US2596315A - Loom box front - Google Patents

Description

y 13, 1952 H. E. WENRICH ET AL 2,596,315

LOOM BOX FRONT Filed Nov. 19, 1948 INVENTORS.

HERBERT ELWENPICH and RALPH J. Norecs, E

ATTORNEY Patented May 13, 1952 DOOM BOX FRONT,

HerbertE. Wenrich andRal'ph 'J. Norce, Berwick, =Pa;

AppiicationNovember 19, 1948, SerialNot 60,884

8 Claims; 1'

ihis invention relates to an improved. box front for shuttle boxes associated, with ilooms. of the. filling replenishing type.

Although the improved shuttle, box. frontmay be used incombination with the shuttle boxes of many diiferent types of, looms, thepresent invention is more especially directed for use with a shuttle box associated with the-transfer mechanism of a loom of the type manufactured. by Croinpton 3i Knowles Loom Works, of Worcester, Massachusetts, and is commonly knownas-their models S-5 and S-6looms This particular type of loom is usually provided with a feeler mechanism which extendsthrough the shuttle box front and also through theshuttie upon alternate strokes of the lay and. which feeler will cause the automaticxtransfer or replenishing mechanism tooperate uponrthe yarn being spent on the bobbin in the shuttle. Upon the yarn bein spent onthe bobbinin theishuttle; this particular type of loom is also provided with a thread cutter of. the type shown in-UnitedStates Patent No. 1,932,801of October 31, l933,-and which comprises a cuttingzblade which is adapted to engage a metallic plateon the frontsurfaceof the shuttle upon alternate beat-up -strokes of the lay, when the cutting apparatus is positioned by the automatic transfer mechanism of the loom, and to thus sever the outgoing weft yarn from the shuttle, since this outgoing weftyarn extends across the metallic plate on the shuttle when the shuttle is boxed.

This particular type of 100m is .also provided with a templethread cutter of axtype-such as that shown in United States Patent No. 1,838,588, of December 29, 1931, and which is adapted tolsever the outgoing weft yarn of a newly transferred bobbin, as well as the final strand of weft yarn from the expelled bobbin, at the selvagei of :the cloth upon a succeeding beat-up strokexof' the lay. This type of loom has also a-fillingend-remover associated therewith comprising'a hooked. member and to which is-connected ax-suction. pipe and upon rearward movement of the lay, .thatis, upon movement of thelay away-from thebeat-up. point, the hooked member is adapted toengage. the weft yarn intermediate.the points at which it is severed, as the bobbin is being expelled from the shuttle during a. replenishing operation, was to direct this portion of the weft yarn to thesuction pipe associated with the hooked. member to prevent this piece of weft. yarn frombeing' drawn into the fabric attheselvagethereofl Heretofore various attempts havebeen made to provide a. box front having, a longitudinally extending slot, therein extending from one end thereof and terminating a substantial distance short of its end remote from the selvage of the cloth being woven and the present invention is concerned with improvements in shuttle box fronts of this type.

.The primary object of this invention is to provide. a shuttle box front of a type having a 1ongitudinallyextending slot therethrough and being open at the end nearest the selvage of the cloth and the slot terminating a substantial distance from the other endof the shuttle box front and tooprovid'e a. re-i'nforcing member disposed betweenthe upper and lower portions of the shuttle box defined by the longitudinally extending slot, the re-inforcing member also being spaced outwardly relative to theinner surface of the shuttl'e box front, which is adapted to be engaged by the. shuttle of the lcom,,so that the outgoing weft yarn. from the shuttle to the selvage of the cloth will, not. bind or rub against the inner surface of the shuttle box front.

'It, i'sanother object of this-invention to provide ashuttle box front of the type described and wherein the upperportion of the box front, which is defined by the longitudinal slot therein, is of substantially greater length than the lower portion of the box front and also the lower surface of the extended upper portion of the box front is cut at an angle, so. as to gradually increase the vertical width. of. the upper portion of the box front as it extends towardthe selvage of the cloth. The ,free end: of. the upper outwardly extending portion is then curvedoutwardly or forwardly to form a fin having anotch out in the lower surface thereof. Now, uponthe yarn bein severed by the thread cutter heretoforedescribed upon a filling replenishing operation, it is well known by those familiar with the art that the yarn thus severed will balloon, forwardly as the lay moves rearwardl'y following a corresponding beat-up stroke thereof and, as this piece of weft yarn or filling balloons forwardly it is directed downwardly to a position closely adjacent the upper surface of the lay and its ballooning is also. restricted' by the notch disposed in the lower, surface of the 1m so that upon continuation of the backward stroke of the lay, the conventional hooked member, heretofore described and associated with the suction pipe, will be disposed in the path of travel-of this ballooned weft yarn since it was directed downwardly bythe tapering lower edge of the upper portion of: the shuttle box front andthus upon thehooked member being elevated by conventional means associated with looms of this type, the notch on the lower surface of the fin will insure that the weft yarn will be picked up by the hooked member and will thus be directed to the suction means associated therewith.

It is still another object of this invention to provide a thread guiding notch on the front or leading edge of the fin and disposed adjacent the upper edge of the forwardly projecting fin and which notch is adapted to engage the weft yarn of a newly transferred bobbin as it extends from its anchoring point adjacent the magazine of the loom to the selvage of the cloth upon the shuttle being thrown across the lay and as the lay moves to a beat-up position. Since looms of this type are usually provided with a thread holding hook-like member which is also disposed in the horizontal plane of the notch in the upper portion of the fin, as the beat-up stroke of the lay continues, the notch in the leading edge of the fin will direct this lastnamed portion of the weft yarn to the yarn holding member associated with the magazine of the loom so as to cause this weft yarn to be engaged and held thereby as the lay moves rearwardly following the beat-up stroke thereof, so as to insure that this portion of the weft yarn will be disposed in such a manner as to be properly engaged by the conventional temple thread cutter heretofore described.

Some of the objects of this invention having been stated, other objects will appear as the description proceeds, when taken in connection with the accompanying drawings, in which- Figure l is a top plan view of a shuttle box of a type adapted to be associated with the usual filling replenishing means of a loom and showing the improved shuttle box front in association therewith and also showing, schematically, a filling feeler, a thread cutter, a yarn holding hook member and a portion of a filling end remover, all of which are usually associated with weft replenishing looms of the particular type heretofore referred to and in association with which the present box front is particularly constructed to be used;

Figure 2 is a fragmentary front elevation of the improved box front showing the same in association with a portion of the shuttle box, other of the parts being omitted for purposes of clarity;

Figure 3 is an isometric view of the improved box front removed from the loom and with portions of the same broken away and showing the inside surface of the box front;

Figure 4 is an enlarged vertical sectional view through the shuttle box and. is taken substantially along the line 44 in Figure 2;

Figure 5 is an elevation showing a modified form of fin which may be employed in lieu of the form of fin shown on the free end of the shuttle box front shown in Figures 1, 2 and. 3.

Referring more specifically to the drawings, the numeral In indicates an oscillatable lay of a loom which is supported at one end on the usual sword II, a portion of which is shown in Figure 1, and which sword also has an angle member l2 thereon for securing a reed cap l3 thereto as by a bolt M. A cloth sheet |5 is formed of the usual warp yarns l6 and weft yarns I! and this cloth I5 is held taut throughout its Width by suitable temples 2%, only one of which is shown in Figure 1.

As is well known, the temples are supported on the usual brest beam, not shown, and extend rearwardly so as to be disposed immediately above the lay l0 upon a beat-up stroke thereof. The particular type of temple shown in Figure 1 has a temple thread cutter 2| in association therewith, this thread cutter being of a type such as that shown in U. S. Patent No. 1,838,588 of December 29, 1931, and which is adapted to sever the weft yarn as it extends past the same and is actuated upon a beat-up stroke of the lay it in a manner well known to those familiar with the art. Since the temple thread cutter 2| and its temple 29 are conventional a further description thereof is deemed unnecessary.

The lay l0 and the sword also support a shuttle box end plate 25 having a longitudinally extending opening 26 therein through which an expelled bobbin is adapted to pass as a replenishing bobbin 3!] is moved into a shuttle 3| upon the shuttle 3| being boxed in the shuttle box 25 between a rear binder 32, of the usual construction, and an improved shuttle box front broadly designated at 33, having outer and inner ends and which will be later described in detail. The shuttle 3| has a groove 29 along one side to prevent chafing of the weft yarn H. As the shuttle 3| is thrown into the shuttle box 25, its outer end engages the usual picker 35 disposed on the upper end of a picker stick 36.

Since the improved shuttle box front 33 is especially constructed for use in association with a loom of the type manufactured by C'rompton and Knowles Loom Works, Worcester, Massachusetts, and being commonly known as Models S-5 and S-B looms, there is also shown in the drawings the usual type of filling end remover broadly designated at 31 and which comprises a tubular member 48 whose rearmost wall is bent downwardly and forwardly to form a hook portion, not shown, but which is well known to those familiar with the art. This tubular portion 40 is suitably connected to one end of a flexible suction tube 42 which extends to a suitable container, not shown, there being the usual type of suction means associated with the loom for creating a suction in the suction tube 42 upon each beat-up stroke of the lay IEI.

It might be stated that conventional means, not shown, causes the hooked lower end of the tubular portion 4|) of the filling end remover 37 to move into a position closely adjacent the upper surface of the lay l0 during a transfer or filling replenishing operation so as to cause this hooked end to be disposed in the path of travel of the outgoing weft yarn and 'to further cause the tubular member 4|] to move to an elevated position immediately following the transfer operation so as to be disposed above the path of travel of the shuttle during normal operation of the loom.

Looms of this type are also provided with a hook-shaped yarn holder 45 which is supported in a conventional manner by the mazazine, not shown, of the loom and the free or hooked end 45a of which is disposed in substantially the same horizontal plane as the upper edge of the shuttle 3| when the shuttle is in boxed position and upon a beat-up stroke of the lay I0. The usual type of thread cutter bar 41 is adjustably secured, as by a bolt 50, in one end of a swing arm 5| which is controlled by the usual transfer mechanism, not shown, for moving a cutting blade 52, carried by the thread cutter bar 41, into engagement with the outer surface of the shuttle 3| for severing an outgoing filling yarn upon a succeeding beat-up stroke of the lay l0, there being a suitable opening in the shuttle box front 33 to be later described to accommodate the thread cutter blade 52. The usual transfer mechanism of this type of loom is actuated by a conventional type of feeler mechanism comprising a housing 54 which is supported by the loom in the usual manner and which has spring loaded feeler fingers 55 extending rearwardly therefrom and which are adapted to penetrate a suitable opening provided therefor in the shuttle box front 33, as will be later described, and a suitable opening, not shown, in the shuttle 3| so as to engage the peripheral surface of the bobbin 3!] and which will cause a transfer operation to take place upon the supply of filling yarn carried by the bobbin (it being exhausted. The structure shown in the drawing and described above is conventional, except as to the box front and a detailed description of the same will now be given.

The box front 33 comprises an outer end portion at having a planar portion 6| integral therewith which is provided with an adjustment slot 62 which is adapted to be slidably penetrated by a screw 63 for securing the improved box front 33 to the shuttle box plate 25. The shuttle box front 33 has a longitudinally extending slot Gil therein which slot 64 is enlarged, as at 65, to accommodate the thread cutter comprising the cutter bar ll and the cutting blade 52, in the manner heretofore described. This elongated slot 64 extends in substantially parallel relation to the upper and lower surfaces of the shuttle box front 33 and its left-hand end in Figure 2 terminates in a reinforcing or bridging portion 66 cast integral therewith and which is cut away on its inner side, as at 61, so as to provide an opening through which the weft yarn may extend upon the shuttle 3! being boxed, and so as to prevent the weft yarn from becoming ensnared on or chafed by the inner surface of the shuttle box front 33. This bridging portion serves as a supporting means for preventing faulty transfers on weft replenishing looms and prevents breakage of the upper portion l2. This breakage of the upper portion has been a common occurrence in similar box fronts heretofore in use and which were not supported in the manner described.

The shuttle box front 33 extends toward the selvage of the cloth being woven a substantial distance beyond the reinforcing member 65 and has an opening ll] therein defining a lower portion ll and an upper portion 12, the upper portion l2 extending a substantial distance further toward the selvage of the cloth [5 than the lower portion H. The opening is provided to accommodate the feeler fingers 55 upon each beatup stroke of the lay [0, in the manner heretofore described. Extending forwardly from the improved shuttle box front 33 and intermediate the ends thereof is a second planar portion 13 (Figure 4) which also has an adjustment slot 74 therein which is slidably penetrated by a screw '15 to also assist in securing the shuttle box front 33 to the upper surface of the shuttle box front 25.

Referring to Figures 2 and 5, it will be observed that the upper portion 12 of the inner end of the shuttle box front 33 not only extends a substantial distance further toward the selvage of the cloth it than th portion 1| but its lower edge 1'! is cut at an angle and tapers downwardly so as to increase the thickness of the upper portion 12 as it extends toward the selvage of the cloth [5. This upper portion 12 then extends forwardly to form a fin 80 which has a projection 6 8| on the lower surface thereof forming a notch 82.

The front or free end of the fin 8G is cut at a slight angle relative to the vertical, as at 83, to form a thread guiding notch 84 adjacent the upper edge of the fin but disposed in the leading edge of the fin 80, the box front 33 has a suitable lining such as leather secured thereto by any suitable means such as screws 86, 81 and 88. It will be observed in Figure 2 that the lining material 85 extends around the lower portion H of the box front 33 and the screw 88 is secured to the portion of the lining material 85 which is turned back upon itself around the free end of the lower portion I I.

Referring to Figure 5 there is shown a fin portion 80a which may be employed in lieu of the fin portion 80 at the end of the upper portion 12 of the shuttle box front 33. This fin portion 80a may also have one end of a suitable lining material 85a suitably secured thereto, as by a screw 37a. This modified form of fin 80a curves forwardly and downwardly and is penetrated by an angularly disposed or inclined shaft which is secured therein, as by a set screw 9|. Since the modified fin 80a curves forwardly and downwardly, a curved or angular surface 83a is formed which, at its juncture with the upper portion of the inclined shaft 90, forms a yarn guiding notch 84a.

Since the lower portion of the inclined shaft Q3 extends outwardly from the lower surface of the fin Blia and rearwardly at an angle, a notch 82a is formed at the juncture of the shaft 90 with the lower surface of the fin 80a. The notches 82a and 84a serve the same identical purpose as the notches 82 and 84 associated with the fin st of the original form of the invention.

The purpose of the notch 84 is to direct the filling which extends from the selvage of the cloth l 5, immediately following the transfer of a new bobbin into the shuttle 3|, to the usual anchoring means associated with the magazine, not shown, of the loom so as to engage this yarn causing the same to slide upwardly along the surface 83 and to enter the notch 84 and, upon continued forward movement of the lay, this notch 84, being in substantially the same horizontal plane as the free end 4511 of the yarn retaining hook 45, will direct the yarn to this yarn retaining hook 45 so that upon movement of the lay l0 away from the beat-up position, the yarn will be retained by the hook 45 and held taut by the same from the selvage of the cloth [5 so as to be severed by the temple thread cutter 2| upon the next succeeding beat-up stroke of the lay.

On the other hand, the notch 82 is caused to engage the weft yarn which has just been released from a spent bobbin, upon this spent bobbin being replaced with a replenishing bobbin in the shuttle 3|, and this notch 82 will engage this yarn as the lay moves in a backward stroke following the transfer operation and, at which time, the hooked lower end of the tubular portion 40 of the filling end remover 31 will be disposed in a lowered or operative position. Then the notch 82 will direct the yarn to the hooked lower end of the tubular portion 40 and, at the end of the backward stroke of the lay l0, conventional means, not shown, will cause the filling and remover 31 to be elevated thus drawing the yarn with the same and causing the free portion thereof to be sucked into the suction tube 42 and, upon the next beat-up stroke of the lay ID, the

atee ais temple thread cutter 2 will sever thesan'ie piece 7 of Weft yarn thusreleasing the same to be drawn into the container not shown, towh ich the suction -tube 42 is connected) In the drawings" and specification theref has been set'forth apreferredembo'di-mentof the in vention, and" although specific terms are employed, they are usedin agenericand descriptive sense only; and not"for"purposes of limitation,

the scope of'the inventiorr -b'eing defined in the claims.

We .claim:

1. A'boxfrontfor looms: adapted to besecure'd to the top of thelayof a'lloornand having a slot in its outer half extendingflong'itudinally"of; the box front and closed at both ends,- the inner-end of the" box front havin'g itslower edge cut away to provide a se'condfslo't between-itslower edge and the-top of the laypthe'" inner end of thebox front curving laterally aiwayffrom thelay and flaring downwardly, the"extreme-tip of the inner end: of the box front having aninclined surface provided with 'a'no'tch and the lower edge" thereof 'al'sohavinga notch therein opening in a reverse direction from the first notch.

2.: Ina lo'om having-alayand a-box' frontiseing -a longitudinallydisposed slot extending froma longitudinally disposedslot extending from near its outer end to its innerend and dividing the box" front into 'upper andilower portions, a bridging porti'on:cas'tintegral with the upper and lower portions, the inneren'd of the'box front curving lateralllyiiaway from 'the'lay and an inclined shaft slid'ably l mounted in the inner end of 'the box front -and"proj'ectihg b'eyon'd the upperand lower edges -DF the inIier -end of the box front "for engaging weft yar ns' during oscillation of the lay;

4r In a loom having a layand a shuttle box'o-n at least one end 'off thelay and ashuttle-adapted' to be thrown" across: theiay and having -'a weft yarn carryingi bobbin therein and said loom also having -.a transfer mechanism asso'ciated therewith and the transfer mechanism including a hooked member disposed 'closelyadjacent the lay upon'a' beat-up stroke thereof and during a transfer operation and the hooked member -be-' lng opened on its'side-toward the front of the loom, an improved box front adapted to be secured to the top of the lay at said shuttle box and having a longitudinallyextendingslot ther'c in dividing the'same into 'an' upper portion and a lower portion,said upper portion extending-a substantial distance beyond the inner end' ofthe' lower portion of thebox' frontg the upper portion gradually increasing in width from a point in 'a' Vertical plane above the" inner end of the lower portion to the inner-end of'the'upper portion of the shuttle box so as to provide a downwardly sloping lower edge on-the extending upper portion, a forwardlyprojectinglfin on the extreme i end of; the innerend of the upper portion and said fin" having r a-rearwardly opening notch in the lower surface thereof and the loweredge'of said fin terminating in substantially the" same V 8 V 7 horizontal plane as the uppersu'rfa'ce of the lay whereby 'up'ona transfer operation taking place;

a final strand of weft yarn from an expelled bobbin 'will be engaged by said rear Ward y-of e'ri ing' not'ch in the bottom of the fin upona" back ward stroke of 'the lay so as to directthe yarn downwardly to a position in'close proximity to the upper surface of the lay to he engaged by said hooked member associated with the transfer mechanism of the loom.'

5. In a'loom having a lay and a shuttle boxat at least one end of the lay and also havingi'a shuttle adapted to be thrown across the-lay and a weft yarn carryingi' bobbin.- disposedin the" shuttle and said loom also'having a' transfer mechanism thereon including aryarn holding member the free end'ofWhich-isdisposed for wardly of and closely adjacent theuppe'r surface of the lay upon a beat-up stroke of the lay, an

improved shuttle box front and'means securing the shuttle box front to the upper surface of the lay, said shuttle box front havinga' longitudinally extending slot terminatinga substantial distance short of its'outer end and being open at its inner end and defining aniupper'portion and a lower portion of the shuttle box front, said upper portion extending a substantial distance inwardly beyond the inner end of the lower portion, a forwardly projecting'fin'integral with said upper portion and said forwardly projecting;

fin being of substantially greater vertical width than the vertical Width of the shuttle box front and the lower front end'of the fin being disposed in a horizontal plane slightly below theupper surface of the lay, said fin having a notch in the front edge thereof and said notch being. disposed closely adjacent the upper edge of the fin and being substantiallyV-shaped; whereby upon a transfer operation taking place the outgoing yarn of a newly transferred bobbin in the shuttle will extend past the notch in the front edgeof the forwardly projecting fin so that a succeeding beat-up stroke by the lay will cause the notch in thefin to direct the outgoing yarn to th'e yarn holding member so the yarn' will be'retai'ned by the yarn holding member upon a succeeding backward stroke of thelay." V V 6. In a loom having a" lay and a shuttlebox at at least one end of the'lay andfalso having'a shuttl'eadapted to be thrown acrossthe lay'an'd" a weft yarn carrying bobbin disposeddnf the" shuttle and said loom also having a'transfer mechanism thereon including a'yarn"holding' member the free end of which is disposed forwardly-of and closely adjacent the uppersurface' of the'lay upon a beatupstroke ofthe lay, an improved shuttle'box front and meanssecurlhg" the-shuttle box front to the upper surface of the lay; said shuttle box front havinga longitudinally extending slot terminating a'substanti'al distance short of its outer end and being open atits inner end and defining an upper portion and a lower portion of the shuttle box front, said upper'pore' tion extending a substantial distance invvardly" beyond the inner end of the lower'po-rtion, a for wardly extending fin integral With saidupper' portion and said forwardly projecting fin being of substantially greater vertical width than'the vertical width of the shuttle box front and the lower front end of' the fin being disposed in a horizontal plane slightly below the upper surface of'the'lay and the upper front edgeof the fin;

being disposed slightly above the horizontal plane ofthe nominal uppfir surface of the shuttle box front, said fin having a'notch" in the front; 7 edge thereof, said notch being disposed closely adjacent the upper edge of the fin and being substantially V-shaped, whereby upon a transfer operation taking place the outgoing yarn of anewly transferred bobbin in the shuttle will extend past the notch in the front edge of the forwardly projecting fin so that a succeeding beat-up stroke by the lay will cause the notch in the fin to direct the outgoing yarn to the yarn holding member so the yarn will be retained by the yarn holding member upon a succeeding backward stroke of the lay, a reinforcing member integral with and disposed between the upper and lower portions of said box front which are defined by the longitudinally extending slot appearing therein and having its rear surface cut away so as to provide a space between the rear surface of the same and a shuttle engaging the rear surface of the shuttle box front and through which space the weft yarn of the boxed shuttle may have freedom of movement.

7. In a loom having a lay and a shuttle box at at least one end of the lay and also having a shuttle adapted to be thrown across the lay and a weft yarn carrying bobbin disposed in the shuttle and said loom also having a transfer mechanism thereon including a yarn holding member the free end of which is disposed forwardly of and closely adjacent the upper surface of the lay upon a beat-up stroke of the lay, an improved shuttle box front and means securing the shuttle box front to the upper surface of the lay, said shuttle box front having a longitudinally extending slot terminating a substantial distance short of its outer end and being open at its inner end and defining an upper portion and a lower portion of the shuttle box front, said upper portion extending a substantial distance inwardly beyond the inner end of the lower portion, a forwardly extending fin integral with said upper portion and said forwardly projecting fin being of substantially greater vertical width than the vertical width of the shuttle box front and the lower front end of the fin being disposed in a horizontal plane slightly below the upper surface of the lay, said fin having a notch in the front edge thereof and said notch being disposed closely adjacent the upper edge of the fin and being substantially V-shaped, whereby upon a transfer operation taking place the outgoing yarn of a newly transferred bobbin in the shuttle will extend past the notch in the front edge of the forwardly projecting fin so that a succeeding beat-up stroke by the lay will cause the notch in the fin to direct the outgoing yarn to the yarn holding member so the yarn will be retained by the yarn holding member upon a succeeding backward stroke of the lay, and said fin also having a rearwardly directed notch in the lower surface thereof for directing the final strand of yarn, from a bobbin expelled from the shuttle box in a transfer operation, rearwardly upon a succeeding backward stroke of the lay.

8. In a loom having a lay and a shuttle box at at least one end of the lay and also having a 10 shuttle adapted to be thrown across the lay and a weft yarn carrying bobbin disposed in the shuttle and said loom also having a transfer mechanism thereon including a yarn holding member the free end of which is disposed forwardly of and closely adjacent the upper surface of the lay upon a beat-up stroke of the lay, an improved shuttle box front and means securing the shuttle box front to the upper surface of the lay, said shuttle box front having a longitudinally extending slot terminating a substantial distance short of its outer end and being open at its inner end and defining an upper portion and a lower portion of the shuttle box front, said upper portion extending a substantial distance inwardly beyond the inner end of the lower portion, a forwardly extending fin integral with said upper portion and said forwardly projecting fin being of substantially greater vertical width than the vertical width of the shuttle box front and the lower front end of the fin being disposed in a horizontal plane slightly below the upper surface of the lay, said fin having a notch in the front edge thereof and said notch being disposed closely adjacent the upper edge of the fin and being substantially V-shaped, whereby upon a transfer operation taking place the outgoing yarn of a newly transferred bobbin in the shuttle will extend past the notch in the front edge of the forwardly projecting fin so that a succeeding beat-up stroke by the lay will cause the notch in the fin to direct the outgoing yarn to the yarn holding member so the yarn will be retained by the yarn holding member upon a succeeding backward stroke of the lay, and said fin also having a rearwardly directed notch in the lower surface thereof for directing the final strand of yarn, from a bobbin expelled from the shuttle box in a transfer operation, rearwardly upon a succeeding backward stroke of the lay, an inclined shaft penetrating the forwardly projecting fin and being adjustably secured therein, said inclined shaft projecting from the upper surface of said fin so as to define the first-named notch in the front edge of the fin and said inclined shaft extending beyond the lower surface of the forwardly projecting fin so as to define the rearwardly directed notch in the lower surface of the fin.

HERBERT E. WENRICH. RALPH J. NORCE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,727,315 Warren Sept. 3, 1929 1,812,079 Burdett June 30. 1931 2,170,384 Lanier Aug. 22, 1939 2,310,369 Hicks Feb. 9. 1943 2,385,034 Sheetz et al Sept. 18, 1945

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