US87337A - Improvement in mechanism for operating the shuttle-boxes in looms - Google Patents

Description

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ROBERT BURNS GOODYEAR, OF ELK'ION, MARYLAND, ASSIGNOR TO BARTON H. JENKS, OF BRIDESBURG, PENNSYLVANIA.

Letters Patent No. 87,337, dated Mmh aisee.

IMPROVEMENT MECHANISM FOR AOPE'R..Ar.|'.'IIG"THE SHUTTLE-BOXES IN LQOMS.

.ne Schedule referred to in these Letters Patent and making pax-t of the same.

To all whom it may concern f Be it known that I, ROBERT BURNS GOODYEAR, of the city and county of Philadelphia,in the State ofIennsylvania; have invented a new and useful Improvement in Looms; and I do .hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure 1 is an elevation of one side of a loom-frame, having my improvement applied to it.

Figure 2vis a top view of the improved devices.

Figures 3 and 4 are details ofthe star-ratchets and their levers. .j ,4

Similar letters ofieference indicate corresponding parts in the several lgures. This invention relates to an improvement on that class of ylooms which are designed for weaving with wefts of dilferent colors. Y v

The object is to so construct the mechanism for actuating the shuttle-boxes, that all regular changes can be made for moving a greater or less number ofthe boxes in the same given time, as willbe hereinafter explained. To enable others skilled in the art to understand my invention, I will describe its construction and opera tion.

In the accompanying drawings, Irepresents the camshaft, having a single-throw cam H permanently fixed `toit, and adaptedA for acting upon the jaws, L i, of a `sliding bar, A, and giving a longitudinal reciprocating fmotion thereto.

acts upon a ratchet, f, on one end of a studded index or pattern-cylinder, F, and gives an intermittent rotary motionto this. cylinder. At the opposite end of this sliding bar A, twopawls, c c', are pivoted, which, at proper times, are' caused -to act upon theirl respective ratchets b b', to each of which ratchets a star-cam of one or more depressions is permanently attached. The star-cam J is fast to the ratchet b, and thestar-cam J', which is the'largest, is fast to the ratchet b', and all are applied upon-a stud, K, so as to turn freely thereon.

The lever Eis pivoted t0 astud, L, on the loom-frame, and has two or more curved arms, El EX, on one end, which bear upward against the star-cams, and are acted upon by these cams as they are moved about their axes.

At one end of the slide A is a pivoted pawl, B', which There will be as many arms on lever E as there are cam-wheels. In the drawing only two are represented, but in practice any required number maybe employed. The front arm of lever E is, in practice, attached to the rodof the shuttle-boxes in the usual well-known manner.

The paern-wheel F has two or more rows of studs vproj ecting from its circumference, and properly disposed thereon, which studs may all be of a given length or of different lengths. These studs act upon their respective levers, Gr G', there being a lever for each row or each length of stud, and foreach pawl and ratchet; but

this cylinder F may be constructed with one lever having a bifurcated end acted upon by the studs, so that one length or row of studs will move the lever through a given are, and the other row or length of studs will move the lever through a greater arc. These studs should be adjusted or disposed upon their drum or cylinder F, according to the patternV which it. is desired to weave. i

In the drawings I have represented two levers, G G,

and two rows of studs upon the cylinder F. The levers G G are both pivoted to the loom-frame, and are connected, by chains'or rods a a', to their respective pawls, c c'. Thus it will be seen that for each sh uttle-box there i's a star-cam, a ratchet, and a row or diiferent length of studs.

The operation is as follows:

The cam H on shaft I moves'the slide Ato and o with each revolution of this shaft. y

In the forward movement, the studded cylinder is moved by the pawl B, so that when a stud comes under one end of a lever, G Gr', such end is lifted and the opposite end depressed.

In the backward movement ofthe slide A, indicated by the arrow in fig. 1, the pawl c is moved overv the notches of the ratchet b of star-cam J, and when depressed by the lever G, this ratchet engages with the notches of b, and turns cam J the distance of'on'e cam or leaf, which-depresses the end E1 of lever E, and moves up the end E, thus lifting one box, and as long as the stud last mentioned keeps up the lever G, the star-cam J will be revolved. v

At the nextrevolution of the cam-shaft, the end lf, of lever E',`is released and allowed to descend by the gravity ofthe shuttle-boxes which it carries.- When there is no stud under either lever G G, the pawls c c are prevented from moving the star-cams, and the shuttle-boxes remain stationary. When the studs on the `cylinderF movel the lever G', the pawl c moves the starcam J', which, having'a greater lift than cam J, depresses the end EX of the box-lever E a greater distance than it is depressed by cam J, and moves up the end E, and lifts two boxes, or skips a box.

The lever E has a rule-joint at n, so constructed that the section E2 is held stationary in position by a spring, g, sufficiently so that when a shuttle fails to fully enter a shuttle-box, in its passage across the race of the loom, and becomes entrapped, or when the picker fails to leave a box by any derangement of the pickingmechanism, the positive upward movement of the lever E, bythe action of one or the other of the star-cams, is

modified by the section E2 yielding, which will prevent injuryto the shuttle-box or other parts of the loom.

It is obvious that this device may be appliedv to the connection between the end of the lever and the liftingrod ofthe shuttle-boxes in almost any of the well-known looms.

Instead of a studded cylinder, F, an endlclis chain equivalent, substantially as described.

2. The combination of two or more independentlyand each provided acting earns, having their axes in line,

eve-a1 with a ratchet and actuating-pam, with the shuttle-box lever and a pivot-ed lever or levers acted on at oneA end by the pattern-device, and attached at the other: end to the actuating-pawl or parvis, all constructed substantially as described and for the purpose set forth.

n 3. The slide A, provided wth pawl B and pawls c o', and arranged so as to operate the pattermcylinder F, or its equivalent, and adso the starfeaims J J', substantial y as described.

ROBT. B.'GOODYEAR. Witnesses:

WM. T. FLINN', J. G. MITCHELL.

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