US735559A - Embroidering-machine. - Google Patents

Description

No. 735,559. v TATENTED AUG. 4, 1903. F. MUELLER.

EMBROIDERING MACHINE.

v APPLICATION FILED JAN/13V. 1903.

N0 MODEL.

6 SHEETS-SHEET 1.

HIIIIIIIIIWIII $513440 0920: K 140044 507; I M 55 55W 'No.735,559. PATBN-TBD AUG. 4, 1903.

F. MUELLER. EMBROIDERING MACHINE. APPLICATION FILED JAN. 13. 1903. y no MODEL. a SHEETS-SHEET 2.

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I PA-TENTED. AUG. 4 1903.

v I. MUELLER. EMBROIDERING MACHINE.

APPLICATION FILED JAN. 13. 1903.

5 SHEETS-SHEET a.

N0 MODEL.

PATENTED AUG. 4, 1903.

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APPLICATION FILED JAN. 13, 1903.

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No. 735,559. PA TENTED AUG. 4, 1903 I F. MUELLER. 'EMBROIDERING MACHINE. APPLICATION FILED JAN. 1a. 1903.

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Jay 14 UNITED STATES Patented August 4;,

PATENT OFFICE.

FRIEDERIOK MUELLER, OF NEWARK, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

,EMBROIDERING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 735,559; dated August 4, 1903. Application filed Ja r' a190s. Serial lie-138.875. (N model.)

To aZZ whom it may concern.-

Be it known that I, FRIEDERICK MUELLER, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Embroidering Machines, of which the following is a specification,refe1-- ence being had therein to'tlie accompanying drawings.

This invention ,relates to a machine for fancy stitching and embroidering, andhas for its object to provide a machine of comparatively simple construction by which a large variety of ornamental or embroidering seams may be produced merely by simple adjustments and without change of parts and which admits of a great increase in the number of ornamental or embroidering seams by the use of interchangeable cams.

The improved machine in its preferred form comprises a needle-bar provided with two needles mounted to reciprocate vertically in a horizontally swinging needle bar frame or gate to which is imparted a step-by-step movement across the line of the feed of the work for several successive stitches in each direction alternately, and cooperating with the two needles and their loop-taking device or devices is a horizontally-swinging thread-carrier which interweaves an embroideringthread back and forth into the ornamental seam and crosswise of the stitches formed by the needles and loop-taker. The step-by-step horizontal movements of the needle-bar and needles are produced and controlled by an intermittingly-rotating cam connected with the swinging needle-bar frame or gate and operated from a continuously-rotating camwheel geared to the main shaft of the machine and actuating an arm or lever connected by a pitman to a clutch device which imparts the proper movements to the said intermittingly-rotating cam. The horizontally-swinging embroidering-threadcarrier is preferably actuated from a peripheral cam-groove in the said continuously-rotating cam-wheel.

In the accompanying drawings, Figure 1 is a front side view of the improved machine with the work-plate in section. Fig. 2 is a plan view of the same with part of 'thearm broken out. Fig. 3 is a front end view of the machine with theface-plate removed. Fig. 4 is a detail view, partly in horizontal section, to show the mechanism for operating the embroidering-thread carrier. Figs. 5 and 6 are detailed views of different forms of intermittingly-rotating cams for moving the needlebar frame or gate laterally. Fig. 7 is an edge view of the continuously-rotating cam-wheel, showing the cam-groove from which the thread-carrier is operated. Figs. 8, 9, 10, and 11 illustrate different formsof seams made by the machine.

Referring to the drawings, 12 denotes the bracket-arm, and 13 the work-plate, of the machine. Mounted in the upper part of the arm 12 is the main shaft 14, provided at its forward end with a crank 15, connected by a pitman 16 with the needle-bar 17, carrying the needles l8 and reciprocating vertically in a horizontally-swinging frame or gate 19, pivoted vertically on center screws 20. The shaft 14 is provided with a bevel-gear 21, meshing with a larger bevel-gear 22, rotating at half the speed of the driving bevel-gear 21, fixed to said shaft. Rig-idly connected to or integral with the gear 22 is a cam-wheel 23, having in its front face a cam-groove 24, entered by a pin or roller-stud 25 on a swinging arm or lever 26, fulcrumed at 27 by a rocking shaft or stud suitably journaled in the bracket-arm 12.

The shaft 14 carries a second bevel-gear 2S, meshing with a similar bevel-gear 29 at the upper end of a vertical shaft 30, having at its lower end a crank 31, connected by a pitman 32 to a rocker, from which is operated the oscillating shuttle 33, cooperating with the two needles 18. The mechanism thus far described, as also the feeding mechanism operated from the vertical shaft 30, has long been in use and is familiar to those skilled in the art.

Suitably supported from the bracket-arm 12 is'a cam-wheel 34, to which an intermittingly-rotating movement is imparted from the'swinging arm or lever 26 through a pit- :man 35, connected at its rear end in a wellknown manner to a slide adjustable in a groove in the arm or lever 26, said pitman being jointed at its forward end to the arm 36 of a three-armed rocker movable independently of the said cam-wheel 34 and having arms 37, connected by springs 38 with clutchdogs 39, adapted to bite on the flange of the said cam-wheel when the said rocker is moving in one direction, but being released from holding engagement with said flange when the said rocker is moving in the opposite direction, said rocker and clutch-dogs thus imparting an intermittent rotating movement to said cam-wheel. The speed of rotation of the cam-wheel 34 may be varied by adjusting the point of connection of the rear end of the pitman with the swinging arm or lever 26, or the rotation of the said cam-wheel may be arrested altogether (for sewing straight seam s) by bringing the connection ofthe said pit-man to a point coincident with the fulcrum of the arm or lever 26, as will be understood.

l. e cam-wheel 34 is provided in its rear face with a cam-groove 40, entered by a pin or roller-stud 41 on a sliding bar 42, jointed at its forward end to an arm or projection 43 on the swinging needle-bar frame or gate 10, and thus as the said cam-wheel is slowly rotated a step-by-step swinging horizontal movement across the line of the feed of the work will be imparted to the said frame or gate and to the needle-bar and needles carried thereby, so as to produce a-series of stitches successively displaced from the line of the feed of the work in one direction and then a similar series of stitches in the opposite direction to produce scallops or serpentine seams, the figures of which will be varied according to the speed of rotation of the cam-wheel 34 or according to the particular form of the camgroove in said wheel, the figures of the seam being still further varied, if desired, in either case by varying the usual work-feed. The continuously-rotating cam -wheel 23 is provided with a peripheral cam-groove 44, entered by a pin or roller-stud 45 on one arm of a bell-crank 46, having a pivotal shank or shaft 47 journaled in the bracket 48, said bellcrank being connected by a pitman 49 to an arm 50 on a rocking sleeve 51, mounted on the presser-bar 52 and having a second arm 53, to which is attached an embroidering-thread carrier 54. The said tln-ead-carrier 54 has at its lower end an inwardly-turned finger which swings closely adjacent to and just in front of the needles 18, said finger having an eye or eyes through which an embroiderin g-thread passes in such a manner that as the said finger swings to and fro the embroideringthread is disposed back and forth across the line of the double seam and is interwoven with and stitched down on the upper side of the work by the needlethreads, the said thread-carrier pausing at each end of its throw in either direction while the work is being fed, with the extreme end of its threadfinger slightly behind the needles, so that as the needles descend one needle or the other will come down in front of and thus lay its thread over the last lap of embroideringthread disposed across the double seam by the said finger.

The embroidering thread or silk preferably runs from the spool 55 through a thread-guide 56, and thence through the thread-eye of a pull-off device 57, attached to the swinging arm or lever 26, thence through an intermittent tension device 58 to a constant check tension device 59, and thence to the swinging embroidering-thread carrier, by which it is guided to the work. The main shaft 141s provided with a cam 60, which engages the inner end of the spring-pressed stem of the intermittent tension device, so as to force the sprin g-pressed tension-disk outward,and thus relieve the stress of the main or intermittent tension on the embroidering-thread at the moment when the said embroidering-thread is being laid across in front of the needles, the main tension on the embroidering-thread being restored before the thread-carrier quite reaches the end of its stroke in eitherdirection, and thus the embroidering-thread is drawn taut into the stitches formed by the needles.

From the foregoing it will be understood that a great variety of ornamental figures may be made by the improved machine. Thus with the intermittiugly-rotating cam-wheel 34, provided with a heart-shaped cam-groove, as shown in Fig. 5, wavy or sinuous seams, such as are shown in Fig. 8, will be produced, the number of right-and-left stitches in each figure, or the size of the figures, being determined by the speed of rotation of the said camwheel, depending on the position of ad j ustment of the connection of the pitman 35 with the swinging arm or lever 26. The greater the speed of rotation of said cam-wheel the smaller the figures of the wavy or sinuous seams. lVith a cam-groove in the wheel 34 shaped as shown in Fig. 6 scalloped embroidering-seams, as shown in Fig. 9, will be produced, the scallops being smaller or larger, accordingly as the cam-wheel rotates faster or slower. If the point of connection of the pitman 35 be lowered, so as to be coincident with the fulcrum or center of movement of the swinging arm or lever 26, the cam-wheel 34 will remain stationary and a straight embroidery-seam, as shown in Fig. 10, will be produced, while if the embroidering-thread be omitted from the tln'ead-carrier or the latter be removed from the machine parallel seams, which may be either straight, sinuous, or scalloped, as may be desired, (see Fig. 11,) may be produced. All of these diiferent figures may be still further varied by varying the length of the machine-feed or by providing interchangeable cam-wheels 34, having cam-grooves of different forms from those herein shown, and thus the embroidering-figures which may be produced by the improved machine may be increased almost indefinitely.

Having thus described my invention, I claim and desire to secure by Letters Patcnt 1. In a fancy stitching or embroidering machine, the combination with a stitch-forming mechanism comprising a needle-bar and two needles, of a horizontally or laterally movable frame or gate in which said needle-bar reciprocates vertically, an intermittingly-rotating cam connected with said needle-bar frame or gate and serving to impart several successive steps or movements in opposite directions, and

across the line of the feed of the work, to said frame or gate and to the said needle-bar and needles, means for operating said cam, a thread-carrier, and means for moving said thread-carrier to and fro in front of said needles so as to interweave an embroideringthread with the sewing-threads of said needles.

2. In a fancy stitching or embroidering machine, the combination with a stitch-forming mechanism comprising a needle-bar and two needles, of a horizontally or laterally movable frame or gate in which said needle-bar reciprocates vertically, an intermittingly-rotating cam connected with said needle-bar frame or gate and serving to impart several successive steps or movements in opposite directions, and across the line of the feed of the work, to said frame or gate and to the said needle-bar and needles, adjustable means for operating said cam, so as to vary the speed of rotation, a thread-carrier, and means for moving said thread-carrier to and fro in front of said needles so as to interweave an embroideringthread with the sewing-threads of said needles.

3. In a fancy stitching or embroidering machine, the combination with a stitch-forming mechanism comprising two needles and a needle-bar, of a horizontally -movable frame or part in which said needle-bar reciprocates vertically, an intermittinglyrotating cam connected with said frame or part and serving to impart a series of successive step-by-step movements alternately in opposite directions to said needle-bar frame or part, an embroidering-thread carrier movable to and fro in front of said needles across the line of the seam, a continuously-rotating cam-wheel, and connections between said cam-wheel and said intermittingly-rotating cam and saidthreadcarrier whereby the two lastnamed devices are operated.

4. In a fancy stitching or embroidering machine, the combination with a stitch-forming mechanism comprising two needles and a needle-bar, of a horizontally-movable frame or part in which said needle-bar reoiprocates vertically, an intermittinglyrotating cam connected withsaid frame or part and serving to impart a series of successive step-bystep movements alternately in opposite directions to said needle-bar frame or part, an embroidering -thread carrier movable to and fro in front of said needles across the line of the seam, a continuously-rotating cam-wheel, and connections between said cam-wheel and said intermittingly-rotating cam and said threadcarrier whereby the two last-named devices are operated, the connections of the said continuously-rotating cam-wheel with said intermittingly rotating cam being adjustable to permit the speed of rotation of said intermittingly-rotating cam to be varied to vary the embroidery figures.

In testimony whereof I affix my signature in presence of two witnesses.

FRIEDERIGK MUELLER.

WVitnesses:

HENRY J. MILLER, H. A. KORNEMANN.

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