US700792A - Magazine-camera. - Google Patents

Description

UNITED STATES PATENT OEEIcE.

MAGAZINE CAMERA.

SPEGIFIGATIUN forming part of Letters Patent No. 700,792, dated May Application filed October 31. 1901. Serial No. 80,637. (No model.)

To all whom it may concern:

Be itknown that I, DAVID ABRAHAM Low- THIME, a subject of the King of Great Britain and Ireland, residing at 17 and 1S Paradise street, Finsbury, in the city and county of London, England, have invented a new and useful Improvement in Magazine-Cameras (for which I have applied for Letters Patent in Great Britain, No. 7,807, bearing date the 17th day of April, 1901; in Germany, bearing date August 13, 1901; in France, No. 302,495, hearing date August 30,1901, and in Belgium, No. 125,908, hearing date August 30, 1901,) of which the following is a full and complete specification.

This invention relates to a new or improved means for loading and unloading magazine, hand, or other photographic cameras with plates or cut films in daylight without the necessity of using a dark room.

In the accompanying drawingsgvhich illustrate by way of example one means of carrying this invention into practice, Figure 1 is a view in sectional side elevation of a handcamera charged or loaded with plates or films ready for exposure; and Fig. 2 is a similar view showing the plates or films ready for withdrawal from the camera after exposure; and Fig. 3 is a sectional view, in side elevation, on an enlarged scale, of a packet or box of plates or films packed for transport and ready for insertion within the camera.

Similar letters refer to similar parts throu gh-' out the several views.

The case or box a (see Fig. 3) is formed of non-actinic or light tight material of a size and shape adapting'it to contain the desired size and desired number of plates on or cut films, together with their requisite backingsheets holders, or their equivalents. The lid of this case or box is formed from a strip a of non-actinic or light-tight material, preferably ruby-colored fabric, which is attached to the box by oneor more covering-strips c of paper or other material appreciably weaker or thinner than the strip a. The strips of paper a are secured to the box and strip a by any suitable adhesive, the arrangement being such that no part of the lid is secured directly to the box or case, but only through the medium of the paper or other material. The strip a after forming the lid to the case or box is bent or doubled on itself at a and the continuation thereof passes over the lid and terminates in a suitably-stiffened tab or end. For convenience in manufacture the box is formed from two parts, the one to which the strip a is attached sliding over the other or bottom part. This latter partis provided with a hole orcut-away portion a so as to allow of the plates being automatically fed forward by means of a spring when in position in the camera. A case or box so constructed and charged alternately with plates mor films and backing-sheets 5c, holders, or their equivalent is carried till required for use in any suitable box.

The camera Z) for use with this system of changing plates or films is provided at its back end with a hinged or removable door 0 to allow of placing the sealed case or box a, containing the plates :0 or films, onto a ledge or shelf d, provided within the camera at a certain distance above the bottom thereof.

In order to charge or load the camera, the end door 0 is opened or removed and the sealed case or box (0, containing the plates or films, is inserted in such a manner that the attached strip or tab of material a is doubled over the front edge of the ledge or shelf (Z and brought outside over the top 6 of a sliding box 6, placed within the camera between the bottom thereof and the ledge or shelf 61, as shown in dotted lines on Fig. 1 of the drawings. The box 6 is held within the camera by a spring bolt or catch e and is provided with a hinged sliding lid 6, which can be held in its closed position by means of a button a engaging a slot on its under side, and in its open position by a button 6, carried on the under side of the camera. This box 6 is for the purpose of. receiving the plates or films a; after exposure, together with their backingsheets or equivalents. (See Fig. 2.) The case or box a of plates or films is placed in position, as shown, so that the front edges of the sides of the case or box 66 engage or contact with ribs or projections Z), formed on the sides of the camera. The end door 0, which is provided with a spring 0 on its inner side in order to feed the plates or films forward to the plate-changing device f, which may be of any suitable construction, but which is preferably provided with one or more springs f on its under side, adapted to guide and engage the plates after exposure, is then replaced. The box 0, adapted to contain the exposed plates or films, slides light-tightly into the bottom of the camera, and when in position, with its lid 6' closed, the strip or tab (1/, attached to the sealing or covering part of the case or box a, is pulled so as to be entirely withdrawn, thus uncovering the first plate or film ready for exposure. The hinged lid 6 of the box 6 is then slid open and preferably folded down and clipped under the bottom of the camera, as shown in Fig. 1. The back end of the camera I) is provided with an auxiliary or outer door g, inclosing both the end door 0 and sliding box c. When all the plates to or films have been exposed, (see Fig. 2,) the lid 6 of the sliding box 0 is closed, which is then withdrawn from the camera Z).

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

1. A means for loading and unloading photographic cameras with plates comprising a case adapted to contain the plates placed alternately together with their backing-sheets and having its front side formed from a flexible strip of non-actinic material so attached as to be easily torn away from the case in order to uncover the foremost plate therein, and a camera provided at its back end with a door for introducing and with a shelf for supporting the said case and further provided with a box sliding light-tightly therein so placed as to admit of receiving the plates after their exposure, the said sliding box being provided with a sliding lid, as set forth.

A photographic camera comprising a transversely-arranged shelf (Z forming a ledge for supporting the plates, a box c-with movable lid esliding light-tightly within the camera between the bottom thereof and the shelf d and adapted to contain the plates after exposure, a door 0 formed to allow access to the plate-holding compartment formed between the walls of the camera and the shelf (Z in combination with a case a adapted to be placed on the shelf (Z within the camera and to contain plates .4 placed alternately with their backing-sheets w and having a front side formed from a flexible strip a of nonactinie material attached to the case by covering-strips a of weaker material than the strip a, which strip a is doubled 011 itself in order that its free end may be passed over the shelf (Z to protrude from the camera and on being pulled uncover the first plate .ready for exposure, as set forth.

In witness whereof I have hereunto set my hand in presence of two witnesses.

D. A. LOWTITIME.

iVituesses:

A. liliLtwooi) FLAUK, GEORGE ISAAC BRIDGES.

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