US2656772A - Film packet - Google Patents

Description

Oct. 27, 1953 A KURNlCK ET AL 2,656,772

FILM PACKET Filed Feb. 11, 1950 2 Sheets-Sheet l INVENTORS ABRAHAM KURN/CK LOU/S BROW/VSTE/N 43 L123 2a 44 BY FIG. 2. H613.

ATTORNEY Oct. 27, 1953 Filed Feb. 11, 1950 A. KURNICK ET AL FILM PACKET 2 Sheets-Sheet 2 44 F/G. l3.

INVENTORS A BRA HAM KURN/CK LOU/5 BROWNSTE/A/ ATTORNEY Patented Oct. 27, 1953 FILM PACKET Abraham Kurnick and Louis Brownstein, New York, N. Y., assignors to Finkurn Enterprises, Inc., New York, N. Y., a corporation of New York Application February 11, 1950, Serial No. 143,771

4 Claims.

This invention relates to a film packet for out film, the invention being an improvement over the packet disclosed in an application filed May 20, 1948, Serial No. 23,178, now abandoned, and being particularly adapted for daylight loading with the film magazine described in our patent application, Serial No. 143,772, filed February 11, 1950, now Patent No. 2,628,545, issued February 17, 1953.

In the conventional practice of employing cut film in a magazine, it is necessary to load the magazine in a dark room, and to take extraordinary precautions to make certain that the emulsion side of the film is properly positioned, that the proper type of film has been selected by taking manual note of the position of indicating notches, and that the light-guard slide is correctly disposed within the magazine in relation to the film. It is also acommon characteristic of the said conventional method to employ a type of magazine which can hold one, or at best two, film sheets thereby frequently making it necessary for a photographer to carry with him a large bulk of such magazines.

In an attempt to overcome the disadvantages aforesaid, a film pack is frequently resorted to, this being of the type having a roller around which the film is pulled. This makes it necessary that a very thin film be employed, that is, one with a thin base. films are unsatisfactory, since they cannot readily be retouched because of their thinness. They are dilficult to handle because of their curling tendencies, they easily buckle and become mutilated, andbecome abraded particu larly because of the sharp U-turn which the film must make in passing over the roller.

A further attempt has been made to overcome the disadvantages aforesaid by employing a flat film in an envelope of paper in combination with alight-guard which is in sealed relation to the envelope and is removable by pulling a string to break the seal in order to permit exposure of the film. This last-mentioned construction not only has the obvious disadvantage of preliminarily attaching a string to the film package, as well as the inconvenience of pulling the string for effecting a tear of the seal with each exposure, but it is also necessary to employ a filmholder of such a construction that a lever must be shifted prior to each exposure in order to make room for successive films.

It is primarily within the contemplation of our invention to provide a film packet of the category above-mentioned which can be eifec- It is known that such I tively used in connection with the daylight loadingof cut films, and yet which will have none of the disadvantages aforesaid.

More particularly it is an important object of our invention to provide a film packet employing relatively heavy film readily suitable for retouching and not easily subject to buckling and curling, which will be easy to handle, which can be employed in a film magazine without the use of a roller mechanism. It is especially within the contemplation of our invention to provide a film pack adapted forconvenient use with our film magazine described in our said application, whereby a loading of the magazine and the camera may be done in daylight, and whereby a large number of cut films, far in excess of the capacity of conventional magazines, may be used and stored in a single loading.

And it is our further objective to provide our packet with a light-guard slide capable of being readily withdrawn from its lightobstructing position in front of the film without the use of strings or similar devices for breaking the seal.

It is also within our contemplation to enable the packet to be readily inserted into the single lm-receiving aperture of the magazine of the structure described in said patent application, Serial No. 143,772, now Patent No. 2,628,545, issued February 17, 1953, instead of requiring two separate apertures in the magazine for the slide and the packet, as is the case in the structure of said patent application Serial No. 28,178.

In the type of packet of said application, Serial No. 28,178, now abandoned, the film is retained within a thin foil frame, whereby upon a bending of the frame there is the danger that an opening will be formed to permit light to filter in. It is an important object of our invention to overcome this shortcoming by providing a novel form of inner envelope which will completely protect the film regardless of any bending to which the foil frame may be subjected.

It is still a further object to provide a lightproof retaining member for the film adapted to produce a packet of sufilcient stiffness so as to enable it to be readily inserted into a magazine without damage to the film.

Still another object of our invention is to provide an outer envelope effecting a complete lightseal for the rear of the film, and adapted to permit a light-guard slide to be freely disposed over the front of the film, so that it may be slidably removed therefrom to expose the film for use in the camera.

It is also within our contemplation to provide a supplementary light seal in the form of top tab attached to the upper extension of the light-guard slide, said tab being further adapted to receive indicia thereon indicating the type of film to which it is attached.

It is also within our contemplation to provide a metal foil envelope adapted'to hold together the film, its inner envelope, the slide and the tab,

thereby presenting a compact easily stored and readily handled unit, maintaining the film; in

light-sealed condition, and permitting the operative withdrawal of the slide andthe'tabk And it is our objective to; provide aifilmpacketof the type above-described; which is relatively simple in construction and inexpensive to fabricate.

Other objects, features and advantages will appear from the drawings and the description hereinafter given.v

Referring to the drawings,

Figure l is a disassembled perspectiveshowing thefive componentsof the packet according to a preferred form of our invention,- a fragment of the outer foil container-being removed for clarity.

Figure 2 is a front view ofthe assembled packet, a fragment of the light-guard slide being broken away to show the film therebehind- Figure 3 is a rear view of- Figure 2;

Figure 4 isan-enlarged section of Figure 2 takenalong -linei4i Figure 5 is a front-view of theinner envelope in unfolded conditiomwith -a sheetof cut film therebehind.

Figure 6 is a section of Figure 5 taken along line 6-6.

Figure '7 is a view'like Figure 5; but showing the upper andlower flaps infolded-condition;

Figure S is a section; of -Figure 7 'taken'along line'8--8.

Figure 9 is a-bottom endview-of-a'fragment of Figure 7 shown looking 'in thedirectionof line 9-9.

Figure i0 is a fragmentary view like Figure-9;

but showing the left -flap in the process of 'being trated, there are five component-parts, to wit,-

the outer metal foil envelope 20; the lightseal tab 2|, the inner envelope 22, the sheet of cut film- 23 and the light-guard slide 24.

The outer envelope 20 comprises a-rearwall or backing 25 with a frame comprisinginturned edgesthe lateral edge portionsZE-and 21; and the bottom edge portion 28 being of substantially similar cross section, and extending inwardly so as to form retaining walls for the members 22,-

23 and 24, as will more clearly hereinafter ap pear- -the cross sections of each of said edge port tions being substantially the same and---as-indi-" cated in Figure 16. More specifically (see Figures 14 and 16) each of said edge portions 26, 21 and 28 contains an inwardly extending retaining wall 29 bent along line 33 intermediate its ends, to form walls 3 l and 32 sloping inwardly towards the rear wall from said line 38. The purpose of this construction will bezsetforth'hereinafter.

The upper edge portion 33'0f the outer-envelope 20 contains a downwardly extending portion 34 (Figures l, 4 and 15) and a terminal portion 35 extending upwardly from portion 34 to form therebetween a recess 36. Said recess is adapted to receive:;the"tab,2l,' as is evident from Figures 3i1and14; whereby portions 34 and 35 constitute part of'a tab retainer having a base 31. Said base serves as the retainer for the upper edge 38 of'th'einner-envelope 22, as will be seen from Figureois,

In the preferred form of our invention, the ends of edge portions 26, 21 and 28 are beveled at as-indicated; more specifically, the ends 39 and 4Bofedgeportion 26* are so beveled, as are-the ends 4! and-Mofedge portion 21, and the ends 43and; fi-4of the bottom edge portion 28; The arrangement is hence such as to prevent bulky overlapping, particularly at the bottom of the packet which'is tobe contained within-asuitable magazine. For example, the ends-Wand 43, as well as the ends 42 and 44 are in abutting engagement, thereby-providing aneat yet firm securing'structure.

The inner envelope 22 consists'offour overlapping flaps 35; 46, l'and 48,- these together forming a-backwall for the said inner-envelope 22, as will appear from Figures 1, stand 12. Said flaps areso folded as to present a folded portion 49 at each corner of the envelope. Said'envelope also has-a front peripheral marginal'portion 5!) presenting a front opening 5l to expose the film; as will hereinafter'appear. The marginal periphery 50 cooperates with the four rear flaps to constitute a retainerforthe film 23 operatively disposed within'the envelope; The overlapping portions of the said fiaps 45,46; 47, 48, together-with the inwardly folded corners 49 serve as effective seals against the infiltration of light from the rear oredges of the envelope 22.

The-film 23 is of conventional construction-and material, being preferably of heavier gauge than the-film used-in film packs, surface 52 being the front or'emulsion side.

The slide 24 is of any suitable light-proof and preferably flexible material, and it contains an uppfir extension 53 adapted to extend above the upper-edge of the outer envelope-20, as clearly appears from Figures 2, 3 and 4.

Figures 5 to 12 illustrate the construction of the inner envelope 22, aswell as its assembled relationwithfilm sheet 23. As seen from Figure 5, theblank sheet is substantially diamondshaped, with a central rectangular aperture 5l slightly-smallerthan the film '23, therebyleaving-aperipheral margin 50 in front of "the peripheral portion of the film; Thereafter (see Figure-7) flaps 45-and 4B are bent downwardly and rearwardly into overlapping -relation,-whereby-fiap45forms overlapping fiapportions 54 and 55 with flaps 4'! and '48, flap 46 similarly forming overlapping flap portions 56 and 5l-With said fiaps- 41 and 48. The next step is the folding back of flaps 4l and 48;asindicated'in'Figures '10 and 11, the folded lines intersectingoverlapping flap-portions 54, 55; 56 and El. In their final folded-over positions, inwardly folded;corners .49 are formed, as clearly shown "in-Figure 1. As

mauve handle member J projecting upwardly: above the top of the outer envelope, said handlememberi being vof the same width as the slide, anda lightsealing tab of substantially the same width as the slide and extending upwardly from the top of the outer envelope to an intermediate portionof the handle member, the lower end of the slide being secured within said groove and the upper portion of thetab being secured to said handle member,

having a back wall and marginaliedge portions,

extending forwardly from the periphery, of the back wall and then inwardly to form afront opening, an inner envelope within said outer envelope and having-a front opening behind and in substantial registry with the opening of'the outer envelope, a sheet of photographic film disposed within said inner envelope with the emulsionside thereof facing the front opening of the inner en velope, and a light-guard slide disposed within the outer envelope between said marginal edge portions thereof and the inner envelope, said inner envelope having a front exposure wall having said front opening and lying adjacent the emulsion side of the film, and flaps integral with said front exposure wall, said flaps being folded rearwardly around the entire periphery of the film and into overlapping arrangement adjacent the non-emulsion side thereof, whereby the him will be substantially sealed from light leaking into the outer envelope when the latter is bent or dis torted, and wherein the upper edge of the back wall .has integral therewith a portion extending first forwardly, then, downwardly, then forwardly and then upwardly so as to provide a-groove between said upward and downward extensions, and wherein said slide is provided with a handle member projecting upwardly above the top of the outer envelope, said handle member being of the same width as the slide, and a light-sealing tab of substantially-the same width as the slide and extending upwardly from the top of the outer envelope-to an.;intermediate portion. ofthe handle member, thelower. end of the slidebeing secured within said groove and the upper. portion of the tab being secured to saidhandlemember, the upper edge of the inner envelope abutting against the groove bottom formed by said second-mentioned forwardly-extending. portion of the back wallupper edge, whereby the inner envelopeis held againstupward movement when the slide is pulled upwardly.

4. In a film packet of the type having an outer envelope with .afront opening therein,.an inner. envelope within said outer envelope and having a frontopening in substantialregistry with the opening of the outer envelope, a sheet ofphotographic film disposedwithin said inner envelope, and: alight-guard slide disposed between the openings of saidinnerand outer envelopes, the V improvement comprising a light-sealing tab,.,a retainer for the tab integral with the upper edge of theback wall ,of the outer envelope and exe. tending downwardly, then forwardly and, then upwardly so as to provide a groove between said upward and downward extensions, the lower end of the said tab being disposed within said groove and the upper end of the tab being secured to the slide, the said forwardly extending portioniof the retainer forming the bottom of said groove being proportioned for overlying abutting engagement with the upper edgeof the inner envelope, whereby the inner envelope is held against upward movement when the slide is pulled upwardly.

ABRAHAM KURNICK. LOUIS BROWNSTEIN.

ReferencesCited .in the file of this patent UNITED STATES PATENTS Number Name Date- 563,915' Eastman July 14, 1896- 915388 Moore Mar. 23, 1909 2,082,257 Odell June 1, 1937 FOREIGN PATENTS Number Country Date 16,732 Great Britain of 1908 1,906 France Sept. 4, 1903 (Firstaddition to No. 328,851)

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