US1726313A - Multiplier appliance for cameras - Google Patents

Description

Aug. 27, 1929. D. J. RAY

MULTIPLIER APPLIANCE FOR CAMERAS Filed March 7, 1928 2 Sheets-Sheet 1 Aug. 27, 1929. D. J. R AY MULTIPLIER APPLIANCE FOR CAMERAS Filed March 7, 1928 2 Sheets-Sheet 2 Inventor Cf. JFa y,

Q Attorney l I 1 i L 1 I a Z Patented Aug. 27, 1929.

UNITED STATES PATENT OFFICE.

MULTIPLIER APPLIANCE FOR CAMERAS.

Application filed March 7, 1928.

The present invention relates to a multiplier device for cameras, and has for its prime object to provide a device of this nature, which reduces the time and energy expended in makin several pictures on one film pack and a multiplier appliance is designed especially for photographers making small photographs, such as ping pongs.

Another very important object of the 1nvention resides in the provision of an appliance of this nature having a film pack carrier, which may be adjusted horizontally and vertically, so that a plurality of exposures may be had on a single film.

A still further very important object of the invention resides in the provision of an appliance of this nature, which is simple in its construction, inexpensive to manufacture, thoroughly efficient and reliable in operatlon, and otherwise well adapted for the purpose for which it is designed.

With the above and numerous other objects in view, as will appear as the description proceeds, the invention resides in-certain novel features of construction, and in the combination and arrangement of parts as may be hereinafter more fully described and claimed.

In the drawings:

Figure 1 is a rear elevation of the appl ance showing the film pack carrier in one position.

Figure 2 is another View showing the film pack carrier in another position.

Figure 3 is a vertical section therethrough, taken substantially on the line 33 of Figure 2.

Figure 4 is a horizontal section, taken substantially on the line 4-4 of Figure 2.

Figure 5 is a plan view of a film indicating the spaces where a plurality of exposures 4 have taken place.

Referring to the drawings in detail, it Wlll be seen that the numeral 5 denotes a plate, which is attached to the back of a camera 6, so that the opening 7 in the central portion of the plate register-s with the interior of the camera. This plate 5 is preferably rectangular in formation, having its longitudinal dimension disposed vertically. A stop cleat 8 is secured to the upper end of the plate 5 and has a pin 9 projecting therefrom. A plate 10 is slidably mounted on the plate 5 and for this purpose is provided with a pair of grooved cleats 11 which receive the longitudinal edges of the plate 5. The plate is reduced beyond Serial No. 259,794.

the cleats 11 to extend to each side of the plate 5. The plate 10 is formed centrally with a vertically disposed slot 12, in which is slidable a plate 13 fixed to the plate 5 and having an opening 14, registering with the opening 7. A pair of longitudinal horizontal channeled cleats 15 are fixed in spaced parallelism on the plate 10, one adjacent each longitudinal edge of the ends of said plate 10 and the channels are provided in opposed faces of the cleats. A rectangular holder frame 16 is slidable in the channels of the cleats 15 and is provided at its inner face with inwardly directed flanges 17. A cover 18 slips under a member 19 projecting from a bar 20 on one end of the frame 16 and the other end is provided with a pair of extensions 21, with one of which is engageable a pivoted cap 22, for holding the cover in place. A film pack 23 is disposed in the holder frame, between the flange l7 and the cover 18, so that the tabs 24 project out one end between the extensions 21.

This film pack is conventional and well known in the art. The frame 18 has an extension 25 at one end with a transparent panel 26 therein. A sheet 27 is interposed between the plate 5 and the plate 13 and extends a slight distance between the plates 5 and 10, for the purpose of keeping out light. The numeral 28 denotes a film in the film pack 23 on which eight exposures may be made, as indicated by the dotted line, defining spaces in dicated by the letters A, B, C, D, E, F, G, and H.

lVith the parts disposed as shown in Figure 1, it will be seen that the photographer may obtain the proper focus of the camera by looking through the panel 26 which registers with openings 14 and 17. After the focus has been made, the pack frame may be slid to the left until space E registers with the opening 14, at which time, a catch 29 will engage one of the notches 30 in the edge of plate 31 on the upper cleat 15, and the first exposure may be made. Then the frame may be moved over to the right for the second focus, and then the frame may be moved to the 1ft to bring space F opposite the openings 14 and 17 and an other exposure made, the parts 29 at this time being engaged with the second notch 30. Pictures G and H are made in like manner as will be apparent. WVhen exposure H is made, the frame extension 25 abuts a stop 32, on the end of the plate 10. A spring catch 33 has an opening receiving the pin 9, for holding the plate in abutment with the cleat 8, during these exposures.

By releasing the catch 33 from the pin, theplate 10 Will slide down, until the upper/wall.

of the slot 12 abuts the top edge of the plate 13 and then exposures A, B, C, and D may be made, in a similar manner-to exposures E, F, G, and H, as will be quite apparent. A removal stop 35 is provided, at the other end of the upper cleat 15, to prevent the top frame from coming all of the way out of the cleat.

In the practical embodiment of the invention now in use, I make eight pictures to a film, size 2% by 4% thus obtaining ninetysiX pictures to a twelveexposure film pack. This appliance may be made of wood or metal or both. The size of the film pack used may vary according to the size of picture desired, and of course, the appliance may be built in any size desired.

It is thought that the construction, operation and advantages of the invention will now be quite apparent to thoseskilled in this art Without a more detailed description thereof. The present embodiment of the invention has been disclosed in detail, merely by way of eX- ample, since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It is apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to, without departing from the spirit or scope of the invention as hereinafter claimed, or sacrifio ing any of its advantages.

pair of grooved cleats disposed intermediate theends of said second mentioned plate over lapping the side edges of said first mentioned plate to permit vertical movement with respect to the latter, a pair of horizontal channeled cleats extending longitudinally on the outer face adjacent each longitudinal edge of said second plate, a rectangular film pack holder frame slidably mounted within said pair of longitudinally extending cleats, said film pack frame provided with a flange projecting interiorly thereof at its inner face and a detachable cover flush with its outer face for the purpose of supporting a package of said flange and cover, cooperable means on the first and second plates for detachably holding said second plate in different adjusted positions with respect to the. first plate,

and cooperable means on the second plate-and films on the interior of said frame betweensaid film pack holder frame for selectively looking the-'latterin adjusted position with respect to the second plate.

In testimony whereof Iaflix my signature.

- DELBERT J. RAY.

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