US1639776A - Loom for weaving - Google Patents

Description

, v I 1,639,776 Aug. 3 1927- I E. KELNER LOOM FOR WEAVING Filed June 17, 1924 3 Sheets-Sheet 1 F. F 2 F BY: w ATTmzNg-Y Aug. 23, 1927. E. K'lLNER LOOM FOR WEAVING Filed June 17, 1924 2 sheets-sheet 2 INVENTORf EDGAR Rum/1? ATTORNEY Patented Aug. 23, 1927.

UNITED STATES PATENT OFFICE.

EDGAR KILNER, OF MANCHESTER, ENGLAND.

LOOM FOR WE AVIL IG.

Application filed June 17, 1924, Serial No. 720,534, and in Great Britain'June 28, 1923.

This invention relates to improvements connected with looms for weaving and consists in the arrangement and construction and application of a shuttleless weft delivery device for one Or two looms coupled with slight necessary alteration to parts of existing looms when the apparatus is applied thereto. In some cases two looms and the wefting apparatus may form one unit.

It is well known that, in most looms and more particularly what are known as broad. looms, the picking device for the shuttle, or weft guide, requires a considerable portion of the power used in driving a loom; in my invention 1 entirelydiscard the picking device and arrange atone side of one loom, or between two adjacent looms, a traversing device adapted to pass across the running board first of one loom, and then the other, which traversing device will be suitably driven and will carry at its ends, fingers or clips to pick up the end of the weft and carry it across the running board, leave it there, return and bring another end and so on. V] hen one end of a device for two looms is carrying the weft of one loom, the other end will be passing across the other loom running board to collect an end thread or pick. The traversing device may be one rod to serve two looms alternately as before mentioned, or may comprise two rods one for each loom in which case it will be possible to cause the same to operate at different speeds, and so weave pieces of varying width in each loom. No picking motion, and no weft guides operating by a picker, are re quired, but when the traversing device is operating across the running boards, the usual movable lay on batten must be arranged to dwell. During the motion of the batten the traversing device will move with the same and be suitably operated to this end.

I make no claim for excessive speed as to number of picks per minute but I may employ an endless weft and select or pick up any desired weft of a number. There is no delay in the running of the loom owing to shuttle changing and therefore the output will be steady and consequently will equal with a slow pick loom the output of a fast loom. The whole apparatus may run with but little attention for a considerable time and it is particularly adaptable to. what is known as the broad-type ofloom. There will be but little waste of yarn, and the distance the yarn= is carried by the traversing fingers or the like may be varied. The power now required to drive one picker motion should be more than sufficient to drive the traversing weft feed motion for two looms, therefore the saving effected on this operation alone will be considerable.

In describing my invention in detail reference is made to the accompanying sheets of drawings in which Fig. l is a front elevation illustrating the application of my invention to two looms,

the looms being shown in dotted lines;

Fig. 2 is a partly sectional side elevation taken approximately on line 22 of Fig. 1;

Fig. 3 is a detail side view of the mechanism for transmitting motion from one rack bar to the other; Y Figs. 4. and 5 are detail side views of a stop member hereinafter described;

Fig. 6 is a detail side view of another stop member forming part of the invention;

Figs. 7 and 8 are sectional plan views of a gripper device forming a part of the invention, the device being shown in different positions in the two figures, Fig. 8 showing also a fragment of fabric; Fig. 9 is a front elevation of the gripper ievice shown in Figs. 7 and 8, the device being shown in all' of these figures broken away from the rack bar which carries it;

Fig. 10 is" a cross-section taken approximately on the line lO-10 of Fig. 9;

Fig. 11 illustrates a development of a lead cylinder forming a part ofthe invention;

and

Fig. 12 is a sectional plan view illustrating in full and dotted lines respectively differentpositions of the gripper mechanism relatively to the fabric being woven during the passage of the gripper mechanism from one side to the other of said, fabric.

The same character of reference designate the same parts in the dilferent figures of the drawings. V

Referring to the drawings, a pair of looms designated'generally by the reference char acters L, L. are erected in longitudinal alinement with each other and spaced apart one from the other. Between the looms L, L, is mounted for rotation a cylinder or drum C, the surface of which is provided with a pair of oppositely disposed lead grooves T, each of said grooves extending in the form of a V from one end of the cylinder to theother and communicating at each end thereof with a groove T encircling the shaft ofcylinder C are a T of the. cylinder,

' a second table or slideway N,

. bar R.

. stud shaft having at its opposite end the end of the cylinder, as shown in the development of the cylinder illustrated in Fig. 11. The cylinder is rotated by means of a gear C which receives motion from any suitable source and is in mesh with a pinion C carried by the cylinder. The points of communication between the lead grooves T and the grooves T are eachguarded by a pivoted switch gate T the gate at one juncture being pivotally connected by a rod T with the other gate at the same end of the cylinder whereby when one gate is open the other will be closed as shown in Fig. 11.

Supported for oscillatory movement on pair of stand ards or brackets B, one at each end ofthe cylinder, whichbraekets are adapted to be oscillated by a link connection B from an eccentric 13. carried by a shaft B? (see Fig.

' 3) i A similar pair of brackets 13* are pivotally mounted one at the outer end of each cm, L, L-

, Supported onthe braclretsB, Br and dis posed above the cylinder C is an elongated table .or slideway N, on which is mounted for reciprocatory motion. a rack bar it which lS-PTOVlCLGCl with a depending stud S (see Fig. 2) that passes through a slot in the table N and engages the guide grooves whereby when the cylinder is rotated, ow ng to the engagement of its; groove with the stud S the racl: bar R will be reciprocated on the slideway N, in a manner, which will be readily understood.

Supported on the brackets B at a point above and to the rear of the slideway N is on which is mounted for reciprocation a second rack Beciprocatory motion is. transmit ted tothe rack .bar R from the rack bar R, and for thispurpose a frame A is secured tothe bracketsB (see 2) in which frame is mounted for rotation a horizontal shaft A having secured at one end thereof a gear Ain mesh with the rack bar R and at its opposite end a bevel gear A in mesh with a bevel pinion A mounted on a vertical shaft A supported in the frame E8, the said vertical shaft also carrying a bevel gear A inmesh with a bevel pinion A secured atone end of a horizontal stud shaft A" mounted for rotation in frame A*, said A in mesh, with the rack bar Ttwill thus be seen, that during rotation. of the cylinder C, owing to the stud and groove connection rack bar R, the latter will be caused to reciprocate, and. by means of the gear train A,

A, A A A and A, such reciprocating motion is transmitted to the rack bar It.

The vertical shaft A is preferably thread ed through the gears A and. A3, as shown in Fig. 3 thereby to permit adjustment.of'

said gears as to height, the gears being of fabric.

a gear I between said cylinder and the,

keyed in their adjusted positions on the shaft. These gears may also be interchangeable thereby to permit the device to be used in the weaving of different widths -As illustrated herein, bar R carries at each end thereof a gripping device for engaging, cutting and lay- .the weft threads, as hereinafter ere plained. This gripping device is shown in detail in Figs. 7 to 12 and comprises a head G formed at the end of rack bar B, said head. being recessed at its outer end to re-' ceive the hinge or Lshaped end of an arm G, which is pivoted in the recess of the headand has secured thereto a pinion G said armbeing adapted to be swung on its pivot from a position parallel with the head G as shown in Figs. 7 and 12, to a position at right angles to said head ,as gshown in Fig. 8. For cooperation with the pinion G to swing the arm G, a rack barGr is disposed and guided in a longitudinal slot formed in the head G, as shown clearly in l ig's. 7, 8 and 12, said rack bar being provided its inner end with a lug G a coil spring G encircling the portion of therack bar adjacent to said lug'and being compressible between the lug and a shoulder formed at the junction of the head G with the rack R, and which spring normally retains the arm G in parallel relation to the head G.

Mounted for sliding movement longitudinally in the arm G is a plate or block G, the end of which extends somewhat beyond the end of the arm and which plate is provided with an elongated opening the top wall of which is inclined toward the free end of'the arm to form a cam surface G for the purpose hereinafter described. The plate G is also provided at its inner end with a lug G projecting therefrom for operating the plateas hereinafter described. Supported on the arm G at right angles thereto is a lower gripping jaw G, the supporting or stem portion of which passes transversely through the elongated opening in the plate (3, and pivoted at G to said lower jaw is an upperjaw G having a rearwardly extending portion or lever G which projects into said opening, the top surface of which lever is in contact with the edge of the top wall of the opening the arrange ment being such that when the portion G is in thewider part of the opening thejaws will be .closed together and whenthe plate G is movedinwardly toward the pivotof the arm G the inclined wall G of the opening will depress the jaw lever G and swing the upper jawawa'y from the lower jaw, thus opening the jaws. Attached to the lower jawfin parallelism therewith is a knife G which, when the jaws are closed together on a thread, will sever such thread.

Suitably disposed on the teble N hereinthe rack before described aretwo pair of stop members F and F, one pair for each loom, said members being preferably mounted for adjustment longitudinally of the table. In practice the outer stop F is pivot-ally mounted and is rovided with a spring F for returning t e stop to its normal position when swung away therefrom. A stud F is threaded through the stop F and adapted to contact with the usual swinging batten D, which during its operation will swing the stop to the position shown in Fig. 5. The batten is indicated herein only in dotted lines because it is awell known member common in looms and forms no part ofmy invention. The stop member F is similar to the member F except that it is not pivoted, since there is no necessity for changing its position. i

The operation of the device is as follows: Assuming that the apparatus is about to start from its inoperative position indicated in Fig. 1. In this position the gripper arm G at each end of the rack bar R rests parallel with the head 6-. while the plate G is in its innermost position in the arm so that the inclined portion G of the wall of its opening is in engagement with the lever G of the upper jaw, so that the jaws are held open. Fig. 7 illustrates in plan View the relative position of the parts of the gripper at this time. Now, upon rotation of the cylinder C in the proper direction. the lead groove T therein will track the stud S toward the right, thus causing the rack bar R to move toward the right, and by means i of the gearing A, A, A A A and A the rack bar R will also be moved toward the right, the open gripper jaws at the right hand end of the rack bar passing through the shed until it arrives beyond the right hand edge of the fabric being woven. On arrival at this point the open jaws. G and G *ill straddle the right hand endof the.

weft thread VI between the fabric and the bobbin, as shown in Fig. 132. At this point, however. the lug G of the plate G has come into contact with the stopF or a'lug G carried thereby, so that as the rack bar R continues to move to the right the plate is caused to slide in the arm G, thus carrying the wide portion of its opening into alinement with the jaws and permitting the latter to close on the thread, whereupon the .znife G tsevers the thread while the jaws G. G grip the loose end of said thread. The movement of the rack bar Rto the right is completed just as the thread is severed. In

the meantime the stud S has passed from the right lead groove T into the groove T at the right hand end of the cylinder. thus permitting a certain dwell while the thread is being cut and gripped, whereupon the stud enters the left lead groove and the travel of the rack bar R toward the left commences. The travel of the gripper mechanism toward the left is illustrated in F 7 8 and 12. At this time owing to the action of the eccentric B hereinbefore described. the bracket B is caused to swing backward on its pivot just as the rack bar commences its return or left hand movement so as to carry the rack bar and the gripper mechanism into approximately the position shown in dotted lines in Fig. 12 with relation to the fabric. During all of this time the arm G has remained parallel with the head G. As the rack bar R approaches the limit of its left hand motion, however, the lug G at the inner end of the arm operating rack G comes into contact witha lug G see Figs. 7 and 8) carried by the stop member F, so that upon continued movement of, the rack bar R toward the left the arm operating rack G? is held against movement with the head G and thus rotates the pinion G causing the arm G to swing away from the head into the position shown in Fig. 8, the spring G being in the meantime compressed between the lug G and the head G. This swinging action of the arm occurs as soon as the ewe carrying the end of the weft thread have arrived at the left band edge ofthe fabric. In other words,as soon as the closed jaws arrive in a position slightly left of'the last warp thread of the fabric, there is no further movement of the jaws toward the left, although the head G continues its movement, because at that time the lug G has come into contact with the lug G of stop member F and the swinging movement of the arm G has commenced. so that at the end of the movement of the rack bar R toward the left the jaws are approximate ly in the position shown in Fig. 8 with reiation to the fabric, the eccentric B having in the meantime swung the bracket B back to its normal position thus causing the jaws to place the weft thread in approximate parallelism with the threads previously laid. At the moment when the arm G arrives in a position at right angles with the head G, the outer end G of the plate G contacts with a cam surface G disposed on any convenient portion of the frame of the loom, as inclicated in Fig." 8, which contact causes the plate G to slide inward in the arm G. thus causing the inclined cam portion or wall G to engage the jaw lever G and open the jaws thereby to release the weft thread. At this time the stud S has entered the annular groove T at the left of the cylinder and dur ing the dwell thus caused the usual batten operates to press the thread back into its proper position in the fabric. By the time this has beeiraccomplished, the stud is again entering the right hand lead groove T, whereupon the mechanism again begins its movement toward the right, and as the rack bar starts to move toward the right, the tenlliv GFvexerts itself on the varm- G and causes it to Withdraw Within the head G", thus rotating the pinion G and swinging the arm G back into parallelismjwith' the head'G, the jaws G, G remaining open While the nechanismtravels towards "the right in the manner above described.

The operation above desc ed takes into consideration only one loom; Where the device is used in connection with two looms, as shown herein, the above describedmotions of the gripping mechanism ta replace in reverse sequence inconnection with the respective looms. In otlieriyo'rds, When the ipj? device at one end of the rack bar carry rig a'thread iromthe outer toward the inner edge of'the fabric in oneloom, the gripping device at the opposite 'eiid o'i the rack bar is travelling emptyirom' the inner "outer ed,g ;e"o'l the'i 'abric inthe sion. of spring operating rack toward the other loom, and vice versa.

1. The combination with a loom, of a traversing member movable to and fro across the running board off the loom, means carried by said member for automatically gripping, and cutting a thread and carrying the same across the rnnning board, of the loom, and means for operating said traversing member. v

2. The combination with a loom, of a \ye'i t traversing motion" comprising a cylinder mounted for rotation, a' reciprocable rack disposed adjacent to said cylinder,v

cooperating means carried by 'the cylinder and rack for reciprocating the latter in response to the rotation of the cylinder, second reciprocable rack adapted to nove to and fro across loom, means between said racks for transmitting motion from the first rack mim second, and means carried by said second rack for automatically gripping, carrying and releasing a Weft.

3, The combination With a loom, of a Weft-traversing motion comprising a cylinder mounted for rotation adjacent to said loom, "a bracket mounted for pivotal moveaxis of said cylinder, a reinent about the ciprocable rack carried by said bracket' a nd the running board of the ireea s disposed adjacent to the cylinder, cooperatin; means car ie'd the cylinderandrack r reciprocat ng the latteif in response to the rotation of the cylinder, a secondrecipi ocable' rack adapted to move to and fro across the running board of the. loo'm, meansbetween said racks tt'or transmitting me 16 1* from the first rack to the second, means for rockingrsaid bracket on its pivot thereby to carry said racks toward and away 'ifrorn the loom at predetermined points in the reciprocal movement of the i ia k i v 7,. f4. The combination with a pair of looms, of a Weft-traye 'siiig motion compif n'g a cylinder disposed between said looms} and mounted for rotation, a reciprocable rack disposed aeentto said cylinder, cooperatin'g means c; the cylinderfand rack for reciprocating the latter in response to therotation' of the cylinder, a second reciprocable rack across the running boards of bothof said looms, means between said racks for ransinitting mot-on from the rack to the second, and means at each end of said seeond'i'ack for automatically gripping, carryand releasing a Weft for each of said looms.

The combination With a pair of looms, oi? a Weft-traversing motion comprising a cylinder disposed between said looms and mounted for rotation, a reciprocable rack disposed adjacent tosaid cylinder, cooperating means carried by the cylinder and rack for reciprocating, th'e l atter in response to the rotation oi the cylinder, a second reciprocable rack adaptedto move to "and fro across the running boarcs' o'i both of said looms, means between said racks for transmitting motion from Llie first rack to the second, ineans at each end of said second rack for automatically gripping, carrying and releasing Weft for each of said looms, and stops disposed in the path of'rnovem'ent ofi said gripping members for operating the same.

In testimony whereof I have signed my name to thls specificat on.

EDGAR KILNER.

adapted to moy 'e'to' and fro

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