US2149567A - Hold-up for textile machinery - Google Patents

Description

March 7, 1939. v H. M. BACON 2,149,567

HOLD-UP FOR TEXTILEMACHINERY Filed Feb. 18, 1958 INVENTOR HENRY M. Bfl'ON.

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A TTORNE YS Patented Mar. 7, 1939 PATENT GFFlCE noLn-ur non. TEXTILE momma Henry M. Bacon, Dayton Rubber ton, Ohio, a

Dayton, Ohio. asaignor to The Manufacturing Company, Daycorporation of Ohio Application February 18, 1938, Serial No. 191,285

4 Claims.

My invention relates to holdups for textile machines.

It is the object of my invention'to provide a holdup of suitable materials with rounded, compressed edges so shaped and formed to prevent the holdups from cutting through the lug straps, thereby reducing the life of the lug straps. On the harder type of materials, such as fiber and fabric bonded with hard rubber composition, the lug straps are cut through quickly, causing premature lug strap failure. 1

It is the object of this invention to provide a full molded holdup, preferably of fabric bonded with rubber composition, which is die-cut to shape and then vulcanized in a mold so that all cutting after vulcanization is eliminated. All threads and fibers, therefore, remain sealed as a result of the vulcanizing operation.

It is an object to provide a holdup with molded compressed edges that are smooth and rounded at all lug strap contact points, thus providing a rocking and rolling contact between the holdup and the lug strap.

It is a further object to subject the curved sections having the rounded edges to greater vulcanizing pressure to make such edges of greater density in order to have greater resistance to wear, so that the fabric layers are forced into a curve forming'the curved edges so that the lug straps will wear along the fabric surface and not across the fiber ends. I

It is an object to thereby secure a marked increase in service life, both of the holdup and lug strap.

It is an object to provide a holdup that will require less adjustment due to wear in,the weaving room.

Referring to the drawing:

Figure 1 shows a design of mold bottom plate.

Figure 2 is a side elevation thereof.

Figure 3 illustrates the design for the mold 1 body cavity.

Figure 4 illustrates an end elevation bottom plate.

Figure 5 is aside elevation of the holdup placed in position in the lug strap.

Figure 6 is an end elevation of the holdup and lug strap.

of the mold Figure 7 is an end elevation of the holdup showv ing the rounded edges which engage with the lug strap.

Figure 8 is a side elevation thereof showing the nature of the compressed fabric edges showing how they are turned on their edges so that the wear will be upon their surface rather than on their edges.

Figure 9 is a section on the line 9-9 of Figure 7 showing a similar condition of the edges with the fabric following the curvature of the edges. 5

Figure 10 is a. section on the line ll0 of Figure looking in the direction of the arrows showing the interlocking rocking arrangement between the holdup and the lug strap.

Figure 11 is an enlarged view on the line 9-9 of Figure 7 showing the arrangement of the fibers and fabric layers on the curved corners of the vertical portion of the holdup.

It will be understood that the Ii-shaped construction shown inFigure 7 is formed by super- 15 imposing layers of fabric and resilient material and then shearing to shape. Thereafter it is molded and vulcanized, the molding serving to place the layers of fabric in the positions hereinafter indicated. Referring to the drawing in detail, the mold shown in Figures 1, 2, 3 and 4 are utilized for molding the holdup out of the plate of stock of superimposed layers of fabric bonded with rubber.

As a result of the molding operation, the holdup of the outline shown in Figure 7 is produced. This holdup consists of a head section I, a body portion 2 and an intermediate portion 8. Rounded surfaces 4, 5 and ii are so arranged that the fabric is turned over and molded due to the pressure of molding with the surfaces of the fabric parallel to the rounded surfaces t, 5 and 6 as illustrated in Figuresv 8 and 11. In this way any wear upon these rounded surfaces is upon the surface of the fabric rather than upon the ends thereof, with correspondingly long life and smoothness of operation. The U-shaped lug strap 1 passes on either side of the vertical portion 3 of the holdup and is adapted to engage both with the surfaces 5 and the surfaces 4 and 6. This 40 provides a long wearing rocking engagement between the holdup and the lug strap.

It will be understood that the unvulcanized material is molded to shape by the 'molds illustrated. The mold in Figure 3 designated 8 molds the holdup body according to the configuration of the outline 9. The side portions on either side of the vertical portion 3 are molded by the use of the mold portion I 0 and the portion II. Thereafter the unvulcanized material so formed is vul-' canized. By eliminating the shearing after vulcanization, all the threads and fibers remain sealed and protected from extreme humidity in the weaving room. This results from first cutting the unvulcanized material to shape and then u pressing it in the mold and nnvulcanizing it so as to seal the entire structure against the attacks of extreme humidity.

It will be understood that any other type of material, such as leather or fiber bonded with glue, synthetic resins, balata or other materials may be utilized. The principle of my invention is adaptable to a variety of materials but I prefer layers of fabric and rubber molded and vulcanized as indicated.

I thereby eliminate the exposing of the ends of the fabric, eliminate grinding or buihng the edges, and eliminate any special guards which have heretofore been unsuccessfully attempted as a solution of this dlillcult problem of cutting through of the lug strap through the holdup.

It will be understood that I desire to comprehend within my invention such modifications as come within the scope of the claims and the invention.

Having-thus fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A new article of manufacture for use as a lug strap holder comprising a laminated body of rubber and fabric layers comprising horizontal portions and an interconnecting narrow vertical portion, said vertical portion and edges having rounded edges and the adjacent edges of the her izontal portions having rounded edges, said edges being formed by compressing the fabric layers to cause them to curve in parallel to the contour of the edges.

2. In combination, a lug strap holder having lug strap engaging surfaces rounded where said edges engage with the lug strap, said rounded edges consisting of compressed layers of fabric curved to conform to the configuration of the edges.

3. A new article of manufacture comprising a lug'strap holder having rounded edges where the holder engages with the lug strap, said holder being formed of a plurality of layers of fabric and rubber compressed, molded and vulcanized after shearing so that the layers of fabric are concentrated in the curved portion of said rounded edges to present the surface of the fabric for engagement with the lug strap.

4. In a method of manufacturing lug strap holders, arranging a holder body comprising laminated fabric bonded with resilient material. shearing said material into the form of a holder, and vulcanizlng said holder while compressing the layers of fabric forming the working surface edges of the holder so as to produce rounded surfaces comprising concentrated layers of fabric.

HENRY M. BACON.

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