US403221A - saureb - Google Patents

Description

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w I 1 1 l I l 4 I 1 I I 1 I 1 l I I I I I I I I I l I l 1 l l I I I I 4 Patented May 14, 1889.

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(No Model.) 5 Sheets-Sheet 2. I

A. SAURBR & E. LEUT HOLD. I

EMBROIDERING MACHINE.

No. 403,221. PatentedMay 14:, 1889.

N PETERS. P'MlwLilMgnphcr, Walhingion, D. C.

(No Model.) 5 sheets-sheet 3.

A. SAURER & E. LEUTHOLD.

EMBROIDERING MACHINE.

No. 403,221. r Patented May 14,-1889.,

5 Sheets- Sheet 4,

(No Model.)

A. SAU-RER & E. L'EUTHOLD.

EMBROIDERING MACHINE.

(o-Lithughphc (No Model.) 5 Sheets-Sheet 5.

A. SA'URER & E. LEUTHOLD; EMBROIDERING MACHINE.

No. 403,221.. Patented May 14,

N. PETERS, Phowmu u her, \Vashinglon. n c.

UNITED STATES PATENT ()FFICEQ ADOLPH SAURER AND ERNST LEUTHOLD, OF ST. GALLE, SWITZERLAND.

EMBROlDERlNG-MACHINE;

SPECIFICATION forming part of Letters Patent No. 403,221, dated May 14; 1889.

Application filed May 16, 1888- Serial No. 274,059. (No model.)

To all whom it may concern.-

Be it known that we, ADOLPH SAURER and ERNST LEUTHOLD, resident in St. Galle, Switzerland, have invented new and useful Improvements in Embroidering-llachines, of which the following is a specification.

Our improvement relates to embroideringmachines designed to embroidersmall designs upon fabricssuch, for instance, as points, stars, leaves, and similar figures.

WVe will describe in detail an embroideringmachine embodying our improvement, and then point out its novel features in claims.

In the accompanying drawings, the machine is represented in Figure 1 in front elevation. Fig. 2 is a horizontal section of the machine in the line w to of Fig. 1. Fig. 3 represents an end elevation. Figs. 4 to 15 represent several parts of the machine in detail.

Motion is imparted to the machine by means of the pulleys U U, which are connected by a belt with suitable transmitting-gear or direct with a motor. The said pulleys U U, together with a toothed wheel, R, and pinion T, connected with them, run loose upon the driving-shaft V. The said toothed wheel R engages with a pinion, T, keyed upon a second shaft, Z, upon which is also fixed a second toothed wheel, R, which engages with the pinion T on the driving-shaft, so that according as the driving-belt is shifted by a fork X upon one or the other of the pulleys U or U the shaft Z, to which is also secured a wide pulley, Y, makes a greater or less number of revolutions. When, for example, the belt is putupon the pulley U, to which the toothed wheel R is fixed, the shaft Z is caused to rotate by the said wheel T, and in this case the number of revolutions of the shaft Z, and with it of the wide pulley, are greater. If the belt, 011 the other hand, is put on the pulley U ,the pinion T drives the toothed wheel R,

and with it the shaft Z and wide pulley Y, at

a less speed. The rotation of the shaft Z is transmitted by the wide pulley Y to one or the other of two pulleys, E E, one of which is loose and the other fixed upon a third shaft, M. From the fixed pulley E, or from the third shaft M itself, the motion of the whole mechanism is effected. When the latter is to be put out of action, the belt is shifted upon the loose pulley E. Upon the front end of the partial rotation with the said ratchet-wheel A. By these pattern-disks the frame G, for the material to be embroidered, is caused to make a motion in a vertical as well as horizontal direction, and on the shape or on the undulated periphery of these disks depends the pattern to be embroidered in each case. The said frame G is moved by the patterndisks B B in the following manner:

First. The motion of the frame in a vertical direction. Upon the edge of the first disk B (seeFigs. 2 and 3) is arranged a frictionroller, 0, carried by the end of a lever, O, which is keyed upon the front end of the shaft D. The said shaft D is supported so that it can. turn, and is provided with lateral arms A A, (see Figs. 1 and 2,) upon which the frame G. is supported by wheels 0. When turning thesaid pattern-disk B, the lever O, by means of the undulating edge of the said disk B, is caused to move through a greater or less angle. This motion is transmitted to the shaft D, so that the latter makes a partial rotation ,in which, according as this takes place from the right to the left, or vice versa, the frame G standing upon the arms A makes an up or down motion. Upon the said shaft D is moreover arranged a balance-lever, C, (see Fig. 2,) with which a spring, B secured on the machine-frame is connected. By the power of the said spring the weight of the frame G is for the'most part balanced, consequently the lever O, with the friction-roller 7, does notbear too strongly against the first pattern-disk B.

Secondly. The motion of the frame in the horizontal direction. Upon the second patterndisk B bears with the friction-roller h an irregularly-shaped bell-crank lever, H, (see Figs. 1, 2, and 3,) adapted to turn upon a pivot,

X, in a bracket attached to the machine. With one end of this bell-crank lever H is connected a draw-rod, c, which in turn is connected at y with the frame G. The bellcrank lever H is drawn down by suitable springs, f f, so that the friction-roller h, secured to the said lever H, always bears firmly upon the edge of the second pattern-disk B. Accordingly as the latter is turned the friction-roller h of the said lever H passes upon ahigher or lower point of the undulating edge of the said pattern-disk B. The upright arm of the bell-crank lever H is thereby caused to turn upon its pivot, and this motion is transmitted by the draw-rod c to the frame G, so that the latter moves in a horizontal direction either from the right to the left, or vice versa, it being displaced from the right to the left when the friction-roller h passes upon a deeper point of the edge of the pattern disk, and from the left to the right when the friction-roller 71 passes upon a higher point of the edge of the said pattern-disk.

After each motion of the frame a momentary stop of the same occurs, during which the formation of the stitch is effected, and the ratchet-wheel A is so constructed, together with the pattern-disks B and B, that in afull rotation of the same each time the distinct design, whether it be a point, star, leaf, or the like, is finished.

The design, according to the number of the needles, is repeated in a horizontal row upon the material. In order to embroider a new row of the same design,a forward feed of the material, as well as a lateral movement of the frame G, takes place.

If the points of the first row, (see Fig. 14,) for example, have been embroidered by the machine, the points of the second row are not to be immediately below these, but are to occupy positions intermediate of and at angles to the points of the first row, and for this purpose the frame must make alternately from row to row first a movement from the left to the right and then inversely from the right to the left; but in order to enable the forward feed of the materialas well as the motion of the frame, or to gain the necessary time for these, so that the tearing of the material shall not be caused through any advance of the needles, it is necessary that the speed of the machine should be reduced, which is effected by shifting at this moment the transmittingbelt from the pulley U to the pulley U on the driving-shaft by means of the fork X. The said fork is shifted automatically, and can be effected in many different ways. For example, the fork may constitute one end of a double-armed lever supported so as to be able to turn, while the other end of this lever engages with the curved groove of a cam arranged upon the shaft XV and caused to turn with the latter.

As soon as the speed of the machine, in consequence of the shifting of the belt from the pulley U to the pulley U, has been reduced,

a forward feed of the material takes place to an extent which corresponds to the distance between two adjacent rows of points, 1 and 2. (See Fig. 14.) At the same time a lateral movement of the frame G occurs. By these combined movements an oblique movement is imparted to the material.

The forward feed of the material (see Figs. 1, 3, and 11) is effected in the following manner: The material is stretched on the frame, as shown in Fig. 11. It is wound upon rollers D, and the said rollers are placed in the frame. The materialis then passed over lower guide-rollers, G, and from thence over the other guide-rollers,T and F to the receiving-roller E upon which the embroidered material is wound. The part of the material between the lower guide-rollers, G, and the upper set of guide-rollers, T and F forms the embroidery-surfaee proper and is put under equally strong tension, so that a fold cannot occur at this place. The two upper guiderollers, T and F are provided at one end, at H, (see Fig. 1,) with toothed wheels that engage with each other.

Upon the journal j of the intermediate roller, F, of the upper set of guide-rollers is arranged a ratchet-whee1,t, Figs. 1 and 3, and also a double-armed lever, s, capable of turning upon said journal and having two pawls which fall between the teeth of the said ratchet-wheel t. One end of the lever s is connected with a vertical draw-rod, X (see Figs. 1 and 3,) so that on drawing the latter down the said roller F is caused by means of the doublearmed lever s and by the pawls secured thereto to make a partial rotation.

This motion of the vertical draw-rod X is effected by the following device: Upon the end of the before-described shaft WV is fixed a cam, P, (see Figs. 1, 2, 12, and 13,) the edge of which is provided with a raised part, b. (See Figs. 12 and 13.) A friction-roller arranged at the end of one arm of a bell-crank lever, O,bears upon the edge of this cam. The said lever is adapted to turn upon a short shaft, K, firmly arranged on the frame of the machine. v The other arm of the said lever O is connected by a joint, 0, and draw-rod u with a lower bell-crank lever, 76, pivoted at f to a bracket attached to the frame of the machine. The lower arm of the said bell-crank lever 7.: is connected, by means of a horizontal drawrod,y, and joint 1" with a fork, m. The latter embraces an eccentric disk, Z, which can be moved laterally upon the shaft M. The said eccentric disk Zis, llOWGXGl, prevented from turning upon the said shaft M bya groove and key. The fork m and eccentric disk Z are kept in their normal positions by means of a spiral spring, 1;, which is represented in Figs. 1 and 12. At the end of the short shaft 7c is also pivoted a double-armed lever, 13), one end of which is provided with a roller while the other end of the same is in connection with the vertical draw-rod X by a ball-joint. If, now, during the rotation of the cam P the friction roller a on the bell-crank lever 0 passes upon the raised part b of the said cam, the said bell-crank lever O is caused to make a partial rotation upon its shaft is, which motion is transmitted by a draw-rod, u, to the lower bell-crank lever, is, and through the medium of the horizontal draw-rod y and fork m to the eccentric disk Z thereby causing the said disk Z to slide upon its shaft M in the direction shown by the arrow in Fig. 12. During the rotation of the said shaft M the eccentric disk Z, therefore, passes below the end of the double-armed lever 19, which is provided with a friction-roller, and lifts this lever. In consequence of this the other end of the said lever must be depressed, whereby the vertical draw-rod X connected therewith by the before-named ball-joint, is drawn down. By the drawing down of the said rod X the intermediate rollers, F and the roller T connected with these by gear-wheels, and also the upper roller, E as already stated, are set in partial rotation, whereby the forward feed of the material is effected from the bottom upward in the direction given by the arrow shown in Fig. 11. As the material is wound upon the upper rollers, E it unwinds from the lower rollers. I

As the upper rollers increase and the lower rollers diminish in circumference in proportion as the material is wound up upon the one or unwound from the other, friction-, brakes are employed operating upon the journals of the respective rollers, in order to always enable the winding up of an equal quantity of material. These friction-brakes may be of well-known construction and merely operate to cause a slip as the diameters of the take-up rollers increase. As soon as the roller a passes from the raised part b of the disk P all the parts, including the eccentric Z, are drawn back to their original position by the spring 12, and the vertical draw-rod X is also moved upward again by the traction of the spring, the pawls secured to the double-armed levers s sliding over the teeth of the ratchet wheel 25.

The motion of the frame horizontally,which occurs at the time of the forward feed of the material, is caused by the following device: On the shaft is the disk K, (see Figs. 1, 2, and 4 to 10,) and also a spur-pinion, e. The latter is in gear with a spur-wheel, d, supported on a pivot on the diskK, so that it can turn upon its journal on the said disk K, and is provided upon its rear side with a curved groove, h. (See Fig. 10.) The other side of the disk K is provided with the channels or grooves n 0. Moreover the disk K has a recess, L, which is of dovetail shape in section, and in which is supported the sliding piece M, of corresponding shape, so that it can be moved up and down. The said sliding piece M is on one side provided with a sliding pin, 19', which engages through a slot, q, extending completely through the material of the disk K, with the curved groove h of the toothed wheel d supported on the disk K. (See Figs. 6 and 7.) On the otherside the sliding piece h (see Figs. 4 and 5,) is provided with the channels or grooves s and t. During the rotation of the shaft W and the rotation of the spur-pinion e, which takes place simultaneously with it, the spur-wheel d is also caused to make a revolution, the latter making one revolution while the former makes two revolutions, as the spur-pinion e is to the spur-wheel d in the proportion of one to two. In the revolution of the said spur-wheel d the sliding piece M moves up and down by reason of the engagement of the sliding pin p with the curved groove h of the spur-wheel d. When the said sliding piece M occupies its uppermost position, as shown in Fig. at, a connection of the outer groove, a, arranged on the disk K, with the inner groove, 0, likewise provided on the disk K, is established through the lower groove, 25, on the sliding piece ,M In the lowermost position of the sliding piece M (see Fig. 5) a connection is established by the upper groove, .9, formed in the said sliding piece M between the inner groove, 0, arranged upon the disk K, and theouter groove, 11. In these grooves africtionroller, g, Fig. 1, slides, the said roller being placed upon the end of a bell-crank lever, I, arranged upon the lever-shaft P, so that it can turn thereon, the other end of the said lever being hinged to a short vertical drawrod, t'. The said draw-rod t'a-cts upon a toothed segment, a, supported to be able to turn in the irregularly-shaped bell-crank lever H. This segment a is in gear with a toothed pinion, b, likewise supported in the said lever H. (See Figs. 1 and 3.) The bearing-journals of the said pinion terminate in small cranks r, with which the horizontal draw-rod c, ending in a fork, is connected. On the short vertical draw-rod 6 being drawn downward the toothed segment a turns upon its pivot in the direction indicated by the arrow, and the horizontal draw-rod c, by reason of the engagement of the same with the crank of the pinion b, makes a motion in the horizontal direction from the left to the right, thereby causing the frame connected with the horizontal draw-rod c to make a similar movement. If, however, the short vertical draw-rod 2 moves upward, the toothed segment turns in the opposite direction, and by virtue of the said connection the horizontal draw-rod 0 makes with the frame a motion inverse to the direction of the previous one from the right to the left, by which motions the shifting of the design is effected.

The respective positions of the toothed segment a and of the pinion b with the horizontal draw-rod 0 have no effect upon the subsequent operation of theirregularly-shaped bell-crank lever H on the embroideryitself, inasmuch as the said horizontal draw-rod, with the frame, follows, in the manner already set forth, the motion of the said lever, no matter whether the frame is pushed by the abovedescribed device from the right to the left or from the left to the right. The motion of the short vertical draw-rod by which this movement of the frame is effected is caused by the bell-crank lever I in such a manner that the friction-roller g provided at one of its lever-arms passes during the rotation of the disk K, by virtue of the movement of the sliding piece M in the said disk K, one time from the outer groove, 01, into the inner groove, 0', and then from the inner groove, 0, again into the outer groove, n. (See Figs. 4 and 5.)

The frame G isguided in its forward and backward as well as lateral movements by means of rollers acting against the arms S, (see Figs. 1 and 15,) arranged above 011 the frame of the machine,whereas, as already observed, it bears below with its wheels 0 upon the arms A of the shaft D.

The motion of the needles, as well as the motion of the shuttle, takes place in the known manner from the shaft M, and the mechanism effecting the same does not require here to be described, especially as it does not form the subject of a claim.

It remains to be observed that the machine can be constructed with one, two, or more stories without thereby necessitating special changes in the mechanism concerned.

As already stated, separate ratchet-wheels and pattern-disks are necessary for each design, so that they must be changed every time the design is changed.

Having thus described our invention and the manner of employing the same, what We claim as our invention, and wish to have secured to us by Letters Patent of the United States of America, is

1. In an embroidering-machine, the combination, with a frame, of intermittently-rotating rollers upon which the material is wound, driving mechanism, a shaft driven therefrom, pattern-cams operated from said shaft to cause movements of the said frame in planes at right angles to each other, another cam on said shaft, mechanism operated by said cam to cause said intermittent rotation of the feedrollers, a second shaft, a cam on said second shaft, and levers operated from said secondnamed cam for causing the movement of said frame simultaneously with and ina direction at right angles to the direction of forward feed of the goods, substantially as specified.

2. Iuan embroidering-machine, the combination, with a frame, of intermittently-rotating rollers upon which the material is Wound, driving mechanism, a shaft driven therefrom, pattern-cams operated from said shaft for causing movements of the said frame in planes at right angles to each other, another cam upon said shaft, mechanism operated by the lastnamed cam to cause said intermittent rotation of the feed-rollers, a second shaft, a cam on said second-named shaft, a connectionbetween said second-named cam and the frame for moving said frame simultaneously with and ina direction at right angles to the direction of forward feed of the goods, and a speedregulator for automatically changing the speed of the machine during the forward feed of the goods, substantially as specified.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

ADOLPI-I SAURER. ERNST LEUTI-IOLD.

llitnesses:

Or'ro I'IAUSER, P. W. STEIMLIN.

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