US3049318A

US3049318A - Bail rod sleeve for strand tension device

Info

Publication number: US3049318A
Application number: US11194A
Authority: US
Inventors: Robert L Carroll
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-02-26
Filing date: 1960-02-26
Publication date: 1962-08-14
Anticipated expiration: 1979-08-14

Description

Aug. 14, 1962 R. L. CARROLL 3,049,318

BAIL ROD SLEEVE FOR STRAND TENSION DEVICE Filed Feb. 26, 1950 ROBERT L. CAR/POLL INVENTOR.

ATTORNEY United tates Patent Office 3,049,318 Patented Aug. 14, 1962 3,049,318 BAIL ROD SLEEVE FOR STRAND TENSION DEVICE Robert L. Carroll, 408 McIver St., Greenville, S.C. Filed Feb. 26, 1960, Ser. No. 11,194 4 Claims. (Cl. 242-457) This invention relates to a bail rod sleeve for a strand tension device, and has for its purpose to provide a bail rod sleeve of ceramic or refractory material which is an improvement on the conventional metal sleeve now employed for the purpose.

The bail rod in question is a part of a conventional strand or yarn tension mechanism such as employed in connection with textile machinery, and the invention has for its purpose to eliminate the wear imposed by yarn or thread on a metal sleeve by substituting a sleeve of ceramic or refractory material which will wear indefinitely without being affected by the strands passing over the contacting surface, and a further purpose is to afford a ceramic sleeve that is constructed in such fashion as to enable the strand or yarn to be readily threaded into operating position in relation to the guide sleeve and in contact therewith. I

The sleeve functions as a guide for the yarn and for this purpose incorporates lugs or flanges at its ends between which the yarn is confined and guided during travel in contact with the sleeve, and it becomes necessary in threading the yarn into the machine before starting the operation to move the warn from the bail rod over the lug or flange at one end of the sleeve without trapping or stopping the yarn against the end of the sleeve at the point where it initially comes in contact with the sleeve, and a particular purpose of the invention is to so construct the sleeve and lug or flange at this point as to insure against the yarn being trapped or locked against the end of the sleeve and to readily effect its movement over the lug or flange and into feeding position between the flanges at opposite ends of the sleeve.

The sleeve has a longitudinal opening to receive the bail rod, and each lug or flange at the ends of the sleeve is provided with a beveled or inclined outer surface that extends at an angle approximately 45 to the longitudinal axis of the opening through the sleeve. This inclined surface extends from about the vertical center of the opening to beneath the bottom of the opening and intersects the lower part of the opening on an angle of approximately 45 to the longitudinal axis of the sleeve. This results in a wall interposed in the path of the yarn as it is threaded over the lug or flange into feeding position that is at an acute angle to the direction of movement of the yarn, and thus facilitates its movement into the desired position in the guide or sleeve, with nothing to obstruct such movement.

If the ends of the sleeve were not inclined but had straight perpendicular surfaces from top to bottom, the yarn when being threaded or positioned would come in contact with such perpendicular surface at the end of the sleeve and adjacent to the bail rod and the perpendicular surface would act to trap or hold the yarn at this point, whereas according to applicants structure the sleeve ends are beveled or inclined forming a plane surface that intersects the longitudinal axis of the opening in the sleeve at an acute angle, so that when the yarn or strand is passed under the flange or lug on the sleeve, it does not engage or contact the sleeve initially at a single central point, but contacts two spaced inclined surfaces on opposite sides of the center of the opening at points somewhat below the center of the opening in the sleeve, and the yarn readily travels down over these inclined surfaces on opposite sides of the bail rod without any chance of its being trapped or held by the bail rod. The yarn can thus easily be moved over the flange on the sleeve until it is in operative position on the inner side of the lug or flange of the sleeve and ready to be fed through in the usual manner.

With these objects in view, the invention consists in the construction and arrangement of parts that will appear clearly from the following description when read in conjunction with the accompanying drawings, the novel features being pointed out in the claims following the specifications.

In the drawings:

FIG. 1 is a view in side elevation of a bail rod sleeve constructed in accordance with a preferred embodiment of the invention and showing the sleeve fastened to the bail rod of a conventional tension mechanism, the parts shown in phantom being conventional and of the general form illustrated in Patents 2,622,305, Swanson, December 23, 1952, and 2,691,810, Goodhue et al., October 19, 1954.

FIG. 2 is a bottom plan view of the sleeve;

FIG. 3 is a longitudinal sectional view taken centrally on the line 33 of FIG. 2, and

FIG. 4 is a transverse sectional view on the line 4-4 of FIG. 2.

Referring more particularly to the drawings in which like reference numerals refer to the same parts throughout the several views, 1 designates a body of ceramic or refractory material including a fiat top, a bottom surface 2 that is convexly curved transversely between the lugs or guiding flanges at the ends of the body, said lugs being indicated generally at 3 and including perpendicular top portions 4 at the ends of the body, bottom portions 5 at the ends of the convexly curved bottom surface 2, and beveled or inclined surfaces 6 connecting the top and bottom end portions 4 and 5 and arranged at an angle of approximately 45 to the longitudinal axis of the opening 7 that receives the bail rod upon which the sleeve is mounted and to which it is permanently aflixed by a suitable cementing medium to hold it in place on the bail road in the position generally illustrated in FIG. 1.

It will be understood that the ceramic sleeve is arranged on the bail rod similarly to the metal sleeves heretofore employed for the purpose and that the yarn travels under the sleeve in contact with the bottom curved surface 2 as shown in FIG. 1, similarly to the travel of yarn under the conventional metal sleeve heretofore used.

8 designates the bail rod to which the ceramic sleeve is secured before attaching the bail rod at its ends to the frame of the tension mechanism, and to thread the yarn into operative position under the ceramic sleeve, the yarn is initially threaded through the apparatus under the bail rod 8 as shown in dotted lines in FIG. 1. The operator then grasps the yarn at two points and moves it toward the end of the sleeve until it engages the inclined surfaces 6 below the center of the bail rod and on both sides thereof, see FIG. 1. The yarn is thus guided downwardly over the inclined surfaces 6 until it has passed over the bottom of the lug and is then in position to be retained between and guided by the lugs 3 and bottom surface 5 of the sleeve.

During this positioning of the yarn within the confines of the sleeve guide, the yarn at no point can contact the sleeve along a continuous surface perpendicular to the bail rod and adjacent to the bail rod since as it travels over the bail rod While being moved by the operator over the inclined surfaces of the sleeve, it necessarily initially contacts the sleeve at two points on opposite sides of the rod as determined by the two inclined surfaces on opposite sides of the rod beneath the center 3 thereof. Thus there is no possibility of the yarn being trapped or held by the sleeve at this point as would be the case if the sleeve were formed without the incline surfaces described and had only an end surface perpendicular to the longitudinal axis of the sleeve.

The structure affords an efiicient and practical device enabling faster and more efficient operation of yarn feeding mechanism where it is necessary to preliminarily thread or position the yarn in operative relation to a guide member or sleeve arranged on a bail rod or the like requiring movement of the yarn by the operator over one end of the sleeve guide, and while the invention has been described in relation to the particular form disclosed, it is not confined to the details herein set forth and this application is intended to cover such changes or modifications as may come within the purposes of the improvement or the scope of the following claims.

I claim:

1. A bail rod sleeve comprising a ceramic body having a top surface and a bottom convexly curved surface that is straight endwise and extends transversely of the body, the body having a cylindrical opening therethrough which receives a bail rod, lugs at the ends of the body, top and bottom vertical surfaces defining the lugs, and inclined end surfaces connecting said top and bottom vertical surfaces and extending at an angle of approximately 45 to the longitudinal axis of the opening in the sleeve from a point at approximately the vertical center of said opening to a point below the bottom of said opening in the sleeve, and said inclined end surfaces extending substantial distances above and below the bottom of said opening in the sleeve, the lower inclined surfaces being slightly greater in length than the upper inclined surfaces.

2. A bail rod sleeve comprising a ceramic body having a top surface and a bottom convexly curved surface that is straight endwise and extends transversely of the body, the body having a cylindrical opening therethrough which receives a bail rod, lugs at the ends of the body, top and bottom vertical surfaces defining the lugs, inclined end surfaces on said lugs connecting the top and bottom vertical surfaces and extending at an angle of approximately to the longitudinal axis of the opening in the sleeve from a point somewhat below the upper part of said opening to a point below the bottom of said opening, said inclined surfaces extending substantial distances above and below the bottom of said opening in the sleeve, the lower inclined end surfaces being slightly greater in length than the upper inclined end surfaces.

3. A bail rod sleeve comprising a ceramic body having a top surface and a bottom convexly curved surface that is straight endwise and extends transversely of the body, the body having a cylindrical opening therethrough which receives a bail rod, and lugs at the ends of the body, top and bottom vertical surfaces defining the lugs, inclined end surfaces on said lugs connecting the top and bottom vertical surfaces and extending at an angle of approximately 45 to the longitudinal axis of the opening in the sleeve from a point at least slightly higher than the vertical center of said opening to a point below the bottom of said opening, said inclined end surfaces extending substantial distances above and below the bottom of said opening in the sleeve, the lower inclined end surfaces being slightly greater in length than the upper inclined end surfaces.

4. A bail rod sleeve comprising a ceramic body having a top surface and a bottom convexly curved surface that is straight endwise and extends transversely of the body, the body having a cylindrical longitudinal opening therethrough which receives a bail rod, end surfaces on the body that are inclined at an angle of approximately 45 to the longitudinal center of said opening, said inclined end surfaces extending substantial distances above and below the bottom of said opening engaging the yarn at spaced points on opposite sides of the rod and acting to guide the yarn downwardly without trapping it at any point of engagement with the sleeve.

References Cited in the file of this patent UNITED STATES PATENTS 2,123,948 Howorth July 19, 1938 2,622,305 Swanson Dec. 23, 1952 2,691,810 Goodhue et al. Oct. 19, 1954