an anti-friction roller, bearing upon the peripheries of excentric cams or heart wheels o, o, fixed upon a small shaft mounted at the back of the legs or swords of the lathe, as shown at fig. 5.

These heart wheels or cams o, o, are made to revolve through the agency of a ratchet wheel p, fixed on the same shaft, which ratchet wheel is acted upon by a click q, attached to a cross rail on the frame of the loom, as shown in fig. 4; the vibrating movements of the lathe causing the click, at every stroke of the lathe, to drive the ratchet wheel p, one tooth forward, and thus, by the gradual rotary movements of the cams, to raise and depress the rods n, n, and hence to give a slow up and down movement to the boxes a, a, for the purpose above stated.

The nebs of the forceps close by a spring r, see fig. 6, forming the tail of one of the chaps; and they are opened by a tumbling piece s, turning on a pin under the tail of the lower chap, as shown in the detached fig. 6, the nebs being guarded by a plate behind. When the forceps are projected across the shuttle race the nebs are open, the tumbling pieces s, having been placed erect, as in fig. 6, by striking as the forceps receded against a stud or small finger t, fixed at the back of the slay, as shown in fig. 5; but when the open nebs of the forceps have entered the bristle box, another finger v, also fixed at the back of the slay, forces the tumbling piece s, from under the tail of the forceps, as shown by dots in fig. 6, and thereby allows the nebs to close and hold fast the bristle. The receding of the forceps now causes the bristle held in the chaps to be drawn between the open shreds of the warp; and when the forceps have nearly reached the end of their sliding movement, the tail or extremity of the lower chap strikes against a stud u,

which opens the chaps, and allows the bristle to drop out and occupy the place of weft. The slay now being advanced, beats up the weft, and the bristle becomes interwoven or incorporated into the fabric of the web.

In order to suspend the delivery of the bristles when a sufficient length has been woven to form one stiffener or stock, a pair of cam wheels w, see figs. 1, 2, and 3, are mounted at the ends of the shaft of the work beam c. The peripheries of these cams w, revolve against the upper ends of levers x, x, mounted on studs fixed in the side frames of the loom. To that one of the levers x, shown in fig. 3, an arm y, is affixed, the reverse end of which arm is connected to a bell-crank lever z, mounted at the side of the frame, as shown in fig. 1. The upper end of this bell-crank lever %, is attached to a spring arm a, see fig. 3, which acts upon a clutch rod b, sliding in the hollow axle of the tappet wheel m. This clutch rod is connected to a clutch cam c, (fig. 2,) on the same shaft; one portion of which clutch cam is fixed to the shaft, the other portion slides upon it, and thereby forms either a straight or a zigzag groove, for the guidance of a clutch lever d. This clutch lever turns upon a fulcrum pin in a bracket or arm e, extending from the frame, the one end of the lever d, having a stud, which works in the groove of the cam c, the other end having a fork, acting upon a slider or clutch f, upon the tappet shaft G. When the end of the lever x, falls into the notch of the cam w, the clutch cam c, is drawn into the situation which forms a straight groove for the stud of the lever d, to act in, the loom then produces plain work; but when the cylindrical part of the cam w, acts against the lever x, then the lever x, is forced back, and the clutch cam slidden so as to form a zigzag groove for the stud of the lever d, to work in; the reverse end of this lever is

thereby made to slide the clutch f, on the tappet shaft G, and to move the tappets g, out of action which before worked the pecker levers; hence the action of the shuttle is suspended, and the forceps alone draw the bristles for weft. If, however, the work is to consist of ordinar y thread weft from the shuttle, as well as bristles drawn in by the forceps, then this clutch apparatus is altogether dispensed with.

The notch in the cam w, allowing the end of the lever to come forward, a horizontal rod h, see fig. 3, is drawn with it, which brings forward a catch i, that locks the lever 1, and prevents the bolt k, being acted upon by the face cam wheel m. This part of the apparatus is brought into operation for the production of the plain parts of the fabric.

It will be perceived that these parts of the loom for varying the kind of work may be changed in different ways, and effected by different sorts of mechanism. I, therefore, do not intend to confine myself to their exact position, forms, or dimensions, as those matters must depend upon the kind or quality of work to be produced; but I claim, as my invention, secured to me by the above in part recited Letters Patent, the application to powerlooms of the parts and appendages for holding the bristles, wires, hairs, whalebone, reeds, straws, cane, or other materials, and conveying them between the warp threads, or into the web or fabric; and the necessary parts for stopping or changing the operation of the same, and also of the shuttle, for the purpose of weaving different proportions of such materials into the web or fabric, and stopping the introduction of the said materials when sufficient length has been made, and then weaving plain web or fabric. A power loom, when these parts are properly applied and combined there

with, being capable of weaving such fabric without the necessity of the hands of the attendant or workman' being used for introducing the materials into the web or fabric-Inrolled in the Rolls Chapel Office, June, 1836.] Specification drawn by Messrs. Newton and Berry..

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TO JOEL LIVESEY, of Bury, in the county of Lancaster, cotton-spinner, for his invention of improvements in machinery used for spinning, preparing and doubling cotton and other fibrous substances.-[Sealed 10th November, 1836.]

THIS invention applies principally to that construction of spinning machine called a throstle, and is designed in the event of any of the yarns breaking between the front drawing rollers and the spindle flyers, to prevent such broken ends of the yarns lapping round the front drawing rollers, by the adaptation of a roller covered with cloth or other rough surface, which is to be kept in contact with the under surface of the front drawing rollers, by means of springs or by a weighted lever, for the purpose of taking up such broken ends of yarn and lapping them round itself.

The Patentee describes his invention as consisting in the application to the front drawing rollers of such spinning machinery, of a moving surface of woollen cloth or any such material, by means of which the lapping or accumulation of roving yarns or threads round the front drawing rollers are avoided when a thread breaks, and which also prevents the very common occurrence of the broken end interfering and entangling with the other threads; and further, it is said this

improvement renders the piecing or joining of the broken yarns more perfect, because it is effected with the exact amount of roving, thread, or yarn delivered from the front drawing rollers, the lapping being taken` up by the under clearing surface, where it can remain until the attendant has leisure to remove it; and it is said that this allows the piecing to be performed more expeditiously, and fewer hands are, therefore, required.

Plate XI., fig. 7, represents in section that part of a throstle frame which is called the drawing apparatus; a, b, c, are three pairs of drawing rollers, be- · tween which the rovings of cotton or other fibrous materials are passed in the usual way from the spools in the creel above, and delivered in the drawer, that is, in an extended or refined state from the front rollers e, to the bobbins and flyer below. A roller d, called the under clearer, is covered with cloth or some other suitable material, and mounted upon weighted levers e. As these levers hang upon fulcrum pivots in the standards f, the weights g, keep the roller d, in contact with the periphery of the lower front delivering rollers c, and thereby cause the clearing roller d, to turn with them. In the event of the descending yarn breaking between the delivering rollers and the flyer, the rough surface of the clearing roller d, takes hold of the broken end of the yarn, and laps the yarn round itself until released by the attendant.

The manner of applying the under clearer, as shown in the figure, is to be considered only as one mode of adapting it to drawing and spinning machinery, as the Patentee says that he is well aware it may be variously modified by the adoption of springs instead of levers, and even by the employment of a moving surface of woollen or similar substance; but that which he claims

VOL. XI.

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