US2341952A - Lace machine - Google Patents

Description

Feb. 15, 1944. scHu 2,341,952

LACE MACHINE Fi-led Aug. 10, 1943 B-SheetS-Sheet 1 F 15, 1944- A. F. SCHULER I ,34

LACE MACHINE 7 Filed Aug. 10, 1943 8 Sheets-Sheet 2 Feb. 1.5-, 1944. A F, scHpLER 2,341,952

LACE MACHINE Filed Aug. 10, 1945 8 Sheets-Sheet 3 Feb. 15,1944. A, F. scHuLER 2,341,952

LA CE MACHINE Filed Aug. 10, 1943 s Sheets-Sheet! Feb. 15, 1944. A. F. SCHULER ts-Shet 5 LACE MACHINE Filed Aug. 10, 1943 Feb. 15, 1944. A. F. SCHULER LACE MACHINE Filed Aug. 10, 1945 8 Sheets-Sheet 6 Feb. 15, 1944. SCHULER 2,341,952

LACE MACHINE Filed Aug. 10, 1943 8 Sheets-Sheet 8' y (I 2% i r H-Q- V /7 Patented Feb. 15, 1944} Adam F. Schuler, Gouverneur, N. Y.;

Paul

Krasley, executor of said Adam F. Schuler, deceased, assignor to Chester Lace Mills, Chester, Pa., a corporation of Pennsylvania Application August 10, 1943, Serial No. 498,103

15 Claims.

This invention relates to an attachment for a lace-making machine, for controlling, manipulating, grouping and holding predetermined warp and weft threads in predetermined relation to each other, during the weaving of a lace or net fabric on the machine, for passage of the shuttle threads between the prearranged warps and wefts and around certain of these threads to complete the fabric.

The attachment of the present invention is particularly adapted to the manufacture of net fabrics in accordance with the disclosure of my copending application Serial No. 478,848, filed March 11, 1943.

The construction and operation of the attachment of the present invention will be fully disclosed hereinafter, reference being had to the accompanying drawings of which:

Fig. 1 is a front elevation of sufiicient of a lace-making machine to illustrate the application of the attachment of the present invention thereto;

' Fig. 2 is a transverse sectional elevational taken on the line 2-2 of Fig. 1;

Fig. 3 is an end elevation of a portion of the lace machine showing the attachment of the present invention applied thereto, as viewed from the plane 33, Fig. 1;

Fig. 4 is a transverse sectional elevation taken on the line 4-4, Fig. 1;

Fig. 5 is a fragmentary plan view, as viewed from the plane 5-5, Fig. 4;

Fig. 6 is a detached perspective view of the attachment partly in section;

Fig. '7 is a rear elevation of the attachment looking in the direction of the arrow at, Fig. 6;

Fig. 8 is a sectional plan view of the attachment taken on the line 8--8, Fig. 7;

Figs. 9, 10, 11, 12, 13 and 14 are diagrammatic plan views, similar to Fig. 8, showing the elements in different positions;

Fig. 15 is a diagrammatic view of a swatch of the fabric; and

Figs. 16 and 17 illustrate fragments of the thread-controlling bars of the machine.

As shown in Figs. 1 and 2, the machine comprises a plurality of transversely extending frame members I, I, certain of which are provided with brackets 2 for supporting a fabric take-01f roll 3 and a fabric take-up roll 4. The fabric Z extends from the take-off roll 3 downwardly over a workbar 5 which is supported by brackets 6 on intermediate frame members I..

From the lower edge 1 of the work-bar 5, ad- J'acent which the fabric Zis formed, the warp threads 2: and w of the fabric extend downwardly to warp beams V and W respectively, which are located adjacent the base line of the machine, at the opposite sides respectively of the longitudinal central vertical plane of the machine. Extending downwardly from the lower edge 1 of the work-bar 5, intermediate the diverging warp threads 12 and w, are weft or spool threads :1: and y. The spool threads at and 11 pass around a guide bar 8, located adjacent the base line of the machine, to a creel 9 located at the back of the machine and on which are mounted the spools l0, Ill. Also extending from the point of weaving adjacent the edge I of the work-bar 5, are shuttle threads s which pass to bobbins S carried by the oscillating shuttles l2 of the machine.

Lingoes II are suspended on the weft threads 1: and y to apply the necessary tension thereto. Any suitable conventional means may be provided for braking the rotation of the warp beams V and W to apply the necessary tension to the warp threads 2) and w.

The shuttles l2 are adapted to slide in arcuate grooves formed in shuttle guide bars I3 and 14, between which the warp and weft threads '0, w, m, and :11 extend, said shuttle guide bars being rigidly secured to the frame members I, l and extending longitudinally of the machine.

The warp threads '0 and w and the weft threads m and 1. Pass through eyes I5, l5 formed on or carried by thread bars l6, ll, I8 and I9 respectively, as clearly shown in Fig. 16. These thread bars extend longitudinally of the machine and are slidably mounted in guides 20 secured to the frame members I.

Relative shifting of the threads v, w, a: and y, to produce a pattern, is eiiected by mechanism hereinafter described. After each shifting of the threads with respect to each other, by the bars l6, ll, I8 and la, the threads are combed and held in vertical parallel laterally spaced relation for the passage of the shuttles l2, by means of comb bars 2! and 22. After shifting of the bars l6, ll, l8 and is, the combs 2| and 22 are adapted to enter the hanging warps and wefts at a point well below the lower edge 1 of the work-bar 5, and to move upwardly while in contact with the hanging threads to a point adjacent lower edge I of the work-bar 5.

" The comb bars 2| and 22 operate alternately, and tlieir motions are controlled by cams 23-and 24, ona- cam shaft 25, and 26 and 27, on a cam shaft 28. The cam shafts 25 and '28 are rotatably mounted on the frame members I, and are rotated in unison by intermeshing gears 29 and 30, respectively secured to the cam shafts 25 and 28.

The oscillations of the shuttle l2 through the hanging warp and weft threads are effected by hook bars 3| and 32, which, in turn, are actuated by a crank 33 on a longitudinal shaft 34, which latter is provided with a gear 35 intermeshing with the gear 29o-nthe cam shaft 25.

The warp threads 22 and w areadapted 'to be shifted laterally, in opposite directions simultaneously, to an extent equal to the lateral spacing of the shuttles i2. are moved in opposite directions respectively, by the bars iii and IT, for passage of the shuttles 12 from the back shuttle guide harm to the front shuttle guide bar i l, to carry the shuttle threads s to one side of the separated Warp threads, whereupon, the warp-controlling bars l6 and I! are respectively shifted reversely for passage of the shuttles l2 from the front shuttle guide bar M to the back shuttle guide bar l3, to carry the shuttle threads 8 around in front of the warps, to the opposite sides thereof, and back of said warps.

Successive repeats of the lateral shifting or shogging of the warp threads 1; and w and the oscillations of the shuttles l2, through the Warp threads, effects twisting or wrapping of the shuttle threads s around the warp threads n and respectively.

'The longitudinal shifting of the warp control bars l6 and I! is effected by levers 36 and 31, which are pivotally mounted on a common shaft 38 extending transversely of the machine and provided-with cam followers 39 and 4G. The cam followers 39 and ll] engage shogging cams H and 42 on the cam shafts 25 and 28 respectively, said engagement being maintained by springs 4 la and 42a (Fig. 9).

The mechanism, so far described is common to a conventional lace making machine, such for example as that shown in prior patent to Joseph H. Bromley, Jr., #1,066,789, dated July 8, 1913. For the purpose of clarity the jacks, the jackcontrolling mechanism, and the jacquard mechanism have been eliminated from the present drawings, although it will be understood that thes mechanisms may be operated in whole or in part in conjunction with the mechanism of the present invention,.if desired, for producing 'certain patterns in fabrics woven on the loom.

The, present invention is particularly directed to, an attachment for shiftingv the weft or spool threadcontrolling bars 18 and i9, to produce a net fabric, such as that disclosed inthe aforesaid copending application Serial No. 478,848, filed March 11, 1943.

The attachment is shown particularly in Figs. 6, 7 and 8 of the drawings. As shown in the swatch illustrated diagrammatically in Fig. 15, each of the weft threads :r'is adapted to pass between 'a 'pair of warp threads 1), v, and each of the weft threads y is adapted to pass between a pair of the warp threads w, w, at relatively spaced intervals longitudinally of the warp threads 12, v and w, w, with the pairs of warp threads 'in each instance bound together intermediate the points where the Weft threads pass between the adjacently disposed warp threads, by a predetermined number of wrappin'gs or the shuttle threads 8.

Atrelatively spaced intervals, the weft threads :1: and the weft threads y extend from the wales ofthe fabric in which these wefts are respectively bound for the greater part of their lengths, into The warp threads 1; and 'w the wales lying immediately adjacent thereto, to be bound in the receiving wales by a predetermined number of twists of the shuttle threads around the pairs of warp threads in the respective receiving wales, after which the weft threads :1: and y again return to the wales of their respective origins.

Each of the warp threads at alternately travels from its Wale of origin to the w'al'e lying immediately to the left thereof, then back into its Wale of origin, then into the wale lying immediately to "the right thereof, after which it returns to its Wale of origin. Each of the weft threads 11 similarly extends from its Wale of origin into the wales lying immediately to the right and left thereof, alternately, said wefts a: and y crossing each other at each of the deviations thereof.

This alternate staggered tying of the adjacent wales together produces the net fabric shown in the aforesaid pending application.

In order to effect the shifting of the weft threads to the right and to the left of their wales of origin, and in order to effect tying of the weft threads in the Wales to which they are periodically attached, four lateral positions of each thread is required; and in order to effect the shifting of each of the threads to each of its required positions, the bars l8 and 19, which respectively control the weft threads in and y, are "required to be held in each of the four different positions for a predetermined length of time while the shuttles l2 are making the required number of wrappings of the shuttle threads s around the pairs of warp threads 12 and in between which the weft threads as and y respectively pass.

As shown in Figs. 6, '7 and 8, movements of the thread bars i8 and ii! are controlled by carriages 50 and 88 respectively; The carriages 5i] and '80 are adapted to slide horizontally in .a bracket 43 secured to the end frame I of the machine. The carriages 50 and 80 are adapted to be moved in opposite directions, simultaneously, by levers 5| and 8! respectively, said levers being pivotally mounted on a common shaft 34 which'is secured in the bracket 43.

The levers 5| andiil are provided with cam followers 52 and 82 respectively, which are held in contact with the peripheries of cams 53 and 83 respectively by springs 54 and 84 respectively. The cams 53 and 83 are secured to a common transverse shaft 45 which is provided with a gear 46. The gear 56 meshes with a pinion 41 on the cam shaft 28. As the shaft 45 is rotated, the levers 5i and 8! are simultaneously rocked in opposite directions and caused to dwell, for predetermined periods of time, by the cams '53 and 83 on said shaft i5. Suchrocking and dwelling of levers 5| arid-8i effects corresponding longitudinal movements, in opposite directions simultaneously, of the carriages 50 'and 8?],and a corresponding dwell in the movements thereof.

The carriages 50 and 80 are provided-with guide boxes 55 and 85 respectively, in which are vertically, slidably mounted two series of barpositionin-g elementstifix, 55y and 85m, 85y respectively, which are adapted to be dropped between a stop 55a on the carriage 5n and stops lBa and lea on the bars l8 and I9 respectively, and between a stop 85b on the carriage 80 and stops. I81) and I91) on the bars 18 and i9 respec-' tively, for controlling the positions of the threadbars l8 and I9.

As shown in Fig. 6, the se'ries 55'x includes three droppers ml, .262, 0:3, the series Fitz includes three droppers yl, y2, 3, the series'BSac includes three dro ers rag-x; is, and-the series "851;

includes threedroppers 11/4, 11/5, 1 /6. r

As shown in Fig. 15,- the weft threads .r are adapted to bemoved into, and to hang in, four different vertical positions, indicated at Ix, 23:, 3a: and 4.1: during successive stages respectively of the weaving of the fabric; and the weft threads 11 are adapted to be moved into, and hang in, four different vertical positions Iy, 2y, 3y, and 4y, Whilethe shuttle threads 8 is given a predetermined number of twists around the pairs of 'adjacent warp threads 12, v and w, w, with which the weft threads :1: and y are respectively associated throughout the greater portions of the lengths of the wales of the fabric formed thereby. Starting with that portion of the fabric at and adjacent the line A A, Fig. 15, the weft threads :1: are held in the position indicated by the short vertical broken line 3w. while a shuttle thread s makes a predetermined number of Wraps around the two warp threads 2:, v; and the Weft threads y are held in the position indicated by the short vertical broken line 2y' while a shuttle thread 3 makes three wraps around the two warp threads In order to effect this above noted holding of the weft threads :2 and y,two droppers ml and 1:2 are in position between the stop 55a on the carriage 50 and the stop [8a on the bar 18; and one dropper yl is in position between the stop 55a on the carriage 50 and the stop l9a on the bar I9, as indicated in Fig. 9, these droppers having been placed in position adjacent to stop 55a, prior to the carriage 50 beingmoved to the right, as shown in Fig. 9, to effect the aforesaid positioning of the weft threads at and 2/ respectively.

The lowering and raising of the various droppers into and out of position between the stops 55a and 85b, on the carriages 50 and 80 and the stops l8a, 19a, I812 and [9b on the bars l8 and I9, are effected by ordinary jacquard mechanism associated with the loom, as will be hereinafter described.

It will be noted in Fig. 9 that, while the carriage 50 is holding the thread bars l8 and I9 in the positions above noted, the stops I81) and I9?) are spaced a considerable distance'from the stop 85b on the carriage 80, which has been moved to the left simultaneously with the shift to the right of the carriage 50 to afford free movement of the desired droppers between said stops.

While the mechanism is set up for holding the threads :1: and 11 during the making of the portion of the fabric adjacent the line AA, the jacquard mechanism efiects setting up of the proper arrangement of droppers between the stop 85b on the carriage 80 and the stops [8b and 19b on the bars 18 and IQ, for shifting the threads as and y to produce the portion of the fabric adjacent the line B-B of Fig. 15, with one dropper cs4 placed in position between the stop 8% of the carriage 8t and the stop lab on the bar [8, and two droppers 11 4 and 11/5 placed in positionbetween the stop 851) on the carriage '80 and the stop l9b on the bar Ill.

The position of the carriages 50 and 80 is then reversed from those shown in Fig. 9 to those shown in Fig. 10, the carriage 50 moving to the left simultaneously with the moving of the carriage 89 to the right. The droppers g4 and 115, being in position adjacent the stop 85b of the carriage 8t, engage the stop l9b on the bar [9 and move the weft threads y to the position indicated at 31/; and the dropper :04, being in position between the stop'85b of-the-carriage 80 and the stop 18b on'the bar I8,move the weft threads :1: to the position indicated at 2x. The threads :1: and ynow hang in vertical positions corresponding to the line 29: and 31/. respectively, while the shuttle threads s make .a number of wraps around the pairs of warps v, 'u and w, w respectively.

Whilethe carriages 5B and are in the position shown in Fig. 10, effecting a holding of the threads at and y in the positions 21: and 3y respectively, the jacquard mechanism is effecting a setting up of the droppers for positioning the threads .1: and y for making that portion of the fabric shown adjacent the line (3-0, wherein each weft thread 1: moves from its wale of origin with the warps o, '0 across the space between that and the next adjacent wale and passes between the warps w, w of said next adjacent wale which, in this instance, lies to the left of the wale of origin of the weft :c; and the weft threads 11 pass from their respective wales of origin with the warps w, 10 across said space and between the warps v, v of the next adjacent wale to the right.

The threads 1: and y are then respectively held in the positions indicated by the lines Ir and 43 while-the shuttle threads 8 make a predetermined number of turns around the pairs of warps o, v and w, w respectively. The setup of the droppers for position CC includes droppers yl, g2 and 113 between the stop 55a on the carriage 50 and the stop 19a on the barlt, and eliminates all of the droppers from between the stop 55a, on the carriage 50, and the stop l8a on the bar l8, thus, when the carriages 50 and 80 change position by shifting from the right to the left and vice versa, from Fig. 10 to Fig. 11, the shifting of the threads :1: and y as noted, is effected.

While the carriages 50 and 88 are holding the threads :1: and y in position C-C, as shown in Fig. 11, the jacquard mechanism is making the proper set up of droppers between the stop 852) on the carriage 89, the stop lab on the bar I8, and the stop l9!) on the bar IQ, for positioning the threads at and y for the weaving of that portion of the fabric adjacentthe line D-D (Fig;

15). This set up (Fig. 12) is the same as the set up (Fig. 9) for the area of the fabric BB (Fig. 15)

The set up for the area adjacent the line E-E is the same as that for the area A-A; the set up for F-F is the same as the set up for B-B and DD; the set up for GG is the same as A-A and E-E; the set up for H-I-I is the same as the set up for E-B, DD, and FF; and the set up II is the same as A-A, EE, and G-G.

The set up for J-J changes (see Fig. 13) the weft threads 3 move to position ly (Fig. 15) and the weft threads :1: move to position 49: (Fig. 15) with all droppers y l, g5, and g6 removed from between the stop in the carriage 8i] and the stop lSb on the thread bar l9; and with all three droppers x4, x5, and $8 in place between the stop 851) on the carriage 8E] and the stop [8b on the thread bar l8. After this set up is made as in Fig. 13, the carriages 5t and 89 reverse positions right to left and left to right respectively, as shown in Fig. 14, wherein the threads :1: and y are held in their extreme positions $4 and 1!! respectively (Fig. 15) while the shuttle threads 3, s make a predetermined number of wraps around the pairs of warp threads 22, 'u and w, w respectively.

At J-J it will be noted, the weft threads 0:

and 11 move outwardly, in opposite directions,

.from their respective wales of origin into the wales of the fabric next adjacent thereto, left and right, and then return to their wales of origin through area K--K, the *set up for which is the same as AA, E-E, GG and II, to area L-L wherein the weft threads x and y, occupy inside positions 21' and 3y respectively. The thread holding set up of the droppers for -L-L corresponds to the set up for area F-F, for example. l

The different set ups for the areas A-,A to 'Lr-L respectively are repeated in regular zsuccessi'on throughout the length of the fabric, in each adjacent pair of wales, and the interconnecting of the adjacent wales, as in the areas CC and J'J, in staggered relation, tie the various strand-forming wales of the fabric together to form the open meshes of the net.

Each of the droppers la, 2m, 3m, 4m, 5m, 6x, I y, 2y, 3y, 4y, By, and By is connected by a wire "ill to a harness cord 1!, said wire passing through an opening 72 formed in a laterally extending plate 13 secured to and forming part of the carriage 5!) or 88, as the case may be. A spring 14 confined between the under side of the plate 13 and a collar 15 on each wire lil at all times tends to force the respective droppers downwardly between the stops 55a or 85b on the carriages 59, 80 and the stops Iia, 18b, lQa, I91) on the thread controlling bars l8 and [9 or into a position of rest on top of the bar stops l8a, [8b, lEla, I912.

The droppers are raised out of operative position by a vertical pull on the harness cords H which are connected to needles of the jacquard mechanism of the loom, which, being of ordinary construction and operating in a conventional manner, have not been shown in the drawings of the present case.

The jacquard mechanism of the loom operates to raise the droppers xl, m2 and m3, of the group 55:10, and the droppers yl, g2, and 43, of the group 55y, when the carriage 5B is in its extreme posi tion to the left, as viewed in Figs. 8 to 14; and to raise the droppers x4, x5 and .726, of the group 85st, and 11 5 and g6 of group 85; when the carriage 80 is in its extreme position to the right, as viewed in said figures.

The cards of the jacquard mechanism are punched in a manner to cause the jacquard mechanism to hold all the droppers in elevated position, which are not required, until the carriages 50 and 8% shift to their other extreme positions respectively, and to cause the jacquard mechanism to lower into operative position, before such shifting of the carriages, only those of the droppers which are required.

I claim:

1. An attachment for a lace loom employing a plurality of longitudinally shiftable thread controlling bars, said attachment comprising means for shifting at least one of the bars to variable extents lengthwise thereof, said means including a carriage uniformly reciprocable parallel to said bars, and means for varying the longitudinal relationship between the carriage and the variable bar to effect variations in the positioning of the variable bar relative to the others of said bars by the uniform reciprocation of the carriage.

2. An attachment for a lace loom employing a plurality of longitudinally shiftable thread controlling bars, said attachment comprising means for shifting at least one of the bars to variable extents lengthwise thereof, said means including a carriage uniformly reciprocable parallel to said bars, and variable means mounted on the carriage-for reciprocation therewith to vary the longitudinal relationship between the carriage and the variable bar to efiect variations in ,the positioning' of the variable bar relative to the others of said bars by the uniform reciprocations of the carriage. j

3; An attachment for a lace loom employing a plurality of -longitudinall-y shiftable thread controlling bars, said attachment comprising means for shifting at least one of the bars to variable extents lengthwisethereof, said means including a carriage uniformly reciprocable parallel to said bars, and variable spacer means adapted to be interposed between said carriage and said variable bar for effecting variations in the positioning of the variable bar relative to the others of said bars by the uniform reciprocations of the carriage.

4. 'An attachment for a lace loom employinga plurality of longitudinally shiftable thread con;- trolling bars, said attachment comprising means for shifting at least oneof the bars to variable extents lengthwise thereof, including a carriage reciprocable parallel to said bars, an abutment on each variably shiftable bar, an abutment ,on said carriage, and a plurality of spacer elements mounted on said carriage and adapted to be selectively moved transversely of said bars into and out of position intermediate said abutments.

"5 An attachment for a lace loom employing a plurality of longitudinallyshiftable thread controlling bars, said attachment comprising means for shifting at least one of the bars to variable extends lengthwise thereof, including a carriage reciprocable parallel to said bars, an abutment on each variably shiftable bar, an abutment'on said carriage, a plurality of spacer elements mounted on said carriage and adapted to be selecti-vely moved transversely of said bars into and out of position intermediate said abutments, and means for moving. said carriagein onedirection relativeto said bars to spread said abutments apart for changing the number of spacers positioned therebetween.

6. An attachment for alace loom employing :a plurality of longitudinally .shiftable thread controlling bars, said attachment comprising means for shifting at' least one-of the bars to variable extents lengthwise thereof, including a carriage reciprocable parallel to said bars, an abutment on each variably shiftable bar, an abutment on said carriage, a plurality of spacer elements mounted onsaid carriage and adapted to be selectively moved transversely .of .said'bars into and out of position intermediate lsaid abutments, means for moving saidcarriage in one direction relative 'to said bars to spread said abutments apart for changing the number of spacers positioned there-between, and means for resiliently moving said barsin an opposite direction to close said abutments against the spacers interposed .therebetween.

7. .An attachment for a lace loom employing at least two longitudinallyishiftable .threadcontrolling bars, means for respectivelyrshifting said bars to difierently variable extents lengthwise thereof, .in'c'luding a pair of carriages reciprocable (parallel to said bars,a pair of abutments on-each variably shiftable bar, an abutment on each carriage, and a plurality of spacer elements mountedon each carriage and adaptedto lee-selectively moved transversely of said barsinto and out of position intermediate the abutments on the bars andcarriages respectively.

"8. An attachment for a .lace loom employing -2,341,952.. at leasttwo longitudinally shiftable thread controlling bars, said attachment comprising means for respectively shifting said bars to differently variable extents lengthwise thereof, including a -pair of carriages reciprocable parallel to'said bars, a pair of abutments spaced apart at different location on each variably shiftable bar,

an abutment on each carriage adapted to cooperate respectively with the relatively spaced abutments on the bars, a plurality of spacer elements mounted on 'each carriage and adapted to be selectively moved transversely of said bars into and out of position intermediate the abutments on the bars and carriages respectively, and means for moving said carriages in opposite directions relative to each other to spread the abutments on one of said carriages and at one location on said barsapart for changing the number of' spacers positioned therebetween.

9. An attachment for a'lace loom employing at least two longitudinallyshiftable thread controlling bars, said" attachment comprising means for respectively shifting said bars to diiierently variable extents lengthwise thereof, including a pair of carriages reciprocable parallel to said bars, a pair of abutments spaced apart at different locations on each variably shiftable bar, an abutment on each carriage adapted to cooperate respectively with the relatively spaced abutments on the bars, a plurality of spacer elements mounted on each carriage and adapted to be selectively moved transversely of said bars into and out of position intermediate the abutments on the bars and carriages respectively, means for moving said carriages in opposite directions relative to each other to spread the abutments on one of said carriages and at one location on said bars apart for changing the number of spacers positioned therebetween and close the abutment on the other carriage and the abutments at the other location on said bars against the number of spacers interposed therebetween during previous separation thereof.

10. An attachment for a lace loom employing at least two longitudinally shiftable thread controlling bars, said attachment comprising means for shifting said bars to differently variable extents lengthwise thereof, including a pair of carriages reciprocable parallel to said bars, a pair of abutments spaced apart at difierent locations on each variably shiftable bar, an abutment on each carriage adapted to cooperate respectively with the relatively spaced abutments on the bars, a plurality of spacer elements mounted on each carriage and adapted to be selectively moved transversely of said bars into and out of position intermediate the abutments on the bars and the abutments on the carriages, cam and follower means for moving said carriages in opposite directions relative to each other to spread said abutment on one of the carriages and the cooperating abutments on the bars apart for changing the number of spacers positioned therebetween, and resilient means for moving said bars in an opposite direction to close the abutments on the bars and carriages against the spacers interposed therebetween and to maintain contact between said cams and followers.

11. A lace loom comprising a plurality of horizontal longitudinally shiftable bars respectively controlling sets of vertically hanging threads, transversely reciprocable shuttles operable between adjacent hanging threads, means for shogging predetermined bars longitudinally to a con stant predetermined extent to change the hanging positions of'the'threads controlled thereby from'side to side of the paths traversed by said shuttles to wrap shuttle-carried threads around the constant-change threads, and means for shogging other predetermined bars to variable predetermined extents to change the hanging positions of the threads controlled thereby with respect to the paths traversed'by said shuttles and with respect to the hanging positions of said constant-change threads, the last said shogging means comprising a carriage reciprocable parallel to said bars,'and means for changing the Ion- -gitudina1 relationship between the carriage'and thevariably movable bars during said reciprocation of the'carriage. I v 12. A lace loom comprising a plurality of-horizontal longitudinally shiftable bars respectively controlling sets of vertically hanging threads, transversely reciprocable shuttles operable between adjacent hanging threads, means for shagging predetermined bars longitudinally to a constant predetermined extent to change the hanging positions of the threads controlled thereby from side to side of the aths traversed by said shuttles to Wrap shuttle-carried threads around the constant-change threads, and means for shogging other predetermined bars to variable predetermined extents to change the hanging positions of the threads controlled thereby with respect to the paths traversed by said shuttles and with respect to the hanging positions of said constant-change threads, the last said shogging means comprising an abutment on the variable bar, a carriage reciprocable parallel to said bars, an abutment on the carriage, and spacer elements mounted in the carriage and adapted to be interposed between said abutments.

13. A lace loom comprising a plurality of horizontal longitudinally shiftable bars respectively 49 controlling sets of vertically hanging threads,

transversey reciprocable shuttles operable between adjacent hanging threads, means for shogging predetermined bars longitudinally to a constant predetermined extent to change the hanging positions of the threads controlled thereby from side to side of the paths traversed by said shuttles to wrap shuttle-carried threads around the constant-change threads, and means for shogging other predetermined bars to variable predetermined. extents to change the hanging positions of the threads controlled thereby with respect to the paths traversed by said shuttles and with respect to the hanging positions of said constant-change threads, the last said shogging means comprising a pair of carriages, means for simultaneously reciprocating said carriages parallel to said bars in opposite directions respectively, abutments on said carriages, longitudinally spaced abutments on each variable bar, and spacer elements mounted on said carriages and adapted to be interposed between the abutments on the carriages and the abutments on the bars.

14. A lace loom comprising a plurality of horizontal longitudinally shiftable bars respectively controlling sets of vertically hanging threads, transversely reciprocable shuttles operable between adjacent hanging threads, means for shogging predetermined bars longitudinally to a constant predetermined extent to change the hanging positions of the threads controlled thereby from side to side of the paths traversed by said shuttles to wrap shuttle-carried threads around the constant-change threads, and means for shoggingother predetermined bars to variable 75 predetermined extents to change the hanging positions of the threads controlled-thereby with respect to the paths traversed by'said, shuttles and with respect to the hanging positions of said constant-change threads, the last said shogging means comprising a pair of carriages, means for simultaneously reciprocating said carriages parallel to said bars in opposite directions respectively, abutments on said carriages, longitudinally spaced abutments on each variable bar, spacer elements mounted on saidcarriages and adapted to. be interposed between the abutments on the carriages and the abutments on the bars, and

jacquard-controlled means for effecting vchanging of the number of interposed spacer elements effective in the carriages during each reciprocation'thereof.

15. A lace 100m comprising a pair of inside and a pair of outside horizontal longitudinally shiftable bars respectively controlling four sets of vertically hanging threads, transversely reciprocable shuttles operable between adjacent hanging threads, means for shogging the outside bars longitudinally in opposite directions simultaneously to a constant predetermined extent to change the hanging positions of the threads controlled thereby from side to side of the paths traversed by saidv shuttles to wrap shuttle-carried threads around the constant-change threads, and means .for' shagging the inside bars to variable predetermined'extents to change the hanging positions of the threads controlled thereby with respect-to the paths traversed by said shuttles and with respect to the hanging positions of said constant-change threads, the last. said means comprising a' pair of carriages, means for simultaneously reciprocating said carriages parallel to said bars in opposite directions respectively, abutments on said carriages, abutments spaced apart along each'of said inside bars, and a series of spacer elements on each carriage for each inside bar adapted to be selectively interposed between the abutments on the carriages and the abutments on saidinside bars.

ADAM F. SCHULER.

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