US1335450A - Thread-cutting machine for embroidered fabrics - Google Patents

Description

E. MITTELHOLZER. THREAD CUTTING MACHINE FOR EMBROIDERED FABRICS. APPLICATION FILED JUNE 26, 1919.

1,335,450.. Patented MaJ1'.30, 1920.-

lNVENTOR ERNEST MITTELHOLZER, 0F PATCHOGUE, NEW YORK.

THREAD-CUTTING MACHINE FOR EMBROIDERED FABRICS.

Specification of Letters Patent.

aten-ted Mar. 30, 1920.

Application filed June 26, 1919. Serial No. 306,866

To all whom it may concern Be it known that I, ERNnsT h IITTELHOLZER, a citizen of the United States, and resident of Patchogue, in the count-yof Suffolk and State of New York, have invented a certain new and useful T bread-Cutting Machine for Embroidered Fabrics, of which the following is a specification.

This invention relates to embroidering machinery.

In mechanically embroidered goods, the pattern is usually designed in the form of a plurality of embroidered zones or areas,

and most commonly these embroiderings constitute widely distributed clusters which are arranged in straight parallel columns running in the longitudinal direction of the fabric. As these goods leave the embroidering machine, in the -manufacture, the said clusters of embroiderings which are laterally opposite each other are connected by waste threads, which are left there as a result of the utilization of a single continuous thread in the mechanical embroidering process. At the present time, these connect ing waste-threads are cut manually by operators with common scissors, after the fabric has been removed from the embroidering machine. and thereafter the fabric lsput r The principal object of my invention is to remedy the above mentioned disadvantages that are at the present time attendant to the cutting of the waste-threads, and to provide a simple and inexpensive machine that will perform this operation automatically rapidly, economically, and with great efficiency.

()ther objects and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 shows across sectional elevation of the thread cutting machine.

Fig. 9, is front elevation of the machine shown in Fig. 1. w

Fig. 3 is an elevation of a fragment of a detail of this machine.

Fig. 1 is an elevation of a portion of embroidered fabric, illustrating the type of embroidered goods in the manufacturing process of which this machine is utilized.

The embroidered goods 1 is usually of a pattern which consists of series of embroidered rosettes 2, or similar conventional artistic figures, which are arranged in the form of rows 3 that run in the longitudinal direction of the fabric, and most commonly the individual rosettes or figures 2- of the pattern are also arranged laterally opposite each other, as exemplified by the sample design shown in Fig. 1. In the manufacturing process performed by the embroidering machine a single thread is utilized for executing the several embroidered zones 2 that run in a transverse line across the goods, with the result that in the finished embroidered"fabric each laterally opposite pair of rosettes 2 is connected by a thread 1, here denominated the waste-thread. These waste-threads 4: which thus run in series of rows between the rows 3 of embroiderings have to be entirely removed before the goods are rendered marketable, and to effect such removal the threads have to be cut as shown in the row 5, and thereafter the fabric is put through a special machine which mows off the two loose pieces of wastethreads 6 depending from each rosette after the cutting of the threads 1, thereby leaving the rosettes entirely free and clear from the loose waste-threads 6 as indicated in the row-7.

The thread cutting machine is provided with a shaft 8 which is driven by any suitable ineans, not shown, in the direction of the arrow 9, Fig. 2. Said shaft carries a plurality of toothed cutting-wheels 10 keyed thereon, each of which comprises a hub 11, a rim portion 12, and a plurality of knives 13 in its periphery which are configurated as shown and provided with cutting edges 14 that terminate in sharp points 15. Each of the cutting-wheels 10 is surrounded by a sleeve 16 which comprises a circular Wall 17 that encompasses the cutting teeth 13 of the wheel 10 and is provided with a series of transverse through slots or openings 18, Fig. 3, a web 19 which extends from the wall 17 toward the shaft 8. and a bearing 20 which fits around the hub 11 of wheel 10 and thereby renders the sleeve 16 rotatable about the cutting-wheel. The cuttingwheels 10 are so located upon their driving shaft 8 and spaced thcrealong that the distan ces between the cutting edges of the teeth or knives 13 of the respective wheels 10 coincide with the distances between the center lines, indicated by the dash and dot lines 21, that run equidistantly between the several rows 3 of cmbroiderings.

The walls 17 of sleeves 16 extend close to each other, whereby they collectively constitute a continuous roll or cylinder 10 C0111- posed of various sections, each of which is independently rotatable about its respective cutting wheel 10. And the last of the series of sleeves 10 is joined to the receiving end 22 of the extremity of a pipe 23 connected to any suitable pneumatic suction machine,

not shown, which runs continuously the cutting niachlne is operated and thereby 7 creates a partial vacuum or strong suction in all of the sleeves 10 constituting said contmuous cyllnder 10, the webs 19 of the sleeves 10 being provided with openings 2i 7 to permit the air to be more effectively drawn out of the entire cylinder.

In the operation of the machine the fabric 1 is passed over the sleeves 10, or the collective roller 10 which they compose, in the manner shown in Fig. Eland the fabric is advanced in the direction of the arrows 25, and the drive-shaft 8 rotates the cuttingwheels 10 in-a direction opposite to that of s the travel of the goods.

As the fabric 1 advances over the sleeves it is drawn by the suction therewithni to then peripheries, and

the waste-threads 4e are drawn by the suction; through the slot-ted openings 16 and toward the knives 13 of wheels 10, whereupon the advancing knives cut the advancing wastethreads at their centers, thereby simultaneously executing the cutting operation over the entire width of the fabric as the goods are being fed and auton'iatically performing the cutting operation until the entire fabric has been passed over the ma chine. After thus completing the cutting of the threads l the goods may be run through the thread mowing machine and the cutwaste-threads 6 may be completely eliminated. V i

The rotatability of the sleeves 16 permits the free and ready passage of the fabric thereover while it is being held thereagainst by the suction. Although the suction draws the threads effectively tl'irough the open-- ings 18 the peripheries of the sleeves l6 maintains the fabric only in proximity to the points 1510f the'knife-edges l l, but sufficiently removed therefrom to preclude the possibllity of said knives catching the fabric or in any way causing injury thereto. As the goods pass over the roller 10?. the various sleevesect1ons of which it is composed rotate at somewhat different speeds, because theyare independent of each other, and in this manner aid the suction additionally in the walls of the adjoining sleeves would cooperate to loosenit from the fabric and permit the suction to draw it toward the 11 Kt advancing knife 13 which would thereupon cut such thread. v

It will be evident that the wheels 10 may be spaced along the shaft Ste coincide with.

any proportions which the arrangements of various designs of fabrlc-patterns may require. It Wlll be also evident that this machine may be built either independently, so I as to perform the cutting operation of the goods passed therethrough after it has been removed from the embroidering machine, 01' it may be connected up to the embroidering machine and the goods passed therethrough directly as it leaves the embroidering machine. The precise manner of winding the goods and advancing it over this machine is not shown, as it is believed to be obvious to those versed in this art that the only essential in putting the goods through this machine is to advance it over the sleeves 16 by any suitable well known means, such. as a set of rollers, that will unwind and wind on the goods during its passage over said sleeves. 7

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim 1. A machine for cutting in two the threads connecting the figures of embroidadapted to. chop said connected threads apart upon their being drawn thereto.

2. A machine for cutting in two the threads connecting the figures of embroidered fabrics preparatory to the mowing operation having the combination of thread cutting means including a plurality of knives, means to maintain the fabric in proximity to said cuttingmeans, means to move the fabric. said knives being arranged to move in a line which is parallel to the line of direction of travel of the fabric, means to draw said connected threads toward said k ves. and saidv knives being adapted to chop said connected threads apart upon their being drawn thereto. 7

A machine foncutting in two the threads connecting the figures of embroidcred fabrics preparatory to the mowing operation having the combination of rotatable cutting means, rota-table means to maintain the fabric in proximity to said cutting means, pneumatic means to draw said connected threads toward said cutting means,

and said cutting means being adapted to threads toward said cutting means, and said cutting means being adapted to chop said connected threads apart upon their being drawn thereto.

5. A. machine for cutting in two the threads connecting the figures of embroidered fabrics preparatory to the mowing operation having the combination of knives, means to maintain the fabric in proximity to said knives. means to advance the fabric, means to draw said connected threads toward said knives, and said knives being maintained in constant parallelism with said advancing fabric and adapted to chop said connected threads apart upon their being drawn thereto.

6. A machine for cutting in two the threads connecting the figures of embroidwcred iabrics preparatory to the mowing operznion having the combination of movable cutting means, means to maintain the fabric in proximity to said cutting means, means to advance the fabric in a direction opposite to the direction of movement of said cutting means. means to draw said connected threads toward said cutting means, and said cutting means bein adapted to chop said connected threads apart upontheir being drawn thereto.

7. A machine for cutting in two the threads connecting the figures of embroidered fabrics preparatory to the mowing operation having the combination of cutting means, movable means to maintain the fab ric in proximity to said cutting means, means to advance the fabric. means to draw said connected threads toward said cutting opposite to said means to maintain the fabme in proximity to said cutting means, means to draw said connected threads toward said cutting means, and said cutting means being adapted to chop said connected threads apart upon their being drawn thereto.

9. A machine for cutting in two the threads connecting the figures of embroidered fabrics preparatory to the mowing operation having the combination of a wheel having a plurality of cutting teeth, means to advance the fabric in proximity to Said teeth, and said teeth chopping said connected threads apart upon advancement of the fabric therealong.

10. A machine for cutting in two the threads connecting the figures of embroidered fabrics preparatory to the mowing operation'having the combination of cutting means, a movable wall for carrying the fab ric in proxin'iity to said cutting means having a plurality of openings, means to draw said connected threads through said openings and toward said cutting means. and

said cutting means being adapted to chop said connected threads apart upon their being drawn thereto.

11. A machine for cutting in two the threads connecting the figures of embroidered fabrics preparatory to the mowing operation having the combination of movable cutting means. means to advance the fabric in parallelism with said cutting means, a wall for carrying the fabric in proximity to said cutting means having a plurality of elongated openings arranged transversely to the direction of movement of the fabric and said cutting means, means to draw said connected threads through said openings and toward said cutting means. and said cutting means being adapted to chop said connected threads apart upon their being drawn thereto.

12. A machine for cutting in two the threads connecting the figures of embroidered fabrics preparatory to the mowing operation having the combination of a wheel having a plurality of cutting teeth. a sleeve surrounding said wheel adapted to hold the fabric in proximity to said teeth and having a plurality of openings. means to draw said connected threads through said openings and toward said teeth. and said teeth chopping said connected threads apart upon their being drawn thereto. 1

13. A thread cutting machine for embroidered goods having the combination of a revoluble wheel having a plurality of cutting teeth, a rotatable sleeve surrounding said wheel adapted to hold the goods in proximity to said teeth and having a plurality of openings, pneumatic-suction means to draw the waste threads of the goods through said openings and toward said teeth, and said teeth cutting said threads upon their being drawn thereto.

14. A thread cutting machine for em..-

broidered goods having the combination of a revoluble wheel having a plurality of cutting teeth, a rotatable sleeve surrounding said wheeladapted to hold the goods in proximity to said teeth and having a plurality of openings, means to advance the goods in a direction opposite to the direc broidered goods having the combination of a rotatable driving shaft, a plurality of wheels fixed on said shaft each of which has a plurality of cutting teeth, a rotatable .sleeve for each of said wheels and surrounding its teeth adapted to keep the goods in proximity to said teeth, each of said sleeves having a plurality of openings extending transversely to the direction of revolution of said teeth, means to advance the goods in a direction opposite to the direction of revolutionof said teeth, pneu niatic-suction means to draw the waste threadsof the goods through said openings and toward saidrteeth, and said teeth cutting said threads upon their being drawn thereto. 7

16. A thread cutting machine for embroidered goods having the combination of a rotatable driving shaft, a plurality of wheels fixed on said shaft each of which has a plurality of cutting teeth, means to advance the goods, means to maintain said goods in proximity to said teeth, said teeth cutting said threads as the goods is advanced, and said wheels being mountable interchangeably at various distances along said shaft for setting up for operation upon goods of different patterns.

j 17. A thread cutting machine for embroidered goods having the combination of a rotatable driving shaft, a plurality of wheels fixed on said shaft each of which has a plurality of cutting teeth, means to advance the goods, a sleeve for each of said wheels surrounding its teeth and adapted to keep the goods in proximity to said teeth, said teeth cutting said threads as the goods is advanced, and said wheels and sleeves being mountable interchangeably at various distances along said shaft for setting up for operation upon goods of different patterns.

18. A machine for cutting the threads connecting the figures of embroidered fabrics before the mowing operation having the combination of knives, means to maintain the fabric in proximity to said knives, means to advance the fabric, and said knives being maintained in constant parallelism with said advancing fabric and adapted to out said threads.

19. A machine for cutting in two the threads connecting the figures of embroidered fabrics before the mowing operation having the combination of means to advance the fabric, and means maintained in constant parallelism with said advancing fabric and adapted to chop said connected threads apart.

20. A machine for cutting in two the threads connecting the figures of embroidered fabrics before the mowing operation having the combination of cutting means to advance the fabric, means maintained in constant parallelism wlth sa1d advancing fabric and adapted to chop said connected threads apart, and means to draw the said connected threads toward said chopping means as the fabric is advanced.

Signed at the city of New York, in the county of New York and State of New York, this 20th day of June, A. D. 1919.

ERNEST MITTELHOLZER.

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