US1389520A - Attachment for machines for sewing looped fabrics - Google Patents

Description

E. C. LOCKHEAD AND L. P. BREWER.

ATTACHMENT FOR MACHINES FOR SEWING LOOPED FABRICS. APPLLCATION HLED MAR. 23, 1920.

1,389,520. Patented Aug. 30,1921.

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APPLICATION FILED MAR. 23, 1920.

1,389,520. Patented g- 30, 1921.

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Specification of Letters Patent- Patented Aug. 30, 1921- Application filed larch 2a, 1920. Serial Io. seam.

To all whom it may concern: I Be it known that we, ELMER C. Locnmmn and LESTER P. BREWER, citizens of the United States, residing at Eflingham, in the county of Efiingham and State of Illinois, have invented a new and useful Imrovement in Attachments for Machines for ewing Looped Fabrics, of which the following is a specification.

This invention relates to improvements in machines for sewing looped fabrics in which the thread is automatlcally cut and the fabric removed from the machine.

The object of the invention is to rovide an attachment for automatically cutting the thread by which the knitted or woven fabric is looped or sewed to ether, and to automatically remove the nished article from the machine when the thread is cut.

Another object of the invention is to provide simple and efficient means for enga ing the seam of the article carried by t e looper dial and force said seam away/from the dial and the stocking toward the dial and guiding means for en ging said'seam so that when the chain'or' t read connecting theiarticleis reached-itrwill-be guided onto the cutter and severed thereb With these and other -0b]ect s in view, the invention consists in certain novel features of construction as hereinafter shown and described, and specifically pointed out in the claims.

In the accompanying drawing:

Figure 1 represents a perspective view of a portion of a machine with this improved attachment shown applied. 4 v I Fi 2 represents a perspective view of the attac ment detached.

Fig. 3 is a side elevation of the knife carrying arm thereof; and a Fig. 4 is a top plan view of said arm.

Similar numerals refer to similar parts.

throughout the several views.

The attachment constituting this invention is shown applied to a conventional form of machine for uniting or sewing together the edges of knit gOOdS or loose fabrics and in which A represents the fixed dial and B the rotating dial which carries at its erimeter the impali'ng pins or looper oints C and-from which the stocln'n s or ot er articles D, to be looped or sewe are suspended, one stitch onl remainin on each point. This'stitch or oop is caug t by the curved clamp 11.

:through a'slot32 in said arm 31.

looper needle, not shown, and'sewed shut or closed witha loop or look stitch. After being sewed the stocking passes on around wlth the movement of the dial B to a oint where -1t pa sses between the base 0 the looper dial 'andan auxiliary angle guide, shown at 47, and hereinafter described.

.,The attachment constituting this invention comprises a casting adapted to be attached to the fixed dial A of the looping or sewing machine by abolt or other suit able means. To this casting 1 is attached an arm 4'by means of a bolt 5 passing through a slot 7 in said arm and entering the casting which provides for the-lengthening or shortening of the arm 4. The arm 4 terminates in a tapered nose 8 which lifts the thread or chain E whichconne'cts the articles D such as stockings or the like and conveys it to the cutting edge of a knife 9 which rests in a groove 10 in the upper edge of. the 110% 8 of arm, 4', and is held in place b a clam 11 provided with a groove 12 to t over t e arm.4 andwhich is secured byset screws as 13 on either side of Thefcutting edge of: knife 9 is protected by a guard 15 which is in the form of a flat strip fastened at one end to the clamp 11 by a screw 16. The arm 4 is held stationary by a lock 18 which is fastened to the casting 1 by a bolt 19.

A remover 22 is attached to a support 23 which extends at right an les to arm 4 and is held in lace by a spira spring 27 which is attached at one end to the remover 22 and is fastenedat its other end to the support 23 and said support 23 is secured to the casting" 1 at the opposite end by any suitable means.v

To further the efficiency of this cutting and removing device there is attached a seam guide comprising 'an edgewise disposed holding arm 31 attached at one end'to the casting 1 by the bolt- 19 which asses This arm has a twist therein intermediate its ends,

reciprocating guide lever 33 between a boss "whereby its slotted end is disposed vertically edgewise whileits other end. is flat- A the lever 33 and fastened by means of the nuts 50 and 51 and also by the bolt 48 passing through the auxiliary angle guide 47 and fastened by means of nuts 53 and 54.

In the use of this attachment the parts being in the position shown in Fig. 1, the thickness of the stocking D forces the angle guide 47 out from the looper dial and in so doing the guide finger 38 presses the seam of the stocking away from the dial as shown at the right of Fig. 1. Owing to the fact that the toe of the stocking is tucked under the foot in the operation of looping, the stocking will be thicker between the two ends of the toe or rather between the corners of the too. The plow shaped nose 8 of the holding arm 4 rides along the seam at its inner side and pushes the seam out against the tension of the member 47 so that when the thread or chain connecting two stockings is reached, the plow shaped nose 8 will project under said chain and cause it to ride up on the nose and be guided onto the knife 9. This thread is placed under tension incident to the movement of the dial away from the knife 9 and this tension on the thread causes the knife 9 to sever the thread which conects the stocking, th severed ends of which are shown at the left of Fig. 1.

After the thread has been severed, the continued movement of the dial will bring the stocking into engagement with the member 22 which will operate to force the stocking off the looper. points as shown at the left of Fig. 1, and the finished article will drop down on the floor or into a receptacle placed to receive it.

What is claimed is:

1. In a machine for sewing looped fabrics, the combination with a ring support having an impaling pin carrying ring rotarily mounted thereon, of a thread cutting mechanism mounted on said support and comprising a seam enga ing nose extending beyond the perimeter 0 said ring, a cutter carried by said nose, and means for directing the seam toward said nose whereby the nose will extend under the thread to be cut and guide it against said cutter.

2. In a machine for sewing looped fabrics, the combination with a ring support, having an impaling pin carrying ring rotarily mounted thereon, of a thread cutting mechanism mounted on said support and comprising a seam engaging nose extending beyond the perimeter of said ring, and arranged tangentially relatively thereto with its point facing in the direction opposed to that in which said ring turns to insure the passage of the nose under the thread to be cut, and a cutter carried by said nose and on to which the thread is directed by the rotation of said comprising a seam engaging tapered nose extending beyond the perimeter of said ring, and a cutter mounted longitudinally on the upper face of said nose to engage the thread directed thereon by said nose and sever it.

4. In a machine for sewing looped fabrics, the combination with a ring support, having an impaling pin carrying ring rotarily mounted thereon, of a thread cutting mechanism mounted on said support and comprising a seam engaging nose extending beyond the perimeter of said ring, a cutter carried by said nose, and a guard for said cutter arranged thereover.

5. In a machine for sewing looped fabrics, the combination with a ring support, having an impaling pin carrying ring 10-" tarily mounted thereon, of a casting mounted on said support, an arm carried by said casting and extending tangentially relatively to said ring and provided at its outer end with a tapered nose projecting beyond the perimeter of the ring, a cutter carried by said nose, said nose facing in a direction opposite to that in which said ring turns to insure the passage of the nose under the thread to be out, and means for directing the seam toward said nose whereby the nose will extend under the thread to be cut and guide it against said cutter.

6. An attachment of the class described, comprising a casting to be mounted on a. ring support on a machine for sewing looped fabrics, an arm mounted for longitudinal adjustment on said casting and provided at its front end with a tapered nose, a knife carried by said nose, a guard arranged over said knife, and means carried by said casting and positioned in advance of said nose for directing the seam. toward said nose whereby the thread to be cut will be guided by said nose and directed against said knife.

7 An attachment of the class described, comprising a supporting and attaching member, an arm mounted for longitudinal adjustment on said member, a cutter detachably mounted on said arm, another .arm mounted on said member parallel with the first mentioned arm and in a lane above said first mentioned arm, a gui e lever pivoted at one end to the free end of said second mentioned arm, a coil spring connecting said lever intermediate its ends with said arm, a guide finger depending from the free end of said lever, and an angle guide depending from said lever intermediate its ends, sai finger and angle guide being adapted one to engage the inner face of the seam of the article bein sewed and the other the outer face t ereof, said angle guide being designed to direct the thread to be out onto said cutter.

8. An attachment of the class described, comprising a supporting and attaching member, an arm mounted for longitudinal adi'ustment on said member, a cutter detachab y mounted on said arm, another arm mounted on said member parallel with the first mentioned arm and in a plane above above said knife with its free end deflected said first mentioned arm, a guide lever pivoted at one end to the free end of the second mentioned arm, a coil spring connecting said lever intermediate its ends with said arm, a guide finger depending from the free end of said lever, and an angle guide depending from said lever intermediate its ends, said finger and angle guide being adapted one to engage the inner face of the seam of the article being sewed and the other the outer face thereof, said angle guide being designed to directthe thread to be out onto said cutter,

and an article removing member extending at right angles from said attachi member to position it in rear and spaced rom said .cutter to adapt it to operate on the article separated by the cutter.

9. An attachment of the class described,

including an attaching member, an arm extending therefrom and, having a tapered nose at its free end, said nose having its upper edgetlongitudinally grooved to form a knife receiving seat, and a clamp for detachably securing said knife in operative position.

10. An attachment of the class described including an attaching member, an arm extending therefrom and having a tapered nose at its free end, said nose havin its upperedge longitudinally grooved to orm a knifereceiving seat, and a clamp for detachably securing said knife in operative position, and a guard carried by. said clamp upward facilitate the passage of the thread to be out between it and the knife.

11. An attachment of the class described including a cutter, an arm arranged in a plane thereabove and projecting in advance thereof, :a lever pivoted at one end to the free end of said arm, a depending ide finger carried by the free end of sai lever, a coiled spring connecting said lever intermediate its ends with said arm whereby said finger is normally deflected, a screw t readed rod depending from said lever intermediate its ends having adjustably mounted thereon an angle guide mounted for cooperation with said finger to direct the, thread to be cut toward the cutter. 5

12; In a machine for sewing looped fabrics, the combination with a ring support having an impaling pin carrying ring rotarily mounted thereon; of a thread cuttin mechanism mounted on said support an comprising a seam engagin nose extending beyond the perimeter of said ring, a cutter carried by said nose, and means located in advanceof said nose for directin the seam onto said nose whereby the threa to be cut will be guided by said nose against said outter.

13. In a machine for sewing looped fabrics, the combination with a ring support having an impaling pin-carrying ring rotarily mounted thereon; of a thread cutting mechanism mounted on said support and beyond the perimeter of said' ring, a cutter carried by said nose, and means for directing the seam toward said nose whereby the nose will extend under the thread to be cut and guide it against said cutter, said means comprisin elements arranged one to engage the outer ace of the article being sewed below the seam thereof, and the other engaging the inner face of the seam, said elements being so connected that the article bearing against the element engagin its outer 'face will operate to cause the ot er element to force the seam away from the looper dial into position/to be engagedby said nose.

ELMER C. LOOHHEAD. LESTER PAUL BREWER.

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