US744498A - Plate-holder-changing box for cameras. - Google Patents

Description

No. 744:498. PATBNTED NOV. 17, 1903. L. DARLINGTON. PLATE HOLDER CHANGING BOX FOR CAMERAS.

APPLICATION FILED DEC. 9, 1902.

2 SHEETS SHE-ET 1.

N0 MODEL.

No. 744,498. PATENTED m. 17, 1903.

L..DARLINGTON. PLATEV HOLDER CHANGING BOX FOR CAMERAS.

APPLICATION TILED D130. 9, 1902.

- 2 SHEETSSHBET 2.

N0 MODEL.

mmmlmm i i i g I jj' tflf i E i i w z I l l 2 i i i a I a 5 E r i I Invenfor Patented November 17, 1903.

LIONEL DARLINGTON,

OF NEW YORK, N. Y.

PLATE-HOLDER-CHANGING BOX FOR CAMERAS.

SPECIFICATION forming part of Letters Patent No. 744,498, dated November 17, 1903.

Application filed December 9. 1902. Serial No. 184,566v (No modeLI To aZZ whom it may concern;

Be it known that I, LIONEL DARLINGTON, a citizen of the United States, residing at New York, county of New York, and State of New York, have invented a certain new and useful Improvement in Plate-Holder-Changing Boxes for Cameras, of which the following is a specification.

My invention relates to a new and useful improvement in plate-holder-changing boxes for cameras, and has for its object to provide a box to be detachably secured to the rear of the camera,in which a numberof plate-holders are held, and one side of this box being made of flexible material, so that the operator can grasp the plate-holders and change them from the front to the rear as they are exposed without admitting any light to the box; and a further object of my invention is to so construct the plate-holders and box that the weight of the whole apparatus will be comparatively little.

With these ends in view this invention consists in the details of construction and combination of elements hereinafter set forth and then specifically designated by the claim.

In order that those skilled in the art to which this invention appertains may understand how to make and use the same, the construction and operation will now be described in detail, referring to the accompanying drawings, forming a part of this specification, in which- Figure 1 is a horizontal section through my improved plate-holder-changing box, showing the same attached to the rear of a camera ready for use; Fig. 2, a similar view to Fig. 1, showing a plate-holder containing an exposed plate placed at the rear of the other plate-holder; Fig. 3, a cross-section through the plate-holder-changing box; Fig. 4, a face view of one plate-holder.

A representsthe plate-holder which, for the sake of compactness is made of thin sheet metal, preferably aluminium, three of its edges being turned over, as indicated at A, the plate being adapted to he slid behind these tu rned-over edges, and a thin flat spring being secured at the open end of the plateholder, as indicated at B, prevents the accidental displacement of the plate after once inserted in the holder; but by forcing this spring B downward the plate can be easily removed from the same.

A represents lugs extending outward from the plate-holder, by which the plate-holder is to be grasped in manipulating the same in the plate-holdenchanging box. These lugs are arranged at different points along the open end of the plate-holder, as indicated in dotted lines in Fig. 4, so that all of the lugs do not come in line with one another, only every third or fourth one being in line, so that room will be left between the lugs so that the same can be grasped by the fingers.

0 represents the plate-holder-changing box, the front of which is adapted to be secured to the rear of the camera by any suitable means, here shown as springs D, so as to make a light-tight connection therewith. This front end of the box is open, but can be closed by means of a slide E, so that light will be excluded from the box when the box is removed from the camera. One end of the box is made in the form of a frame, as indicated at F, and hinged to the box at the point F. The frame and box have grooves for the reception of the light-excluding strip W. This frame has secured to it a flexible covering G, of rubber, cloth, or otherlight-proof material, and this covering G is convoluted or folded, so that the same can be extended a considerable distance outward from the side of the boxthat is, a distance more than the length of one of the plate-holders. Inside of the box is arranged a plate H, the end which is next to the frame F being bent rearward on a slight curve, as indicated at H. Interposed between this plate H and the rear of the box 0 are a series of springs I, which tend to force the plate H toward the front of the box.

In filling the box in a dark room the frame F is swung back, and then a number of plateholders are inserted in the box between the front of the box and the front of the plate H, the plate H being forced rearward as the plate-holders are inserted. All of the plateholders are so inserted in the box that the plates are exposed toward the front of the box or the slide E. Then by closing the frame F the plates are confined in a light-tight box,

and after the camera has been focused and the ground glass removed the box G is simply attached to the rear of the camera, the slide E removed, and then the first plate can be exposed atonce. Afterthis plateis exposed the operator grasps the center of the covering G and by feeling with his fingers grasps the lug of the front plate-holder and withdraws the same. As soon as this front plateholder is withdrawn the springs I will act to instantly force the next plate in place of the one removed. Then the operator carries the plate-holder, with the exposed plate, to the rear and inserts the same between the last plate-holder and the plate H, as shown in Fig. 2. The curved end H of the plate 11 facilitates the inserting of the holder. Thus all of the plates maybe exposed without admitting any light to the box.

The advantage of my invention is thata large number of plates can be carried, and in carrying a dozen plates the weight will not be as great as one-half dozen plates in individual holders, and an apparatus which will hold a dozen plates will not take up as much room as three holders in which one-half dozen plates are held, and at the same time all of the holders are together in a compact form and may be carried attached to the camera or separate, as desired, and there being no complicated parts the apparatus is not liable to get out of order or become damaged in any way.

Of course I do not wish to be limited to the exact construction here shown, as slight modifications could be made Without departing from the spirit of my invention.

Having thus fully described my invention, what I claim as new and useful is- In a device of the character described a box having an open front, a frame hinged on the top of the box, the said frame and box having coinciding grooves, light-excluding strips in the grooves, the front section of the frame and the top of the box having corresponding slots, a slide in the slots, a flexible covering secured to the hinged frame, plateholders each comprising a strip of metal having its sides bent in to embrace edges of a plate and having a lug at the top, a followerplate in the box, having a rearwardly-curved upper end, a camming-surface and springs interposed between the follower-plate and the rear of the box.

In testimony whereof I have hereunto affixed my signature in the presence of two subscribing witnesses.

LIONEL DARLINGTON.

Witnesses:

RUDY COLE, FREDERIC W. Ens.

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