US590837A - Means for guiding kinetoscopic films - Google Patents

Description

(No Medel.)

L. E. HBNRIBT. MEANS FOR GUIDING KINETOSGOPIC FILMS, &c. A

Patented Sept. 28,1897,

Allomy I UNiTnD STATES PATENT Gwinn.

Louisa. HENRIET, or NEWARK, NEW JERSEY.

MEANSv FOR GUIIDING KINETOSCOPIC FILMS, SLC.

SPECIFICATION forming part ofv Letters Patent No. 590,837, dated September 28, 1897.

Application filed April 19,1897. Serial No. 632,856. (No model.)

scopic Films; and l do hereby declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertainsto make and use the-same. Y

This invention relates to apparatus forexhibiting pictures, and more especially to that classof such apparatus in which the impression is given to the eye of objectsvin motion. In this class ofapparatus it is necessary to move intermittently the lm carrying the pictures in such manner as to cause the series of pictures thereon to be brought and permitted to remain in the illuminated field for an interval of time exceeding the time required to effect the displacement of any one picture and the substitution of another therefor, and to release the pressure exerted upon the film in the feeding device when the same returns to the position ready to grip the iilm again. The mechanism employed for this purpose forms the principal object of my invention; and it consists in a movable clamp running in suitable guides while playing to and fro under the action of an eccentric, one jaw of the clamp forming part of a movable frame, while the other jaw is pivoted to said frame and is timely thrown in and outof engagement with the jaw on the frame by means of another eccentric or cam, as will be more fully described hereinafter with reference'to the accompanying drawings, in Which- Fi gu re lis afront elevation of the improved mechanism, and Fig.` 2 a plan view of the same.

A is a frame of any shape, but preferably rectangular, having projecting ends A' A', which are suitably guided in straps B B, and provided with bars of tempered steel or other hardened metal C, against which the edges of the cam D operate, so as to impart to the frame A a reciprocating motion.

E is a frame laterally projecting from the frame A, adapted to form a guide for the film F carrying the pictures. One of the sides of said frame E forms a jaw against which the film is pressed while the eccentric D is acting to bring the film down.

The clamping device used for this purpose consists of a frame G, pivoted at g to a suitable point of the reciprocating frame A. The upper end of said frame G is imprisoned under a strap H, so as to be guided when the frame G is oscill'ated on its pivot. An arm I, forming part of the frame G, carries in its forked end an arm K, which is pivoted thereto at lo, andthe lower end of which is guided in the forked portion l of the frame G, and having the outer end connected to the frame G by a coiled spring L, said coiled spring having a tendency to draw the arm K toward the middle bar ofthe frame G. A cam M, preferably of the shape as shown in Fig. l, acts between said middle bar of the frame G (which may be armed with a steel strap or strapvof .other hard metal g', secured to the frame G) and the spring-actuated arm K, which is also made of hard metal, adapted to stand wear and tear.

The oscillating jaw E" in the frame or box E is secured to a lateral projection of the frame G, as shown, and provided within the edges with teeth c, adapted to enter into corresponding depressions e of the jaw E. The film F passing through is provided within the two edges with two parallel rows of perforations into which the teeth e will register.

This mechanism acts in the following manner: The cams D M are secured to a shaft which is constantly revolving. Then said cams are in the position shown in Fig. l, the cam will press the trame G around its pivot, so that thejawE, with the teeth c, enters into the holes in the film, whereupon the cam D commences toA act upon the frame A andthrowing the .same down the film firmly clamped in the box E'will be obliged to follow. The arm K, under the influence of the spring L, will lean against the cam M, so that the latter in its reverse positionthat is to say, whenV the cams and shaft have turned for one hundred vand eighty degrees-will commence to move the oscillating frame G without any jarring and will disengage the jaw E" from the film, the arm K yielding, as is evident, when the frame G has reached the limit of the guide H. The cam D commences now the upstroke andwill move the frame in IOO the guides B in an upward direction without producing any pressure upon the film, which thus remains in the advanced position. The same play is repeated when a full revolution of the shaft has been effected.

I do not limit myself to the use of the teeth e, for I may use in the clamping device a jaw E without depressions and a jaw E" without teeth upon a lm being non-perforated. In this case it is preferable to line the surfaces of the jaws with soft material-such as rubber, cloth, leather, &c.

Having thus described my invention, I claiml. Mechanism for moving picture-carrying strips or lms consisting of a main frame, suitably guided and reciprocated by a cam, and of a second frame pivoted to the first and oscillated by a second cam on the same shaft, which carries the first cam, the reciprocating frame carrying a box with one side forming a jaw supporting the film, the second or reciprocating frame carrying a jaw adapted to move within said box against the side supporting the film and thereby clamping the film and forcing the same to follow in the motion, substantially as described and for the purpose set forth.

2. A mechanism for moving picture-carrying strips or film, consisting of a main frame, suitably guided and reciprocated by a cam and of a second frame pivoted to the first and oscillated by a second cam, said second frame having a pivoted arm provided with a spring at its free end whereby there are formed surfaces for the reaction of the second cam, by which said second frame is oscillated, substantially as described and for the purpose set forth.

3. Mechanism for moving picture-carrying strips or films consisting of a main frame, suitably guided and reciprocated by a cam, and of a second frame pivoted to the first and oscillated by a second cam, the reciprocating frame carrying a box with one side forming a jaw supporting the lm, said jaw being provided with depressions or notches corresponding to the perforations at the edges of the film, the second or oscillating frame carrying a jaw adapted to move within the said box against the side supporting the film and being provided with points or teeth adapted to engage the perforations of the film and the depressions in the opposite jaw, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

LOUIS E. HENRIET.

Vitnesses:

LoUIs D. FRENoT, HENRI VARLET.

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