US1034106A - Jacquard mechanism. - Google Patents

Description

J. A. GROEBLI.

JACQUABD MBGHANISM.

APPLmrnox rrLnn xov.17. 19104 1,034,1 06. Patented July 3o, 1912.

UNlTED STATES OFFICE.

JEPH A. 630ml, 0F NEWEDBK, '1N'. Y., ASSIGNOR BY ,MESNE ASSIGNMENTS, TO

.LLPHQNBE HuKUmH'EEDTfQF .NEW YDBK, IN. Y.

JACQUABD .IECHANISI.

ipocirlmof. Letters Pmi.

Paten-'ted J uLy 39, 1912.

Originxllppholtionllddllsmh 9,11910,lea1 Iomi. fDtvided-and this application tiled November 17, mio. mi mi. accres.

To all 'whom' it may-concern: 4

Be it known that' I, Josmn A. jGnornam, a citizen of the United States,and;a1-esident of the city, county, and Statie of' New York, have invented certain new and uaeful {ImprovementsA in lacquard `Mechanism, o which the ,following 1s a specification.

This case is a division of my application led on the 9th day of March, 1910 Land seriallynumbered 548,240.

The present invention rlates'to improvements 1n jacquard mechanism, and in the present case 'I have illustrated only such parts of acomplete jacquard mechanism as is necessaryfto show the 'application of my invention, as a complete jacquard would necessitate .a very extensive showing and my present invention can 'be readily understood from the present showing and from cross reference to certain UnitedStates atents issued to me or to my assignee. urthermore my invention is susceptible'of use in different forms of jacquards.

The present. invention. is intended more particularly for use iu'jacquards such as are used to operate embroidering machines, wherein a large ltambour .frame -cairies` a fabric on which a multiplicity of needles operate to produce ci buoidery and which tambour frame the jacquard automatically positions for euch stitch. Certain Ui S patents have becn issued-to me or to my as signees, for jacquards ioi' suchpurpose, the patents being dated Augustfl, 1883 and November G, 1894, und numbered l283,707 and 528,632, respectively, to which reference Will be made herein. My present invention may be advantageously embodied in the structures of either of said patents as well as in other jucquards and a reference to such atcnts will teach the present invention an its uses sufficiently to enable those skilled in the art to employ the present invention in other forms o'fjac uards.,

J acquards or operating embroidering machines4 are 'required to positionl thev tambour frame as above stated and'to be effective theymust be capable of producing a t number o'f 'positions of the tambour rame -two movements. Ato a certain extent, met in la former conwithin certain limits, thegreater the number of such positions which the jacquard is capable df controllin the greaterxthe etliciency ofthejacqua-r and the more perfect the oduct of vthe embroidering machine will be. The possibilities of the embroidering machine :ire increased as the number of positions :which 'the jacquard can jproduce in the tambour fframe are increased. The movement ofthe tambour 'frame during any given stitch fis comparatively smal1,-when lit is .considered `that Vsuch tanibour 4frame is from Q0 to 30 Jfeet long ,andthe machine proportionately large; and as the jacquard is automatically controlled by means o'f a jacquard card or *paper roll, Athe movements vin'the jacquard partswvhen initiated'bythe pattern rol-1 are considerably greater than 'the ultimate movement produced on the ,units are combined into a single inalmovement by Amechanism `which ermits o'f 'a greater number of positions o? thetambour frane with few parts inthe jacquard, by combining two movements of different units in various combinations. 4The present in vention relates to that part ofthe jacquard by which 'the variable reciprocating -niovement is transformed into a variable rotary movement andthe present invention may be -employed lwhether the jacquard is one in which the extent of movement is determined by a single primary operation, or one in which two or more movements of different units are combined to-produce a-movetnent varying according to the number of combinations which it is possible to obtainwith the These broad'objects are,

struetiom'that of my said secondipatent, but

-the present invention 'is Van advance over such device and others because I am enabled to convert a reciprocating movement of any extent, within the limits lof the machine, into a corresponding rotary movement. In other words there is no limitation, as far as changing the character of the movement is concerned upon the number of diierent positions which can be obtained within the limits of the jacquard. Furthermore the change from a reciprocating into a rotary movement is accomplished by a positive and certain device, which will occasion no defects in the product of the embroidering inachine and which will not throw greater stress upon the jacquard mechanism as a whole.

It is necessary in changing a reciprocating into a rotary movement to do so with a device which will return after each operation to its first or normal position before u repositioning; and the direction of movement must be susceptible of change at each operation, whereby the tambour frame will be moved, say first to the right and then to the left; and it must also be capable .of moving the tambour frame successively a number of times in a given direction to increase the amplitude of movement of the tambour frame or for other purposes. In my said second patent the reciprocating movement is converted into a rotary movement by means of rack frames which actuate gears, the racks being oppositely disposed so as to be enga ed sinvly on either side of the gear, where y the direction of the rotaryl movement may be changed and though suc device is positive and will permit of a variation in the extent of movement it has its limitations, because the teeth of the gear malte it necessary. for the racks to mesh with such teeth and the'variations in the movement are thus limited. Todo away with' the teeth on the racks and gear would necessitate -a very great pressure between the parts to produce enough friction to make the movement positive and such construction would not meet the requirements. In all former devices there has been a relative movement between the engaging and the engaged parte. That is, in my said second patent tiere is relative movement between thc racks and the gear, while if the gear teeth were removed and smooth bars used instead of the racks, there would still be relative movement betweenthe element engaging and the element engaged in the transforming mechanism. I have therefore provided a converting device wherein I am able to provide s uicient gripping surface to make the o ration positive and certain and wherein t e elements gripping and the element gripped have no relative. movement during t e transforming o ration.

I prefer to employ rac s as before'and segments meshing therewith at all times, the segments forming part of a pair of arms or levers. Upon these levers I provide clutching elements either of which may be thrown into engagement with the element of the revolving mechanism, which, in the present showing is a drum or pulley mounted ona shaft. As the levers carry the clutching elements, the latter move with the element clutched so that there is no relative movement between the element clutching and the element clutched and the racks and segments can remain. in mesh at all times. Since the clutching element can be engaged with the clutched element at any point any adjustment is possible within the extreme limit-ations of the machine.

In the drawing forming a part of this application, the figure is a plan view of the preferred form of my present invention.

I will first describe the mechanism herein shomi and I will then show by reference to my other patents what application my present invention has in a complete jacquard.

In the presentshowing I have provided a supporting frame 1, which is suitably mounted in the jacquard structure and which supports various operating elements to which reference will be made.

The shaft 2, which carries a cam 3, is the main or voperati 0' shaft of the jacquard and from which liiie operating force of the jacquard is derived, as in my said revious jacquard structures. In the 'form o m invention herein -shown the revolution o the cam 3 operates continuously tol produce a rocking motion in the 1ever4, which fulcrums at 5, through the connection of the bowl 6 on an ear of this lever, with the groove 10 of the cam 3. The `link 7. which 1s fulcrumed by means. of a. pin 8 in the slot 9, of the lever 4, would, so far as the cam is concerned, be operated the same extent at each revolution ofthe cam, but in certain known forms of jacquards the pin 8 is movedto various positions along the lever 4, whereby the extent of movement imparted to the link 7 is adjusted to secure very line diflcrences of movement. This adjustment of the fulcrum is caused by mechanism controlled automatically from the jacquard card or roll and a description of the mechanism therefor would lead to a very extensive description, and the mechanism therefor is known 1n the art. The link 7, responding to the action of the lever 4 imparts a reciprocating movement to an element which 'operates either directly or indirectly in the transformation of the movement into a rotary movement and the element here shown operated by the link orpitma'n 7, is a frame 11 having side bars 12, '13, which are guided between the sides and bottom of the supporting frame 1, wherein the frame 11 is movable longitudinally; and this trame is provided with part of the transforming mechanism.

Inasmuchl as the frame 11 responds to the movement of the link 7 and inasmuch as the extent. of movement is automatically controlled from the jacquard roll it will be apparent that the mciprocati movement c the frame 11 will be a Yaris le cnet depending which 'itvis de "ired toy produce upon die tambour frame, \the automatic positioning of which is the primary function of the jacquard. The movement produced in the frame 11 is Atherefore a variable reciprocating movement.

The function of the frame 11 `is to provide the operating force which is transformed into a rotary movement b which'the tambour frameV positioninge ements are operated; and this reciprocatin movement is much greater than the tina movement required to position the tambour frame, which latter is usually not more than a fraction of an inch at one operation. In the present showing there is no combining of two different movements into a single movement in the jacquard proper, for the purpose of reaching a greater number of ultimate movements with a few parts, althou h the primary movement is reduced be ore acting upon the tambour frame positioning eleme ts; but cross reference willbemade hereina ter to my former patents showing how the present mechanism may be employed in a jacquard wherein two movements of different units are combined to produce a great number of ultimate movements.

' As herein stated the extent of the reciproeating movement is altered by changing the fulcrum of the link 7 on the lever 4, which is the principle on which certain jac uard A mechanisms are based. Bilt the variab e reciprocating movement may be produced by connecting, say the link 7, with the bar M of my said earlier Patent 283,707. In that event the reciprocating movement of the bar M depends upon which of the many jacquard slides.engages the lever O and these 'acquard slides are actuated automatically y the jacquard card or pattern roll.

The shaft 16 in the present showing is the element which is o erated by the reciprocating movement, wiereby the transformation of the movement takes place, and this shaft corresponds in function say with 'the shafts D, D, of my said second patent and it may be similar in every respect except in the. manner of revolvin it, nml the entire ja uard mechanism yond this shaft, that is, ever element succeeding this in the mechanica operation may be the same as in my said second patenth It also corresponds with the shafts G and H of my upon l the extent of movement' said first patent. Instead of revolving l'this shaft by means of the rack and gear in the manner shown in my previous 'patent I have employed a device susceptible of any adjustment Within the extreme limits of the machine.

, The mechanism by which the reciprocatin elements cause the operation of the re- -vo ving elements is very simple and positive and the band shown in myl parent ap lication may be dispensed wit The sha 16, which is the element on which'the recipro- :cating mechanism operates forms the fulcruxn oint of two levers 14, 15, which are [joui-na ed loosely on the shaft and are dis` osed in opposite directions. `The arm or ever 14 is provided with a .toothed segment .18 which meshes with the rack 19 of the bar 13 forming art of the reciprocating frame 11; while t e lever 15 has a simi- .lar toothed -s ment 20 which =meshes with the'rack 21-0 ybar 12 of the frame 11 and both segments are in .mesh with their respective racks at all times. Each lever carries a clutching element adapted to operate on the drum 17 carried by the shaft 16. lOn the lever 14 is alever 22 which fulcrums at 26 and its engagin end 23 is preferably serrated at 24 to pr nce sufficient friction 'when engaged with the drum to prevent slipping andhthe engaging 4surface may bc eat' enouor. to insure r ipping.

he other e'iid 27 of the'leggris-engg'xaged by a segmental plate 28 carried by a. sliding plate 38' and the' engaging surface of the part 28 is struckon a'n arc centering in the shaft 16. A spring 25 is connected with the Aend of the lever 22 and with the lever 14 and tends to pull the end 23 into engagement with the drum 17. The leve:` 15 is similarly provided with. a clutching laver 30 having the clutching end 31 pulled toward the druih 17 by a spring 33; and the lever 30 fulcrums from the point 29 and has an end 34 which is en aged by the segmental plate 35 on the p ate 38. The levers 14 and l5 are reversely disposed. The segmental plates 28 and 35 are so disposed that either of the levers 14, 15, may be enraged with the drum 17 but. not both at t e same time.

From the description thus fai' it has been shown how the operating foi-ce is derived and how the extent of movement is contiolled. Another important factor is the device for determining the direction of movement when it is converted into a rotary movement. IV refer to employ a device for this which will apply tlupower therefor thiou h Cei-tain elements and to initiate such y means of other elements. the latter living' .also controlled from the jacquard card. The plato 23H is adapted to he reciprocated in itsv longitudinal direction and the means for o erating it is adapted to produce any one of t ree different positions. In one the right clutch will be thrown into engagement with the drum 17; in another the left one in and the right one out; and in the third both clutches out, for the return of the reciprocating frame.

The plate. 38 corresponds in o eration with the plate L in my said secon patent and the mechanism for operating it may be the same. The frame 11 is reclprocated at each revolution of the main shaft 2 through the cam 3, the lever 4, and the link 7 and the rccipr'ocation of this frame causes the levers 14 and 15 to revolve about the shaft 16 in directions opposite to each other and the extent of movement of these levers will depend upon the extent of movement of the frame 11, which will vary according to the control of the jacquard card. The machine is shown in the drawing in the starting position with the plate 38 1n its intermediate position. In such position the clutches 14 and 15 are held out of engagement with the drum 17. If, now, thenext stitching operation requires that the shaft 16 be revolved to the right, then the rod 53 will have been positioned by-the jacquard card, in the position shown in the drawings, when the slot 45 of the arm 42 will engage the pin 51 of the lever 48. The next movement of the rod 50 longitudinally will rocltthe lever 47 which is secured on the shaft 49 and this will rock the lever 42, 43. As the latter is fulcrumed at 44 to the plate 38 the latter will be reciprocated in the guiding flanges 39, to the left. This will cause the segmental tm to rock the lever 30 away from .the and the movement of the segmental part 28 will permit the clutching lever 22 to bedrawn by its sprrlilng 25 into e agement with the drum. e plate 38 w' l remain in ita. lefthand position, when the frame 11 is drawn b the link 7 and in consequence of the rocking of the lever 14 by the rack 19 and and its shaft 16 be revolvedto the right, the extent of movement oirwhieh will depend upon the extent of movement of the frame 11. XVhen the frame 11 com letes its forward movement the rod 50 wi be reversed in its direction and as a result the lever 47 will rock the shaft 49 and the lever 42, 43, back to an intermediate position as in my said second patent. This will rock both clutching levers 14 and 15 into a diseng ing position, free of the drum 17. The rection of movement of the frame 11 is now reversed and since neither clutching lever a the drum the return movement of the me 11-wi1l be an idle one, leaving the shaft 16 where is was placed by the forward movement of the frame 11. If the next movement of the shaft 16 is to be in ment 18 the drum 17 forming devices as the same direction the above operation is repeated; but should it be necessary to move the shaft 16 to the left, then the rod 53 is operated by the jacquard card to move the lever 42, 43, in a direction reverse to the first operation and this will bring the recess 46 of the arm 43 into engagement with the pin 52 on lever 48. The movement of the rod 50 will now rock the shaft 49, through the lever 47 in a direction reverse to that rst described and the plate 38 will be moved to the right. This will carry the clutching lever 22 away from the'drum aud the end 31 of the other clutching lever 30 will be permitted to be moved by its spring into engagement with the drum. The forward movement of the frame 11 will now cause the shaft 16 to be rotated to the left and the extent of rotation will again depend upon the extent of rcciprocation of the frame 11. Upon the completion ofthe forward reciprocation the plate 38 will be moved to its intermediate position, both clutches will be thrown out and the return movement of the frame 11 will not alter the position of the shaft 16. In this manner a variable reciprocating movement is transformed into a variable rotary movement. The fact that the clutching levels move with the drum when revolving the latter and the fact that there may be sutlicient. engaging surface, avoids any liability of slippinar between the clutching and clutched alcun-nts during the transforming operation. y

The d'cvice thus far described is duplicated as many times as may be necessary for the particular jacquard mechanism to which it is applied. Where a single initial movement is produced by the changing fulcrum method, or by the lfgwr i =gaging`various slidesA as in my said first patent there willv vbe two such devices as has been described; and they are preferably su erim- 'y When two movements of di erent units are united to produce a single ultimete movement in t e jacquard proper as hereinbefore mentioned and as shown in my said second patent then four sets of transherein shown will be used. As the combining of the two sets of 'movements takes place beyond the transform' devices the mechanism from the latter ough to the tambour frame may be the same as m said patent.

Various changes may be. made in the construction without departing from the spirit and scope of'my invention.

Having described my invention what I claim is; c

A jacquard mechanism embodying reciprocatxngmeans adapted to bc operated vul ving extents, and having racks. rotative mechanism including a sha ft, oscillatory clements fulcrumed on said shaft and provided with'toothed sectors meshing with the racks of said reciprocat' means, whereb the oscillatory elements will be' operated in different directions and accorflin to the extent of the operations of sai reci rocating means, clutching levers moving wit i said oscillatory elements, each ada ted to clutch a portion of the rotative mec anism, whereby the latter will be operated by the reciprocating means, springs tending tomovc the clutching levers into operative relation with the rotative mechanism .and 'acquard card controlled means for controlling the clutch levers, embodying a reciprocating member havin plates for moving said levers and 15 curve in the arcof their movement.

Si ned at the city coiintv and State of New ork, this 14th dav of ovember, 1910.

Witnesses:

WM. H. MATNER, J Amis A. CRAIG.

dplss o! this patent la, be obtained for ive cents each, by addressing the Commissioner o! latents. Washington, D. C.

Images