US1616906A - Holder for photographic materials, such as cut films - Google Patents

Description

' Feb. 8, 1921. 1,616,906

R. KROEDEL HOLDER FOR PHOTOGRAPHIC MATERIALS, SUCH AS cur FILMS Filed July 11, 1924' 2 Sheets-Sheet 1 FIEi -5 Roberfi Krodel, B Y mfg J ATTORJVE 1 19.

} INVENTOR,

R. KROEDEL Feb. 8 1927.

HOLDER FOR PHOTQGRAPHIC MATERIALS, SUCH AS CUT FILMS.

" Filed July 11, 1924 2 Sheets-Sheet 2 IJVVEJVTOR, R beri Hroede B Y a 218W cation, thenovel features being- Patented Feb. 8, 1927.

UNITED STATES 1,616,906 PATENT OFFICE.

ROBERT KROEIOEL, .ROCHESTER, NEW YORK, ASSIGNOR TO EASTMAN KODAK COM- PANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW'YORK.

HOLDER FOR PHOTOGRAPHIC MATERIALS, SUCH AS CUT FILMS.

Application filed July 11,

. more 'particularly*to. photographic plate holders. One object of my invention 18 to producea holder fortw'o sheets of film I 5' which-is of the minimum size and weight; anotherfobject is to provide a holder which. issimpleto operate, particularly in loading 6 and unloading; another object is to provide a. convenient manipulating "handle for the 1o holder; another objectfis to. provide a holder consisting of but few simple parts; another object is to provide aholder. which can be easily assembled, and other objects will appear herein after from the following specifipointed out in the. claims at the end thereof. v p

In the drawings, wherein like reference characters denote like partsthroughout:

. Fig. 1, is a plan view of a plate holder constructed in accordance with and illustrating one form of my invention;

. Fig. 2, isa side elevation thereof Fig. 3,, is a plan of the film kit removed f from the'holder for loading;

Fig. 4, shows the blank from which the kit is made;

Fig. 5, is a side "liliis iiivention relates to photography and elevation of the kit;

with kit. and dark slides removed;

- one behind the other; g

F i 8', is an enlarged detail section showing t e snap latch between the main frame andkit;

line ,9,9 of Fig. 1

same figure;

Fig. 11-, is a section of a modified form of 1 Fig. 12, is a fragmentaryplanhofaimodified form of dark slide; and

l ig., 13, isa fragmentary side-elevationaof 'tion.

Broadly this holder, comprises a thin frame closed on the sides'andqbottorn and open along the top. Akit for jholding'two I plates is msertab e carrying a light locking, padonea'ch-side-of the kit top. ,iif v \Vhen I refer to film or pla'tes, I wish .these terms-understood to'embrace all-sup ports'commonly used for a photographic'all'y light sensitive medium which is in the form Fig. 7, is a-pla'n of the dark slides lying- Fig. 9, is a greatly enlarged section on;

the holder manipulating. handles in posithrough thef-open Stop,

1924. Serial No. 725.520.

of a layer upon the support. The best known supports are glass and pyroxlin, paper being also sometimes used.

This holder-is preferably made of thin sheet metal and comprises a frame made from two frames '2 eat-h having side flanges 3 and bottom flanges at. The flanges above described of one/frame fit into the other as shown in Fig. (3, and form channel-shaped 8 for uniting the two parts of the frame 1.

The double thickness of metal around the edges forms a reinforcing or strengthening strip. I have found in practise two frames can be made of exactly-the same dimensions and on one the side and bottom flanges may be slightly bent 'inand then forcedinto the other, as the metal of which they are made is Fig. 6, is a section showing the main frame.

shows the kit as made of a single piece of- --blanked out metal, the dashed lines indicating where the blankis to be bent. The sides 2 l1 and 12 are folded'back to back along line Fig. 10, is a section on line-10-1O of. the

1'3,and stifi'eninglower flanges 14 are formed on bothends of the bottom bars 15. Side film-holding. flanges 16 are bent along lines 17' so that a sheet of film may be inserted one edge 20 of plush strips 21, the nap of 2the-plush forming a flexible light tight closurefor the open end ofthe frame 1 when the kit 10 is 1 insertedtherethrough. The 'dark slides '30 and 31 are inserted between the-ftkitrand the frames 2. When removed t-h'eplushenters the inside of the formed up ribs 7 thus forming a light lock. When in serted in the holder the plush presses against the ida rk 's'lides themselves to form a light tight closure. The thickness of the closure members 21, when removed from the frame (kFigJtS) is greater than the inside width of the frame consequently when slid into the frame, the nap on the plush presses against the spaced strips'38. joining the edges 3.

To load or unload the holder the dark slides and 31 are preferably withdrawn, as in Fig. 2, and then the kit 10 is withdrawn by the top bars 18. The film F can be readily slid beneath flanges 16 from the bottom up, the lower edge 22 of the plush 21 forming a stop limiting the upward move ment of the film (Fig. 3).

The kit is preferably retained in frame 1 by the snap latch formed by the struck in lug near the bottom of the side flanges 3 (Fig. 8). This lug engages a detent or indentation-41 in the stitl'ening flanges 14..

Dark slides 30 and 31' are provided with operating handles 33, 34 located unsymmetrically and having an exposure signal 35 on one side of the handle. The handles'are preferably rolled to form a convenient grip. The reason for placing the handles unsymmetrically is that the slides are reversed by an operator after making an exposure to so indicate by having the signal 35 visible. No matter how the slides may be placed, as for instance when dark slide 30 is reversed it will occupy the position shown in broken lines (Fig. 7) in which position handle 33 of dark slide 30 is alongside of, and not covering up handle 34.

It will be noted that ribs 7 have a double li ht locking feature. On the outside, the ri engages a corresponding notch in a camera in the usual manner, while on the inside clearance is provided so that the nap of the plush can spring outwardly into the slot when the dark slide is withdrawn forming an effective light tight joint.

In Fig. 11 I have shown a modified kit 100 wherein sheets of cut film F may be held particularly flat by raising the edges f due to the inclined edges 118 and overhanging flanges 117. In this case the bottom bar 115 may have flat ends 116 and the posi: tioning of the septum crosswise of the frame may be solely due to flanges 117.

I prefer to curve the edge of frames 2 at the bottom (30 to facilitate sliding the edge 61 of the dark slide into the holder. As shown in Fig. 12, however, I may curve the lower edges of the dark slides 30, 31

' as at and provide a straight lower edge 51 to frame aperture 2.

While the drawings are approximately to scale Figs. 9, 10 and 11 are greatly exag gerated in width, and in all cases the relative thickness of the metal is exaggerated. Consequently the holder is much more compact than the drawings indicate.

Each time the plate holder is inserted or iemoved from a camera the handles 6 are used. These may have hooks 160 as shown in Fig. 9. These handles are naturally squeezed. together each time they are grasped, as shown in Fig. 13, thus tendin to bend the open ends of frames 2 towar each other. This feature is useful in working against a flat wall of a camera giving more room to handle the holder.

It should be noted that in kits constructed as above described the spaced flanges 14 and 18 form positioning members, and certain of flanges 14, 1(5 and 15 or 115 and 117 form spacers to position the dark slides and hold them from contact with the sensitive tilm F. Thus, in Fig. 10 I have shown flanges 1-1 as positioning dark slides 30 and 31 although of course flanges 16 prevent, to a certain extent, the slides from being bent iiiwardly damaging the tilm and possibly admittin light thereto. In Fig. 11 flanges 117 hold the slides 30,31 in their proper posi' tion against the frames 2 and spaced from films F, and flanges 115 position the kit laterally of the holder.

Having thus described my invention,what I claim as new and desire to secure by Letters Patent is:

1. A cut film holder including a hollow frame member, channel like edges carried by the frame member, a kit slidable into the frame member and havin flanges adapted to engage the channel e ges, and flan es spaced from the first mentioned flanges or positioning the film.

2. A cut film holder including a hollow frame member, channel like edges formin a part of the frame member, a kit form of a substantially flat sheet and slidable in the channel members, a plurality of flan on the kit for positioning the kit and i holding a film, certain of said flanges bei bent at an angle to the flat sheet of whilifi the kit is made, whereby portions of the flange are spaced from the sheet, and dark slides for the out film holder also slidable into the channel members with the kit, ing spaced from the latter by the t flanges.

3. A cut film holder including a. hollow frame member having channel like edges, 1! film-holding kit adapted to slide in the channels, flanges on the kit adapted toretain a film in the kit, and a dark slide adapted to enter and slide in the channels betweenthe frame and the kit, said dark slide being spaced from a film held in the kit by the flanges which hold the film in the kit.

4. In combination, an open-topped frame member having channel shaped side and bottom members, a kit slidable into the channel members through the open top of the frame, dark slides also slidable into the channel members through the open top of the frame, and means carried by the kit for spacing the dark slides from the kit.

.5. In combination, an o en-topped frame member having channel s aped side members and the open top -having strips joining the side members, a kit slidable into the channel members through the open top of the frame, and between the joining strips, said kit being of less thickness than the inside width of the channel members so as to be freely slidable therein, and a closure for the open top consisting of a member of greater width than the inside width of the channel members, said closure having parts capable of being compressed so as to slide into and out of the frame member between the joining strips, forming a light tight connection therewith. r

6. A cut' film holder for cameras includthin sheet metal frame, an integral mg a operating tab by which the frame may be ROBERT KROEDEL.

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