US2282119A - Film reel - Google Patents

Description

I May 5, 1942.

H. R. DARLING FILM REEL Filed June 20, 1941 FIG.|.

T Ir

7 y 1 wfi I} 14 T ORNEYS HARRY R. DARLING INVENTOR Patented May 5, 1942 FILM REEL Harry R. Darling, Rochester, N. Y., assignor to Eastman Kodak Company, Rochester, N. Y., a corporation of New Jersey Application June 20, 1941, Serial No. 398,945

Claims.

The present invention relates to improvements in reels, and more particularly to reels of the type used with motion picture films.

One object of the invention is the provision of a film reel which is formed entirely from two substantially similarly shaped metal stampings, which, when assembled, are rigidly and permanently connected to form a sturdy, true-running reel.

A further object of the invention is the provision of a reel the hub portions of which are formed from side plates so as to eliminate any locseness or relative play therebetween.

A still further object of the invention is the provision of a reel in which the hub sections are formed from the material of the side plates, and engaged in abutting relation between the side plates and are provided with contacting depending tabs which are electrically welded to retain the reel in assembled relation.

Yet another object of the invention is the provision'of a reel which is simple and rugged in construction, comprises only two parts, is relatively inexpensive to manufacture, and is sturdy rigid and true running.

To these and other ends, the invention resides in certain improvements and combinations of parts. all as will be hereinafter more fully described, the novel features being pointed out in the claims at the end of the specification.

In the drawing:

Fig. l is a plan view of a film reel constructed in accordance with the present invention;

Fig. 2 is a side elevation view of the reel illustrated in Fig. 1, showing the relation of the various parts: and

Fig. 3 is a horizontal sect onal view taken through a portion of the reel illustrated in Fig. 2 and substantially on line 3-3 thereof, but on a larger scale than the latter, showing the relation of the side plates and the hub-forming members stamped out therefrom, and the depending tabs by which the two reel members are rigidly and permanently connected in assembled relation.

Similar reference numerals throughout the various views indicate the same parts.

The film reel of the present invention comprises two substantially identical circular side plates I 0 and II which are stamped or otherwise formed from a strip of sheet metal. Each side plate is formed with a spindle receiving opening I2 adapted to align with a similar opening in the other plate when the parts are assembled, as will be later described. The edges or portions I3 surrounding the openings I2 are adapted to engage a spindle, not shown, to support the reel thereon, as will be readily apparent to those in the art. A plurality of circumferentially arranged spaced hub sections I4, of the shape best shown in Fig. 2,are cut out of each side plate along the straight lines I5 and the curved lines I6, and are connected to the side plates along the sections II. These hub sections I4 are then bent along the sections H to extend at right angles to the inner faces I8 of the plates III and II and to engage, in abutting relation at I9, the sections I4 formed from the opposite side plate, as is best shown in Fig. 3. These abutting hub sections I4 thus meet substantially midway between the side plates I0 and I I, and thus serve to not only space the latter, but to provide a hollow circular hub on which the film strip may be wound, as will be apparent from an inspection of the drawing.

The free or inner end of each section I4 is bent along the line 2| to provide an inwardly extending radial tongue 22 which is adapted to engage and overly a similar tongue 22 formed from the opposite complementary hub section I4, as clearly illustrated in Fig. 3. By securing or clamping these engaging tongues 22 together, the two side plates with their integral hub sections may be rigidly and permanently connected in assembled relation to form a complete reel. Any suitable means may be utilized to thus clamp the tongue 22 in assembled relation. It has been found, however, that by merely applying the electrodes of an electric welding device against the two tongues 22, the latter may be spot welded, as shownat 23, Fig. 3. Such spot weldin forms, in effect, a rivet connecting each pair of tongues 22 to thus retain the reel parts in as sembled relation. This spot welding may, therefore, be defined broadly as a means for connecting the tongues 22 to permanently retain the reel parts in assembled relation. The hub formed, as above described, is spaced radially from the opening I2 and the spindle engaging portions I3, and is connected thereto by a series of radial members or spokes 24 formed by the cutting out of the hub section II, as will be apparent from an inspection of Fig. 2.

A series of flexible spring clips or fingers 26 are cut out of the side plates I0 and II along the lines 21, see Fig. 2. Each of these clips is connected to the side plates Ill and II at 29 and extends toward the film hub and into an aperture 30 formed in one of the hub sections II adjacent the connecting portion H, see Figs. 1

and 3. The free end ii of each clip 26 is arranged to engage the inner edge 32 of the aperture 30 to limit the inward or axial movement of the clips, as will be apparent from an inspection of Fig. 3. The arrangement is such that when the film strip is placed between the plates i and II and on the assembled hub sections I 4, the various resilient fingers 26 will yieldably engage the marginal edges of the film strip to firmly secure the leading end of the strip to the reel hub, as will be apparent.

Bymeans of the above-described construction, the entire film reel may be made entirely of the material of the two side plates, except of course, the welding 23, thus not only materially reduc- 'ing the cost of manufacturing and assembling,

but also entirely eliminating the use of additional parts for retaining the reel in assembled relation. Furthermore, as the hub sections are formed integral with and from the side plates themselves, any tendency to loosen between the hub and side plates is entirely eliminated. The above advantages are not, however, secured at the sacrifice of other desirable features required in a reel of this type. The construction of the present invention provides a reel which is sturdy and rigid, true-running and long-lived, yet is simple in construction and inexpensive to manufacture and assemble.

While one embodiment of the invention has been disclosed, it is to be understood that the inventive idea may be carried out in a number of ways. This application is therefore not to be limited to the precise details described, but is i tended to cover all variations and modifications thereof falling within the scope of the appended claims.

I claim:

1. A film reel comprising a pair of substantially identical side plates formed with central aligned openings adapted to receive a spindle; and portions surrounding said openings and integral with said side plates for engaging said spindle,- hub forming sections stamped from each of said plates radially of said portions and extending inwardly from the inner surface of the plate to abut aligned sections of the other late to form a hollow hub and to space said plates, a tab formed at the inner end of certain of said sections and extending radially inwardly therefrom to overlie a tab formed on an opposite section, and means independent of said portions for individually connecting the overlying tabs to retain the reel in assembled relation.

2. A film reel comprising a pair of substantially identical side plates formed with central aligned spindle receiving openings, hub forming sections stamped from each of said plates radially of said opening and extending inwardly from the inner surface of the plate to abut aligned sections of the other plate to form a hollow hub. said plate having radially extending members between said hub and said openings, a tab formed at the inner end of certain of said sections and extending radially inwardly therefrom to overlie a. similar tab formed on the opposite section, and means for permanently connecting said tabs to retain said reel in assembled relat on.

3. A film reel comprising a pair of substantially identical side plates formed with central aligned spindle receiving openings, a plurality of circumferentially spaced tongue members stamped from each of said plates and bent inwardly from the inner face thereof to abut identical tongues formed from the other plate to provide a hollow hub and to space said plates, the

portions of said plates between the sections from which the tongues are stamped out providing radial spokes which are positioned between the openings and the hub, terminal tabs formed on the free ends of each of said tongues and bent radially to overlie identical tabs formed on the opposite abutting tongues, and means for connecting said tabs to retain said reel in assembled relation.

4. A film reel comprising a pair of substantially identical side plates formed with central aligned spindle receiving openings, a plurality of circumferentially spaced tongue members stamped from each of said plates and bent inwardly from the inner face thereof to abut identical tongues formed from the other plate to provide a hollow hub and to space said plates, the portions of said platesbetween the sections from which the tongues are stamped out providing radial spokes which are positioned between the openings and'the hub, and terminal tabs formed on the free ends of each of said tongues and bent inwardly radially therefrom to engage and overlie a similar tab formed from the opposite tongue, said overlying tongues being connected by spot welding to retain the reel-in assembledrelation.

5. A film reel comprising a pair of substantially identical side plates formed with central aligned openings adapted to engage a spindle to support the reel thereon, a plurality of tongue members stamped out of each plate and bent at an angle thereto and extending toward the other plate to abut substantially midway between said plates, similar tongues bent out from the other plate, securing members formed on the ends of each said tongue members and bent down at the point of "abutment of said tongue members to overlie identical securing members formed on the opposite tongue members, and separate and independent means for individually and permanently connecting each pair of overlying securing members to retain the reel in assembled relation.

- HARRY R. DARLING.

Images