US1214599A - Embroidering-machine. - Google Patents

Description

e. SIEBER.

EMBBOIDERING MACHINE. APPLICATION F ILED JAN. 19. I915.

1,214,599. Pz ltented Feb. 6,1917.

j 2 sugars-sneer 1. I 5

G. SIEBER.

' Patented Feb 6,1917.

KZSHEETS-SHEET 2'.

NT @Fhiifi GQTTVIALT SIET BER, OF PLAUEN, GERMANY, ASSIGNOR T0 VOGTLANDISCHE MASCHINEN- FABRIK, 0E PLAUEN,

EMBROIDERING-MACHIN E.

Specification of Letters Patent.

Application filed January 19, 1915. Serial No. 3,185.

i To all whom it may concern:

Machines, of which the following is a speci-- fication.

The present invention relates to pantograph embroidering machines and has for its object to provide a controlling mechanism whereby much time and labor in the manipulation of large embroidering machines will he saved. 4

Hitherto when the operator of an cur broidering machine had to change from or dinary emhroidering to say boring. he had to first stop the entire machine, then by turning a hand wheel put it into boring position and move it to and from order to draw off sufiicient thread from t-.--e shuttles and take 'ups so that the tambour frame may have the necessary freedom of movement. Such. manipulation, particularly with a modern embroidering'machine of about 15 yds. length,

puts considerable strain on the operator. By

my new controlling mechanism this evil is avoided. It is so constructed that the operator needs only to give an impulse to its movement and it will by itself in a positive manner set the needles at rest outside of the fabric, while the take-ups and shuttles con tinue to'move and pull off the length of thread required for the boring operation. Thus if the operator in order. as it often happens. to examine the work, he does not neethas before, to stop the entire machine, but merely has to give an impulse to the controlling mechanism which at once will automatically arrest the needles outside of the fabric and on receiving another impulse against the needles in motion. The operator can adjust the controlling mechanism so that the needles will be automatically stopped 11 after each stitch. to gain time for speciallyl: tainbour nuns-merits between the individual stitches. He also can so adjust the mmtrolling mechanism that every other stitch is omitted in order to allow of the formatioiz of long stitches. The new controlling mechanism. besides allowing of the needles being stopped in an absolutely positive manner; also has the'partic'i'i'lar advantage. that it can effect the stopping and starting of the needle motion at any stroke cated by the dotted line 77.

of the machine so that the operator is not bound to Wait for a certain stroke to manipulate the needles.

My invention will be more fully understood by reference to the accompanying 6o drawings, in which similar characters denotecorresponding parts and in which Figure 1 shows in a more or less diagrammatic view an embroidering machine equipped with my new mechanism and Figs. 2-, 3 and 4 illustrate the operation of the controlling mechanism.

Referring specifically to the drawings 1 denotes the main shaft of the embroidering machine which carries a am disk 2 serving for the operation of the rows of needles 3,

4. The needle actuating bar 5 carries at its lower end a fixed. roller 6 which in coopera tion with the cam disk 2 effects the withdrawal of the needles from the fabric indi- A second roller 8, which in coiiperation with the cam disk 2 moves the needles into the fabric, is borne on a pivot 8 slidably mounted in a slot 9 provided in the bar 'The pivot 8 of the roller 8 is carried by the free end of a link 10 which together with the link 11 pivoted to the bar 5 forms a toggle mechanism. When the toggle mechanism is collapsed as shown in Fig. 1 the roller 8 occupics a position at the upper end of the slot 9 and is inoperative. \Vhen the toggle mechanism 10, 11 is stretched. that is when its links are in a straight line. the bar 5 is lifted whereby the roller 8 is brought to 00- cupy the position at the lower end of the slot 9 and the roller 6 is brought into contact with the cam 2 so that the two rollers (5 and 8 embrace the disk 2 and impart the stitching movement to the needles. Fixed on the shaft 1 of the cam disk 2 is a. pinion 15 which through an. intermediate gear 16 drives a. set of intermeshing gears 17., 18 and 19 twice as large as the pinion 15. Con nected to the junction of the two links 10 and 11 of the toggle mechanism is an arm 12- which is pivoted to a lever 13 fulcrumed at 13 and that by a link 14 is connected to an arm of a fourarmed lever 20. A secon d arm 2O of the lever extends toward one 1 of the facesof the gear 17 provided with concentric grooves 17', 1.7 and is adapted at its end positions to engage one of said grooves and to thus lock the controlling mechanisms. A. third arm 20 engages a. 11%

. .to the link 26*- by a pin :26 which at times is vertical slide 23 and a fourth arm 20 engages a loop 37" formed at one endof a bar 37. The slide 23 has pivoted to its lower directions and the third arm 33 of which througha link 34 is connected to an arm of a bell crank lever 21 fulcrumed on a fixed pivot 21. Theother .arm of that bell crank lever 21 constantly engages a cam groove 18 provided on one of the faces of the gear 18.

Through the medium of the bell crank 21 and cam 18 the lever 33, 33, 333- will receive a rocking movement, the direction of which will change witheach revolution of the shaft 1.

In the present embodiment of my invention the arms 24, 25 are each formed with .two outer notches 24, 25 and one inner notch 24 25 respectively. Either onev of the diametrically opposed arms 33, 33 of the three-armedlever is adapted at times to engage the inner notch of the adjacent member 24 or 25 and while rocking on its pivot 33 operate the slide 23 whereby through the medium of the four-armed lever 20, link 14, lever 13 and rod 12, the toggle mechanism 10 and 11 is operated to bring about the adjustment of the needle actuating rollers 6 and 8, as heretofore stated.

Cooperating with the outer'notches of the arms 24, 25 are looking members 26, 27 which are fulcrumed on fixed pivots 26%27 respectively, and are connected together by a link 26". The member 27 is in form of a multiple-armed lever of which one arm with its free end 27 is adapted at times to engage either one of the outer notches-25 of thearm 25. Another arm 27 carries a pin 27 which at times is adapted to engage the lower end of the arm 25. A. third arm 27 'isadapted at times to cooperate with a part 31 tolock the arm 25 in position. Av fourth arm 27 is adapted at times to be actedupon by a. rocking arm 22. The member 26 is in form ofa two-armed lever, of which one arm WlthLdliS free end 26 is adapted at times to engage' either one of the outer notches 24 .Ofithe arm '24 and'the otherarm isconnected 'dapted- .to act againstthe lower end of the Large 24.

- The rocking lever 22 isainform of a bell crank ley'er fulcrumed 'on l'a' fixed pivot 22. Q l'eof its arms constantly-engages a cam groovel-il formed onfonejofthefaees of the,

ea-r while'the other arm of said lever 'xtends downwardly I into the path of the' le'yer31. The latter isyifiulcrumed on" a fixed pivot 31 and is actuated by spr 3 .cannot all'ect the latter.

livoted at 30" to the upper free end of said lever 31 is a member-in form of a plate 30 or the like, which extends on both sides of its pivot and is actuated by a spring 30 .28 denotes an electro-magnet which is energized from a suitable source on pressing a button that may be conveniently arranged on the pantograph (the-electric source, but ton and pantograph not being shown). The armature 29 of the electro-magnet is in form of a three-armed lever fulcrumed on a fixed pivot 29. One arm 29 of said lever extends toward the member 30 to constantly rest thereon. The second arm 29 extends toward the lower end 37 of the bar 37. The third arm 29 is adapted to act as the armature proper. The bar 37 which is freely sus pended from the arm 20 of the lever 20 .is formed intermediately between its ends with a shoulder 37". The bar 37 is capable of adopting three different positions on .the manipulation of a hand lever 38. Thus when the latter is in the position a as shown, the bar 37 is ineffective, e. the nose 37 thereof is removed from the armature and I \Vhen the hand lever 38 is turned intothe position 7), it will swing the bar against the tension of its spring 37 toward the armature and cause the nose 37 to engage the arm 29 from below (see Fig. 2). When the bar 37 is pulled upwardly through the medium of the slide 23 and the four-armed lever connected with it, it will swing the armature around its pivot 29 in the same manner and with the same effect as the armature is swung when attracted by the electro-magnet. When the lever 38 is brought into position 0 it will engage against the shoulder 37 and lift the bar 37 into the position shown in Fig. 4, in which it will be constantly maintained irrespective of the movements of the slide 23 and the parts connected with it. In that position the bar 37 will hold the armature continuously tilted as when attracted by the electromagnet.

hold themember 30 projected into the path of the rocking lever 22.

' Arranged in the vertlcal path of the arms 24:, 25 are catches or stops 35 and 36 respec- 33", 33 from subsequently becoming caught.

For it is clear, if both arms 24-, 25 were to be engaged simultaneously by the three armed In this tilted positionthe' armature or its arm 29 will continuously lever a breakage of the. parts wouldtake place, I

' The function of the different parts of my new controlling mecl ianism will become clear from the following description of the mode 'of' operation: Ordinarily the hand lever'occupiesthe position a. If the operator wishes for some reason to interrupt the stitching operation, he closes the circuit of the electro-magnet 28 by pressing a button (not shown). The armature 29 is thereupon attractedswinging on its pivot 29, 1n an anti-clockwise direction. In consequence thereof its arm 29 depresses one end of the member 30 thereby lifting the opposite end of the latter into the path of the constantly rocking lever 22. When thelatter swings from left to right, it encounters the lifted end of the member 30 and presses it to the right, thereby swinging the lever 31 in the same direction against the tension of the spring 31 The shoulder 31 of the lever 31 in moving away from underneath the arm 27 of the member 27 releases the latter.

'The arms 24, 25 which hitherto have been locked by the members 26, 27 of which the pins 26, 27 have been in engagement with the upper outer notches 2e? and 25 and the pins 26, 27 withthe inner edges of the arms 24, 25 respectively, are now, on the release of the member 27 from-tho part ill" of lever 31, unlocked and can follow the tension of their spring 32 swinging inwardly. According to the position (it the rocking, lever 33, 33" at the time ot' the unlocking of the arms 2i, 25, that one of the latter whose inner notch happens to lie. in line with either one of the arms 33 33 will ongage said arm. As the lever continues to rock it will lift the slide 23 which through the medium of the lever 20, bar l i, lever 13 and link 12 collapses the toggle mechanism 10 and 11 and thus arrests the needles while the other parts of the machine continue their operation. In this arrested position the needles are shown in Fig. 1. It will be understood that after the electroanagnet has been'deenergized, the armature 29' and member 30'by reason of the spring '30" and the lever 31 byreason of the spring 31" will swing back into their normalpo-siti on shown in Fig. 1. Furthermore, the lever during its return stroke from rigl'it to left in strikin a ainst the arm, 27 of the member When the operator wishes to proceed with the stitching operation he again presses the electric button and the above described oporation of the controlling mechanism is repeated, except that the slide. 23;.now is moved in a downward direction which through the medium of bar ll, lever 13-, link 12 straightens out the toggle linkslO, 11 whereby. the needle rollers 6 and 8 are adjusted into operative position. 3

engagement with the loop 37 toggle mechanism.

cflect would be obtained if the operator If the operator desires to discontinue the operation of the needles for any length of time after every stitch, in: order to gain time for the displacementof the tambourframe, he-pla'ces the handlever 38 into position b, Fig. 3. Hereby the nose 37 b of lever 37 is brought to lie underneath the arm 29 of the armature. On pressing the electric button after'each displacement of the tambour frame, the controlling mechanism will perform the operation above described moving the slide downwardly and thereby straightening out the toggle links 10,11. Simultaneously. the arm 20 will swing upwardly and lift the bar '37 by reason of its ,This will cause the nose 37 to swing the armature 29 which in the meantime has returned into initial position toward the electro-niagnet, in consequence of which the member 30 will once more be brought into the path of arm 22, so that after completion of a stitch the slide 23 will be returned into its lifted position and collapse the toggle mechanism.

bringing the needles to rest. Thus the needles will be autmnatirally arrested after each stitch and may be maintained in their rest posit-irm-ior any length of time until on pressing the button the controlling mechanism receives a new impulse.

It the operator wishes to interrupt stitching operation after every second stroke, he turns the hand lever 88 into position c. Thereby the bar 37 is caused to engage with its nose 37 underneath the arm 29 of the armature and at the same time is raised swinging the armature toward and into contact with the electro-magnet 28 as shown in Fig. 3. In this position the armature is continuously held as long as the hand lever 38 IS in 0 position. The member 30 is held thereby continuously in. the path of the swinging lever 22 and the controlling mechanism alternately lifts and lowers the slide 23 and straightens and collapses the Of course, the same were to keep the hand lever always in either of the positions a and b, and continuously press on the button. But this, of course, would be objectionable as it would not only tire his hand but also hinder him from doing something else.

The above specified. structure is only one embodiment of my controlling mechanism, and it is understoodthat the same may be modified in various ways without deviating from the principle of any invention. I, therefore, do not wish to restrict myself to the details described and shown.

What I claim and desire to secure by Letters Patent is:

I. In an embroidering machine, the combination with embroidering implement-s, of

a controlling mechanism including a constantly moving member, means which during any stro \e of the machine are capable of engaging and have the tendency to engage with said member and means for normally preventing such engagement and which on receiving an impulse will release said first named means and allow of their I engagement with said member, whereby they will so affect the said implements as to either render them ineffective or effec tive without influencing the operation of other parts of the machine.

2. In an embroidering machine, the combination with embroidering implements and said member and means for normally preventing such engagement and which 011 receiving-an impulse will release the said inean's and allow of their engagement with said member whereby they will so adjust said actuating means as to render said 1mplements ineffective or effective without in-- fluencing the operation of other parts of the machine.

3, In an embroidering machine, the combination with embroidering implements and actuating means therefor including a cam and rollers, of a controlling mechanism including a constantly rocking member, members operatively connected to said rollers andwhich during any stroke of the machine are capable of engaging and have the tendencyto engage w th said rocking member and means for normally preventmg such engagement and which on receiving an imou se'wi re ease saic 'mem ers. a ow 1 1 ll 1 l b and ll 'ot their engagen'lent with the said rocking member whereby they will so adjust the rollers relative to the said cam, as to render the, said. implements ineffective or effective without influencing the operation of other parts-ofthe machine. 7

4:. In a pantograph emln'oid'ering machine, the combination with the stitching implements and actuating -means therefor, lncludmg a cam and rollers cooperating therewith, ofa toggle mechanism operatively connected to said rollers and a controlling-mechanism operatively connected to sald toggle mechanism and which on receiving anvimpulse will automatically oper- Yate the saidtoggle mechanism so as to adjust said rollers into inoperative or operative position relative to their cam and to -1ng implements, without affecting the opercorrespondingly'arrest or start the stitchationof other parts of the machine.

5. In a pantograph embroidermg ma,-

, chine, the combination with embroidering vimplements, of a controlling mechanism comprising a constantly moving member, a double armed slide operatlvely connected to said implements and which on receiving an. impulse is capable of engaging wlth during any stroke of the machine and to render said implements ineffective or eflt'ective without a fleeting the operation of other ,4

parts of the machine, and adjustable means wlneh under the mfluence of the same impulse wlll cause the restorationof the 1mplements to their original positions at thenext stroke of the machine.

7. In a pantograph embroidering machine, the combination with embroidering implements, of a controlling mechanism comprising a constantly moving member,

and a slide operatively connected to said implements and wlnch on receiving an 1mpulse is capable of rendering the-latter ineffective or effective without affecting the operation of other parts of the machine, and means capable of a series of adjustments and which under the influence of the same impulse according to its adjustment will cause either the restoration of the implements to their original positions at the next stroke of the machine or the continuous alternation of their positions at the suceeedingv strokes.

8. In a pantograph embroidering machine,

the combination with embroide ing implements, of a controllmg mechamsm comprismg a constantly moving member and a device operatively connected to said imple-' ments and which on receiving an impulse is capable of rendering the latter ineffective or effective without affecting the operation of other parts of the machine, and manually controlled means for starting said mechanism, said mechanism including a member which can be adjusted to influencesaid means so as to automatically return said implements from ineffective to effective position at the next stroke ofvthe machine.

9. In a pantograph embroidering machine, the combination with embroidering implements, of a controlling mechanism comprising a constantly moving member and a-device operatively connected to said implements and which on receiving an impulse is capable of rendering the latter ineffective or effective without affecting the operation of other parts of the machine, and manually controlled means for starting said mechanism, said meclnmism. including a member which can be acigusted to influence said means either ,to automatlca'lly return said implements from inefi'ective to efi'ective position at the next stroke or to continuously maintain said mechanism in motion and "thereby alternately renderthe implements ineffective and effective witheac'hstroke of the machine.

I V 10. In an embroidering machine, the comb'inationwith embroidermgimplements, of a controlling mechanism including a constantly driven rocking lever, movable members operatively connected to 'said impletheir, engagement with said rocking lever and constantly drivenmeans for automatically 'retunning said last namedmeansinto locking position. f 11. In anembroidering machine, the combination with embroideri-ng implements, of a controlling mechanism mcludinga constantly driven rocking lever,,'movable membcrs operatively'connected, to said implements and which during any stroke of said rocking levenare capable of'engagmg and have the tendency to engage with the latter, means for normally preventing such en- 'gagement,.locking means which on receiving arr-impulse will'befcaused to release the latter means and a common constantly driven means for. successively moving both said last named means.

thereof andconstantly tending. to engage strols;e thereof and having the tendency 'engage" therewith, electrically controlled 12,- In' an embroidering machine, the combination with embroidering implements, of an' implement controlling mechanism, comprising a constantly driven rocking member, mo'table members capable ofengaging with said rocking member during any stroke therewith, and -an electrically controllml means for normally preventing such engagement and whiclron receiving an impulse .will release "the said'members and allow of their engagement with said rocking member.

13.- In an e'mbroidering machine, the combination with embroidering implements, of an implei'nent controlling mechanism, comprising a constantly driven rocking member, movable members capable of engage- 'ment' with said rocking member at any to meanscapable of engaging with said moving-"members at'the end positions thereof and adapted on receipt of an impulse to release the said members and allow oftheir engagement with said rocking member and a] constantly driven member to reset the said.

latter means into locking position at the end of a stroke: of said rocking member.

M.- In a pantogra'ph embroideringma.- chine, the combination'with embroidering implements, of a toggle mechanism eperatively connected to said implements and capable of renderingthe ll'atterinefiective' or effective without affecting themperation of.

' other parts of the machine, a controlling mechanism connected to said toggle mechanism and comprising a; constantly moving member and adevlce, which on receiving an impulseis capable of engaging said moving member. during any stroke of the machine, and manuallylcontrolled means for starting said controlling mechanism.v

15. In a pantograph cmbroidering Ina-- {illll1( ,tl1 combination with embroider-lug implements, of a controlling mechanism to render said implements ineffective or eifective without afiecting the operation of other parts of the machine, said mechanism 'in-' cluding a constantly rocking lever, a d uble armedslide which on receiiiingan impulse is capable of engaging with said lever diiring any stroke of the machine, means for locking said, slide. in disengaged position, and means for unlocking said-slide andtsimultaneously engaging it with said lever."

16. In a pantograph embroidering machine, the combination with embroidering implements, of a controlling mechanismto render said implements ineffective ofefi'ective without affecting the operation of other parts of the machine, said mechanism-including a constantly rocking lever, a double armed slide which on receiving an impulse is capable of engaging with said lever'during any stroke of the machine, means for locking said slide in disengaged position, automatic means for unlocking said'slideandsimultaneously engaging it withv said lever and manually controlled means for starting said last named means.

17. In .a pantograph embroldering vmachine, the combination-with stitching implements, of a controlling mechanism to automatically arrest and start said implements without affecting the operation of other parts of the machine, and including a manually adjustable member, which on adjustment in one position will at the next stroke of the machine automatically restart said implements after they have been arrested and'in another position will cause the implements to continuously and alternately implements, of a controlling mechanism for rendering said implements effective or ineffective without affecting the operation of other parts 'ofthe machine, said. mechanism comprising a constantly rocking lever, a slide operatively connected to. said implements and having two members with which said lever is adapted to engage, means for normally holding said members out of the path of said lever and means which on receiving an impulse will release said members and allow of their moving into the path of said lever, said lever being capable of engaging one member at a, time during any stroke of the machine.

19. In a pantograph embroidering machine, the combination with embroidering implements, of a controlling mechanism for rendering said implements effective or ineffective without affecting the operation of other parts of the machine said mechanism including a constantly rocking double-armed lever, a slide operatively connected to said implements and having two movable notched members with which said lever is adapted to engage, means for normally holding said members out of the path of said lever, means which on receiving an impulse will release said members and means for moving said members into the path of said lever, said lever being capable of engaging one memher at a time during any stroke of, the m1- chine.

20. In. a pantograph embroidering machine, the combination with embroidering implements, of a controlling mechanism for rendering said implements effective or ineffective without affecting the operation of other parts of the machine, said mechanism comprising a constantly. rocking lever, a slide operatively connected to said implements and having two movable members with which said lever can engage, means for normally holding said members out of the path of said lever means which on receiving an impulse will release said members, means for moving said members into the path of said lever and means for preventing the other member from engaging with said lever while one is in engagement therewith.

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

GOTTWALT SIEBER.

\Vitnesses: V

Josnr GroNz, llonnn'r H. N11 11:.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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