred form are replaced by posts 49 only one of which is shown in Fig. 10. These posts are in holes 41 with which they have a driving fit and the posts are somewhat shorter than the length of the holes so that if wear should develop on the parts of the posts exposed to contact with the thread the pins 40 can be driven down into the holes 41 to expose fresh surfaces for engagement with the thread.

From the foregoing it will be seen that the invention sets forth a simple form of selvage shuttle constructed to carry a cop of selvage thread and provided with guide means, such as the posts 21 and 22 'or 40, extending across a slot 20 through which the weft is threaded. The

guide means are located a sufficient distance from the outer end of the wall 17 which is engaged by the lug 36 to prevent the latter from engaging and damaging/the thread. 'Also, the slot is oblique with respect to the shuttle and cut in such a direction as to have that part thereof extending from the guide means to the outer part of the wall longer than would be the case if the slot were more or less in alignment with the axis of the.

shuttle or at least parallel to it, this arrangement permitting a greater amount of slackness to develop in the a a e th ead Without men of e latte by he lu 36 than would otherwise be the case. Furthermore, the

tension member '30 is provided with a slot 33 which opens upwardly through the mouth 34'to receive the, thread and a bend is produced in the latter dueto the shape of the tension member. In the modified form the posts 40 after developing wear in the parts thereof exposed in the slot 0 t n e dr n al ae he ho es to present. tr

unworn surfaces for engagement withrthe selvage thread.

Having now particularly described and ascertained the provided with a vslot Q3 which 4 nature of the invention and in what manner the same to be performed, what is claimed is:

1. In a selvage thread shuttle for interlacing the weft of a loom with a selvage thread supplied by a cop in the shuttle, a shuttle body having top and bottom lengthwise walls formed with a cavity for the cop between said walls and having an end wall connecting said top and bottom walls and a thread delivery eyeopening through one of said lengthwise wall into said cavity at a point along the length of the shuttle spaced from said end walls, said wall having a slot therein communicating with the cavity and extending transverse of the top and bottom walls of the shuttle, thread guide means secured to the versely of said lengthwise walls around said guide means and then leading away from the latter out of the slot and within the shuttle to said tension and delivery eye.

2.. In a selvage thread shuttle for an Axminster loom ha in an a tua to m e the shuttle al ng a ra s d shuttle being formed with a cavity to receive a selvage th ead can nd vi g a de ry ve mmuni at with the cavity, a wall at one end of the shuttle extendns cross s i i y fo e g gem nt wi h s actuato a slot extending through said wall from the outer end of the shuttle and openinginto said cavity, and thread guide means extending across said'slot in spaced relation from said end ,of the shuttle comprising pins held frictionally in said end wall and movable transversely-of said slot to expose different parts thereof in said slot for engagement with the selvage thread, the thread from the cop entering. said slot and extending around said guide means to trayersea path spaced from said end of the shuttle and then out of said slot along the interior of the shuttle to the delivery eye in the shuttle.

3. In a selvage thread shuttle for an Axminster loom having an actuator to move the shuttle along a race, said. shuttle being formed with a cavity to receive a selvage thread cop and having a delivery eye communicating with the cavity, a wall at one end of the shuttle extending across said cavity for engagement with said actuator, a slot extending through said wall from the outer end of the shuttle and opening into said cavity, and thread guide means. extending across said slot including a thread engaging surface substantially midway of the cavity and another thread engaging surface adjacent to one side of' the cavity, said surfaces being in spaced relation from said slot and extending around said guide means to traverse a path spaced from said end of the shuttle and then out of said slot along the interior of the shuttle to the delivery eye in the shuttle. V

4. In a salvage thread shuttle for an Axrninster loom having an actuator to move the shuttle along a race, said 7 shuttle being formed with a cavity to receive a selvage thread cop and having a delivery eye communicating with the cavity, a' wall at one end of the shuttle extending across said cavity for engagement with said actuator, a

slot extending through said wall from the outer end of the shuttle and opening into said cavity, and thread guide means extending across said slot comprising a pair of posts spaced transversely of the shuttle secured in said end wall, said posts being in spaced relation from said end of the shuttle, the thread from the cop entering said slot and extending around said guide means to traverse a'path spaced from said end of the shuttle and then out of said slot along the interior of the shuttle to the delivery eye of the shuttle. I V

5.11;; a selvage thread shuttle for an Axminster loom having an actuator to move the shuttle along a race, said shuttle being formed with a cavity to receive a selvage thread cop and having a delivery eye communicating with the cavity, a wall at one end of the shuttle extending across said cavity for engagement with said actuator, a slot extending through said wall from the outer end of the shuttle and opening into said cavity, and thread guide means extending across said slot in spaced relation from said end of the shuttle, that part of said slot between the guide means and the end of the shuttle being oblique with respect to the shuttle in such a direction that the length of said part of the slot is greater than the distance between said guide means and said end of the shuttle, the thread from the cop entering said slot and extending along said oblique part of the slot and around said guide means to traverse a path spaced from said end of the shuttle and then out of said slot along the interior of the shuttle to the delivery eye in the shuttle.

6. In a selvage thread shuttle for an Axminster loom having an actuator to move the shuttle along a race, said shuttle being formed with a cavity to receive a selvage thread cop and having a delivery eye communicating with the cavity, a wall at one end of the shuttle extending across said cavity for engagement with said actuator, a slot extending through said wall from the outer end of the shuttle and opening into said cavity,

thread guide means extending across said slot in spaced relation from said end of the shuttle, and a friction tension secured to the shuttle in said cavity adjacent to the delivery eye, said friction tension having an open slot provided with a mouth opening away from the delivery eye, the thread from the cop entering the slot in said end of the shuttle and extending around said guide means to traverse a path spaced from said end of the shuttle and then out of said slot in the end of the shuttle along the interior of the shuttle and through said mouth and open slot in the friction tension and between the tension and shuttle to the delivery eye.

7. The shuttle set forth in claim 6 wherein said friction tension is formed on opposite sides of said open slot therein in such a manner as to produce a bend in the thread passing through the open slot in the tension.

References Cited in the file of this patent UNITED STATES PATENTS 1,852,081 Holmes Apr. 5, 1932 2,275,486 Purves Mar. 10, 1942 2,354,615 Robb July 25, 1944 2,604,125 Pospiszel July 22, 1952

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