US1802020A - Thread holding and trimming attachment for looms - Google Patents

Description

April 21, 1931. w. J. INGHAMY ET AL 1,802,020

THREAD HOLDING AND TRIMMING ATTACHMENT FOR LOOMS Filed Dec. 7, 1928 2 Sheets-Sheet l April 21, 1931- w. .1. INGHAM ET AL THREAD HCJLDIHG AND TRIMMING ATTACHMENT FOR LOOMS 2 Sheets-Sheet 2 l Filed Deo. '7, 1928 INV NT R5' A TTORN Y `'5120 solution for it.

Patented Apr. 21, 1931 1,802,020

WILLIAM J'. INGHAM .AND J'OSIELPH LAROUCI-I-E, OFr NASHUA, NEWl I-IAMPSIfIIREy i:

STATES PATENT OFFICE f i tenian-An` HOLDING anni TRIMMING ATTACHMENT Fon, LooMs Y'Application flied December 7,1928. serial Ne. 324,426.

` This invention relates to mechanisms dehandled-.by the drop boxY carrying fillingof signed to be used in looms to' hold filling different colors. When any shuttle is moved threads on drop box looms when shuttle isV into an idle positioiibythe raising or lower.- lnot-in' operation. Also, to out threadslwhich ing of the box 2 astrand of filling is left runT '15 extend loosely from the selvage of the fabric.Y ning from the fell of the goods Ato the'bobbin Q I In weaving pattern fabrics in box .looms in the shuttle that has just been moved intoits the changing offtheshuttles to produce the reidle position. vSuch a strand of filling is vquired design results inthe formation of loose shown-in Fig. l at* F VVhen-this shuttlelis I loopsof filling attached to the selvage of the again brought back into working position and K10 fabric atthe-drop box side of the loom. makes its first pick,the threador yarnF will Q0 While many attempts have been made heretobe looped around the entirewidth of'fabrio foreto out off these' threads or strands of flllwhich has been woven in the meantime.A flt ing automatically during the weavingV operais these loose loops of filling which the mech- Vtion, such attempts have not met with comanism provided. by the presentr invention is i115 meroial success, so far as we have been able designed to trim off. Or," stated more accu- 6.5 to learn, andit is still the usual'practice to krately, the invention' provides a mechanism cut ofi' such loops by hand. which prevents the formation of most of.v these The present invention deals with this probloops. i' Y Iemand aimsto devise althorough'ly' practical Stated Vbriefly the mechanism shown in- Y .cludes Vmeans for-grippingthe filling thread 70 The nature of the invention will lbe readily running from' theselvage of the kgoods to the UlldeISvtOOd from lie fllOWing CleSCIiptiOn bobbin in an idle vShuttle andineans4 for sevwhen fread in connection with the accomering the thread so gripped ata point close to panying drawings, andthe novel features the selvage.

i325 will be particularlypointed out in the {ap- VThe mechanismshown in the drawings for 7? pendedvolaims. grasping and holding the filling comprises a In the drawings, i frame piece 6 which is'supported on thelay Figure l is a perspective viewof a meohaandis secured by a bolt 7 Fig. 5, to thelay nism embodying this invention; sword 4;. This frame piece includes a mein- F ig. Q'is a perspective view of the cuttingr ber or block which is out away or grooved '8 0 mechanism shown in Fig. 1; on its rearward side, as best shown in Figs. Fig 3 is a plan `View ofthe mechanism 5 and 6,1;he groeve terminating in @notch 7 Shown in F'g- 1 OIgTPPUg the Strand 0f at theforward edge of the part 6. It will filling t0 be trimmed-0T CUQ'' be observed that thisv grooved member 64`is Fig- 4 is l f'qnt eleltlon ofthe mecha" mounted immediately in front of the shuttle msn? show n m Elg 3;. race andlies immediately beside the entrance F1g'.5 1S. a Slde Vlew of the' mehmlsm to the shuttle box. Consequently, whenaJ SIIVCF 1g' 4 and also Shows parto me ay shuttle has beenshot through the shed and e v 5 1 into the drop box, and the piel; of lling thus im Flg 6d 1S a fpersptlgrlegv ilng atlig laid in the shed has been beaten up, the filling 90 glvvlarn ld 5. andc p 4 l at that time will lie in'y approximately the 7 is a sectional ,view on the line 77, posltloi Shown at F Fig 1' H the droppox Fig 4 ,f Y v V. 2 now is operated to move the s liuttlel into 2.413 Rferring rst to Fig 1, the drop box Oia, an idle position ythe strand of filling will be '95 swungeither up or down past the rearward `b l' 's indicated at 2, the la at o, theY 'laswdiid lati, and the reed at 5, theselparts Sulf 0f th@ Part 5,: the d'ectlonlll WhlCh beingconstrueted, arranged and operated in the filling is in ovecldep-ending uponwhebher the usual manner. As is well understood by the drop box is raised or lowered.- But the T50 those skilled in this art, the several shuttles point where the filling crosses the forward 100 edge of the part 6 will still be somewhere in the notch 7.

Located immediately beside the front face of the part 6 and extending across the notch 7 is a gripper or clamping member 8. This member consists of a flat strip of resilient metal, preferably toothed on one edge, as shown at 9, Fig. 4, and provided at its upper end with a cylindrical shank portion 10 which projects through a short bracket 11 formed on the frame piece 6. This mounting of the gripperl 8 permits it to rock slightly about the axis of the shank 1 0, but it is pressed against the front face of the part 6 by a short Hat arm 12 clamped firmly in a holder 14 which is formed in the frame piece, the free end of this arm being turned backwardly at right angles and provided with a reduced tip which enters a slot formed in the gripper 8. A blade 15 is arranged to reciprocate or oscillate into and out of position between the gripper 8 and the front face of the block or extension 6. The blade is secured by a screw 16 to an arm 17 having a. mutilated gear 18 formed at one end thereof. This arm is secured fast on a rock shaft 2O which is supported in the frame 6 and is encircled by a coiled spring 21. The spring tends to hold the blade in the position shown in Figs. 5, 6 and 7 where the arm 17 rests on a, part of the frame 6 which serves as a stop. The mutilated gear 18 meshes with the teeth of a rack 22 slidable vertically in the frame 6, and the upper end of this rack is arranged t0 be engaged by either one of two cams 24--24 formed on the lower side of ay ratchet wheel 25, the teeth 26 of this wheel projecting from its upper edge. At an intermediate point the wheel is reduced and made of approximately square cross section with rounded corners, as indicated at 27, Fig. 3, and bars 28`28 are arranged to enga ge this flattened section of the wheel, the rearward ends of these bars being pivoted to the frame at 30--30, Fig. 3, while their forward ends are connected together by a coiled spring 31. The Wheel `is mounted on an upright shaft which is supported in a bearing formed in the frame 6.

In order to rotate this wheel step by step a awl 32, Fig. l, is adjustably mounted on the horizontal arm 33 of a bell crank lever fulcrumed at 34 on a bracket 35 which is adjustably secured to a part of the loom frame, as clearly shown in Fig. 1. This pawl may be adjusted vertically by turning a screw 36, Fig. 1, in or out, this screw being threaded through the upright arm 37 of said bell crank lever and bearing against the loom frame.

` It will now be clear that when the loom is in o eration the ratchet wheel 25 will be rotate one-quarter turn at each pick. This motion is imparted to the ratchet wheel as the lay swings backward, the movement being completed at approximately the time that the lay reaches the backward limit of its stroke. If this motion occurs at a time when one of the cams 24 is in position to depress the rack 22 itwill result in raising the blade 15 into approximately the position shown in Fig. 1. Due to the fact that there are only two cams 24 on the ratchet wheel the blade will be operated only on alternate picks, and the ratchet wheel is so set that this operation will occur after each pick in which the shuttle is delivered to the drop box 2. On the other picks the ratchet wheel is simply given an idle quarter turn movement. The arms 28--28 and spring 31 cooperate to prevent any overthrow of the ratchet wheel 25 and to stop its rotative movement at the end of each uarter turn. As the high point of one o the cams 24 passes over the upper end of the rack 22 the spring 21 immediately acts to snap the blade 15 into its downward or closed position where it rests between the parts 6 and 8, as shown in Figs. 4, 5 and 6. If when this movement of the blade occurs a strand of lling is positioned as shown in Fig. 1 Where it runs from the selvage of the fabric to the bobbin in an idle shuttle in the box 2, the blade will catch this filling at an intermediate point and force a bight of the filling between the parts 6 and 8. This action is illustrated in Figs. 4 and 7. The yielding clamp or gripper 8 and the block 6 cooperate to grip this bight of filling securely and to hold it while the blade 15 is withdrawn from between the gripping members to make its next stroke. This gripping'action of the parts is facilitated by the yielding or resilient character of the gripper 8 and by the fact that it is so supported that it can rock about a longitudinal axis and thus adjust itself either to the blade 15 or to the face of the part 6. Each succeeding stroke of the blade forces the bight of the filling farther' between the gripping members 6 and 8 until the end of the bight has passed beyond the teeth 9 on the gripper 8, thus positively preventing any possibility of withdrawing the filling by a movement toward the right, Fig. 4.

While the filling is held gripped in the manner just described, it is severed from the selvage of the fabric at a point close to the selvage. This severing or cutting operation can be performed by any suitable mechanism. The drawings show a temple cutter of an unique form used for this purpose. Referring to Figs. 1 and 2 the housing or casing for the temple will be observed at 40, the bracket which supports the temple at 41, and the stationary holder in which the bracket is mounted will be seen at 42. The bracket is provided with the usual plate 43 to be struck by the lay during its beat-up movement, the bracket bein g slidably mounted in the holder 42 in the usual manner. Supported on this bracket is a cutter of a type similar to a barbers clippers. That is, it comprises a Series lli of stationary teeth 'or cutters-44nd a cooperating series of movable teeth 45,the1two series-of teeth beinglield togethorinshearing' relationship. A Themovable teeth are carried by a cutter head pivotedV on the stud 46, Fig. 2', yand providedwitha shank 47 which is located immediately beside and slightly in advance of the plate 43 sothat it will be struck by the lay ij ust before the lay comesin contact with the plate 43 to operate the temple. The inovementso imparted to the arm 47 is sufficient to give the movable teeth 45 their cutting stroke. A spring coiled about the rod 48 returns the arm 47 and teeth 45 to their initial positions as soon as the arm is released by the lay. This cutting mechanism thus operates immediately beside the selvage and has a rather' wider range of action vertically than the ordinaryl temple cutter. f

Assuming that a strand of lilling'has been gripped by the blade l5 and themembers 8 and 6 which cooperate therewith, and that; it is being held by the latter members substantially7 as shown at F in F ig. 1, it will be clear that this strand will be anchored in the cloth at a point immediately in frontof the selvage cutter 44-45. cloth as the loom continues to operate will, after a very few picks, result in carrying this strand into the range of operation ofthe cutter which will sever it from ythe fabric. The

length of filling between the gripping parts 6', 8 and the selvage of the goods will simply drop down into a position entirely out of the way of the operating mechanism. The gripping devices, however, will continue to liold tween the gripping devices.

the filling indeinitely providing thev idle shuttle remains in the drop box, each closing of the blade l5 serving simply to crowd a Very short additional length of the filling in be- Consequently, when the idle shuttle which carries the filling is again brought into operation and starts on its Hight through the shed, the end of the filling will be properly gripped to cause the filling to be laid in the shed. If the shuttles are being changed very frequently, loops of filling may be formed with bothV ends anchored in the selvage, the loose part of the loop being held by the parts 6, 8 and 15 so that the anchored ends will be severed. Unless, however, the

shuttle changes are quite frequent the4 formaltion of loops will be prevented.

- of its flight through the shed.

It will thus be evident that the invention The takeup inoveinent'of the provides/,an entirely automatic mechanism y for vtrimming the loose threads from the sellthe part of the machine attendant other than tokeep itproperly lubricated. As the looin `continues to operate the severed threads drop clear ofthe machine and no trouble is experienced by the @device loading up or clogging.

,. Whil'ewe have herein shown and described aA preferred embodiment of our invention lit will be understood that the invention may be 'A embodied in other forms without departing from `the spiritor` scope thereof.

`Having thusdescribed our invention, what -we'desire to claim as new is: v. y1. In a kbox loom, the combination of means mounted on .the lay'offthe loom for gripping 'a strand-of filling running from theselva'ge ofthe fabric tothe bobbin inf an `idle shuttle in the drop box, mechanism for utilizing the motion of the lay Vto operate said means, and mechanism for severing the strandof filling so gripped close to the selvage ofthe goods.

f2.` In ya box loom, the combination of means inountedon the'lay of the loom for gripping -a strand of-filling, mechanism for supporting said meansin'position'for engagement with the. fillingsrlunning from the selvage of `the fabric to a shuttle thrown out of action at the box side'fofftlieloom, `mechanismfor opv eratngsaid means immediately following each pickk onlyin which the shuttle is dev f livered to the box side of the loom, and mech- -anism for .severing the filling so gripped at a point close to the selvage.`

'3. Ina'box loom, the combination of relatively movable parts mounted onithe lay'of vthe loom foi-gripping and holding a strand of'lillingat apoint between the selvage'edge of thefabric and an idle shuttlein the drop .mechanism Ifor operating one of said parts to give it a? grippingfmovement between the time that the working shuttle starts from tthey box sideof theloom on it'sliig'ht through the shed and returns again to the boxfand nie'anslfor cutting the strand so gripped at a ipointfclose to the selvage of the goods.

- 4. In abox loom, the combination of relatively niovable parts mounted on the layof the loom for'gripping and holding a strand of filling ata-point between theselvageedge of the fabric 4and an idle shuttle in the drop box, mechanism for `operating one of said parts to 'give it a gripping movement while vthe 'lay is at the backwardv part of its stroke and immediately after the working shuttle has lef-t the box side of the loom on its flight IVA125 throughth'e'shed, andr means for severing the :strand iso'gri'pped ata'point close to the lselvagge ofthe goods.

5. In a box loom, theA combination of parts mounted on the lay of the loom for gripping and holding a strand of filling, a blade cooperating with said parts to force a bight of filling into gripping relationship to said parts, mechanism for operating said blade to cause it to engage a strand of filling running from the selvage of the goods to an idle boxed shuttle, and mean-s supported on the breast beam for severing the strand of thread so gripped at a point close to the selvage of the goods.

6. In a box loom, the combination of parts for gripping and holding a strand of filling, a blade cooperating with said parts to force a bight of filling into gripping relationship to said parts, means mounted on the lay of the loom for supporting said parts and said blade, mechanism for utilizing the movement of the lay to operate said blade and to cause it to engage a strand of filling running from the selvage of the fabric to an idle boxed shuttle, and mechanism for cutting said strand at a point close to the selvage of the oods.

k7. In a box loom, the combination of relatively ielding parts for gripping and holding a ight of filling, a reciprocating blade` coo rating with said parts to force a bight of lling between them, means mounted on the lay of the loom for -supporting said parts and said blade, and mechanism for utilizing the movement of the lay to reciprocate said blade.

8. In a box loom, the combination of relatively yielding parts for gripping and holding a. bight of filiing, a reciprocating blade cooperating with said parts to force a bight of filling between them, means mounted on the lay of the loom for supporting said parts and said blade, and mechanism for operating said blade including a cam and a paWl and ratchet mechanism arranged to be operated by the motion of the lay for giving said cam its operative movement.

9. In a box loom, the combination of relatively yielding parts for gripping and holding a bright of filling, a reciprocating blade cooperating with said parts to force a bight of filling between them, said parts being constructed to prevent any substantial Withd rawal movement of the filling with the blade, means mounted on the lay of the loom for supporting said parts and said blade, and mechanism for operating said blade including a spring for closing the blade, a cam for opening it, and means for utilizing the motion of the lay to operate said cam.

10. In a box loom, the combination of means mounted on the lay of the loom for gripping a strand of filling extending from the selvage of the fabric to the bobbin in a boxed shuttle at the box side of the loom, said means comprising relatively movable thread ripping parts located in front of the path o travel of the Working shuttle, and

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