USRE6567E - Improvement in shuttle-box mechanisms for looms - Google Patents

Description

2 Sheets--Sheet1. H. WY MAN.

Shuttle-Box Mechanism for Looms.

2 Sheets--Sheet 2. H. WY MAN Shuttle-B0X Mechanism for Luoms.

No. 6,567, Reissued1u|y27,`1a75.

j'zi'g. 2.

UNITED STATES PATENT OFFICE.

HORACE WYMAN', O'E WOROESTEE; MASS., ASSIGNOE To GEORGE OEOMPTON.

IMPROVEMENT IN SHUTTLE-BOX M ECHANISMS FORLOOMS.

Specification forming part of Letters Patent No. 70,309, dated October 29, 1867; reissue No. 6,567, dated July 27, 1875; application filed July 20, 1875. l

To all whom 'it may e'ncera Beit known that I, HORACE WYMAN, of the city and county of VVorceste-r, in the State of Massachusetts, have invcntedzcerta'in new and useful Improvements .in Drop-Box or Shuttle Changing Apparatus of Looms; and that the following, taken' in connection with4 the drawings, is a full, clear, and exact description' thereof; f

1n the drawings, Figurel is a side elevation of parts of a loom,ie xhibiting my invention. Fig. 2 is a horizontal section through the same; 'and Fig. 3 is a rear elevation thereof.

2My invention wll'be described under two heads. -First, the shuttlefchanging apparatus zproper; second, a contrivance f orobviatin g :breakage of the parts, which is applicableto any shuttle-changing mechanism. My invention, under the lirst head, is dependent upon theuse of a lever or levers with shifting or movable fulcrums, or of a compound lever, and. by a leverwith shifting-fulcrums I mean' a lever provided'with mechanisms for oscillating itconnected to two different points on the lever, while the motion to perform the work is derived from a third point on the lever; and by a compound lever I mean one lever ipivoted upon another, each of the two having mechanism for oscillatin gl them, and the motion to perform the work being'derived from some point in either lever which is diilerent from those to which the oscillating mechanism is applied. The compound lever comes within the description of a lever with shfting-fulcrums, and is one way of constructing Such a lever. Such levers are not new as `applied to shuttlebox mechanism, and may be seen describedl in English and American Letters Patent prior'to the date of my invention. My invention is, therefore, limited to certain mechanical devices in combination with sucha lever or levers.

In the form of my apparatus shown in the drawings it is capable of changing or shifting a set of six boxes; of locating and holding any one of six boxes in line with the race; but it may be used for four boxes, or may be made capable of shifting eight boxes.

In the drawings is represented a long lever, f, pivoted at y on a sliding block, and connected at one end by the usual link to an ordinary sliding rod, d, which, at its upper end, is

Athe end farthest from theracks.

fastened to the lowervof the tier of shuttleboxes c", which, as usual, slide in waysor a frame, e,- consequently the boxes move when the end of the lever f moves.

This lever f has pivoted upon it at yl another lever, y2, and the pivot of the long level' f, at y, and the two ehds of the lever y, have secured to each of them (in the first case through the intervention of the sliding block) a connecting-rod, the three rods being shown at x w1 m2, but all the rods may be secured indirectly to the levers. The lower end of each of these connecting-rods is actuated by acrankpin mounted on a shaft 'provided with a toothed wheel, the' wheels being shown at w w wz, and these wheels can be turned through half a' revolution, first in one direction, then in the other, by racks or toothed surfaces u u u2 attached to bars sliding in guides v 'v '122. Each of these bars is provided with two studs, t,`at These bars and racks lie side by side, and two of the connecting-rods are bent, if necessary, so that neither the racks, toothed wheels, or levers may interfere in performing their proper fuuctions. 'A series of three rocking arms, q q" q2, each provided with ratchetteeth and prolonged downward, as at s, is mounted upon a stationary shaft, r, insuch wise that each arm can be moved independently. Each of 'these downward prolongations enters between the studs t of the corresponding rack-bar, or is jointed to such bar. These ratcheted rocking arms are shown in the drawings as actuated by pawls 'n nl n2, pivoted ona swingingarln at o, and worked by tappets p on the cam-shaft k, their operation being directed by a pattern chain or mechanism, through the intervention 'of levers m ml m2 attached to the pawls by wires or rods, all the parts enumerated in this sentence being of usual, ordinary, and wellknown construction.

Each cranlrpin can revolve from the upper center to the lower one independent of the motion of any otherfpin in the set, and when a pawl rocks a rocking arm the latter slides a racked bar, and the racked bar, through a toothed wheel, turns a crank-pin, and this pin, through the intervention of a connecting-rod, shifts a lever.

Under thi-s construction of parts, the end of the lever f which actuates the boxes may occupy and be held in six different positions, it being clear that the pivot y1, which is one shifting-fnlcrnm of lever f, may be heldin four ditl'erent positions by means of the crankpins acting through the connecting-reds on the two ends of lever y, viz, one with both pins down, a second with both pins up, a third with one pin, 102, np, and the'ther, wl, down, and a fourth when 'w1 is up and 'w2 down, thus holding the end ot' lever f in four dierent positions` supposing the pivot y to be stationary, while when y is moved, then six di'igrent positions can be given to the end of lever f.

With the combination of levers as shown, therefore, eight boxes may be used by giving the pin y a greater extent ot' movement than shown `in the drawings, and properly adapting the 'pattern-chain to govern its movements. If four boxes only are to be used, the pivot y may bevkept stationary, or one ot' the racks, u?, which operate the ends of lever y2, be kept stationary. When one rack is kept stationary the lever y will have a fixed i'ulcrnm at one end, and be capable of holding the fulcrum y of the long lever in two positions only. For more boxes the lever f may be still further' compounded and combined with other slideracks.-

Instead of connecting the end of the long lever directly to the link, which, at its lower end takes hold of the sliding rod d, I preferto make the lever f intwo parts, the lirst part, whichY is fastened tothe link, being pivoted on the other or second part atf, and held in place therein'by a notch on'y the first part f1 taking over an edge, f2, supported on the second part of the lever. When a box sticks the first part will spring a little, the edge will slip out of the notch, and the-box-sh-ifting apparatus will move without breakage and without acting upon the boxes.

Having thus described my apparatus, Iclaim as my own invention- 1. The combination of a lever, one end of which is connected to shuttle-boxes, with its actuating crank-pin and connecting-rod, and with another lever pivoted thereon, and the actuating crank-pin and connecting-rod thereof, whereby four shuttle-boxes may be actuated, the combination being substantially such as described.

2. The combination of a lever connected at one end with shuttle-boxes with its actuating crank-pin and connecting-rod, and with another lever pivoted thereon, and two crankpins and two connecting-rods for actuating the same, whereby six shuttle-boxes may be operated, the combination being substantially as described.

3. Alever connected at one end with vshnttie-boxes, its actuating crank-pin and connecting-rod, a second lever pivoted to the lever connected with the shuttle-boxes, and an actuating crank-pin and connecting-rod for it, in combination with ltwo toothed wheels and two toothed surfaces, the toothed wheels turning the crank-pins, and the toothed surfaces moving the toothed wheels, the combination being substantially as herein set forth.

4. A lever connected at one end with shuttlc-boxes, its actuating crank-pin and connecting-rod, and another lever pivoted thereon, and two crank-pins and two connecting-rods tbr'actuating the same, in combination with three toothed wheels and three toothed surfaces, the combination being and operating substantially as described.

v5. The combination of the two levers, a connecting-rod and crank-pin for each lever, and

two toothed wheels and two toothed surfaces, with mechanism for actuating the toothed sur g faces, substantially as described, the combinal tion being substantially as herein described.

6. A lever connected at one end with shuttlc-boxes, its actuating crank-pin and connect- 1 ing-rod and another lever pivoted thereon, and twocrank-pins and two connecting-rods for lactuating Vthe same, in combination withthree toothed wheels and. three toothed surfaces, and with mechanism substantially such as herein described for actuating the toothed surfaces, the combination being and operating substantially as described.

7. A lever connected at one end with shutf tlc-boxes, in combination with a lever pi'voted thereon, the 'latter lever being combined with g vand actuated bytwo connecting-rods and two crank-pins, and the combination, being substantially such as set forth.

8. A lever connected at one end with shuttie-boxes. in combination with a crank-pin and connecting-r od for moving the other end thereof, when said lever has a shifting or movable fulcrum, the combination .being substantially such as described.

9. The contrivance herein described for obviating breakage, which is a two-part lever, one part being a spring-lever Vpivoted to the other part, as described, in combination with a series of shifting shuttleboxes, substantially in the manne:` and for the purposes hereinbefore set forth.

J. B. SYME, J. A. WARE.

Images