US3751253A

US3751253A - Film package

Info

Publication number: US3751253A
Application number: US00149606A
Authority: US
Inventors: M Cohn
Original assignee: Individual
Current assignee: Individual
Priority date: 1969-01-03
Filing date: 1971-06-03
Publication date: 1973-08-07
Anticipated expiration: 1990-08-07

Abstract

A housing for holding film in operative association with a camera, the housing having an edge slot for insertion and withdrawl of the film, a pressure roll in the housing for rolling engagement with the film package upon insertion and withdrawal thereof, and a coiling roll in the housing engageable with a film package upon insertion to open the package for exposure within the camera and to close the film package upon withdrawal from the housing.

Description

United States Patent 1191 Cohn Aug. 7, 1973 FILM PACKAGE 2,074,890 3/1937 Casler 95/72 2,082,257 6/1937 Odell 1 95/66 [76] Mark J' 9 123 Bflkley 2,538,666 1 1951 Buckham... 95 72 Atlantic CItY, 03401 3,613,545 10 1971 Cohn 95/66 [22} Filed: June 3, 1971 7 Primary Examiner-Norman G. Torchm pp N95 149,606 Assistant ExaminerAlfonso T. Suro Pico Re'aed Appfication Data Attorney-Robert K. Youtie [62] :lifig'iisgosna'f Ser. No. 788,731, Jan. 3, 1969, Pat. No. ABSTRACT A housing for holding film in operative association with 52 US. Cl 96/67, 95/66, 95/72 a camera. the housing having an edge Slot for insertion 51 Int 1 03 3 00 03 17 2 03 1 0 and withdrawl of the film, a pressure roll in the housing 581 Field 61 Search 95/66, 67, 77, 72 for rolling engagement with the film Package p sertion and withdrawal thereof, and a coiling roll in the 5 References Cited housing engageable with a film package upon insertion UNITED STATES PATENTS to open the package for exposure within the camera and to close the film package upon withdrawal from the 563,915 7/1896 Eastman 95/72 housin 915,988 3/1909 Moore 95/72 g- 2,017,709 10/1935 Billing 95/66 6 Claims, 13 Drawing Figures PAIENIED AUG 7 FIG.3

llll 1 v n 5 2 T 2 2 U 4 2 M\ 4 2 INVENTOR MARK J. COHN flw (yt.

ATTORNEY PAIENIEDMIB W SHEET 2 BF 4 1. N W H Rm A M K ER. A N IM 8 5 n n n w fi u u m mGE ww 0 f1 llllllllllllllllllllllllllllllllllllllll L L| ATTORNEY minnow 11w 3.751.253

SHEET k 0F 4 I /9Q. I 1 a a a 12 I -r27a. l A g g FIG. I711 4 l INVENTOR I51 MARK J. CQHN FIG.I

BYQ K;

ATTORNEY FILM PACKAGE CROSS-REFERENCE TO RELATED APPLICATIONS This application is a division of my coperiding patent application Ser. No. 788,731, filed Jan. 3,1969 now :U.S. Pat. No. 3,613,545.

BACKGROUND or THE INVENTION As iswell known to those versedin'the art, the use of photographic film'in flat or sheet form is preferred for many purposes, particulary bytprofessional. photog- .raphers; Howevensheet or flat film, while being advantageous in many respects,.has heretofore suffered-several difficulties, for example, requiring the loading into a'filmholder underdarkroom conditions, and the relative bulk of conventional holders-for-sheetfilm making theiruse cumbersomein the field. It was heretofore loading underdarkroom conditions, prior use-of sheet film limited theversatility of conditions under which -.the photographer was able to operate at the point of film exposure. Subsequent to useythe ungainly sheet film holders were necessarily returned for processing of the contained .film and reloading of the holders.

SUMMARY OF THE INVENTION Accordingly, it is an important object of the present invention to provide ,a camera construction and film package which overcomes the above mentioned difficulties, enabling professional, .as well as amateur photographers to obtain the advantages of sheet film use without the serious drawbacks mentioned above. In particular, the photographic devices of the present invention completely eliminate the need for film holders at all. This is particularly advantageous in the use of Color film which has poor storage characteristics. In ac-' cordance with the teachings of the instant invention, a film package of flat or sheet film ,is merely inserted edgewise into a-camera, the film exposed in the camera, and the film package withdrawn, afterwhich it is subjected to the usual developing procedure.

It is another object of the present invention to pro- -videa film package having the advantageous character- .istics, mentioned in the preceding paragraph, which is extremely simple in construction, compact so as to occupy a minimum of space, of negligible weight, and which can be economically manufactured for sale at a reasonable price.

It is still a further object of the present invention to provide a camera construction wherein a film package is received by edgewise insertion thereof, and the film package is automatically opened for a selected exposure through the lens, and merely withdrawn from the camera construction to effect automatic, light selaing closure of-the package.

Other objects of the present invention will become apparent upon reading the following specification and referring to the accompanying drawings, which form a material part of this disclosure.

The invention accordingly consists in the features of construction, combinations 'of elements, and arrangementsof parts,'which*will be exemplified in tlie construction hereinafterf described,and of which thescope will be indicated by the appended claims.

BRIEF DESCRIPTION OFTIIEDRAWINGS FIG. 1 is a perspective view i-llu's'tratinga camera construction and film r package "in accordance with. the teachings" of the instant invention.

FIG. 2 is an explodedpers'pective view ofthe'film package of FIG. 1.

"FIG. 3 is 'aplan -view.of thefilm'package'of FIG. 1,

- partly broken away for clarity of understanding.

FIG ."4 is a longitudinalsectional'view taken generally alongthe line-4 4 of FIG. 3.

FIG. 5 is a "frontelev'ational"view of'the-camer'a device of" FIG. '1, enlarged and partially broken'away for clarity, illustrating a'film" package fullyinserted therein.

FIG 6 is alongitudinal sectional view taken-generally along the line"6 6 of FIG. -5. I

FIG. 7 is apartiallongitudinalsectional view similar toFlG. '6,'butillustratin'g a film'pac'ka'g'eat-an intermediate stage'of insertion and withdrawal.

'FIG. '8 is a partial sectional viewf taken generally along the line 88 of FIG. 5. g

FIG. '9 is a-transverse'sectional view taken generally along the "line 9-9 ofFIG. 5. g I

FIG. 10 is an exploded perspective 'view 'sho win'g a slightly modified form of film package of the present invention. g

FIG. 11 is a plan view showing "the film package of FIG. 10.

FIG. 12 is a longitudinal sectional view taken generally along the line 1-2- 12 of FIG. 11, slightly exploded.

FIG. 13 is a transverse sectional view taken generally along the line 13l3 of FIG. 11.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring 'now more particularly to the drawings, and specifically to FIG. 1 thereof, there is illustrated therein a film package holding device, generally designated 10, which may be fixed or detachably secured toa camera, and a film package 11 of the present invention.

The film package 11 is best seen in FIGS. 2, 3 and 4, as including a generally flat, substantially rectangular sheet of film 12, which may be conventional per se, having a photosensitive layer 13 on one face, the upper face as seen in FIGS 2-4. A covering 15 envelops or covers the film sheet 12, and-,'in the instant embodiment, assumes the form of an envelope having a back side or sheet 16 in completely covering relation with the back surface of the film l2. Extending from a p. site side edges of the back envelope sheet 16,- being turned upwardly along the filmside edges and inwardly to overlie marginal side portions of the front film face are side mask portions 17. At one end of the envelope back sheet 16 there is an extension turned upwardly along the adjacent end edge of the film l2 and inwardly overlying the adjacent end margin of the front film face 13 to define an end mask portion 18. The other end of envelope back sheet 16, remote from mask portion 18,

extends outwardly, as at 19, beyond the adjacentend" engagement with the extension 19, and terminates in a mask end portion 22 overlying the adjacent marginal end portion of front film face 13. In practice, the side mask portions 17 and

end mask portions

18 and 22 combine to define a mask extending peripherally about the margin of the photosensitive face 13 of film 12. That is, the

mask portions

17, 18 and 22 combine to define in the space therewithin a window exposing the photo-sensitive layer 13 of film 12 except along the peripheral margin thereof.

In order to maintain the photo-sensitive layer 13 of film 12 in an unexposed or light-free condition both prior and subsequent to the desired exposure, a closure sheet 23 is superposed on the mask l7, l8 and 22 in closing relation with respect to the mask window, to exclude actinic light from the layer 13. The closure sheet 23 is of thin, flexible, opaque material, being generally rectangular in outline configuration, and having one end portion 24 overlying and adhesively fixed to the mask end portion 22 and adjacent region of tab layer 21. The closure sheet 23 has its side margins 25 respectively overlying and in detachable adherent relation relative to the mask side portions 17. The remaining end margin 26 overlies andis detachably adhesively secured to the mask end portion 18. In addition, an engaging member 27 may be carried on the outer or front surface of the closure sheet end portion 26, for a purpose appearing presently. The engaging portion 27 may be of adhesive, or of the fabric fastener type sold under the trademark Velcro.

It will now be appreciated that the film package 11 includes the film 12 which is effectively protected on its back face and edges from light by the opaque envelope back sheet 16, while the

mask portion

17, 18 and 22 combine to exclude light from the peripheral margin of the front film face 13, defining a central window which is openably closed'by the closure sheet 23 in a manner appearing more fully hereinafter.

The camera device includes a generally flat housing 30 having a closed, generally rectangular back wall 31, and a front wall 32 disposed in forwardly spaced parallelism with the back wall and having a generally rectangular through opening 33. A pair of

side walls

34 and 35 extend between adjacent side edges of the front and

back walls

31 and 32, and a pair of

end walls

36 and 37 extend between adjacent end edges of the front and back walls. In association with a camera, shown in phantom at 29 in FIG. 6, the housing 30 is disposed with its front wall 32 facing forwardly to receive through the front wall window 33 light rays passing into the camera through the camera lens.

As best seen in FIG. 1 and 6, the front housing wall opening 33 is offset longitudinally toward the housing end or edge wall 36, being spaced from the housing end or edge wall 37. Thus, the housing 30 adjacent to the end or edge wall 37 is closed, and in assembly with a camera may extend beyond the camera, as seen in FIG. 6. Formed in the housing end or edge wall 37, extending longitudinally therealong and proximate to the housing back wall 31 is an elongate slot or passageway.

38 which may be bounded by an outwardly projecting tubular formation or receiver 39. Thus, the end edge slot 38 communicates with the interior of the housing 30 and, through the receiver 39 with the exterior of the housing, the slot and receiver being substantially flush on one interior side with the inner or front surface of housing backwall 31. Just inward of the slot 38, interiorly of the housing 30, there is located a pressure roll axial stub shafts 41 and 42. As best seen in FIG. 5, the

pressure roll 40 terminates at its opposite ends proximate to respective

hosuing side walls

34 and 35, which walls are formed with

transverse slots

43 and 44 respectively receiving stub shafts 41 and 42. The

slots

43 and 44 serve to journal the shafts .41 and 42 to rotatably support the pressure roll 40 while permitting slight lateral or forwardly and rearwardly displacement of the pressure roll. Suitable resilient means, such as a coil tension spring 45 is connected at one end to the stub shaft 41, and connected at its other end to a pin 46 fixed to the wall 34 rearwardly of the shaft 41. Similar resilient means, such as a tension spring 47 may be connected at one end to stub shaft 42 and have its other end fixed by any suitable means to the wall 35 rearwardly of the stub shaft. By this means the pressure roll 40 is resiliently urged rearwardly toward rear housing wall 31 to effectively exclude light from entering the housing through slot 38. Further, cooperating light trap means, such as velvet fabric, felt, or the like, may be carried by rear wall 3 1, as at 48 for light tight engagement with the pressure roll 40 in its extreme position of movement toward the rear wall. An additional light trap device 49 may be carried by the front housing wall 32 in cooperating relationwith the forward side of the pressure roll 40, being depressible to facilitate forward movement of the pressure roll. Also, a light trap 50 may be employed in the receiver tube 39, if desired.

On the inner surface of each

housing side wall

34 and 35," extending in adjacent spaced facing relation with respect to the rear housing wlal 31, is a

rib

52 and 53, respectively. More particularly, the ribs or

flanges

52 and 53 each extend along their

respective side walls

34 and 35 from a location proximate to the pressure roll 40 toward the hosuing end wall 36. Extending along the housing end wall 36, in adjacent spaced facing relation with the housing rear wlal 31 and between the ribs or

flanges

52 and 53 is an additional rib or flange 54. As best seen in FIG. 6, the ribs or flanges 52, S3 and 53 combine with the

adjacent walls

34, 36 and 35, and rear wall 31 to provide channels defining a guideway 55 opening at one end toward the slot 38. The guideway 55 is dimensioned for close sliding reception therein of the marginal edge regions of film package 11, as will appear hereinafter in greater detail.

Interiorly of the housing 30, adjacent to and on the inner side of pressure roll 40, is a coiling roll 56 may be of less diameter than the pressure roll 40, extending generally parallel to and inward of the pressure roll, and terminating at its opposite ends justshort of the

side ribs

52 and 53. Extending from opposite ends of thecoiling roll 56 are

stub shafts

57 and 58 which extend forwardly of and across respective ribs or

flanges

52 and 53 and through

transverse slots

59 and 60 in

respective side walls

34 and 35. The coiling roll 56 is thus joumaled for axial rotation and shiftable laterally or transversely in the forward and rearward direction within the limits of

slots

59 and 60. Suitable resilient means, such as a coil spring 61 has one end connected to coiling roll shaft 57, and its other end connected to a rearwardly located pin 62. Similarly, the other coiling roll shaft 58 may be connected by a spring 63 to a rearwardly located fixed pin 64. In this manner, the coiling roll 56 is resiliently biased rearwardly or toward the rear housing wall 31 between the

ribs

52 and 53. The exterior or surface 65 of the coiling roll 56 is provided with complementary engaging means, such as adhesive or fastener fabric of the type carrying the trademark Velcro for mating engagement with the engaging means 27, for purposes appearing hereinafter.

If desired, there may be provided a plurality of holddown rollers, such as

rollers

66 and 67, preferably located just inwardly of

respective flanges

52 and 53, adjacent to coiling roll 56.

In order to seal the

slots

43, 44, 59 and 60, there may be provided

enclosures

70 and 71 on

respective side walls

34 and 35 each enclosing the shaft projecting through the associated guidewall. If desired, the

enclosures

70 and 71 may be recessed to receive the free ends of

shafts

41, 57 and 58. The shaft 42 extends through a slot 72 in the enclosure 71 and is there provided on its outer end with an external manually actur able knob 73, having a hub 69 of sufficient size to cover the slot 72 in all positions of the pressure roll 40. Within one of the

enclosures

70 and 71, say the latter, there may be provided drive means, such as

gears

74 and 75; and, an idler gear 76 may be carried on a shaft 77 journaled in the enclosure 71. The idler gear'76 is in meshing engagement with both the gears 74 and' 75 respectively keyed to

shafts

42 and 58. In this manner, rotation of pressure roll 40 effects positive driving of coiling roll 56 in the same direction of rotation.

In use, it is only necessary to grasp a film package 11 by the extension or

tab

19, 21 and insert the distal end edgewise through the receiver 39 and slot 38. It is essential that the closure sheet 23 face forwardly. Continued edgewise insertion of the film package 11 resiliently deflects the pressure roll 40 slightly forwardly and frictionally effects rotation of the pressure roll to drive the coiling roll 56 in the same direction of rotation. The leading edge of the film package 11, along the side margins thereof, engage in guideway 55 beneath

respective flanges

52 and 53 to assure that the film package remains planar in flat facing engagement with 4 the rear housing wall 31. Upon movement of the leading film package edge in contact with the coiling roll 56, the coiling roll is displaced forwardly and rolls onto the engaging portion 27. Thereupon, the engaging portion 27 of the closure sheet 23 is detachably secured to the complementary engaging surface 65 of the coiling roll 56. This condition is shown in FIG. 7. Upon further edgewise insertion of the film package 11, the coiling roll 56 continues to rotate, being driven by the pressure roll 40, and thereby coils or winds the closure sheet 23 about thecoiling roll, stripping the closure sheet from its detachable securement to the

mask regions

17 and 18 of the film package. This coiling action proceeds until the film package 11 is completely inserted in the guideway 55, the condition shown in FIG. 6. It will there by appreciated that the closure sheet 23 has been wound about the coiling roll 56 to completely open the window defined within

mask

17, 18 and 22. The film is now in condition for exposure to light passing through the camera lens. In order to assure that the film package 11 is fully inserted, the hand wheel or knob 73 may be rotated for additional inserting force.

Subsequent to exposure of the film 12, it is merely necessary to grasp the

film package tab

19, 21 and withdraw the film package. This will effect reversal of the above-described operation, wherein rotation of the pressure roll 40 will effect positive unwinding rotation of the coiling roll 56, the latter simultaneiously unwinding and replacing the closure sheet 12 in light excluding relation on the

mask

17, 18, so that the withdrawn film package 11 appears identical to that prior to exposure. Here again, the knob 73 may be employed to facilitate withdrawal, if desired. The exposred film 12 may be removed from the package 11 for processing in the conventional manner.

In the slightly modified embodiment shown in FIGS. 10-13, a film package 11a includes a generally rectangular sheet of film 12a having its front face provided with a photosensitive coating 130. In addition, the film sheet 12a is provided with a covering 15a, which may be in the form of an opaque dye or coating on the rear surface and edges of the film sheet. A generally rectangular mask 17a is suitably secured on the front, photosensitive surface of film sheet 12a covering the peripheral margin thereof. The mask 17a is of suitable opaque material, and may be secured to the film sheet by adhesive or other suitable means. At one end of the film sheet 12a, there is provided a tab 19a having a pair of flaps 22a adhesively or otherwise secured on the upper and lower sides of the film sheet 12a and mask 17a. Thus, the tab l9a extends from one end of the assembled film sheet 12a and mask 17a.

In addition, a flexible, opaque closure sheet 23a is disposed in overlying relation with respect to the mask 17a and film sheet 12a, having one end region 24a overlying and secured to the tab 194. The closure sheet 23a is detachably secured to the mask 17a in the same manner as the closure sheet 23 described hereinbefore. Carried externally on the closure sheet 23a remote from the tab isan engaging member 27a, which may correspond to the engaging member 27 of the first described embodiment. 1

In operation, the film package 11a may be employed in substantially the same manner as the film package 11 during insertion into the camera, exposure and removal from the camera. In the film processing, the covering material or opaque coating 15a may be removed by solvent, or otherwise removed, as may the mask 17a and tab 19a if desired.

From the foregoing, it is seen that the present invention provides aphotographic film holding device and film package which fully accomplish their intended objects and are well adapted to meet practical conditions of manufacture and use.

Although the present invention has been described in some detail by way of illustration and example for purposes of clarity of understanding, it is understood that certain changes and modifications may be made within, the spirit'of the invention. 2

I claim:

l. A film package comprising a film sheet having a photo-sensitive emulsion on one face, an opaque'mask having a central window and mounted on the periph eral margin of said one face, an opaque covering on the edges and other face of said film sheet, a flexible closure sheet releasably secured to said mask in closing re lation with said window, an extension on one edge of said film sheet for grasping to manually effect edgewise insertion and withdrawal of said package through a slot, and engaging means on said closure sheet for releasable fastening to a coiling roll to coil and uncoil said closure sheet on respective release from and return.

to its closing relation.

2. A film package comprising a film sheet having a photo-sensitive emulsion on one face, an opaque mask having a central window and mounted on the peripheral margin of said one face, an opaque covering on the edges and other face of said film sheet, a flexible closure sheet releasably secured to said mask in closing relation with said window, and pressure sensitive adhesive means on said closure sheet and mask releasably securing the former to the latter.

3. A film package comprising a film sheet having a photo-sensitive emulsion on one face, an opaque mask having a central window and mounted on a peripheral margin of said one face, an opaque covering on the edges and other face of said film sheet, and a flexible closure sheet releasably secured to said mask in closing relation with said window, said opaque covering comprising a coating on said film sheet.

4. A film package according to claim 3, in combination with pressure sensitive adhesive means on said closure sheet and mask releasably securing the former to the latter.

5. A film package according to claim 3, in combination with an extension on one edge of said film sheet for grasping to manually efiect edgewise insertion and withdrawal of said package through a slot, and engaging means on said closure sheet for releasably fastening to a coiling roll to coil and uncoil said closure sheet on respective release from and return to its closing relation.

6. A film package according to claim 2, in combination with an extension on one edge of said film sheet for grasping to manually effect edgewise insertion and withdrawal of said package through a slot, and engaging means on said closure sheet for releasable fastening to a coiling roll to coil and uncoil said closure shet on respective release from and return to its closing relation.

Claims

2. A film package comprising a film sheet having a photo-sensitive emulsion on one face, an opaque mask having a central window and mounted on the peripheral margin of said one face, an opaque covering on the edges and other face of said film sheet, a flexible closure sheet releasably secured to said mask in closing relation with said window, and pressure sensitive adhesive means on said closure sheet and mask releasably securing the former to the latter.
3. A film package comprising a film sheet having a photo-sensitive emulsion on one face, an opaque mask having a central window and mounted on a peripheral margin of said one face, an opaque covering on the edges and other face of said film sheet, and a flexible closure sheet releasably secured to said mask in closing relation with said window, said opaque covering comprising a coating on said film sheet.
4. A film package according to claim 3, in combination with pressure sensitive adhesive means on said closure sheet and mask releasably securing the former to the latter.
5. A film package according to claim 3, in combination with an extension on one edge of said film sheet for grasping to manually effect edgewise insertion and withdrawal of said package through a slot, and engaging means on said closure sheet for releasably fastening to a coiling roll to coil and uncoil said closure sheet on respective release from and return to its closing relation.
6. A film package according to claim 2, in combination with an extension on one edge of said film sheet for grasping to manually effect edgewise insertion and withdrawal of said package through a slot, and engaging means on said closure sheet for releasable fastening to a coiling roll to coil and uncoil said closure sheet on respective release from and return to its closing relation.