US2641285A - Method and mechanism for shutteless looms - Google Patents

Description

June 9, 1953 M. R. FLAMAND METHOD AND MECHANISM FOR SHUTTLELESS LOOMS Filed Nov. 28, 1950 2 Sheets-Sheet 1 INVENTOR. MAURICE QFLAMAND ATTORNEY June 9, 1953 M. R. FLAMAND 2,641,235

METHOD AND MECHANISM FOR SHUTTLELESS LOQMS Filed Nov. 28, 1950 2 Sheets-Sheet 2 INVENTOR. MAURICE BFLAMAND ATTORNEY Patented June 9, 1953 UNITED STATES ATENT OFFICE METHOD AND MECHANISM FOR SHUTTLELESS LOOMS Maurice R. Flamand, Central Falls, R. I., assignor to Draper Corporation, Hopedale, Mass, a corporation of Maine 12 Claims.

This invention pertains to improvements in methods of weaving in so-called shuttleless looms. and more specifically, to improvements in a method of operation of such looms which result indrawing the filling at slower rate from the supply, and in improvements in the 1nechanism which make it possible to accomplish this desired result.

It is a general object of the invention to control the instrumentalities which perform the insertion of the filling in looms of the type described so that the filling shall be drawn at a much slower rate as it is pulled from the source of supply, thereby to obviate insofar is practicable the tendency to break the filling by the first instrumentality at which time the material is being drawn mainly from the supply.

It is a more specific object of the invention so to control the timing and relative rates of speed and the distances moved by the instrumentalities which insert the filling, that the initial inserting movement by which the filling is drawn from the source of supply starts its movement very close to the filling to be inserted and engages that filling while moving at a relatively slow rate of speed as compared to the speed of sim ilar mechanisms heretofore employed.

It is a further object of the invention to so control the movement of instrumentalities which insert filling in looms of the type described that the filling inserting member first to engage the filling moves throughout a considerably shorter distance than does the second member or instrumentality which extends the end of the inserted filling over to the opposite side of the fabric, while at the same time moving that first mentioned instruineirtality at a relatively slow lineal speed as compared to the lineal speed at which the said second instrumentality functions.

It is a further object of the invention to devise a shuttleless loom and to provide a mode of operation therefor in which the carrier first to engage and to project a doubled length of thread for a pick shall not only engage the filling at a relatively slow rate of movement, but shall travel throughout its entire cycle at a much slower speed especially at that time at which, on certain picks, the filling must be straightened slack therein is taken up.

Further objects of the invention will become apparent from the following more detailed dis closure.

Shuttlelsss looms of this type have reciprocahle filling carriers which take filling from an outside source of supply (a supply not carried by a shuttle or inserting instrument) and function to measure oil and insert an amount of filling sufiicient for reaching across the width of the fabric being Woven. One carrier then transfers that filling to a second instrumentality which, upon release of an end of the measured material, draws that end or extends it over to the opposite side of the fabric thereby to complete the laying of one pick. These looms have one obvious disadvantage, namely, that of draw.- ing the filling from the source of supply at a very rapid rate. Since the filling is held at one end and comes from the supply only as it is inserted into the first part of the shed, and since the initial carrier or instrumentality draws a doubled length of material, the speed of filling withdrawal is relatively twice what it would be in the conventional loom, that is, while operating at the same relative number of picks per minute. This more or less unavoidable and in herent characteristic of these looms gives rise to considerable difilculty in that the filling may be broken during the initial measuring or insertion thereof by the first instrumentality to engage it and it is this inherent characteristic which it is the object of theinstant invention to alleviate or improve upon insofar as is p acticable.

Ihe invention relates both to a method of weaving and to the mechanism therefor and briefly, the improvement involves operating the carrier or inserting instrumentality first to engage the filling at a relatively slow linear velocity as compared to the velocity at'which the second instrumentality functions as it receives the filling material and extends a released end thereof across the remainder of the fabric. The actual amount of time involved for the inserting and retracting movements of each carrier or inserting instrumentality is the same, however, the mechanism is so devised that the amount of distance covered by the carrier which performs the initial inserting function is considerably less than the distance covered by the opposite instrumentality and also, the speed of movement thereof is considerably slower. In addition to this, the mechanism is so arranged that the first carrier starts its movement very close to the thread which is picked up by it and that carrier, the movement of which follows a somewhat modified harmonic motion, engages the thread at a very slow rate of speed as compared to the speed at which contact wouldhave been made if permitted to function in accordance with the prior art.

While several different arrangements of mechanism may be employed to realize the advantages herein set forth, the main objective is accomplished if the carrier driving mechanism is so moved that the distance travelled by the first or inserting carrier is substantially less as above described and also the speed of movement thereof correspondingly lower than that of the second carrier to receive the filling thereby to compensate to a relatively great extent for the fact that the initial inserting and measuring movement is one which draws from the supply the entire amount of filling required even though the period of time consumed is only one-half that incidental to the insertion of an entire pick.

Here the inserting mechanism is of a type involving flexible tapes which are caused to enter and to recede from the fabric shed by being wrapped about and then unwrapped from tape wheels, so-called, which are driven at a prescribed rate of speed by mechanism including eccentrics and gearing therefrom to the said wheels. The eccentric at that side of the loom at which the carrier first to engage the filling is located and, of course, at which side the filling supply is located, has a smaller throw or less eccentricity than that at the opposite side. It, therefore, move its tape wheel throughout a lesser angular extent than that at the opposite side, although since the eccentrics are mounted on the same shaft, the same period of time is consumed for the oscillation of one wheel as for the other. They also start and stop their movement in each direction at the same instant. In addition to the structural changes just outlined, the instrumentality or carrier which first engages the filling is set to start its movement very close to the edge of the fabric and very close to the filling to be engaged, so that the harmonic movement imparted thereto will not have progressed to the point at which the carrier will have built up more than a very low velocity at the time it contacts and starts to pull the filling from the supply.

The invention will be described hereinafter by reference to one particular embodiment thereof as outlined in the accompanying figures of drawing wherein:

Fig. 1 is a front elevational view of a shuttleless loom to which the invention has been applied.

Fig. 2 is an elevational view of one of the eccentries employed for oscillating the tape wheels.

Fig. 3 is a section taken on the vertical center line of Fig. 2.

Fig. 4 is a view similar to Fig. 2 but showing one part of the eccentric.

Figs. 5-9 are diagrammatic views showing a method of weaving a complete cycle of two picks in accordance with the invention.

Now referring to Fig. 1, enough of a loom of the type described is shown to convey an idea of the relative arrangement of the parts involved and the details of certain of the parts particularly relevant to the improvements with which we are concerned. The loom is built upon a framework comprising loomsides I [I and II, girts l2 and a breast beam l3, a top motion generally indicated by numeral I4 being supported upon an arch [5 in more or less the conventional fashion and serving to control harness frames such as that at i 6 in cooperation with a harness cam mechanism (not shown).

At each end of the loom frame are supported in a casing I! at one side and H3 at the opposite side, tape wheels one of which is illustrated at l9 since the casing I8 is broken away. Supporting structure including the braces or brackets 20 and 2| serves to retain these casings and the tape wheel mountings in proper relative relationship to the other parts so that the tape wheels may be oscillated to and fro about axes such as the axis 22 at the right hand side of the loom. The wheel is interconnected for movement by an eccentric mechanism 23 carried at the end of a shaft 24 which is rotated in synchronism with other parts of the loom and which is positively driven by interconnection to a source of power all of which is not evident here since the same is known to those skilled in the art at this time, one form thereof having been illustrated in copending application Serial No. 71,622, filed January 19, 1949, now U. S. Patent 2,604,123, and in other copending applications. The motion imparted through the eccentric mechanism 23 as shaft 24 rotates is conveyed through a rack 25 to a pinion 26 fixed to a shaft 21 and from the shaft 21 to the wheel I9 by miter gears 28 and 29.

The same general arrangement is to be found at each side of the loom although the eccentric mechanisms differ as will hereinafter be described, and the tape wheels I 9 have fixed thereto tapes, one of which is indicated at 30 and the other of which is indicated by numeral 3|. Tape 30 carries a head or carrier member 32 formed as shown in copending application Serial No. 122,952, now Patent No. 2,604,124, filed October 22, 1949. This head 32 is adapted to engage and to project into the shed of the fabric a doubled length of material, one end thereof being held in a binder or retaining element, the filling actually being drawn from the source of supply S at that time. The other tape 3| has fixed at the free end thereof a carrier member 33 which is formed as shown in the application just above referred to and which is adapted to receive the filling from the first tape as they interengage or go through a transferring function at a point adjacent the center of the loom, or adjacent the center of the fabric being woven, and then, upon release of a free end of said filling, extend that end over to the opposite edge of the fabric in a manner understood by those conversant with the operation of looms of this general description.

In actual operation the transferring function is accomplished at a point offset somewhat from the center of the fabric being woven all as illustrated in this Fig. l, the center line of the fabric being appropriately indicated thereon and the transfer point being indicated offset as described since the carrier 33 will meet and receive filling from the carrier 32 as each has moved a very slight distance from the position which it occupies in the said figure. The actual amount of offset of this transferring point may vary for different widths of fabric being woven and for different conditions, but, in general, the amount of offset is such as to render the actual distance moved by the tape 30 and carrier 32 something very appreciably less than the distance moved by the opposite tape and its carrier.

If the eccentrics 23 and 34 and the gearing intermediate those eccentrics and the wheels were exactly the same, then the movement of each wheel and each type would be the same in that it would move throughout the same distance and at the same lineal speed so long as the tape wheels were of the same diameter. However, in accordance with the principles of the invention, the simplest way to realize a slower lineal speed and a lesser extent of travel for tape 30 and its carrier 32 is to provide a smaller throw for the agendas eccentric 23 than for that at 34. While it is conceivable that the gearing might be varied to arrive at the same general result, or that difiei ential sizes of tape wheels might be employed, the latter solutions involve more complication and are probably open to the objection that less standardization of the mechanism at either side would be possible. There is a certain amount of adjustment possible for positions" the wh relatively to one another and also, oi": the relative positioning of the tapes and their heads .12 and it, but the fact that the throw of one or the eccentrics or equivalent cranl; lice anisrn gives the desired result, makes it preferable to 121211.. the two sides of the loom different in that spect only.

Now referring to Figs. 2, 3 and 4:, the eccentric comprises a circular grooved rim carried the ends of a series of op olzes, although the latter may be supplanted by a solid web, and a hub which is eccentrically arranged with respect to the center of the rim. It is desirable that the eccentrics be relatively adjustable angularly throughout a small extent and for that purpose the rim and hub of Fig. 4, while mounted on the shaft M, are affixed to a sector ill which tends radially from a second hub this lat being fixed to the shaft 2 to convey the dri. movement thereof to the eccentric itself. The interconnection between the eccentric and sector 31 is shown in Fig. 2 and comprises clamping bolts 39 and ill which pass throw 1 elongated slots in one of the parts, preferably the sector, and adjusting screws at ill and 2 for purp of effecting the angular positionin of the llia bers and for retaining them in that po. ti as they are clamped by the screws or bolts an: it. A sheave 43 formed in two attached parts rotatably disposed upon the eccentric rim the arm at the end of which the rack is car is threaded into a tapped hole M or" this or otherwise aihxed thereto.

The above description of one eccentric applies to both, the only distinction. being that the eccentricitv of the hub 36 with respect to rim is l.

for one than for the other. It is also true that the eccentricity of the hub is with respect to the slots in the sector 3'? varies by correspondin amount. It is conceivable that cranks be employed rather than eccentrics herein shown and described and. that those cranks may be of different eccentricity, or that a standa d desi n of cranl: having the possibility or v. 1g the eccentricity oi the crank pin with respect axis of revolution as at shaft M may provide for acquiring any reasonable degree of eccentricity and. thus any reasonable change in. the relative speeds the distances throu hout which tape wheels Ill may be oscillated.

Now having described the t? 21 changes of mechanism, it is b-.ieved that invention will be understood more thoroughly by referring to Figs. 5-9 and describing the action of the mechanism incidental to the insertion of two interconnected picks which to make up a so-called hairpin, it being understood that these interconnected picks are preferably inserted in the formation of a fabric thereby automatically to provide a selvage at one side of the fabric, although it may be necessary to effect the formation of a selvage at the opposite side by any one of several well known additional mechanisms to be applied to the loom. In certain instances the loom may function to insert single picks not interconnected to other picks, and in'that' event,

detail. It should suffice here to say that the principles of the invention are readily applicable to most existing shuttleless looms of the type described. The filling presenting means (filling motion) may be identical with that of the copending application above cited, or correspond to that of U. S. Patent 1,745,465. These means include a minimum of a binder cutting means and guides such adapted to hold a short stretch of the in the pathwa of the inserting member. if connected picks (hairpins) are to be inserted, then additional binding element is necessarily utilized. '1"

parts are conveniently positioned out of th of the lay mernbersand at the usual osition they occupy on these looms.

In Fig. 5, the filling at suppl 6 passes tln'eue'n an open binding or clamping element and held by a second clamping or bin ent it being understood that the fillin pass in front of or in such position as to be p.- gaged within the forked portion. of the cart vr The carrier 32 is shown at the starting point from which it effects its filling measuring or drawing movement and since the filling end is h .d at binder 4i, any'iilling drawn must come from. the supply S. In Fig. 6 the carrier 32 has moved inwardly toward the center of the fabric being woven. the extreme edges of which are illustrated here. The opposite carrier member so has also moved inwardly. It is to be noted that the same amount of time will have been consumed in moving each of the carriers from its initial position to that of but that the carrier 32 has not had to move nearly so 1'" as carrier as. Its lineal speed is much in fact, actual practice dictates that its speed may be something in the order of 12 to 15 per cent of the speed at which it would travel in the event both eccentric mechanisms were of the same eccentricity so that tape wheels lit at either side move the same distance'ancl, of course, at the same speed. Since a doubled len 1b of material is drawn at this time, that is, enough material to reach clear across the fabric when the end at lii is released and drawn to the other side by carrier 33 as illustrated in Figs. 7 and 8, the speed of withdrawal from the cone or supply tends to be come practically double what it would normally be in the conventional loom assuming the two were to function in weaving the same number of picks per minute. However. the result of this mode of operation and of the use of mechan em as herein described is that the speed at which the filling is drawn from the supply 55 is correspondingly slower that it would otherwise have been.

As shown in Fig. '7, the carrier 32 functions to draw filling from the supply only so long as is necessary in order to draw off enough material so that when the end is released and drawn to the opposite side of the fabric, it will be of sufiicient length to extend to that side and a very short distance beyond, forthe purpose offorming a selvage by twisting additional threads about these projecting ends, or in some other manner. The point at which transfer is effected and the positioning of the filling motion parts at the side of the fabric is such as to draw just enough thread for a pick whereupon release of the end and transfer are effected. That practice maintains tension right up to the point of interengagement of the hooked portion of carrier 33 with the filling as it is presented by the first carrier 32, the details of this part of the process are described in application Serial No. 122,952, now Patent No. 2,604,124, above mentioned. Substantially at that time the filling is prevented from being drawn from the supply since the binder 45 is closed. The timing of these mechanisms is preferably such that the opening of binder 56 precedes very slightly the closing of binder 45.

If the weaving involves the insertion of separate disconnected picks, the cycle just above described is repeated at each change of the shed. However, it is more preferable to weave interconnected picks or hairpins and, in that event, the carrier 32 again engages the filling which comes from supply S but which at this second pick, is not held by binder 46, although in actual practice it may pass through that binder. For purposes of simplifying the illustration it is not so shown here. The filling is again engaged and carrier 32 moves inwardly at this time drawing the filling not only from the supply S, but also from a loop of excess or material which tends to be formed adjacent the fabric selvage as the filling is released from certain holding elements all as disclosed in the application above mentioned but not shown here. The slower movement of the carrier on this second phase of the cycle presents two decided advantages in addition to the generally slower withdrawal, first, the slower movement as the thread is initially engaged as on the first pick, and secondly, the slower movement of the parts and less abrupt action as slack is taken up in the said loop just above mentioned. This obviates or at least alleviates to a remarkable extent the tendency the mechanism may have at times and with certain relatively weak fillings to break the thread as it suddenly becomes taut. On this second pick transfer is effected as on the first and the filling is cut and released so as to provide material enough to extend across the fabric as the pick is completed, the cut end being then held in binder 46 which, although not so shown here, is in fact a combined cutter and binder. The applications above mentioned furnish a complete description of such instrumentality.

The method and general principles of the invention are applicable to all types of shuttleless looms in which carriers insert filling as described. While the carriers are at the ends of flexible members as herein described, it is contemplated that the same general method may be utilized in looms of the needle or rapier type where the carriers or inserting means are not of flexible nature.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive concept may be carried out in a number of ways. The invention is, therefore, not to be limited to the precise details described, but is intended to embrace all variations and modifications thereof falling within the spirit of the invention and the scope of the claims.

Iclaimr 1. In a method of weaving in a loom of the type in which reciprocable carriers are employed to draw and insert picks of filling from an outside source of supply, the steps of drawing a doubled length of filling from the supply by a first reciprocable carrier while holding an end of the filling opposite the supply, transferring the doubled length of filling to a second reciprocable carrier releasing the first mentioned held end, holding the filling against further withdrawal from the source, and extending an end of the filling first drawn in double length, over the width to be woven by said second reciprocable carrier, and so controlling the speed of said reciprocable carriers that the first which draws the doubled length moves at a substantially slower rate and for a distance effectively shorter than the speed and distance at and through which the second instrumentality is moved.

2. In a method of weaving in a loom of the type in which reciprocable carriers are employed to draw and insert picks of filling from an outside source of supply, the steps of inserting each pick by drawing from the supply a doubled length of material sumcient to reach across the total width of the fabric being woven, then extending an end of said doubled length of filling across the fabric while holding the filling from being drawn from the supply, and so controlling the speed of drawing the filling from the supply and extending the end that the first takes place at substantially less than twice the lineal speed of the second,

3. A method of weaving in a loom of the type in which reciprocable carriers are employed for inserting filling from an outside source of supply by first drawing from the source a doubled length of material of a length suflicient to extend across the width of fabric being woven by a first reciprocable carrier while retaining an end of the filling, and then transferring the said doubled length of material to a second reciprocable carrier and extending the end thereof to the opposite side of the fabric while holding the filling against further withdrawal from the source, which comprises the improvement of drawing filling from the source of supply at a relatively slow rate of speed by moving the first reciprocable carrier at a slower lineal speed and for an appreciably smaller distance as compared to the speed and distance at and over which the said second reciprocable carrier is moved.

4. A method of weaving in a loom of the type in which reciprocable carriers are employed for inserting filling from an outside source of supply by first drawing from the source a doubled length of material of a length sufiicient to extend across the width of fabric being woven by a first reciprocable carrier While retaining an end of the filling, and then transferring the said doubled length of material to a second reciprocable carrier and extending the end thereof to the opposite side of the fabric while holding the filling against further withdrawal from the source, which comprises the improvement of positioning the first reciprocable carrier very close to the filling and of moving that carrier very slowly as it first engages the filling to be inserted and then drawing from the source of supply at a relatively slow rate of speed by moving the said carrier substantially less than one-half the distance across the fabric being woven while moving the opposed or second reciprocable carrier an appreciably greater distance and at a substantially greater velocity to meet the first carrier and to effect transfer of the filling to said second carrier oil center of the fabric being woven thereby to effect 'insertion of a'-'- complete pick in a given time interval, but to draw the filling from the supply at a slower rate as compared to the rate at which it'would be drawn if both carriers were moved equal distances and at the same velocity.

5. A method of weaving in aloomof the type in which recipi'ocable carriers are employed for inserting filling from an outside source of supply by first drawing from thesource a doubled length of material of a length suflici'ent to extend across the width of fabric being woven by a first reciprocable carrier while retaining an of the filling, and then transferring the 's'aiddoub'ledlength of material to a second reciprocable carrier and extending the end thereof to the opposite side of the fabric while holding the filling against further withdrawal from the source, which comprises the improvement of drawing filling from the source of supply at a relatively slow rate of speed by moving the first reciprocable carrier at a slower lineal. speed and :i'or an appreciably smaller distance as compared to speed and distance at 5 d over which the said second reciprocable carrier is moved in extending the released of the inserted pici: across remainder of the fabric width, and inserting two interconnected picks successively in separate while controlling the fillin to be drawn entirely from the supply on the first oi these picks and to be drawn partly from the supply and partly from a released loop of material connected to the fabric selvage for second pick.

6. In a shuttleless loom in which filling from an outside source of supply is inserted within successive warp sheds by reciprocable carriers projecting into and from the shed at each pick, that improvement in means for so moving said carriers as to draw the filling from the source at a relatively slow rate which comprises means at each side of said loom for reciprocating the carriers between their withdrawn positions and a position adjacent but offset from the center of the fabric being woven, said means being further so devised as to move that carrier which serves to draw filling from the source and to insert it part way into the shed at a substantially slower lineal speed as compared to the speed at which the said means moves the opposed carrier which receives the filling from the first and extends an end thereof across the fabric.

'7. In a shuttleless loom in which filling is drawn from an outside source of supply by a reciprocable carrier and is inserted part way through a warp shed while an end of the filling is being held, and is then transferred from said carrier to a second carrier by which a released end of the filling is then extended across the fabric, that improvement by which the velocity at which the filling is drawn from the supply is reduced which comprises synchronized means at each end of said loom by which the said carriers are caused to reciprocate, said means comprising gearing and means to oscillate said gearing, that means at the end for the first carrier having a lesser extent of oscillation than the means at the opposite end for the second carrier.

8. In a shuttleless loom in which filling is drawn from an outside source of supply by a reciprocable carrier and is inserted part way through a warp shed while an end of the filling is being held, and is then transferred from said carrier to a second carrier by which a released end of the filling is then extended across the at which the filling is drawn from the supply is reduced-which comprises oscillating members to which the carriers are attached, andmeans for oscillating said-members which comprises gearing" to said members and harmonically moved,

synchronized gear actuating means, *said last mentioned means' having a lesser am litude of movementforthecarrier which e1 ges the filling than has the similar means at the side of the carrier which extends an end of filling across the fabric.

9. In a shuttleless loom in which filling is drawn from an outside'source of supply'by a reciprocable carrier and isv inserted part way through a warp shed while an end of the filling is being held, and is then transferred from said carrier to a second carrier by which a released end of the filling is then extended across the fabric, that improvement by which the velocity at which the filling is drawn from the supply is reduced which comprises oscillatin members to which the carriers are attached, means for oscillating said members which comprises a rotating shaft in said loom, eccentric means at each end of said shaft and means including gearing for imparting motion from said eccentric means to said carriers, said eccentric means having a lesser amplitude of movement at the side for driving that carrier which draws filling from the supply as compared to the movement of the eccentric means at the opposite side of said loom.

10. In a shuttleless loom having filling carriers fixed at the ends of flexible tapes by which the carriers are reciprocated into and from a warp shed to insert picks of filling drawn from an outside source of supply, tape wheels over which said flexible tapes pass and by which they are recipro cated, that tape and its carrier by which the filling is first taken to be drawn from the supply being set closer to the edge of the fabric being woven than the opposed carrier by which the filling end is extended when said carriers are in retracted position, and means to oscillate said tape wheels at differential speeds which comprises synchronously rotated eccentrics and gearing therefrom to the said tape wheels, that eccentric which imparts motion to the wheel and its tape and carrier which are positioned adjacent the supply for first withdrawing filling therefrom having a lesser throw than that at the opposite side.

11. In a shuttleless loom having two opposed filling carriers each of which is fixed at an end of a flexible tape by which the carrier is reciprocated into and from a warp shed to insert picks of filling drawn from an outside source of supply by first projecting a doubled length of filling into the warp shed by one carrier, transferring that filling to the other carrier and then extending an end of that filling through the remainder of the shed by said other carrier, tape wheels over each of which one of said flexible tapes is passed and by which it is reciprocated, and means for imparting differential movements to said carriers through said tapes and wheels which comprises a shaft, eccentrics at the ends of said shaft ad jacent said tape wheels and gearing for imparting a motion derived from said eccentrics to said wheels, one said eccentric having a greater eccentricity than the other.

12. In a shuttleless loom having two opposed filling carriers each of which is fixed at an end of a flexible tape by which the carrier is reciprocated into and from a warp shed to insert picks 11 of filling drawn from an outside source of supply by first projecting a doubled length of filling into the warp shed by one carrier, transferring that filling to the other carrier and then extending an end of that filling through the remainder of the shed by said other carrier, tape wheels over each of which one of said flexible tapes is passed and by which it is reciprocated, and means for imparting differential movements to said carriers through said tapes and wheels which comprises a shaft, an eccentric at each end thereof, a second shaft and gearing for conveying motion therefrom to the accompanying tape wheel for each wheel and eccentric, and a rack moved by each said eccentric and geared to its accompanying 12 shaft for oscillating that shaft, the eccentric at one end of said loom having a lesser throw than that at the other end thereby to impart a slower movement of lesser extent to its carrier.

MAURICE R. FLAMAND.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,746,465 Gabler Feb. 11, 1930 1,805,046 Menschner May 12, 1931 1,883,354 Dreyfus et a1. Oct. 18, 1932 2,106,727 Drobile Feb. 1, 1938 2,355,741 Moessinger Aug. 15, 1944

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