US2017709A

US2017709A - Carrier and the like for photographic purposes

Info

Publication number: US2017709A
Application number: US749655A
Authority: US
Inventors: Billing Noel Pemberton
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-11-03
Filing date: 1934-10-23
Publication date: 1935-10-15
Anticipated expiration: 1952-10-15

Description

' @da l5, 1935. N. P. BILLaNG 29H97@ l CARRIER AND THE LIKE FOR PHOTOGRAPHIC PURPOSES Filed Ooi. 23, 1934 2 Sheets-Sheet l N. P. Bumm@ @VRQQ CARRIER AND THE LIKE FOR PHOTOGRAPHIC PURPOSES Filed Oct. 25, 1934 2 Sheets-Sheet 2 Patented Oct. 15, 1935 UNITED STATES PATENT OFFICE CARRIER AND THE LIKE FOR PHOTO- GRAPHIC PURPOSES Noel Pemberton Billing, London, England 14 Claims.

This invention consists in improvements in or relating to carriers for photographic film or other light-sensitive material comprising a support oi'. celluloid, paper or other similar thin flexible material.

It has already been proposed to construct for light-sensitive material a dark slide which is of cardboard or metal and comprises an outer envelope having one face in the form of a mask, an inner slide totally enclosing the sensitive material except for an open end and a pair of interengaging stops respectively located on the envelope and the slide to limit the outward movement of the slide. Such a dark slide is distinct from a carrier for light-sensitive material provided by the present invention, which carrier is oi thin and not necessarily7 rigid material and is normally of paper, and the term carrier employed in the present specication and in the appended claims is to be understood to refer only to a carrier having all its various parts constructed of thin material which can easily be folded to the desired shape Without cracking or breaking.

According to the present invention a carrier for photographic lm or other light-sensitive material comprises two relatively slidable envelope elements to enclose the sensitive material, one of which elements has a wall formed as a mask for the sensitive material and the other of which elements has an open end for the entry of the sensitive material and interengaging stops operative between the inner end of the inner envelope and the outer envelope to be interengaged to prevent complete separation of the two envelope elements, characterized in that both envelope elements ,are formed oi paper or paperlike material and a bent-over ilap on one of the elements constitutes one of the interengaging stops.

While the carrier according to this invention is preferably made entirely of paper, the invention is to be understood as including other material of a like flexible nature but does not include relatively rigid material such as stiff cardboard or thin metal.

Preferably that envelope having one wall formed as a mask comprises the outer envelope and has, similarly to the inner envelope, one open and one closed end, and in which means is provided for temporarily afxing the sensitive material to the outer envelope.

Preferably also that border portion of the mask which receives the inner end of the inner envelope, is formed with or is enclosed by envelope material folded inwardly to produce an outward pressing on the inner edge oi the aforesaid border whereby satisfactory reception of the end oi the inner envelope as the carrier is closed is ensured. I

ln order that the invention may be more clearly understood some preferred examples will now be described with the aid oi the accompanying drawings, in which:-

Figure 1 is a plan view of one constructional 10 form of the invention,

Figure 2 is a plan view similar to Figure 1 showing the inner .envelope oi the construction withdrawn,

Figure 3 is a diagrammatic view representing 1l a section on the line ill-l0 of Figure 1 with the various parts separated from one another in order clearly to show the construction,

Figure 4 is a section of a similar nature to that of Figure 3 taken on the line II-Il oi Figure 2,

Figure 5 is a view similar to Figure 1 of another embodiment of the invention,

Figure 6 is a View similar to Figure 5 showing the inner envelope withdrawn,

Figure 7 is a section oi a nature similar to that of Figure 3 but taken on the line lll-I4 of Figure 5,

Figure 8 is a view similar to Figure 1 o another modication of the invention,

Figure 9 is a view similar to Figure 8 showing the inner envelope withdrawn,

Figure 10 is a section oi a similar nature to Figure 3 taken on the line l'I--l 0I Figure 8,

Figure 11 is a View similar to Figure 1o iuusu trating a method of assembly 0I the various parts, and

Figure l2 is a fragmentary section similar to Figure 7 showing a further modification.

Like reference numerals indicate like parts in D the several gures of the drawings.

lt is to be understood that in the illustrated examples the envelope and supports for light sensitive material will, in practice, be made oi thin and preferably or black or red paper; but in l order to illustrate the invention clearly the thickness of this paper in all the sectional views has been greatly exaggerated as has also the thickness or" the lightl sensitive material. Moreover, in some of the sections such as those represented 50 by Figures 3, 4, 7, i9, l1, and 12 not only has the thickness oi the parts been exaggerated but the various parts have been drawn as separated from one another in order to indicate clearly the details of construction. It will be understood, of l;

course, that in fact the light sensitive material and its enclosing member or members will actually be in the form of a very thin package.

In the form illustrated in Figures 1 to 4 there is provided an outer envelope, one wall I0 of which is a solid wall and the opposite wall of which is afforded by a marginal framing 26 providing a masked aperture 25 to expose, when required, the full area of the film or other sensitized surface to be used. For the sake of brevity the term film will be employed throughout the specification in referring to the light sensitive material enclosed in the forms of carrier described, but it is to be understood that the invention contemplates the use of any sensitized material for photographic purposes including negative lm and printing paper.

The outer envelope is open at both ends, that is to the left and right of Figures 1 and 2, but is closed along the other or lateral margins or edges. The film carrier is in the form of a paper slide 35 which at one end has a nap 36 to overlie one end of the film. At its other end the slide is extended into the form of a flap 31 which, as clearly shown more particularly in Figures 3 and 4, extends through and beyond the open end of the envelope and is formed to fold back over that end and to tuck in at i3? beneath the end margin 26 of the outer envelope. An exactly similarly folded assembly is obtainable by passing the tuck-in portion |31 into a slot in the outer envelope. Such a slot would run transversely of the upper surface of the outer envelope IIJ, and the mask aperture 25 may be regarded as such a slot elongated or widened in an endwise direction.

The film carrier also comprises an inner envelope having imperforate opposed walls 38 closed around three sides and affording a tab 39 on one of those closed sides which constitutes an end of the envelope. The end opposite the tab is open and it will be seen that the inner envelope slides over` and encloses the lm and its carrier and lies within the outer envelope.

Turned back

interengageable tabs

40 and 4| provided on the entry edge of the outer envelope and the open edge of the inner envelope serve to prevent the unintentional complete withdrawal of the inner envelope. The position of the latter as it nears the end of its withdrawal stroke is illustrated in Figure 4 and it will be seen that by withdrawing the inner envelope not only is the surface of the film strip 42 exposed to the aperture 35 but the tabs 40 and 4I are approaching the position at which they will be readily engaged.

When employing a film carrier such as has just been described for the purpose of negative exposures to be made in a camera a back closure member of the camera body is opened and the film carrier is placed in the camera back, so that when the back closure member is again replaced it will grip the envelope rmly between it and the camera body. With the parts in this position the tab 39 secured to the inner envelope 38 is pulled to slide the envelope away from the iilm. The inner envelope is moved until the flap 4l engages with the flap 40. By this movement of the inner envelope the film 42 is exposed within the camera through the mask aperture 25. When exposure to light from the camera lens has been made the inner envelope is pushed back.

In the modification illustrated in Figures 5 to 7 inner and outer envelopes are provided similar to those described in connection with Figures 1 to ll and the same reference numerals have been utilized. In this case, however, there is no lm carrier or slide such as 35, 36 and the inner envelope passes directly over the film alone. The latter is prevented from accidental withdrawal when the inner envelope is pulled out in the following manner:-

A small tongue 43 is punched out from the material of the outer envelope near its margin, preferably in one of the mask margins 26. The inner surface of this tongue is treated with adhesive so that it can be stuck down to the surface of the ilm. The corresponding edge of the inner envelope is recessed at 44 to accommodate the tongue when thus stuck down. In place of the tongue 43 an aperture could be formed in the back wall or solid wall of the outer envelope and an adhesive seal can be stuck on to that Wall so as to engage around the margins of the aperture and also with the surface of the film exposed at the aperture. The seal can then be carried round the edge of the outer envelope to be fastened down on to the inner envelope, thus holding all the parts inseparable until required for use. This is illustrated in Figure l2 in which the seal is shown at 45, stuck down at 46 to the inner envelope and at ll to the nlm. Although in Figure 12 the entry of the seal through the aperture of the Wall of the outer envelope has been grossly exaggerated, in practice this will be substantially flat.

ln the ferm illustrated in Figures 8 to 10 the nlm is affixed toy the outer envelope by means ol' a foldable tab which is secured at one end to the film 42 and at the other end to the outer surface of the margin of the mask element 25. When the nlm is pushed fully home within the outer envelope as shown, the tab 4B folds back on itself in a pleat 49 lying inside the outer envelope and in this position the inner envelope 43 be passed over the nlm so as completely to enclose it. One edge of the inner envelope is shown as provided with a flap 5l] which, when it is in the full-line position illustrated in Figure 1U, will assist in forming a light-seal; but when the` envelope 3B is withdrawn the flap 56 will engage behind the edge of the mask to prevent complete withdrawal of the envelope. This construction aords an easy means for assembling the parts because the film can be ex- 50 tended to the position shown in Figure l1 and the inner envelope passed over that portion of it extending beyond the outer envelope whereafter the iilm the inner envelope can be together moved back into the outer envelope to the full-line position represented in Figure 10.

The invention is not limited to the precise details of construction illustrated and whenever required, where the construction permits, a ilap on one member of the package may be utilized to interengage an oppositely directed flap on another member when the two parts are closed up and/or when they are open ready for exposure.

It is also to be understood that the form of the invention described with reference to the drawings could be made .in `multiple form.

The invention is particularly convenient for use with the camera forming the subject-matter of patent specification No. 423,035, in which the hinged back of the camera will serve to grip the envelope between it and the opposed edge of the side wall of the camera.

I claim:

l. A carrier for photographic nlm or other light-sensitive material comprising two relatively slidable envelope elements to enclose the sensitive material one of which elements has a wall formed as a mask for the sensitive material and the other of which elements has an open end for the entry of the sensitive material and interengaging stops operative between the inner end of the inner envelope and the outer envelope:

to be interengaged to prevent complete separation of the two envelope elements, characterized in that both envelope elements are formed of paper or paper-like material and a bent-over iiap on one of the elements constitutes one of the interengaging stops.

2. A carrier according to claim 1 in which that envelope having one wall formed as a mask comprises the outer envelope and has, similarly to the inner envelope, one open and one closed end, and in which means is provided for temporarily aifixing the sensitive material to the outer envelope.

3. A carrier according tol claim 1 in which that envelope having one Wall formed as a mask comprises the outer envelope and has, similarly to the inner envelope, one open and one closed end, in which means is provided for temporarily aixing the sensitive material to the outer envelope. and in which that border portion of the mask which receives the inner end of the inner envelope is formed with envelope material folded inwardly to produce an outward pressing on the inner edge of the aforesaid border Whereby satisfactory reception of the inner end of the inner envelope as the carrier is closed is ensured.

4. A carrier according to claim 1 in which an edge of the outer envelope is provided with an inwardly-turned flap to co-operate with that at the inner end of the inner envelope.

5. A carrier according to claim l in which an edge of the outer envelope is provided with an inwardly-turned iiap to co-operate with that at the inner end of the inner envelope and in which the co-operating flaps of the envelope elements are provided on the rear surfaces of those' elements adjacent the unsensitized surface of light sensitive material to be retained Within the carrier.

6. A carrier accordingr to claim 1 in which that envelope having one Wall formed as a mask comprises the outer envelope and has, similarly to the inner envelope, one open and one closed end, and in which means is provided for temporarily afiixing light sensitive material to the outer envelope, and the flap at the end of the inner envelope is provided to coi-operate with a border portion of the mask to limit the relative movement of separation,

'7. A carrier according to claim 1 in which that envelope having one Wall formed as a mask comprises the outer envelope and has, similarly to the inner envelope, one open and one closed end, and in which means is provided for temporarily aflixing light sensitive material to the outer envelope, in combination with an inner slide to carry the light sensitive material, which slide together with the light sensitive material passes into the inner envelope and has means for engagement with the outer envelope.

8. A carrier according to claim 1 in Which that envelope having one Wall formed as a mask comprises the outer envelope and has both ends open, and is combined With an inner slide to carry the light sensitive material, which slide together with the light sensitive material passes into the inner envelope and has means to engage the said slide with the outer envelope comprising a flap at the end of the slide which, when the light sensitive material is in position,

will extend through and beyond one open end 5 of the envelope and is there formed to fold back over that end and to tuck into a transverse slot formed in the outer envelope for that purpose.

9. A carrier according to claim l in which that envelope having one Wall formed as a mask com- 10 prises the outer envelope and has both ends open, and is combined with an inner slide to carry the light sensitive material, which slide together with the light sensitive material passes into the inner envelope and has means to engage the said slide 15 with the outer envelope comprising a ap at the end of the slide which, When the light sensitive material is in position, v/ill extend through and beyond one open end of the envelope and is there formed to fold back over that end and to tuck 20 into a transverse slot formed in the outer envelope for that purpose, the said transverse slot being constituted by the the end border of the mask behind which the end iiap is tucked to lie inside the said end border. 25

10. A carrier according to claim 1 in which that envelope having one Wall formed as a mask comprises the outer envelope and has, similarly to the inner envelope, one open and one closed end, and in which means is provided for temporarily 30 aiiixng light sensitive material to the outer envelope, in combination with an inner slide to carry the light sensitive material, which slide together With the light sensitive material passes into the inner envelope and has means for engagement with the outer envelope, and has also at the inner end a flap to overlie the sensitive surface.

11. A carrier according to claim 1 in which that envelope having one wall formed as a mask 40 comprises the outer envelope and has, similarly to the inner envelope, one open and one closed end, and in which means is provided for temporarily aiiixing the sensitive material to the outer envelope, said means comprising an adhesive flap 45 on the outer envelope passing inwardly into the carrier through a vvall of the inner envelope element to the light sensitive material to which the flap is secured.

12. A carrier according to claim 1 ln Which 50 that envelope having one Wall formed as a mask comprises the outer envelope and, similarly to the inner envelope, one open and one closed end, and in which means is provided for temporarily aflixing the sensitive material to the outer en- 55 velope, said means comprising an externally applied seal, an adhesive surface of which engages the sensitive material through a hole formed in a Wall of the outer envelope, and a hole in said outer envelope for that purpose. 60

13. A carrier according to claim 1 in which that envelope having one wall formed as a mask comprises the outer envelope and has, similarly to the inner envelope, one open and one closed end, and in which means is provided for tempo- 05 rarily ailixing the sensitive material to the outer envelope, said means comprising a folded or foldable strip secured at one end to the light sensitive material and at the other end to the outer envelope to overlie a margin of the mask, which 70 strip will fold over on itself to form a pleat underneath the margin of the mask when the sensitive material is fully Within the envelope and Will unfold to permit the sensitive material to be partially slid out from the envelope. 75

14. A carrier according to claim 1 in which that envelope having one Wall formed as a mask comprises the outer envelope and, similarly to the inner envelope, one open and one closed end, and in which means is provided for temporarily afxlng the sensitive material to the outer envelope, said means comprising an externally applied seal, an adhesive surface of which engages the sensitive material through a hole formed in 10 a wall of the outer envelope, and a hele in said outer envelope for that purpose, and in which the seal is stuck to the light sensitive material through a hole formed in the solid (or rear) Wall of the outer envelope and passes round the edge o! the latter to overlie the margin of the mask constituting the other wall of said outer envelope so as to be adhesively engaged with the outer wall of the inner envelope.

NOEL PEMBERTON BILLING.