US2220924A

US2220924A - Shuttleless wire mesh loom

Info

Publication number: US2220924A
Application number: US224246A
Authority: US
Inventors: Holtz Frederick Von
Original assignee: C O JELLIFF Manufacturing CORP
Current assignee: C O JELLIFF MANUFACTURING Corp
Priority date: 1938-08-11
Filing date: 1938-08-11
Publication date: 1940-11-12
Anticipated expiration: 1957-11-12

Description

N@v.12,1940. RV'ON HOLTZ 2,220,924

SHUTTILELESS WIRE MESH Loom Filed Aug. 11, 1958 s Sheet-Sheet 1 Arman-NE Nov. 12, 1940. VON HOLTZ 2,220,924

SHUTTLELESS WIRE MESH LOOM Filed Aug. 11, 1938 3 Sheets-Sheet 2 F 10 IIQQVENTOR W 73% Nair. '12, 1940'.-

2 F. VON HQLTZ SHUTTLELESS WIRE MESH LOOM Filed Aug. 11, 1958 3 Sheets-Sheet 3 VENT R ATTORNEYS,

Patented Nov. 12, 1940 want 1 QFFHC I SHUTTLELESS E MESH DOOM Application August 11', 1938, Serial No 224,246

I 11 claims. (01.139-127) This invention relates to looms, particularly to looms for weaving wire mesh or cloth, including relatively large mesh using relatively heavy wire, and it is a principal object of the invention 5 to provide a loom in which the filler or cross wires are inserted in the open shed without the use of a shuttle or bobbin thus doing away with the necessity of renewing the bobbins in the shuttle, with consequent holding up or stopping of the loom, and so that the weaving operation may be continued indefinitely, thus doing away with the large loss of time required for renewing the bobbins in the old type of machine.

With the foregoing and other objects in view,

I have devised a construction, one form of which is illustrated in the accompanying drawings forming a part of this specification. It will,,

however, be understood that various changes and modifications may be employed within the scope of the invention and the claims.

In these drawings:

Fig. 1 is a front elevational view of the main portion of the loom with my improvement applied thereto;

Fig. 2 is a detailed vertical sectional view through a portion of the lay and a cut-ofl mechanism associated therewith;

Fig. 3 is apartial'top plan and sectional elevation of the device of Fig. 2, the section being substantially on line 3-3 of Fig. 2;

Fig. 4 is an end view of the main portion of the loom with a portion of the lay in section, the

view being taken substantially on line 44 of Fig. 5 is a top plan view of the guide and trip mechanism at one side of the lay;

Fig. 6 is a horizontal longitudinal section through the heads for laying the wire in the open shed showing the position of the elements after they have come together within the shed, the section being substantially on line 6-6 of Fig. 8;

Fig. 7 is a similar view of parts of these elements showing their position just before they come together within the shed;

Fig. 8 is a longitudinal section substantially on line 8-8 of Fig. 6;

- Fig. 9 is' a transverse section substantiallyon line 9-4 of Fig. 6; Fig. 10 is'a plan view of a portion of the W1! means within\the shed;.

Fig. 11 is a top plan view of a portion of the warp and mesh, and the lay associated therewith; 5 Fig. 12 is an elevational View looking toward wires or for the length of time I mesh and shed showing the cross wire inserting the right hand end of the machine showing an alternative'arrangement showing mechanism for supplying a crimped cross or filler wire instead of a straight" wire to be. laid in the shed;

Fig. 13 is a view thereof from the front of the 5 machine; and

Fig. 14 is a detailed enlarged view showing the. means for crimping the wire.

In ordinary looms the cross or filler. wires are laid in the shed by a reciprocating shuttle car 10 rying a spool or bobbin on which the filler or cross wire is wound. Due to the restricted space available the amount of wire which may be carried on the spool or bobbin is limited so that a continuous weaving operation can be carried on 15 for a short timeonly, when the loom must be stopped to permit removal of the empty spool 01' bobbin from the shuttle and the insertion of a filled or wound spool or bobbin. It will be ob-- 'vious that the'changing of the bobbins requires 9 considerable time during which the loom is stopped or not operated. In fact with the coarser wires considerably more time may be required for changing the spool or bobbins than is available forv the actual weaving operation. 5

. devices moving into and out of the open shed at the oppositesides thereof, the wires being fed from a continuous coil or supply of any desired 5 size or length so that the machine may operate practically continuously for weaving a mesh of a length corresponding to the length of the warp eduired to exhaust the coil or filler wire of any desired size. It will be evident that this mechanism therefore greatly reduces the time the loom is shut down and not operating. It therefore greatly increases production and the efliciency of the machine and I the operator. 45 The drawings do not show the entire loom mechanism as a great deal of it may be of standard construction, and therefore only suflicient is illustrated for a clear understanding of the invention. The upper part of the upright main cross wires.

of the lay may be swung forwardly and backwardly in the usual manner in proper timed relation with the operation of the shed mechanism (not shown) to lay and position the filler or This lay frame includes two upright members l5 shown in the present case as I-beams hung at their upper ends on the shaft l3 outside the frame members l2, and they are transverse beam l8. At their lower ends these members l5 carry horizontally connecting angle members l1 and II connected, by any suitable number of straps l9,and carry between them the reed 20 passing vertically between the warp wires indicated at 2| in the usual manner, and as the lower end of the lay is swung back and forth to position the cross wires in conjunction with proper feed of the warps to set the cross wires at the proper spacing for the desired mesh in the well known and usual manner. As indicated above the shed mechanism for alternately raising and lowering the warp wires 2i to form the shed is not shown, but it will be understood that the alternate warp wires are raised and lowered alternately in the usual manner to cross over the last laid cross wire in preparation for the laying of the next cross wire. The filler or cross wires are indicated at 22. .The woven mesh or cloth 8 may be run over a guide bar or roller 22 and wound on a cloth beam 24 in the usual manner, the feed mechanism for rotating this beam for the step by step feed being of any usual type and is not shown as it forms no part of the present invention.

' As suggested above, in this device, instead of having a shuttle and picker mechanism for throwing the shuttle through the shed, means v are provided for inserting the free end of a cross wire through a portion of the shed from one side thereof and other means operated from the other side of the shed for gripping this free 'end of the wire and drawing it through the shed to the .proper location. Then the wire is cut off and positioned by the reed, and after the warp wires are reversed this mechanism again operates to insert another cross wire in the shed and so on indefinitely. This mechanism comprises two reciprocating

head members

25 and 28 reciprocated into and from the shed at the opposite sides thereof. The

head 25 is mounted on a, tubular bar 21 slidable in suitable guides carried between the lay beams l1 and. I8 and carried at its free end on a cross head 28 having rollers 25 running on the opposite edges of a guide bar 30 carried by the lay beams l1 and I8 and projecting outwardly beyond the free end thereof as shown. The other reciprocable head 26 is mounted in a similar manner at the opposite side of the warp wires andat the other end of the lay beams, this head being carried by the tubular bar 2| running through suitable guides and connected to a cross head similar to the cross headtype. such for example as a series of alternately connected adjacent their upper ends bythe arranged grooved rollers between which the wire passes and is bent alternately in opposite directions a suitable amount in the well known manner to straighten the wire before it passes into the tubular bar 21 and the head 25. Within this head is a stationary adjustable gripping ed in the head, and having a stem 38 against which the adjusting screw 38 threaded into the block 81 engages and by which the jaw may be adjustable for difl'erentsize wire and to locate it in the proper location, and then the adjusting screw secured by a lock nut 40. Cooperating with this jaw is a movable jaw 4| pivoted in the head at 42 and having a roughened gripping surface 43 opposite the jaw with the wire 22a between them. .Mountedto slide in the head, is a cam' or slide 44 having a cam surface 45 engaging the inclined underside 4la of the jaw 4|. This jaw has a rack 48 meshing with a pinion law 35 seated in a recess 36 in a block 31 mount- 41 mounted on a short-transverse shaft 48 and having an extension finger 48 projecting from one side of the head to engage a tripping pawl or stop 50 at certain times during the movement .of the head 25 to operate the cam 44 and the jaw 41 as will later be described. The pawl or stop 50 is mounted on a bar 5| mounted on the lay, in the present case by brackets 52 on two of the cross straps I8, and this bar is adjustable in these brackets so as to properly position the pawl or stop 50, and the bar is held in adjusted position by any suitable means such for example as set screws 52a. The stop 50 is pivoted at 53 and is rounded at 54 so that the upper end may swing to the right as viewed in Fig. 6 but cannot swing to the left beyond the upright position shown as it rests against a stop wall 55. A spring 58 is connected to this pawl or stop as shown and holds it in the upright position against the stop wall 55,, but permits the upper end to swing toward the right at certain times as will later be described. The cam or Y slide 44 is extended so as to head as shown at 51.

Mounted in the other head 26 is a stationary jaw 58' similar to the jaw 85 and mounted in the same manner'in the block 59 in the head. Opposite this jaw is a movable jaw. 80 pivoted at 51 and having a roughened gripping surface 52 opposite the jaw 58. This jaw is operated by a sliding cam or slide 83 having a cam surface 64 to engage the inclined back surface 65 of the project from the .jaw. This cam is mounted to slide in the head and has a rack 88 meshing with the pinion 81 mounted on a short transverse shaft 88, and having an operating finger 59 projecting through an elongated slot 18 in the cam 83 and also projecting beyond the surface of the head 28 under certain conditions as shown in Fig. 6. To prevent casual movement of the cams or slides 44 and 63 there is provided for each a friction block 1| engaging the side wall of the cam and pressed against the same by spring 12. This block will hold the cams in a given position until they are positively shifted. The head 26 has a longitudinal opening '13 in alignment with the jaws 58 and to receive the free end of the wire as shown in Fig. 6. The cam 83 also has a projecting end 14 projecting beyond the forward surface of the head 28 in, alignment with the projecting end 51 of the cam 44 in the other head 25 for a purpose presently to be described. The projecting finger 88 carried'by the head 25 may engage the stationary stop 15 ,under certain conditions, this stop being mounted on an ad- -justable bar 10 similar to the bar 5| for the stop 59, and adjustably mounted in similar brackets 'll mounted on the connecting straps l9 at the opposite end of the members ll of the lay and may be secured in adjusted positions by a set screw 11a.

The

heads

25 and 26 are reciprocated into and out of the shed in certain timed relation with the operation of the warp wires and of the swinging of the lay to cause the reed 20 to set the cross wire. For this purpose there is a connecting rod 18 pivotally connected to the cross head 28 at 19 and at its opposite end to a rotatable lever arm 80. Similarly the head 26 is operated by a connecting rod 8| connected to a pivotal lever 82 and at its opposite end connected to a cross head on the tubular bar 3| similar to the cross head 28. The

levers

89 and 82 are mounted on opposite ends of the rotatable block 83 mounted in an upright 84 extending between the upper member I1 and the member I6 of the lay. This block carries a sprocket 85 operated by a chain drive 86 from an upper sprocket 81 mounted on a shaft in the bearing bracket 88. On this sprocket shaft is a beveled gear 89 meshing with another beveled gear 90 on the cross shaft 9| which runs in suitable bearings 92 mounted on the uprights l5. Mounted to turn on this shaft at the opposite end thereof are

spur gears

93 and 94 having

clutch teeth

95 and 96 respectively on their hubs adapted to'engage similar clutch teeth on collars 91 and 98 splined on the shaft so as to be slidable thereon but which cause the shaft to turn withthem, and a spring 99 for each clutch collar tends to shift it to engagement with the clutch teeth on the hubs of thegears. The ear 99 meshes with a reciprocating rack I00 operated by a connecting rod |8| from a crank I02 rotated from suitable driving mechanism, as by a pulley I99 and belt I99 operated from any suitable source of power (not .shown), with a suitable gear train I09 running to the shaft I99 on which the crank :02 is mounted.

The gear 99 meshes with a similar reciprocating rack I91 operated by a connecting rod I08 from another crank on the shaft I05 similar to the crank I82 but set at about from the first crank so that as the shaft I05 rotates the rack N19 is being moved upwardly as indicated by the arrow I99 while the rack ill? is being moved downwardly as indicated by the arrow H9, and vice versa. It will be seen that the clutch 95, 9? is so arranged that when the rack I08 is moving upwardly the gear 99 is driving the shaft 9| in the'direction indicated by the arrow Ill, and during this movement as the rack I01 is moving downwardly the clutch 9? is merely rotating backwardly without driving the shaft. However, onthe upward movement of the shaft ||l'| the gear 94 will drive'the shaft 9| in the same directhese arms reciprocates the

rods

21 and 8| toward and from each other and therefore reciprocate the two

heads

25 and 28 toward and from each other. It will be seen that in the normal position shown in full lines Figs. 1 and 11 the

heads

25 and 26 are on opposite sides of the warp wire set up 2|, and therefore are on opposite sides of the shed. During the first half revolution of the

crank arms

88, 82 which occurs after the shed has been formed or opened by raising one half of the warp wires and depressing the other half, the heads are shifted into the shed from the opposite sides thereof to the dotted line position of Fig. 11 which is also the position of Fig. 6.

Before this movement starts the free end of the wire 2211 has been threaded through the head 25 and projects therefrom a suitable distance. As the head 25 moves forwardly toward the shed the finger 49 'hits the stop 50 causing this finger 49 to be thrown to the'right and upwardly to the position of Fig. 7. This movement turns the gear 41 and through the rack 46 slides the cam or slide 44 to the left or toward the'forward end of the head. This movement causes the cam surface 45 to slide on the inclined surface 4|a of the pawl 4| and swing its gripping surface 43 against the wire 22a and firmly grip this wire between the

jaws

43 and 35. It will therefore be seen that as the head 25 moves forward into the shed it carries the wire 22a withit. During this movement of the head 25 into the shed the head 26 is also moving into the shed from the opposite side thereof, and the jaw 69 and cam 63 are during this movement in the released position as shown in Fig. 7.

As the two heads approach each other at substantially the center of the shed which is the position of Fig. 7, their movements being indicated by the arrows H2 and M3, the free end of the wire 22a which projects from the head 25 is inserted in the head 26 between the

jaws

58 and 69. The front walls of the heads may be formed by inserted plates.|il and H having guide openings Illa and is for guiding the end of the wire. As the two heads come substantially together the two projecting

ends

51 and 14 of the cams M and 53 engage, pushing the cam 44 to the right and the cam 63 to the left to the position of Fig.

6. This movement of the cam 44 to the right permits the jaw 4| to release the wire 22a while the movement of the cam 63 to the left by sliding of the cam surface 64 on the inclined surface 65 clamps the jaw 59 against the wire so that it is clamped between the jaws 50 and 59. The other half revolution of the

crank arms

80 and 82 now begins. moving the head 25 to the right and head 26 to the left. It will be apparent that now the jaw 4| is released the movement of the head 25 will have no eifect on the wire, but as the

jaws

60 and 58 are gripping-the wire movement of the head 25 to the left will draw the wire with it and finish placing this cross wire in the shed.

After the head 26 passes out of the shed the projecting finger 69 (Fig. 6) engages the stationary stop 15 throwing this finger to the position of Fig. 7 which movement through the gear 68 and rack 56 shi'ftsthe cam 53 to the right and releases the jaw 60. This, of course, releases the grip on the wire 22a and this retracting movement of the head 26 is carried far enough so that the head slides completely off the free end of the wire permitting the wire which is now laid in the shed to be shifted forwardly to the proper position by the reed20. As the lay swings forwardly to thus operate the reed 20 the wire is automatically cut. 5

means such as adjusting screws II6, the block being secured by a suitable bolt I I1 threaded into the block and extending through an elongated slot I I8. After adjustment it may be clamped in the adjusted position by the bolt I I1. At its forward end this block carries aremovable cutter II9 secured by any suitable clamp I20, it being located at the outer side of the wire 22a as indicated. 'Mounted to swing with the lay is a complementary cutter blade I2 I. This is mounted on a connecting bracket I22 carried by the member I! of the lay and it is adjustable on this bracket so that it may be properly positioned with respect to the cutter II9. It will be seen that as the lay member I! is swung forwardly as indicated by the arrow I23 the cutter I2I will be forced against the wire 22a and by cooperation with the cutter II9 will sever the wire. This cutter as shown in Figs. 1 and 11 is located at the desired position to the right of the warp shed. In order to insure proper operation of the cutter the block II may have therein above the wire 22a. a guideway I24 with which cooperates a guide I25 on the bracket I22 so as to maintain the two cutters II 9 and HI in proper alignment during the cutting operation. As the lay swings back and the warp threads are part of them raised and part of them lowered to form the shed the

heads

25 and 26 are again fed forwardly into the shed to lay the nest cross wire in the same manner.

As the head 25 is moved backwardly out of the shed the trigger 49 which during this movement is extended as shown in Fig. 6 hits the pivoted stop 50, but as this stop is free to swing to the right .the trigger merely slides over this side of the stop 50, and as this stop connot swing to the left the trigger .49 is swung up to the position of Fig. 7, andas previously described this movement operates the cam 44 to the left causing the jaw H to grip the wire 22a, and as also previously described as this head 25 again movesinto the shed it carries the next length of wire into the shed to be gripped and drawn completely into the shed and across the warp wires by the head 26 as previously described. The operationis then again repeatedindefinitely and each time the two

heads

25 and 26 are 'reciprocated into and out of the shed across or filler wire 22 is laid across the warp threads.

The lay is swung backwardly and forwardly by links I21 pivoted to the lay at I26 and at I29 to a crank arm I30 on the shaft I06.

In Figs. 12, 13 and 14 is shown means whereby the cross or filler wires may be crlmped before they are laid in the shed, the crimping giving them substantially the shape they will have.

when laid in the mesh, thus giving a mesh in which the wires are preformed before being placed in the mesh to substantially their proper shape'when in thec'ompleted mesh or screen and retaining the wires in their relative positions. Inthis arrangement there is a sprocket Ill mounting the shaft IIIS'connected by a drive chain I32 with a sprocket I 23 on the shaft I24. On this shaft is a gear I35 loosely meshing with a similargear I36 so that the two 2329924 tail in Figs. 2 and 3. Mounted on the stationary gears are driven by the chain I32. The filler .wire I31 corresponding to the wire 22a is fed from a supply coil I38 and betweenthese gears as shown in Figs. 12 and 14. The teeth of the gears are so shapedand arranged that as the wire passes between them it is crlmped to the desired shape as indicated at I3'la which is preferably substantially the shape it is desired the wire should have when made into finished mesh With this crimped wire the straightener 34 is either omitted or the rollers 34a thereof are separated so as to have no straightening effect on the wire. Otherwise the operation is the same as with the straight wire.

It will be seen that with this mechanism no shuttle is required, doing away with shuttle throwing mechanism and the use of wound spools or bobbins. It will also be seen that the operation of laying the cross or filler wires may be continued indefinitely depending on the amount of wire in the supplycoilor the length of the warp wires, and that there is no necessity of stopping the loom for the changing of spools or bobbins in a shuttle, thus greatly increasing the efiiciency of the machine and the output.

Having thus set forth the nature of my invention, what I claim is:

1. In a wire mesh loom, means for inserting the cross or filler wires in the open shed comprising a grip for the wire movable into the shed from one side thereof to insert the wire, a second grip movable into the shed from the opposite side thereof to receive the wire from the first grip and draw it through the shed, means for movin said grips into and from the shed in timed relation with the operation of the shed, and cooperating means associated with the grips and movable therewith arranged to engage as the grips approach each other and operable by relative movement of the grips toward each other to release the first grip and set the second grip.

2. In a wire mesh loom, means for inserting the cross or filler wires into the open shed comprising a grip for the wire movable into the shed from one side thereof to insert the wire, means for gripping the inserted wire and holding it while the flrstgrip is being withdrawn from the shed, means for-moving said first grip into and from the shed in timed relation with operation of the shed, and means associated with each grip for operating them, the means associated with the first grip being arranged to engage the means associated with the second grip and both operated by relative movement of the first grip toward the second to release the first grip and set i the second grip.

3. In a. wire mesh loom, means for inserting the free end of a cross or filler wire into the open shed and movable into the shed from one side thereof, means operable from the other side of the shed to grip said free end of the wire to retain it in the shed, means for operating the gripping means arranged to be engaged by the first mentioned means as the first and second mentioned means approach each other and operable by relative movement of said two means toward each other to operate the gripping means to grip the wire, and means for operating said first and second mentioned means'in timed rela- 5 tion with the operation of the shed.

4. In a wire 'mesh loom, means for carrying the free end of a cross wire into and part way across the open shed from one side thereof, means movable into the shed from the opposite side thereof to grip the wire and draw it into the shed, means associated with the gripping means arranged to be engaged by the first means as the first and second means approach each other and operable by relative movement of said means toward each other to release the first means, and means for operating the said first and second mentioned means in timedrelation with the operation of the shed. 1

5. In a wire mesh loom, means for inserting the cross or filler wires in the open shed comprising reciprocable heads on opposite sides of the shed, jaws onthe heads for gripping the wire, means for moving said heads into and from the open shed in timed relation with the operation of the shed, means outside the shed for causing the jaw on one of said heads to grip the wire and carry it into the shed, cooperating means on said heads arranged to engage as the heads approach each other and operable by relative movement of the heads toward each other to release the jaw on the first head and set the jaw on the second head to draw the wire through the shed, and means outside the shed to release the second jaw after it draws the wire means as the head moves forward toward the 5 shed to operate the jaws to grip the wire to carry it into the shed, means on the heads operated as the heads meet within the shed to release the jaws on the first head and set the jaws on the second head to grip' the wire and draw it into the shed as said head is moved outwardly. a stop to release the second jaws after the wire is set in the shed, and means to cut ed the wire to length.

'7. In a wire mesh loom, a head on each of the opposite sides of the shed, means for moving said heads into and from the open shed, jaws on one of said heads for gripping a cross wire and carrying it into the shed, jaws onthe otherhead for gripping the wire carried'bythe first head and drawing it into the shed, slides on said heads arranged to operate the jaws and having portions projecting from the heads in' alignment so that as the heads come together said projecting portions engage to shift the slides, and

said slides being arranged so that such shifting thereof will release the jaws on the first head and set the jaws on the second head.

8'. In a wire mesh loom including a swinging lay, means carried by the lay for inserting the cross or filler wires in the open shed comprising a grip for a wire movable into the 5113a from one i side thereof to insert the wire, a second grip' movable into the shed from the opposite side thereof to receive the free end of the wire from the first grip and draw it through the shed, means for moving said grips into and from the 5 shed in timed relation with the operation of the shed and the lay, cooperating means associated and movable with each grip arranged to engage as the grips approach each other and operable by relative movement of the grips toward each 10 other to release the first grip and set the second grip, and means operated by movement of the lay to cut off the wire to length.

9. In a wire mesh loom, a head on each of the opposite sides of the shed, means for moving 15 said heads into and from the open shed, jaws on one of said heads for gripping a cross wire and carrying it into the shed, jaws on the other head for gripping the wire carried by the first head and drawing it into the shed, a cam on each 20 7 head arranged to operate the jaws, stop, means at one side of the lay'to shift the cam in one head on movement of the head toward the lay to set the jawsto grip the wire and carry it 'into the shed, means for shifting the cams pro- 25 jecting from each head so that as the heads come together within the shed said projecting portions are operated to shift the cams, said cams being arranged so that such shifting thereof will release the jaws on the first head and set the 30 jaws on the second head to grip the wire, and

a stop means on the other side of the shed from the first stop means to shift the cam of the second head to release the jaws on that head after the wire has been drawn through the shed. 35

, each other and operable by relative movement of said means toward each other to cause the first means to release the wire-and the second means to hold it, means for operating said mentioned means in timed relation with the opera- 50 tion of the shed, and means operated by movemerit of the lay to cut off the wire to;length.

'11. In awire mesh loom, means for inserting the cross .or filler wires in the open shed comprising a grip for the wire movable into the shed 55 from one side thereof to insert the wire, a secmovement of the grips toward each other to 05 release the first grip and set the second, and means for crimping the wire before inserting it in the shed to substantially the shape it will have in the finished mesh.

FREDERICK vo HOL'I'Z.