US1925042A

US1925042A - Spool

Info

Publication number: US1925042A
Application number: US596180A
Authority: US
Inventors: George H Bird
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-03-02
Filing date: 1932-03-02
Publication date: 1933-08-29
Anticipated expiration: 1950-08-29

Description

Aug. 29, 1933.

G. H. BIRD SPOOL Filed March 2, 1952 A TTORNEYS.

Patented Aug. 29, 1933 i j 1325p;

entree TATES PATENT 7 SPOOL George H. Bird, Brooklyn, N. Y.

Application March2, 1932. Serial N0. 596,180

'4 Claims. (01. 242-123 a This invention relates in general to spools and F e is a s lar View Showing the fastenparticularly to spools for ribbon and the like. ing disc attached to the core. Such spools usually include a hollow or tubular Figure 11 i an nd view of another form of core of penetrable material. such as cardboard, 1 0 em y t v nt o 1 a 5 and end flanges on the extremities of the core Figure 12 is afragmentary longitudinal vertical 0 for retaining the ribbon or the likeon the spool. sectional view through one end thereof taken'on vOne object of my invention is to provide a the 1ine-l2l2 of Fi spool of this character embodying novel andim- Figure 1 s a m la V ew ow the manner proved features of construction for connecting 0 atta ngli e fastening C1 o t ethe end flanges to the core. Figure l l is .an end View of a further modifica 5 Another object is to provide means for connecttion of the invention. ingend flanges to a core in a spool of this .char- Fig re i a fra men ary v rtic l l n i n acter comprising a single piece or disc of sheet Sectio al View 011 the ne 1 -15 0 F e metal having lugs or prongs to extend into and and, y

15 penetrate the interior of the core, the prongs Figure 16 s a lar V w Showing the a e being forced into the core by deformation of the of attaching the fastening d to the disc after the latter has been applied to the ends p c fi a y, describing the embodiment of the of. the core. 7 invention illustrated in Figures 1 to 5 inclusive,

Other objects are to providesuch aspool which the spool comprises a tubular core 1 formed of 20 h substantially fiat ds without any material suitable material such as. cardboard, and the ref- 75 projections, so that the spools may be conerence characters 2 des'ignate'endflanges for the veniently arranged in stacked relation end to core which have central openi a 0f a d a end, and to obtain other advantages and results eter somewhat less than the internal diameter of as will be brought out by the following descripthe core. These end flanges are. secured to the tion. ends of the core by fastening discs 3 each of which 9 Referring to the '-accompanying drawing in comprises a single sheet of metal originally conwhich corresponding and like parts are desigcave-convex, in cross section. Each disc has nated by, the same reference characters throughstruck up there from a-plurality of prongs 4 the out the several views, bases of which are spaced from the center of the Figure 1 isan end View of a spool embodying disc a distance somewhat. less than the internal 3 my invention. radius of the core Each prong has an'rout- Figure 2 is a vertical sectional view through turned pointed end 5 and extends. in the direc-. the spool with portions of the end flanges broken tion of the periphery of the disc 3, and the. prongs away. U project from the concave side of the disc,so that Figure 3 is a similar view showing the manne they may be easily slipped into thecore from one 0 of applying the fastening disc. end thereof. f

Figure 4 is a transverse sectional view on the In assembling the end flanges and fastening line 4-4 of Figure 2. V V discs on the core, an end disc 2 is placed against Figure 5 is a similar View on the line 55 of one end of the core, after which a fastening disc 40 Figure 2. 3 is placed against the outside of the end disc Figure e-is longitudinal vertical sectional with the prongs 4 projecting into the cora -asview through a modification of the invention indicated in'Figure 3 013, the drawing. Then the wherein the fastening disc itself serves as an end central portion of the fastening disc is pressed flange, and showing the manner of inserting the inwardly of the core as shown in Figure 2 of the 00 fastening disc into the core, one'fastening disc drawing. Due to the original concavo-convex a being omitted. shape of the fastening disc, when the central por- Figure l is a similar view showing the fastening tion is so pressed inwardly of the core, the pointed disc secured to the core. ends 5 of the prongs are swung outwardly away Figure sis an end view of a modification of from the center of the disc and caused :to penethe invention.- trate the interior surface of the core, as clearly Figure 9 is a fragmentary vertical longitudinal shown in Figure 2 of the drawing. The central sectional view through the construction shown portion of the disc thus become concavo convex in Figui-e 8 taken on the line 9-9 of Figure-8, reversely to its original form and the prongs i and showing the manner of applying the fastenproject from the convexside of said central poring disc to the core. tion. The fastening discs are'thus firmly secured 3 to the core and clamp the end discs 2 between themselves and the core.

To prevent rotation of the end discs, each disc may be formed at the edges of its opening with notches 6 to receive the prongs 4, as shown in Figure 4. The prongs and fastening disc being non-rotatably secured to the core and interlocking with the discs through the prongs 4 and notches 6, effectually prevent rotation of the end flanges.

A modification of the invention is shown in Figures 6 and '1 wherein the fastening discs themselves serve as end flanges for the core. In this form of the invention, the fastening discs are made of a diameter greater than that of the core, and the end flanges 2 are omitted. The fastening discs are secured .to the core in exactly the same manner as described in connection with Figures 1 to 5 inclusive.

A further modification of the invention is shown in Figures 8 to 10 inclusive where the fastening discs 7 serve as the end flanges for the core 8 and the fastening discs have stamped therefrom right-triangular ears 9 each having one arm radial of the disc and its base facing in the direction of the periphery of the disc. Each ear 9 also has 2. prong 10 projecting from its base. The fastening discs are originally concave-convex in cross-section, and the ears 9 are so located that the bases are spaced from the center of the disc a distance slightly less than the radius of the interior of the core so asto easily slip into the end of the core.

In attaching the fastening discs to the core, the ears are slipped into the core until the fastening disc abuts the end of the core whereupon the central portion of the disc is pressed inwardly of the core so as to cause the ears 9 to swing outwardly toward the inner surface of the core which results in penetration of the core by the prongs 10 as shown in Figure 10 of the drawing. The fastening discs are thus firmly secured to the core by the prongs 10, and the ears 9 serve as supports for the core on the fastening discs, the bases of the ears snugly fitting against the inner surface of the core.

Another spool embodying a modification of the invention is shown in Figures 11 to 13inclusive. Here the fastening discs 12 are in general the same construction as the fastening discs 3 being concavo-convex in cross-section and having prongs 13 to engage the inside of the core 14. An annular shoulder 15 of a diameter substantially equal to the interior diameter of the core is formed on the concave side of each disc for supporting the core on the discs. These discs 12 are applied to, the core in the same manner as are the discs 3, and the shoulder 15 provides a positive support for the core in addition to the prongs13.

Figures 14 to 16 inclusive show another form of spool embodying a modification of the invention. In this form of spool the fastening discs 16 are originally flat and have prongs v1'7 struck-up therefrom at one side to originally slip easily into the core 18. After a disc has been placed against the end of the core as shown in Figure 16, a suit able tool is forced through the apertures 19 formed by the stamping of the prongs so as to force the prongs outwardly toward the periphery of the disc and into the inner surface of the core. In all forms of the invention the fastening disc periphery has 'a central opening 20 toreceive a spindle upon which the spool may be mounted for winding and unwinding material on or from the spool, and preferably an integral inturned annular flange is provided at the edge of the opening to reenforce the central portion of the disc.

It will be observed that in all forms of the invention, the ends of the spool are substantially flat, so that the spools may be firmly stacked in endwise relation. The fastening means comprises a single piece of metal and may be secured to the core of the spool by a simple operation. Accordingly, a spool embodying the invention can be made quickly and economically, and at the same time will be strong and durable.

It will be understood that the end flanges 2 may be used in any form of the invention, according to the purpose for which the spool is to be used.

While I have shown and described the invention as embodied in certain details of construction it should be understood that many modiflcations and changes may be made in the construction of the spool without departing from the spirit or scope of the invention.

Having thus described my invention, what I claim-is:

1. A spool comprising a tubular core of penetrable material, end flanges therefor, and a fastening device securing each end flange to one end of said core, said fastening device comprising a metal disc overlying said end flange and having a concavo-convex central portion with a circular row of prongs projecting from the convex side thereof and penetrating the interior walls of said tube, said disc having initially been reversely concavo-convex in cross-section with said prongs projecting from the concave side thereof and at a distance from the center of the disc less than the radius of the interior of said tube, and the central portion of said disc having been pressed inwardly of said core to swing said prongs toward the periphery of the disc and cause the prongs to penetrate the interior walls of said core. a

2. A fastening device for securing end flanges on a tubular core of penetrable material, comprising a concavo-convex metal disc having a circular row of prongs projecting from the concave side thereof and spaced from the center of the disc a distance slightly less than the radius of the interior of said tubular core, so that by placing said disc against the end of said core with said prongs extending into the core and pressing the central portion of said disc inwardly of said core, said prongs will be swung toward the periphery of the disc and will penetrate the interior walls of said core.

3. The spool set forth in claim 1 wherein said end flanges have central openings somewhat smaller in diameter than the interior of said core, and the edges of said openings are formed with notches to receive said prongs to prevent rotation of said end flanges on the core.

4. A fastening device for securing end flanges on a tubular core of penetrable material, comprising a concavo-convex metal disc having a plurality of right triangular ears stamped therefrom and projecting from the concave side thereof with one leg of each triangular ear substantially radial of said disc, the bases of said earsbeing spaced from the center of the disc a distance substantially equal to the radius of the interior of said core and having prongs projecting therefrom.

GEORGE H. BIRD.