US1463435A - Automatic loom - Google Patents

Description

.I'uly 3i, 1923.

J. NORTHROP AUTOMAT IC LOOM Filed March 18, 1918 5 Sheets-Sheet l July 31, 192:5.

J. NORTH ROP AUTOMAT I C LOOM Filed March 18. 1918 3 Sheets-Sheet 2 July 3l, 1923.

J. NORTHROP AUTOMAT I C LOOM Filed March 1B, 1918 3 Sheets-Sheet 5 Patented July 31, 1923.

UNITED ASTATES PATENT OFFICE.

JONAS NORTHROP, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR T0 HOPEDALE MANU- FACTURING COMPANY, 0F MILFORD, MASSACHUSETTS, A CORPORATION 0F MASSACHUSETTS.

AUTOMATIC LOOM.

Application tiled March 18, 1918. Serial No. 223,097.

To 1N rhom- 'it may concern Be it known that I, JoNAs NoRTHRoP, a citizen ot the United States. residing at Hopedale, in the county of Worcester and State of lilassachusetts, have invented certain new and useful Improvements in Automatic Looms; and I do hereby declare the following: to be a full. clear, and exact description of the invention, such as Will enable others skilled in the art to which it appertains to mnke and use theI same.

The present invention relates to an nnprovement in automatic weft replenishing looms.

The chief object of the invention is to prevent the formation of double picks during the weaving ot' the cloth. Further objects of the invention will be pointed out as the description proceeds.4 A double pick may occur from one of two causes: (l) It occurs on i1 filling feeler controlled, weft replenishing loom it' the filling end extending from the seivage to the hohhin in th shuttlewhen the latter is boxed for the. replenishing operation-is drawn or whipped into the shed after the replenishing operation: (2) it occurs on both filling feeler controlled and filling detector controlled. weft replenishing looms if the filling end extending from the hopper stud to the selvnge after the first pick following the replenishing operation is broken and is drawn or whipped into the shed. Various devices have. heretofore been proposed for preventing the formation of double picks. and many of these devices have been extensivcly used and have accomplished their purposes more .or less successfully. The chief ditliculty with these prior devices` as it u )peurs to the present inventor. has lain in t e uncertainty of their operation in securing and acting upon the filling ends. It is accordingly proposed to overcome this difiiculty bv so constructing' on automatic loom that the various devices thereof forming;r the subject-matter of the present invention will act uniformly and positively in securing the filling ends, and thereby prevent ing them from being drawn or whipped into the shed to form double picks. To this end and to the accomplishment of the other objects /of the invention, the presentinvcw tion resides in the structure particularly pointed out in the claims, a specific form this structure being: described in the foi :i in r specification.

The preferred form in which it is contemplated embodying the invention is illustrnted in the accompanying drawings, in which F igure 1 is an end elevation of a portion of a weft replenishingir loom, showlng the application thereto of the various devices of the resent invention for preventingr the formation of double picks; Fig. 2 is a sectional plan of the parts shown in Fig. 1, taken on various planes for the purpose of showing' the construction more clearly; Fig. 3 is a rear elevation of a portion of the thread clamping and parting mechanism; Fig. h1 is a side elevation of the devices shown in Fig. l, with the partssin different positions and showing their relation to the lay as the latter moves forward on the replenishing beat-up; and Fig. 5 is a front elevation of the replenishing;r shuttle box.

(lertaiin features of the present invention are linirticularly adapted for application to fecler controlled.` weft replenishing looms. or feelcr looms. es they are more commoril)v known; and othert'eatures of the in.

volition are adapted for application to both teeler looms and fillingr detector controlled` weft rcplenishing looms. A feeler loom is a. type ot weft replenishinpr Loom wherein a filling` feeler mecha nisni iscmployed to determine the state ot exhuustion of the filling in the active shuttle, and when the filling has been exhausted to a predetermined or critical extent.` to cause the insertion in the shuttle of a fresh supply of filling by the replenishinc mechanism. A filling detector controlled replenishing loom is one in which a filling detector mechanism determines the. absence or presence of filling' in the shed. and when fillin is absent either from breakage or complete exhaustion, causes the insertion ofa fresh supply in the shuttle. In feelcr looms an intact strand. of filling'l extends from the selvage to the hohbin in the shuttle when the latter is boxed for the replenishin operation. ln fillingdetector controllo looms there is no filling` end extending from the eelvage to the bobbin about to be ejected from the shuttle. Con-se uently, it is necessary to provide only feecler looms with devices for preventing the strand of filling extendin from the selva e to the outg ing bobbln from bein su quently drawn into the shed. But in th feeler looms and filling detector controlled, replenishin looms a lling end extends from the Stull of the hopper to the salvage after the rst pick following replenishment, and so it is necessary in both types of looms for the production of the highest grades of fabric to prevent this filling' end from being drawn into the shed. l

The automatic weft replenishing loom of the present invention may be of any usual or preferred form whereinl the filling is replenished by the insertion in the active shuttle of a. filled bobbin, which expels the old bobbin on which the filling,y may be 'exhausted either to :i rcdetermined extent, or from which the lil ingy may be completely exhausted. The weft replenishing mechanism, of which the ho 'iper for containing,r the supply of lletl bohinns is indicated in dot and dash outline at itl. is adapted to be thrown'into operation by :in oscillation to the left, Viewing Fig. l, of the hopper arm ll secured to and extending upwardly from n hollow change shaft l2. This hollow change shaft 12, when the devices of the present invention are applied to a feelfr loom, that is to say, a loom in which the weft replenishing opera,- tion takes place on predetermined or critical exhaustion ol thel filling in the active shuttle, is connected with the filling teeler mechenism; and, on the other hand, when the replenishing mechanism is thrown into operation on the absence of filling, the chungo shaft is connected with the filling: detector mechanism. Both the filling feeler mechnnism and the lillinpr detector mechanism may be oflnny usual or preferred form, and inasmuch "es their construction and inode of op` eration nrc familier lo those skilled in the wearing err, it is not. necessary to an understandin? ol the present invention to illustrato or elcfiribc tluii'i. The hollow change shaft 19 and its associated parte are known ns the loom controlling devices. Yhon on the indication ot' either critical exhaustion or absence ol' theI filling the change shaft 12 is ost-illzitcd in u direction to swing the hopper arm li outwardly, that is, to the left. viewing l"i f, 1. the transfer-rer hitch 14 is positioned in the path of the bunter l5. so thin. on ih:- l'ollowinn heat'up of the lay the i'i-plenisliinig operation tzilns pince. This lli-:dwp ol the lily is known :is the replenishing bent-11p und nsually occurs on the beatup following; the detection of the absence, or the critical exhaustion, ot' the filling. The trnnsferrvi latch 14 is pivoted on the lower end of un nrni lf3 loosely mounted on a sllni ifi tixcd in the hopper phitc i. on which the hopper l0 is supported. A pin 2O extending laterally from the inner side of the translerier latch is engaged by u slot 2l formed in the lower end of an arm 22 depending downwardly from the hub of an erm 17, which is loosely mounted on the stud 13. The upper end of the arm l? is yleldingly connected by n spring 18 with an angle piece l9 vertically adjustable on the upper end of the hopper arm ll. The construction sind operation of these parts are well known to those skilled in the weaving art,

The prevention ofthe formation of double picks by the devices of the present invention is 1n part accomplished by a novel form of replenishing shuttle box. The replenishing shuttle box is the shuttle box located at the end of the lay on the replenishing side of the loom. This shuttle box is indicated generally by the reference character It comprises a bottom plate 26, which is the shuttle race of the lay 2T, a hack wall or binder 28, a top plate 29, and a two-part front wall indicated generally at 30. The top plate 29 at its inner end extends forwardly over the inner end of the shuttle, box, and the front shuttle box wall 30 is provided with a bracket piece or arm 31 which rests on the inner end 24 of the top plate und is adjustnbly secured thereto by means of a bolt 32. An adjustment screw 33 is provided for the purpose of laterally adjusting,lr the outer end of the upper part 3G of the front box wall. The front box Wall 3() of the rcplenishing shuttle box is composed of en upper part 36 depending,

from the bracket 31., and n lower part 3 which is bolted to the shuttle race by means of cnpscrews 3S. A narrow longitudinal slot 39 separates the upper and lower parts of the front box wall 30 throughout their entire length. -lVhen the shuttle 40 comes to rest in the replenishing shuttle box with its outer end against the picker 4d, fastened to the upper end of the picker stick 42 which operates in well-lmown manner` the eye 43 of the shuttle is at a substantial distance from the outer ends of the front box wall. This is for the purpose of permitting cer tain of the `fle-vices of the present invention to operate on the filling extending from the seh-*nge to the shuttle eye at a point, between the outer end of the front box wall and the shuttle eye.

After the weft replenishing operation takes place and before the lay heats haelt Ward, the relative positions of the parts are substantially as shown in Figs. 2 .find 5. The filed bo'bbin 45 is in the shuttle and from it there extends a strand of lillinplr .4G under the end plate 44 of the hopper to the hop er stud 47, to which the free ends of the lied hobbins in the hopper are all attached. This strand of filling is known aslthe incomingr filling end. As ,the lay beats backward after the replenishi'rig operation. the shuttle is picked to thc opposite side of the lay. and the iricominr;- lillinpr end 46 being held at its outer end by the hopper lll) stud 47, draws down onto the threading block 48 in the shuttle. It sometimes happens, however, by reason of the outer extremity of the incoming filling end beingheld at a point above the top ot the threading blocln 48, as appears from Fig. 5', that the thread or filling fails to be drawn down into the threading block on the first pick oflthe shuttle after the replenishing operation; and thereupon a real lnisthread occurs, that is to say, the filling breaks on the pick of the shuttle to the replenishing side of the loom. One of the features of the present invention is to render the threading;- of the shuttle on the first pick after replenishment more certain. This is effected by the novel form of the front wall of the shuttle box. The outer end or point 35 of the upper part 36 of the wall is upturned a substantial distance above the top of the shuttle, as shown in F ig. 5. The result is tlat as the lay beats backward after replenishment, the incoming.filling end 46 is caught bv the under side of the point 35 and is rawn down under the upper part 36 of the front box wall into the slot 39 as the shuttle is picked to the other side of the lay. This slot 39 is substantially on the plane of the shuttle eye 43. Consequently` while the shuttle is performing the first part of its fiight after replenishment, the outer end of the filling is held at a point below the upper surface of the shuttle and the chances of the filling beingr drawn. down into the threading block are greatly increased; and conversely, the chances of real misthrcads occurring are correspondingly decreased. By the time the lav has reached its rear center the incoming filling end has been drawn entirely ont of the re lenishment shuttle box through the slot 3. owing to the relative movement be tween it and the lay.

When the shuttle has completed its first flight after replenishment and the warp threads have erossedyfor the next shedding, it is desirable to sever the incoming filling end adjacent the seivage as soon as possible thereafter, in order to prevent the filling end from being broken and whipped into the shed, and thereby cause a double pick. The usual device for severing the filllng end adjacent the sclvage is a temple thread cutter, indicated at 50, Fig. 2. The action of these temple thread cutters is necessarily somewhat uncertain` and, con` sequently in order to prevent the incoming filllng end from being drawn or whippedv into the. shed before it is cut at the selvage. it is necessary to prevent the filling from being chaf'ed and broken by the replenishing shuttle box. This is accom` plished by guiding the filling into the slot 39 in the front wall of the shuttle box so that the filling may readily enter the shuttle box and not chate on the front wall thereof.

The filling is guided into the box by the inclined surface 5l of the inner end of the upper part 36 of' the front4 box wall.

The devices of' the present invention. which operate to prevent the filling end extending from the selvagc to [he hohbin in the shuttle when the latter has been boxed for the replenishing operation following an indication of predetermined exhaustion of the filling by the filling feeler mechanism. comprise means for grasping the filling at a point adjacent the shuttle eye and pulling it completely out of the replenishing shuttle box after it has been severed on the other side of the eye. This filling end is known as the outgoing filling end. The thread grasping or clamping means is adapted to hold the outgoin filling end until it has been severed at t e selvage by the temple thread cutter It is thus prevented from being drawn into the shed by the shuttle.

The mechanism for clan ing and parting the outgoing filling end is composed of two separate parts, one of which performs only the clamping operation and the other ot' which performs only the severing operation. The thread clamping device comprises a lower fixed clamping jaw 53 and an upper movable clamping jaw 54. These clamping jaws are normally held in closed position relatively near the breast beam 55. as shown in Fig. 1, so as to be out of range of the lay, but are adapted to be opened and to be moved rearwardly toward the lay when the filling feeler mechanism indicates critical exhaustion of filling. so as to be in position to grasp the outgoing filling end in close proirimit)1 to the shutth` eye as the lay moves forward on the replenishing heatup. ln order that the clamping jaws may more effectually perform their thread grasp` ing and clamping operation.v the shuttle is cut away at 56 on the horizontal plane oi the shuttle eye, and the relative movement of the clamping jaws vand the lay yis such that the rear or outer ends of the jaws enter the recess 5G before they close upon the filling thread. It will be observed that the likelihood of the clamping jawsgrasping the filling at this point is much greater than it would be if they were positioned to operate at a` point nearer the inner end of the shuttle box. ln fact. experience has shown that the position of the filling thread at this point is so nearly positive and uniform that it is only necessary to provide a relatively small opening between ,the clamping jaws in order that they may grasp the filling. It will bereadily understood, however, that the recess 56 may be widened and that. the clamping jaws may be so oonstructedas to open wider if it is desired.

The lower clamping jaw is secured to the lower end of an arm 58 pivoted for swlnging movements tward and from the lay on a pin 59 fixed in the upper end of an upwardly extending part 6U of a braeket 6l secured on the outer end of the stud 13. The clamping jaws are moved from their normal position. as vfhown in Fig. 1, rear wardly toward the lay to their position t'or grasping the filling. :is shown in Fig. 4, by means of an arm (lil which engages the torward side of a pin (il projet-ting laterally from the inner side of the lower end of the arm 58. The arm 63 dependslfrom and is Secured to a rod G5, the outer end of which is iournaled in the lower portion ot' tbe bracket 6i, and tbe inner end oi' whirh is journaled in the hopper plate 9. as shown in Fig. 2. The rod o5 js oscillated so as to move the clamping jaws rearwardly toward the lay, by means of n hook Gif the barbed portion GS ot whic'b engages the rear side of the upturned end (i9 of the rod 65. The hook 6'." is pivoted at. its forward end on the pin '7H passed through the rear end of the angle piece 19. The under side of the hook Si lightly rests on the upper end of the arm l?. `hen on the indication of predetermined exhaustion of filling, the hopper arm 11 swings outwardly, the hook 67 is thereby drawn to the left and the rod 65 and the arm 63 are oseillated in u direction to move the clamping,y jaws rearwnrdly. The rearward movement of the lower end of the arm 5S wh ich earries the clamping jaws is not so great as the movementof the hook 67. so that when the clamping jaws have been moved to their rearward position for grasping: the filling, the continued movement of the hook 6T has no elfeet upon the arm G3, because at this time the barb 68 of the hook is disconnected from the end G9 of the rod 65. This is effected by means of a earn piece 72 in fixed relition with the hook 67. The lower side of the cam piece 72 rests on the hub T3 of the arm 17, and the rear end thereof projeets downwardly somewhat below the top surface of the hub 73, so that as the cam pieve TQ aol the hook 67 are moved forward with the hopper arm 11, the engagement of the cam piece 72 withthe hub T3 causes the barb 68 of the hook to be disengaged from the end 69 ol" the rod 65, as shown in Fig. 2. In this figure the hopper arm is Shown at. the limit of its outward Inovement and the lay is on its Jfront center. 0n the return of the hopper arm t2 to its normal position following the replenishing operation, the rear end of the hook 67 readily posses over the end 69 ot the rod 65, and the parts are thereby returned to their normal position. Rearward movement of the upturned end G9 of tbe rod 65 is revented by a stop pin 74.

he upper or movable clamping jaw 54 is pivoted on a pin projecting outwardly from the arm 58. The upper clamping jaw is opened and shut at the proper times with respect to the lower elmnping ,inw by means ot a earn piece. 77 pivoted at T* on the arm 58. The upper end of the vaan piece 77 is provided with a sloty T9 wim-b is adapted to be engaged by a pin H1) pro jet-ting outwardly from the bracket Gi. Un the front edge of the earn pier-e l? i@ formed` a projection 82 which is adapted. when the clamping,r jaws are moved reni'- wurdly and the upper jaw is to be opined. t0 he moved into engagement with und to press against the upper end of the upwardly and forwardly projecting part of the movable clamping aw. On the rear edge ot the cam piece 7l is formed the projeetion 84, which is adapted when the upper clamping jaw is to clamp the tilling against the lower jaw, to be moved into engage ment with a leaf spring secured to the rear side of and projecting upwardly from the upper clamping jaw.

The Inodel of operation of the clamping jaws will no w be understood from a ronsideration of Figs. 1 and 4. As the tower end of the arm 58 bearing the clampingr jaws swings rearwardly toward the lay. by reuson of the outward movement of the hopper arin l1 on the indication of predetermined exhaustion of filling, the front. side of the slot 79 is forced against the front side of the pin 80, and thereupon the ram pieee 77 is oseillated eontra-eloekwise. and the rojeetion 82 is forced against the part 83 of the upper jaw 54, so that. the latter is oneillated in a direetion to be opened. During this movement of the cam piece 7T. the rear ward projection 84 thereon passes outof engugement with the leaf springr 85. as shown in Fig. 4.' The clanlping jaws are now in position to receiw the outgoing lillint; end 86 between them. During these movements the lav has been movin forward on the replenis ingv beat-up, andgby the time the lay has nearly completed its forward movements the outgoing filling end has been carried be tween the clamping jaws, as shown in Fig. 4, and the forward edge of a. boss 87 ou the lay has struck a. shoulder 88 formed on the rearward side of the lower end of the arm 5S. The continued forward movement ot the lay causes the arm 58 to be swung toward the breast beam and the rear side of the siot 79 to press against the rear side of the pin Si). so as to oseillate the cam ieee 7T in a clockwise direction and force t e projection 84 into engagement with the leaf spring 85. This closes the clamping jaws. By employ ing: the leaf spring 85. the upper jaw is prevented from rebounding when it is first closed on the lower jaw. The filling is thereby prevented from escaping'. lt will be observed at. this point that the luy does not move forward enough to push the arm 58 and the parts carried by it into normal po sition; other means is employed for this purpose. This means consists of a cam lever 90 p.voted at 91 on the bracket 61. A spring 92, one end of which engages the bracket 61 and the other end of winch engages the upper side of the cam lever 90, tends to press the rear end of the cam lever downwardly. Tw cam surfaces 93 and 94 are formed on `the/lower rearward end of the lever and are adapted to cooperate with a cam lug 95 projecting laterally from the arm 58. The engagement of the boss 87 on the lay with the shoulder-88 of the arm 58 pushes the latter forward far enough to force the cam hg 95 under the point 96 of the cam lever 90, and thereupon the force of the spring 91 is sufficient to cam the arm 58 vinto its normal position by means of the enga ement of the cam surface 93 with the cam ug 95. Incidentally, the cam lever 90 holds the arm 58 and the parts carried by it in normal position. As the arm 58 is swinging forwardly into normal position, the projection 84 is forced downwardly against the forward side of the leaf spring 85 so that the upper jaw may exert a greater pressure against the lower jaw. B this means the outgoing filling `end is firm y held. ln the same manner thatr the cam surface 93 in cooperation with the cam lug 95 acts to complete the return of the ann 58 to its normal posit-ion, the cooperationl of the cam surface 94 with the cam lug 95 acts to complete the movement of the arm 58 to its rearward position. The limit of the forward and the rearward movements of the arm 58 is determined by the engagement ofthe ends of the slot 9T .formed in the arm 58 with the pin 80.

The movement of the clampihg jaws toward the breast beam with the filling between them, by reason of the camming action 0f the lever 90, pulls the outgoing filling end through the slot 39 in the front wall of the shuttle box and substantially out of the shuttle box, as shown in Fig. 2. The part of the filling extending from the clamping jaws through the shuttle eye to the e'ected bobbin 99 will also be drawn throu h t e shuttle eye and' completely out of t e shuttle box, because as the lay beats backward` this part of the filling is severed immediately below thel lay. The thread parting means comprises two cooperating parter blades, a tixed upper parter blade 100 and a movable lower parler blade 101` The upper parter blade 100 is mounted at its forward end on a pin 102 rejecting laterally from the inner side of tie lower end of an arm 103 extending downwardly from the bracket 6l. This manner of i'nounting the upper parler blade is rovided so that it may be readily remove if replenishment is to be controlled by the detector mechanism, in which case there is of course no outgoing filling end to sever. In order that the rear parter bla or cutting end of the upper blade may be held in operative position and yet have a slight movement up and down to accommodate the slight up and down movement of the lower movable parter blade, a lateral projection L04 on the forward end of the upper parter blade is received in a notch 105 in the lower end of the arm 103. The cutting edge 106 of the upper parter blade is offset laterally and inwardly from the rear end of the blade and is adapted to cooperate with-the cutting edge 107 of the lower, movable partei' blade. This lower parter blade is fu crumed on a pin 108 fastened in a bracket 110 projecting downwardly and forwardly from the front of the lay. A spring 112 tends to press the rear or cutting edge 10T of the lower blade toward the lay. A lug 109 on the movable blade prevents it from striking the under surface of the lay, as shown in Fig. 5. This is so that the blade may not act as a clampl on the filling after it is severed. The upper fixed parter blade extends rearwardly toward the lay into the ath of motion of the movable e, and when the lay is on its forward center, the cuttinu edge 106 of the fixed parter blade is positioned considerably to the rear of the cutting edge 107 of the movable parter blade, as shown in Fig. 2. 'This is for the purpose of preventing the ejected bobbin from striking the cutting edge of the fixed parter blade. lt will be observed b an inspection of Fig. 2 that the lateral position of the fixed parter blade is such that the inner edge 113 thereof is in the path of the filling end extendin from the shuttle eye to the ejected bobhm 99. This filling end, therefore, must necessarily be closed upon by the parter blades as the lay beats back atter the replenishng operation. The `vielding mounting of the movable parter blade permits the fixed parter blade to ass between it and the under surface of the ay, and the spring 112 presses the cutting ed e 107 of the movable blade firmly against te under surface of the fixed arter blade, so that, as the thread is caught etween the two cutting edges it1 is severed. This severing of thethread takes place before the shuttle evacuates the shuttle box on the first pick after replenishment; consequently, when the shuttle is subsequently picked, the loose end of the filling is pulled through the shuttle eye because the end extending from the clam wing jaws through the shuttle eye is relative y short.

After the lay has beaten backward following the replenishing o eration, and thereby caused the severance o that part of the outgoing filling end extending from the clampinglr jaws through the shuttle eye to tlfe ejected bobbin, the length of filling extend;` ing from the clamping jaws to the parti means is pulled through the shuttle eye and hangs down from the clamping jaws, as indicated at 115 in Fig. 1. Ihe part of the outgoing filling end S6 extending from the clamping jaws to the salvage is supported until it is cut at the sclvage by `the temple thread cutter by a support 116 which extends forwardlyl from the lay. This thread support 116 is for the purpose of preventing the outgoing filling end from being chafed `and broken by the bunter 15 and by projecting points on the lay. A guard 117 located on the opposite side of the bunter 15 from the support 116 is provided for the same purpose. The support 11G also serves to guide the filling ends into the slot 39.

A brief recapitulation of the mode of operation of the various devices of the present invention in preventing the outgoing and incoming filling ends from being drawn or whipped into the shed will serve to make clearer their cooperation. The mode of operation of the thread clamping and parting mechanism Will be first described. It is assumed that the filling feeler mechanism has indicated predetermined or critical exhaustion of the filling and that, therefore, the hopper arm 11 has been oscillated outwardly to position tho transferrer latch 14 in the.path of the bunter 15. The striking of the transferrer latch by the bunter causes the insertion of the filled hobbin 45 into the shuttle 40, and the ejection of the critically, depleted bobbin 99 therefrom. The oscillation of the hopper arm 11 causes the hook? to swine the clamping jaws rearwardly tovard tie lay, at the same time opening them to receive the outgoing filling end, when the shuttle has reached the requisite point on its forward movement. When the lay beats up for the replenishing o eration, the boss 87 ther'cou strikes the s oulder 88 on the lower end of the arm 5%, carrying the clamping jaws, and starts the arm 58 forwardly toward its normal position. This forward movement of thc arm 58 causes the upper clamping jaw 5l to close upon the filling. and tliereaftci the action of the cam lever 90 under the influence of its spring 92, completes the return morement of the arm 58 and the clamping jaws to their normal position, and. at the same time, forces the upper jaw more tightly against thc lower jaw so that tluoutgoing filling end will c firmly held. .\ftcr the replcnishinpr operation takes place. thc lay beats back. and during this backward morement of the lay. that part of' thc fillingr cnd extending from the clamping jaws through the shuttle eye down to the ejected bobbin is severed immediately below the lay by the cooperative action of the thread parting blades lINl and ltll. The part of the out going filling cnd extending from tlu sclrage to the clamping jaws is tlicrcal'tcr held until it is severed al the selvago by the temple thread cutter 50. The filling end is then held by the clamping jaws until the next replenisbing operation. While the lay is retreating after the replenishing operation, the incoming filling end 46 extending from the hopper to the newly inserted bobbin is caught under th'eupturned point 35 of the upper part of the front box wall and is drawn down into the slot 39, so that the intoxing filling end will be held in position to e (.rawn down into the threading block in the Shuttle.

The nature and scope of the present invention having been indicated, what is claimed as new is 1. A loom having, in combination, a lay, a self threading shuttle having an eye in its front side, weft replenishing mechanism, and a shuttle box at Vthe replenishing end of the lay, said shuttle box having provision whereby as 'the shuttle is picked following the replenishing4 operation,A the incoming filling end is guided down into the plane of tfre shuttle eye.

2. A loom having, in combination, a lay. weft replenishing mechanism, and a shuttle box at the replenishing end of the lay, said shuttle box having its front wall composed of two parts. the lower part bein secured to the shuttle race of the lay an the upper part being supported at the inner end of the shuttle box only wherebv the chances of the filling being drawn down into the filling block are increased, and the chances of a real misthread are decreased.

3. A loom having,in combination, a lay,

va shuttle, weft replenishing mechanism, and

a shuttle box at the replenishing end of the lay. said shuttle box having its front wall composed of two'parts, the upper part being separated from the lowerpart by a narrow slot and supported at its inner end only, and having its outer end so arranged that as the lay beats backward following replenishment, the incoming fillin end is caught and drawn down into the s ot.

4. A loom having, in combination, a lay. a shuttle, weft re lenishing mechanism, and

a shuttle box at t e replenishing end of the lay. said shuttle box having in its front wall aL longitudinal slot lower than the top of the shuttle. and said shuttle box having pro:

vision for engaging the incoming fillingl end on the backward beat of the lay following replenishment and drawing the filling down into the slot.

loom haring, in combination. a lay, weft rcplcnisliing mechanism. loom control- Vng devices. :i Ashuttle box at thc replenishing end of' thc lar hariufc` an open ended slot in its front `rali. and means operating on the roplcnisliin;r |icat-up of the lav to clamp thil outgoing filling end at a point outside the shuttltl in'nncdiately adjacent. the shuttle eye and draw the filling end intact from the salvage to the clamping means toward the breast beam.

6. A loom having, in combination, a lay, weft replenishing mechanism, loom controlling devices, a shuttle box at the replcnishing end of the lay constructed to permit the filling to be drawn therefrom, thread clamping means arranged to clamp the outgoing filling end at a point outside the shuttle immediately adjacent the shuttle eye and draw it, intact from the selvage to the clamping means, toward the breast beam on the replenishing beat-up of the lay, and means for severing the outgoing filling end between the shuttle and the ejected bobbin.

7s A loom having, in combination, a lay, weft replenishing mechanism, loom controlling devices, a shuttle box at the replenishiug end of the lay having its front Wall so constructed that when the shuttle is boxed the eye of the shuttle is beyond the outer end of the front wall, means for clamping the ont oing filling end between the outer end of t e front Wall of the shuttle box and the shuttle eye, and means for severing the filling between the clamping means and the ejected bobbin. i

8. A loom having, in combination, a lay, a shuttle, wel-'t replenishing mechanism, loom controlling devices, a shuttle box at the replenisjhing end of the lay, a single means arranged to clamp the outgoing illing end only at a point outside the shuttle immediately adjacent the shuttle eye and draw it toward the breast beam, the filling being intact from the salvage to the clamping means, said" shuttle box having provision whereby the outgoing filling end is permitted to be drawn therefrom intact, and means for severing the filling between the shuttle and thc ejected bobbin.

l). A loom having, in con'ibinntion, a lay, a shuttle, weft replenishing mechanism, loom controlling devices, a shuttle box at the `rcplenishing end of the lay having its front wall so constructed that when the shuttle is boxed the shuttle eye is beyond the outer end of the shuttle box, a single clamping means arranged to clamp the filling only at a point between the outer end of the i'ront Wall of the shuttle box and the shuttle eye, means for severing the filling between the clamping means and the ejected bobbin, and means for severing the filling at the salvage.

I0. A loom having, in combination, a lay, a shuttle. weft replenisbing mechanism, loom controlling devices. a shuttle box at the replenishing end of the lay having an open ended slot extending throughout the length of its tron! wall, clamping means for engaging the outgoing filling,r end and drawin,r it through the slot, and means for severing the filling at a point between the shuttle and the ejected bobbin.

11. AY loom having, in combination, a lay,

'block in its top side and a shuttle, weft replenishing mechanism, loom controlling devices, a shuttle box at thc replenishing end of the lay having its front wall composed of tivo parts separated by a narrow, lon itudinally extending slot, means plenishment and direct it through the slot.

12. A loom having, in combination, a lay, weft replenishing mechanism, loom controlling devices, and a thread clamping mechanism comprising a bracket, an arm pivoted thereon, a clamping jaw fixed on the arm, a movable clamping jaw pivoted on the arm, a cam piece having a slot, a pin in the bracket engaged by the slot, and means connected with the loom controlling devices for swinging the arm toward the lay, the arm being swung toward the breast beam by the lay, said movable jaw being opened by the cam piece'as the arm swings toward the lay, and shut by the cam piece as the arm swings toward the breast beam.

13. A loom having, in combination, a lay, weft replenishing mechanism, loom controlling devices, and a thread clamping mechan ism comprising a bracket, an arm pivoted on the bracket, a clamping jaw fixed on the arm, a movable clamping jaw pivoted on the arm, means for opening and shutting the movable clamping jaw, means connected with the loom controlling devicesfor swinging the arm toward the lay, the arm being swung toward the breast beam by the lay, and a cam lever for completing the .movement of the arm toward the lay and its movement toward the breast beam.

14. A loom having, in coiibinatiorna lay, a self-threading shuttle having a threading an eye in its front replenishing mechanism, and guiding the incoming the plane of the shutpicked following the Side, weft meansron the lay 'for filling end down into tlc eye as the shuttle is replenishing operation.

l5. A loom having, in combinatioma la weft replenishing mechanism, and a Shutt e box at the replcnisbing end of the lay having n two-part front Wall to provide a Slot for the incoming weft the upper part of which is, adjuslably supported at its inner end op the inner end of the shuttle box. V

lli. loom having, in combination. a lay, weft. repleuishing mechanism, a shuttle bei at the replenisliing end of the lay havin a" t'ront wall provided with a longitudinal ks ot, extending t n-oughout the, length of the wall, and a support secured to the lay to guide filling ends extendin outwardly from the the intact incoming filling end 'from the salvage and supporte at thgsir omer ends bebox.

youd the from box wall, into the Slot on the 1S. A loom having, in combination, a lay,

forward beat, of the lay. a shuttlv box, a Self-threading Shuttle, having l5 5 17. loom having, in combination, a luy7 an oye in ith` front faille, weft ruplenishing weft repenishing nwchausm, und n shuttle qlieumnism, und means on tho luy for guidbox at the replenishing end of the lay havmg the incoming lling end into the shuting a .wo-puxt-front wall the upper part of tle box :substantially on the plano of the which is supported only at the roar of the Shingle eye during the pick following ren 1o box, said front wall of the shuttle box huv- PlenlSllmellt f ing provision for permitting the escape of JONAS NUK-THROP.

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