US755719A - Wire-fabric loom. - Google Patents

Description

N6. 755,719. PATENTED-MAR. 29, 1904. J. w. SNEDBKER.

WIRE FABRIC 1.00M; Arrmoulipn FILED MAY 4. 1903.

15 snnn'rs-snnnr 1.

N0 IODBL.

/ N :5... A El No. 755,719. PATENTED MAR. 29, 1904.

' J. W. SNEDEKER.

WIRE FABRIC, LOOM. APPLIOATION FILED MAY 4, 1903.

15 SHEETS-SHEET 2.

11 0 IonnLf A. 2 W NEYI r! K i 0 BE u E E ,7 ZYNESSES. '3 60,

' PATENTED MAR. 29, 1904.

J. W. SNEDEKER. WIRE FABRIC LOOM.

APPLIOA'IIDN mam In 4, 1903.

16 SHEETS-SHEET 3.

no MODEL.

m l avg, 9 0

Allorhey a.

No. 755,719. PATENT-ED MAR; 29, 1904.

J. w. SNBDEKBR.

WIRE FABRIC LOOM.

APPLICATION FILED MAY 4, 1903. K0 IODBL.

m: NORRIS PETERS co. PHdm-I mm, WASHINGION, u I:

No. 755,719. PATENTED MAR. 29, 1904.- J. w. SNEDEKER.

WIRE FABRIC LOOM.

APPLICATION FILED MAY 4, 1903.

N0 MODEL. v 15 SHEETS-SHEET 5.

. r a; I

W WW Tu: uonms PETERS no. wow-u'mo. wnsmuwun. u c.

No. 755,719. PATENTED MAI L29,1904:.- J. w. SNEDBKER. v

WIRE FABRIC LOOM.

APPLIOATION FILED MAY 4, 1903.

N0 MODEL. 15 SHEETS-SHEET 6- No. 755,719. PATENTED MAR. 29, 1904.

J. W. SNEDEKER.

WIRE-FABRIC LOOM.

APPLICATION FILED MAY 4, 1903. N0 MODEL.

15 SHEETS-$111121 'I 'PATBNTED MAR. 29, 1904. J. w. SNEDBKERL WIRE FABRIC LOOM.

APPLIU ATION FILED MAY 4, 1903.

15 SHEETS-SHEET 8.

HO HODEL.

No. 755,719. PATENTED MAR. 29, 1904."

J. W. SNEDEKER.

WIRE FABRIC 1.00M.

APPLICATION FILED MAY 4, 1903.

N0 MODEL. 15 SHEETS-SHEET 9.

No. 755,719. PATBNTED MAR. 29, 1904. J. W. SNEDEKER.

WIRE FABRIC LOOM.

APPLICATION FILED MAY 4, 1903.

H0 MODEL. 15 SHEETS-SEEET 10.

warm W J3 Q. M. v WW v /4% A 0 9 9 2 p A M D. E T N E T A .P

m Du K E D Pu N S Th 0w 1 1 5 5 7 0w N WIRE FABRIC LOOM.

APPLIUATION FILED In 4, 1903.

15 SHEETSSHEET 11.

N0 MODEL.

PATENTED MAR. 29, 1904. J. W. SNEDEKER. WIRE FABRIC LOOM. APPLICATION FILED MAY 4, 1903.

15 SHEETS-SHEET 12- NO MODEL.

IIIHHH w Hill" In No. 755,719. PATENTED MAR. 29, 1904.

J. W. SNEDEKER.

WIRE FABRIC LOOM.

APPLIOATION FILED MAY 4, 1903.

H0 MODEL. 15 SHEfiTS-BHEET 13.

W MM; g

PATBNTED MAR. 29, 1904.

J. W. SNEDBKER.

WIRE FABRIC LOOM APPLICATION 21mm MAY 4, 1903. I no MODEL. 15 SHEETS-SHEET 14.

No. 755,719; PATENTED MAR. 29, 1904.

J. w. SNEDBKER. WIRE FABRIC LOOM.

APPLICATION FILED MAY 4, 1903. K0 MODEL. v 16 SHEETS-SHEET 15.

Patented March 29, 1904.

PATENT OFFICE.

JAMES W. SNEDEKER, OF ADRIAN, MICHIGAN.

WIRE-FABRIC- LOOM.

SPECIFICATION forming part of Letters Patent N0. 755,719, dated March 29, 1904. Applicati on filed May 4, 1903. Serial No. 155,635. (No model.)

To all whom it may concern.-

Be it known that I, J AMES W. SNEDEKER, a citizen of the United States, residing at Adrian, in the county of Lenawee, State of Michigan, have invented certain new and useful Improvements in Looms; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in ,the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of thisspecification. v This invention relates to a loom for weaving wire fabric, more especially designed for;

the weaving of wire fencing; and it consists in the construction and arrangement of parts.

through the machine, as distinguished from the intermittent movementof the fabric incident to looms in common use, where an actual weaving together of the strands of the fabric is accomplished.

A further object is to provide for carrying the bobbins which form the woof-strands upon shuttles, whereby they are made to travel across the warp-strands of the fabric and are wound therearound in the operation of weaving the fabric, the shuttles carrying the bobbins being moved longitudinally of the machine and transversely thereof and dropped upon the warp-wires and raised therefrom alternately, while the needle of each carrying the bobbin is intermittently driven to windor weave the woof-wires into the fabric.

A further object is to provide means for carrying the shuttles longitudinally of the machine in the operation of weaving and returning them into position for a succeeding operation, the arrangement being such that a number of shuttles are always in operation while the machine is running. 1

' A further object is to provide for feeding the warp-wires into the machine and spacing them the requisite distance apart, at the same woven fabric into a suitable bundle at the tail of the machine and to provide for rotating said bundle in a manner to compensate for the gradual increase in its diameter, so as to avoid unduly straining the wires of the fabric.

All of the foregoing objects are accomplished by the mechanism illustrated in the accompanying drawings, in which Figure l is aperspective view of a machine embodying this invention. Fig. 2 is a longitudinal section therethrough as on dotted line 2 2 of Fig. 4:. Fig. 3 is an enlarged detail in section of parts hereinafter referred to. Fig. 4 is a transverse section through the machine. Fig. 5 is a horizontal section through the machine as on line 5 5 of Fig. 4; Fig. 6 is a fragmentary plan view of a portion of the machine Fig. 7 is an enlarged detail in perspective of one of the clamping-bars carrying the movable clamping-blocks between which the warp-wires of the fence are held in their passage through the machine. Fig. 8 is a fragmentary view in perspective of one of the clamping-bars in which the jawsare mounted, parts being broken away. Fig. 9 is a transverse section through one of the jaws and the clamping-bar in which it is seated as on line 9 9 of Fig. 8. Fig. 10 is a sectional view as on line 10 10 of Fig. 8. Fig. llis a rear View of the take-up or reel upon which the bundle is wound t the tail of the machine, partsbeing in sec ion. Fig. 12 is a sectional view as on line 12l12 of Fig. 11. Fig. 13 is a sectional view as on line 13 13 of Fig. 11. Fig. 14 is an enlarged pellspeotive view of the shuttle and a portion of tliefba upon which it is mounted to slide, showing l zmhu its normal position when traveling from wire to another. Fig. 15 is a like View showing the shuttle dropped upon the wire so as to cause said wire to lie in the needle of the file in shuttle preparatory to winding the woof-wire around the warp-wire of the fabric. Fig. 16 is an enlarged sectional view through the shuttle in its normal position. Fig. 17 is a sectional view through the shuttle as on line 17 17 of Fig. 16. Fig. 18 is a similar view showing by dotted lines the movement of parts. Fig. 19 is a perspective view in detail of the shuttle, parts being broken away to show arrangement and construction. Fig. 20 is a perspective view in detail of a portion of the driving-gear of the shuttle and the needle which receives motion from said gear. Figs. 21, 22, and 23 are perspective views in detail of a portion of the needle, showing the manner of carrying the bobbin and of wrapping it aboutthe longitudinal wires of a fence. Fig. 24 is a fragmentary view in perspective of the spring-clutch forming a part of the gearing of the shuttle and controlling the rotation of the needle carried thereon. Fig. 25 is a sectional view as on line 25 25 of Fig. 4, through the adjustable fork which supports one of the sprocket-wheels which carry the chain for driving the shuttle, showing means for adjusting said fork to place the proper tension on said chain. Fig. 26 is a fragmentary View in detailof a portion of one of the angle-faced pulleys over which the chains carrying the rack-sections travel, showing the links of said chains and the rack-sections mounted thereon. Fig. 27 is a sectional view through the clutch mechanism as on line 27 27 of Fig. 15. Fig. 28 is a view, partly in section, of one of the rotary spiral coilers.

Referring to the characters of reference, 1 designates a suitable frame in which the mechanism is mounted. Passing through the frame transversely and journaled therein is the main shaft 2. Upon oneof the projecting ends of said shaft is fixed the drive-pulley 3, adapted to carry the belt 4 by means of. which the machine is driven from any suitable source of power. Upon the projecting ends of the shaft 2 adjacent the frame of the machine are the pinions 5, which are fixed thereon and mesh with the pinions 6, fixed to the short countershafts 7 and 8, journaled in opposite sides of the frame. Said shafts 7 and 8 extend through the frame and carry upon their inner ends the -pinions 9 that mesh with like pinions 10,

journaled in brackets 11, supported from the frame. These pinions 9 and 10 are of equal diameter, and each engages the teeth of an endless rack adapted to travel horizontally in suitable ways in the frame. The pinions 9 engage the upper side of the lower racks 12, while the pinions 1O engage the lower side of the upper racks 13. The racks 12, as will be seen on referring to Fig. 26, comprise short sections mounted upon the face of the flat links 14, united by a hinged joint 15, forming endless chains located on each side and extending longitudinally of the frame, said chains passing around the pulleys 16 and 17, respectively, mounted upon the transverse shafts 18 and 19, crossing the frame transversely and journaled at their opposite ends. These pulleys are provided with the angle-faces 20, upon which the flat links 14 are adapted to lie, and with the curved peripheral recesses 21 in which the rounded hinge 15 between the links is adapted to engage. These chains carrying the endless racks 12 are adapted to travel in the horizontal ways 22 and 23, mounted upon and projecting laterally from the inner face of the frame, whereby said chains are guarded in their travel and the racks carried thereby are held to their work. The upper racks 13 are in like manner mounted upon the flat links 24 of the upper chains, the links of which are united by the joints 25 and are adapted to pass around the pulleys 26, mounted upon shafts journaled at the front and rear of the machine, said pulleys having the angle-faces 27, upon which said links are adapted to lie and having the curved peripheral recesses 28, which receive the joints 25 of said links. The chain-links carrying the upper racks, like those carrying the lower racks, are adapted to travel in the ways 29 and 30, extending laterally from the inner face of the frame, whereby they are confined in place and directed in their work.

It will now be apparent that the lower racks 12 are driven through the pinions 9 and that the upper racks 13 are driven through the pinions 10 and that both of said racks are driven in unison and at equal speed. Extending between the links 14, which carry the racks 12, are the clamp-bars 31, whose opposite ends are secured to the faces of said links. These clamp-bars are provided with a channel 32 therein, (see Figs. 7 and 8,) in which are seated the movable jaws 33, between which the warp or longitudinal wires 34 of the fence or fabric are adapted to lie and are securely clamped as they pass into the machine. The jaws 33 are provided with reduced stems 35, which enter the channel 32 and which are provided with the laterally-projecting lugs 36, that engage the undercut channels 37 in the way 32, whereby said jaws are allowed to move longitudinally, but are held against being lifted from said way. To allow-of the introduction of the jaws into said way, the clampbar at one end is provided with an enlargement 38 of the way 32 to accommodate the lugs 9, which enlargement communicates with the undercut channels 37, thereby enabling the jaws to be inserted in said bar.

To provide for clamping the wires between the jaws 33 in the clamp-bars, an antifrictionroller 39 is journaled in a fork 40, mounted upon the end of a reciprocatory rod 41, which passes through the end of said bar and carries upon its inner end a coiled spring 42, which is confined between a shoulder 43 on said bar and the face of the adjacent jaw 33, the inner end of said rod lying in a recess 44 in said jaw. As the chains upon which the clampbars are mounted travel into the machine the antifriction-roller 39 passes into engagement with an inclined plate 45, leading from the end of one of the ways 22, which carry said chains, so that the rod 41 is crowded inwardly and caused to exert a great pressure upon the spring 42, whereby said spring is compressed and its tension isexerted against the adjacent jaw 33, and its compressing force imparted to the other jaws through the interposed wires, thereby firmly clamping said wires while they are passing through the machine, the tension of said spring being maintained by the contact of the roller 39 with the side 46 of the way 22 during the passage through the machine of said bar, which tension is released when the bar passes beyond the side 46 of said way after reaching the opposite end of the machine, thereby releasing the jaws and permitting the wires to pass therefrom. It will be understood that each of the clamp-bars is equipped in the manner above described and that the jaws in each of said bars will in turn clamp the wires which are fed into the machine and hold them in a clamped position, the tension upon the clamping-jaws being maintained during the passage of each bar through the machine, as will be understood. The clamp-bars being mounted upon the links 14 of the endless chains, said bars are successively presented at the front of the machine and pass rearwardly therethrough with the jaws clamping the wires, said bars returning upon the lower side to the forward end of the machine for a succeeding operation.

Mounted in the opposed brackets 47, which are secured to the links 24 of the upper chains, are the bars 51, upon which the shuttles 50 are mounted to slide longitudinally. These shuttles carry the rotary needles that weave the woof-wires onto the warp-wires as they pass through the machine, said shuttles being driven by means of sprocket-chains which pass over sprocket-wheels also supported by the brackets. on the links 24 and receiving motion from a train of gears, as hereinafter stated.

There will be as many of these shuttles in operation at a time as there are longitudinal or warp wires in the fence or. fabric, and the machine will contain a sufficient number of shuttles to keep them constantly supplied at the feed'end thereof, so as to make continuous the operation of weaving as the fabric passes therethrough, each shuttle arriving in turn at the starting-point in the operation of weaving and continuing said operation during its pas- 24, by means of the set-screws 52, to enable said bars to be removed from the brackets for the purpose of placing the shuttles thereon. Each of the shuttles 50 is provided with a head 53, (see Figs. 14 and 15,) which receiv s the bar 51, upon which said head slides, as the shuttle travels transversely through the machine. The course described by each of the shuttles in its passage through the machine during the operation of the weaving is zigzag, as illustrated in Fig. 5, in which 54 designates a diagonal zigzag way in which the antifriction-roller 55, projecting from the head of. the shuttle, engages and which directs the shuttle in its travel during the operation of weaving. It will be noted that in most fencing the bars or longitudinal wires are of greater distance apart at the top than at the bottom, and the bends or deflections, therefore, in the diagonal zigzag way 54 are arranged to accommodate this variation between the wires of the fence. It will also be noted that said way is composed of alternate straight and oblique portions,that the straight portions 56 are all of the same length,and that the oblique portions 57 vary in length as the space between the wires of the fence vary from the top to the bottom. It will also be observed that the straight portions 56 of said way are parallel with the direction of movement of the fabric through the machine, and with the warp-wires 34, while the oblique portions 57 are at an angle to said direction of movement and to said wires. As the antifriction-roller 55 of each of the shuttles enters the. forward end of the way 54 said shuttles are brought into operative relation with the top wires of the fence, around which the bobbin carried by said shuttle is wound while said shuttle is traveling through the first straight portion of said way. After the bobbin has been wound around the top wire the shuttle is disengaged therefrom and is directed by the succeeding oblique portion of the way, after which the shuttle is again deflected to the succeeding or third wire of the fabric,and so on. The operation continues upon the passage of each shuttle through the machine, said shuttles starting in at the forward end of the machine upon the first wire, which for convenience we will term the top wire of the fence and ending upon the last or bottom wire before passing from engagement with the zigzag way. The shuttles follow each other in succession through the machine and those in operation work simultaneously, there being twelve shuttles in continuous operation when weaving a fence or fabric containing twelve bars,as shown in Fig. 5. It will be observed that the travel of the shuttles through the machine is at the same rate of speed as that of the travel of the fabric and that while the shuttles pass obliquely from one longitudinal wire to the other the bobbin which constitutes the woof-wire of the fabric is drawn straight between the warp-wires, and that when finally completed each woof-wire is wound upon the warp-wires at right angles thereto and that said woof-wires constitute the vertical or stay wires of the fence.

To explain more fully the operation of ,the shuttle in'the act of weaving the Woof-wire upon the warp-wires of the fabric, reference will be had to Figs. 14 to 24, inclusive. To the head 53 of the shuttle are attached the depending sides 58, forming a way between which is mounted the vertically-movable needle-block 59. Also attached to said head is the laterally-projecting plate 60, which extends over the top of the movable block and carries the depending finger 61. Journaled in the block 59 is the shaft 62, which has loosely mounted upon the outer end thereof a sprocket-wheel 63. Formed integral with the hub of said wheel is a disk 64. Fixed to the shaft 62,.adjacent to said disk, is a second disk 65. Mounted upon said shaft to slide thereon is a split clutch-collar 66, adapted to be normally held against the fixed disk by means of the coiled spring 67. In the split collar is a fixed pin 68, (see Fig. 24,) which passes through an opening in the disk 65 and is adapted to enter one of the apertures 69 in the disk 64 on the hub of the sprocket-wheel, whereby said wheel becomes locked to the shaft and will cause the shaft to rotate therewith. When the split collar is moved away from the disk 65, so as to withdraw the pin from one of the apertures in the disk 64, the sprocket-wheel becomes loose on the shaft and may be rotated without imparting movement thereto. Within the center of the vertically-movable block 59 is a recess or chamber 70. Fixed to the shaft 62 within said recess is a mutilated gear-wheel 71, having in one face thereof a camway 72, (see Fig. 20,) having an eccentric portion 73. Journaled between the brackets 74, on the rear face of the vertically-movable block, is the bell-crank lever 75, carrying upon the inwardly-projecting arm 76 thereof a roller 77, which travels in said canlway and is adapted to be actuated by the eccentric portion 73 as the gear-wheel 71 is rotated to operate the lever 75 for purposes hereinafter described. The lower end of the lever 75 is bifurcated, as at 78, and journaled in the sides of said forked portion are the bearing-lugs 79, which lie in the annular channel in the periphery of the needle 81, forming a connection between the needle and lever, which allows said needle to rotate. Upon the periphery of the needle are formed the longitudinally extending gearteeth 82, which mesh with the teeth of the gear 71, by means of which an intermittent rotary movement is imparted to said needle. The needle 81 is supported to rotate within the lower portion of the vertically-movable block 59 and is hollow from end to end thereof, being provided with an open channel 83 in its under face adapted to allow the warp-Wire to enter and lie in said needle when the needle drops thereon preparatory to winding the bobbin-wire therearound.

The verticalmovement which is imparted to the block 59, whereby the needle is dropped onto the longitudinal wire and is raised therefrom, is controlled by certain mechanical devices carried in said block and mounted on the plate 60, projecting from the head of the shuttle.

The movable block 59 is held locked in the raised position by means of a locking-arm 84, pivoted at 85 to the plate 60 and carrying upon its opposite end a block 86, (see Fig. 19,) having a projecting plunger 87, which enters and reciprocates in a housing 88, the end of which carries a coiled spring 89, which is confined between the wall of the housing and the enlarged portion of said plunger, whereby the tension of the spring 89 is exerted to crowd the arm 84 over into contact with the pin 90, which passes freely through the plate 60 and the top of the block 59 and is seated at its lower end in the rectangular frame 91, which occupies a portion of the space of the chamber 7 0 within said block adjacent to the gear-wheel 71. Within the side of said pin is formed a notch, as clearly shown at 92 in Fig. 17, in which the pivoted locking-arm 84 is adapted to engage when the vertically-movable block carrying the needle is raised to the normal position, as shown in Fig. 14, in which position said parts are supported wholly by engagement of the arm 84 with said pin 90. Projecting from the housing 88 and extending across the locking-arm 84 is a guard 88", which serves to confine said arm in place while allowing the necessary movement thereof. To provide for disengaging the arm 80 from said pin in order to allow the block to drop, so as to enable the needle to embrace the longitudinal wire of the fabric, a lug 93 is secured to the face of the bar 51, so as to project into the path of the upper end of the latch-bolt 94, which is mounted in the upper end of the block 59 upon the pivoted arm 95, carrying at its free end a vertical housing 96, in which the latch-bolt 94 is seated. The lower end of said bolt within said housing is reduced and earries a coiled spring 97, which returns said bolt after being depressed. Attached to the arm 95 is a projecting finger 98, carrying a coiled spring 99, confined in a recess in the upper end of the block 59 and whose tension is normally exerted to swing the arm 95 so as to maintain the latch-bolt 94 pressed forward in the opening through the plate 60, in which it reciprocates. By means of this arrangement as the shuttle is moved along the bar 51 the latch-bolt 94 will strike the lug 93, when said bolt will be forced back against the block 86 and move said block against the action of the spring 89 to carry the arm 84 free from the notch in the pin 90, when said pin will be released and will allow tle from movement while the needle is in the weaving position upon the wire, which position of parts is illustrated in Fig. 15: When in position upon the longitudinal wire 34, the needle is rotated to wind the stay or woof wire thereon, as hereinafter explained, after which the needle is raised from the wire, so as to enable the shuttle to pass to the succeeding wire of the fabric. The rotation of the needle is accomplished through the gear-wheel 71, mounted upon the shaft 62, which, as before explained, is driven through the medium of the clutch connected with the sprocket-wheel 63. Said sprocket-wheel is continuously rotated while the shuttle is passed through the machine by means of the sprocket-chain 104, which is held in contact with said sprocketwheel by the idle rollers 105, journaled in the outer ends of the cross-bar 106', mounted on said shaft adjacent said sprocket-wheel, said chain being driven by suitable gearing hereinafter explained. When the block 59, carrying the needle and its driving mechanism, drops so as to place the needle upon the wire, the clutch-collar 66 passes from engagement with the finger 61, allowing the spring 67 to throw the pin 68, carried by said collar, through the aperture in the disk and into one of the apertures 69 in the disk 64, thereby locking the disks 65 and 64 together and causing the shaft 62 to turn with the sprocket-wheel 63. This rotation of the shaft turns the gear-wheel 71 and imparts a rotary movement to the needle, whereby the bobbin carried by said shuttle is caused to wrap around the wire 34.

Projecting from the face of the gear-wheel 71 is an antifriction-roller 107 which extends into the frame 91, in which the pin is seated, so that as the gear rotates said roller is carried into contact with the upper side of said frame, which is raised thereby, as shown in Fig. 18 and by dotted lines in Fig. 17. This vertical movement of said frame carries the notch 92 in the pin 91 into the path of the locking-arm 84, which springs into said notch and locks said frame in the raised position. This movement brings the lower side of the frame 91 into the path of the roller 107, so that a further rotation of the gear-wheel 71 will cause said roller to engage the bottom of said frame, and thereby raise the block 59, carrying the needle and its operative mechanism. The vertical movement of the needle raises it from the wire 34 after it has completed the winding of the bobbin thereon, and to prevent a further rotation of the needle the upward movement of said block carries the clutch-collar 66 into engagement with the finger 61, whereby the rotary movement of said collar will cause said finger to wedge between it and said disk 65, as clearly shown in Fig. 14, withdrawing the pin from one of the apertures 69 in the disk 64, when the shaft 62 will cease to rotate and the gear 63 will run idly thereon,

in whichcondition the parts remain while the shuttle is passing from one wire to the other in its travel through the zigzag way 54, as before explained. It will be noted that as the block 59 is raised by the operation just described the bolt is moved vertically through the head of the shuttle, raising the arm 102 and carrying its fork from engagement with the lug 93, whereby the shuttle is rendered free to continue its travel along the bar 51. When a succeeding wire is reached in the passage of the shuttle, the latch 86 will again be tripped by contact of the succeeding lug 93, (there being as many of said lugs upon the shuttle-bar as there are longitudinal wires .in the fabric,) when the block will again fall so as to place the shuttle upon said wire and disengage the clutch-collar to again impart movement to the shuttle through the gear- Wheel, as before described, which operation is repeated at each of the longitudinal wires in the fabric by each of the shuttles in its passage through the machine.

It will be noted that the gear-wheel 71 carries a wide tooth 108 and that the teeth are omitted from a portion of its periphery, as shown at 109, and instead of gear-teeth a bearing-flange 110 is substituted, (see Fig. 16,) which is adapted to have bearing on the periphery of the shuttle at a point where the gear-teeth 82 are cut away. The purpose of this arrangement is to provide against rotation of the shuttle at the time when it is being raised from the wire after having wound the bobbin thereon, the parts being so associated that the needle ceases its rotation at the time the roller 107 carried by the gear-wheel 71, engages the upper side of the frame 91 to raise the block carrying the needle, so that the rotary movement of said gear-wheel necessary to raise said parts does not impart at that time a rotation to the needle. As each of the shuttles in turn enters the machine to assume an operative position therein the needle of each shuttle is supplied with a coiled bobbin of wire 111. (See Fig. 21.) There is sufficient wire in the bobbin to constitute the stay or woof wire to be woven into the fabric, and said wire is formed into a coil, as shown, which is mounted upon the end of the needle by securing the end of the coil under the hook 112, carried at the forward end of the needle and fastened in place by the screw 113.

In wrapping the bobbin or stay wire around the longitudinal wires of the fabric it is de-

Images