US352783A

US352783A - Shuttle box operating mechanism for looms

Info

Publication number: US352783A
Authority: US
Publication date: 1886-11-16
Anticipated expiration: 1903-11-16

Description

(No Model.) I zsheets sheet 1.

W. SHAW.

SHUTTLE BOX OPERATING MECHANISM FOR LOOMS.

No. 352,783. Patented Nov. 16, 1886.

FIG. I.

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(No Model.) 2Sheets-Shet 2.

W. SHAW. SHUTTLE BOX OPERATING MECHANISM FOR LOOMS.

" No. 352,783. 7 Patented Nov. 16 1886.

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UNITE STATES" PATENT OFFICE.

WRIGHT SHAW, OF BREDBUBY, COUNTY OF CHESTER ENGLAND.

ISHUTTLE-BOX-OPERATING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 352,783, dated November 16, 1886.

Application filed September I, 1884. Serial No. 141,939. (No model.) Patented in England May 1, 1884, No. 7,073.

checked fabrics illustrated and described in the I British Patent No. 1,579 of 1857, granted to' myself and others.

The main objectof my present invention is to simplify and economize the construction of the drop-box motion and to bring the principal working parts thereof within easyreach of the hand and eye of the weaver, as well as to economize space.

In the accompanying drawings, Figure 1 is an end elevation with the crank-shaft and part my improvements; and Fig. 6 is an enlargedsectional plan View of another part of my improvements.

In some of its principal parts and operation the present machine is precisely similar to that'- described and shown in the above-mentioned British Patent No. 1,579 of 1857, and I will first brieflydescribe the main parts which are similar in the two machines.

0 is the crank-shaft, and E thevibratin g lay which is connected to the cranks on the shaft 0 by the usual connecting-rods, O.

F represents the drop -boxes, (four being illustrated in the present instance,) supported on the lay by the upright rod 7, carrying at its lower end a rack, which is normally kept in gear with its pinion i by a spring, 7. In the present instance this spring is a spiral one, acting through a sliding rod,7 ,in a bracket, 7 Figs. 1 and 6 but in the British patent a curved springis shown for the samepurpose. As described and shown in said patent, the pinion 1' is secured to the pinion, (l of the patent.)

with which either of the opposite rack-legs of the boot-jack h can be throwninto gear; or both legs may be thrown out of gear with said pinion, (leaving the latter midway between the two,) according to the movement desired to be imparted to the drop-boxes F threugh the pinion i and rod 7. The boot-jack is pivoted to the outer end of a lever, 1, pivoted at 6.0 1 to the frame of the machine, and adapted to be acted on by a tappet or tappets, 4 4, Figs. 1 and 2, on the cam or tappet shaft D of the machine, the lever 1 being provided with a bowl, 2, for the action of the tappets or earns g to raise and lower the boot-jack h, and consequently the drop-boxes F.

The deyices for controlling the position of the boot-jack to move it into and out of gear with its pinion and for moving the tappet 4 into or out of position to act on the bowl of the lever l are controlled by a pattern-chain, and in the Patent No.'1,579 of 1857 these devices are shown and described as being at the lower part of the frame of the machine, along- 7 side the boot-j ack itself, the long pattern-chain passing up to the top of the machine over two pegged cylindersin addition to the pattern-cylinder. This construction, however, is inconvenient, andin order to render the devices easy of access to the weaver I place the devices at the upper part of the frame, and so construct them as to permit of the use of a short patternclfain and to dispense with the extra pegged cylinders. 8 5

The pattern-cylinder a is carried by the vibrating-bracket n, which is mounted on the pivot, 12. on the frame, and is adjustably connected by a bolt, 19, to the arm 18 on the same pivot n. Vibrating motion is imparted to the bracket 42 from the cam 11, Fig. 5, on the tappet-shaft D acting on the lever 12 on the shaft 12, as hereinafter described. This shaft 12 also carries the arm 16, Fig. 1, which is connected to the arm 18 by the rod 17. 95

The pattern-cylinder a has preferably eight faces, as shown in Figs-1 and 4, and has an axis, Z, which is free to turn in the upper end of the vibrating bracket n, and which carries the usual spider-wheel, r, for engagementwith the pawl 8, Figs. 1 and 4, pivoted to some fixed part of the frame. By this means the pattern-cylinder will be turned to bring a new section of the patternchain into position to ICO act on the rods b c d, unless the fixed stop q, coming into contact with the pins 10 on a supplementary disk, 70, as hereinafter explained, prevents the bracket from coming up far enough for the hook s to engage with the next peg of the spider r. l

The rods 11 0 cl are similar in constructio and operation to those described in the British patent, the two outer ones being pivoted to the opposite ends of the swivel bracket or arm e at the top of the vertical shaft f, while the central sliding rod, 0, has a cam portion, 0', Fig. 4, acting on an arm, 15, on the upper end of a tubular shaft, a, free to turn on the rod f. All three rods 5 c d are guided in a bar, g, on the frame of the loom. The vertical shaft f is mounted in suitable bearings in the frame of the machine, and has fixed to its lower end an arm, 9, whichcarries a link, 9, having a notched end, as shown in Fig. 2, to engage with a rib on the boot-jack h, as described in my former British patent. The movement imparted to either of the rods 1) or d by the pattern chain '6 is thus transmitted by the shaft f, arm 9, and link 9 to the boot-jack to throw it into or out of gear with its pinion, to enable the drop-boxes to be operated or not from the lever l, which is controlled by the tappets or cams 4 onthe cam-shaft.

The tubular shaft 10 carries at its lower end a fork, 3, to act on the tappet 4, which can be moved longitudinally on the shaft D, so that when the central rod, 0, is pushed in by ablank on the pattern-card its cam c, acting on the arm 25, partially turns the tubular shaft u, and

by the fork 3 moves the double lift cam or tappet 4 into engagement with the cam 4, to act on the lever 1, as described in my former British patent.

In order to economize the pattern-chain, I provide devices whereby the pattern-cylinder a may be retained in position to repeat for, say, four, six, or any desired number of picks.

On the axis Z, but free to turn thereon, is a disk, k, carrying a number of pegs, m m, which, as the bracket n moves back and forth, come into engagement with a pawl or hook, 0, pivoted to the frame, Figs. 3 and 4:. By this means an intermittent rotary motion is imparted to the disk Z. On the opposite face of the disk Z are provided removable screw-pins 9, Figs. 3 and 4., the number and relative positions of which will vary with the desired pattern to be woven.

On the frame is a fixed stop, q, in such a position that as one of the pins 19 comes into line therewith in the rotation of the disk Z the pin will come into contact with the stop q, as shown in Figs. 3 and 4, as the vibrating bracket n moves up toward it. This stop will thus prevent the bracket 1 from coming far enough forward to permit the hook or pawl s to engage with the pegs of the spider r to turn the pattern-cylinder. By this means the patterncylinder may be retained in the same position, and the pattern may be consequently repeated for any number of picks, as long as there are pins 19 to present themselves to the stop q,- butin the absence of a pin 19 to come into contact with the said stop as the disk It is rotated, the bracket n,with the pattern-cylinder,

whenever one of the stop-pins p comes into.

contact with the stop q, the cam 11, Fig. 5, which actuates the bracket through the devices before alluded to, is made agrooved cam, and a yielding bowl, 13, on the lever 12 travels in this groove. The bowl 13 is mounted in a bearing-block, 14:, free to slide upward in ways in the lever nearly at right angles to the length of the latter. A spring, 15, presses on the top of the bowl or bearing-block, keeping it normally to its lowest position in the lever; but when the movement of the vibrating bracket a is arrested by the stop q, as before described, the spring 15 will allow the bowl 13 to yield upward, so that the cam 11 can continue its movement without moving the le- -ver 12. The same action is produced when the end of the lever 12 is held down by any other cause-as, for instance, by the ordinary action ofthe weft-fork motion in the event of the weft-thread breaking, as described in my former British patent.

The tubular shaft a, which carries the fork 3 to throw the cam or tappet 4: into or out of action, also carries an arm, 11, connected by a link, w, to a lever, m, Fig. 2, pivoted to the frame. This lever carries two short platesprings, y and z, to act as yielding stops on the boot-jack lever 1, to prevent jumping of the shuttle-boxes when the machine is running at a high speed. When the two outer rods, b and d, are working the single lift, only one of these springs, z, acts on the lever 1, nearly over the bowl 2; but when the central rod, 0, comes into action for the double lift, the movement of the tubular shaft u throws the spring 2 clear of the lever and throws the spring-stop y over the lever 1 at a point farther away from the fulcrum of the latter, so as to work with an increased pressure on a longer leverage.

In my former British patent I have described the drop-boxes as supported by a single coiled wire spring connected at one end to the lay and at the other to the upright rod which car ries the drop-box; but in order to obtain a very long spring and a consequent minimum of action of each individual coil, I provide a spring in two parts, 5 5, united by a cord or strap, 8,

which passes over a pulley, 20. The opposite as acting on the spring which presses the rack of the drop-box rod into contact with its pinion. In the present case, however, Iprovide on the upright rack 7 a projecting flange, 9, as, shown in the enlarged plan, Fig. 6, and against this a stud or projection, 10',, on the rack-handle 10 acts to throw the rack 7 out of gear with its pinion i when it is desired to raise or lower the shuttle boxes by hand. If preferred, this rack-handle may be made in the form of a treadle to be moved by the foot, so as to have both the weavers hands at liberty to. work the shuttle-boxes.

I claim as my invention- 1. The combination of the pattern-cylinder a and means for vibrating the same, the three rods b e d, and pivoted arm 6, connecting the two outer rods, the pattern-cylinder and rods being at the top of the loom, with the dropboxes, boot-jack, and its pinion and connecting devices, substantially as set forth, whereby the boot-jack controls the drop-boxes, lever carrying the boot jack, lifting mechanism therefor, and devices, substantially as specified, intermediate of the boot'jaek and lever and rods b d, whereby the latter control the boot-jack, all substantially as described.

2. The combination of the pattern-cylinder, carrying-bracket, and means for vibrating the latter, with a. fixed stop, q, a spider, r, on the cylinder, a loose pegged disk, is, carrying removable pins p,'and pawls or hooks s 0, to engage with the spider and pegged disk, all substantially as specified.

3. The combination of the pattern-cylinder and-vibrating devices therefor, sliding rod 0, tubular shaft a, arm 1. on one end ofsaid shaft and fork 3 at the other, with cam-shaft, tappets or cams thereon, lever 1, boot-jack h, dropboxes, and devices, substantially as set forth, connecting the said boot-jack and drop-boxes, all substantially as specified.

4. The combination'of the pattern-cylinder and vibrating mechanism, shaft u, and intermediate devices, as described, whereby the said shaft is partially turned, with the arm 0 on the shaft, link to, and spring-carrying lever x, lever 1, and operating devices, the dropboxes, and devices connectingthem with said lever, all substantially as set forth.

5. The combination of the pattern-cylinder and bracket and stopping devices therefor, a shaft, 12, and devices connecting the shaft to the cylinder-bracket, with a lever, 12, on the shaft 12, a movable bearing-block on the lever, a bowl in the said block, a spring, 15, and a grooved cam, 11, and cam-shaft, all substantially as set forth.

6. The combination of the drop-boxes, their supporting-rod, and connecting-rack having a flange, 9, with a pinion and devices, substantiallyas described, to operate the pinion, a spring to keep the rack ingear with its pinion, and a handle, 10, having a projection to act on the flange of the rack, as described.

7. The combination of the lay, drop-boxes, andcsupporting-rod with a two-part balancing-spring connected at one end to a fixture and at the other end to the rod, connectingstrap 8, and a pnlley, .20, over which the strap passes,'all substantially as set forth;

In testimony whereof Ihave signed my name to this specification in the presence of two subscribing witnesses.

WRIGHT SHAW. Witnesses:

GEORGE DAIRES, JNo. HUGHES.