US2050563A - Looper - Google Patents

Description

Aug. 11, 1936. DE sPAlN 2,050,563

LOOPER 7 Filed Oct. 15, 1954 8 Sheets-Sheet 1 7720mm 1%. De 5;) ap'za,

Aug. 11, 1936. T. H. DE SPAIN LOOPER Filed Oct. 15, 1934 s Sheets$heet 2 mum minus/7512a Spa LIL,

1936- T. H. DE SPAIN I 2,050,563

LOOPER Aug. 11, 1936.

"T. H. DE SPAIN LOOPER Filed Oct. 15, 1934 8 Sheets-Sheet 4 Aug, 11, 1936. H. DE SPAIN LOOPER Filed 001;. 15, 1934 8 Sheets-Sheet 6 {His Gamma/13S v Aug. 11, 1936. T. H. DE SPAIN LOOPER 7 Filed Oct. 15, 19-34 8 Sheets-Sheet 7 7 /7/0772 as bfDe Spam Aug. 11, 1936. T. H. DE SPAIN LOOPER Filed Oct. 15, 1934 1 8 Sheets-Sheet 8 gwuc/wbo t 7 /Z077za5 19. .06 Spam,

Patented Aug. 11, 1936 UNITED STATES PATENT OFFICE 19 Claims. (Cl. 11225) This invention relates to improvementsin sewing'mechanisms and, particularly, to sewing machines of the looper type.

In Patent No. l,894,885,"dated January 1'7, 1933, there is illustrated and described amachine for producing the two-thread interlocking stitch, especially designed for uniting knit goodson dial loopers. One object of the present invention is to simplify the construction of the sewing mechanism and adapt it to dial loopers, so that it may be said to constitute,-more or less, an attachment for dial loopers.

Another object of the invention is to provide a sewing mechanism in which a'two-thread interlocklng'stitch is produced with a looper and a needle as distinguished from the use of two needles.

More specifically, the machine of the present invention comprises a work support constituted, in the present instance, by a circular series of work impaling points, on a rotatable dial, with a looper and a thread needle positioned at-opposite sides of the said series of impaling points. The thread-carrying needle, with itsthread, is projected and retracted through work on the points and the looper is adapted to pick off the needle, each time the latter is advanced, a loop of the needle thread and retain it until 'the next advance of the needle, at which time said loop of needle thread, as well as a loopoflooper thread is placed-around the needle. Uponretraction of the thread needle, the loop of needle thread is displaced from the needle before the needle is withdrawn from the work, but the loop of looper thr'ead'is drawn through the work duringthe retraction of the needle and released therefrom before the next succeeding advance movement of the needle. needle is provided not only with a point for its own thread, but with a recess or hoo'k in which the loop of looper thread is laid, the looper thread being retained in the recess or hook by a latch, which may be opened and closed by engagement with the work on the points. To prevent the loop of looper thread being accidentally displaced in the needle, the needle is provided with an undercut bottom surface and a guide extending from the hook portion to said undercut portion, whereby one side of the looper thread loop will be guided under the point of the needle. In order that the looper may properly deliver the loop of its own thread, and, also, properly engage and retain aloop of the needle thread, the novel form of looper drive has been provided as indicattdin the objects of the invention.

To carry out this operation, the.

As also intimated, it maybe desirable to have each thread composed "of a plurality of ends. Hence, the stop motion mechanism has b'een designed-to be rendered operative upon breakage or depletion :of-any one of said ends, whether it be one of'the'ends forming the looper thread or one of thoseconstituting the needle thread.

As to the novelty of the jack "arrangement, it has been customary to provide a series of jacks which areadapted to move into and out of the With these and other objects in view, the 'in- 20 vention consistsin certain details of "construction and combinations and arrangementsof parts, all as will hereinafter bemore fully described 'and the *novel features thereof particularly pointed out in the appended-claims.

In the -accompanying "drawings, illustrating a preferred embodiment of'the present invention-,--

Figure 1 is a top plan View of a dial looper with the'sewing mechanism and stop motion as-- sociated therewith;

Fig. 2 is a vertical sectional view on the line 2-2 of Fig. 1;

Fig. 3 isa horizontal sectional-view 'on'theilin'e 33 of Fig. 2;

Fig. 4 is a vertical'sectional view on'the line 4-4 of Fig. 2;

Fig. 4a. is a similar view for :illustrating the clutch construction of the stop motion'rm'echanism, which clutch construction would normally appear at the right-hand end-of Fig. '4;

Fig. 5-is 'a-detail view of a cam plate of the looper drive connections and its associated parts for oscillating the looper;

Fig. '6 is a View illustratingthe 'camfor reciprocating the looper;

Fig. *7 is 'a perspective view'of the detectorand trip devices of the stop motion mechanism;

Fig. 8 is an enlarged sectional view illustrating J the mountingof the detectors on the rock shaft of the stop motion mechanism;

Fig. 9 is a detail viewshowing the operative and inoperative :positions of that .member of the stop motion mechanism which isactuated by the drive shaft of the machine for rendering the machine inoperative;

Fig. is a side elevation, enlarged, of the thread needle;

Figs. 11 and 12 are top and bottom views, respectively, of the needle;

Figs. 13 and 14 are transverse sectional views on the lines l3--|3 and I l-l4, respectively, of Fig, 10;

Figs. 15 and 16 illustrate the needle being advanced and retracted, respectively, to work on the work impaling points;

Figs. 17 to 22, inclusive, constitute a series of views illustrating the several positions of the thread needle and looper during the formation of the stitch produced by the present machine.

The machine illustrated in the present instance is the type commonly known as the dial looper and while the various operating parts may be arranged in various ways, so far as the principal features of the present invention are concerned, it is preferred that the bed plate 3! of the machine be carried by an overhanging arm 38, extending from a base plate As is common in the art, this bed plate has secured thereon the work supporting or impaling points or pins 32. Points 32 are rigidly secured by segmental sections 33, in ring-like form, in an annular member 34 adapted to revolve on the bed plate 3i. Rotary motion may be imparted to the series of points from the main drive shaft 35 through a shaft 35 on which there is a gear 3'! meshing with a gear 3! on a shaft 38. A worm 38 on shaft 38 meshes with a gear 39 on a shaft 43 carrying a gear 40 which engages a ring gear 34 on member 34. Preferably, the points 32 are driven constantly or with a continuous motion, as distinguished from an intermittent movement, although this is not necessary.

As before pointed out, the present two-thread interlocking stitch is produced through two instrumentalities, i. e., a looper and a thread needle. The thread needle, shown at 4|, is carried by needle arm 42 extending from a U-shaped bracket 43 mounted for a rocking and sliding movement on a stub shaft 44 projecting from the overhanging arm 30. The rocking movement which advances and retracts needle 4| through loops of fabric on points 32, is imparted to the needle by means of an eccentric 45 on the main drive shaft 35, said eccentric being connected to the bracket 43 by a connecting rod 46, the latter being adjustable as to length to vary the throw imparted to the needle. Due to the movement of the points circumferentially of the bed plate during the time the needle is engaged in loops on said points, it is also necessary that the needle have a lateral movement. Hence, the ability of bracket 43 to slide on shaft 44, this sliding movement of the bracket being effected by means of a lever 41 pivoted at 48 and carrying a cam roller 49 at one end engaging in a cam slot 50 in a wheel 5| on the main drive shaft. The opposite end of said lever 41 is pivotally attached to the bracket 43. This arrangement is quite similar to the mechanism for oscillating and imparting the step-over movements to the needles in the prior patent before referred to. The looper'shown at 52 is journaled for a rocking or oscillatory motion in a bearing block 53 formed on the end of an arm 54 pivoted at 55 on the bed plate 3|. What may be termed the shaft portion 56, of the looper, carries a disc 51 on which there is a pin or cam member 58 (see Fig. 5)

working in a cam slot 59 in a plate 60 which is adapted to be reciprocated in said bearing block by means of an eccentric 6| on the main drive shaft, said eccentric being connected to the plate 66 by suitable adjustable connections indicated at 62. A pin 63 projecting into the recess in the bearing block for disc 5'! acts as a stop to limit the movement of the disc. As will be apparent, movement of the plate 60 to the left, as viewed in Fig. 5, will cause the pin 58 on disc 51 to be moved down into the lower portion of slot 59 and thus effect a partial rotation of the disc and the looper in a clockwise direction, and restoration of the plate 50 from such assumed position to the position in which it is actually shown in Fig. 5 will effect a reverse movement of the looper. The looper, in performing its proper functions in connection with the thread needle, must also be moved laterally of the needle and for this purpose, shaft 35 has mounted thereon a cam 64 whose periphery engages the walls of an opening in a plate Said plate may, as shown, constitute one wall of a box-like construction, one other wall of which is provided with a slot 66 through which the shaft 35 extends. Said plate, or box-like construction, also has pivotally attached thereto one end of a link 6'! whose other end is likewise pivotally connected as at 68 to the bearing block 53. Rotary motion of cam 64 results in reciprocatory motion of the plate or the box of which plate 65 is a part, and this reciprocatory motion is transmitted by link 68 to the bearing block 53, the latter rocking on its pivotal center 55 so as to move the looper laterally of the thread needle.

The purposes of these several movements of the thread needle and looper will be apparent from inspection of Figs. 17 to 22, wherein the formation of the stitch is illustrated for the purpose of showing the several positions occupied by the looper and thread needle. thread 4| and the looper thread 52 are fed to those instrumentalities from a suitable source of supply through proper guides and tensioning devices. With the needle and looper in the positions shown in Fig. 17, those members are actuated as follows: The needle 4|, as indicated by the arrow, is advanced along the work point between jacks b and c and, after passing through the fabric on the work points, it is projected through a loop of needle thread which, at that time, is held on the looper 52, (Fig. 18). The forward motion of the needle is carried to the point shown in Fig. 19 and, due to the rotation of the looper in the direction of the arrow, in Figs. 17 to 19, the loop of needle thread is dropped off the looper and deposited around the needle. After this has been accomplished, the direction of movement of the needle and looper is reversed. as shown by the arrows in Fig. 20. In other words, as the needle is retracted, the looper is rotated in an opposite direction and also moved laterally so as to lay a loop of looper thread over and around the needle. This loop of looper thread is retained on the needle, as will be later described, so that it is drawn through the work, as shown in Figs. 22 and 17. The timing of the several parts is also such that, immediately after the loop of looper thread has been laid around the needle, the looper picks off from the needle 2. loop of needle thread,

as shown in Fig. 21, so that when the parts again assume the position shown in Fig. 17, there is a loop of needle thread held on the looper to be placed around the needle on the next succeeding movement of the needle and a loop of looper thread around the needle which will be released The needle from the needle the next time the; needle: is; 811* vaznced: and. retracted. Alt-ten the looper has; pickedoff; so to speak, from the needle, the. loopof needle. thread, its movement laterally of. the.

'1 needle is again reversed. as indicatedzin Fig,.22-,.

so that when the needle is; again advanced through the work, the loop of needle: thread: on, the. looper will be sov positioned with: respect. to. the needle that the needlepoint will be protected: therethrough, as shown in Fig. L8; In: other words, the looper must be reciprocated, laterally of the needle so that in one position it. would'be at one:- sideof the needle to pick up the loop of the. needle thread and, in the other position, itv

I illustrated in detail in Figs. 1-0 to 14. The shank of the needle 41 has an elongated slot 69extending longitudinally thereof and between said slot. and the eye 10 of the needle, there is a recess the needle shank forming a hook '|I.. Pivoted in the slot 69-i-s a latch 12 for retaining in the hook recess the loop of looper thread so that the latter will be drawn through the work when the needle is retracted. As shown. in Fig. 15, the latch 12- is opened by engaging with work. on the impaling pins when the needle is advanced, whereby the loop of. looper thread may be laid in the hook recess by the-looper and, as the needleis retracted (Fig. 16),, the latch will be closed over the hook recess. The under surfaceof the needle, adjacent the eye, is undercut, as at l3; and extending, from this undercut portion 13 to. therecess. of hook H, is a groove or guide T4, the purpose of which is to insure one side of. the loop of looper threadpassing beneath the needle when the'la-tter isstepped over or moved laterally after being withdrawnfrom the work andbefore it is: advanced to pass through the loops of fabric on the next impaling point. In other words, after the needle has been retracted from the work, say from loops:

, on the point between jacks w and b in Fig. 17,.

it is stepped over or moved laterally so as to register with loops on the point: between jacks b and If, during this step-over movementmthe left-hand side (as viewed in Fig. 17;) of thellooper 1 thread loop should pass over the upper. surface needle thread as it is fed to and through the eye of the needle.

In the textile industry, as well as in other arts, threads are formed of a plurality of filaments orstrands, commonly termed thread ends- In other words, anumber of thread ends constitute a thread, the size of the thread depending upon the number of so-called ends used therein. For this reason, there is illustrated herein a stop motion mechanism especially applicable: to ma,- chines wherein a plurality of thread ends; are

fed; separately-to each. of the: sewing. instrumentalitiea. the: several. ends. to; each instrumentality entering the work as a single thread. Referring to;-Figs; 1,, 2 and '7. to. 9... it will be seen that therearena. plurality (three; in the presentinstance); of tensioning: devices .15 for a corresponding number ofthread. ends that. may be: fed to. the needle by necessary guideelements; onesset. of whichis illustrated: at 16, Likewise, there are-1a plurality of tensioning; devices. 1:1; for a-plurality of ends that maybe f toqthe. looper and constitutethe looperthreadtthese: looper thread ends also being directed through suitable guide devices. While the.- tensioning; devices. and guides for the needle threadends. and the looper thread endsareillus trated in groups of three each, only one end: for the needle. and one end for; the looper are shown, it. being. understood that only one end for each. ofv these instruments is used where a fine thread is; desired; but two. or more; ends can. be used in. each instrument ifa heavier-thread is preferred. In otherwords,. additional ends will be supplied to each" instrument through the; duplicate, guides. and, tensioning devices, the several ends. supplied each instrument constituting a single thread in supported on the knife edge of member 8|, as

shown in Fig. '7, u-nder which conditions.,.a second arm 84. on rocker shaft 83 is positioned to one side of the path; of a pin. 85: on wheel it on the main drive shaft, as shown in dotted lines in Fig- 9. Shaft 19. is journaled in bearings. 81 and rock shaft 83 is journaled in bearings 88. Plate member 8.0 is held fast on shaft 19 by a locking pin 89, so that if any one or the thread ends should break or become depleted, the detector 18., normally supported by that particular thread. end, will fall by gravity and the weight thereof upon being imposed on plate 80 will turn shaft 1:9 2. sufiicient distance to move the knife edge of member 8| into the recess 86 in arm 8.2 of rock shaft 83, whereupon said arm 82 will be lowered and turn said shaft with the result that arm 84. is: moved. into the path of the pin 85 on wheel 5L With: these parts so positioned, pin 85 upon engaging arm 84 will slide rock shaft 83 in its. bearlugs and, arm 82 of said shaft, which is in. engage.- mcnt. with a projection on: on clutch shifter rod ill, will slide, said clutch shifter rod 91 and rock a lever 92 tov disengage the clutch elements. As shown inv Fig. 4a, lever 92 carries a cam roller 93 engaging. a. cam surface 94 on a. yoke. member 95 pivotally attached to a ring 97 in a. groove in clutch element. 9.8.. When roller 93' is'in engagement with the low portion of cam surface 94., the clutch element 9.8 is yieldingly held by springs. 99: in engagement with clutch element HJOL, thus. transmitting motion from the drive pulley I01 to they drive shaft. 35. However, as before mentioned, when the stop motion mechanism is rendered operative by depletion or breakage, of one of the thread ends and the clutch shifter rod is actuated to rock lever 9.2:, roller :93. is. moved from the low portion of cam surface; 94 to the high portion thereof, with the result that yoke member- 56 is rocked to the left, as viewed in Fig. do and by being connected to the ring 91, separates the clutch elements 98 and I00, thus rendering the entire machine inoperative. In the present instance, only one thread end has been illustrated as constituting the needle thread and one as constituting the looper thread and, similarly, there has been illustrated only one detector 18 for each of said threads. Under these conditions, the detectors 18 are held properly spaced apart on shaft 19 by washers I02 of a thickness corresponding to that of the hubs I03 of the detectors. However, where additional thread ends are used, it is only necessary to remove member from shaft 19 and replace any desired number of washers I02 with additional detectors of proper length to permit their free ends to rest on the thread ends.

It has usually been the practice to provide machines of the present type with a plurality of members, called jacks that are adapted to move into and out of the spaces between juxtaposed work impaling points, so that in the absence of work on any one or more points, the machine can continue in operation and the stitches will be formed around the jacks. In the present instance, a novel arrangement of the jacks is provided, whereby a less number of jacks than the number of points can be used. Generally described, it consists in the provision of a comparatively short continuous series of jacks movable in a continuous path in a plane at an angle to the impaling points, the relative positioning and rates of movement of the points and jacks being such that as each point moves into sewing position, or that position at which it is in line with the sewing needle, jacks will be positioned at opposite sides thereof. This continuous series of jacks traveling in an endless path may, of course, take various forms. Preferably, they are mounted in fixed position on a disc rotatable in a plane at an angle to the bed plate. Referring particularly, to Figs. 2, 3 and 4, the jacks I04 are fixedly mounted in or adjacent the periphery of .a disc H16. It is only necessary that the jacks project beyond the periphery of the disc a sufficient distance to extend between the work impaling points. Disc IDS is mounted for rotary motion on a short shaft Hl'l secured in a bracket I08 mounted on the base 30 Engagement of the jacks with the work impaling points may be relied upon for rotating the disc. This arrangement, as mentioned, permits the use of a considerable less number of jacks than there are points. It is also a much simpler arrangement and reduces considerably the manufacturing costs so far as production and assembly of the jacks is concerned. Also, as stated, it is not necessary that the jacks be fixedly mounted in a revoluble member, it being only necessary that there be an endless chain or series of jacks traveling around a continuous path in a plane at an angle to the plane of the points and so positioned with respect to the points as to project therebetween.

The major portion of the movements of the needle and looper in the production of the present stitch has already been explained. To complete a full description of the movements of these parts, it should be said that the loop of looper thread pulled through the work upon retraction of the needle is retained in the hook on the needle until the needle is again advanced, whereupon the latch is opened upon engaging the goods and the loop of thread held against forward movement by the work, so that it is caused to move out of the hook to a position such as shown in Fig. 20. Upon the next retraction of the needle. the latch is again closed and as the needle is withdrawn from the work, the loop of looper thread rides over the closed latch and hook and off the needle as shown in Fig. 22. As to the loop of needle thread laid around the needle by the looper when the needle is advanced through the work, it will be seen from Figs. 19 and 20 that it is positioned to the rear of the latch, so that it rides over the latch and book when it comes into contact with the work during retraction of the needle as shown in Fig. 21.

What I claim is:

1. In a sewing mechanism, the combination of a work support, a thread needle, a looper, said needle and looper being positioned at opposite sides of the work support, means for advancing and retracting said needle and its thread through work on said support, and means on said looper for receiving a loop of needle thread each time the needle is advanced and depositing said loop 9 around the needle on the next succeeding advance movement of said needle, said looper also being adapted to deposit a loop of looper thread on said needle each time the latter is advanced.

2. In a sewing mechanism, the combination of a work support, a thread needle, a looper, said needle and looper being positioned at opposite sides of the work support, means for advancing and retracting said needle and its thread through 9 work on said support, and means on said looper for receiving a loop of needle thread each time the needle is advanced and depositing said loop around the needle on the next succeeding advance movement of said needle, said looper also being adapted to deposit a loop of looper thread on said needle each time the latter is advanced, and means on said needle for retaining said loop of looper thread until after said needle has been retracted from the work.

3. In a sewing mechanism, a work support, a thread needle at one side of said support, means for advancing and retracting said needle through work on said support, means constituting a looper at the opposite side of said support adapted to deposit a loop of thread around said needle each time the latter is advanced through the work, means on said needle for retaining said loop of looper thread thereon until the needle is retracted from the work, and means for looping the needle thread around said needle each time the latter is advanced through the work.

4. In a sewing mechanism, a work support, a thread needle at one side of said support, means for advancing and retracting said needle through work on said support, means constituting a looper at the opposite side of said support adapted to deposit a loop of thread around said needle each time the latter is advanced through the work, means on said needle for retaining said loop of looper thread thereon until the needle is retracted from the work, and means for looping the needle thread around said needle each time the latter is advanced through the work, the loop of needle thread being displaced from said needle before the needle is withdrawn from the work and the loop of looper thread being displaced from said needle before the next succeeding advance movement of said needle.

5. In a sewing mechanism, a work support, a thread needle at one side of said support, means for advancing and retracting said needle through work on said support, an oscillatory looper at the opposite side of said support, and means for reciprocating said looper laterally of the path of said needle, said looper being adapted to deposit 75 a loop of needle thread and a loop of looper thread on said needle each time the latter is advanced through the work.

6. In a sewing mechanism, a work support, a thread needle at one side of said Support, means for advancing and retracting said needle through work on said support, an oscillatory looper at the opposite side or" said support, and means for reciprocating said looper laterally of the path of said needle, said looper being adapted to deposit a loop of needle thread and a loop of looper thread on said needle each time the latter is advanced through the work, and means for retaining the loop of looper thread on the needle until the latter is retracted from the work.

'7. In a sewing mechanism, a work support, a thread needle at one side or" said support, means for advancing and retracting said needle through work on said support, an oscillatory looper at the opposite side of said support, and means for reciprocating said looper laterally of the path of said needle, said looper being adapted to deposit a loop of needle thread and a loop of looper thread on said needle each time the latter is advanced through the work, and means on said needle for retaining said loop of looper thread until said needle is fully retracted.

8. In a sewing mechanism, a work support, a thread needle at one side of said support, a looper at the opposite side of said support, means for advancing and retracting said needle through work on said support, said looper being adapted to deposit loose loops of needle thread and looper thread on said needle during each advance of the needle, and means for tensioning said loops around said needle.

9. In a sewing mechanism, a work support, a thread needle at one side of said support, a hook on said needle, a latch for said hook, means for advancing retracting said needle through work on said support, and means at the opposite side of said support for depositing a loop of looper thread within said hook and a loop of needle thread around the needle without the hook'each time said needle is advanced through the work.

lO.In a dial looper, a main drive shaft, a dial, driving connections between said shaft and dial for revolving the latter, work impaling points on said dial, a thread needle at one side of said points, means for advancing and retracting said needle through work on said points, a looper, means operable by said driving connections for oscillating said looper and reciprocating it laterally of the path of the advancing needle, said looper being adapted to deposit a loop of needle thread and a loop or" looper thread on said needle while the latter is advanced through the work.

11. In a dial looper, a series of Work impaling points, a thread needle at one side of said points, means for advancing and retracting said needle through work on said points, a looper at the opposite side of said points for depositing a loop oi looper thread. on said needle while the latter is advanced, and means for engaging a loop of needle thread while the needle is advanced and depositing said loop of needle thread around the needle during the next succeeding advance of said needle.

12. In a dial looper, a series of work impaling points, a thread needle atone side of said points, means for advancing and retracting said needle through work on said points, a hook on said needle, means at the opposite side of said points for engaging a loop of needle thread each time the needle is advanced and depositing said loop around said needle on the next succeeding advance of the needle, and means for depositing a loop of a second thread in said hook each time the needle is advanced.

13. In a machine of the character described, a work support, a needle at one side of said support, a hook on said needle, means for advancing and retracting said needle and hook through work on said support, means at the opposite side of said support for depositing a loop of needle thread around said needle when the latter is advanced, means at the opposite side of said support for depositing a loop of a second thread in said hook when the needle is advanced, and means retaining said loop in said hook until the hook is retracted from the work.

14. The method of uniting pieces of fabric with a series or" two-thread interlocking stitches which consists in advancing and retracting a thread carrying needle from a position at one side of the work through the work, forming a loop of the needle thread at the opposite side of the work each time the needle is advanced, depositing each retained needle thread loop around the needle on each succeeding advance of the needle, withdrawing the needle from said needle thread loops at the opposite side of the work, depositing a loop of a second thread around the needle each time it is advanced through the work, retaining the loops of said second thread on the needle until the needle is retracted from the Work, and removing the last mentioned loops from the needle at the needle side of the work.

15. In a dial looper, a sewing mechanism comprising a needle, means for projecting and retracting said needle through a piece of work, means for moving said needle laterally, a looper adapted to place a loop of needle thread and a loop of looper thread on said needle while projected through the work, and means on said needle for directing one side of a looper thread loop on the needle beneath the needle point when the latter is moved laterally.

16. In a dial looper, a looper, a bearing in which said looper isjournaled, means for oscillating said looper on its axial center in said bearing, and means for moving said looper longitudinally of its axis of oscillation.

1'7. In a dial looper, a looper, a bearing member in which said looper is journaled, means for rocking said looper on its axial center in said bearing, and means for moving said bearing member to reciprocate said looper longitudinally of the axis on which it rocks.

18. In a dial looper, a looper, a bearing member in which said looper is journaled, a pivoted support for said member, means for rocking said looper on its axial center in said bearing and means for rocking said bearing member support.

19. In a looper machine, a work support, a thread needle at one side of said support, means for advancing and retracting said needle and its thread through work on said support, a looper at the opposite side of said support adapted to place a loop of looper thread on the needle when the latter is advanced, means on said looper movable past one side of the needle between said needle and the needle thread to form a loop in the needle thread, and means for moving said looper laterally of the needle to present the opening in the needle thread loop to the needle whereby the needle can be projected through said needle thread loop and the latter deposited on the needle.

THOMAS H. DE SPAIN.

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