US3610186A

US3610186A - Arrangement on sewing machines for stacking the sewn work blanks

Info

Publication number: US3610186A
Application number: US863179A
Authority: US
Inventors: Gerhard Murdter
Original assignee: GM Pfaff AG
Current assignee: GM Pfaff AG
Priority date: 1968-12-19
Filing date: 1969-10-02
Publication date: 1971-10-05
Anticipated expiration: 1988-10-05
Also published as: DE6812124U

Abstract

Arrangement on sewing machines having a carrier arm and including a carrier bar for receiving work blanks astride after they leave the stitch-forming location on the carrier arm of the machine in downward direction, said bar extending parallel to and being connected to the machine arm.

Description

United States Patent [72] Inventor Gerhard Miirdter Balingen, Germany [2]] Appl. No. 863,179 [22] Filed Oct. 2, 1969 [45] Patented Oct. 5, 1971 [73] Assignee Firma G.M. Piaff GA Kaiserslautern/Pfalz, Germany [32] Priority Dec. 19, 1968 [33] Germany [31] G6812124.4

[54] ARRANGEMENT ON SEWING MACHINES FOR STACKING THE SEWN WORK BLANKS 2 Claims, 1 Drawing Fig.

52 us. on ..'.112/121.29, 214/6, 100/1 [511 1nt.Cl D05b 33/00 501 Field of Search ..1l2/l2l. 29; 214/5.5,6; 271/61, 81; Bil/83,84, 86, as; 100/1, 2, 7

[56] References Cited UNITED STATES PATENTS 2,327,252 8/1943 Dickerson 214/55 2,492,925 12/1949 Segur 1 12/12 l 29 3,l59,l22 12/1964 Hedegaard ll2/l2l.29

Primary Examiner-James R. Boler AttorneyRobert H. Jacobs ABSTRACT: Arrangement on sewing machines having a carrier arm and including a carrier bar for receiving work blanks astride after they leave the stitch-forming location on the carrier arm of the machine in downward direction, said bar extending parallel to and being connected to the machine arm.

ARRANGEMENT ON SEWING MACHINES FOR STACKING THE SEWN WORK BLANKS BACKGROUND OF THE INVENTION Devices are known for stacking the work blanks that are 1 discharged by a sewing machine which have a carrying element extending transversely of the feeding direction of the material being sewn, that receives the work blanks astride or in a straddling manner. The carrying element arranged at a distance from the sewing machine must in this connection be moved in relation to the operation of the preceding sewing machine by means of its own drive means upon the obliquely extending path from its low position in which the forward end of the work blank slides over it into an upper end position and subsequently again back to its low position. Only in this manner it is possible to keep the path short which is to be covered by the freely falling work blanks and thus to insure a safe reception of the work blanks. An arrangement of this type thus makes possible a relatively safe receiving of the work blanks to be stacked, however, due to the drive means necessary for the rod-shaped carrying member, it is expensive to construct and also very unwieldy. In addition, the stacked sewn material cannot be readily removed. Especially the bundling of a stack of sewn material is cumbersome because for this it is necessary to remove the stack of work blanks from the carrying element, lay it upon a bundling ribbon whereupon it is only possible to bundle the stack.

SUMMARY OF THE lNVENTlON It is an object of the invention to provide an arrangement for stacking sewn work blanks which, while obviating parts to be moved, insures safe reception of the work blanks to be stacked and simultaneously makes possible the bundling of the work blank stack without any further manipulation.

in accordance with the invention this is accomplished by means of a carrier bar that receives the work blanks astride, in that the carrier bar is secured to the material-carrying arm of the sewing machine in a direction parallel to the feed of the sewing machine and that at the bottom side of the carrier bar a bundling band releasably connected with it is provided in the area between the two ends.

The work blanks leaving the stitch-forming location of the sewing machine slide preferably downwardly astride upon the carrier bar parallel to the direction of the material feed. When the stack of work blanks has reached the desired height or a sufficient number of work blanks then the bundling band arranged at the bottom side of the carrier bar and essentially parallel thereto is released from the carrier bar, is folded with both its ends over the stack of work blanks and the latter is subsequently bundled.

A particularly advantageous arrangement of the carrier bar, especially when lock stitch seams are produced, is obtained in that the bar is releasably secured to the material-carrying arm of the sewing machine.

During the production of a lockstitch seam the work blanks, for example underwear, are placed annularly in a known manner around the material-carrying arm of the machine. Thus, as they leave the stitch-forming location, they are threaded upon the carrier bar and the band secured to its bottom side. When the stack of work blanks has reached the desired number, then the stack is bundled in the required manner, subsequently the carrier bar is released for removing the stack from the material-carrying arm of the machine, the bundled stack is removed and then it is again connected with the machine for receiving the next stack.

DESCRlPTlON OF THE INVENTION In the following the invention is explained more in detail with reference to an embodiment illustrated in the accomparaing drawing.

e arm-downward-operating sewing machine 1 illustrated in the drawing is mounted in a known manner upon a frame 2 and comprises a head 3, a standard 4 and a material-carrying arm 5.

The needle bar 6 and the material presser bar 8 that receives the presser foot 7 are arranged in the head 3 of the sewing machine, while the feed dog 9 is provided in the material carrying arm 5. The feed dog guides the material 0 being sewn in a known manner down the arm underneath the stitch forming area of the sewing machine.

At the end of the material-carrying arm 5 a carrier bar 10 is arranged which receives the work blanks that leave the stitchforming area of the sewing machine. The carrier bar 10 is bent at both of its ends in the manner shown in the drawing. The carrier bar 10 which is essentially parallel to the direction of feed of the sewing machine is received at its lower end that is bent vertically downwardly in a bore that is provided in an intermediate floor 11 of the frame 2. Its upper end that is essentially horizontally directed is supported in a U-shaped recess (not illustrated) provided at the end of the material carrier arm 5.

At the bottom side of the carrier bar 10 a bundling band 13 of rectangular cross section is provided that is directed essentially parallel to the carrying bar. One end of the bundling band is formed to constitute a loop 14. This end of the bum dling band 13 is hooked onto a hook 15, secured to the bottom side of the carrier bar 10, while the lower end of the bundling band is held by means of a clamping spring 16 also provided at the underside of the carrier bar.

The work blanks delivered by the sewing machine which already hang down on both sides from the material carrier arm 5 of the machine while the seam is being formed slide onto the carrier bar 10 as they leave the stitch-forming area and are received thereon astride. In the embodiment illustrated the work blanks slide downwardly on the carrier bar 10 and come to rest on the intermediate floor 11 of the frame 2. At that time they still hang across the carrier bar 10. When the stack of work blanks has reached a certain height or when a certain number of work blanks have been stacked, the bundling band is first released at its lower end and then at the upper end of the carrier bar 10. Subsequently the stack of work blanks is bundled in a known manner and removed from the carrier bar 10.

in the embodiment illustrated the bundling band 13 is releasably secured at both ends at the bottom side of the carrier bar.

It is possible without departing from the inventive concept to fasten the bundling band at one end to the intermediate floor 11 of the frame and the other end to the material carrier arm of the machine. The embodiment illustrated in the drawing will, as a rule however be preferred because in the other possible embodiment the bundling band 13 and the carrier bar 10 must be secured separately from one another to the material carrier arm of the sewing machine and to the intermediate floor.

Having now described my invention, what I desire to protect by letters patent is set forth in the appended claims.

I claim:

1. Arrangement on sewing machines for stacking the sewn work blanks, particularly for arm-downward-operating machines having a material carrier arm with a stitch-forming area, said arrangement comprising a carrier bar for receiving work blanks astride upon leaving the stitch-fanning area, means securing said carrier bar to said carrier arm said carrier bar extending essentially parallel to the direction of feed of the sewing machine, a bundling band, means at each end of said carrier bar releasably retaining said bundling band proximate the bottom side of said carrier bar intennediate the two ends thereof.

2. Arrangement in accordance with claim 1, wherein said securing means releasably supports said carrier bar on the material carrier arm of the sewing machine.

Claims

1. Arrangement on sewing machines for stacking the sewn work blanks, particularly for arm-downward-operatIng machines having a material carrier arm with a stitch-forming area, said arrangement comprising a carrier bar for receiving work blanks astride upon leaving the stitch-forming area, means securing said carrier bar to said carrier arm said carrier bar extending essentially parallel to the direction of feed of the sewing machine, a bundling band, means at each end of said carrier bar releasably retaining said bundling band proximate the bottom side of said carrier bar intermediate the two ends thereof.