US2182940A

US2182940A - Thread guiding device

Info

Publication number: US2182940A
Application number: US229054A
Authority: US
Inventors: Brussell Jacob
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-09-09
Filing date: 1938-09-09
Publication date: 1939-12-12
Anticipated expiration: 1956-12-12

Description

Dec. 12,1939. J. BRUSSELL 2,182,940

THREAD GUIDING DEVICE Filed Sept 9, 1958 INVEIjTOR) JA (08 BR UJJELL ATTORNEY.

'5 structure and also .1 further provided a frame mounted upon 49 spools and fed downwardly into Patented Dec. 12, 1939 UNi'rso stains 2,182,940 THREAD- eprnruo. DEVICE Jacob Brussell, New York, N. Y. Application September 9, 1938, Serial No. 229,054 8 Claims. or. 112 m) The present invention is directed to multiple needle sewing machines, more particularly to means for guiding a plurality of threads simultaneously to the machine.

The present application is a continuation-i11 part of my co-pending application Serial No. 152,401, filed July 7, 1937, and entitled Multiple needle sewing machines. In the aforesaid application, I have described and claimed a new and F7 useful structure of a multiple needle sewing ma.-

chine in which a large number of needles may be mounted within a very limited space without interference with the functions of the normal sewing machine. In order to accomplish this, Various important changes in the construction of such sewing machines are necessary, and such constructions are set forth and claimed in the afore said application. Among the elements there described is a thread-guiding and thread-pulling mechanism, whereby when the sewing operation is completed, all the threads may be simultaneou sly loosened and thus minimize danger of breakage.

The present application is directed to said to the means for mounting a plurality of spools and guiding the thread in order to avoid entanglement of the various threads, and atthe same time to allow the ready, easy and positive feeding of threads to theplurality of needles.

In accordance with the present inventiomthere is provided a sewing machine mounted upon a bed, as usual, and provided with a plurality of needles and associated mechanisms. There is said bed and carrying a considerable number of spindles or the like on which spools of thread may be mounted. Said frame also carries guiding means whereby the threads may be removed from the anism. Mounted upon said frame is a series of tension devices such as are common in machines of this character, through which the threads pass on their way to the sewing mechanism.

In the accompanying drawing, constituting a part hereof, and in which like reference characters indicate like parts:

Fig. 1 is a front elevational view of a sewing machine having the improvements of the present invention; and I r Fig. 2 is across-sectional view thereof taken along the line 22 of Fig. 1.

The bed. I of the sewing machine has mounted thereon a standard 2 bearing an overhanging arm 3 in a substantially horizontal position and the sewing mechterminating in a sewing head 4. The machine is provided with a plurality of laterally arranged needles associated with the remainder of the :ewing mechanism, as more particularly set forth in the above-identified co-pending application.

Secured to the bed of the sewing machine at the edge thereof is a frame 6 extending upwardly a substantial distance. At an intermedion thereof is a shelf 'l carrying rows of dies- 8 and 9, respectively, arranged in staggered relationship. Each of these spindles cara spool if.) of suitable thread. The purpose of the plurality of rows and the staggered relationship is to provide a maximum of spools of thread in a minimlun of space. The upper front edge ii of frame ii is provided wtih a plurality of openings 5 equal in number to the number of spindles d and 5*. Thread from each of the spools it passes upwardly through one of the openings i2, reversing its direction and passing downward- 4 r,

as shown. at it, and through corresponding openings in bar M, secured to the arms #5. I

Secured to the shelf 7 is a series of bars It,

- extending forwardly and downwardly, and terminating in a substantially horizontal bar 67. Mounted on the bar are the usual tension devices equal in number to the number of spindles. The thread it, after passing through the openings in i l, passes through the individual tensions and said threads then are caused to extend downwardly and converging to the head 4 of the sewing machine.

On the head is provided a guide 59 of relatively small width compared to guides H and M and bar ll, buthaving a corresponding number of openings. Said guide is mounted on the upper part of the sewing machine head by bracket 21 A similar guide 25 is mounted by bracket 22 on the lower part of the head 2, the width thereof being approximately equal to the width of the multiple needle bar carrying needles 5. Thereby, the threads passing downwardly from guide i9 through guide 2! are in substantially parallel relationship and distance apart for passing through the eyes of the needles. Thereby, entangling of threads during the sewing operation is substantially eliminated.

There is provided a rod 23 in a substantially horizontal position, said rod the plurality of threads passing between guides 19 and El, and located at a point intermediate said guides. The inner end of said rod is provided with a downwardly extending arm 24 which terextending behind spaced approximately the correct frame 6 by I 2. minates in a bar 25 substantially parallel with red 23. Said bar is secured in the standard 2 in such a manner as to allow oscillation thereof. At point 26 on the inner end of rod 23 is provided a spring 21, the opposite end of which is secured to the sewing machine and tends to hold the rod 23 in the position shown in Fig. 2.

In operation, the thread is caused to pass from each of the spools i9, upwardly in a practically vertical path for a substantial distance. This insures that the thread may leave the spools freely without becoming knotted or entangled, and in the passage upwardly said threads become substantially straightened. The threads, on passing downwardly, as shown at It, are kept adequately spaced and the movement is such as to avoid breaking of the thread and sharp changes of directions. After the threads have passed through the tensions on bar l'l, they are caused to converge towards the sewing head, as shown at MS, and the guide ill is usually made arcuate in shape in order to facilitate the entrance of the threads into guide l9 while at the same time keeping them sufiiciently apart so as to avoid any possible entanglement. Then the threads pass through guide 28 which is the final guide, giving the final direction to the threads so as to enter the needles without any interference. When it is desired to loosen the threads, as is common in sewing operations, the operator grasps rod 23 or arm 25 and pulls the same forward, whereby the rod 23 pulls all of the threads between guides l9 and 2!. Because of the presence of said guides, the position of the threads, both above and below the same, is maintained, and thus even during the loosening operation there is no danger of the threads becoming entangled. When the desired amount of loosening has been accomplished, the operator merely releases the rod 23 and it springs back into position for a subsequent operation.

Although I have described my invention, setting forth a single embodiment thereof, it is apparent that the present invention is not limited to the details of construction described. For example, the rod 23, although shown in a horizontal position and being in the form of a rod, may be in a different position and may take other forms. The exact mounting thereof may be varied to a large extent without departing from the ideas herein set forth. I have shown the various guides II, l4, l9 and 2!, as well as tension bar IT, as being in substantially parallel and in horizontal positions. It is highly desirable that these positions be maintained, but it is, of course, possible to change the location of the various elements and even to have them aligned in a manner and not at all in horizontal or in parallel relations. For instance, the frame 6 may be placed at one side of the bed I instead of in the rear thereof, but, of course, in such case additional guides or other means for bringing the thread to the needles must be provided. lhe guide is need not be a single member but may consist of two substantially parallel guides, as shown at l9 and i9 in Fig. 2, secured to the head of the machine. These and other changes in the details may be made within the spirit of the pres ent invention, the scope of which is not to be limited except by the character of the claims appended hereto.

What I claim is:

1. In a sewing machine, a bed, a sewing head mounted thereon, a thread guide adapted to hold a plurality of threads secured to said head, thread tension means cooperating with said guide, a

thread pulling means comprising a rod in proximity to but out of contact with said threads and transverse thereto, said rod being pivoted and mounted independently of the thread guiding and tension means, a spring holding said rod in inoperative position, and means for manually pressing said rod against said threads, the operation of said rod pulling all of said threads.

2. In a sewing machine, a bed, a sewing head mounted thereon, a thread guide adapted to hold a plurality of threads, said guide being secured to the head of said machine and being approximately parallel with the arm thereof, thread tension means cooperating with said guide, a thread pulling means comprising a rod in proximity to but out of contact with said threads and transverse thereto, said rod being pivoted and mounted independently of the thread guiding and tension means, a spring holding said rod in inoperative position, and means for manually pressing said rod against said threads, the operation of said rod pulling all of said threads.

3. In a sewing machine, a bed, a sewing head mounted thereon, a thread guide adapted to hold a plurality of threads secured to the head of said machine, threat tension means cooperating with said guide, a second similar thread guide secured below the first narned guide on said head, a thread pulling means mounted between said guides and adapted to be manually operated to pull a plurality of threads simultaneously, said thread pulling means being mounted independently of the thread guiding and tension means and being normally out of contact with said threads.

4. In a sewing machine, a bed, a sewing head mounted thereon, a thread guide adapted to hold a plurality of threads secured to the head of said machine, thread tension means cooperating with said guide, a second similar thread guide secured below the first named guide on said head,'a thread pulling means mounted between said guides and adapted to be manually operated to pull a plurality of threads simultaneously, said guides being approximately parallel with each other and with the arm of said machine, said thread pulling means being mounted independently of the thread guiding and tension means and being normally out of contact with said threads.

5. In a sewing machine, a bed, a sewing head mounted thereon, a thread guide adapted to hold a plurality of threads secured to the head of said machine, thread tension means cooperating with said guide, a needle arm adapted to hold a plurality of needles, whereby a plurality of threads pass between said guide and arm, a thread pulling means mounted behind said thread between said guide and arm and adapted to be manually operated to pull a plurality of threads simultaneously, said thread pulling means being mounted independently of the thread guiding and tension means and being normally out of contact with said threads.

6. In a sewing machine, a bed, a sewing head mounted thereon, a thread guide adapted to hold a pluralityof threads secured to the head of said machine, thread tension means cooperating with said guide, a needle arm adapted to hold a plurality of needles, whereby a plurality of threads pass between said guide and arm, a thread pulling means mounted behind said thread between said guide and arm and adopted to be manually operated to pull a plurality of threads simultaneously, said means extending approximately parallel to the plane of said threads, said thread pulling means being mounted independently of the thread guiding and tension means and being normally out of contact with said threads.

7. In a sewing machine, a bed, a sewing head mounted thereon, a thread guide adapted to hold a plurality of threads secured to the head of said machine, thread tension means cooperating with said guide, a needle arm adapted to hold a plurality of needles, whereby a plurality of threads pass between said guide and arm, a thread pulling means mounted behind said thread between said guide and arm and adapted to be manually operated to pull a plurality of threads simultaneously, said means extending approximately parallel to the plane of said threads and being pivotally mounted in the head of said machine, said thread pulling means being mounted independently of the thread guiding and tension means and being normally out of contact with said threads.

8. In a sewing machine, a bed, a sewing head mounted thereon, a thread guide adapted to hold a plurality of threads secured to the head of said machine, thread tension means cooperating with said guide, a needle arm adapted to hold a plurality of needles, whereby a plurality of threads pass between said guide and arm, a thread pulling means mounted behind said thread between said guide and arm and adapted to be manually operated to pull a plurality of threads si1nultaneously, said means extending approximately parallel to the plane of said threads, and a spring secured to said means for normally biasing the same into inoperative position, said thread pulling means being mounted independently of the thread guiding and tension means and being nor mally out of contact with said threads.

J. BRUSSELL.