US1929035A - End cap for paper cores - Google Patents

Description

Oct. 3, 1933. A. L. REAGLES END CAP FOR PAPER CORES Filed NOV. 22, 1952 [NVENTOR ATTORNEY Patented Oct. 3, 1933 UNITED STATES PATENT OFFICE END oar ron PAPER corms Application November 22, 1932 Serial No. 643,804

,1 Claim.

My invention is for a new and improved structure of end cap used on tubular paper cores for centrally receiving a driving shaft. For this purpose the cap is constructed of two separate members shaped from sheet metal and rigidly connected together. These two members comprise an outer cap section which fits over the end of the core, and an inner tubular section adapted to receive a shaft or other driving member. The 9 cap section has an integral transverse web, and the tubular section terminates at its inner end in a flat annular flange which is secured to the web of the cap section. This two-part end cap is cheap to make, has little weight, and is sufficiently strong to withstand the highest torque that may develop during the driving operation.

The novel features and practical advantages of my invention will be understood from a description of ,the accompanying drawing, in which- Fig. 1 is an axial cross-section through one end of a core provided with my new cap; and

Fig. 2 is a transverse section on line 22 of Fig. 1.

The cap comprises anouter sleeve 10, an inner sleeve 12, an annular web 13 connecting the outer ends of the sleeves, a transverse web 14 extending from the inner end of the inner sleeve,- and a forwardly projecting hub 15 attached centrally to the web. The parts designated by the numbers 10, 12, 13 and 14 are shaped from a single piece of sheet metal, preferably cold-rolled steel, and the hub 15 is a separate piece also formed of sheet metal. The inner end of hub 15 is turned laterally to form a flat annular flange16 which is secured to one face of web 14 by rivets 1'7 or any other practical means, such as spot-welding, for example. If the flange 16 is attached to the rear side of'web 14, the latter is formed with 40 a central hole 18 through which the hub 15 extends forwardly. The outer end 19 of hub 15 does not project beyond the outer web 13 of the cap and may be substantially flush therewith, as shownin Fig. 1.

The cylindrical hub 15 is adapted to receive one 6 end of a rotary driving shaft (not shown) for winding-a roll of paper on the tubular core' 20 and unwinding it therefrom. The end of core 20 fltsbetween the two concentric sleeves 10 and 12 of the cap, which is secured in place by indenting 65 the outer sleeve 10, as shown at 21, or otherwise;

.The driving shaft is inserted into the hub 15 and attached thereto in any practical way, as by pins passing through holes 22 in the hub. The shaft may be left in the hub 15 after it is once attached. 70 The annular flanges 16 and the adjacent section of web 14 form a double-walled ring which materially increases the torque-resisting power of the core.

My invention is not limited to the details set forth, for various changes and modifications are possible within the scope of the appended claim.

.I claim as my invention:

An end cap for paper cores, said cap 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 and to be secured thereto, a transverse web extending integrally from the inner end of the inner sleeve, said sleeves and two webs being shaped from a single piece of sheet metal, the space between said two webs forming an inner recess of the cap, a separate tubular hub of sheet metal provided at its inner end with an integral annular flange turned outwardly, said flange lying flat against one face of said transverse web and being secured thereto in central position, said hub extending forwardly from said transverse web and being housed within saidreoess.

ANNIE L. REAGLES.

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