US2774550A - Strand tension device - Google Patents

Description

Dec. 18, 1956 A. F. PIEPER I 2,774,550

STRAND TENSION DEVICE Filed Aug. 15, 1955 INVENTOR. W 2 ALPHONSE E PIEPER HIS 7708MB United States PatentQ i ce STRAND TENSION DEVICE Alphonse F. Pieper, Brighton, Y. Application August 15 1955, SerialfNo. 528,314

4 Claims. (Cl. 242-154) This invention relates to a strand tension device, with more particular reference to the type of construction in which a pair of guide arms or posts of refractory material are mounted in a holder which is rotatable to vary the tension exerted on the yarn or strands traveling between and over the guide arms, and has for its purpose to afford a simple, practical, and efficient means for securing the guide arms in the holder.

More specifically, the invention is intended to provide removable guide arms that can be inserted into a metal or other holder and held securely in position for proper functioning in the machine.

Much difiiculty has been experienced in attaching removable arms of refractory material securely in a holder, and an additional purpose of the invention is to provide means particularly adaptable for use with removable guide arms or posts formed of refractory or ceramic material baked at high temperatures, which can be fastened rigidly in the holder and securely held without danger of fracturing or damaging the ceramic arms.

To these and other ends, 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 specification.

In the drawings:

Fig. l is a plan view showing a preferred embodiment of the invention;

Fig. 2 is a view in end elevation;

Fig. 3 is a sectional view on line 3-3 of Fig, 2 looking in the direction indicated; 7

Fig. 4 is a sectional view on line 44 of Fig. 1, looking in the direction indicated, and

Fig. is a sectional view on the line 5-5 of Fig. 1, looking in the direction indicated.

The invention has to do more particularly with means for detachably fastening ceramic or refractory arms or posts in a holder for use in a strand tensioning mechanism and is intended to permit posts of the type mentioned to be secured tightly in a metal or other holder,

and easily removed for replacement if necessary.

Referring more particularly to the drawings in which like reference numerals refer to the same parts throughout the several views, 1 designates a metal or other holder having a reduced neck portion 2 by which it is mounted on a supporting plate, as shown in the above mentioned pending application, the holder 1 being provided with a pair of cylindrical openings to receive the cylindrical guide arms or posts 3 and 4 which are constructed of refractory or ceramic material of such hardness as to resist wear from the strands or yarn passing continuously thereover.

The body of the holder 1 is provided with another cylindrical opening 5 extending therethrough perpendicularly or transversely to the posts 3 and 4 and to the openings in which they are mounted, the opening 5 in-' tersecting partially the openings in which the cylindrical posts 3 and 4 are positioned so that the latter when arranged in theholder extend partially into the opening 5, as appears in Fig. 5.

The opening 5 is threaded at one end as indicated at 6 to receive a threaded plug 7 that has a cup-shaped inner'end 8 for engagement with the convex outer end 9 of a tapered pin 10 which is preferably formed of nylon, but may be of other suitable plastic or slightly elastic or compressible material, such that when forced inwardly between the convex surfaces of the refractory posts 3 and 4, the nylon tapered pin engages the adjacent surfaces of the cylindrical arms 3 and 4 and forces them tightly against the surrounding surfaces of the holder and thus secures them rigidly in the holder.

The tapered pin 10 extended transversely of the cylindrical arms 3 and 4, and its convex periphery engages the convex peripheries of the contacting arms 3 and 4 in perpendicular relation thereto, the surface of the tapered pin being slightly indented by the pressure against the arms, and the nylon pin is retained in rigid engagement against the ceramic arms by the threaded plug 7, the inner end of which overlies and engages the convex outer end of the nylon tapered pin.

In assembling and fastening the ceramic arms in place, they are inserted into the cylindrical openings in the metal holder in the positions illustrated in Fig. 3, preferably with the threaded end of the opening 5 on top, and held while the tapered pin is inserted into the opening with its small end entering between the adjacent surfaces of the ceramic arms, after which the plug 7 is threaded into the opening 5 until it forces the tapered pin downwardly into tight engagement with the ceramic arms, which are thus held securely against the surrounding walls of the holder, and cannot be removed until the threaded plug 7 is loosened to permit removal of the tapered nylon pin.

In this manner the ceramic arms are held securely in the metal holder without danger of fracturing or damaging, and can be quickly removed at any time if required for replacement. The ceramic arms can be produced in any degreeof hardness and instantly assembled in the holder. in a manner that protects them effectively against accidental breakage or damage due to their attachment to the holder.

While the inventionhas been described in its relation to the particular construction shown, it is not confined in this respect, and this application is intended to cover any modifications or departures coming within the purposes of the improvement or the scope of the following claims. I

I claim: p

1. In a strand tensioning means, a support including a pair of spaced parallel cylindrical openings and a pair of cylindrical arms of refractory material removably positioned in said openings, said support having another opening located between and transversely of and partially intersecting the first mentioned openings, a'tapered nylon 'pin removably positioned in said other opening engaging the peripheries of said arms, and a threaded plug in said other opening engaging the nylon pin and acting to force the pin against said arms.

2. In a strand tensioning means, a support including a pair of spaced parallel cylindrical openings and a pair of cylindrical arms of refractory material removably positioned in said openings, said support having another opening located between and transversely of and partially intersecting the first mentioned openings, a tapered pin of slightly elastic material removably positioned in said other opening engaging the peripheries of said arms, and

Patented Dec. 18, 1956,

fastening means in said other opening engaging the elastic pin and acting to force it against said arms.

3. In a strand tensioning means, a support including a pair of spaced parallel cylindrical openings and a pair of cylindrical members removably positioned in said openings, said support having another opening located between and transversely of and partially intersecting the first mentioned openings, a tapered pin removably positioned in said other opening engaging the peripheries of said cylindrical members, and fastening means in said other opening engaging said tapered pin and acting to force it against said cylindrical members.

4.- In a strand tensioning means, a support including a pair of spaced parallel cylindrical openings and a pair of cylindrical members removably positioned in said opening, said support having another opening located between and transversely of and partially intersecting the first mentioned openings, and a tapered pin removably positioned in said other opening and lockingly engaging the adjacent surfaces of said cylindrical members.

References Cited in the file of this patent UNITED STATES PATENTS 806,555 Mitchell 5. Dec. 5, 1905 838,046 McKean Dec. 11, 1906 1,459,332 Hineline June 19, 1923

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