US3045526A - Braider carrier tension weight - Google Patents

Description

July 24, 1962 s. c. HARRIS BRAIDER CARRIER TENSION WEIGHT Filed June 20, 1960 F l G.

INVENTOR. STEPHEN C. HARRIS v ATTORNEYS 3,045,526 BRAIDER CARRIER TENSION WEIGHT Stephen C. Harris, 1336 Warwick Neck Ave.,

Warwick, R.I. Filed June 20, 1960, Ser. No. 37,128 2 Claims. (Cl. 87-56) This invention relates to an improvement in a weight for a braider carrier. In braider carriers which are manufactured along the general construction lines of M-ossberg Patent 1,630,669, it has been necessary to lightly oil the vertical standards upon which the weight reciprocates. This has been necessary in order to provide free running of the weight upon the standards and it has certain deleterious effects. The presence of lubrication in general upon the vertical standards acts as a place upon which fly from the yarn being carried by the carrier may accumulate. Additionally, if rubber thread is being covered by the braider, the tale from handling the thread will fall about the vertical standards. Conditions such as these cause the vertical standards to gum and a consequent improper operation of the weight mechanism. As a result of this, it has been necessary in accordance with past practice to periodically clean the standards of the braider carrier which means that the braider must be shut down for periods of maintenance. This is an unsatisfactory situation in a mill where high production is desired -'nited States Patent and it is therefore an object of the present invention to I provide a weight construction which will eliminate the need for oiling the standards of a braider carrier.

A more specific object of the invention is to provide a weight for a braider carrier which will have one or more of the guide portions thereof provided with oilless bearings.

With these and other objects in view, the invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

FIG. 1 is a side elevation showing a braider carrier of the general construction upon which the weight referred to may be used;

FIG. 2 is a sectional view taken on iines 22 of FIG.

1 showing one manner in which weight made in accord ance with the teachings of this invention may be constructed;

FIG. 3 is a sectional view taken on lines 3-3 of FIG. 2;

FIGS. 4 and 5 are perspective views of the bearings used in the weight construction; and

FIGS. 6 and 7 are perspective views of modified forms of weight construction and particularly the bearing means therefor.

With reference to the drawings 10 generally designates the base of a carrier which is provided with a hub 11 and a package spindle 12 rising therefrom upon which a yarn package such as 13 may be mounted. The hub 11 is provided with a pivot pin 14 upon which is rockably mounted a latch 15 which is adapted to pass into engagement with the teeth 16 of the package spool 13. The opposite end of the latch 15 is provided with laterally extending members 17 which are adapted to be engaged by a latch lift 18 in a manner well known to those skilled in the art. 011 the base of the carrier there is mounted two standard members 20 and 21. Midway of the standard 21 there is atfixed a thread guide 22 and between the thread guide 22 and the upper end of the latch lift 18 is a compression spring 23.

A tension weight 2-5 is mounted to slide vertical on Patented July 24, 1962 the two standard members 20 and 21 and is preferably struck up from sheet stock so as to form a horizontal plate portion 26 with the sides thereof turned downwardly to form arms 27. To provide an elongated hearing for the weight on the standards, there is an upwardly turned portion 28 with an inturned end 29 that is pierced with a hole 30 in line with a similar hole 31 pierced in the plate portion 26. The plate portion 26 is also formed with a pair of projecting fingers 32 which are generally arranged to embrace the standard 21. To complete the basic structure of the weight, a hook-shaped finger 33 is provided leading off the upturned portion 28 which serves as a thread guide around which the yarn is looped after passing through the eye 22. Additionally, a compression spring 34 is slid over the standard 20 and bears against the inturned end 29 of the weight 25 and also against an upper bracket 35 which holds the vertical standards N and 21 in alignment at the upper end thereof.

In order to provide for proper movement of the weight 25 up and down the vertical standards 20 and 21, there is inserted in the bearing holes 30 and 31 bushings 40 (see FIGURE 5). These bushings are cylinders with a circumferential groove 46 and are received in the apertures 30 and 31 in a press fit such that the groove 40' is engaged in the holes 30 or 31. The bushings are preferably made from polymer of tetrafluoroethylene, polytetrafiuoroethylene, into which there has been mixed particles of a silicate such as mica, talc, aluminum silicate, or glass. This type of material is superior to pure synthetic plastic materials for it has superior wear resistance and will not stick against a metal part as is so often the case with such items as nylon and polytetrafluoroethylene. In practice it is found that this bushing material will wipe the metal standards clean of all foreign material and thus enhances the weight operation.

Similarly between the fingers 32 a U-shaped bushing may be fitted. The U-shaped bushing is formed with a peripheral groove 43 which is received between the fingers 32 in a press fit relationship. This bushing 42 also may be made of the same type of material as the bushing 40.

It has also been found that the bushings may vary in form. For instance, a modified form of bushing 42 may be fitted between the fingers 32 (see FIG. 6). This modified bushing 4-2 is similarly provided with grooves 43' around three sides thereof and has a central aperture 45 therein to receive the vertical standard 21. In this case in order to assure alignment at all times the bushing is not press fitted between the fingers 32 but is merely placed therebetween for a sliding fit. Similarly a further modification may be made in that the U-shaped bushing 42 may be completely eliminated and merely the bushings 40 provided as illustrated in FIG. 7. In this latter case the fingers 32 serve to rotationally orient the weight with all sliding friction being present at the bushings 40.

I claim:

1. In a braider carrier having a first standard a second standard extending in parallelism therewith, a tension weight being slidably mounted on the first standard, a pair of fingers carried by said weight and embracing the second standard to guide the weight against rotary movement, said slidable mounting including bushings between the first standard and said weight, said bushings being composed of a polymer of tetrafluoroethylene to which there has been mixed particles of silicate, said bushings exhibiting the property of superior wear resistance and freedom of sliding movement without the necessity of lubrication.

:2. A combination as in claim 1 wherein the fingers receive and hold bushing material composed of a polymer of tetrafluoroethylene.

References Cited in the file of this patent UNITED STATES PATENTS Olson Aug. 13, 1940 Jorgenson May 20, 1958 OTHER REFERENCES Article entitled Basic Design for Bearings Made With Teflon Resins; Duponts Journal of Teflon, March 1960, Vol. 1, No. 3; pages 5, 6, and 7.

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