US749044A - No model - Google Patents

Description

PATENTED JAN. 5, 1904.

M. ESGUDER & A. FOREST.

EMBROIDERING MACHINE APPLICATION FILED JUNE 10, 1902.

3 SHEETS-SHEET 1.

NO MODEL.

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PATENTED JAN. 5; 1904.

M. ESOUDER & A. FOREST.

EMBROIDERING MACHINE.

APPLICATION FILED JUNE 10, 1902.

3 SHEETS-SHEET 2.

N0 MODEL.

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No. 749,044. PATENTED JAN. 5, 1904. M. ESGUDER & A. FOREST. EMBROIDBRING MAGHI-NE.

N0 MODEL APPLICATION FILED JUN; 10, 1902. 3 SHEBTS SHEET 3.

UNITED STATES Patented January 5, 1904.

MIGUEL ESCUDER AND ANTONIO FOREST, OF BARCELONA, SPAIN.

EMBROl DERlNG-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 749,044, dated January 5, 1904.

Application filed June 10, 1902.

To all whom it may concern:

Be it known that we, MIGUEL EsoUDER and ANTONIO FOREST, residing at Barcelona, in the Province of Barcelona and Kingdom of Spain, have invented certain new and useful Improvements in Embroidering-Machines; and .we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to improvements in embroidering-machines in which verticallyreciprocating needles operate in conjunction with horizontally-reciprocatinglugs; and the objects of our improvements are to provide means for the threads to be changed from one needle to another in order that every stitch may be made with a different thread or the thread may vary for a number of stitches, thus rendering it possible to combine a great number of designs which may be varied at will. To attain this object, our improved machine is fitted with the following devices: A plurality of needles formed with a spring hook at their upper ends, which opens at the rear part thereof, said needles being disposed to be vertically reciprocated in such a manner that at their upmostposition the hooks remain open to catch the threads, and at their downward movement each needle-hook strikes on the beveled flange of the fixed guide-plate, whereby the hooks are closed when the needles pass down through the fabric. Over said needles a plurality of loopers are suitably disposed to execute two difierent 'movementsviz., a forward and backward motion through or between the series of needles and a. lateral or right and left motion, whereby the loopers may run the distance between two-or more needles. The motion is imparted to the loopers, so that the threads may change from one needle to another and that the threads may be passed in the needle-hooks accordingly to the design to form the desired stitches. Each needle makes a series of knitting-stitches disposed in a right line, so that if the machine has two, four, six, eight, or ten needlessit will execute two, four, six, eight, or ten series of knitting-stitches. As the needles are threaded and unthreaded at every Serial No. 111,080. (No model.

stitch and as the threads by their lateral motion may change from one needleto another, it is obvious that every stitch maybe made in a difierent color or the colors may vary for a number of stitches, thus ,rendering it pos-' sible to combine a great number of designs which may be changed at will. The cloth or fabric to be embroidered runs forward at every stitch by means of a lower clamp-bar so operated as to move the fabric forward in a similar manner as is common in sewingmachines.

In the accompanying drawings we represent our new embroidering-machine having ten needles and twelve lugs.

Figure 1 is a front elevation of the machine. Fig. 2 is a plan thereof. Fig. 3 is a vertical section on line a z of Fig. 1. Figs. 4, 5, 6, and 7 are detail sections, at an enlarged scale, showing the different positions of theneedles and lugs to form the stitches.

The needles 3 are formed with a point 3' at their upper end, which forms a spring-hook 3", wherein the thread is passed. The lower end of the needles is bent at right angles, thus forming a tail whereby the needles are strongly secured to the needle-holder.

The needle-holder consists of a metal plate 6, sliding betweenvertical guides 7 and formed with longitudinal grooves to receive the needle-shanks and with horizontal transverse holes to insert the needle-tails, so that the needles are held at the proper position and at an exact distance apart from each other and are firmly secured in place by means of a guard-plate 5.

, The lower end of the guard-plate 5 is connected by means of an elastic sheet 10 to a lever 25, which operates the vertically-reciprocating plate 6 and causes the needles to go first up through the fabric and rest before the threads are threaded in the needle-hooks and then down through the fabric to form the stitches.

The elastic sheet 10, connecting the plate 6 to the lever 25, is formed with enlarged holes, whereby the level of the needles is exactlydeterminated and secured. The lever 25 oscillates on pin 8 by means of a rod 9, connected to an intermediate point of said lever and secured to or forming a casting with an eccentric 9, mounted on shaft 45, whereby a ICO reciprocating motion is imparted to the lever 25, and consequently to the needles.

Shaft 45 is formed with a cam 9", against which an angle-bar 28 bears, thus causing the clamp-bar 27 to move forward and backward in such a manner that the toothed part 11 thereof may push the fabric forward at each stitch.

The clamp-bar 11 27 is supported by an angle-bar 28, and its position is regulated by a screw 29. The rear end of said clamp-bar 27 bears on a pin 30, which serves for a guide when it moves to and fro. The spring 31 tends to replace the clamp-bar 27 to its original position.

Loopers 4 are formed of metal rods provided with an eye at their lower flattened ends and with a tail at their upper extremities. They are firmly secured between plates 4 and 4, provided with longitudinal grooves to receive the lugs, so that they are held from each other at exactly the same distance as are the needles 3. The guard-piece 4 is secured by a screw to a plate 4", which carries two little ribs 32 and 32 with holes to pass and guide the threads. Plate 4 is further provided with an arm 15 and friction-roller 15, bearing on cam 34 and constantly acted upon by a spring 33, which tends to throw the roller 15 against the cam.

The plate 4" may vertically oscillate and longitudinally slide upon the shaft 12, properly'supported on bearings 12 on the frame 1 of the machine. Said bearings 12 support also another shaft 13, placed behind shaft 12 and carrying a cam 13, formed with a camgroove 13", engaging the friction-roller 15 of arm 15 of the plate 4". The pitch of said cam-groove is so calculated as to force the loopers 4 to run from one side to another side of the needles to thread them on. Cam 34 moves so that it forces the loopers 4 to oscillate and run from the front to the back of the needles, so as to permit the threads to be passed round the needles and to be caught by the needle hooks after entering therein by the lower opening thereof.

Besides the several motions hereinbefore stated for the plate 4" and loopers 4 a further motion is imparted thereto by shaft 13 by means of the cam 13' and arm 14, which forces the'plate to run lengthwise on shaft 12 in order to change the position of the loopers, respectively, to that of the needles, whereby it becomes possible to change at will at any moment the threading of each needle.

Shaft 13 bears on a slide 35, having a roller 35 and sliding on a rod 36, while the roller 35 is operated by a chain 38, provided with bosses or blocks 38, suitably mounted thereon. Thus the shaft 13, the cam 13', and the loopers 4 are so moved that each needle may be threaded on with the thread of the desired loopers. Rotary motion is imparted to the shaft 13 by means of the gear- wheels 44, 43, and 42, the latter being mounted on shaft 45, which bears the driving-pulley 41.

A ratchet-wheel 37 is fixed on the same shaft supporting the chain-wheel 38, the pawl 39 thereof being hinged to the inner part of a slide 22, provided at both ends with rods 22, traveling in bearings 23 and 23, secured to the frame of the machine. Rigidly secured to the upper rod 22 is a ring or die 24, which by means of a pin 24 is connected to the upper end of a vertical side link 40, connected by its lower end to the fork 46' of a horizontal rod 46, having an arm 53 with a friction-roller 53 hearing on a cam 54. This cam pushes the roller 53, links 46 and 40, and pawl 39 upward and causes the ratchetwheel 37 to revolve the distance of one tooth. A spring 26 constantly pushes the pawl 39 toward the ratchet-wheel 37, which when revolved is prevented turning more than the necessary distance by means of a brake composed of an elastic strip 55, secured to the shaft of the wheel bya screw 55 and provided at both ends with a packing 55".

The length of the chain 38 as well as the size and shape of the chain-blocks 38 may vary at will in order to combine a great number of designsin the most convenient manner.

At the upper front part of the machine is a tension device or apparatus which is represented in front elevation in Fig. 1 and in vertical section in Fig. 2 of the accompanying drawings. Said apparatus is rigidly secured to the front part of the frame of the machine and consists of three revolving cylinders 46, 47, and 48, from which the middle one, 47, may be horizontally adjusted by the screws 51. The threads are passed before the cylinders 46 and 48 and behind the cylinder 47. Thus the tension of the threads is thoroughly regulated at will, owing to the position of cylinder 47, respectively, to that of cylinders 46 and 48. Guide- bars 49 and 50 are also provided for the threads, which pass through further guides 20", 21, 32, and 32 before reaching the lugs 4.

The several movements that the needles and loopers execute to form the stitches will be clearly understood by referring to Figs. 4, 5, 6, and 7 of the accompanying drawings. Fig. 4 represents the needle 3-in its upmost position after having passed through the fabric 52, while the looper 4 is at the back before passing the thread around the needle.

In Fig. 5 the needle 3 goes down while the looper 4 has been already pushed forward, because of the movement imparted to the looperholder by the operative cam 34, Fig. 3. When the thread 56 has once passed before the needle, the plate 4 is laterally displaced by cam 13, which forces the threads to pass round the needles. Then the cam 34 forces the loopers 4 to go back again and recover their former position, as shown at Fig. 6. When the threads are passed round the needles, the latter move downward and catch the threads,

and the spring-hook 3" strikes against the needle. Thus the hook when descending passes through the same hole bored by the needle -point at its first upward passage through the fabric. Fig. 6 represents the needle when the needle-hook is closing to enable it to pass free through the fabric. Fig. 7 represents the needle in its lower position, after passed through the fabric,at the moment when the indented clam p-bar 11 27 pushes the fabric forward in order that at the next upward movement of the needle a new stitch may be produced.

From the above description it will be seen that the needles are threaded stitch after stitch, and consequently the threads passed therein may be changed at will at every stitch.

The press-bar 17, which holds the fabric against the clamp-bar 11 27 and against the fixed base-plate 2, is rigidly secured to an arm 17, carried by the rod 19, operated by cam 16, which may be rotated on a pin-16 to push against the pin 16 on said rod 19, whereby said arm and press-bar are lifted. The arm 17 is forked at one end to engage the bracket 18 of the frame, which serves as a guide for the arm 17 when it moves up and down.

Having thus described our invention, What we claim as new, and desire to secure by Letters Patent, is

1. In an embroidering-machine, the combination of a main shaft, a plurality of needles reciprocated vertically by said shaft, a plurality of loopers pivotally mounted above said needles, tension mechanism for supplying thread to said loopers, cam mechanism connected to said loopers, whereby a horizontal oscillatory movement will be imparted to said loopers to form a loop upon each of said needles before its return movement, and mechanism for shifting said loopers laterally, relatively to said needles.

2. In an embroidering-machine, the combination of a main shaft, a plurality of needles reciprocated vertically by said shaft, a plurality of loopers pivotally mounted above said needles, tension mechanism for supplying thread to said loopers, cam mechanism connected to said loopers, whereby a horizontal oscillatory movement will be imparted to said loopers to form a loop upon each of said needles before its return movement, and mechanism interposed between and cooperating with said main shaft and cam mechanism for automatically shift-ing said loopers relatively to said needles.

3. In an embroidering-machine; the combination of a plurality of needles, a support therefor, means for operating said needles, an elastic sheet connecting said support to said operating means, loopers, cam mechanism for imparting an oscillatory movement to said loopers, pattern mechanism for shifting said loopers laterally, and a pawl-and -ratchet mechanism for operating said pattern mechanism.

4. In an embroidering-machine, the combination of a plurality of needles, means for reciprocating said needles, loopers, mechanism for imparting an oscillatory movement to said loopers, and means for bodily shifting said mechanism and said loopers laterally, substantially as described.

5. In an embroidering-machine, the combination of a plurality of reciprocating needles, loopers therefor, cam mechanism for oscillating said loopers, and means for bodily shifting said cam mechanism and said loopers in a lateral direction, substantially as described.

6. In an embroidering-machine, the combination of a plurality of needles, fabric-holding means, common means'for reciprocating said needles and shifting said fabric, loopers for said needles, mechanism for operating said loopers, and means for bodily shifting said operating mechanism and said loopers laterally, substantially as described.

7. In an embroidering-machine, the combination of needles, means for reciprocating the same, a series of loopers for said needles loosely pivoted on a shaft, cam mechanism for operating said needles, a shaft to which said cam mechanism is secured, and means for laterally shifting said shaft thereby shifting said cam mechanism and said loopers.

8. In an embroidering-machine, the combination of cam mechanism, a shaft carrying said mechanism, and means for bodily shifting said shaft, consisting of a slide provided with a roller, pattern mechanism adapted to I00 contact with said roller, means for driving said pattern mechanism, and a spring for returning said shaft to its original position.

9. In an embroidering-machine, the combination of cam mechanism, a shaft on which 105 said mechanism is mounted, driving means for said shaft, means for shifting said shaft laterally, consisting of a slide provided with a roller, and pattern mechanism adapted to contact with. said roller, pawl-and ratchet no mechanism for actuating said pattern mechanism, and connections between said pawland ratchet mechanism and said driving means.

In witness whereof we have hereunto set r15 our hands in the presence of two witnesses.

MIGUEL ESCUDER. ANTONIO FOREST.

Witnesses:

STANLEY HARRIS, JAMIE COSTELLO.

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