US658607A - Projecting apparatus. - Google Patents

Description

Patented Sept. 25, I900.

Sheet I.

3 Sheets- A TTORNE Y8 No. 658,607. Patented Sept. 25, I900.

F. J. ADAMS. PBOJECTING APPARATUS.

(Application fild Sept. 11, 1899.)

3 Sheets-Sheet 2.

(No Model.)

ATTORNEYS lJNiTED STATES PATENT OFFICE.

FRANK J. ADAMS, OF NEW YORK, N. Y., .ASSIGNOR TO THE NATURASCOPE COMPANY, OF SAME PLACE.

PROJECTlNG APPARATUS.

SPECIFICATION forming part of Letters Patent No. 658.607, dated September 25, 1900.

Application filed September 11, 1899. Serial No. 730,154- (No model.)

To all whont it TIMI/y concern:

Be it known that I, FRANK J. ADAMS, of the city of New York, borough of Manhattan, county and State of New York, have invented a new and Improved Projecting Apparatus, of which the following is a full, clear, and eX- act description.

The object of the invention is to provide a new and improved projecting apparatus which is simple and durable in construction and arranged to project the image of any desired object in its natural colors enlarged and perfect in its most minute detail on a wall, screen, or the like.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of my invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement. Fig. 2 is a cross-section of the same on the line 2 2 in Fig. 1. Fig. 3 is a longitudinal sectional elevation of the same. Fig. 4 is a front end view of the same, showing the dissolving-slide and connected parts. Fig. 5 is a cross-section of the casing, showing the shutter arrangement when using the dissolving-slide. Fig. 6 is a reduced sectional plan view of the same. Fig. 7 is a rear end elevation of the improvement as arranged for dissolving views.

The apparatus illustrated in the drawings is provided with a casing A, preferably made cylindrical and mounted on legs A for supporting the casing in a horizontal position on a table or other support. The casing A is provided at its front end with a cap B, on the inside of which are arranged a number of objective lenses 0 O of which the lens 0 is in the middle of the cap and the lenses 0 O are on opposite sides thereof, as is plainly indicated in Fig. 2. On the inside of the easing and grouped around the lenses (J C C are arranged a plurality of incandescent electric lamps D and an arc-lamp E, preferably located at the top and mounted in a casing E, forming part of the casing A, a shield E being in the front of the electrodes of the lamp to prevent escape of the rays of light through the casing E into the room in which the apparatus is located. The electric lamps D and E are connected by suitable wires with a source of electricity, so that the interior of the casing is illuminated when the lamps are lighted; but the rays of light emanating from said lamps do not directly strike the lensesO C 0 through which only reflect-ed light passes to produce the image of the object held in the rear end of the casing upon a screen, wall, or other device exterior of the casing A.

The rear end of the casing A is closed by a cap F, in which is held a removable end plate F, formed with a central aperture F to the wall of which is secured a sleeve G, made of canvas or other flexible fabric material, extending to the outside of the casing and permitting the operator to pass with his hand the object through the sleeve into the interior of the casing A, so that this object is illuminated by the electric lamps D and E,

and the image of the object is thrown by the central lens C upon the screen, it being understood that in this case the other lenses 0' C are closed by suitable covers or are completely removed from the cap B. The aperture F is arranged directly opposite the lens 0, and as the interior of the casing A is preferably painted white it is evident that the object held in the focal plane of the lens 0 is highly illuminated by the lamps and the image of the object is thrown on the screen in natural colors and of immense proportions, so that most minute details of the object will appear on the screen.

I prefer to use a plurality of incandescent lamps D and an arc-lamp E, as described and shown, for the reason that the object is highly illuminated with a mellow light produced by the combination of the rays from the incandescent lamps and those from the arc-lamp.

For dissolving views a dissolving-slide H is employed, mounted to movetransversely in bearings or guideways I, held on the front face of the cap B. This dissolving-slide H is so arranged that it at all times covers the central lens 0, but alternately opens the lenses 0 0 For this purpose the dissolving-slide H is provided on its outer face with a rack J, (see Fig. 4,) in mesh with a pinion J, secured on the upper end of a shaft J mount ed to turn in suitable bearings held on the front face of the cap B. On the lower end of the shaft J is secured a bevel gear-wheel J in mesh with a bevel gear-wheel J, fastened to the forward end of a longitudinally-extending shaft J journaled in suitable bearings attached to the under side of the casing A. On the rear end of the shaft J is arranged a hand-wheel J under the control of the operator to turn the shaft J and thereby impart a rotary motion to the shaft J by the gear-wheels J and J lhe rotary motion of the shaft J causes a transverse movement of the dissolving-slide H by the action of .the pinion J on the rack J, so that the slide H gradually uncovers the lens 0 or C and covers the other lens 0 or O. For dissolving views the cap-plate F, previously referred to, is removed and replaced by a capplate F having two apertures F F in exact alinement with the lenses 0 C The objects of which images are to be thrown successively on the screen are displayed in the apertures F F to be illuminated by the rays of light from the lamps, and the apertures F F are adapted to be alternately opened and closed by a shutter K, made semicircular in form and secured on a vertically-disposed shaft K, journaled in suitable bearings on the inside of the cap-plate F The lower end of the shaft K extends through the cap F and ear ries atits outer end a bevel-pinion K in mesh with a bevel gear-wheel K secured to the shaft J so that when the latter is turned a rotary motion is given by the gear-wheels K K to the shaft K to swing the shutter K from one opening to the other, so as to alter.- nately open and close the apertures F F in unison with the movement of the dissolvingslide I-I, alternately and gradually uncover.- ing and covering the lenses C 0 In using the apparatus for dissolving views an object is first placed in the aperture F the slide H is moved away from the lens 0, so that the image of this object is thrown on the screen, and then the operator places the other object into the opening F and turns the hand-wheel J so'that the dissolvingslide H is gradually moved transversely to cover up the lens 0 and to uncover the lens 0 and at the same time move the shutter K from the closed opening F over the opening F to close the latter, so that the image of y the object on the screen gradually disappears and the image of the object in the opening F gradually appears on the screen.

ject in the rear of the casing, it is necessary.

that the latter be made in sections, sliding one into the other or formed with bellows to allow the operator to make the desired ad justment.

In order to permit a ready exchange of the rear cap-plates for the different purposes mentioned, I provide each cap-plate with a plurality of wing-nuts F adapted to pass through slots in an annular flange F of the cap, the wing-nuts being then given a quarter-turn, as shown in Fig. 7, for locking the plate in position on the flange.

It is expressly understood that the highlyilluminated object in the rear of the casing is refracted by the lenses, so as to appear greatly enlarged and in natural colors on the screen, the lenses being protected from the direct rays emanating from the lamps as the latter are grouped around the casings of the lenses, as illustrated in the drawings.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patentl. A projecting apparatus, comprising a casing, a plurality of lenses in the front end of the casing, a plurality of lamps in the front end of said casing and grouped around the lenses in such a manner as to prevent their rays of light from passing directly to the lenses, a dissolving-slide movable over the lenses, and a shutter at the rear end of the casing, for alternately opening and closing a plurality of openings in the rear end of the casing, substantially as shown and described.

2, A projecting apparatus, comprising a casing, a plurality of lenses in the front end of the casing, a plurality of lamps in the front end of said casing and grouped around the lenses in such a'manner as to. prevent their rays of light from passing directly to the lenses, a dissolving-slide movable over the lenses, a shutter at the rear end of the casing, for alternately opening and closinga plurality of openings in the rear end of the casing, and means for simultaneously actuating'the said dissolving-slide and said shutter, substantially as shown and described.

FRANK J. ADAMS.

Witnesses:

THEo. G. Hos'rER, JNo. M. BITTER.

Images