US50284A - Duplicating-deflector for photographic purposes - Google Patents

Description

lUNITED STATES PATENT @rinesG DAVID SHIVE, OF PHILADELPHIA, PENSYLVANIA.

DUPLlCATlNG-DEFLECTOR FOR PHOTOGRAPHIC PURPOSES.

Specification forming part of Letters Patent No. 50,284, dated October 3, ISIS-5.

To all whom tt may concern:

Be it known that I, DAVID SH1VE,of the city of Philadelphia, in the State ot' Pennsylvania, have invented a new and useful Duplicating-Deflector for Photographic Purposes; and I do hereby declare that the following is a full, clear, and exact description ofthe construction and operation ofthe same, reference being had to the accompanying' drawings, making a part of this specilication, in which- Figure l is a top view, and Fig. 2 a side elevation of the said device; like letters of referenceindicating the same objects when in the different figures.

To make two or more photographic impressions ofthe same person or object in different positions or attitudes on the same plate has, of late, attracted the attention and puzzled the brains of photographers both in this country and Europe.

A number of devices have been suggested and used, but all of them have proved to be very deficient and objectionable, because of their showing a line or break between the dit'- ferent impressions, and thereby indicating the manner ot' production, and, ofcourse, destroying the illusionintended. With the use of all or any of the said devices it is by the merest accident that the defect referred to can be avoided; and to remedy it, in a measure, columns or curtains have been placed before the camera, so as to show in the center ofthe picture or between the iigures and hide the line or break that would otherwise appear upon its irregular surface.

To entirely remove all these difficulties and readily produce a perfect blending or uniformity of shade in the separately-made parts of the background of such pictures is the object of my invention.

It consists, substantially as hereinafter described and specified, ot' a deliector consisting of dead-black card-board, or other material that will in like manner neither reflect nor pass the light, attached in a vertical position, by means of a vibratile arm, to the forward end of a camera, so as to be two or three feet, more or less, therefrom, the said arm being capable of being readily adjusted to any suitable angle with anima-ginary vertical plane passing in the central line or axis of thelens, so that the said detlector will cut ott', obstruct, or deflect certain portions ot' the rays ot' light coming i'rom that side ot' the said vertical plane.

In the drawings, A is the dellector, and B the adjustable arm, attached to a removable clamp, G, whereby it can readily be secured upon the forward end otl a camera, the latter being indicated by the dotted lines my in both gures.

The detlector A is, in this instance, made ot' card-board paper cut, when of full size, about sixteen inches long, ten inches wide across its middle, and nine and a quarterinches wide at each endits side-edges being cutin thei'orm ot' a curve, as seen in Fig. 3. The inner side is covered with black velvetand the onter side painted dead-black; but dead-black paint will answer for both sides.

The arm B is made of two pieces of hard wood, b b2,joined together by means ofa metal sleeve, b3, but may be made in one piece, ifdesired. Its outer end is fitted with a metal port the deiiector A by enteringit at a. The inner end of the arm B is pivoted to the middle of of the clamp U, so as to allow the former to be turned horizontally, as occasion may require. An index-piece, bi, is lixed at right angles to this part of B, so as turn with it.

The clamp C is also made ot' wood, and consists ota narrow strip, c', having' parallel edges, which are grooved at c2 c2, so as to carry two clamping-pieces, c3 c3, which are attached by the grooves and appropriate tongues, so that they can be readily slid along' the under side of c', each clamp being also provided with a fixed tongue, c4, which slides in a corresponding groove in the underside of c', so as to keep it vertical and steady. A small block, c5, is fixed at each end ot c, in which a tighteningscrew, c, works and bears against its respective clam ping-piece c3.

Operation: The clamp C, being placed across the upper side of the forward end ofthe camera, is lixed firmly thereon by means of the clamping-pieces c3 c3, and screws cG c6, so that the pivot ot' the arm B will be directly over the axial. line otlthe lens, as seen in Fig. l, the dotted line c in the tigure indicating the said axial line. In taking a duplicate picture, the object is to be placed at any suitable distance from the camera and from the axial line ofthe lens, as heretofore. The operator now turns plate, bent upward, so as to receive and sup- Y the arm B s/o as to bring the deector A on the opposite side ofthe axial line r, and but a short distance from it. (See Fig. 1.) Supposing the rays of light proceeding from the object to the lens to be represented by the faint lines w w, it will be seen that nearly all the direct rays of light on the deeotors side of the axial line c are cut oit' or obstructed by the deilector A, and consequently that only about one-hali` of the-intended duplication will be produced in the picture in the camera; and after this operation is perfected, the object or person is removed to the other side ofthe axial line in like manner, and the deector then turned to the opposite side of it accordingly, and the picture completed.

In order to ei'ect accuracy in the distance of the deflector A from either side of the axial line Iv, two small pins,5 5, are txcd accordingly in the clamp C, so as to indicate the proper position ot' the point of the index-iinger b4 for either side.

Itwill be understood that the curved edges of the detlector A are intended to correct or straighten the blendinglineor lap ofthe background ot' the two impressions in the picture,

and thusto produce more perfect uniformity in the shade of the saine.

This invention will produce a picture having two or more impressions of the saine object or person in different positions or attitudes on the same plate, that will render it impossible for any one to shoT Where one impression ends and the other begins, and consequent-ly, the blending ot' the background being perfect, all intervening of columns or curtains as heretofore is entirely avoided. Its construction is exceedingly simple, and it can be applied and operated Without any difficulty, and with certainty iu the desired results.

Having thus fully described my duplicatingdetlector, what I claim as new and ot' my invention, and desire to secure by Letters Paten t, is-

The detlector A, arm B, and clamps C, constructed and arranged so as to operate, when applied to a camera, substantially as and for the purpose described.

DAVID SHIVE.

Witnesses:

BENJ. MoRrsoN, B. F. SHATTUCK.

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