US1013261A - Jacquard mechanism for embroidering-machines. - Google Patents

Description

A RZAHN. JACQUARD MBCHANISM FOR EMBROIDBRING MACHINES.

' APPLIOATION FILED MAR. 18,1910.

1.013.261. l Patented 32.1.2, 1912.

2 SHEETS-SHEET 14 5mi@ who@ R. ZAHN i JACQUARD MBCHANISM POR EMBROIDERING MACHINES.

APPLIOATIO FILED MARJB, 1910.

- Patented Jan.2,1912.

` 2 SHEETS-SHEET Z.`l

Il il FMI* Il H

narran seiiarrasrairaivfr ynarnia RGBEBT ZAHN, OF ELUEN, 'GERMANY'. JACQUARD MECHANISM FOR EMBRODERINGMACHINES.

iii. Specification of, Leiters Patent. latented Jan. f2, 1912. Application filed March 18, 1910. Serial No. 550,123.

To all whom t may concern: soine parts are broken away, illustrating the lBe it known that i, Bonner ZAHN, a sublmachine in operation. 55 ject of the King of bavaria, and resident 1, 2, 3, 4, 5 are the lifting bars 0f the of Plauen, Germany, have invented new and jacquard mechanism for moving the emuseful improvements in Jacquard Mecha; broidery frame of an embroidering machine nisnis for Embroidering-Machines, of which Whichoperate the soupling bolts b', b2 the following is a full, clear, and exact speci- (Fig. 1), so that when either of the bolts 60 'ficatioii is raised by means of a respectivelifting The present invention relates to jacquard p angle bar, the saidboltv enters the corre mechanisms for einbroideringmachines,havsponding hole c of the sliding piece d and ing a plurality of liftingbars for controlling the coupling of the graduated lever a with the movements of the embroidery frame in. the reciprocating slide f is thereby eected 65 such a way that the displacement of one at the hole corresponding .to the length of or other of the lifting bars causes a variable the lever arm chosen. t l degree of motion to be imparted to the em- The connection of the lslide f With the broidery fra-me. A jacquard mechanism of embroidery frame is fully described inv my this kind is described for example in my application 542,305, filed February 5, 1910, 70

-U. S. application for Letters Patent, Serial and the mechanism for' transmitting the mo- No. 542,305, filed February 5, 1910. In tion of the graduated lever a to the rectijacquard mechanisms of this kind, care must linearly guided slide f is described in my be taken in order to avoid derangement or United States Patent 961,830. i

damage tothe mechanism, that not more The liftingbars are vertically adjustable 75 than one lifting bar is in operation at any and are lifted into the'working position one time. 1 when a slide 6 on thev lifting bars is in the The subjectof the invention is a protecrange of movement of a lifting bar 7 cartive device for jacquard mechanisms of this ried by a lever as shown in Figs. 1 and 4.

- kind, Which is, so arranged that it prevents The jacquard card J operates pins p which 80 the simultaneous operation of inerethan one in any suitable manner are connected to lifting bar. For this purpose the lifting slides 6. In the example shown, a double Ybars 'are combined on the one hand with a armed lever 79 is fulcruined to a stationary returning mechanism through the medium piece p2 one arm of which is pivotally conof controlling means, and on the'otlier hand nected to the pin p and the other arm of 85 with a jacquard mechanism stop motion bv Which by a connecting rod p3 is connected means of coupling locks, so that should more to the 'slide 6. p he operation of the pins p than one lifting bar be actuated in error by the jacquard card J takes place in Well the stop motion is brought into action by known manner, as for instance, in the manmeans of at least one of the coupling locks ner shown in. Fig. 1. Here the roller 1' over 90 to stopV the jacquard mechanism, While on Which'the jacquard card is guided is carried the other hand said controlling means cause by a reciprocatory frame r which has a memthe operation of the returning mechanism ber r2 coinciding with that arm of the double so as to immediately bring back the lifting armed lever p to Which the pin p is conbars, which have been erroneously actuated, j nected. The reciprocating movement of the 95 into their position of rest. j j frame r is effected from theffcam groove 9 The 'accompanying drawing shows one in any suitable or Well known n'ianner. Non' method of carrying out the invention. mally all slides occupy the position shown in Figure 1 is aside view, partly'in section, dotted outline in Fig. 1. *i When the card and Fig. 2 a front view, partly in section, cylinder i" is moved to ,the left by means of 100 o f the protect-ive device sho-ivn in the posithe frame r', a slide G, the corresponding tion of rest of the lifting bars. Fig. 3 i's vpin p of Which'has its free end located oppo- -a similar view to Fig. 2,' but illustrating the site a perforated part of the card J Ivvill casein which tivo lifting bars are together remain stationary, z'. e., in the initial orl- .A

in the .Working posit-'ion and Fig. '4 is a side `Working position. shown 1n dotted outline 105 .view similar to that 'of Figl and of Which in Fig. 1,' While those slides,y 'the .pins of l' to the right, e. 4out of the path of the liftcontrolled by a on the shaft v also bent lever 19 these parts (Fig. 4C).

he arrangement described works as fol-k which consist of ing bar. 7. j

The lifting bars can only'be brought into the raised position after 'a movable member 8. locking the lifting bars has been disengaged therefrom the lifting bars being progaging the locking vmember 8 lifting bar 7 and the locking rooved cam disk 9 mounted Figs. l and It).

14 are four coupling locks movable anchors lying he- 30 of the lifting bars 1, 2, which are` ivotally connected (Fig. 4) The i 11,12, 13, and

tween projections 3, 4,- 5, and

- to a vertically movable slide 15 (Figs. 1, 2 and 3). rlhis latter is locked in its lowest position, as are also the lifting bars, by means of the locking member 8. On the other hand -in the upper position of the slide l5, no notch on the s ifle lies oppositethe locking member 8 so that the locking member cannot enter its locking position; but this is not the case with the lifting bars which may locked in the upper position. The slide l5 controls an electric -switch 16 for stopping the electromotor driving the jacquard mechanism. l

The locking member 8 is movable about the pivot 17 and is controlled by the cam disk 9 by means of a bent lever 19-pivoted at 18 to the said locking member 8. The is held against a stop 2l of the locking member 8, by the tension vof a spring 20. lThislever 19 is connected by means of a rod 22 to a controlling lever 23, which is designed to bring at proper time a controlling rod 24.- into the range of an arm 25 of the lever carrying the lifting bar 7 (Fig. 4). The controlling rod'24 is pivotally connected to a lever 26 which is adapted to restore the lifting bars tion of rest, and which carries a return bar 27 which lies over the liftfin bars 'and the slide 15 and which controls the returning of lows: If one of the slides 6 of the lifting barsbe thrust to the left, as

shown in Fig.

l by dotted lines, take for instance that of the lifting bar 2then the bar 7 will engage it as it rises, aiidraise it ltogether with the lifting bar 2, which ispossible as'lrthe locking member 8 hasbeen disengaged at the' same time. The couplinglocks 1l, 12, 13 and 14 which l-ie between the projections 30 of the lifting bars l, 2, 3, 4, 5, may' hereby so position themselves that the lifting bar 2 withit's projection 30 can be raised betlween the coupling locks 1l and 12 (Figi 2 Should, however, by error two lifting bars lying next to one another, take for insta-nce 'rily lying next to vided with notc es forthe purpose of en member 8 are of the rotation of into their posithe lifting bars 2 and 3,.be raised at the same time, as shown in Fig. 3, then the projectioiis 30 of the lifting bars 2 and 3 en gage the coupling lock 12 on both' sides and thereby lift the slide 151 The saine is' obtained when .two lifting bars not .necessite one another are lifted at' then the coupling locks the same time, as

these two bars, so position lying between themselves that as a single larger coupling lbck. By raising the slide 15, the switch lever 16 is put over and the drive of the jacquard mechanism is stopped. Owing to the momentum of the parts of the machine, the jacquard mechanism will, however, continue te run on. ln the raised position of the slide 15 'the inember #8, as stated above, cannot take up its locking position.' During the continuation 19 is now turned about 18 in such a mannerk that it pushes the rod 22 tothe left. The controlling lever 23 thereby moves the rod 211v to the right and as the lifting'bar 7 is raised at this moment, that is to say, asthe arm 25 has fallen, then the control rod 2i may be over the yarm 25 so that the latter pushes the control rod 24 upward, when it again rises, and'thereby swings the returning lever 26 in such a manner that the bar 27 is lowered and thrusts both'the lifting bars 2 and 3 as well as the slide l5 downy ward. These lifting bars are thereby brought back into their Aposition of rest and the lockingl member 8 and the parts con trolled by it, take up their initial position and the slide 15 allows the drive of the inachine to be again setin action by means of the lever 16.

What I claim is: 1. In jacquard mechanisms for embroidering machines, the combination with jacquard lifting bars of means for lifting said jacquard bars, an automatic device for positively returning said bars to their initial position, av stop motion device for'stopping the jacquard mechanism, coupling locks between the jacquard bars connected to said stop motion device to cause stopping of the jacquard mechanism when more than one jacquard bar should have been'lifted, and controlling Ameans for said returning device, dependent on the operation of said coupling locks and adapted to set inv action the jacquard bar returning device when said l ving machinesfthe combinationwith jacquard they actin the same manner l the cam disk 9 'the lever lifting bars of automatic means for lifting said jacquard bars, an automat-ic device' for positively returning sa'id bars to their initial position,

controllano' said stop motion derice, locks connected. to said inovable member and arastop motion device for stopping i' the jacquard mechanism, a movable .member yintermittently y actuating this A.ranged between the jacquard lifting bars to form movable connectorsv between the latter and said movable member, and controlling means for said returning device, dependent on-said movable member so as to be operated when the latter is in position for stop motion. j

3. In jacquard mechanisms forfembroidering machines, the combination with jacquard lifti'ngbars of an operating member for lifting said jacquard bars, driving means for operating member, *ai movable operating member for positively returning said jacquard bars to their initial position, a stop motion device for stopping the j acquard mechanism, a movable slide controlling said-stop mot-ion device',jlocks,pivtally connected tothe movable slide and arranged between parts of ther jacquard lifting bars to form movablel connectors between the latter and the' movableslide, controlling means for the said jacquard returning member, .controlled by said movable slide and 'capable of forming connection between said returning vmember and said driving means.

4. Injacquard mechanisms for embroider#V ing machines, the combination with jacquard lifting bars of an operating member Ifor -lifting said jacquard bars, driving means for intermittently.actuating this operatingV member, a movable operatlng member for positively returning said jacquard bars to their initial position, a sto motion device for stopping the, jaequar' mechanism, a movable slide controlling said stop motion device, anchor like locks pivotally connected to the movable slide alud arranged between lprojections of the jacquard lifting bars to forni movableconnectors between the vlatter and the movable slide, controlling means for the said jacquard returninglmember, conti'olled, by said movable slide and capable of forming connection? between said returning member and said ldriving means. y

In witness whereof I have hereunto signed my name this 21st dayof February 1910, in the presence of two subscribingwitnesses."v ROBERT ZAHN. Witnesses:

ROBERT H; Ninn, RICHARD B. WAsHiNGfroN..

Images