US1164117A - Power-loom for weaving oriental and other knot-stitch carpets. - Google Patents

Description

C. & A. RENARD. POWER LOOM FOR WEAVING ORIENTAL AND OTHER KNOT STITCH CARPETS. APPLICATION FILED FEB. 2. 1911.

1 ,164,] 17, Patented Dec. 14, 1915.

I/VVENTORS WITNESSES:

cnLuMBIA PLANOORAPH CO..WASHINGTON, D c.

C. 61 A. RENARD.

POWER LOOM FOR WEAVING ORIENTAL AND OTHER KNOT STITCH CARPETS. APPLICATION FILED FEB. 2. 1911.

Fig? 4.

Patented Dec. 14, 1915.

4 SHEETS-SHEET 2.

' COLUMBIA PLANOORAPII CO.,WASHINGTON. D. C.

C. & A. RENARD. POWERLOOM FOR WEAVING ORIENTAL AND 0111111 KNOT STITCH CARPETS. APPLICATION FILED FEB. 2. 19H.

1 1 64, 1 1 7. Patented Dec. 14, 1915.

4 SHEETS-SHEET 3.

COLUMBIA PLANOGRAPH CO..WA5HINOTON. D.c.

C. & A. RENARD.

APPLICATION FILED FEB. 2.491].

Patent-ed Dec. 14, 1915.

4 SHEETS-SHEET 4.

w mil|llllllll|lllllnull l l l llllllll I I IJHI w I III!- WHI I I HHHI I IH IHHHHHHHHHHHH IIl III: III I Ill qllllll Illl Illll lllllllll lllllllllllllllm-vlillll POWER LOOM FOR WEAVING ORIENTAL AND OTHER KNOT STITCH CARPETS. 1,164,]. 17.

t at is and orrrc.

CHARLES RENARD AND ALBERT RENARD, 0F NONANCOURT, FRANCE.

Specification of Letters Patent. Patented D 14, 1g15 Application filed February 2, 1911. Serial No. 606,143.

(0 aZZ whom itmay concern:

Be 1t known that we, CHARLES Riemann and ALBERT RENARD, cltizens of the Republic of France, residing in Nonancourt, Eure, A

France, have invented certain new and useful Improvements in Power-Looms for WVeaving Oriental and other Knot-Stitch Carpets, of which the following is a specification. r a

7 Our invention relates to power looms for making oriental, Persian, wound and other knot-stitch carpets.

The improvements do not in any way alter the. principles and processes described inthe specifications 'of United States Patents No. 894,287 of July 28, 1908, and No. 969,565 of September 6, 1910, and which are as follows: The distribution of the pile thread by a distributer having its blades or strips extending to the center of distribution; by the nippers which seize the pile thread, draw it and keep itin tension; by the action of the two warp threads which are lifted together or separately, separated onefrom the other,

raised up to the under side of the pile thread in tension at first by the divider and afterward by the looping or knotting tool as soon as they are free of the divider; by the intervention of the looping tool which unites the two warp threads with the pile thread, seizes the latter, drawsi-t along, loops it and looks it; by the cutting of the pile thread, by the suspension of the knotters and their double oscillation, and by the automatic "locking of the stitch. The result of this combination of operations is, that at a given moment for the execution of a stitch there are united at the distribution center the distributer, the distributing nipper, the pile thread, the cutters, the two warp threads 'and the nippers of the looplng tool, which union of parts constitutes an encumbrance shown in the drawings of the said specification No.'89t,287 of 1906, Otherwise there is no other objection but the restriction of the number of knotters which can be placed equality. of length of each thread of the knotted stitch, and a regularity of its lockmg and also to prevent the failure of stitches in the carpet; which conditions can only be realized so far as in each operation of distribution, nipping, cutting and knotting, the ends of the pile threads are firmly held and also directed and placed in a precise manner.

In theiaccompanying drawings which illus trate our improvements, Figure 1 is 21. ion

lar to Fig. 2, of another mechanism em bodying the invention; Figs. 5 and 5 are respectively a face view and a side view of a frame for carrying a pair of grippers and their operating mechanism; Fig. 6 is a side View of thefcutting device of Fig. 2; Fig. 7 shows in side view other shapes of cutting blades; Fig. 8 shows in central longitudinal sections other shapes of tubes and hooks than those of Fig. 1; Figs. 9 and 10 are respectively a front and a side viewof a pile thread distributing device; Figs. 11 and 12 are similar views of another construe tion thereof; Figs. 13 and 1%- are similar views of still another construction thereof; Fig. 15 is a face View and Fig. 16 an end view of another style of gripper, in open po- 19 and 19 are respectively face view and a transverse section of another style of gripper; Figs. 20 and 21 are respectively a. face view and an edge view of still another style of gripper. i

Fig. 1 shows a section taken through its axis ofone of the modified tubes 1, 2, of the looping device; It contains no inner tube and it is closed at 1 by a plug 3 in which is fixed the guide 4: and the end of which forms a sheath 5 in which is inserted thehook 6, the stem of thishook extending from 6 to 7. At the same time this arrangement forms the shoulder 8 designed to hold the two warp threads in the knotting operation At the other end, at 2, there enters with slightfriction a tube 9, 10 on which are two opposed pins 14, 1 1 which enter slots 15, 15 made to receive them so that the tube 1, 2 can carry along the tube 9, 10 in its rotary movement but leaves it free to perform its head'of the bolt and the side of the tube.

I backward and forward movements in the direction of the length of the slots, whlch correspond to the opening and closing of the gripper formed in this system by the-hook 6 and the sheath 5. To this end the stem of the hook 6, 7 passes into the tube 1, 2 and through the tube 9, 10 and is fixed to the latter at 11 by the bolt (shown at 12 removed from its apertures) by passing into the hole 13 made flush inside with the head of the bolt in order that on tightening thelatter the stem. may be firmly held between the To place the bolt 12 a ring isbrazed upon the tube near its end 10. 'It is slotted, as shown in the drawing thus allowing of obtaining a firm locking of the stem of the hookbetween the head of the bolt and the inner side of the tube. Any holding means can be used which provides for firmness 1n.

suitable means. Compressed springs 20,20 are arranged between the parts 21, 22 and 23, 24, which constitute what may be called a small carriage. The passing of the ends of the hook-stems '6, 7 through the side 23, 24 lnsures their direct1on and at the same time that of the tube 9, 10,9, 10 which are guided at their other end by entering the tubes at 2, 2, and are held in bearings 25,25 in-the cross bar 21, 22; the upper ends of the springs 20 bearing against suitable washers interposed on the under sides of the bearings 25. V

Fig. 3 is a side view of the looping device the drawing of which has been limited to the members there shown in order to render. the

description more clear. On the two projections 46'and 49 .ofeach side of the frame 45, 46, 47, 48, 49, 50 there is fixed by screws a plate 52, 52 of a width equal to the thickness of the sides of the frame, a free space being left between said plates and the sides of-the frame (in height) and between the projections 46 and 49 (in length) in which slides the large carriage 53, 55;.the sides of this large carriage havmg recesses in which he the sides 22, 24 of the small carrlage. The two sides of the large carriage areconnected together by the piece forming the bearing 17, 17 by means of the two pins 56, 56 which are riveted therein; at the other end the small shaft 57, 57 also forms a tiebar and its ends are riveted in the two sides of the carriage; this carriage bears upon the projections 49 of the framesunder the M tion of the spring fixed at one end to the frame at 51 and at the other end to the car- 'riage by the pin 58 whichcan move backward and forward in the recess at this place in the plate 52, 52;and allow the free sliding movement of the large carriage from the movement it is only necessary to overcome the force of the sprlng 58, 51 111 the contrary dlrection.

Figs. 2 and 3 showthe frames of the looping device connected by th'e bai's 59, 59, 60,

50., 61,61 by slotted and screwed parts in order to form a strongframe These figures also show the small carriage 2 1, 22, 23, 24 connected to a be'nt rod, attached by a pin 26 to the small carriage and by a pin 27 to a piece 41, 41, rocking upon the shaft 57, 57 which rocking movement can belimited by a screw 28 which for its regulation abuts against a projection 30 fixed on the inner side of the left hand frame of the looping device; finally at 29 1t has-a pro ection which serves as a stop to the rockmg movement as will be hereinafter explained. 14.

red 31 32 coImectsthe-small carria e b Y means ofthe pin. 38 to the pinion 89cm. which is fixed thepin 40. The pinion 15; held" by a screw forming ashaftscrewedi in the lower bar 61, 61 of the frame. The pinlon is actuated by a rack 41-2, 42 which receives itsto and fro movement'from a cam and lever upon the sideof theloom so that this movement is transmitted to the pinion, to

the rod, and, finally to the small carriage which, actuating the hook 6, 7, causes the opening and closing of the grippers 5, 6. After thegrippers nave gripped theyarn they are pulled through the warp in the manner usual in this class of machines by pulling back the gripper-carrymg frames.

In this movement the: small carriage 22, 24-

bears against the top of its recess in the projection 49 to the projection 46. For this large carriage 53, 55 and the latter yields as far as may be necessary; being always pulled backward by its spring 51, 58; WVe

would add that in vFig. 2 the tubes of the looping deviceare represented in parallel directions; however, the operations. above described are not interfered with if the tubes are convergent, and they can be thus arranged. i Finally in Fig' 8, several examples of different kinds of hooks and tubes forming the sheaths show that their possiblearrangementsfand combinationsare'many.

Different mechanical means. from those hereinbefore described may coiiperate to the same ends. Thus for example, Fig. 4 shows another system for holding the small carrlage' for closing the grlppers and which also effects their automatic opening by the drawing of the knot, the same bar, tubes, hooks,pinions, springs 58, 51 are employed;

and even the same small carriage except on the side 23, 24 wherein is fixed the pivot 67;

and the samelarge carriage, but upon the cross bar which unites its two sides 55, 55 is.

fixed the pivot 69. These two pivot'sb? and 69' as well as a pivot '70 fixed uponthe plate 52, 52, are perpendicular to the planes of ti e carriages. Upon the pivot 69 rocks a lever (56, 68 connected to the small carriage by the connecting rod 68, 67. It is actuated by the spring 66.; 75; upon the pivot 70 rocks a lever 71, 73 the play of which is limited by coming against the stud 51 to which the spring 51, 58 is attached. It is actuated by the sirin 74'. The Jart formin a notcn is made on the lever arm (56,.and forms a. pro ection at the. top; the lever arm 73,

forms a projection below so that these levers can rock one above the other; but when the pro ection 2- st rllzes against the pro]ection 73 there is a blochin of the lever which brin s about that of the small carria e corresponding to the closing of the grippers.

. sliding action of the large carriage at the locking of the stitch the stop 72 will slide upon the projection 73 and will be disen gaged. therefrom; the plate 6%, Gtmeanwhile accomplishing its return movement will have disengaged the stop and stretched the spring 66, '75 so that the opening of the grippers does not meet with any impediment and is effect-ed suddenly under the action of the spring 66, 75. In cases where (by reason of the failure of a stitch) the sliding of the'carria-ge shall not take place, the stop 75. acting upon the arm 71 of the lever 71, 73 will cause it'to rock upon the pivot and will disengage the projection '73 thus. eiiecting. the opening of the grippers. V

In the two mechanisms for opening and closing the. gripperswhich have just been explained no member extends beyond the frames. of the looping devices and their number can thus be increased. On the other hand the side frames of the looping devices are only occupied for half of their idth and become common from one looping device to the other without any loss of space,

and thus allow the largest possible number of looping devices in the width of the loom. It should be understood thattheir number varies according to their proper dimensions which are in relation to the size of the materials enteringinto the manufacture of the knot-stitch carpet. 7 u

YVe will now describe the method of suspending the knotters: InFig. 5 isshown a piece 62,89, 63 forming. an open frame and receiving the bar 60 in a tube 89, the bars 59 and 61 being fixed by screwsrespectively at 63. The suspension is elfected in the middle. of the frame by the tube 89 forming a rock shaft, the piece 62 63 supporting at once the axis and the bars of the looping devices of the loom. A like arrangement is provided at each end of the bars connecting all the looping tools of the same 100m. The means for cutting the pile thread consists of cutters of suitable shape arranged to cut the pile thread to the required length between the gripper and the distributer at the moment following the seizure of the pile thread by the grippers of the looping device. This cutting means is arranged as shown in top view near the looping tool at Fig. 2 and in side view and detached from the looping tool at Fig. 6. It consists of a lever 81, 79, rocking upon its center or pivot fixed to the frame L5 receiving its to and fro movement at 81 through the plate shown in dotted lines which is itself operated a lever and cam upon the side of the loom, the said plate actuating the cutters of all the looping devices of the loom at the same time. This to and fro movement is transmitted by the pin 82 to which is connected the eye 83 of the bar 83, 7 8 on whichis fixed the cutting blade 77, the latter being held upon the bar by any suitable method of fixing. The

whole can be easily dismounted in order to allow a prompt" replacement of a blade or its prompt sharpening. A sheath 76 mounted at upon the frame holds the blade 77 between its two sides at its end 76. he forms of the sheath may have any useful modifica tions; the blade itself may have anycutting angle up to that of the form of a hook in Fig. 7. to operate it by a pulling action above. Arrangements either for actuating the sheath, or the sheath and blade at the same time, may also. be employed, the blade being operated by either a pushing or a pulling action.

vices which is that the sheath and the cutter bear upon the warp and the pile of the carpet and form an obstacle to the lowering of the grippers of the looping tool at the moment when they ought to closely approach the warp of the carpet and the knotting line in order to efiect the locking of the knot,

which movement of approach should be The blade being thin it is preferable There is a peculiarity in this system of adding a cutter to the looping dethread which bring it to the distributing center are illustrated in Figs. 9 and 10.

This distributing blade is of any suitable construction atthe part 91, but at its lower part 92 it is incased in a movable U-shaped guide 93. This guide rocks upon the axis 94:

and is held on the point 98 of the blade by V the tension of the spring 95 fixed upon the movable guide 97 and on the blade at 96. The open position of this guide, indicated by the dotted lines in Fig. 9, shows the facility which it gives for providing each blade with its pile thread and also the facility for controlling V the tension on the pile thread by the spring 95. Another improvement is the provision of distributing blades for a number of pile threads.

The movableguide shown in front elevation at Fig. 11 and in side elevation at Fig. 12 has its center of oscillation at 94L and its spring 95, but in this guide is placed a piece 99 having its center of oscillation about a pin 100 fixed upon the two sides of the movable guide. One of the pile threads passes into the guide above the piece 99, and the other beneath, and both are held at the same time by the tension of the spring 95. The distributing operation of these multiple threads by the'blade of the distributer is effected on the loom by the jacquard which lowers the blade and at the same time actuates a stop piece in such a manner that the blade presents one or the, other thread at the height of the distributing gripper. The intermediate piece 99 can be repeated in a longer movable guide and the number of threads can thus be multiplied. Another system of blades for a plurality of pile threads is represented by Figs. 13 and 14. The guide is of similar construction but is no longer movable but is fixed upon the blade. Traversing the two side walls a pin 101 supports the spring 102, 103. This spring gives at 104- and 105 the required pressure for regulating the tension for holding back thepile threads. This system can also be repeated to give several other threads and is operated, like the preceding system,

- by the jacquard to present its different threads at the height of the distributing gripper. The distributing gripper is characterized by its jaws having penetrating partitions or the like which provide means for a firm retention of the pile thread; and by its length, which allows of placing its center of oscillation above the encumbrance of the mechanism and outside the network of threads extending to the distributer. The small space which it occupies under these different conditions facilitates the multiplicity of the apparatus in the width of the loom; i

Fig. 15 is a front view and Figllfi'an under side view representing an open dis-' tributing gripper with interlocking jaws and circular movement and Figs. 17 and 18 represent the same almost closed. This gripper consists o-fan outer tube 106 andarod 107 which can turn in the tube. The tube is provided at the lower end with a jaw 108;

the rod 107 has another jaw 109 which jaws being concentric work one within the other; the walls of the jaws can be straight. or cut at any suitable angle or even in suitable concave forms or one of the Walls can be straight andthe other at an-angle or con cave. These are examples of possible modifirm retention for the pile thread the angu-' la-r form indicated by Figs. 16," 18 is preferably adapted as it-presents the following advantages: 1. Of bringing back to the top of the angle, that is to say,to a very precise point. the distribution ofv the; pile thread.

Of uniting at the same point and also of retaining all the threads composing the pile when the latter consists of many'threads.

fications, butthe object being to provide a lbO rotation is effected in the collar 114 fixed on the beam 115 indicated in dotted lines. The bore of the collar is sufficiently large to al low the rocking of the gripper for drawing the pile thread. This oscillation is transmitted by the shaft 116 actuated by a cam' and on which is fixed, by means of the bear ing 117, a ring 118. This shaft causes the oscillation of all the grippers of a single loom.

As examples, the following modifications of construction are givenas operating according to theprinciples and with all the advantages hereinbefore set forth: Fig. 19' shows a gripper composed ofa flattened tube 119 serving as a sheath for a blade 120which slides within it. Fig. 20 is a front view and 1 Fig. '21 a side view showing another gripper composed of two plates sliding one upon the other. The return bend 121 is arranged to seize and hold the pile thread in the recess of the blade. This kind of gripper is actu any possible combination such asstraight or angular Walls, etc., as above explained.

We claim as our invention 1. A loom of the class described provided with knotting tubes having an oscillatory movement, a rigid frame comprising longitudinal bars upon which they are fixed, said frame being supported at each end at points constituting centers of oscillation of said knotting tubes.

2. Pile thread distributing plates for a loom of the class described comprising a relatively fixed part, a holding device pressing and delivering the thread against said relatively fixed part, and a part movable between said pressing and delivering device and said relatively fixed part adapted to engage the pile thread at its opposite sides respectively.

3. Pile thread distributing apparatus for a loom of the class described, comprising a relatively fixed part, and a holding device yieldingly pressing the thread against said relatively fixed part, and a relatively movable piece between said yieldingly pressing device and said relatively fixed part and adapted to engage at its opposite sides two pile threads. 7

a. Distributing grippers for a loom of the class described, said grippers having reciprocating jaws one adapted to enter the other and at least one of said jaws being of angular shape so as to provide an exact point of engagement.

5. A loom of the class described having a looping tool, a cutting device, and an oscillating frame on which said tool and cutting device are both mounted so as to oscillate together during their operation.

In witness whereof, we have hereunto signed our names in the presence of two subscribing Witnesses.

CHARLES RENARD. ALBERT RENARD.

H. C. CoxE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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