US845345A - Shuttle-motion for looms. - Google Patents

Description

PATENTED FEB. 26, 1907.

J. A. GENDRON. SHUTTLE MOTION FOR LOOMS.

APPLICATION FILED JULY 28, 1905.

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J. A. GBNDRON. SHUTTLE MOTION FOR LOOMSQ APPLICATION FILED JULYZB, 1905.

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PATENTED FEB. 26, 1907,

J. A. GENDRON.

SHUTTLE MOTION FOR LOOMS.

APPLIGATIONI'ILED JULY 28, 1905.

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v UNITED STATES PATENT orrien. JOSEPH A. GENDROFOF NASIEX, NEW HAMPSHIRE.

SHUTTLE-MOTION FOR LOOIVIS.

Specification of Letters Patent.

Patented Feb. 26, 1907.

To all w/wm it may concern:

Be it known that I, JosEPH A. GENnRoN, of Nashua, in the county of Hillsboro and State of-New Hampshire, have invented certainnew and useful Improvements in Shuttle- Motions for Looms, of which the following is a specification.

This invention relates to looms, and has particular reference to that type in which the shuttle is given a positive movement on the lay, being pushed partly across the lay between the warp-threads by one carrier mechanism or shuttle-earn ing slide and drawn the balance of the disliance by another carrier mechanism or shuttle-carrying slide, the shuttle being transferred-from one carrier to the other. In such looms means are provided for. alternately opening and closing the jaws or fingers which are carried by the slides.

One of the objects of my invention is to provide simple connections which will cause the shuttle-carrying slides to be reciprocated by the movement of the lay.

Another object of the invention is to provide a loom of this character in which part of the necessary reciprocating movements of the shuttle will be produced by movement of the shuttle-carriers themselves and the rest of the movements of the shuttle produced by movements of the shuttle fingers to and from the carriers, all of these movements being positive.

Another object of the invention is to provide automatic means for causing the shuttlegrasping jaws or fingers to close on the shuttle alternately.

Other objects of the invention are to sim plify various parts of a loom of this character, as will be pointed out hereinafter.

To these ends the invention consists in the construction and combination of parts, substantially as hereinafter described and claimed. 4

Of the accompanying drawings, Figure 1 represents a plan view of a suflicient portion of a loom to illustrate my present invention. Fig. 2 represents a front elevation thereof, partly broken away. Fig. 3 is a view similar to Fig. 1, showing some of the parts of the loom in a different position. Figs. 4 and 5 are detail elevations of the cam-operating device, enlarged, the actuatiLg-pawl bein shown in different positions. Fig. 6 is a detai end elevation, partly in section, of the parts in the position in which they are shown in Fig. 1. Fig. 7 is a view similar to Fig. 6, but showing the parts in a difl'erent position. Fig. 8 represents an enlarged detail elevation from the inside of the lay of a carrier and its adjacent parts. Fig. 9 represents a vertical section through Fig. 8 looking to the right of said figure. Fig. 10 is a view similar to Fig. 8, showing the parts in a different position. Fig. 11 is a plan view, partly broken out, of the parts shown in Fig. 10. Fig. 12 is a detail plan view of the cam-plate which actuates the shuttle-grasping fingers.

Similar reference characters indicate the same or similar parts throughout the several views.

The frame 20, breast-beam 21, lay 22,

swords 23, pivoted at 24, the crank-shaft 25,

and the links 26 are represented as of ordinary construction and need not be described in detail herein. Briefly stated, the rotation of the crank-shaft oscillates the lay between the position represented in Figs. 1 and 6 and the position represented in Figs. 3 and 7.

The lay 22 is formed with a way or channel 27, which is best shown in Figs. 8 and 9, the lay having, preferably, also top plates 28 to receive the wear of the shuttle-carrier 29, which reciprocates thereon. An arm 30, projectin downward from the carrier and having a ateral arm extending out from the channel or way 27 ,is provided with cars 31 to support a pin 32. two parts being swiveled together, as shown in Fig. 1, is pivotally connected with the pin 32 and at the other end is pivotally connected with one end of an elbow-lever 34, pivoted at 35 to the breast beam. The other arm of the elbow-lever is connected by a link 36 with the pivot-bracket 37, secured to the lay 22. It will be understood by A two-part link 33, the

comparing igs. 1 and 3 that as the lay moves toward and from the breast-beam the links 36 cause the elbow-levers 34 to swing, so as to operate through the links 33 to slide the carriers toward and from each other on the lay. The carriers simultaneously approach the mid-length of the lay and simultaneously retreat therefrom toward the ends, these motions of the carriers being obtained .solely by the movements of the lay. These movements of the carriers are positive, and the connections are such that the friction is very slight.

To grasp the shuttle alternately at its op posite ends and then release it, I provide each carrier with yielding extensions or fingers 38. These extensions or fingers are preferably formed by bending a strip of resilient metal to aU shape, as indicated in Fig. 11, the bottom of the U being embraced by the forward ends of the side plates of. the

e hereinafter described. They are so formed as to have a normal tendency to spring apart, as indicated at the right-hand endof the shuttle 39 in Fig. 1. Each extension 38 is formed with an inwardly-projecting lug 40, (see Figs. 10 and 11,) and these ugs. project over and embrace inclined tongues 41, projecting from the front edge of a plate 42, which is mounted so as to have a slight reciprocal movement relatively to the shuttle-fingers 38 and their lugs 40. Said plate 42 is formed with a lug 43, to which is pivoted one end of a link 44, the other end being pivotally connected with an arm 45, said arm 45 having a pin 46, which projects out through a slot 47, (see Figs. 2 and 11,) formed in one side of the carrier. The members 44 and 45 practically constitute a jointed link for actuating the plate 42, as hereinafter described. The shape of the plate 42 and its inclined tongues 41 is best indicated in Fig. 12. It will be-readily un derstood that by reciprocating the jointed link 44 45, so as to slide the plate 42 back and forth, the inclined sides of the tongues 41 will cause the fingers 38 to approach each other and grasp the shuttle 39 when said plate is moved forward, and when said plate is retracted the tendency of the tongues 38 to spring apart, as has been described, will cause said fingers to open and release the shuttle.

I shall now proceed to describe the mechanism for giving the two plates 42 their necessary slight reciprocal movements above referred to. A reciprocating bar 48, having slots 49, mounted on guide-pins 50, projecting from the side of the lay 22, is formed with a oentraldepending arm 51, having a pin or roll 52, (see dotted lines in Fig. 2,) said pin or roll being acted upon by a cam 68, which will be hereinafter described. The two ends of the bar 48 are alike, and I shall describe the structure at one end. A tappet-arm 53 projects upward, and a lower arm 54 projects a short distance horizontally and carries a pin 55, engaging a slot 56 in a lever 57, which is r cured to said shaft, said ed to be engaged 1 and 5,) pivoted to t designed simply to nient of the cam.

scribe, this cam during t movement which actuate t k or snapping I1'..OV actuate the levers given a step pivoted at 58 to the lay. A yielding extension 59 of the lever 57 is pivoted to said lever 57 at 60 and is formed with an car 61, the under side of which is engaged by the free end of a leaf-spring 62, which is secured to an ear 63 of the lever 57. This structure enables the extension 59 to yield in one direction, but not in the other, because its ear 61 extends over the edge of the lever 57. (See cam reans of an actu connected with th Figs. 1 and 2.) As shown at the left of Fig. 2, the upper end of the extension 59 18 shown d its extension ved from their in doing so to moved 'it from gure the said lever an are supposed other limit of aged the pin 46 and and end of its slot 47 it is shown in said fi ement of the that end of the lay h caused to draw the fi contact with the sh the lever 57 at the the right in Fig. 2)

0 have just mo as been advanced and 38 at that end in At the same time vn in Fig. 1 to ore when the I in Fig. 2 the 39 toward th position sho\ position shown ake the shuttle moves from the that shown in As shown most ole has another use that dinal slots 66 Short pins 67 proje strip which forns t base of the U tl vent tie fingers 3 rocating movements relati In other words, the pins de along the slots 66 an the pin 64 sh in their horiz t e fingers 38 e cam 68, which d reciprocates th ontal plane.

ngages the pinor roll bar 48, is mounted through a bearing 0 swing on the pivot e other end of the hereto a compound peripheral and, like them, pivoted t or fulcrum rod 24. Th cam-shaft has secured t ratchet having face-teet by a pawl 7 he strut 71. prevent retrograde presently dese portions of its he bar 48 is given ement, so that it 57 smartly. The by-step movement ating-pawl 7 6, pivotally upper end of a plunger 5, (see Figs. 4

77, a suitable spring 78 being employed to cause the pawl 76 to engage the face-teeth 72 of the compound ratchet, as represented in Fig; 7. The -means for actuating the plunger 77 I shall presently describe. In order to prevent the upward movement of the pawl 76 from actuating the cam-shaft too far, the upper end of the plunger is provided with a laterally-extending pin 79 a which as the pawl reaches its upward extreme of movement stands in the path of one of the peripheral teeth 73 of the compound ratchet, so as to act as an abutment that will be engaged by such tooth to prevent excessive actuation of the cam-shaft.

The plunger 77 is mounted to reciprocate in bearings formed in brackets 80, which proj ect from the strut 71, the lower bracket be ing formed with a vertical slot 81, into which a pin 82 projects from the plunger 77 to limit the vertical movements of the plunger by the length of said slot. (See Figs. 2, 6, and 7.) Secured to the frame 20 are brackets 83, having secured to their outer ends strips comprising an inclined portion 84 and an upright portion 85. The inclined portion forms a cam and the upright portion a stop, as will be presently described. Passing through the lower end of the plun er 7 7 is a pin 86, having freely mounted thereon trip-plates 87, which are adapted to engage the under side of the lower stationary bracket 80. These trip-plates 87 are so located as to oscillate between the brackets 83 and the cam and stop strips. As shown, the said tripplates are pivotally mounted at one end on the pin 86, and at the outer end of each trip- .plate is a pin or roller 88, which projects into the space between the cam 84 and the stop 85.

A spring 89, coiled about the plunger 77 and bearing at its lower end on the upper surface of the lower bracket and at its upper end against a stop-collar 90, secured on the plunger 77, has a normal tendency to throw the plunger and its pawl 76 from the position shown in Fig. 7 to the position shown in Fig. 6. With the parts in the position shown in Fig. 7 the pin 86 and the point where the free ends of the triplates bear against the under surface of the ower bracket 80 are in alinenient, so that said trip-plates serve to hold the plunger in its lower position; but when the lay moves toward the position shown in Fig. 6 the rollers 88 engage the inner surface of the stops 85 and are held thereby, while a slight further movement of the lay in the same direction carries the pin 86 far enough to the left so that the tension of the spring 89 will throw the plunger sharply upward, snapping the trip-plates 87 to the position substantially as shown in Fig. 6. This movement gives the cam 68 a sudden quarter-n:ovement, enough to shift the bar 48 sharply in the manner and for the purpose hereinbefore described. Upon the return 3 movement of the lay the two rollers 88 engage the inclines 84 and are held thereby, so that continued moverr ent of the lay in the same direction carries the pin 86 downward, the upper surfaces of the trip-plates 87 riding under the lower bracket 80 and the rollers 88 riding down the inclines 84, thus lowering the plunger and compressing the spring 89 and bringing the parts again to the position represented in Fig. 7 ready for a repetition of the operation just described.

I shall now describe the means which provide for withdrawing the shuttle 39 into either of the carriers 29. (See particularly Figs. 8, 9, 10, and 11.) As has been de scribed, the pin 64 rides along the slots 66 in the carrier, and said pin passes through the sides of the shuttle-grasping yoke. Pivotally connected with this same pin 64 is a link 91, having its other end pivotally connected with an arm 92 of a rock-shaft 93, mounted in a bearing 94, formed in the side of the carrier. The outer end of the rock-shaft 93 has secured thereto an arm 95, having a pin or roll 96 at its end, said pin or roll entering a slot 97, formed in a bracket 98, which is secured to the lay The arm 92 is provided with a lateral lug or projection 99, which underlies a similar lug or projection 100, carried by the arm 45 The slotted bracket 98 forms a guide which is followed by the roll 96 of the rockshaft arm 95. hen the swinging movement of the lay causes the carriers to separate or move away from each other, the operation of the device just described at each end of the lay is as follows: As the carrier moves from the position shown in Fig. 10 toward the position shown in Fig. 8 the roll 96, following the guide-slot 97, turns the arm 92 upward, and said arm through the link 91, which is connected to the pin 64, draws the shuttle-grasping yoke or jaws into the carrier, thereby increasing the movement of the shuttle to a greater extent than would he imparted by the levers 34 and links 33 and 36 alone. The first upward movement of the arm 92 causes its lug 99 to engage the lug 100 cf the arm 45, so that said arm 45 and the link 44 double up simultaneously with the movements of the arm 92 and link 91. Otherwise the arm 45 and link 44 would oppose the movement of the shuttle-fingers into the carrier. It is to be borne in mind that the pin 64, riding along the slots 66, aids in the movements just described. On the advance movement of the carrier the roller 96, riding up the curved portion of the slot 97, causes the arm 92 to be thrown downward or toward the left from Fig. 8, pushing on the link 91 and the pin 64, and thereby projecting the shuttle fingers or jaws from the carrier. The plate 42 is moved forward by the movements of at the same time by the operation of the bar 48 and its adjuncts, as above described, and the link 44 and the arm 45 are at the same time drawn down to a horizontal plane, as represented in Fig. 10, owing to the connection of the link 44 with said plate.

It is to be understood, of course, that the timing of the movements of the several parts is such that the operations of the dif ferent connections will be in their proper order or relation to accomplish the function of carrying the shuttle outward from one carrier toward the opposite carrier, releasing it from one linger-carrying slide as the fingers of the other slide grasp it and the shuttle being then drawn to the other end of the lay by the last-mentioned slide, the return of the shuttle being eil'ected in the same manner.

To prevent the shuttle from oscillating in a vertical plane when grasped and being moved by the fingers 38, the latter may be provided with lugs or flanges 101 to engage the upper and lower walls of the shuttle, and thereby steady it during its rapid movements on the lay.

In the operation of the loom the movements of the lay toward and from the breastbeam in the usual manner act, through the levers 34 and the links 33 and 36, to shift the sluittle-carriers toward and from the midle gth of the lay. The fingers or extensions 38 of the shuttle-carriers are alternately contracted b y the operation of the plates 42 in the manner hereiiibefore described, so that the shuttle is passed from one carrier to the other. After either pair of fingers or extensions 38 has grasped the shuttle and the car rier is moved liackward the shuttle-grasping yoke, which comprises the fingers 38, is withdrawn into the carrier, so as to give the shuttle a greater total length of movement than would be imparted by the levers 34 and links 33 and 36 alone, unless said levers and links were made of a great length By employing the mechanism which withdraws the sl'1uttlegraspingfingers into the shuttle-car rier I am enabled to employ shorter levers 34 and link (lC'ili'lOiiilCflS with the lay than would OilllGlWVlSG be required.

Having now described my invention, what I claim is l. A positive-shuttie-motion loom carriers mounted upon the lay, connections between the lay and a stationary part of the loom whereby the carriers are reciprocated the lay, and means for withdrawing a shuttle alternately into the said-carriers and projecting it therefrom.

2. A positivc-sbrittle-motion loom having carriers mounted upon the lay, connections between the lay and a stationary part of the loom whereby the carriers are reciprocated by the movements of the lay, said carriers having automatically-operating jaws or finhaving i l l gers to alternately grasp and release the shuttle, and means for actuating said fingers to cause them to alternately withdraw a shuttle into the carriers and project it thererom.

3. In a loom of the character described, the combination with a carrier movable on the lay, of yielding extensions movable relatively to the carrier and having their outer ends normally tending to open, and means or automatically and positively closing said yielding extensions.

4. In a loom of the character described, the combination with the lay and a carrier movable longitudinally thereof, of a U- shaped member slidably mounted in the carrier and having its free ends adapted to grasp a shuttle, the sides of said U-shaped member being formed with inwardly-projecting lugs, a plate having beveled tongues engaging said lugs, and means for reciprocating said plate relatively to the carrier.

5. In a loom of the character described, the combination with theglay and a carrier movable longitudinally thereof, of a U- shaped member slidably mounted in the carrier and having its free ends adapted to grasp a shuttle, the sides of said Ushaped member being formed with inwardly-projecting lugs, a plate having beveled tongues engaging said lugs, means for reciprocating said plate relatively to the carrier, and means for with drawing the said U-shaped member and a shuttle grasped thereby into the carrier.

In a loom of the character described, the combination with a carrier movable on the lay, and having a slot, a U-shaped member having extensions adapted to grasp the shuttle, a plate movable relatively to said U- shapcd member and having connections with the sides thereof to contract the latter, a jointed link connected with said late and having a pin projecting through tlie slot of the carrier, and means for actuating said pr0- jecting pin lengthwise of the carrier.

7. In a loom of the character described, the combination with a bar mounted on said lay, shuttle-grasping fingers actuated by said bar, a cam for reciprocating the bar, and a pawl and means for actuating said pawl to impart a quick movement to said cam.

8. In a loom of the character described, the combination with a bar mounted to slide on the lay, levers connected with said bar to be oscillated thereby, means-for reciprocating the bar, and shuttle-controlling fingers having connections including pins located in the path of movement of the said levers.

9. In a loom of the character described, the combination with a bar mounted to slide on the lay, levers connected with said bar to be oscillated thereby, means for reciprocating the bar, and shuttle-controlling fingers having connections including pins located in the path of movement of the said levers, the said ICIO levers being jointed and having their outer parts yielding substantially as and for the purpose set forth.

10. In a loom of the character described, the combination with the lay and shuttlegrasping fingers thereon, of a bar mounted on the lay and having connections for controlling the shuttle-grasping fingers, a cam for reciprocating said bar, a ratchet connected to the shaft of said cam, a pawl for actuating the ratchet, and means for suddenly actuating the pawl.

11. In a 100111 of the character described, the combination with the lay and shuttlegrasping fingers thereon, of a bar mounted on the lay and having connections for controlling the shuttle-grasping fingers, a cam for reciprocating said bar, a compound ratchet carried by the shaft of said cam, a pawl for engaging one set of teeth of the ratchet, said pawl having a stop adapted to be interposed in the path of movement of the other set of l teeth of the ratchet, and means for reciprocating said pawl.

12. In a loom of the character described, the combination with the lay, of a shaft mounted thereon, said shaft having a cam at one end and a ratchet at the other end, shuttle-grasping fingers on the lay, means controlled by said cam for actuating the shuttlegrasping fingers, a plunger mounted in bearings connected with the lay and having a pawl to engage said ratchet, trip-plates connected with the plunger and adapted to actuate the same in one direction, a spring for actuating the plunger in the other direction, and means for oscillating the trip-plates according to movements of the lay.

13. I11 a loom of the character described, the combination with the lay, of carriers movable longitudinally thereof, shuttlegrasping fingers mounted in said carriers, jointed links for retractng and projecting said fingers relatively to the carriers and means for actuating said arms.

14. In a loom of the character described, the'combination with brackets secured to the lay said brackets having curved slots, of carriers movable on the lay, each carrier having a rock-shaft provided with an arm engaging a curved slot, said rock-shaft having also a jointed link, and shuttle-grasping fingers connected with said jointed link, whereby movements of the carrier on the lay will automatically move the shuttle-fingers relatively to the carriers.

In testimony whereof I have affixed my signature in presence of two witnesses.

JOSEPH A. GENDRON. Witnesses:

A. W. HARRISON, M. B. MAY.

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