US296297A - boyle - Google Patents

Description

(No Model.) 3 SheetsSheet 2.

V BOYLE & J. ROYLE, J1".

SHEDD'ING MEGHANISM FOR mom. No. 296,297. Patentedgkpr. 1, 18.84.

N. PETERS. Phnw-Liihogmhan \Muf ingtam D. c

(N0 Model.) 3 Sheets-Sheet 3. V. BOYLE & J. BOYLE, Jr.

SHEDDING MECHANISM FOR LOOMS.

N0 A D OOOOOOOOOOODOO .l 1 0000 o o 4 OOOOOOOQOOOOCOOOOOOOOOOO UNITED STATES PATIENT Fries.

VERNON BOYLE AND JOHN-BOYLE, JR, OF PATER-SON, NEW JERSEY.

SHEDDING MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 296,297, dated April 11-1884.

Application filed December 6, 1882. (No model.)

To all? whom it may concern:

Be it known that we, nnnon BOYLE and Joan BOYLE, Jr., both of Paterson, in the county of Passaic and State of New Jersey,

have invented a new and useful Improvement in Shedding Mechanism for Looms, of which the following is a specification.

Our invention relates to the kind of shedding mechanism known as a dobby. In such mechanism the hooked liftingwires from which the harness is suspended are operated by a knife or lifting-bar, over which they hook, and a lower bar or grid, through which they pass.

Our invention consists, first, in a novel combination, with the said lifting-bar or knife, the lower bar or grid, the lifting-wires, and needles connected with theliftingwires, a patterncylinder, and means for operating it, of a rockshaft extending between said bars, mechanism connected directly with-the rock-shaft for imparting an oscillating motion thereto, and toggle-like connections between opposite sides of the rock-shaft and said bars, through which said bars are operated by the rock-shaft.

By causing the rock-shaft before described to carry the toggle-like connections to and slightly past their centers we obtain a considerable dwell of the lifting-bar or knife and lower bar or grid at their extreme upward and downward positions, which is very desirable, as it affords ample time for the passage of the shuttle through the warp. The rock shaft above described we operate from a crank on the loom crank-shaft, and as two looms placed end to end are commonly run by one attendant, it is desirable that the connections for operating the (lobbies of the looms should he at the right-hand side of one loom and at the lefthand side of the other loom. To provide for readily thus arranging the said connections is a further object of our invention; and to this end the invention consists, second, in the combination, with the liftingbar or knife, thelower bar or grid, lifting-wires, the needles connected with the lifting-wires, and a pattern-cylinder and means for operating it, of a hollow rockshaft for operating the lifting-bar or knife and the lower bar or grid, bearings for holding said hollow shaft against longitudinal movement, and an innershaft capable of adj ustinentlengthwise through the hollow rock-shaft, but so fitted to the rock-shaft that it cannot turn independently thereof, but will cause the rock-shaft to turn with it. The said adjustable shaft may be square, polygonal, or p rovi (led with a feather or spline, and the opening through the rockshaft is of corresponding shape. The said inner shaft may be shifted so as to project on either side of the (lobby, and we also provide an outboard-bearing therefor, provided with a sleeve, through which the inner shaft may slide, but which is locked thereto, so as to turn therewith in the bearing. The combination of the inner sliding shaft and the above-described roclcshaft is also advantageous, because in operating heavy heddle-fraincs two dobbiesmay be used, the lifting-wires of the two being connected with opposite ends'of the heddle-frames, and both may be operated by a single inner shaft extending through both rock-shafts and a single connection with the crank-shaft of the 100111.

The invention consists, third, in a novel means for shifting a vibrating frame carrying a pattern-cylinder in a direction lengthwise of the cylinder, so as to bring either of two sets of holes with which the cylinder is provided opposite the needles, for the purpose of changing the pattern.

In the accompanying drawings, Figure 1 represents a side view of a dobby embodying our invention. Fig. 2 represents a plan thereof. Fig. 3 represents a plan of the cylinder and the end portions of a single row of needles, showing the arrangement of the holes in the cylinder with relation to the needles. Fig. 4 represents a vertical section of the (lobby, taken on the dot-ted line a as, Fig. 2, looking in the direction of the arrows. Fig. 5 represents a vertical section on the dotted line 1 y, Fig. 4. Fig. 6 represents the cylinder and its vibrating frame and devices for shifting the latter. Fig. 7 represents ahorizontal section, showing certain of the parts shown in Fig. 6;- and Figs. 8 and dare detail views illustrating certain of the devices whereby the vibrating frame carrying the cylinder is shifted and held.

Similar letters of reference designate corresponding parts in all the figures.

A. A designate the two side frames, which bar or grid, 0, is arranged a rock-shaft, D,

which is held .against longitudinal movement by its bearings in the frames A. As clearly shown in Fig. 5, the rock-shaftD is composed of an inner part, which passes through the frames A, and an outer part fitting between the frames, and adapted to be turned 011 the inner part, and secured in the desired position by a set-screw, a. This rock-shaft has arms 6, extending upward and downward, and these arms are connected with the bars B and O by the links 6, thereby forming a toggle-likeconnection between the rock-shaft and each bar, an arm, 6, and a link, 0, constituting the two memlfers of a toggle. I

The rock-shaftD is hollow, and through it extends an inner shaft, D, which is capable of being slid or shifted lengthwise. Said inner shaft is, however, so fitted to the rock-shaft as to insure the latter turning with it; and in this example of our invention we have represented the inner shaft as square, and as fitting in a square hole in thehollow rock shaft. The inner shaft might, however, be polygonal, or provided with a spline or feather, and the hole in the rock-shaft correspondingly shaped. The inner shaft, D, carries an arm, D", which is connected by a rod, D, with a crank, D, on the main crank-shaft of the loom, D', Fig. l, designating such shaft. In case it is desired to operate the dobby from either the right or left side of the loom, the inner shaft, D, is slipped through the rock-shaft, so as to project on that side.

In order to support the projecting end of the inner shaft, D, we provide an outboard bearing, f, which is pivoted at f in a yoke, E, adapted to slide up and down in a support, E, and to be secured in different positions by a set-screw, f Within the bearing 7 is a sleeve, f which can turn'freely therein, and which has a square hole through it to fit the square inner shaft, D.

In case the heddle-frames are very heavy, we may arrange a dobby at each end of the loom, and connect opposite ends of the heddle-frames with lifting-wires in both dobbies.

In operating the rock-shaft D, thetogglelike connections 6 c are moved to and slightly past a central position, and thereby a considerable dwell of the bars B C is produced at the end of the upward movement of the former and the downward movement of the latter, thus affording ample time for the shuttle to pass through the warp.

It is desirable that some adjustment be provided for causing the members 6 e of each toggle to pass the center at the proper time in the throw of the crank D, and the means for connecting the arm D to the shaft D provides for such adjustment. As here shown, a hub, D having a square center, is fitted on the shaft D, and the arm D is secured to the said hub by bolts f which pass through segmental slots f? in ears or flanges projecting from the said hub.

F designates the pattern or card cylinder, which is pivoted in a frame composed of arms F, projecting from a rock-shaft, F, as is usual. From the rock-shaft F an arm, F extends horizontally through the dobby to the opposite side thereof, as best shown in Fig. 5, and is connected by a link, F", with an arm, D, which is secured to the journal of the rock-shaft D.

In order to form a secure connection between the arm F and the frame F F, the arm is provided with an upwardly-extending lug or car, 0 secured by a bolt, 6", to one of the arms F, as best shown in Fig. 8. The pivot at one end of the cylinder F is held in its hearing in one arm-F by means of a pivoted latch, f, (shown best in Fig. 6,) and when said latch is raised, as shown in dotted outline in said figure, that end of the cylinder may be swung horizontally outward to disengage its pivot from the bearing in the arm F, to which said latch f is applied. The bearingf at the opposite end of the cylinder is constructed, as best shown in Figs. 2 and 6, so as to enable the cylinder to be swung outward, as described, and then withdrawn, for the purpose of introducing another cylinder in its place.

The cylinder F is provided with the usual projections, g, for taking hold of the cards, and as it is vibrated back and forth it is turned by a pawl or hook, g, in the usual way.

The usual means are provided to pullback the cylinder F in case any mistake in the pattern is made. These means consist of a handlever, f fulcrumed at f and having connected with it an upwardly-extending rod, f which has a tooth, f, (shown dotted in Fig. 5,) for engaging with the cylinder, to turn it in a re verse direction to that in which it is turned by the pawl When the hand-lever f is pulled down, the upper end of the rod strikes the pawl g and throws it out of engagement with the cylinder, and the tooth f 11 on said rod f acts on the cylinder to turn it backward. The lever and rod f 8 f are returned by a spring, f after they have been operated by hand.

The needles (I are shown as arranged in two rows, one row above another, as best seen in Figs. 4 and 5,with the needles of each row opposite the spaces between the needles of the other row, in the usual manner. The cylinder F has two rows of perforations or holes, h, but

the perforations or holes in each row are placed only half as far apart as the needles in a row, and, therefore, constitute two sets of holes, those in one set being alternated between those of the other set. It will therefore be seen that by shifting the cylinder lengthwise a distance equal to the distance fromlcenter to center or the holes 7L,the other set of holes will be brought into use. r

In order to act in conjunction with the adjustable cylinder, the cards must of vcoursehave two sets of perforationsyone intermediate to the other in a directionlengthwise of the cylinder, and when so made it is obvious that they IO may be used to weave two patterns alternately,

by shifting the cylinder lengthwise,without the necessity of removing the cylinder and substituting another set of cards.

In Fi g. 3 the relative position of the needles and holes in'the cylinder is shown. Fig. 2 is deceptive, in that it apparently sh owsas many needles as there are holes in each row in the cylinder; but this is caused by all the needles in both rows being seen and presenting the same appearance in said Fig. 2 that they would present if arranged in one row.

The rock-shaft F of the frame is fulcrumed in bearings G G, and the latter of these bearings has an incline, i, on its outer side sloping downward and outward, and a reverse incline, i, on its inner side. These inclines are shown in Figs. 5, 6, 7, 8, and 9.

H designates a latch pivoted on a stud or bolt, 5 which is secured in a projecting por- 0 tion of the arm F, and which has two arms, j

j, which are out of line with each other vertically, and a handle, jiwhereby the latch may be swung. When the handle 3" of the latch H is swung upward,the arm j acts on the incline 2i and moves the cylinder to the right, while when said handle is swung downward the arm j is caused to act on the incline 11' and moves the cylinder toward the left. The movement of the cylinder in either direction is equal to 0 the distance between theholes h of the cylinder.

anism connected directly with said rock-shaft,

for imparting an oscillating motion thereto, and

pattern-cylinder,and means for operating it, of

a hollow rock-shaft and connections for operating said bars, bearings for holding the rockshaft against longitudinal movement, an inner shaft of square or-analogous transverse section,

fitted to and capable of adjustment lengthwise through said hollow rock-shaft, and mechanism for oscillating said inner shaft, substantially as and for the purpose described.

3. The combination, with the bars B O, the lifting-wires c, and needles d, thepattern-cylinder, andmeans for operating it,0f the hollow rock-sh aftD,provided with the arms 6, the links 6, the sliding inner shaft, 1), and mechanism for oscillating it, the pivoted bearing f, the sleeve f, the yoke E, the support E, wherein said yoke is vertically adjustable, and the setscrew f all substantially as described.

at. The combination, with the bars B O and means for operating them, the lifting-wires c, and thehorizontallyarranged needles d, of the cylinder F, provided with two sets of holes, a

vibrating frame carrying said cylinder, means for operating said frame, and devices whereby said frame, and with it the cylinder, may be shifted in a direction lengthwise of the cylinder and retained in position after shifting, substantially as and for the purpose described.

5. The combination,with the bars B 0, means for operating them, the lifting-wires c, and the needles d, of the cylinder F,provided with two 1 sets of holes, a vibrating frame carrying said cylinder, mechanism for operatingsaid frame,

the bracket or bearing G, provided with the reverse inclines i i, and the pivoted latch H,

provided with arms j j, substantially as and for the purpose described.

VERNON BOYLE. JOHN BOYLE, JR.

Witnesses:

- HENRY T. Bnounv,

(3. MoLYNnUX.

Images