US1929033A - End cap for paper cores - Google Patents

Description

Oct. 3, 1933- A REAGLES 1,929,033

END CAP FOR PAPER CORES 7 Filed April 1, 1932 INVENTOR @m/& L Peg/es ATTORNEY Patented Oct. 3, 1933 UNITED STATES 1,929,033 1 7 END CAP FOR PAPER corms Annie 77L. Beagles, Corinth,

Y., assignor to Elixman Paper Core Co.,Inc., Corinth, N. Y. a corporation of Newlfork Application April 1, 1932. Serial No. 602,460 2 Claims. (Cl. 242-68) This invention is for a new and improved end cap for paper cores of large diameter. It is well known that rolls of paper from the mills are' wound on tubular cores, usually of paper, and these cores have always been provided with metal caps for connection with a driving shaft. In cores of small diameter, the caps are notched at the rim to receive a driving lug, but this arrangement is not practical for cores of large size, in which the driving connection should be central. For this purpose, core manufacturers have heretofore found it necessary to provide these large cores with metal plugs having a square hole at the center into which a squaredriving shaft is inserted. These plugs are comparatively'heavy and expensive, two practical objections which my invention successfully overcomes.

My new end cap for large'cores is a sheet metal member with outer and inner sleeves, between which the end of the core is received in a tight fit. The inner end of the inner sleeve carries an integral disk or web which has a non-circular (usually square) hole at the center for receiving a similarly shaped driving shaft. The metal of the disk or web around the hole is bent back to form flanges which afford a broad bearing surface for the shaft, and it is preferable to attach a reinforcing washer of steel to one face of the web. This washer has a hole fitting over the flanges on the web, whereby these flanges are considerably strengthened to withstand the torque of the driving shaft.

My invention will be fully understood from a detailed description of the accompanying drawing, in which Fig. 1 is an axial section through my new cap in position on a'core; and

Fig. 2 is a. transverse section on line 2-2 of Fig. 1.

The cap comprises an outer sleeve 10, an inner:

sleeve 12, an annular web 13, and a disk or web 14. These parts are shaped from a single piece of sheet steel or other practical material. The,

sleeves 10 and 12 are properly spaced to receive the end of a tubular core 15 in a tight fit, and the cap is locked to the core in any practical way, as by being indented at 16. The web 14 is provided with a central opening 17 of non-circular shape, preferably square. The metal around the opening 17 is bent back to form fiat flanges 18, which provide ample bearing surface for a driving shaft inserted through hole 17. 'As a further means for strengthening the metal around this driving hole, I attach a heavy metal washer 19 to the back side of web 14. The washer 19 has an opening so shapedthat the washer fits snugly I may extend almost to the thus far. fully demonstrated,

' one face of said disk, said washer washer 19 is attached in any practical way, as by rivets 20 or by spot welding.

In practice the diameter of my new cap will vary from eight inches for large paper cores to five inches for the smaller cores. I give these figures not as limitations" of my invention, but merely to indicate the size of cores actually in use. The driving hole 17 may vary from 1 inches to'2 inches across, but these figures are merely illustrative. The reinforcing washer 19 outer periphery of web 14, as in the example shown in the drawing, but in caps of larger diameter it need not extend Invarious caps that I have successthe washer 19 has a diameter of aboutfour inches, both for normal-sized and extra-large caps. In normal-sized caps, where the corners 21 of the'square hole 17 extend very closeto the innercylindrical sleeve 12, as shown in Fig. 2, the washer 19 may be omitted, because the proximityof sleeve'12 to the corners 21 acts as a reinforcement which prevents tearing of the hole at the corners.

Although I have shown and described a specific structure, I want it understood that my in vention is not limitedtothe exact details set forth. Changes and modifications may be made within the scope of theappended claims.

- .I claim as myinvention:

1. An end capfor tubular cores, comprising a pair of spaced sleeves connected at their outer ends by an integral web, said sleeves being adapted to receive the end of a core in a tight fit, a disk or web formed integral with the inner end of said inner sleeve and having a polygonal hole at the center, the corners of said hole being so close to the inner sleeve that the latter acts as areinforcement to prevent tearing of the hole at the corners, and integral flanges on said disk or pair of spaced sleeves connected at their outer ends by an integral web, said sleeves being adapted to receive the endof a core in a tight fit, a disk. or web vformed integral with the inner end of said inner sleeve and having a non-circular hole at the center, integral flanges on said disk or web around said hole and projecting axially of the core, whereby said flanges provide broad bearing surfaces for a driving member inserted in said hole, and a reinforcing washer secured to having a hole shaped to fit over said flanges.

. ANNIE L. REAGLES.

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