US1344067A - Warp-opening mechanism for looms - Google Patents

Description

J. TOWERS.

WARP OPENING MECHANISM FOR LOOMS.

APPLICATION FILED JUNE I3. 1919.

1,344,067. Patented June 22, 1920;

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in we v \4 Q wallllllllllg \nventor; Jesse Towers Altys.

UNITED STATES PATENT OFFICE...

JESSE TOWERS, OE CORNWALL, ONTARIO, CANADA, ASSIGNOR TO DRAPER CCRPORA- TION, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

WARP-OPENING MECHANISM FOR LOOMS.

Specification of Letters Patent. Patented June 22, 1920.

Application filed June 13, 1919. Serial No. 303,954.

To all whom it may concern:

Be it known that I, Jnssn TowERs, a citizen of the United States, residing at Cornwall, Province of Ontario, Dominion of Canada, have invented an Improvement in Warp-Opening Mechanism for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to improvements in looms and is particularly designed to provide a positive and eflicient adjustable mechanism for opening or separating the warps after they pass from the beam and particularly before they pass through the detectors of the usual warp stop motion. The warps when they leave the beam are frequently stuck together by reason of the sizing or interlocking of the fibers or knots therein and it is highly desirable to open up or separate these warps, and break up the sizing thereupon.

The object of the invention is secured by a pair of flat members introduced between the warp sheets preferably between the warp beam and the detectors of the warp stop motion and arranged to rock to an adjustable extent about one of their longitudinal edges so that as they are thus rocked during the operation of the loom the angle between the warp sheets is continually changed, the tension upon the warps is continually varied, and the warps are thus separated and the sizing thereon broken up, enabling the warps separately and freely to pass through the detectors and finally into the fell of the cloth. 7 y

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims. much of an ordinary type of loom provided with a warp stop motion as is necessary to a disclosure of a preferred form of the present invention.

In the drawings Figure 1 is an elevation partially in vertical cross section looking from the interior of the loom to one side thereof with many of the parts removed or broken away.

Fig. 2 is a view in perspective with the central portion broken away of the pair of The drawings represent only so flat members employed in a preferred form of the invention.

Fig. 3 is a view in transverse section of a flat member formed by a pair of flanged plates. 1

Fig. 4 is a view in transverse section of a flat member formed of a pair of flat plates flanged at both edges and at the center.

Fig. 5 is a detail in perspective showing the connection between one of the connectors running to one of the members and the lever by which it is operated, a portion of the lever only being shown in dotted lines.

As the invention only has to do with one particular feature in the loom, namely mechanism for opening and separating the warps.

and breaking up the sizing thereon it is unnecessary to enter into any detailed description of the other features of the loom which may vary as desired. The invention is particularly applicable to a loom employing a.

warp stop motion in which the warps pass through detectors and in such case the mechanism is located between the warp stop motion and the warp beam. This is desirable because if the warps are stiff or are not fully separated after leaving the warp beam they may catch in the detectors and become broken. I

The loom illustrated is of a well known type comprising side frames but one of which 1 is illustrated. The warp beam which is not shown is located as usual at the rear of the loom and the warps pass therefrom to the usual whip roll 2. From the whip roll the warps pass to the warp stop motion which is shown as comprising two rows of detectors 3, one for each warp. These detectors are supported by the individual warps and if a warp breaks the corresponding detector drops into the path of a vibrating feeler bar 1 through which is initiated the stopping of the loom in a well known manner. From the detectors the warps are divided in two sheets 6 and 7 b lease rods 8 and 9 and thence pass throug the heddles 10 of the harness frames 11 and thence through the reed 12 carried by the lay 13 to the breast beam 14.

Supporting brackets 15 are mounted on the loom frame at each side thereon, and in the preferred form shown between the whip roll 2 and the detectors 3, and these brackets are arranged for vertical adjustment. For that purpose each bracket is slotted vertically at 16 and secured in place by a bolt 17 passing through the slot into the side frame of the loom.

A pair of flat members 18 and 19 are pivotally mounted, as by trunnions or pivots 21 and extending from one of the longitudinal edges of each member, in the bracket 15. These fiat members extend between and divide the warp into two sheets. These fiat members may, as shown in Fig. 2, each be made of a single flat metal plate or, as shown in Fig. 3, each be made of a pair of metal plates 22 flanged at their side edges and ar ranged as shown or, as shown in Fig. 4, be made of a pair of metal plates 23 flanged at each edge and also struck up or flanged at near the center. The forms illustrated in Figs. 3 and 4tare for the purpose of giving greater strength to the plates with a minimum amount of metal.

it will thus be seen that if these flat members are rocked in opposite directions about their pivots during the operation OiltllO loom they will act to change the angle between the two warp sheets and vary the tension thereupon thus acting at the same time to separate the wa ps and break up the sizing thereon.

Suitable means are provided for rocking the members in opposite directions during the operation of the loom. These means are so arranged as to effect a positive movement of the flat members when rocking apart so as to effect a positive and firm action upon the warp sheets and these means are so ar ranged as to effect a yielding movement of the members in closing or rocking together.

As a simple and eliicient means for securing the desired rocking movements of the flat members the construction illustrated in the drawings is provided.

In the construction illustrated a cam 25 is mounted upon the usual cam or other shaft 26 which is continually rotated during the operation of the loom. This cam has its face in engagement with a lever 27 fulcrumed at 28 upon the loom side or a shaft projecting therefrom and the lever in turn is held in contact with the cam 25 by a spring 29 con necting the opposite end of the lever with a fixed point 30 on the loom side.

Suitable connectors such as rods 31 and 32, the length of which are adjustable as by turn buckles 33, extend respectively from points at opposite sides of the fulcrum of the lever to the flat members. At the upper ends these connectors are shown as pivote'd upon pivots or 'trun'iiions 34. and 35 respectively projecting from'the edges of the flat members 18 and-19. At their lower ends these connectors, as shown more clearly in Fig. 5, are provided with brackets 36 vertically adjustable thereon by set' screws 37. These brackets havexprojecting transversely therefrom pivot studs 38 passing through one of a row of holes in the lever 27 and held in place by cotter pins 39.

It willthus be seen that by adjusting the pivot studs 38 into one or the other of the various holes inthe lever 27, by adjusting the turn buckles 33, and by adjusting the brackets 36, one or the other or all as de sired, the extent of the rockingmovement of the members may be adjusted together or independently to any desired extent. It will'also be seen that the position of the two flat members between the warp sheets may be vertically adjusted by adjusting the brackets 15. Thus the action of the flat members upon the warps may be controlled or adjusted to any desired extent.

The invention thus provides a simple and effective means for securing the desired results and one which may be readily applied to existing looms without any change in the constriiction thereof but by the simple addition of the necessary parts embodying the invention.

Having thus described my invention what Iclaim as new and desire to secure by Letters Patent is A loom comprising a frame, a pair of flat members extending between the warp sheets, each member being pivotally mounted on the frame to rock about one of its longitudinal edges, a lever fulcrumed on the frame, means for rocking the lever, a pair of longitudinally adjustable rods pivoted at their upper ends IGSPOCiJlVGly to said flat members and at their lower ends respectively and adjustably connected to said lever at opposite sides of the fulcrum thereof whereby the extent of the rocking movement of the Hat members may be readily adjusted.

In testimony whereof, I have signed my name to this specification.

JESSE TOWERS.

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