US1033889A - Jacquard mechanism. - Google Patents

Description

J. A. GROEBLI.

JACQUARD MECHANISM. APPLICATION FILED m. 17, 1910.

1,033,839. Patented July 30, 1912.

. tion.

ing into the hundreds,

JOSEPH A. GROEBLI, OF NEW YORK, N. Y

JAooUARD MECHANISM.

Application filed November 17, 19101 To all whom it may concern:

Be it known that I, JOSEPH A. GROEBLI, a citizen of the United States, and a resident of the city, county, and State of New York, have, invented certain new and useful Improvements in Jacquard Mechanisms, of which the following is a specification.

The present invention relates to improvements in jacquards, such as those used for operating embroidering machines.

jacquard mechanism, but to one of the vital mechanisms forming a part of the complete jacquard I will not here describe a complete jacquard but will only describe the present mechanism and show its application to one or more jacquards of well known construche present invention is more particularly adapted for use in jacquards which control the operation of embroidering machines of the large type. ering machines thereare many needles, rangand the fabric is disposed before these needles, which latter opcrate in and out in a given location, while the tambour frame with the fabric carried thereon is moved in relation to the needles for the purpose of determining the length and location of the stitches.

It is the primary object of the jacquards under consideration to position this tambour frame for each stitch and the mechanism by which this is done is rather'complicated. Certain U. S. Patents have been issued to me or to my assignee, Numbers 283,707 and 528,632, and dated August 21, 1883 and November 6, 1894-, respectively, for jacquard mechanisms of the kind herein referred to and reference will be made to these patents throughout this case. The present invention may be embodied in either of the constructions shown in those patents as well as in other constructions.

Jacquards fo the purpose stated are required to position the tambour frame of the embroider-ing machine for each stitch and they must be capable of producing a great number of positions of the tambour frame withincertain limits and the purpose of the resent invention 1s to make it possible tolncrease the number of'positions which the acquard can produce in the tambour frame. Although the tambour frame has a consider- Specifieation of Letters Patent.

As the present invention does notrun to the entire elements are moved In such embroid- Serial No. 592,754.

able amplitude of movement to produce the desired figures on the fabric, nevertheless the movement of the tambour frame during anyone stitch it is considered that the tambour frame is 20 to 30 feet long, such movement usually be movement upon the tambour frame by the jacquard without initiating a much larger movement in the first instance by means of the jacquard card and cooperating mechanism, and the above jacquar'ds are constructedso thatthe movement in the jacquard when initiated is much larger than the movement imparted to the tambour frame and this movement is reduced in the jacquard before the tambour frame positioning by the jacquard. When the movementis started it is usually a reciprocating movement and for the best results the reciprocating movement is transformed into a rotative movement for the purpose of affecting the tambour frame positioning mechanism. In the said patents I have shown mechanism for producing the reciprocatin movement, for reducing the move ment after it is initiated, and for transforming the reciprocating into a rotary movement. For the transforming operation I employed a frame having two racks, either of which could be made to-act upon and revolve a gear, the latter being carried upon a shaft forming a partof the rotary movement mechanismand by throwing either of the racks into engagement with the gear the direction of the rotary movement may be changed. The reciprocating movement is unchanging in direction, while the rotary movement must be capable of change for either a right or left revolution and it is because of this that the transforming mechanism must be capable of changing the reciprocating movement into a ,rotary movement of either direction. Furthermore, the reciprocating movement is a'varying one, depending upon the therefore the transforming mechanism must be capable of transforming a reciprocating movement of any extent, within the limits of the machine, into a corresponding rotary movement. Also it must be capable of transforming the reciprocating movements Patented July 30, 1912.

is comparatively small, when ing but a fraction of an inch. It would. be almost impossible to produce this small particular stitch and of unvarying direction into rotary more ments which might be consecutively in a given direction or alternately in different directions. This necessitates an engaging and disengaging action between the reciprocating and rotary mechanisms. In my said patents there is a transforming mechanism but it has limitations, since the racks can not be thrown into engagement with the gear at any point as the teeth of the racks must mesh and therefore an engagement in every possible position is not possible in such constructions. It would not be sufficient to make the rack bars smooth and the gear smooth as there would not be suflicient engaging surface to move the mechanism which positions the tambour frame.

In the present case I have therefore provided.a mechanism wherein the racks, or at least one of them, can always be in mesh with the gear and-I interpose an engaging and disengaging mechanism operating between thegear and an element of the rotary mechanism, so-that the racks do not have to be both racks move back in their return operation. The engaging and disengaging mechanismI have shown. automatically operated by the jacquard. In the present device it is possible to transform a reciprocating movement of any extent, within the limits of the\ machine, into a'corresponding rotary movement and without loss of motion or inaccuracy in the operation.

In the drawings forming apart of this application; Figure 1 is a plan view of my improved mechanism in the preferred form, which can be duplicated as many times as may be necessary, after, Fig. 2 is a sectional view taken on the,line 2-2 of Fig. '1. looking in the direction of the arrows, Fig; 3 is a sectional view taken on the line:33 of Fig. 1 looking in the direction of the arrows.

In the present drawing.I have shown only a part of the complete jacquard as itwill be understood from the description how this mechanism is related to the remainder of the jacquard. The shaft 1 is the main shaft of the jacquard. and from which the various operating parts are moved. and on this shaft there is provided a cam 2, which is provided with an eccentri'c groove 3. In'the example of the application of my invention here shown th ore is a lever 4t which-felcrums from the point 6, and it has a stud 5, which travels in the groove 3 of the cam. 2, whereby the-lever 41 is rocked a predetermined extent at each revolution of the shaft 1. This movement must be altered in extent according to the movement required to position the tambour frame of the emloroidering machine for each stitch. In'ccrtain jacquard'constructions, well known in the art, this is accomdisengaged from the gear when the as will appear herein-.

plished by changing the point of fulcrum of the reciprocating mechanism with the lever 4. I have shown a link 7, which has a fulcrum pin 8 engaging in the slot 9 of the lever 4 and the link 7 operates the reciprocatingmechanism. In the jacquards of the class last referred to the extent of movement of the reciprocating mechanism is determined by changing the position of the fulcrum pin 8 in the slot 9 of the lever 4, and as the mechanism for this is known and as it is complicated, it will not be set forth in detail here. The link 7 is fulcrumed at.10 to a reciprocating frame 11,

than the final movement imparted to the tambour frame of the embroidering machine may vary at each operation of the machine. The frame cross bars 1 1, .15, which. guide the movable rack frame 16. The latter frame is adapt-- ed to=reciprocate with the frame 11, but it is also adapted to move laterally in rela tion thereto and the lateral movement is controlled by mechanism which is automatically initiated by the jacquard card, or pattern roll. The frame 16 is preferably, although not necessarily, rectangular in shape, andthe side bars of this frame are provided wit- h racks 17 and 18, facing each other, either .of which may. be placed in mesh with the gear 19, which is part of the 11 has guiding grooves 13 on its forward and rearward revolving mechanism of the jacquard. The

location of the racks 17 and 18 on each side of the gear 19 is such that either of the racks-must engage the gear, or both of the racks may partly engage the gear at the same time, according to. the position of the rack frame in relation to the gear. On the shaft 1 there is another cam 20, which has a groove 21 adapted to impart a movement to. the lever 22, in a direction parallel to the shaft 1. The lever is provided. with a pin23 which travels in the groove 21 of this cam and at eachrevolut-ion of the shaft 1 the lever 22 is rocked on its fulcrum in the bracket 24. The lower end of this lever is adapted to operate the device by which the reciprocating and rotary mechanisms (are thrown into operative relation. The

shaft 28 is a part of the rotary mechanism and corresponds with the shafts D and D of my said second patent, and the functions of this shaft and as many others as maybe necessary, may he the same as the said shafts in my said patent. Also the mcchanism operated by thisshaft may be the same shaft 28 but by reason'of the key the I the male element of flo the right of Fig. 1

, ther as in said patent. Above the gear 19 there is provided a movable clutch element 27, forming one half of a cone clutch. The clutch element 27 is keyed to the shaft 28 by means of a key.29, and is adapted to slide vertically on the shaft 28. The clutch element 27 is movable vertically on the shaft respondsto the revolutions of the clutch. The clutch element 27 has a circumferential groove 26, and in this engages the pin 25 carried on the end of the lever 22. The gear 19 has a clutch'element 30, which forms the clutch and it engages with the surface 31 of the clutch element 27. The gear 1.9 is loosely journalcd on the shaft 28 and is held between the two collars 32 and 33, below and above. v

There is a plate 34, which is guided in thev transverse flanges 37 of the stationary frame 12, and which is adapted to move laterally .of the frame 16, and to be positioned in any of three positions by automatic means initiated from the jacquard card, for the purpose of determining the direction of the rotary movementinto which the reciprocating movement is transformed. This plate and the means for operating it are't-he same as in my said second patent where the details of construction and operation are fully set forth. The plate 34 has two upwardly extending flanges 35, 36, be tween which the movable frame 16 lies and the latter is reciprocated laterthe movable frame 11. there is shown a rod by which ally in relation to 88 which is periodically the jacquard shaft and a rod 39 which is moved longitudinally by means of the jacquard card and is therefore antomatically controlled from the jacquard tern roll. The rod 38 provides ating force for the shifting of the frame 16 through the plate 34, while the rod 39 initiates the shifting and determines the direction. The rod 38, the same as in said patent operates an arm 40, which is secured on a shaft 41 and on the latter is carried a lever '42, which is provided with pins 46 and 47 on opposite sides of the shaft 41. There is a two armed lever 43, 44, which is fulcrumed at 45 to the plate 34, which latter it reeiprocates. The arm 43 has a slot 48 and the arm 44. a slot 49, facing each other,

which are adapted to be engaged respectively by the pins 46 and 47 of the lever 42. The arm 44 also is connected with the rod 39.

The operation of the device is as follows: Vith the parts as shown in Fig. 1 the racks 17 and 18 are each partly in mesh with the gear 19 and it will be necessary to throw one out of mesh andfthe other farin mesh before the reciprocating mechanism begins operation. If. the rod 39 reciprocated from card or patthe oper be moved by a perforation in the jacquard card to the position shown, then the pin 46 on the lever 42 will be engaged in the slot 48 of the arm 43. The movement of the rod 38 will now rock the arm 40, thus the shaft 41 and thereby the lever 43, 44, to the left. This will move the plate 34 to the left and with it the frame 16, sufficient to throw the rack 18 entirely into mesh with the gear 19 and the partially meshing rack 17 out of mesh. The gear 19 will now be subject to the action'of the rack 18' reciprocating mechanism now being ready for its operation, the lever 22 will be rocked by the action of the cam 20, until the female clutch element 27 is forced into engagement with the male element 30, carried by the gear 19. Previously to this the gear 19 was loose on the shaft 28, but by reason of the clutch it is made fast and the movement of the gear 19 will revolve the shaft 28 with it. The revolution of the shaft 1 and with it the cam 2, will cause the rocking of the lever 4 and the reciprocation of the link 7. The extent of movement of the link 7 will depend upon'the point of fulcrum 8, i

which is automatically controlled in certain jacquards from the jacquardcard. ,VVhen the link 7 moves toward the top of the sheet the frame 11 will move with it and the frame 16, will be carried with the frame 11. Since the rack 18 is in mesh with the gear 19, the latter,

revolution will depend upon the extent of reciprocation of the frames 11 and 16 and link 7. At the termination of the forward movement of the frame 16, the lever 22 will be {rocked by the cam 20, reversely to its first position and as a result the clutch element 27 will be moved out of contact with the clutch f element 30, thereby making the gear 19 again loose on the shaft 28 ,ready for the return movement of the reciprocating mechanism. The direction of movement of'the link 7, the frames 11 and 16 is now reversed and the rack 18, still meshing with the gear 19 will turn the latter, but without changing the position of the shaft 28. VJhen the return movement has been completed the rod 38 will be moved suiliciently to rock the levers 42, and 43, 44, back to an intermediate position, when the plate 34 will move the frame 16 into such a position as will bring both racks 17 and 1.8 into partial mesh with the gear 19. If the next movement is to be in the same direction the last operation will be repeated, but should it be desired to turn the shaft 28 to the right, then the rod the lever 43, 44, so as to bring the notch 49 of the lever arm 44 into engagement with the pin 47 Thcreupon the movement of the rod 38 will cause the lever 43, 44, to be as well as the shaft 28, will' :be revolved to'the left, and the extent of The 39 will rock.

moved to the right, carrying the plate 34 to the right. This will throw the rack 17 entirely into mesh with the gear 19 and the rack 18 entirely out. Upon the reciprocation of the frames the shaft 28'will now be revolved to the right and the return movement of the frames will one, leaving the shaft una 'ected.

In the jacquard mechanism such as in my said first patent the lever 0 moves the bar M, varying extents each time, according to the particular jacquard slide with which the lever O engages. The present mechanism could be embodiedin such a jacquard by simply substituting the bar M of said patent for the frame 11 of the present showing. The transforming mechanism would then operate as it does in the present showing. It would be necessary to employ two transforming devices such as are here shown in such construction, since there are two shafts G and H to be operated.

In the jacquard construct-ion such as is shown in my said second patent two movements of different units are combined in the jacquard properbefore actuating the tambour frame positioning elements and by various combinations of any two movements a great number of final movements can be had with a few parts in the jacquard. In employing the present invention in that con struction there will be four of-the devices here shown, but there will be no lever such as 4, nor the link 7. Instead there will be four frames 11, and corresponding mechanism, which will take the place of and be operated like, the frames 1, 1, 1 and 1 in said second patent. As the combination of the two movements takes place after the transformation of the reciprocating into a rotary movement the parts bcyond'the shaft 28 can' beas they are in the said patent. That is, the entire mechanism of that patent may be used and the present mechanism substituted for such parts of that mechanism as are intended for changing the reciprocating into a rotary movement.

Under the present invention it is possible 4 to transform a reciprocating movement of any extent within the lllDltSlif the machine into a corresponding rotary movement. 'lh'ere is no limitation placed upon the transformingmechanism by reason of the meshing of gears and the transformation is positive. I urthermore I am able tohtilize the advantages of the rack and gear transformation, but without being limited by the shortcomings of the mechanism referred in herein. The two clutch elements while posh tive in their action, may be engaged with each other at any point and therefore .lhe exact morehient to be transformed may vary to any extent within the limits of the machine. Furllwrmore there is no movement,

during the transloruuuion operation, lie-- tjtgain be an idle.

nism without departing from the spirit and .scope of m invention. Having escribed my invention-What I claim is: i 1. Ina jacquard mechanism, reciprocating mechanism .embodying racks, rotative mechanism embodying a'shaft and a gear, jacquard card controlled means for throwing either of said racks into operative relay tion with said gear, thereby controlling the direction of rotation of the rotative mecha-v msm by the reciprocating mechanism :and means for throwing said shaft into and out of operative relation with said gear and automatic means for operating the same.

'2. In a jacquard mechanism, reciprocating mechanism embodying racks, rotative mechanism embodying a shaft and a gear, jacquard card controlled means for throwing either of said'racks into operative relation with said gear, thereby controlling the direc tion of rotation of the rotative mechanism by the reciprocating mechanism, clutching elements for throwing the shaft into operative relation with said: gear, and automatic means for throwing said clutch in or out, said clutching, elements being adapted to engage with each other in such a way that there will be no relative movement between them during the operation of said shaft'by said gear.

3. A jacquard mechanism comprising reciprocating mechanism adapted to be moved 'arying extents, said reciprocating mecha-" nism embodying a reciprocating rack frame having racks, said rack frame being laterally movable, rotative mechanism embodying a gear for operating the same, means for moving the rack frame laterally to throw either of said racks into mesh with said gear, thereby controlling the direction of rotation of said gear, a clutch for; throwing the rotative mechanism into operation by the gear and automatic means for operating said clutch;

s. A jacquard mechanism embodying reciprocating mechanism adapted to be moved varying extents, said reciprocating mechanism embodying a reciprocatin frame, a laterally movable frame carried t ereby having racks, a rotative mechanism embodying a shaft and gear said gear being-so placed that it will mesh with either of said racks or with both, jacquard card operated mechanism adapted to move said rack frame laterally to cause the operation of the gear by either ot'said racks, thereby controlling the direction of rotation of the gear-and adapted to produce an engagement of both ofsaid racks with the gearafter-each reciprocation ol the reciprocatlngmechamsm. a ciutch on-' erating to-throw said shaft and gear into operatlve relation and means automatically operated with the jacquard mechanism adapted to throwsaid clutch in duringyth'e movement of the re'ciprocatin mecha ism in one direct-ion and to throw 1t out for the returnmovement thereof. 1

Signed at the city eou nt jriend State of New York, this l'fith (iay of November, 1910.

JOSEPI-IA. GROEBLI.

-Witnesses:

WM. H. MANTNER,' JAMES A. CRAIG.

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