US14358A - peters - Google Patents

Description

lPETERSY PKUNIJTHOGRAPMER. WASHINGTON'D C UNITED .sTATEs PATENT oEEroE.

J. GREENHALGH', SR., OF WATERFORR.MASSACHUSETTS.

POWER-LOOM.

Specification of Letters Patent No. 14,358, dated March 4, 1856.

Toall whom 'it may concern:

Be it/known that I, JAMES GREENHALGH,

y Sr., of Waterford, in the county of Vorcester and State of Massachusetts, have invented certain new and useful Improvements in Power-Looms; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings,

forming part of this specification, in

which- Figure l, is a side elevation of a loom with myimprovements. Fig. 2, is aback view of the same. Figs. 3 and 4 represent parts of the shuttle box motion;

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates to looms for fancy or figured weaving. l

It consists in certain improvements in the shuttle box motion for changing the shuttles and also in an improvement in the shuttle motion whereby two or more shuttles can be thrown successively from either side of the loom.

To enable those skilled in the art to make and use my invention, I will proceed to describe its construction `and operation.

A, is the framing of the loom.

C, is the lay rocking on two short rock shafts a, a, which are firmly secured in the swords b b and fitted to turn in journal boxes c, c, which are secured to the side framing. y y

yThe shuttle boxes B, B, B,B, B2 B2, of which there are three pairs shown are of the kind known as drop boxes. They are carried by and swing with the lay C, to which suitable vguides are applied to keep them in place as they riseand fall. Those on one side of the loom are supported by a rod d, at the bottom of which is a fork g, git, as shown in Figs. 1 and 2, of which fork one leg g, has an internal toothed rack to gear with a pinion e, on the end of, a shaft f, which extends all across the lay and fits easily in bearings, which are made by boring out the rock-shafts a, a. The other leg gt, of the fork, which is straight internally and is without teet-h, stands nearly close to the pinion and serves to confine the rack in gear with the pinion. ,The shuttle boxes on the opposite side of the loom are supported by a rod d', similar to d, and 55 having a similar fork g', gk, gearing'with sary to overcome the friction of the several parts of the machinery.- This arrangement of the racks causes one set of boxes to rise while the other is falling and renders it necessary for the upper box of one set to correspond with the lowest one of the other and vice versa. The changing of the shutt-le boxes is effected by motion derived by the racks g, g, from the pinions e, e, the said motion being received by the pinion e, from one of two horizontalracks ZL, h, belonging to forks h, and 7L', if', of asimilar character to g, gi', and g, gf', the said forks being attached to two notched bars j, and j', which are suspended by light rods Z, and l, from two levers 7c and c, which work on a lixed fulcrum m, at the back of the top framing of the loom. The racks L, L, are on opposite sides of the pinion c, and therefore the movement of one rack gives the pinion a movement in the opposite direction to that which the other rack gives moving inthe same direction. The bars j, and j', are drawn forward lengthwise to operate the boxes by two hooks i, z", which are jointed to a vibrating lever n, which receives'one movement back and forth lfor every beat of the lay by means of a cam 0*, on the main shaft D, of the loom by which the lay is driven, and a-spring p, connecting it with the framing. The hooks i, z", are furnished with pins g, g', near their extremities which slide within or upon a ide r, in the side of the framing A, which prevents each falling below a certain point but allows the point of the hook z', which being attached nearest to the fulcrum of the lever n, has the shortest mo` tion, to fall lower than'that of i. Whichever bar y', or j, is required to be drawn forward to effect the change in the shutt-les,r requires to be raised up to enable the hooks to catch in the notches on its upper edge and the Aother one requires to be lowered out of the way of the hooks that it may be carried backward by the action of the pinion e, on its rack as the said pinion receives motion from the forward movement of the iirst named bar.

Then a short or single movement of the bar is required only sufficient to move the boxes one step or to bring the next or adjoining boxes intoV operation, the bar only requires to be raised high enough to be caught by the hook i, which has the shortest movement, but to move the boxes two steps at once or give them what may be termed a double movement to change from the top to bottom or vice versa, the bar requires to be raised higher to be caught by the hoo-k i", having the longest movement. This is illustrated in Fig. l, where the bar j', is shown in black outline, raised only high enough for the hook z', to engage with its notches and in red outline raised high enough for the hook i', to engage with it.

The movements of the bars to eifect the change o-f boxes is entirely governed by a studded cylinder E, or a studded chain passing over a cylinder in the same way as the harness motion is governed in fancy or figured weaving, the said cylinder being upon the same shaft as the pattern cylinder F, by which the operation of the harness .is governed. This cylinder E, has' two rows of studs s and s; the former row to opera-te upon a lever t, which has a fixed fulcrum and which connects by a rod u, with the lever 7c, for the purpose of raising the bar j; and the latter row to act upon a lever i', which is on the same fulcrum ti, and is connected by a rod u', with the lever k', to raise the bar j. The height which the bars j j are raised is regulated by long and short studs in the cylinder E, long studs being placed at the proper points to raise the bars to the height of the hook z, and short studs at the proper points to raise them to the height of the hook z'.

By a proper arrangement of the studs s, s, the changing of the shuttles may be effected to produce any pattern that can be woven with the number of shuttles employed. This method of controlling the changing of the shuttles is much more sim ple than the method commonly employed; it is at the same time more efcient and the mechanism less liable to wear and tear, and it enables the proper relation of the harness motion and the box motion to be adjusted and maintained without difficulty, owing to the two pattern cylinders E, and F, being fast to the same shaft.

The pattern cylinders Vreceive motion through a ratchet wheel o, on their shaft G, from a hook pawl o', attached to an arm o* of a rock shaft H, which receives motion through an arm fw, from a connecting rod 20", attached to a crank w*, on the end of the main shaft D.

The picker staves I, I, of the' shuttle motion swing on pivots a0, w, which are secured in stocks mk, mi", which are secured to the ends of two horizontal rods or shafts y, y, which are rigidly secured to the swords Z2, Z), of the lay below the shaft f. The lower ends of the two picker staves are connected by a spring 2, and at some distance above their centers of motion ae, they are connected each by a cord 2*, passing around a pulley yf, with one of two levers J, J which swing from a shaft K, which extends all across the loom; the said levers being operated upon one at a time to throw the picker staves forward and throw the shuttle, by means of studs 5, 5*, attached to t-he outer faces of the disks L, L, of the eccentric cams by which the lay is driven. The two studs 5, 5*, are placed exactly opposite to or in line with each other, but the two levers J, J are arranged at such a distance apart that both cannot possibly be operated upon at once. The shaft K, has a longitudinal motion for the purpose of bringing either one or the other of the levers J, J into the path of its respective stud. This movement is produced by a V shaped stud F on an arm 8, at the rear end of the rock-shaft H, see Fig. 3, striking and throwing aside the upper end of a lever 9, which works on a fixed fulcrum 10, and has its lower end entering a loop attached to the front side of the shaft K, the said lower end giving motion to the shaft. The position of the lever 9 is controlled so that the stud 7 may pass on one or the other side of it, to slide the shaft K, in either direction as may be desired, by means of a row of studs 8*, on the cylinder E, or on a separate cylinder or by an endless chain running o`ver a cylinder on the same shaft G, the said row of studs acting on a lever t2, which connects by a rod l2, with a third arm of the lever 9. The loop in which the lower arm of the lever 9 enters to move the shaft must be long enough to admit the necessary play of the lever to throw its upper end to one side or the other of the stud 7 By a proper arrangement of the studs 8*, which raise the lever 9, the position of the lever 9, may be so controlled at every movement of the lay, as either to give the shaft K, a movement or not. When no movement is given to the levers t2, and 9, in consequence either of two pins or two blanks coming in two succeeding spaces of the cylinder no movement being given to the shaft K, the same picker acts twice in succession, throwing two shuttles in succession from one side 'of the loom; but when a movement is given to the levers t2, and 9, a movement of the shaft K, takes place andthe opposite picker to that which operated during the preceding movement of the lay will be caused to operate. By enabling two shuttles to be thrown at pleasure from one side of the loom a greater variety may be given to a pattern or in other Words more elaborate patterns may be produced.

What I claim as my invention anddesire to secure by Letters Patent is- 1. In combination With the method of balancing the boxes, I, claim the method of giving motion to the shaft f, to operate the boxes, by means of tvvo notched bars j, j, which are geared with opposite sides of the pinion e, on the said shaft and are suspended from levers t, t, which are operated upon by a pattern cylinder in such a manner as to raise either of the said bars, as may be necessary, to bring its teeth into engagement with a dog z', or z", suitably arranged and operated to give the requisite motion to the bar.

2. I claim the method of giving the shuttle boxes a single or double movement as may be required by the pattern, by employing tivo hooks z', i', or their equivalents, having unequal movements, arranging the said hooks or equivalents With their points at different elevations, and employing long and short studs in the pattern cylinder or its equivalent, to raise the rack bars j, j, which give motion to the boxes to a position to be caught only by the hook having the shorter movement or to a position to be 'caught by the hook having the longer movement, substantially as herein described.

3. Controlling the order of the succession of the movements of the tvvo pickers to make them act in regular alternate succession or otherwise as may be desirable by means of a pattern cylinder or its equivalent acting upon the mechanism by which movement is transmitted from the driving shaft to the pickers in such a manner as to throw or retain either picker in gear With the said shaft and the other one out of gear substantially as herein described.

4E. 'Ihe combination of the levers J, J, through Which the cams on the driving shaft operate the pickers, with the sliding shaft K, the lever g, and the V shaped stud 7 the said lever g, being moved from side to side by the pattern cylinder and t-he said V shaped stud receiving a suitable motion to operate on the said lever g, substantially as herein described.

JAMES GREENHALGH, SENR.

Witnesses:

J AMES H. CoMsTocK, DARIUs BENNETT.

Images