US390339A - brooks - Google Patents

Description

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J. G. BROOKS. l

SHUTTLE CHANGING MEGHANISM POR Looms. 1\To.390,339.v A Patented Oct. 2 l 88.

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J. C. BROOKS. SHUTTLE GHANGING' MEGHANISM POR Loomis.

No. 390,339. Patented Oct. 2, 1888.

UNITED STATES' PATENT arieh JOHN C. BROOKS., OF PATERSON, NEWT JERSEY, ASSIGNOR OF ONEHALF TO ROBERT BLACKBURN, OF SAME PLACE.

SHUTTLE-CHANGING MECHANISM FR LOOlVlS..

'SPECIFICATION forming part of Letters Patent No. 390,339, dated October 2, 1888.

Application filed May 11, 18S?.

To all whom, it may concern:

Be it known that l', JOHN C. BROOKS, of Paterson, in the county of Passaic and State of New Jersey, have invented a new and useful Improvement in Sh uttle-Changing Mechanism for Looms, of which the following is a specification, reference being` had to the accompanying drawings.

The object of this invention is to provide, ro in a very simple way and without any movement of the sh Little-boxes relatively to the lay, for the changing of the shuttles n nder the control of pattern mechanism; and to this end the improvement consists in certain novel means, hereinafter described and claimed, whereby the shuttles are displaced or thrown from the raceway of the loom and replaced by others, as required for the production of a pattern.

Figure l in the accompanying drawings is a 2o front view of the lay, the shuttle-boxes, and the pattern mechanism of a loom and of all the other parts thereof necessary to illustrate the improvement, the framing being in section. Fig. 2 is a plan View of the parts of the loom shown in Fig. l, showing also the breast-beam.

Fig. 3 is a vertical sectional view corresponding with and at right angles to Figs. l and 2. Fig. t is a transverse sectional view of the right-hand shuttle-box and of that part ofthe 3o shuttle-changing mechanism attached to said box. Fig. 5 is a transverse sectional view of the left-hand shuttle-box and of that part of the shuttle changing mechanism which is attached to said box. Fig. (i is a front view of the pattern mechanism and part of the loomframing. Fig. 7 is a side view, partly in section, corresponding with Fig. G. Fig. S is a side view of one of the chains which are represented in some of the previously-mentioned 4o figures as part of the pattern mechanism. Figs. 4, 5, 6, and 7 are on a scale double that -of Figs. 1, 2, and 3, and Fig. 8 is on a still larger scale.

Similar letters of reference designate corre- 4.5 sponding parts in all the figures.

A is the side framing of the loom, and A the breast-beam. C is the lay. B

shuttle-boxes, and O O the lay-swords. D is the crank-shaft; D D, the rods connecting the 5o cranks with the lay, and E is the cam shaft.

are the Serial No. 237,795. (No model.)

All these parts, except the shuttlcboxcs, are

or may be like the corresponding parts of looms in common use for plain Weaving. The shuttleboxes differ from those of common looms, in that one of them-wiz., B in the eX- 55 ample shown-is constructed to contain several shuttles-one above another in reserveand is furnished with means of letting the rcserve shuttles down to the raceway, as required, and the other one--viz., 1B in the eX- 6o ample shown-is constructed to let out the shuttle which had been in use previously to the bringing of a new shuttle from the box B down to the raceway.

The shuttle-boxes and t-hc mechanism applied thereto, which I will immediately proceed to describe, for effecting the changing of the shuttles, is like that described in the specification of my Letters Patent, No. 371,299, dated October ll, 1887; but its operation is 7o differently controlled, the control in that case being by devices which canse its operation to take place only when a weft-thread breaks or gives out, and the control in this case being eected by means of a pattern-chain or equiva- 7 5 lent rotary pattern mechanism.

The shuttle-box B has a high. back, b, in front of which are secured two upright anglepieces, b', for the purpose of keeping in place the reserve shuttles s' s'Z 83, which, except while 8ov the shuttles are being changed, are supported one upon another, as shown in Fig. et, on a movable shelf or supporting-plate, b2, which works through a slot provided for it in the back b of the box between the anglepicces b. These angle-pieces are set wide enough apart to just receive the shuttleslength wise between them and lap over their ends. The ends ot' the weft from the reserve shuttles so supported are all secured to a fixed pin, 7.:, in the top of 9c the shuttle-box B. The said movable shelf or support b2 is connected by pivots to the lower parts of two levers, if, which are fast on a small rock-shaft, b4, which works in bearings in Vsmall brackets Zf, secured to the back b. To the upper end of each of the said levers if is pivoted one of two fingers ZJ", vwhich work through holes in the back b, and which are projected into the shuttlebox to form a second support for supporting the upper reserve roov shuttles whenever the shelf I)2 is drawn back to let the lowest one, s', of the said shuttles drop onto the raceway. One of the levers b3 is prolonged downward below its connection with the shelf b2, as shown in Fig. 4, to connect it with the swell or binder c of the shuttie-box B, for the purpose of drawing back the binder, to let the lowest reserve shuttle pass the latter in falling tothe raeeway when the shelf is withdrawn. The connection between the binder and the lever b is slotted, as shown at c* in Fig. 4, in order to permit the ordinary operation of the swell produced by the boxing of the shuttle.

The binder c may be of ordinary construction and controlled by a spring, c', in the usual way, as illustrated inthe representation of the shuttlebox B' in Fig. 5.

The shuttle-box B may be like that of an ordinary loom for plain weaving, except that its front d is removable, as shown in Figs. l and 2, but better in Fig. 5, where it is represented as capable of sliding up and down in guides d', secured to the front of the lay, the object of its being removable being to allow a shuttle to be thrown out from the box in a forward direction by the corresponding binder, c, as illustrated in Fig. 5, where the shuttle s is represented in the act of passing out, the front or shutter d being shown in that view as depressed below the raceway.

To facilitate the ejection of the shuttle, the front of the raceway and the top of the shuttle or box frontd are beveled, as shown in Fig. 5. To receive the ejected shuttle, a box, F, is at tached to the framing of the loom.

Below the lay there is arranged in bearings f2,secured to the lay-swords G',a rock-shaft, t', which extends all across the loom and has two arms, i and i, of which is connected by a rod, fiii, with an arm, bl, on the rock shaft b4 at the back of the shuttlebox b,- and i" is con nected by a rod, t5, with the arm j of a small rockshaft, j, (see Figs. 1, 2, and 5,) which works in brackets jsecured to the lay under the shuttle-box B. r1`he said rock-shaftj has another arm, j2, which is connected with the movable front or shutter d of the shuttlebox B'. The rock-shaft t' gives all the movement necessary for ejecting the shuttles from the shuttle-box B and for bringing new onesinto operative positions in the shuttle-box B. The said rock-shaft is inoperative untilfthe time comes for changing the shuttles.

,lhe mechanism so far described is precisely like that described in my aforesaid application, Serial No. 228,181, filed February 19, 1887, for changing shuttles when the weft breaks or gives out; but the means by which the rocksha'ft t is caused to operate to change the shutties for producing the pattern differs from what is shown in that application. According to this invention,the action of said rock-shaft t' is controlled by two rotating pattern devices, which in the example represented consist of two endless chains, 1 and 1', each composed of two kinds of links, k and 1%, which may be of any construction, provided the outer pro files of certain of the links k* have a greater projection from the central line of the chain than other links,k, as shown in Figs. 7 and 8. These chains pass over two wheels or pulleys, J and J', carried by studs Z Z', secured in and projecting from opposite sides of the upper arm of a lever, K, which is capable of oseillation on a stationary fulcrum, a, secured in the left side of the loom-framing. The lower end of the chain I runs on a pulley, m, carried by one of the gears of the train which drives the shaft M* of the take-up roll M, and the said chain derives motion from the take up mechanism. The chain I is intended to be long enough for the whole length of a pattern and the chain I long enough for some portion thereof-as,for instance, for weaving gingham patterns, such as those of handkerchiefs, the

rchain I would be long enough for the whole pattern, including the border, and the chain I might be long enough for one or more of the repetitions of the check or pattern within the border.

rllhe lower end of the chain I' hangs loose, and the said chain derives motion from a ratchet-wheel, iii", secured to its wheel or pulley J from a pawl, mi, carried by an elbowlever, N,'whieh oscillates on the same fulcrumpin,a,with the lever K. This lever N resembles substantially the lever known as the hamnier-lever77 of the weft stop-motion commonly employed in looms, and it is moved during every second beat of the lay by means of a cam, Nif, on the shaft E,which is geared with the crankshaft D of the loom by gears pp in such manner as to make one revolution forevery two of the crankshaft. This cam N* consists of an arm secured on the shaft E and a roller carried by the said arm, and it acts upon a shoe, N', on the lower arm of the lever N, for the purpose of quickly throwing forward the upper end thereof and producing the operation of the pawl m* on the ratchet-wheel 1*', by which the chain 1 is moved as the lay is completing its forward stroke.

The lever K,whieh carries the upper ends of the patternehains, carries at its lower end a pin, g, which works in a slot, g', in a rod, g2, which is pivoted at g3 to an arm, i', which is secured to and which projects downward from the rock-shaft t', before described, and at the upper end of the said lever K there is pivot-ed an arm, q, (see Fig. 6,) which projects transversely over the top of the patternchain I', above or near the head of the hammerlever N, and just below this arm q there is pivoted to the same lever, K, a small lever, r, which may be called the lifting lcver,7 one arm of which projects over the patternchain I, and the other arm of which projects under the pivoted arm q. Above that part of the said lifting-lever r which projects over the pattern chain I there is secured to the lever K a spring, t, which presses upon that part of the said lever r in KOC such manner as to tend to lift that end thereof arm above the chain l. When the low links la of the chain I are presented under the short lever r, the springt depresscs the end of the said lever over the said chain and raises the other end,which is thus caused to lift the arm q out of reach ofthe chain I' and out of range of the head of the hammer-lever; but when the high links 7c of the said chain I are under the said lever r theylift up the springpressed end thereof', and so depress the other end that it will permit the arm q to come within range of the chain l. Vhile high links lc* of the latter chain are presented under the said arm thelatter is still held up out of range of the head of the hammer-lever N; but when a low link, k, of the said chain l is presented under the said arm q the latter' drops within range of the head of the hammer-lever, and so allows the said lever,the next time it is thrown forward by the cani N21i, to carry forward the upper end of the lever K and throw back the lower end of the latter, which, by its action through the rod g2 ou the arm 'i' of the roekshaft t', operates to turn the said rock-shaft in a direction to operate the shuttlechanging devices, as will be presently described. y

Until the time comes for changing the shuttles the rockeshaft t' does nothing but move back and forth with the lay, and the rod g2 simply slides back and forth on the pin g in the lever K,the slot g' in said rod being long enough to permit this, and the upper end of the lever K is held back by a spring, n, which holds its lower arm in contact with a stop, u, on the framing; but when the upper end of the said lever is moved forward by the action of the head of the hammer-lever N on its arm q, as hereinabove described, the lower end of said lever K is thrown back, as shown in dotted outline in Fig. 3, far enough to bring its pin g in contact with the rear end of the'slot g of the rod g, so that the said rod,and with it the lower end of the arm fi of the rock-shaft ,will be thrown back, thus throwing up the arm i3 and throwing down the arm i* of said rockshaft. The downward movement of the arm t, just mentioned, produces the turning of the rock-shaft j and downward movement of the arm P thereof, and so produces the descent of the shutter d. The shuttle s in the shuttlehox B is then left uncovered in front, and the shuttle is left free to be pushed forward out of the box, as shown in Fig. 5, by the action of the binder c, produced by the ordinary pressure of the binder-spring c. Vhile this action is taking place at the shuttle-box B the upward movement ofthe arm i, which is under the other shuttle-besa, produces,through the rod im, an upward movement of the arm bT of the rock-shaft b", which turns the said rockshaft to a position to withdraw the shelf b2 or support from under the shuttle s', which had been previously above it in the box B, as shown in Figs. l and et, and also drawing back the binder so that the said shuttle is free to drop onto the raceway at the bottom of said box, whence it will be thrown through the shed bythe next action of the picker belonging to that box. Simultaneously with the withdrawal of the shelf or support b2 the fingers b at the upper ends of the levers b" are projected forwardinto the shuttle-box B under the shuttle sito' hold up that shuttle and any other shuttle or shuttles which may be above it until the shelf or support b2 enters the box again, which it will be caused to do by the return of the lever K by its spring u to its normal position, (shown in Fig. 3 in full outline) and the pulling forward ofthe arm t" of the rock-shaft t' by the rod g2, the'movement of the said rock-shaft so produced also causing the replacement of the front or shutter of the shuttle-box B. This return movement ofthe rock-shaft is assisted,

also, or might be produced altogether, by a spiral spring, i6, which is coiled round the said rock-shaft, and one end of which is secured to the rock-shaft and the other end to the lay.

To give an example ofthe way in which the two pattern-chains .operate to produce the changes of the shuttles at the proper time, I will suppose a pattern of the kind. hereinbefore referred toe-viz., a gingham handkerchiel". During the weaving ot' the plain bon der of such pattern the lowlinks of the chain l will be in operation on the small lever r, and the arm q will be lifted entirely above the chain l and out of range of the hammer-lever; but at the commencement of the weaving of the central pattern the high links of the said chain will be opposite said lever fr, which will thus be lowered within range of the chain I', which, by the presentation of one of its low links to the said arm, will let it drop within range of the head of the hammer-lever whenever the shuttles are to be changed..

The reserve shuttles will of course have to be placed by handiu the shuttle-box B in the proper order of sequence of color or quality of weft.

Vhat l claim as my invention, and desire to secure by Letters Patent, isM

l.. The combination, with the lay and the mechanism carried thereby for changing the shuttles, of two rotating or endless pattern devices and a supporting -lever and support therefor common to both of said devices, means for rotating the said devices and connections between said supporting-lever and the shuttleehanging mechanism, asccond lever arranged besidethe first-named lever and a cam for operating said second lever, an arm attached to the rst-named lever and overlying one of the said pattern devices and the second. lever, and a lifting-lever and spring, both attached to the tirstnamed lever, the said liftinglever being controlled by the other of said pattern devices and said spring to permit t-he engagement of the said arm with the first-mentioned pattern device and the cam-actuated lever to produce through the latter the operation of the shuttle-changing mechanism, all substan tially as herein described.

2. rIhe combination, with the lay and the shuttle-changing mechanism carried thereby,

IOO

IZO

of the patterircarrying lever K, and connections between it and said mechanism, and two endless pattern devices supported by said lever, the hammer-lever and the shaft and cam for operating it, the take-up mechanism and gearing, substantially as herein described, between it and one ofthe pattern devices, a pawl attached to the hammer-lever for operating the other pattern device, and a conneetion, substantially as herein described, permanently attached to one of said levers and capable of engaging with and being disengaged from tbe other and controlled by both pattern devices for controlling the operation of the patterncarrying lever to eect the changing of the shuttles, substantially as hercin set forth.

3. The combination, with the hammerlever and the shaft and cam for operating the sante, the patterncarrying lever and the two connected pattern devices, and the means, substantially as herein described, for operating the saine, of the arm q, overlying one pattern device and forming an intermittent connection between the two levers, the lifting-lever 1^,pivoted to the patterncarrying lever and overlying one pattern device and underlying the lifting-lever, and the springt, attached to the pattern-carrying lever for throwing the said arm q out of range of the hammer-lever, all sub- 3o stantially as and for the purpose herein de scribed.

JOHN C. BROOKS. Vitnesses:

FREDK. HAYNEs, HENRY J. MOBRIDE.

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