US1079914A - Loom. - Google Patents

Description

s. s. JACKSON.

' LOOM.

APPLICATION FILED AUG. 28, 1909. 1 ,079,9 1 4.

. Patented N0v.25,1913.

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COLUMBIA PLANDGRAPH co,. WASHINGTON. D.' c.

S. S. JACKSON.

LOOM.

APPLIUATIQN FILED Amma. 1909.

1,079,914. l v Patented Nov.25,1913.

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COLUMBIA PLANOGRAPH co., WASHINGTON. D. c.

unirti) sTATns PATENT ornrcii.

sIMEoN sCHooN JACKSON, oF READVILLR, ivIAssAHsETTs, iss ,dNoit To Tril@ STAFFORD COMPANY, or READVILLE, MASSACHUSETTS, A CORPORATION or NEW' JERSEY.

T 0 all whom t may concern.'

Be it known that I, SIMEON SoHooN JACK- SON, a subject of Great Britain, residing at Readville, in the county of Norfolk, State of Massachusetts, have invented a certain new and useful Improvement in Looms, of which the following is a specification, reference being had therein to the accompanying drawings. l

Certain looms in use at the present time are equipped with devices which include a dog that is connected to a weft-fork slide so as to be actuated when such slide is moved in consequence of breakage or failure of the weft, and a transmitting member that is provided with a shoulder to be engaged by the dog and also with a lip which fixes the normal position of the dog and assists in controlling the action of the dog when the latter is called into play. The movement of the transmitting member produced by engagement of the dog with the said shoulder, and advance of the dog, is for the purpose of bringing about a change in the action o-f the loom, and has been utilized to bring about a replenishment of the working weft-supply of a loom, and the devices have been constructed and combined to effect pick-finding, that is to say, to cause the first pick of the fresh weft to be laid in a reopening of the proper shed to avoid a break in the weave of the web being produced. Sometimes when the weft-thread breaks it does so outside the shuttle so as to leave a trailing end which is not long enough to eX- tend in front of the weft-fork when the shuttle is at rest in the adjacent shuttle-box. Consequently, the weft-fork is not tilted when the lay neXt beats up. Sometimes the weft extending through a shed in the warps to the shuttle in the shuttle-box at the end of its flight is intact but is too slack to tilt the weft-fork. In either case the weft-hammer engages the tail of the weft-fork and acts in usual manner to advance the weft-fork slide and the dog so as to move the latter from its normal position relative to the lip, the dog thereupon assuming its secondary position, thus beginning the sequence of the pick-finding action. If, however, in the case first referred to the trailing end should catch among the warp-threads in the flight of the shuttle through the next shed, or through the suc- Specification of Letters Patent.

Application led August 28, 1909.

LOOM.

Patented Nov. 25, `1913. serial No. 515,046.

ceeding shed, and become woven in, as happens occasionally, the weft would thereafter act to tilt theiweft-fork in regular manner, as though the breakage'had not occurred. Then this occurs the operation of the devices is interrupted, and while the loom continues the weaving the dog remains in its secondary position. The result will be similar if in the other case referred to the weft laidby the succeeding pick to the weft-detecting side of the loom should tilt the weft fork. Hereto-fore when the operation has been thus interrupted it has been necessary to return the dog by hand to its normal starting position in order that when the next weft-failure occurs the devices may act correctly and when employed for pick-finding pirposes may operate to lind the proper s ed.

The invention has for its object to provide means for automatically replacing the dog in its normal starting position whenever it is given a different position and is left therein, as in consequence of an interruption of the regular working of the devices with which the dog is combined, after such working has been begun, or in case of the dog being accidentally disturbed from such position.

The invention consists, essentially,` in the combination with a transmitting member, a dog, and a lip and a shoulder with which the dog coacts, and a weft-detector under control of which the interaction of dog, lip, and shoulder occurs, of means acting to restore the dog and lip to normal starting relation in case a sequence of beats that has been begun is interrupted, or in case 0f accidental departure from such relation.

The mechanical devices employed in carrying the invention into effect may be varied in construction and arrangement in practice.

A convenient embodiment of the invention is shown in the accompanying drawings, in which latten- Figurel is a side elevation taken at one end of the breast-beam of a loom, namely at the driving side of the loom, showing certain elements of pick-finder devices with the said embodiment of the invention combined therewith. Fig. 2 is a plan view of the parts which are shown in Fig. 1. Fig. 3 is a View similar to Fig. 1, but showing the parts' arranged for finding. the pick in the case of the employment of a different number of harness-changes to the round than that for which the parts are arranged in Fig. 1. Fig. 4 is a front elevation of the dog and dog-carrier, Fig. 5 is a side elevation thereof, and Fig. 6 is a top View thereof. Fig. 7 is a side elevation of the guide-stand for the striker-pin, hereinafter described, and Fig. 8 is a rear elevation thereof.

1, Figs. 1, Z-and v3, is the side-frame at the driving-side of` a loom, and 2 is the breastbeam- 3 is a shipper-handle, 4 is a rockshaft on which the shipper-handle is iixed, and 5 a rod (only a portion thereof being shown) thro-ugh ywhich the shipper-handle controls the power-shipping and brake-devices (not shown). The shipper-handle is shown in the vposit-ion occupied by it while the power is applied and the loom is running.

At 11 is a tripping rockshaft through which the shipper-devices and weft-replenishing instrumentalities of the loom are tripped into action. For thus tripping the shipper-devices, the said tripping rockshaft has thereon a collar 13a which is made fast thereto by a clamp-screw 13b and formed with la projecting lug or shoulder 13, and the shipper-handle is formed with a projecting lug or shoulder 14 with which lug or shoulder 13 engages. By reason of such engagement, forward turning movement of the tripping rockshaft acts through the lugs or shoulders 13, 14, to operate the shipper-handle so as'to cause the driving-power of the loom to be unshipped, the brake applied, and the weaving action stopped to afford opportunity for conveniently effecting replenishment.

At 12, Figs. l and 3, is a portion of a iinger that is iixed upon the tripping rockshaft by means of its hub or sleeve 12a, Fig. 2, and a clamping screw 12b. This finger is operatively combined in practice with devices (not shown) for automatically replenishing the working weft-supply, so that when the tripping roclrshaft and finger are turned the said devices are called into action and thereby the automatic replenishment is brought about. The particular arrangement of parts that is shown in the drawings is more especially designed for employment in aV replenishing loom of the well-known type in which the movement of finger 19A operates to trip a so-called change-shaft into operation, at the same time that lug 13 trips the Shipper-handle to unship the driving-power from the weaving instrumentalities and apply the brake to thereby suspend the weaving action, the change-shaft during its rotation actuating the various replenishing instrumentalities to occasion a replenishment of the'worlring weft-supply during the suspension of the weaving action, and

iinally acting to restore the shipper-handle to its former position and thereby relieving the brake-action and shipping on the driving-power to resume weaving, the changeshaft itself coming to rest. The side of the loom represented in Figs. 1, 2, and 3, being that at which the shipper-handle 3 is located, is the driving side. The magazine (not shown) containing the reserve weftsupply (filled and threaded shuttles) is in practice located at the opposite side of the loom.

The drawings show the invention applied in connection with certain of the elements of the pick-finder devices of a two weftfork loom, such elements being those which are located at the driving side of the loom, although the invention is not necessarily restricted to employment in this particular connection, nor is it limited with respect to the employment of weft-forks as the weftdetectors.

Referring brieiy to the illustrated weftdetector and pick-finder devices,-15 is the weft-fork which detects for picks to the driving side of the loom, it being mounted pivotally upon the rear end of its carrying slide 1G, and the latter being supported and guided by the stand 17 fixed upon the breastbeam 2 adjacent to the said side.

18 is the actuator (weft-hammer or gooseneck) that cooperates with the said fork 15, the said actuator having the shoulder 1S*1 which, when the fork 15 is not tilted by weft or filling between its t-ines and the corresponding grid of the lay, when the lay beats up after the pick to the driving side, engages the tail 15n of the said fork and moves the slide 1G forward in its guidestand 17. The actuator 1S is moved at the required times to feel for the tail of the fork 15 by means of a cam (not shown) on the cam-shaft of the loom. The forward movement of the slide 16 is utilized for the actuation o-f the dog aforesaid, which is shown at 27. For the support of the dog and the transmission of movement thereto from the slide 16, an arln Q0, Fig. 2, is mounted loosely upon a supporting rod or shaft 21 extending across the loom in line with the tripping rockshaft 11. The rearwardly-extending upper end of the arm 2O is branched, the branches being separated transversely, and in holes made transversely through the two branches a pin 23 is mounted, the said pin being fixed in place by means of a clamping screw 24. The intermediate portion of the pin passes through the eye of the forwardly-projecting portion of an eye-bolt 25 having its threaded stem screwed into the front portion of the slide 16. The said eye-bolt constitutes a longitudinally-adjustable connection between the said slide and the pin and arm. A portion of the length of the pin 23 projects at the outer side of the arm 20, and an arm 26 is hung pivotally thereon, the said arm and the slide being thereby connected together so as to compel them to move forward and rearward in unison. The arm 26 extends forward from the pin, and carries the tripping dog 27. When the actuator (wefthammer or gooseneck) erigages the tail of the weft-fork 15 and advances the slide 16, the arm 26 and dog 27 are carried forward therewith. A contracting spiral spring 29, having its rear extremity engaged with a lateral ear 29a on the rear of guide-stand 17 and its forward extremity engaged with a screw 29b projecting downward from the hub-portion of the dog-carrying arm 26, aids gravity in causing the said arm and dog to tend to swing downward, and also acts with a tendency to draw the said arm 26 and the weft-fork-carrying slide 16 rearward and hold the arm 20 in contact with the front surface of the breast-beam. Through the action of the said spring the arm 26, dog 27, and slide 16 are moved rearward into their normal positions after having been advanced in the manner just described. The acting portion of the dog 27 extends transversely outward above the upper end of an arm 28 rising from the hub or sleeve 12a which is fixed, as aforesaid, upon the tripping rockshaft 11. The shoulder 28a which the dog 27 is designed to engage is formed upon the upper end of the arm 28. At the rear of the said shoulder is a pocket 28h. The said pocket is partly covered by the lip 28, which is `constituted by a strip of metal that is fastened to the top of the arm 28 at the rear of the pocket and projects forward over the latter. The clearance between the front end ofthe lip and the shoulder is suflicient topermit the dog 27 t-o pass in and out beneath the lip by relative rearward and forward movement, and the depth of the pocket at the' rear of the shoulder 28al is sufficient -to accommodate the dog.

As thus far referred to, the parts constitute a separate invention, and are not broadly claimed herein.

Figs. 1 and 2 show the parts combined and arranged as they are employed for pickiinding purposes .for three-harness weaving. The dog 27 occupies a position in contact .with the under side of the lip 28C, and elevated above shoulder 28a. This is its normal or starting position for three-harness work, and it is held in such position through the agency of a link 39 having its upper end connected by a pivot 39a to the downwardlyextending finger 26EL of arm 26 and its lower j portion slotted longitudinally at 39h, and a screw-stud 39C carried by an arm 37 fixed upon the cross-rod or shaft 21. The stem of the said screw-stud works in the slot 39", and l normally engages with the wall. at the upper 1 end of such slot so as to lift and support the link and arm 26, and keep the dog 27 pressed against the under side of the lip.'

The operation, in general, of the picknder devices when arranged and combined as in Figs. 1 and 2, is fully explained in United States Letters Patent No. 1,040,547, granted Oct. 8, 1912, on my co-pending application filed June 10, 1908, Serial No. 501,316. It is sufficient to state herein that should the weft fail on the pick of the shuttle from the magazine side of the loom to the driving side thereof, or should the weft laid lon such pick be excessively slack, so that the weft-fork 15 remains untilted when the lay beats up, the engagementof the actuator 18 with the tail of the said fork, and resulting advance of slide 16 and arm 26, will move dog 27 forward out from underlthe lip 28C. rlhen, as the actuator moves rearward, the slide and arm will acT company it, and the dog having been raised slightly through theaction of a spring (not shown) in connection with the devices (not shown) at the other side of the loom, the lifting force transmitted from such spring Ibeing sufficient to overcome the depressing force exerted by the spring 29, the rearward movement will place the dog above the lip 28C. It being assumed that no weft is laid 95 it having been relieved from the lifting effect of the spring at the other side of the loom, drops until dog 27 rests upon the forward portion of arm 28, and when the slide 16 next moves rearward the dog falls behind shoulder 28a. .In the next advance of the said slide, the dog 27 acts against the shoulder to move the arm 28 forward, rocking the tripping roekshaft 11 so as to trip the shipper-handle and also call the replenishing instrumentalities into action. If failure o-f the weft at a pick from the magazine-side of the loom to the driving-side should be due to breakage thereof outside the shuttle, leaving a trailing end which is not long enough to act to tilt the weft-fork 15 when the lay beats up with the shuttle in the shuttle-box at the latter side, so that the weft-fork devices act as described to produce the first advance of the dog and cause the latter to assume its secondary position, namely, on the top of the lip, and if in the flight of the shuttle through the next shed, from the driving-side of the loom to the magazineside, or in the return flight from the magazine-side to the driving-side through the succeeding shed, the trailing end should catch in the shed and become woven in, the weft would thereafter act in usual manner to tilt the weft-forks alternately. Thereby the operation of the pick-finding devices would be interrupted, and the regular working of the loom would be continued without suspension of the weaving action, or replenishment, the dog however remaining in its said secondary position. When this occurs, it is important that the dog should be restoredv to its normal starting position promptly, in order that the pick-finder devices may secure correct results when subsequently called into action again. rIhe same v situation would present itself in case the weft laid by the pick from the magazineside to the driving-side should be too slack to tilt thefork at the latter side, but should act to tilt the fork at the magazine-side on the return pick to the latter side from the driving-side.

Fig. 3 shows the pick-finder devices combined and arranged as they are employed for four-harness weaving. In this figure, link 39 and screw-stud 39C are omitted, inasmuch as the dog is notunder contro-l of the weft-fork at the magazine-side. The normal or starting position of t-he dog is upon the top-of the lip. When the pick-finding sequence is begun, so as to cause the dog to be carried forward from the lip and permit it to drop and pass rearward under the lip, and then such sequence is interrupted, as in either of the cases above referred to, leaving the dog in its secondary position beneath the lip, the same necessity for replacement of the dog in its normal starting position exists as in the case already described with reference to Figs. 1 and 2.

The means illustrated in the drawings for restoring the dog and lip to normal starting relation in case a sequence o-f beats that has been begun is interrupted, leaving the dog and lip in abnormal relation, comprises a reciprocating` member which by engagement with the dog when the latter has been allowed to remain in its secondary position returns it to the normal or starting position. In the illustrated embodiment of the invention this member is, for convenience, actuated by means of the weft-hammer or gooseneck 18, the arrangement and timing of the latter being well suited to the requirements 'and consists, essentially, of a push-pin, a, which is connected to the head of the wefthanimer so as to move forward and backward in unison therewith, and is arranged to engage with the arm 26 at one side of the pivotal aXis of the latter. When such engagement takes place, the tendency is to turn said arm around the said axis. For

the purpose of such engagement the arm 26 1s shown formed with upper and lower lwings- I), b, which are shown best by Figs.

4, 5 and 6. The push-pin is held in proper position for action in connection with one or the other of such wings by being placed within one or the other of the holes c, c', Figs. 7 and 8, which are provided in a stand d, and by means of such stand it is guided as it is reciprocated endwise. In Figs. 1 and 2 the normal or starting position of the dog being below the lip, the abnormal or secondary position is above the lip. Consequently, the push-pin is caused to occupy the upper hole, c, of the stand (Z, to act against the upper wing of the arm 26, so asby pressing against the said upper wine to transfer the dog from the upper side of? the lip to the lower side thereof. In Fig. 3, the normal or starting position of the dog being 85 above the lip, the abnormal or secondary position is below the same, and consequently the push-pin occupies the lower hole 0, of the guide-stand d, so that by pressing against the lower wing of the arm 26 the said push-pin may operate to move the arm to transfer the dog from the lower side of the lip to the upper side thereof. The pushpin a is, for convenience, connected with the head of the weft-hammer by means of a connector e, the latter consisting` of an L shaped piece, to one arm of which the pushpin is attached, the other arm thereof being engaged with the stem of a pivotal screw f, which is applied to the said head. To provide for lengthwise adjustment of the push-pin, so as to enable its action upon the arm 26 to be varied as required, the pushpin isk screw-threaded at the end thereof which is engaged with the connector. This end is placed in a hole in the outstanding arm of the connector, and receives upon it at opposite sides of such arm nuts and washers e, e. By'turning'the nuts the de-l sired adjustment may be effected.

In operation, each time the weft-hammer 18 beats forward it produces a. forward stroke of the push-pin a. If weft-fork 15 is tilted by the weft, as ordinarily will be the ease, so that the tail 15a thereof is uplifted 115 and consequently missed by the shoulder 18L of the weft-hammer, the slide 16 and arm 26 will remain at. rest. As the push-pin completes its said stroke its forward end will encounter the wing b, or b', with which it is 120 arranged to coact, in case the arm 26 and dog 27 occupy their secondary position, and will act to swing the arm so as to effect the transfer of the dog to the normal or starting position. In case the weft-fork remains 125 untilted because of weft-absence, or undue slackness of they weft, so that the shoulder of the weft-hammer engages 4the tail of the weft-fork and causes the slide 16 to advance, the arm 26 will also be advanced in unison 130 with the push-pin so that the latter Will have no effect in transferring the dog. Consequently, the action of the dog and other parts will take place as heretofore, unmodified by the push-pin.

To facilitate the act-ion in transferring the dog from one side of the lip to the other, the arm 26 is slotted longitudinally at 26, Figs. 5 and 6, for the screw 23. rlhe action of spring 29 normally holds the forward end- Wall of the slot against the stem of such screw, but when the pressure of the pushpin takes effect against one of the wings, Z) rr 7/ as the case may be, While dog 27 is still engaged with one side of lip 28c so as to opp-ose the tendency of arm 26 to turn upon screw 23 as a pivot, the said spring yields to permit the arm 26 to move forward relative to slide 16 until the dog has been carried free of the lip, which leaves the arm free to turn to the slight further extent required. As the pressure of the push-pin against the Wing with which it is engaged is relieved, the arm 26 is drawn rearward again by the action of spring 29, carrying dog 27 back with it at the proper side of the lip 28C.

What is claimed is l. The combination With a transmitting member, a dog, and a lip and a shoulder with which the dog coacts, such coaction involving a shiftl of the dog from one side of the lip to the other, and a weft-detector under control of which the interaction of dog, lip, and shoulder occurs, of means acting to restore the dog to the original side of the lip in case a sequence of beats that has been begun is interrupted.

2. The combination With a transmitting member, a dog, and a lip and a shoulder With which the dog coacts, such coaction involving a shift of the dog from one side of the lip to the other, and a weft-detector under control of which the interaction of dog, lip, and shoulder occurs, of a reciprocating member Which restores the dog to the original side of the lip in case a sequence of beats that has been begun is interrupted.

3. The combination With a transmitting member, a dog, and a lip and a shoulder With which the dog coacts, such coaction involving a shift of the dog from one side of the lip to the other, a weft-fork under control of which the interact-ion of dog, lip, and shoulder occurs, and a weft-hammer, of means through which the weft-hammer restores the dog to the original side o-f the lip in case a sequence of beats due to engagement of the weft-hammer with the weft-fork is begun and left uncompleted.

4. The combination with a weft-detector, a dog operated under the control of the weftdetector, and a transmitting member having a shoulder adapted to be engaged by the dog and a lip Which controls the action of the dog, the operation of the parts involving a shift of the dog from one side of the lip to the other, of means for restoring the dog to the original side of the lip in case of uncompleted operation of the dog leaving it at the other side thereof.

5. The combination With a weft-detector, a transmitting member having a shoulder and a lip, and a dog to engage the said shoulder to move the said member, the said dog being operated under the control of the weft-detector, also governed in its action by the lip, and having a normal starting position at one side of the lip, of means to return the dog to the said side in case of uncompleted operation of the dog leaving it atV vside of Which the dog is set for its starting position, of means to return the dog to the said starting position in case uncompleted operation of the dog leaves it at the other side of the lip.

7 The combination with a weft-detector, a transmitting member having a shoulder and a lip, and a dog to engage the said shoulder to move the said member, operated under the control of the weft-detector, also governed in its action by the lip, and which is adapted to have at will a normal starting position at either side of the lip according to the results to be attained in action, of means to return the dog to the selected normal position in case of uncompleted operation of the dog leaving it in a different position, manually controlled to conform to the variation in the said starting position of the dog.

8. The combination With a transmitting member having a shoulder and lip, a weftdetector, a movable carrier therefor, and a dog to engage the said shoulder to move the said member, the said dog being governed as to its action by the said lip, movably connected to the said carrier, and adapted to be set at Will in a starting position at either side of the lip according to the results to be attained in action, of means through Which the weft-hammer restores the dog to the selected side of the lip in case the sequence of beats of the dog is begun and left uncompleted, manually cont-rolled to conform to the variationl in the said starting position of the dog.

9. The combination with a transmitting member having a lip, a Weft-detector, a Inovable carrier for said weftdetector, a Wefthammer, a dog pivoted upon the said carrier, governed as to its actuation of the said member by the said lip, and adapted to be set at Will in a starting position at either side ofthe lip, according to the results del sired in operation, of replacing means operated'by the weft-hammer, adjustable to act at either side of the pivot of the dog, as required to restore the dog to predetermined starting position.

10. The combination with a transmitting member, a dog, and a lip and a shoulder with Which the dog coacts, such co-action including a shift of the dog from one side of the lip to the other, a weft-fork under control of Which the interaction of dog7 lip, and

shoulder takes place, and a weft-hammer, of a replacer moving in unison With the wefthamnier and by which the dog is restored to the original side of the lip in case a sequence of beats that has been begun is interrupted.

In testimony whereof I aiix my signature in presence of two Witnesses.

SIMEON SCHOON JACKSON.

Witnesses:

CHAS. F. RANDALL, EDITH J. ANDERSON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

` Washington, D. C.

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