US396656A - Erington - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

F. A. HETHERINGTON.

MAGAZINE PLATE HOLDER FOR PHOTOGRAPHIG PLATES.

No. 396,656. Patented Jan. 22, 1889.

Witweoqem N. PETERS. mnwuim m m, Wishmgicn. D.C.

' (No Mode'l.) 2 Sheets-Sheet 2.

F. A. HETHERINGTON MAGAZINE PLATE HOLDER FOR PHOTOGRAPHIO PLATES. No; 396,656. Patented Jan. 22, 1889.

project through the curved slots O llnrrnn States FREDERICK A. HETHERINGTON, OF BROOKL TO HENRY A. W.

itiAGAZi N E PLATEfii-OLDER F YO OD, OF KEV? 'N, ASSIGNOR OF OJE-HALF YORK, N. Y.

l 1 d H Application filed June 1, 1888. Serial l lo. 275,953. (2T0 model.)

To all whom it may concern.-

Be it known that I, FREDERICK it. Hern- ERINGTOX, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Magazine Platellolders l'or Photographic Plates, which invention is fully set forth and illustrated. in the following specification and accompanying drawings.

This invention relates more especially to holders for that class of portable cameras commonly known as detectivecameras, although it may also be applied to other classes. its object is to provide suitable means for carrying any number of sensitive plates in such manner that they will be ready for instant use without the usual manipulations of drawing a slide or changing plateholders, and also to economize the amount of space occupied by the plates and their holders, thereby reducing the size of the camera to the smallest limit. These objects are attained'by means of the devices shown in the accompanying drawings, in which Figure 1 is a perspective drawing of the device, showing it as detached from the camera-box. Fig. 2 is an end view from the front, showing a section of a camera-box. Fig. 3 is a perspective view of a single leaf of the magazine or combination holder.

Similar letters indicate similar parts in the several figures.

The plates A A are of thin metal and form the two sides between which the leaves ll of the plate-holder operate. Said plates are let into the inner sides of the wooden eamera box, so as to be flush with their surfaces, and are provided with slots, as shown at 13 *3, Fig. 1, and also with a curved slot, as O (1, Fig. 1. The slots 13 3 form guides for the projecting ends of the rods r, which form the hinge-pivots of the several leaves of the holder, as shown at D, Fig. 1.

E and E are thin flatarms or levers, having their outer ends bent sidewise at right angles to their bodies, forming hooks which in the side plates, as shown at 11 11, Fig. The lower ends of said lovers are joined to the J F F, which. are securely lixed to the shaft G, one end of which is squared to suit an ordinary clock-key, and projects somewhat beyond the lace of the hub. These lc vers throw down a plate upon which an ex posure has been made, so that another and fresh plate may come into position. To accomplish this, the hooked ends of the levers engage with slight projections or cleats R E, Fig. on the sides of each leaf M of the holder, so that when the key is given a quarterturn the levers go down, carrying with them one leat' until it rests at right angles with its former plane. By reversing the action of the key the lovers turn back and engage with another leaf, and so 'on. The hooked ends of the levers are so formed that in the reverse action they will spring over the cleats on the next leaf and get into position for bringing it down in i turn.

In the case of d etcctive-camcras, where it is impracticable to focus upon a ground glass for each view,the focusissetoncelforallbymcans of a ground glas used temporarily when the camera is constructed. The t'ocuspoints for various distances being once established, they are indexed or marke l upon some part of the camera or its mechanism. It is therefore important that the sensitive plate when ready for an exposure shall be in the exact plane that was occupied by the ground glass when the focus was set. This end is accomplished as follows:

l iet'erring to Figs. 1 and 2, I andl are thin ilatmetal spring-rods, the lower ends of which are pivoted by crank-pins to the hubs F F. To the other ends of these rods are riveted tongues .l and .l, the upper edges of which are cut inclined, as shown. In the side plates, A and A, and directly in line with these tongues, are out. slots, as shown at K, 1. \Yhen the shaft G is turned by means of the key, the spring-rodsi and i are drawn downward, and by their action and a permanent set which is given to these rods their upper ends spring inward at the same time, thereby pushing the tongues J .l thro'ughthe slots K it, and when the downward stroke is complete the tongues project inside of the side plates far enough to form a stop for the advancing leaf of the holder, so that it will always stop at this fixed point, as shown at L L, Fig. 2. lVhen the shaft is again rotated backward, the springarms I I rise, and the inclined edges of the tongues J J coming in sliding contact with the upper end of the slots K K, said tongues bend back or straighten said arms, and are thus withdrawn from the slots K K, leaving the way clear for another leaf to pass.

Fig. 3 shows the form which I have preferably adopted for the leaves M of the holder. Said leaves may be constructed of thin sheet metal. M is the ,main body of the leaf. P P P are three of its flanges, which are turned backward. S is a flange which is turned forward, and is formed so as to contain the piece forming the links or hinges Q Q, which are drilled to receive hinge-rods a", which extend from one side to the other, and which project far enough outside of the hinge to work in the slots in the side plates, as shown at D, Fig. 1.

N N are channel-pieces fixed to the main body M, and their office is to hold the sensitive plate in position by its edges, the plate being kept in position by the springs O O, which keep the plate pressed firmly against the channel-pieces N N.

It is intended that the sensitive plates contained in the plate-holder shall all be protected against leakage of light by the flanges P,

P, P, and S, which are so fitted that no plate is exposed to light excepting the one ready for use.

Having thus fully described my said improvements, as of my invention I claim 1. The combination, in a plate-holder for photographic plates, of a series of leaves linked or hinged together and having flanged edges for protecting the photographic plates, with side plates having guide-slots, as described, substantially as and for the purposes set forth.

2. In a magazine plate-holder for photographic plates, the combination of a series of leaves hinged directly together, as shown, with side plates having guide-slots arranged so that by the .act of turning a leaf through an arc'of ninety degrees the next following leaf shall come into position for another exposure, substantially as set forth.

3. The combination, in a magazine plateholder for photographic plates, of a series of hinged leaves having slotted side plates, as described, with operating levers, rods, and stops, substantially as and for the purposes set forth.

F. A. HETHERINGTON.

' IVitnesses:

FRANCIS P. REILLY, JOHN TULLY.

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