US419221A

US419221A - schneider

Info

Publication number: US419221A
Authority: US
Publication date: 1890-01-14
Anticipated expiration: 1907-01-14

Description

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A. M. SCHNEIDER. EMBROIDERING MACHINE.

Patented Jan. 14,1890.

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EMBROIDERING MACHINE. 110.419,221. Patented Jan. 14, 1890.

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EMBROIDERING MACHINE.

110.419.221. Patented Jan. 14,1890.

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UNITED STATES.

PATENT OFFICE.

ALEXANDER M. SCHNEIDER, OF NEIV YORK, N. Y.

EMBROIDERZINGMACH|NE- SPECIFICATION forming part of Letters P Application filed June 24, 1889.

To all whom, it may con/cern:

Be it known thatl, ALEXANDER M. SCHNEI- DER, of New York city, New York, have invented an Improved Sewing Machine, of which the following is a specification.

This invention relates to a sewing-machine for forming braid-like ornament-s or borders upon fabrics.

The machine is provided with two needles, and in front of the needles a pair of oscillating thread-carriers, reciprocating horizontally, feed the chain-threads to the needles, so as to form loops upon the face of the fabric. These loops are sewed down by the needlethreads.

The invention consists in the various features of improvement more fully pointed out in the claim.

In the accompanying drawings, Figure lis a side elevation of my sewing-machine above the work-table. Fig. 2 is a vvertical crosssection on the line @c x, Fig. l; Fig. 3, a top view of rod or lever h3. Fig. 3a is a cross-section on line yy, Fig. 1. Fig. 4 is a detail top View of the thread-carriers; Fig. 5, a top View of the feed-plate; Fig. 6, an end view of the thread-carriers. Figs. 7, S, and 9 are enlarged views of three different kinds of work produced by the machine. Figs. 10 and 1l are diagrams showing the thread-carriers in their two eXtreme positions and the position of the various threads.

The letter a represents the work-table of a sewing-machine of any suitable construction, and provided with two needles b Z9 in its head c, that operate in conjunction with a shuttle or hook-thread, as usual. The needles b b receive their threads CZ CZ from spools e c. In front of the two needles ZJ b there are placed a pair of thread-carriers ff', secured to a pair of reciprocating and oscillating levers, operating in manner hereinafter described. The object of these thread-carriers is to cross the threads that are to be secured upon the face of the fabric, and which I term the chainthreads, and to present them to the needles. The spools g of these chain-threads (preferably siX in number) pass their threads through a slotted shield lala, which has for its object to keep the threads properly separated. Thence the threads enter a number of guidetubes hw, that conductthem to the threadatent No. 419,221, dated January 14, 1890.

Serial No. 315,316. (No model.)

carriers f f. Normally the machine sews with six chain-threads, and in order to more clearly understand the invention inspection of 9 is invited, which shows the normal work. IIere it will be seen that two chainthreads t and tginterloop around one needlethread, while a similar pair of chain-threads f3 and tl interloop around the second needlethread. Finally, two chain-threads t5 and t form central crosses and are engaged by both needlethreads- Now, referring back to the machine, each carrier ff has preferably three perforations or thread-guides from the front toward the rear-.viz., toward the needles. The guides of carrier f are marked s S2 s3 and those of carrier f are marked u u2 a3. The two end perforations of each carrier-viz., the perforations s and S3 and the perforatious u and u3- are of the same length; but the central perforations s2 and u2 terminate in rearwardlyprojecting tubes s4 and u, and thus feed their threads to the needles at a dierent plane than the end perforations. In other words, each thread carrier is provided with two kinds of thread-guides, one kind (8 s3 u us) being shorter than the other kind (S2 s4 u2 a4) or eX- tending less far to the rear. This feature of the construction is of importance, as it so separates or spreads the several threads around the needles that a proper space w is created for the needles to descend.

The threads t t2 t3 t* 5 t", after leaving the guide-tubes hl, are passed through the guides of the thread-carriers f f in the following way, Fig. l0: Thread t enters perforation s of guide f. Thread t2 enters perforation u of guide f. Thread t3 enters perforation S3 of guide f. Thread t* enters perforation a3 of guide f. Thread t5 enters perforation s2 of guide f. Thread t enters perforation u2 of guide f. The motion to be imparted to the thread carriers f f is such that they should reciprocate horizontally in front of both the needles simultaneously in opposite directions, and that they should at the same time move away from and toward the needles. This latter motion is necessary, as in their two extreme positions, Figs. 10 and 11, the tubes S4 a4 project behind the needles, and therefore, if the thread-carriers would simply reciprocate, the tubes would interfere with IOO vIO

'the cams his hm.

the needles. Therefore, starting with Fig.

l0, which shows one extreme position, the.

vthread-carriers are thrown forward, (toward the operator,) as shown in Fig. 4, to clear the needles before they occupytheir other eX- treme position, illustrated in Fig. 11.

. The vibrating and reciprocating motion may be imparted to the thread-carriers by any cam mechanism. That which I have shown, more particularly in Figs. 1, 2, 3, and 3a, consists of the following arrangement: Upon the spindle h, driven from the workshaft, are keyed the two cogs h and h2, intergearing, respectively, with cogs h3 and h4.

The cog h3 is mounted upon an arbor h5, which is thus revolved. The arbor h5 is provided with a pair of cams h6 k7, projecting in opposite directions and engaging levers h9 and he. These levers pass through the straps hw, Fig. 3, swiveled to their supporting-frame 72.11. Thus the levers are reciprocated. To the free ends of levers hs h" the thread-carriers ff are secured.

'The vibrating motion is imparted to the levers hs h9 by the cog-wheel h4, as follows: The cog-wheel h4 is fast upon a sleeve 71,12, snrrounding arbor h5. To this sleeve are secured These cams project in the same direction', and by engaging levers hs hg vibrate these `levers simultaneously. The size of the cogs isV such that each lever is reciprocated once for each complete motion of the needle, while it is vibrated once for each two motions of the needle.

With reference to Figs. 1l and 5 the levert represents the work-plate, j the-feed-dog, and 7c the presser foot. A peculiarity of this presser-foot is that it is perforated, so that the needles b b pass through it, and that between the needles the presser-foot is provided with a fiat lip le', to hold down the work at the center.

The operation of the machine will be readily understood.

The threads being passed through the thread-guides, as already described, and the cloth being properly introduced beneath the presser-foot, the machine is set in: motion. The two most right-h and threads of the threadcarrers-wviz., the threads passing through the guides s3 its-will cross and recross around one needle, while the two most left-hand threads will cross and recross around the other needle. The central threads will be carried across both needles. Fig. ,10 shows the position of the parts at one descent of the needles. After the formation of the stitch the carriers f f, by the vibration of their le- 'vers,` are brought forward to clear the needles, 4as in Fig. 4L. At the same time the carriers cross in front of the needles, and are then again thrown backward to again bring their tubes back of the needles, as in Fig. 11.

The ornamental borders produced by this Amachine may be varied by simply taking away some of the threads. Thus in Fig. 7 all the four end threads have been taken out of the machine, and the braid-like ornament is simply formed by the two central threads 5 t6.

In Fig. 8 the four end threads t t2 t3 t4 are retained, while but one central thread t5 is used, the other one being omitted.

If desired, a cord m may be fed under the work-plate, which is secured to the under side of the fabric to strengthen the same.

What I claim is- 1. The combination of a sewing-machine having a pair of needles with a pair ofthreadcarriers in front of the needles, and with means for reciprocating the thread-carriers simultaneously in opposite directions in front of the needles and backward and forward at the sides of the needles, substantially as specified. y

2. The combination of a sewing-machine having a pair of needles with a pair of perforated thread-carriers having rearward extensions 84 a4, adapted to deliver the thread behind the needles, and with means for reciprocating the thread-carriers simultaneously in opposite directionsvin front of' the needles and backward and forward at the f sides of the needles, substantially as specified.

3. The combination of a sewing-machine having a pair of needles with a pair of threadcarriers, each thread-carrier being provided with thread-guides of unequal length, and

' with means for reciprocating the thread-carriers laterally in front of the needles and backward and forward at the sides of the needles, substantially as specified.

4. The combination of a sewing-machine having a pair of needles with a pair of vibrating and reciprocating levers, and with a4 pair of thread-carriers secured thereto, each thread-carrier being provided with threadguides of unequal length, substantially as specified.

5. The combination of a sewing-machine having a pair of needles with a pair of vibrating and reciprocating levers, a pair ot' thread-guides secured thereto, a th read-dividing slotted shield, and a series of thread-carrying tubes, substantially as specified.

6. The combination of a sewing-machine having a pair of needles with a pair of vibrating and reciprocating levers, a pair of.'

thread-guides secured thereto, and with a perforated presser-foot having a lip between the needles, substantially as specified.

ALEXANDER M. SCHNEIDER. Witnesses:

F. v. BRIEsEN, WM. WAGNER.

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