US2635570A - Slip stitch sewing machine - Google Patents

Description

April 21, 1953 lH. HONIG ETAL SLIP STITCH SEWING MACHINE 4 Sheets-Sheet 1 Filed Dec. 20, 1949 April 21, 1953 H. HoNlG ETAL SLIP STITCH SEWING MACHINE 4 Sheets-Sheet 2 Filed Deo. 20, 1949 Irl S. T d m v Wwf I n n o H r.. rVHG x m o. H M v.. B o. wm

-.Fi1ed bec. 2o, 1949 4 swaps-sheet s April 21, 1953 H. HoNlG ErAl. 2,635,570

` SLIP STITCH SEWING MACHINE FIG. 6

I N VEN TORS.

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April 21, 19,53 H. HONIG E'IAL 2,635,570

sLIP STITCH SEWING MACHINE Filed Dec. 20, 1949 4 Sheets-Sheet 4 2s' 'ze INVENToRs. Hor ry Honig By Max vGreenfield Patented Apr. 21, 1953 UNITED STATES 'PATENT OFFICE SLIP STITCH SEWING MACHINE Harry Honig and Max Greenfield, New York, N. Y.

Application December 20, 1949, Serial No. 134,004

l -1 The present invention relates to sewing apparatus, more specifically, thisV invention relates to apparatus for sewing slip stitches, ofthe type particularly adapted for forming the slip stitch, which loosely and resiliently joins the outer necktie fabric with the necktie lining in a four-inhand necktie to permit stretching of the necktie without breaking the stitch.

Apparatus or machines for sewing slip stitches in neckties or the like have heretofore been known and used. However, such apparatus as heretofore used for the slip stitching purposes in the necktie art have had Ycertain shortcomings which detracted from their convenience and desirability. The slip-stitch sewing apparatus heretofore used had very stiff action, by which is meant that the movement of the needle through the material and movement of the material upon the needle was effected with great eiort and strain against great resistance, and the material was moved along the needle in substantially at position; for which reasons the needle had to be of great length, at least as long as the necktie upon which it worked, and had to be firmly and almost rigidly supported in place. Despite the support given the needle, however, breakage of the very long needle of the apparatus of the prior art, with its consequent substantial increase in maintenance cost and costly delays in the work, were frequent occurrences.

22 Claims. (-Cl. 112-174) Also, both because of the great length of the Y needle as well as because the operation of the machine against great resistance from the work, the machine had to be of large and bulky size, .occupying a great deal of factoryv space, and of very heavy and rugged construction and supported on specially built heavy and rugged supports, by reason of all of which the initial cost of the machine and its installation as well as its maintenance, was comparatively high.

It is the general object of the present invention to provide a machine for sewing slip stitches, particularly in neckties, which will overcome all of the foregoing disadvantages and shortcomings of the slip stitch sewing machines of the prior art.

It is, thus, one object of the present invention to provide a slip stitch sewing machine of the character described in which the needle pene- It is still another object of the present invention to provide a slip stitch sewing machine of the character described which compactly bunches the sewn material upon the needle whereby a much smaller needle may be used.

It is yet another object of the present invention to provide a slip stitch machine of the character described which, by reason of lesser needle length and ease and facility of sewing, may be of relatively small size and light weight and construction, occupying a minimum of factory space and supportable on a conventional shop table, if

desired.

It is also an object of the present invention to provide a slip stitch sewing machine of the character described which positively and mechanically removes the sewn material from the machine with a minimum of strain and effort upon the machine.

It is a further object of the present invention to provide a slip stitch sewing machine of the characterdescribed in which the needle may remain permanently threaded without the need for lrethreading for each individual necktie sewn thereon. y

It is a still further object of the present invention to provide :a slip stitch sewing machine of the character described having novel and improved fabric guiding means which readily and easily guides and positions the several fabrics sewn together in proper relative position for receiving the slip stitch seam.

Still further and generalr objects of the present invention are to provide a slip stitch sewing machine of the character described which, because of its size and weight as well as because of its ease of operation, is economical to produce and economical to maintain; which is strong, durable and rugged and not likely to get out of order; which maybe supported on conventional work tables withoutA requiringany specially built supports therefor; and which is easy and convenient to use and operate and greatly reduces the physical and mental strain on the operator.

The foregoing and other advantages and superiorities of the slip stitch sewing machine of the present invention'will become more readily apparent to those skilled in the art from the embodiment thereof shown in the accompanying drawings and from the description following. It is to be understood, however, that such embodiment is shown by way of illustration only, to make the principles and practice of the invention more readily comprehensible and without any intent of limiting the invention to the specific details therein shown.

In the drawings:

Fig. 1 is a side elevational view of the apparatus of the present invention, as viewed from the right of an operator, taken on line I-I of Fig. 3;

Fig. 2 is a side elevational view of the same as viewed from the left of the operator;

Fig. 3 is a top plany view of the apparatus, partly broken away and section, tc show details of construction, with the part in broken lines showing the fabric guiding means in open position;

Fig. 4 is a fragmentary, detailed view, partly in section, showing the fabric moving means of the present invention;

Fig. 5 is a section taken Online 5=5 of Fig. 3;

Fig. 6 is a rear end view of the apparatus;

Fig. '7 is a fragmentary, side elevational view of the rear portion of the apparatus showing additional or alternate means for vibrating the sewing needle;

Fig. 8 is a fragmentary, perspective view of the frontend of the apparatus illustrating the auto'- matic means for opening the fabric guiding mechanism. of the machine;

Fig.- 9 is an isometric view of the movable part of the fabric guiding mechanism of the present invention, partly broken away to show details of construction, and

Fig. 10 is a section taken on line IIl--IIJ of Fig?.

Generally stated, the slip stitch machine of the present invention consists of a horizontally disposed long needle, means for folding or crimping the fabric and advancing it toward the needle to be pierced and threaded thereby, reversible means for advancing and withdrawing the material along the needle, and means for rocking the needle to facilitate its movement through the fabric, all operable from a single drive, and means for alining and guiding the several fabrics to'- `ward the crimping mechanism.

Referring more specifically to the accompany ing drawings, the machine of the present invene tion comprises a frame which may consist of a base IG anda table II having an upper plate I2 mounted thereon and means for spacing and supporting the table upon the base I0 such as the posts I3, I4 and I5.

The driving mechanism of the apparatus may comprise a main shaft 20, suitably iournalled, as in spaced postskor brackets 2I and I4, set on the base II!- The shaft 2li is provided at one end, at one edge of the table I I, with a pulley wheel 23, by which it may be connected as by a belt to a driving motor (both not shown), and, inwardly of the pulley wheel 23, with a gear wheel 24. The driving shaft 26 is providedrat its opposed end, adjacent the other edge ofthe table II, with another gear wheel 25, and inwardly of the gear with a bevelled gear 26.

At the rear of the apparatus there is supported on the base Il?, an upright wall 21, in which is journalled a bushing 2-8 having a square or other polygonal opening therein, in which is slidably keyed or positioned 'a square or other correspond= ingly polygonal rod 29 having a knob 30 at its outer end and a socket 3l at its inner end of greater cross section than the bushing opening, inwhich socket may be secured, by any desired slltablemeans, a forwardly horizontally extend'- ing -needle 32, in parallel and slightly raised posi tion relative the upper table plate I2.

flIfhe bushing 28 carries exteriorly of the wall 21 a gear 33 which meshes with a sector gear 34, fixed on a shaft 35, which may be journalled in a post 36 supported on the wall 21. The sector gear 34 is connected by a link 31 to an eccentric 38 mounted on a shaft 33 journalled with suitable bearings in Wall 21 and post I3; the eccentric 38 operating to convert the rotary movement of the shaft 39 into a rocking movement of the bushing 28 of the rod 29, the needle 32, such rocking movement being through an arc of any magnitude less than 360 that may be desired and preferably of about 180.

The shaft 39 carries on its inner end a bevelled gear 40 by means of which it is operably connected to the main shaft 20 as by a cooperating bevel gea-r 4l mounted on a shaft 42 which is Journalled in a suitable bearing secured in the post I4. The shaft 42 also carries a reduced gear 43 in position to mesh with the end gear 25 on the main shaft 20.

It will bevapparent that as the main shaft 20 is rotated the needle actuating shaft 42 will be rotated and the needle 32 rocked at a speed which, because of the reduced size of gear 43, will be greater than the speed of rotation of the shaft '20. Preferably a gear ratio of 1 to 5 may be used to effect the rocking of the needle 32 five times for every revolution of the main shaft 20.

The fabric folding or crimping means may comprise a toothed wheel 45 having evenly spaced teeth 46, all of which are cut approximately at their center by a V-shaped groove 41. The wheel 45 is mounted on a shaftd48 journalled at its ends between the post I'5 and abracket 49 supprted on the undersideof the lower table plate II in position to have the teeth 46 extend through the longitudinal opening 5] formed in the table plates II and I2 with the groove 41 in alignment with and its bottom slightly raised above the level of the plate I2 and on a level with the needle 32.

rifhe wheel445 is operatively associated with the main shaft 29 through a shaft 52 journalled in a bracket or post 53 and having at its inner end a b evel gearv 54 meshing with the Ibevel gear 26 of' the main shaft 20. The shaft 52 carries, under the shaft 48, a worm gear 55 which meshes with a gear 56 carried on a shaft 48.

Y Another toothed wheel 58 of similar construction as the wheel 45 is idly journalled directly above wheel 45 on a horizontal shaft 59 which is set into a block 60 mounted on a square rod 6I which is vertically slidably arranged in a square opening vt2V in the blockA I5'. The opening 62 extends through the base IIB and the portion of the rod '6I below thebase I8 has a coil spring 63 mounted over it, which spring is retained in place, as by means of a nut 64 engaging the threaded end of the, square rod 6I to normally maintain the block 6U in lowermost position, resting ons block I5, with 'the teeth of the wheel 58 meshing with the teeth of the companion crimping wheel 45.

The wheel 45 is geared to have its portion-above the table I I move in a direction toward thel needle 32. It will be apparent that one or more layers of fabric which are arranged between the teeth of the wheels 45 and 58 will be crimped or arranged in wave formation between the teeth and advanced by the teeth, as the wheels 45 and A58 are rotated needleward, to have the needle penetrate both sides of each crimp or wave created in the fabric by the crimping wheel teeth.

-It will also be apparent that the rapid rocking vibratory or oscillating movement of the needlel 32, effected simultaneously with the rotation offthey wheels 45 and^`58 and the advancing ofthe fabric on the needle; will facilitate the penetration of the needle through the fabricas Well as the advancing 'of the fabric. on. the needle and will enable `the accomplishment of both processes with a minimum of strain. Itwill be further apparentthat, because the needle oscillation doesA not involve a. complete rotation of the needle, the resistance reducing effect of. its rocking can beattained withoutinter-fA fering with. the; pre-threadingsof the needle, so thatY the fabric may be actually threaded.v and stitched.. as it is moved along` the needle, with a double thread .stitch vof. increased strength, if desired, and the need'of rethreading the needle for each garmentstitched `isy eliminated..-Fur` thermore the stitched fabric moves easilyi along the needle in wavy formation and without-jamming, sothat the operation of the .machine isagainst a continuously constant but low strain, which eliminates needlebreakage from any' possible jammingof the fabric or over-strain of the machine, withoutv the need for rigid needle support, and generally lightens the Work ofY and the tension upon theV operator and permits the use ofl a much smaller and much lighter machine.

rMeansV are provided-for spacing the wheels 45 and 48 vapart for the introduction of -fabric between them as Well asfor facilitating the'withdrawalof the-stitched fabric from the needle 32. Such means maycomprise a pulley wheel 66 vsuitably supported in any desired manner in elevated position relative to the block 60 and a cord, chainor cable 61- passing over the pulley 66, one end engaging the-block 60, as by means of the ear Y88, on-its upper endffacey-and the rother end ofthe cable 61 connected to manual or pedal depressing meansof iany Vdesired or suitableconventional type,v not thought necessary to be specificallyv illustrated. i" #Y *The fabric Yadvancing means for moving and gatheringrthe material of the Vnecktie in folds upon the needle 32v may comprise an endless exibleconveying member, preferably in theV form of an endless sprocket chain -10 consisting of'links each comprising a pair of spaced plates 1|, the overlapping endsof which are connected byy pins 1-2. Thesprocket chain 10 is disposed in a slot 13 formed in the table Iland top plate`|2 inl alignment With-'the needle 32 and is Vsupported with one of its parallel lengths below the table I I and-the other above the table II; the sides of the links fitting relatively snuglyV between the slot edges in the plate l2 to prevent lateral displacement of thesprocket chain during operation.

' The sprocket chain 10 is supported upon ak pair of lspacedsprocket wheels 15 and 16. One of said sprocket'rwheels as the rear one 15 may be an idler'journalled on av shaft 11 supported in a bracket 18 xed on the underside of the table I I. The other or forward sprocket Wheel 16 may be journalled on a vshaft 19 which is likewise supported-in a bracket 80 depending from the-other side of the table plate I I. The shaft 19 may carry on one end, in alignment with the gear wheel 24, agearwheel8|- yA thirdsprocket Wheel '83 may' engage kthe sprocket 10 from below,v at apoint adjacent its center. The sprocket' 83'may be supported on ar shaftf 84 -journalled in the post |4, which shaft carries a gear-wheely 85 in alignment with the gearwheel8|. j n' Iv In `order to make the sprocket chain operate reversiblyfrom the main driving shaft 20preferably independently ofthe wheels45 and'48 and' 7g, -While the weight .,Qf, .the .wheels i I nr1 alnd m' l of the needle 32, the latter of 'which may be operated contlnuouslyfin the same direction, there is provided a bar 81 which is pivoted at its center 88 upon a suitable bracket 89 mounted on the table plate I2. The bar 81 carries at its inner end a shaft 90 supported in an elongated slot 9| of a. boss 92 on which shaft 90 is `journalled a. gear wheel 93 in position between a driving gear wheel 94 meshing with the gear wheel 24 and the gear Wheel 85 of the sprocket 83. The bar 81 carries at its forward end ashaft 95 supported in a slot 96 on a boss 91 on which is journalled a second gear wheel 98 in position between the driving gear Wheel 94 and the gear Wheel 8| of the sprocket 16.

The bar 81 has a'forwardly extending arm 99 secured thereto which may terminate in a vertical end |00 in which may be formed a vertical slot I0| which is engaged upon the pin |02, which may be set in a side face of the block 60; the `slot |0| and slots9| and. 98 permitting ready adjustment of the gear wheels 93 and 98 in proper rnesh.

ing position. f

It will be readily apparent that when the machine is set for' sewing, with the block '60 in lowermost position resting on the post l5, the forward end of the rod 81 will be tilted down and its rear end raised so that the gear Wheel 98 will operatively engage the gear wheel 8| of the sprocket 1S With the driving gear 94 to cause the sprocket 16 to rotate in the same direction as the wheel 45, namely, to turn the sprocket chain in the direction of the needle to move any material disposed over the sprocket chain and advance it upon the needle; the gear wheel 93 being idle. It will likewise be apparent that when the block 50 is raised, the forward end of the arm 81 Will be raised and its rear end lowered, so that gear wheel 98 engages the gear wheel 94 with the gear wheel -85 of thesprocket 83 to operate the sprocket chain in the reverse direction, for removing the necktie fabric from the needle; suchl operation coinciding with the spacing of the wheels 45 and 48 to permit lts carrying out.

It will be noted that the reverse feeding mech-i ances of the-feeding and needle-vibrating mech-- anism that might be occasioned if a reversiblemotor were used for the same purpose.

To ensure engagement between the sprocket chain 10 and any fabric pasing thereover so thatsuchfabric will be advanced by it there is provided means for resiliently pressing such fabrics-J against the sprocket chain 10. Such means comprises a post |05 mounted on the table I I paralleli to the sprocket chain opening or slot 13 and intermediate its ends. A pair of links |08 and |01 are each pivoted by one end at theupper end of the post |05 in lparallel relation 'to the slot 13. Each of the links |05 and |01 carries at its other, lowerend a shaft |08 and |09, *respect4 tively, extending transversely over the slot 1,3. each shaft carrying journalled thereon a rubber tired wheel ||0 and respectively, in position Side 0f .the post |05.

ateatro may be adequate to provide the desiredfeeding pressure, additional pressure may be provided by resiliently connecting the shafts and `||'|1 as by the spring I|2 to pull the wheels |I|| and towards one another and against the sprocket chain 10.

To facilitate the movement of the fabric by the sprocket chain 'I3 upon the needle 32 .suitable feeding teeth may lbe provided. on the sprocket chain. These feeding teeth may be out in the 'side plates 'Il of the links or may be separately mounted with the link plates upon the pins l2. For improved operation in .the movement of the fabric on to the needle it has been found desirable to provide inwardly feeding teeth |I5 on distantly spaced links, as'every 10 or 12 links, so that each set offteeth |I5 moves not one fold or fabric but a bunch of folds or fabric nrst under the wheel IIil and then under the wheel I I I, maintaining the fabric in bunche'd folded position throughout the movement for greater ease of such movement. Reverse feeding teeth Il, on the other hand, may be provided on each of the other links of the sprocket chain 10.

It may here be stated that the pressure of the rollers or wheels III) and III also serves to keep the fabric from rocking with the needle, which would nullify the effect of the rocking, and to maintain the fabric in a stationary .fiat position.

, 4Other means for imparting vibratorymovement to the needle 32 during the operation of the machine for the purpose of facilitating its movement into and through the fabric may be provided in lieu of the vibratory rocking movement heretofore described or in addition thereto. Such needle vibrating means is illustrated in Figs. 6 and ,'7 and comprises an electro-magnetic vibrator |23 mounted on the rearward extension of the base |0. The vibrator is provided with a vibrating or clapper arm I2| which is arranged to strike the knob 30 at the end of the needle rod 2'9 when such rod is at its extreme rearwardly extended position to give the needle 32 a slight forward movement while the clapper arm I2! is in circuit breaking position. The requisite position of the needle rod 29 for such operation, as will be readily apparent, will occur only when the machine is in stitching operation, when the pressureof the fabric advancing against and on the needle 32V will cause it to withdraw to its rearinost position with the knob 3G in close proximity to the: clapper arm I2 i. Such pressure will also cause the knob 3d to recoil back to. vibrator contacting position after each slight forward movement.- v0n the other hand, when the machineis reversed to withdraw the fabricvfrom theV needle 32 the forward pull exerted by suchY withdrawalwill cause the needle 32 and. the needle rod 2S to be pulled to itsextreme forward position, with the knob 33 out of contacting position with'the. clapper arm I2| of the vibrator |23.

it will be clear that the vibratory movement this` produces in an axial direction will` also permit andjin no way interfere with threading of the needle 32 before theslip stitching loperation is commencedto permit continuous operation without need for rethreading'.

Improved means are also provided with the slip stitching machine ofthe present invention for the automatic guiding of the -necktiev fabric' and lining, aswell as any tape that is sometimes associated with the slip stitch seam, in position to receive .the slip stitch seam at the desired'a'rid proper place. Such fabric guidingrmechanism the table plates and I2 and a plate |26 mounted on pins |21 between the table |I and base l0; the plate |26 being provided with a concave forward edge |28 formed, preferably, by a central fiat edge portion and outwardly tapering yside edge portions.

The fabric guiding means comprises, further, a gate member, generally designated as |30, of approximately rectangular shape, which is pivoted at an inner corner on a pin or ,post I3| set into the base adjacent the post I5. The gate |30 may be formed of a plurality, such as three, of spaced super-posed plates, namely, an upper plate |33, an intermediate plate |34, and a bottom plate |35, all secured to` one another in 'spaced apart position by connecting and spacing pins, such as |36, set into their corners.

The upper plate |33 may be arranged to lie substantially parallel vwiththe table II and may be formed with'a slightly concave inner edge |38, and with an inwardly tapering recess ordepres-l sion |39 at its center adapted to serve as a guide for a tape, if one is used. A cover plate |40 may be provided over the recess |39 andl hinged, as at |4I, to the plate |33 to cover the recess |39 and to bring the level of the plate |33 approximately even with the surface of the plate |2.

ri'he plate |34 may be widerthan the plate |33 with its width increase arranged to project inwardly of plate |33 and it may be arranged so that its portion projecting inwardly extends into the space between the table I'I and the guide plate |26 to overlap the latter. The plate |735 may be similar in size and arrangement to the plate |34 and may be .positioned to extendunder the plate |25 when the gate |30A is in closed position. v

The inner edges of both plates |34 and |35 may be concave,isimilar to but in reverse direction to the edge |28 of the plate |26.

In operations, the lining and face fabric of the necktie are placed between the inner edge of the gate I3i|A andthe forward edge of the machine. The overlapping edges of plates |26, |34 and |35 will dispose the fabrics in zig-zagn formation, to create a frictional drag upon them while the concave edges of the latter three'. plates will tend to center and dispose the fabrics in proper position for accurately receiving the slip stitch where desired. Where a tape is usedfsueh tape maybe separatelyplaced in the depressed.v

recess |39' in the plate4 I 33 and fed therethrough, together with the face and lining fabric, to the crimping wheels 45 and 4'8.

Means may be provided for automatically normaiiy keeping the gate |3|)"in closed. position and for automatically opening the gate after one necktie is slip-stitched for the insertion ofV thefabrics of the following necktie for slip stitching. Such means may include a coil spring |43 mounted' over the hinge pin |3`I to normally resiliently urge the gage towards closing position,y

and a downwardly and forwardly tapering nose or cam I'M mounted on' the forward face of the block G, the upper or cam edge |45 of which may engageagainst the inner edge of.` the gate I3I), The cam 44Vmay beso arrangedA and shaped that when its supporting block Si) is-'in lowermost position with the wheels 45 and 46 meshing for sup Stitch operationV the edge ofthe gate |33 willride on the upper portion of the cam edge |45, Vpermitting it to remain:v in closedposition in response topressure from thev spring U23. However, when the blockf is raised to reverse' the' operation of the machine from; :sli-pv may comprise. a straightforward edge |26- lon 75 stitching tothe renoval'ofthe slip stitched neck- 9, tie thev nose or cam |44 Will be raised with it, its ca l'n edge |45, as it rises, pushing the gate |30 into open position, as indicated by the broken lines in Fig. 3, in readiness for insertion of fresh fabrics.

This completes the description of the construction and operation of the slip stitching machine of the present invention. It will be clearly seen that this slip stitching machine, by reason of the vibration of the needle either in a planer perpendicular to its long axis or parallel to its long axis or both, as Well as by reason of its novel fabric advancing mechanism makes the operation of the machine light and easy and against a minimum of strain and resistance and permits the compact gathering of the slip stitch fabric upon the needle thereby making possible a smaller and more compact machine of lighter weight yet rugged, more durable and less likely to go out of order by reason of needle breakage or from operational strain.l

It will also be seen that the slip stitch machine of the present invention, because of its positive reversible fabric moving mechanism, makesthe operation of slip stitching more'rapid and easier upon the operator.

It Will also be apparent that the fabric guiding mechanism of the machine of the present invention further speeds, simplifies and facilitates the work of the operator of the machine. y

It will likewise be apparent that the machine of the present Ainvention by `reason of having all of its several mechanisms, performing its several operations, have a common drive and common means for synchronously setting them into operation, is of highly simplified construction utilizing a minimum number of parts likely to get out of order and is compact and, therefore, economical Iasl Well as easy to produce, use and maintain.

It will further be apparent that numerous variations land modifications may be made in the slip stitch machine of the present invention in accordance with the principles hereinabove set forth, Without the use of any inventive ingenuity. We desire, therefore,r to be protected for any and all such variations and modifications that may be made within the spirit of the present invention and the scope of the claims hereto appended.

What we claim is: l

1. Av slip stitch sewing machine comprising a needle, means mounting said needle at one end in a horizontal position for reciprocatory and oscillating movement, a toothed crimping wheel having a circumferential groove Yformed thereon through the teeth thereof mounted vvforwardly of said needle in position to receive the free end of saidneedle in the groove thereof, a 'cooperating toothed crimping Wheel having a circumferential groove formed through the teeth thereof, means for supporting said second crimping Wheel in displaceable relation to said rst crimping'wheel,

a main driving shaft .adapted to be connected to a source of power, means operatively connecting said rst crimping Wheel to said main driving shaft for rotation of said rst crimping wheel and means for oscillating said needle.

2. A slip stitch sewing machine comprising a needle oscillatably mounted by one end in horizontal position, a toothed crimpingwheel having a circumferential groove formed thereon through l the teeth thereof mounted forwardly of said needle in position to receive thevfree endof said needle in the groove thereof, a cooperating toothed crimping wheel having a circumferential groove formed through the' teeth thereof, means for""s'upporting said second crimping wheel "in displac'eable relation to said first crimping wheel, a'main driving' shaft 'adapted' to be connected' to a source of power, means operatively' connect-v ing said rst crimping wheel to said main driv-` ing shaft for rotation of said'rst crimping wheel',` means'for voscillating said needle and means'op' era'tivelyv connectedk with said maink driving shaft` for advancing a fabric on said needle including'` la" continuous `conveyormember underlying said needle and resiliently 'pressed rotary elements overlying said needle.

3. A'slip stitch sewing machine vcomprising a needle, means mounting said needle at one end' inA a horizontal position for reciprocatory and osolllating'movement, a toothed crimping wheel' having a circumferential groove formed thereon? through the teeth thereof mounted vforwardly of said needle in position to receivethe free end of said needle in the groove thereof, a cooperating toothed crimping wheel Vhaving a circumferential groove formed through the' teeth thereof, adapted' to'r mesh with said first crimping wheel, means for" supporting said second crimping wheel indise' placeable relation to'said first crimping wheel," a' main driving shaft adapted to be connected to a* source of power,1 means `operatively connecting said rst crimping wheel to said driving shaft for rotation of lsaid firstcrimping Wheel, and means" operatively connecting said needle to the "said main driving' shaft for oscillation of the saidi needle when said first crimping wheel is rotated: '4. A 'slip'stitch sewing machine comprising al needle oscillatably 4mounted in 'horizontal posi# tion,4 a toothed crimping wheelhaving a circm' ferential groove formed thereon through the teeth vthereof mounted forwardlyof "said" needle in` position to receive vthe-free end o'f'said'ne'edle in the `groove thereof, v'a 'cooperating' toothedI crimping 'wheel having a'circumferenti'al groove` formed through the teeth thereof and adapted 'to mesh with said'firstcrimping wheel, means for supportin'g'said second crir'npingf`wheel in 'dis` placeable relation tosaid yfirstA crimping wheel,

main shaft adapted to be 'connected to a source,`

of power, means operatively' connecting said firstcrimping Wheel to said driving shaft for rotation of said first crimping'wh'eel',`and means operar' tively connecting said'needle'to the said main driving shaft for' oscillation of the said needle in a plane perpendicular totheilongitudinal axis thereof through an angle` of less' thanv 3609 said first'crimping wheel-is rotated. f

5; A slip stitchsewing` machine comprising av needle oscillatably mounted in horizontaliposi-v4 tion, a. vtoothed crimping wheel having a `circumferential groove lformed zthereon through'the teeth thereof 'mounted `forwardlyof said needle' inV position to receive theiree` end of said "needle in the groove thereof;- a cooperating' toothed crimping wheel havingacirc'umferential grooveformed through the teeth thereof, means 'for supe' porting said second crimping wheel in displaceable relation'to said rst crimping Wheel, rotary main shaft adapted to be connected to a source of power, means operatively connecting said iirstcrimping wheel to said driving shaft for rotation" of said crimping wheel, and means operatively connecting said needle to vthe said main driving shaft for oscillation of the said needle in a plane' wheel. f

when

6. A slip-stitch sewing machine comprising a needle mounted horizontally by one end forsliding and rotary movement, a wheel having circumferentially disposed crimping teeth and a groove formed through said crimping teeth mounted forwardly of said needle yin position to receive the free end of' said needle in the said groove, a cooperating wheel having crimping teeth and a groove formed through said crimping teeth and adapted to mesh with said nrst wheel, means for supporting .-said second wheel in displaceable relation to said iirst wheel, a main rotary driving shaft adapted to be connected to a source of power, means operatively connecting said rst wheel to said main vdriving shaft for rotation of said crimping wheel, means for oscillating said needle and means for advancing a fabric on said needle including an endless conveyance member underlying and parallel to said needle in position to have `said needle rest thereon, and operatively connected to said main driving shaft, and :a pair of pivotally mounted downwardly 'diverging roller members overlying said needle and resilient Ameans connecting said roller members lfor urging them `towards onev another and against said needle.

"7. A slip stitch sewing machine comprising a needle mounted horizontally by one end for sliding and rotary movement, a wheel having circumferentially disposed crimping teeth and a groove formed through said crimping teeth mountedforwardly of lsaid needle in position to receive the free end of said needle in the said groove, .a cooperating wheel having crimping teeth and a groove formed through said crimping teeth, and adapted to mesh with said first wheel, means forsupporting said second wheel in displaceable relation to said rst wheel, a main rotary drivingshaft adapted to be connected to a vsource .of power, means voperatively connecting said `iirst 4wheel to said main driving shaft for rotation of said crimping wheel, means for oscillating said needle andmeans for advancing a fabric -on said needle comprising an endless conveyance manber underlying said needle, means for reversibly moving said conveyance member and means operatedfrom said second wheel supporting means for operatively connecting said conveyance member moving means to said driving shaft for movement in selected direction, and a pair oi.' pivotally supported downwardly diverging, roller elements overlying said needle and resilient means connecting said roller `members for 'urging them towards one another` and 'againstthe said needle.

8. A slip stitch sewing machine comprising a needle mounted horizontally by one end for slid-.

ing and rotary movement, a toothed crimping wheel having a .circumferential groove formed through the teeth thereof mounted forwardly of said needle in position to receive the free end of the needle in the said groove, a main driving shaft adapted to be connected to a source of power, means operatively connecting Wheel to said driving shaft for rotation of the said crimping wheel, a second toothed crimping wheel having a, circumferential groove formed through the teeth thereof, means .for supporting said second toothed wheel including a block and means for supporting said block for movement in a plane perpendicular to the long axis of the said needle. resilient means for normally maintaining said block 'in lowermost position with the said second crimping wheel meshing with the said first crimping wheel, means for raising said block for said crimpingv spacing said crimping wheels, means operativelyy connected with the said drivin-g shaft for oscillating said needle in .a plane perpendicular to its longitudinal axis and through an angle of less than 360 when said first crimping wheel is rotated, means for moving a fabric along said needle including an Vendless .sprocket chain underlying and parallel to said needle and positioned to have said needle rest thereon and means connected to .said block .and operable by the movement thereof for operatively engaging .said sprocket chain with said driving shaft for movement in selected direction, a pair of roller elements pivctally supported in downwardly Vdiverging direction over said needle and vresilient means connecting said roller members for movement towards one another and against said needle.

9. The slip stitch sewing machine of claim 8 wherein spaced selected links of the said sprocket chain are formed with teeth facing the direction of the supported end of the said needle. i

l0. The slip stitch sewing machine of claim 8 wherein selected spaced links of the said sprocket chain are formed with teeth facing in the direction of the supported end of the said needle and other links of the said sprocket chain arel formed with teeth facing in the direction of the free end of saidneedle.

l1. The slip stitch sewing machine of claim 8 wherein said means for moving said sprocket chain compri-ses a pair of sprockets engaging said chain from the inside thereof, one of said sprockets being .an vidler and the other of said sprockets being a driver and carrying a gear wheel therewith, a third sprocket carrying a gear wheel therewith engaging said sprocket chain from below, a `driving gear wheel on said driving shaft, a second .gear Wheel engaging said driving gear wheel, a pair of idler gear wheels mounted on a tiltable support in position to have one of them interengage said second gear wheel with the gear Wheel carried with said third sprocket when .said idler gear wheel support is tilted in one direction and to have the other of said idler .gear wheels engage .said .second gear wheel with the gear wheel of said second sprocket when the said support is. tilted in .the other direction, and means connected to said block and operated by the movement of said block for tilting said idle gear support in selected direction.

l2. A slip stitch sewing machine comprising a needle mounted horizontally .by one end for sliding :and rotary movement, a toothed crimping Wheel having a circumferential `groove formed through the teeth thereof mounted forwardly of said needle in position to receive the free end of the needle in the said groove, a main driving shaft adapted to be connected to a source of power, means operatively connecting said crimping wheel to said driving shaft for rotation of the said crimping wheel, a second toothed crimping wheel having a circumferential groove formed through the teeth thereof, means for supporting said second toothed wheel including av block and means for supporting said block for movement in a plane perpendicular to the long axis of the said needle, resilient means for normally maintaining said block in lowerinost position with the said second crimping wheel meshing with thesaid nrst crimping wheel, means for raising said block for specing said crimping wheels, means operatively connected with the said driving shaft for oscillating said needle, means for moving the fabric along said needle including an endless conveyor underlying and parallel to vsaid needle and positioned to have said needle rest thereon, a pair of reversible` with the main driving shaft, and a pair of rollerl elements pivotally supported in downwardly diverging direction over said needle/and resilient means connecting said roller members for movement towards 'one another against said needle.

' 13. A slip stitch sewing machine comprising an elongated needle'having an eye. at one end, means for supporting.` said needleuby its otherend for sliding and rotary movement including a rotatably supported bushing, a rod. having the needle socket at one end keyed for slidable movement within said bushing, a main rotary, driving shaft adapted to vbe-iconnected to al source of power, a gear wheel on said bushing, a rocker arm meshing with .said bushing gear wheel, an eccentric mounted on a rotary shaft, a link connecting said rocker arm lwith said eccentric and means operatively connecting said rotary shaft to said main driving shaft, a toothed crimping wheel having a circumferential groove formed therein throughy 14. A slip stitch sewing machine, comprising a V needle supported by one end for limited movement in the plane of its long axis and for rotary movement in a plane perpendicular to its long axis, means adjacent the free end of said needle for folding a fabric and feeding said folded fabric upon the free 'end of the needle, reversible means for moving a fabric along said needle, means for rotatably oscillating said needle in a plane per'- pendicular to the long axis of the needle, through an angle less than 360, a main rotary driving shaft adapted -to be connected to a source of power, and means operatively connecting said fabric folding means, said fabric moving means, and said needle oscillating means to said driving shaft. f 15. A slip stitch sewing machine, comprisin a needle supported by one end for limited movement in the plane of its long axis and for rotary movement in a plane perpendicular to its long axis, means adjacent the free end of said needle for folding a fabric and feeding said folded fabric upon the free end of the needle, reversible means for moving a fabric along said needle, means for rotatably oscillating said needle in a plane perpendicular to the long axis of the needle, through an angle less than 360, a main rotary driving shaft adapted to be connected to a source of power, means operatively connecting said fabric folding means, said fabric moving means, and said needle oscillating means to said driving shaft, and means for simultaneously inactivating said fabric folding means and reversing said fabric moving means. 16. A slip stitch sewing machine, comprising a needle supported by one end for limited move,- ment in the plane of its long axis and for rotary movement in a plane perpendicular to its long axis, means adjacent the free end of said needle for folding a fabric and feeding said folded A114 fabric upon the free end of the needle, reversible .means for moving a fabric along'saidv needle, means for rotatably oscillating said needle in a plane perpendicular to the long axis of the needle, through an angle less than 36.0, a main rotary driving shaft adapted to be connected to a source of power, means operatively connecting said fab-,g ric folding means, said fabric moving means, and said needle oscillating means to said driving shaft, and means for guiding a fabric to said fabric folding means.

A-17. A slip stitch sewing machine, comprisin a needle supported by one end for limited move;- ment in the plane of its long axis and for rotary movement in a plane perpendicular to its-long axis,meansadjacent the free end of said needle for lfolding a fabric and feeding said folded fabric upon the free end of the needle, reversible means for moving' a fabric along said needle; means for rotatably oscillating said needle in a plane perpendicularto the long axis of the needle, through an angle less than 3607, a main rotary driving shaft adapted to be connected to a source of power means operatively connecting said fabric folding means, said fabric moving means, and said needle oscillating means to said driving shaft, and means for guiding a fabric-to said fabric folding means, said guiding means comprising a table forwardly of said fabric folding means, said table having a substantially straight transverse forward edge and at least one plate supported below said table in spaced parallel relation thereto and projecting forwardly thereof, and a guiding gate pivotally supported by one corner adjacent a corner of said table for rotation in a plane parallel to said table, said gate comprising a top plate on a level with said table and having a slightly curved edge facing said table edge and at least two plates supported in spaced parallel relation below said top plate and projecting forwardly of the curved edge thereof and in position to overlap said under-the-table plate, said under-the-table plate and said lower gate plates having curved facing edges.

18. The slip stitch sewing machine of claim 17 wherein the curved edges of said plates are concave.

19. A slip stitch sewing machine, comprising a needle supported by one end for limited movement in the plane of its long axis and for rotary movement in a plane perpendicular to its long axis, means adjacent the free end of said needle for folding a fabric and feeding the folded fabric upon the free end of the needle, reversible means for moving a fabric along said needle, means for rotatably oscillating said needle in a plane perpendicular to the long axis of the needle, through an angle less than 360, a main rotary driving shaft, adapted to be connected to a source of power, means operatively connecting said fabric folding means, said fabric moving means and said needle oscillating means to said driving shaft, means for guiding a fabric to said fabric folding means, said guiding means comprising a table forwardly of said fabric folding means, said table having a substantially straight forward transverse edge and a guiding gate pivotally supported by one corner adjacent a corner of said table for rotation in a plane parallel to said table, said gate comprising a top plate on a level with said table and resilient means for normally holding said table with an edge of said top plate contiguous to said table edge, said table and said gate each having plates supported thereunder in spaced parallel relation thereto and projecting therefrom in lposition to overlap when saidgate is in closed position, said'v plates havingtheir ment in the plane of its long axis, means adjacent Y the free end of said needle for folding a fabric and feeding said folded fabric upon the free end of the needle, reversible means for moving .a fabric along said needle, means for oscillating said needle in the plane of its long axis when said needle is in its extreme Withdrawn position, a main rotary driving shaft adapted to 'be connected to a source of power and means operatively connecting said fabric folding means and said fabric moving means to said driving shaft.

21. A slip stitch sewing machine, comprising an elongated needle having an eye atone 'end means mounting said needle at its other end in a horizontal position for reciprocable and oscillatory movement, means for folding a fabric in wave-like folds yand simultaneously advancing ysaidiolded fabric upon the free end of said needle.

. l 1,6 a' drivinglshaft adapted -.to be connected to -a source of power, means operatively connecting said fabric folding and advancing means to said main driving shaft, and means for oscillating said needle. p y

22. A slip stitch sewing machine, comprising a needle having an eye at one end, means mounting said needle at its other end in a horizontal posif tion for reciprocable and oscillatory movement, a driving shaft, means progressively crimping a fabric and simultaneously advancing. said crimped fabric onto the free end of saidneedle, said fabric crimping and advancing lmeans operatively connected to said driving shaft, and means opera tively connecting said needle to said driving shaft for oscillating said needle simultaneously with the operation of said fabric crimping and ,advancing means. 1 HARRY HONIG.

`MAX GREENFIELD.

References cited is the me of this patent UNITED STATES PATENTS Number YName v Date y 2,303,380 Y Naftali et al. Dec. l, 1942

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