US2868232A

US2868232A - Jacquard mechanism for loom

Info

Publication number: US2868232A
Application number: US608389A
Authority: US
Inventors: Herbert V Foster; Johnston Douglas
Original assignee: Crompton and Knowles Corp
Current assignee: Crompton and Knowles Corp
Priority date: 1956-09-06
Filing date: 1956-09-06
Publication date: 1959-01-13
Anticipated expiration: 1976-01-13

Description

Jan- 13, 1959 H. v. FOSTER ETAL 2,868,232

JACQUARD MEcHANIsM FoR Loom ll/ 12" I3 '2 I l Pl Y l y", i El :l: i cn '6 inL 'i 'l l5 I4 76 "YR uf,"

|5.\ I4 l5 m J J 'm41 7' ria 7l 7m ear/VO l5 v es/ '4 75 ,25 "5 mvENToRs f '25 2 83 94 HERBERT v. FOSTER 6 DOUGLAS JOHNSTON ,o o o 52 Gf @i 1 $6/ 95 96 l l (2 s,

"5 ATTORNEY Jan. 13,1959 H. v. FOSTER ETAL 2,868,232

l JACQUARD MECHANISM FOR LOOM Filed sept. e, 195e 4 Sheets-Sheet 2 INVENTORS HERBERT V. FOSTER DOUGLAS JOHNSTON ATTORNEY Jan. 13, 1959 H. v. FOSTER ETAL 2,863,232

JACQUARD MECHANISM FOR LOOM Filed Sept. 6, 1956 4 Sheets-Sheet 3 INVENTORS HERBERT V. FOSTER DOUGLAS JOHNSTON ATTORNEY Jan. 13, 1959 H. v. FOSTER ErAL JACQUARD MECHANISM FCR LOOM 4 Sheets-Sheet 4 Filed Sept. 6, 1956 FIST INVENTORS HERBERT V. FOSTER DOUGLAS JOHNSTON @KMK/wf@ ATTORNEY nited States `Patent Oil-ice 2,868,232 Patented Jan. 13, 1959 2,868,232 JACQUARD MECHANISM FOR lLOOM Herbert V. Foster, Providence, and Douglas Johnston, West Barrington, R. I., `assignors to Crompton & Knowles Corporation, Worcester, Mass., a corpora- `.tion of Massachusetts Application September 6, 1956, Serial o. 608,389` 16 Claims. (Cl. 139-59) This invention relates to improvements in jacquard mechanisms and it is the general object of the invention zto provide means for preventing vibration of the uprights Vat the time in the cycle of the mechanism when they Aare intended to be engaged by their lifter knives.

The invention relates more particularly to double cylinder jacquard mechanisms provided with springless .needles between the cylinders for controlling the lateral in order to permit an upright to descend with a knift which is moving down without interference with aknife which is rising one set of knives is shifted laterally to permit the upright to continue its downward motion.

In such a jacquard it is desirable to be able to hold an" upright in raised position fortwo or more successive picks of the loom and in order to dothis there are provided additional hooks on the upright to engage hold-up plates which maintain the uprights in high position when called upon to do so during descent of a knife which previously lifted the upright.

The lateral` shifting of one of the setsvof knivescontributes to the vibration of the mechanism sufficiently to cause an upright which is in down position and is intended to be picked up by a rising knife to vibrate away from the knife at the instant the latter in its upward motion has reached a point where it should engage the hook. Urder these conditions a mispick will result since an upright which should be raised to lift its warp thread will remain down and the warp thread will be in the bottom shed instead of the top shed where it should be.

It is an important object of the present invention to provide means to act on the upright when it is in down position in such manner as to resist its tendency to vibrate away from the knife which should lift it. This result is accomplished by causing the upper end of the upright to move in a direction toward a knife which is at the beginning of its rising motion.

It is a further object of the invention to support the uprights when they are in down position on horizontally reciprocating support means which as set forth hereinafter effects a slight shifting of the lower end of the upright in such direction as tocause the hook at the upper end of the upright which is to be raised by a knife to be urged toward the latter. The support means as shown herein comprises a series of bars mounted on the frame which is shifted laterally in the jacquard mechanism to occupy rst one position and then another, depending upon which set of knives is at the beginning of an upward motion. v

The vertically reciprocating knives are mounted on griff frames associated with vertical guide bars or rods which slide through bearings ou the `frame of the jacquard mechanism. It is a further object of the invention to provide certain of these vertical guide rods with actuators to engage cams on the reciprocating frame for the support means. As one grit frame descends the actuator on a guide rod associated with the frame will engage a cam` at one end of the support means to shift it in one direction just before the knives reach their lowest position. On the next beat of the loom the other griff frame will be descending and an actuator on a guiderod associated with it will engage another cam at the other end of the support means and move the latter in a reverse direction.

It is a further object of the invention to provide improved means for mounting the griff frame which has the lateral shifting motion to the end that the frame will be properly supported by means of rolls or horizontal tracks and also horizontal bars which are slidable in bearings on a part ofthe mechanism which rises and falls in a straight line and is associated with certain of the previously-mentioned guide rods.

In order that the invention may be clearly understood Fig. 1 is a front elevation of a jacquard mechanism j. rnade according to the present invention,

Fig. 2' is an enlarged horizontal section on line 2-2, Fig. 1, j

` Figs. 3 and 4 vertical sections on lines 3 3 `and 4-4, respectively, Fig. 2,

Fig. 5 is a detail vertical section on line 5--5, Fig. 4, Fig; 6 is a vertical section on line 6-6, Fig. 5,

Fig. 7 is an enlarged horizontal section on line 7`7,

Fig. `1, l

Figs." 8 and 9 are enlarged vertical sections, parts broken away, on lines 8-8 and 9 9, respectively, Fig. 7,

10 is a fragmentary enlarged vertical section on line 10-10, Fig. 7, v

Fig. 1,1 is a detail perspective View showing part of the stationary grid which guides the uprights,

Fig. l2 is a detail perspective View showing parts of the shiftable support means for the prights which are in down position,

Fig. 13 is a front view of one of the warp lifting uprights, and

Figs. 14 and 15 are diagrammatic views4 showing the operation of the invention.

Referring particularly to Figs. 1 and 2, the jacquard mechanism has a generally rectangular frame F including front and back

Vertical plates

1 and 2 respectively each having top, intermediate and

bottom cross bars

3, 4 and 5 respectively. The plates are held together by any approved means including, for instance, horizontal tie rods 6. Right and lefthand cylinder mechanisms CR and CL respectively connected by rod 3 to move in unison are supported on stands 9 Xed to the frame for horizontal motion caused by usual means: not shown. Between the cylinders is a bank of needles N slidable horizontally in opposite directions, depending upon which cylinder is moving in toward them and whether they register with a hole or blank space in the card of the pattern 10 in reading position. The needles are springless and normally occupy a neutral mid-position from which they can be moved either to the right or left. Cylinder CR will move in to indicate the desired warp shed on one pick or beat of the loom and then will move out as cylinder CL moves in for the next pick. The jacquard is supported on a rail organtry G over the loom (not shown).

The needles position warp lifting uprights generally indicated at 11, see Fig. 13, each having at its upper end i oppositely pointing lifting

hooks

12 and 13 fixed to each Qi other and lower holding hoo-ks llt and rigid with re,- spect to each other. Each upright has a shank 16 between the pairs of hooks for engagement with a needle.

Further details of the uprights will be described herein,-`

after. l n The lifter hooks are for engagementpwith two1 sets or4 lifter knives or griffe. The knives ld of one set are se,-

cured to a framel ljwhich is raised andloweredlby a,

to be described. Each knife lr6 andthe knife 2li to the right of it may be considered as aV pair of oppositely vertically reciprocating grit-is orwknivelsl between which is located a row of uprights lill. The other set of knives 2l are reciprocated verti'callyninl directions'opposite to the movements of knives llo', and one set will rise on one pick as the other descends, and will 'then move down on the next pick as therot'her set'rises. I i

Except as noted hereinafterV the matter thus tar described may be `ofusual construction.

One of the eatureso-f the invention is 4the structure and operating means by which one of the sets of lifter knives is shifted laterally as it'risesl and falls. As shown herein this feature relates to the knives 2li and their mounting. The description will be given with particular reference to the matter near` the front plate 1' shown in Figs. l and 4 and at the bottom of Fig. 2, butwith'the understanding that much of this structure is duplicated near the back plate 2. Similar parts bear the same reference characters. t c

Y The fingers 22 are integral at their lower ends with two horizontal bars 25 and '26 the adjacent `ends of which are screwed toa tie plate ,27. vrthe right-hand end of bar 25 is secured to a support "Zd and in similar manner the left-hand end of bar 2d is secured to a support'` Z9. These supports have' hubs 30 secured by set'` screws 3i and a horizontal elongated rod 32. This rod is s'lidable inl bearings' 33' which are bolted 'at 34 to yan elongated horizontal lifter member 35 having hubs 36 inw ich are secured upright guide rods 37 which slide in

lbearings

38 and 39 on the frame cross bars Sand 4 respectively. An actuator rod itl pivotally connected to member 3S is raised and lowered by means (not shown) to cause up and down motion of knives 2l. The ngers 22 and bars 25 and 26 may be considered to he a griff 'frame for knives 21.

Supports

28 and 29 each has a carrying rolier 45 journaled on a sleeve 4M held tothe support by stud 47( Each roller is supported by a flat track or run @d which is secured for vertical adjustment vwith respect to member 35, see Figs. 3 and 5. Each roller has a limited rolling motion on its run d8 first in `one direction and then in the other during a complete vertical movement of the knives 21.

A stationary cam platetl is secured for vertical adjustment to cross bars and'd by screws 5l, see Figs. l and 3, and has a generallyvertical slot '52 the upper and lower ends 53 and 54 respectively of which are aligned vertically and the intermediate part 55 of which is odset to the right, Fig. 3, and may have a straight vertical dwell 56. A shifting roller 57' fits into slot 512 and is rotatable on a stud 553 secured to the lower extension 59 of the tie plate 27, see Fig. 4. v

As rod dit rises from the low position shown in Fig. 1 the roller 57 first moves up in bottom '5d of slot S2 and then enters the offset 55 and is moved to the right by the cam, thereby shifting the knives y2l and parts xed, with to move the rod 32 and knives to the left, and as rod dit approaches the end of its upward movement the` roller i ascenso A occupied when in their low position.

. 10 The knives` 57 enters the upper part 53 of slot 52 and the knives are back to their normal position over the positions they The reason for shifting to knives 2.1 as described is to enable an upright which is descending with a knife 16 to have its hook It?. to pass the corresponding knife 21 without being engaged by it.

The open shed feature of the jacquard is shown in Figs. l, 5, 6, 14 and l5. The fixed stlucture of thc jacquard frame includes right and leftfhand upright channel irons SES and 6d respectively, see Fig. 4, to the upper ends of' which are secured horizontal channel irons 67. The channel irons 67 extend from right to left in the jacquard, one of them being secured to the forward

upright channels

65 and 66 shown in Fig. 2. The other vchannel iron d'7 is similarly mounted on rear

upright channels

65 and 66.

Each channelr iron 67 has secured to the upper part 'thereof a vertical flange ed and these two anges support rods 69` which pass through tubes '7d extending between thelanges. Welded or otherwise secured to the opposite sides of each tube are parallel hold-up plates '7l the upper -ends of which are similarly secured to tubes 72 through which .pass rods i3 which project through and are supported by side plates'f, The end hold-up plates 71a are extended below their lower tubes 'itl to engage compression spring positioned yielding stops 75, see Fig. 6. Each side plate '74 is adapted for engagement at its opposite ends with placing screws 7d. and '77, see Figs. l and .6, on cylinders CR and CL respectively. Rods 69 serve as pivots for'y the hold-up plates and side plates 7 and. thev latter are moved lengthwise by the screws 76 and 77k to rock the holdup plates iirst in onel direction and then one pick later .in the opposite direction for a purpose to be described.

`nach uprightlll, already partly described, has the singte wire 16 extended below/hook l5 as at'tl.: A second much ,shoiter'wire 31 extends below'hook M and short distance 4above it. The lower part of' the upright is made ot a `bent U-shaped wire b2 the. lower end of which is rounded ,at d?, and the parallel sides 34 of which terminate at their upper ends'in the hooks "ad and i5. lust below the hooks there are four wire parts which are brazed together substantially in a plane in which the hooks Mand 15, and `also hoo-ks l2 and i3, lie. The upper end of wire 16 has Ybrazedto it over wire 'ci a wire S5 the upper end ot which is formed with the hook l2.

The mechanism for arresting vibration of the uprights during operation of the jacquard is shown in Figs. l, 4, and 7-12. Fixed to the frame ,of the jacquard are front and back

transverse angle irons

86 and 87 respectively having horizontal top flanges S8. A slidable horizontal rectangular .frame generally indicated at 90 is mounted on flanges 38 and comprises inverted cross channel members 91 resting on flanges S8 and back and forth extending end members 92 bolted at 93 to channels 91. The inner vertical .channel flanges 94 have their lower edges rformed with downwardly Vopening notches or slots 95. Supporting rods or bars 96 Ventend Vbetween the channels and have their ends resting on flanges 88 and fitted through the notches 95, seefFigs. 8 and 9. The outer anges of the channels near their ends are guided by the

channels

65 and 66 of the jacquard frame. Guides 97 secured to the anges S8 prevent upward as well as lateral undesired motion of the channel members. Adjustable stop screws 9S in small stationary stands limit lateral motion ofthe frame 90.

The meansfor shifting the frame 9d includes cams ltl and actuators generally indicated at 191 therefor. Each cam has a foot llGZ screwed at 103 to the adjacent channel member 91. Each foot has a lateral arm 104at the end of which is the corresponding cam. The cams are of two shapes, those at the right in Fig. 1 having inclined faces 105 .which slant up and to the left,rwhile they cams at the left haver faces We whichV slant upand tof the right.

The actuators for the cams are at the bottom of certain of the vertical guide rods which slide in cross bars 3 and 4.` The actuator 101 for the cam face 105 is formed with a hub 110 fastened by set screws 111 to the lower end of the right-hand guide rod 37 as viewed in Fig. 1. Upstanding from the hub is an arm 112 in which is 'secured a stud 113 on which is mounted a roll 114 for engagement with cam face 105. Screws 111 afford vertical adjustment for the actuator on rod 37. Theactuators for cam face 106 are similar to those on rods 37 except that they are secured to the bottoms of the left-hand guide rods 19 as viewed in Fig. 1.

The rods 96 are arranged in pairs, see Fig. 10, close enough together to support between them the lower rounded end of an upright in down position. Any connection, such as ccrdj115, for the warp (not shown) which an upright controls passes down between the corresponding pair of rods 96.

Above the frame 90 but below the

hooks

14 and 15 when the latter are in their low position is a grid structure generally indicated at 120 shown particularly in Fig. 11 for guiding and positioning the lower ends of the uprights 11. Angle irons 120 at the front and back of the jacquard frame secured to the latter support inverted channel irons 121 secured in position by screws 122 one of which is shown in Fig. 11. The inner vertical flange 123 of each channel iron has downwardly opening notches or slots 124 therein to receive back and forth extending rods 125 the ends of which rest on the

angle irons

1,20. The rods 125 are spaced farther apart than the rods 96 in their pairs in order to permit free vertical motion of the uprights 11. When an upright is in its highest position its lower end will extend below the rods 125. Cross wires 130 under rods 125 pass through and are supported by vertical plates 131 stationary on the jacquard frame. End plates 132 one of which is shown in Fig. 11 are secured at 133 to channel

irons

65 and 66 and align `with the wires 130 to hold them in place. The rods 125 and Wires 130 in effect form a grid which confines each upright 11 to a very small space and Ikeeps it in a position in which the plane of the

hooks

12, 13, 14 and 15 is substantially at right angles to the

knives

16 and 21.

In the operation of the jacquard the cylinder CR will move in toward the needles to read the harness pattern for one pick of the loom and then cylinder CL will do likewise for the next pick, the cylinders alternating in their control of the needles. After a cylinder has moved all the way in one or the other of the sets of knives will start up from its low position and the other set will start down. The set of knives 21, if rising, will be shifted to the right, Fig. 1, and full line position, Fig. 15, before they can engage a hook descending with the other set of knives and will then be shifted back before reaching their top po-sitions. W'hen the set of knives 21 descend they will have similar shifting movements to avoid striking any hooks which may be rising with the other set of knives. The dotted line positions of the knives shown in Fig. 15 istheir position one pick after the position in Fig. 14.

This shifting is one of the causes of vibration of the upper ends of the uprights which are in low position and resting on the bars 96, such as upright 11a, Fig. 14.A As knife 21a, Fig. 14, descends the bars 96 will be moved to the left by engagement of actuator roll 114 with cam face S the effect of which is to move the top of the upright tothe right to restrain its vibration. Any upright which is down and has its hook 12 over a knife, such a knife 21a, will not vibrate away from the knife. A similar condition exists when a hook 13 is over a knife 16' which is in down position. In Fig. 14 upright 11b is also down on bars 96 but cylinder CR has moved it to the left clear o-f its knife 21b.

l `vl/hen upright 11b is as shown in Fig. 14 its hook 12 essence is actually fartherfrom knife 2lb than would be the case. if the lower end of the upright had otbeen moved to the left. The upright 11b tw'o points along its length held fixed, one point at its needle and the other at the rods 125. Because of this fact, and the resilience of part 16, movement of the bottom of the upright to the left will produce a motion of hook 12 in the Same direction so that this hook could have a more than ordinary vibration without risk that it would be over knife 2lb when the latter moved up. A similar condition exists when bars 96 move to the right, that is, the tops of the uprights` in down position will have an additional movement away from their knives 16 beyond that caused by the needle.. The bars 96 therefore provide an additional movement for the

hooks

12 and 13 relative to the

knives

16 and 21,. whether the hooks are to remain in the path of, or be moved out of the path, of their knives. 4 j

When `the set of knives 16' approaches the end of their down motion the actuator roll engages cam face 106 and shifts the bars 96 to the right as shown in dotted lines, Fig. 15. At this time the cylinder CL is in its in position and the hooks 13 of the uprights in down position are moved toward the knives 16.

The operation of the open shed feature is shown diagrammatically in Figs. 14 and l5. When cylinder CR moves in, its placing screw 76 moves plate 74 to the left to rock the left-hand plates 71 into vertical alignment with the normal position of hold-up hooks 14. If an upright, as 11e in Fig. 14, is to remain up its needle will not be pushed by cylinder CR and the associated hook 14 will remain over the corresponding plate 71 to keep the upright in high position as knives 16' descend. Upright 11d`is shown in Fig. 14 deflected to the left by cylinderV CR so that its hook 14 is out of vertical alignment with its plate 71 and can descend as knives 16 move down.;

When the cylinder CL moves in, its placing screw 77 will push plate 74 to the right to rock the right-hand plates 71, Fig. 15, into vertical alignment with the normal position of hooks 15. The holding or nonholding relation with the hooks 15 will then be similar to that described for hooks 14.

From the foregoing it will be seen that the invention sets forth simple means by which vibration of the upper hooked ends o-f the uprights in a jacquard may bey resisted or prevented when the upright is in down posi` tion and might tend to vibrate out of the path of a ris` ing knife which should engage it. It will also be seen that when an upright is to be moved out of the path of a knife its upper end will be given an additional motion away from` the knife beyond that due solely to motion of the associated needle. These results are accomplished by the slidable support means for the lower ends of theuprights and the actuators which move vertically with the knives to shift the support means rst in one directio-n on one beat of the loom and then in the opposite direction on the next beat. Also, the invention sets forth an improved upright made of wire parts the lower one of which is U-shaped and has extending into it and secured thereto the relatively long single flexible wire 16, the arrangement being suchthat the severai wires at the upper end of the U-shaped part have a breadth considerably in excess of its thickness. Furthermore, one of the sets of knives is mounted for lateral shifting while being supported by carrying rollers which rest on and are supported by the lifter member 35. This latter feature is further associated with the horizontal rod 32 slidable on the lifter member in a direction transverse of the knives and effective to prevent endwise movement of the knives as they are shifted.

Having now particularly described and ascertained the nature of the invention and in 4what manner the same is to be performed, what is claimed is:

l. In ya double cylinder jacquard mechanism having oppositely vertically reciprocating lifter knives, an upright movable upwardly between the paths of the knives from a down position thereof and having on the upper end thereof a pair of oppositely'pointing hooks rigid with each other, one .hook for andnormally in the path of each knife when the latter begins an upward movement, a hook when over its knife having a tendency to vibrate out of the path of .its knife when the latter is inlow position, and means acting in timed relation with the knives to exert a force on the upright when the latter is in down position to resist said tendency.

2. The jacquard mechanism set forth-in claim 1 wherein said means includes horizontally movable supports for the uprights in down position and actuator means to move the supportsalternately'first in one direction as one of the knives moves down and then in the opposite direction as the other knife moves down.

3. The jacquard mechanism set forth in claim 1 wherein said means includes horizontally reciprocable support means for the upright when the latter is in down position, cams on said support means, and an Iactuator for each knife moving vertically in the same direction as its knife moves simultaneously with the latter, said actuators effective to actu'ate the cams alternately to reciprocate the support means.

4. The jacquard mechanism set forth in claim 1 wherein the mechanism includes a fixed frame and the support means is supported by and slidable horizontally on said frame.

5. The jacquard mechanism set forth in claim l wherein each knife is mounted on a vertically reciprocable grit frame and the means includes an actuator moving vertically with each griff frame to engage the support means and move it as the griff frame approaches its low position.

6. The jacquard'mechanism set forth in claim 1 wherein said means includes fixed guides on opposite sides of the upright and a movable support below the guides for the upright when the latter .is in down position moving horizontally in oppositedirections as the knives reciprocate and cooperating withthe guides `to resist said tendency when each knife is in down position.

7. Thejacquard mechanism set forth in claim 6 wherein said guides are far enough above the support to re main on opposite sides of the upright when the latter is raised by a knife to its high position in `the jacquard.

8. lnl a double cylinder jacquard mechanism having oppositely vertically reciprocating lifter knives, an upright between the paths of the knives having on the upper end thereof a pair o-f oppositely `pointing hooks rigid with each other, one hook for and normally in the path of each knife when the latter begins an upward movement, a springless needle between the cylinders to move the upright to move a hook out of the path of its knife when the latter is down, provided the pattern requires that .the hook be moved, the hook otherwise remaining in said path but tending to vibrate out of Said path, and means acting in timed relation with the knives to exert a force on the upright when the. latter is in down position tending to prevent vibration on theupright `when either hook is in the path of a knife when the latter is at the beginning of an upward motion.

9. ln a. double cylinder jacquard mechanism having oppositely vertically reciprocating lifter knives, an upright between the paths of said knives having on the upper end thereof la pair of oppositely pointing hooks rigid with each other, one hook for and normally in the path of each knife` when the latter begins an upward movement, a rigid stationary guide on each side of the upright, support means for the lower end of the upright on which the latter rests when in down position, the upright when resting on `the support means tending to vibrate to move a hook over a knife out of the path of the latter, means mounting the support means for vhorizontal reciprocatingmotions in the direction in which said hooks point, and means .acting in timed relation with the knives moving the support means in one direction when the other knife approaches low position, said support means due to motion thereof cooperating with said guides to urge Vtheupright in .the direction of the knife in down positionlto resist thetendency of the hook over the knife to vibrate out of the path of the knife.

l0. rl`he mechanism set forth in claim 9 wherein the guides are below the pair of hooks and the support means is below the guides and a needle for controlling the position of the uprightis intermediate the hooks and guides, the needle when moving the upright in la direction to move a hook in down position away from its knife in lowposition cooperating with the support means when the latter moves to give 'the hook an additional movement away from `the knife.

11. In a double cylinder jacquard mechanism having oppositely vertically reciprocating lifter knives, an upright between the paths of said knives having on the upper end thereof a ,pair of ,oppositely pointing hooks rigid with eachother, one hook for and normally in the path of each knife when the latter begins an upward movement, a horizontal needle for the upright between the two cylinders to be moved in one direction by a 'blank space on a card on .one of the cylinders to move one of the hooks from a position over one of said knives to a position out of the path of said one knife and moved in the opposite direction by-a blank space on a card on the other cylinder to move the other of the hooks from a position over the other knife to a position out of the path of said other knife, a rigid stationary guide on each side of the upright, support means below the stationary guides for the lower end of the upright on which the latter rests when in down position, means mounting the support means for horizontal reciprocating motions in the direction ofthe length of the needle, and means acting in timed 'relation with the knives moving the support means in said one direction when said one knife approaches low position and in said opposite direction when the other knife approaches low position, said support means due tomotion thereof cooperating with said guides to urge the hook corresponding to whichever knife is in low position over the knife, provided the needle has not moved the h-ook away'from the knife.

12. En an upright for a jacquard mechanism operating with an upright controlling needle and having a grid for the upright, the upright comprising two lifter hooks at the upper end thereof rigid with each other and pointing in opposite directions, a U-shaped part at the lower end of the upright formed of wire the upper ends of which are bent to form oppositely pointing holding hooks rigid with respect to and opposite each other, said lifter and holder hooks lying in a common vertical plane, and a single strand of wire integral with one of the lifter hooks and having the lower end thereof extending into the U-shaped part rigid with the latter and lying in said plane, said single wire being resilient for engagement with the needle and the U-shaped part and the lower end of the single wire being for reception by the grid.

13. The upright set forth in claim 12 wherein a straight piece of wire in said plane extends into said U-shaped part and is secured to the lower end of the single wire and to one of said holding hooks so that the part of the upright immediately below the holding hooks is formed by four pieces of wire in said plane and fixed relatively to each other.

14. The upright set forth in claim 13 wherein the other of said lifter hooks is integral with a wire extending along and secured to the upper part of said single wire over said straight piece of wire.

l5. in a jacquard mechanism having a frame, guide rods slidable vertically in the frame, a lifter member secured to and moving vertically with the rods, an actuator rod connected to the member to raise and lower it means on the member providing horizontal flat tracks, carrying rollers supported by and r-ollable alongsaid tracks, a set of lifter knives deriving support from said rollers, a cam fixed with respect to the frame of the jacquard, and a shifting roller moving with said set of knives cooperating with the cam as` the lifter member rises to shift the knives laterally in one direction and then shift the knives back in the `opposite direction as the member continues to rise, the tracks by their support of the carrying rollers supporting the knives as the latter shift.

16. The jacquard mechanism set Iforth in claim 1S wherein the lifter member has bearings thereon horizontally aligned in a direction transverse of the length of the knives and a rod slidable in said bearings is Xed With respect to the knives and prevents endwise movement of the knives relative to the frame when the knivesshift due to the fact that the member is fixed to the guide rods which are slidable vertically -on the frame.

References Cited in the file of this patent UNITED STATES PATENTS 537,105 Briggs et al. Apr. 9, 1895 753,547 Cochran Mar. 1, 1904 900,948 Perrin Oct. 13, 1908 2,207,093 Foster July 9, 1940 2,219,771 Foster Oct. 29, 1940