US4644A - Carpet-loom - Google Patents

Description

UNITED sTATEs PATENT oEEIoE.

WILLIAM SHERWOOD, OF RIDGEFIELD, CONNECTICUT;

CARPET-LOO1VL Specification of Letters Patent No. 4,644, dated July 20, 1846.

To all whom, t may concern Be it known that I, VILLIAM SHERwooD, of Ridgefield, in the county of Fairfield and State of Connecticut, have made certain new and useful improvements in looms fo-r weav ing ingrain carpets and other articles in which the filling requires frequent changes of two or more shuttles and which are actuated by steam or other motive power; and I do hereby declare that the following is a full and eXact description of my said improvements.

In the accompanying drawings I have represented a loom with its frame of wood such as is usually employed in the weaving of carpets; but vmy improvements may be added to looms having their frames of iron and differing in form from that represented.

Figure l is a perspective view of my loom taken from the back and one end thereof. Fig. 2 is an elevation of the opposite end and Fig. 3 a vertical section thereof from front to back; the other iigures show parts in detail, to be presently described.

In each of these figures where the same parts occur they are designated by the same letters of reference.

A is a shaft that occupies a situation in rear of the harness and runs in suitable bearings; it has on each end a crank B seen most distinctly in Fig. 2. A driving pulley E is also aiXed to this shaft which is shown as embraced by a belt 0 c. Vith the pulley E, is also connected the apparatus for stopping the loom and for throwing it into and out of gear in the ordinary way.

F is a pinion placed on one end of the shaft A which pinion gears into a wheel Gr, Fig. 2, that is affixed o-n the cam shaft G. The pinion F has usually eighteen teeth, and the wheel G which is two feet in diameter, one hundred and forty four teeth. The pins of the crank B pass through slots I) b made in auxiliary sword-pieces C C' that work on oint pins at their upper ends, and are connected to the lay by the rods D D; a a are friction rollers on the pins of the cranks B to enable them to work unobstructedly in the slots b, b, which have a curved form given to them as represented by which to retard the motion of the lay at the proper time so as to insure the Vreadyv action of the shuttles on the protection rod. The cam shaft G carries four cams lPI I-I H H" (Fig. 3) that alternately depress four treadles I connected in the usual l way with the machinery for forming the l iigures. Upon each of these treadles there is a shoe K which is broad enough to hold it down until the lay beats up twice, before the cam escapes fro-m it. With the treadles I, I connect four others (IL) which may be operated on by the feet of the tender, when 1t 1s necessary to get an openpick, lto mend the filling, or to change the colors.

I make the lay like such as have been heretofore employed except-ing in the following particulars. To give strength to the sword pieces C and the rocker D (Figs. 1 and l0) to which the sword pieces C are atv tached I make these parts of cast-iron; each of the sword pieces having an arm or elbow piece M extending from `1t and passing under the plates, or top timbers of theloom and then turning up perpedicularly on their outsides as represented to sustaina joint pin a on which the picker driver 'staves N N vibrate, these staves being connected at their lower ends with the picker drivers to be presently described.

The picker staves are to be acted upon by what I denominate knee-operators which are so constructed and combined with the lay and with the frame of the loom, as that they may be made' to throw any number of shut tles in succession from either end of the lay, and will also allow it to go back any desired number of times without throwing a shuttle.

On the inner side of each lay sword there is aHiXed a stud or joint piece 0 which sustains the lever P which I denominate the knee operator. The short end of rthis level' is about 3 inches long, and it is to be operated on by a jointed stop piece Q that is made to use and fall on a stand It to which it is attached by a joint pin, the stand R being yatliXed' to the plate of the loom. This` arrangement is in part shown in Figs. l, 4: and 10; in Fig. 4, the lever P and the stop-piece Q are shown as detached from the lay and from the frame of the loom. From the longer end of the lever P, a strap or cord P proceeds and yis made fast'to the picker staif as shown `at n Fig. l. As the lay passes back and brings the short endv of the lever P into lcontact with the stop Q the long end of said lever acting on a picker stati'I will throw a shuttle; but if the stop Q be raised above the knee operator P, the picker stavesf will remain at rest.; Vthe stops areto be raised and depressed in the following manner. At each end of the cam shaft G Fig. 5 there is a circular cam T each of which has on its periphery notches t, and upon these cams rest the guide levers U (Figs. 2, 3 and 5) that are hung by joint pins at their rear ends; an angular projection o on the under sides of these lcvers will fall into the notches t as the cams T revolve. From the fore ends of each of these levers there extends a lifting rod S, the upper end of which is shouldered and passes through a mortise in the stop-piece Q; as the cam shaft revolves the stop piece will be lifted while the angular piece e rests on the periphery of the cams T, but when itfalls into the notch t the stop pieces will fall so as to be brought into contact with the knee operator P, and a shuttle will be thrown as the lay moves back.

Should it be required to throw four shuttles in succession from each end of the lay, the cams T T must be placed on a shaftwhich has half the speed o-f the main cam 'f shaft.

Fig. l0 shows one end of the lay with its shuttle boxes V V two only being represented. W is the picker driver which consists of a cylindrical piece about three inches longand two inches in diameter, and through its center passes a stationary rod c o that is made fast to the lay at each of its ends; and does not rise with the shuttle boxes; the pickers e e run upon their proper rods which rise and fall with the shuttle boxes in the usual way; the rod upon which the driver W is placed stands about an inch and a quarter forward of the picker rods; that pickers e e project forward about an inch from their rods (Fig. 12) so that the drivers may act properly upon them, and they reach within about half an inch of the backof the box; the picker driver is to be drawn back in the same way in which double box pickers are usually drawn back as Fig. 15, B the pulley Z the lever and a the weight. The shuttle boxes are connected with, and operated upon by, the treadles which form the ground of the carpet in the ordinary way. At Fig. 12 five shuttle boxes are represented with two pickers acting in the same way.

I place the protection rod Figs. 1l and 13, CZ, upon the back of the lay with a finger 'y y, standing perpendioularly upon each end of the rod. Each finger has a lever one end of which runs through a hole in the upper end of the ngers k 7c, forming a joint, andl lies horizontally upon the top of the lay having a fulcrum pin 7" r near the center, and the outward ends c c are operated upon alternately by the springs b b b Fig. l2 in each shuttle box. The inward ends of said springs, a a a a is made fast to the back board of each box and near the other end is a-pin (Fig. 17, 0,) which goes through the back board and projects beyond it about half an inch when a shuttle is within the box Z) b Fig. 16. I make use of a spring in the usual way to keep the protection rod prepared to stop the loom when the lay beats up if it is not counteracted by a shuttle, but in order to allow the lay to beat up twice to each thread of the filling and in order also to prevent the protection rod from interfering with the shuttle boxes when they move I overpower the action of the spring by means of a weight the action of which is to be taken off by that of each of the treadles just before a shuttle is thrown.

In F ig.-6 e is a weight on the end of a lever e having a fulcrum pin at g inside of the plate of the loom. From this desc-ends a cord 71, the lower end of which draws upon a short iinger y' attached to the protection rod and projecting horizontally from it (Fig. l1 j) thereby counteracting the action of the spring ."'as above stated. A lever g Q crosses under said lever f at right angles about one inch from the fulcrum pin g, and upon the side of it which is nearest to the weight. One end of the lever turns upon a oint pin at w and' the other end is connected by two cords s" s one to that part of the ligure machine which raises the ground and the other to that part which raises the figure of the'carpet. The action of the weight is thereby taken oil just before a shuttle is thrown and allows the protection rod to act freely upon said pin in the shuttle boxes at the proper time.

The yarn beam 7L (Figs. l and 3) rests upon a roller z', its gudgeons passing into slots in the posts of the frame so as to allow it to rise or fall according to the quantity of yarn upon it; from this yarn beam the yarn passes under a piece of timber Z (Fig. 3) that extends from side to side of the loom thence over a piece m then under another piece n situated as represented, and over as many more pieces if necessary before it goes over the dead beam to the harness by which arrangement the warp is kept at a proper degree of tension and the yarn beam is prevented from slipping on the roller when the yarn is tight enough to weave.

To give the proper feed so as to deliver the yarn in such quantity as will suit any uniform number of picks to an inch I put a ratchet wheel q on the upper end of a shaft p, (Figs. l and 8) which wheel is acted on by a feed hand o operated by the rocker D Fig. l, the wheel Q will consequently be turned to the distance of one notch every time the rocker vibrates, and by adapting ratchet wheels varying in the number of teeth any required feed may be obtained. On the lower end of the shaft 77 there is an endless screw o that gears into a toothed pinion 0 on the roller z' thus giving motion to the yarn beam.

Each figure of a carpet has an equal number of threads of filling and in order to make them match it is necessary that each thread of the filling be it coarse or fine should occupy an equal space, and by connecting the endless screw with the roller which operates the yarn beam and turning the screw an equal distance at every vibration of the lay that effect is produced which cannot be done in the ordinary way.

The situation of the cloth beam is shown at s (Fig. 3.). Upon each of its ends there is a ratchet wheel t; a cloth Winder w is attached to a lever w the outer end of which lever embraces the gudgeons of the cloth beam and its other-end is operated on by a cam on the cam shaft Gr. This arrangenient is shown most distinctly in Fig. 9'

where J, J, shows the double cam that acts on the lever fw. The cams J are outside of the cams T, that operates the stops of the knee operators. The lever U, belonging to the cam T is not shown in F ig. 9. A plank (Fig. 3) is made to press upon the cloth beam; this plank has a pin in each of its ends that enters into a slotor groove g/ in the lever w in which the plank a" may slide back and forth; it may be drawn against the cloth beam by means of a'weight and cord z 2. v

Having thus fully described the improvewith the protection rod, so as to allow the lay to give a second stroke to each thread of filling; said parts consisting principally of the weight e on the end of the lever e (Fig. 6 of the accompanying drawings) said lever acting upon the cord fr that draws upon a. finger j attached to the protection rod whereby the weight is made to overpower the action of the protection springl and the lay may consequently be made to beat up without the intervention of the shuttle excepting when the weight is lifted by the treadles which lifting takes place just before a shuttle is thrown, and 'this combination I claim whether the respective parts be arranged precisely as herein set forth or in any other that is substantially the same inits operation an'd result.

wWILLIAM SHERWOOD.

Vitnesses:

CHAS. H. RANDALL, SMITH B. KEELER.

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