US1236319A - Cinematographic apparatus. - Google Patents

Description

J. KLEIDMAN.

CINEMATOGRAPHIC APPARATUS.

APPLICATION FILED MAR-20.1917.

1 ,236 ,3 1 9 Patented A11 7, 1917'.

2 $HEETSSHEET I.

MAW

INVENTOR.

WITNESS I, 7

3. KLEIDMAN.

CINEMATOGRAPHIC APPARATUS.

APPLICATION FILED MAR-20, 1911.

1,236,319. Patented Aug. 7, 1917.

l DIJUIIUDDHDDDIIHOU GOOD ODUDUI] IZDUDDIIIIIUDUDDUUUGUIJHD DEED UIJUIIIOLI DUIJG E E III MINIMUM. 58 [5 K I INVENTOR. WITNESS V7 AT RNY UNITED STAS PATENT OFFICE.

JOSEPH KLEIDMAN, OF NEW YORK, N. "5. ASSIGNOR, BY MESNE ASSIGNMENTS, 1'0 TI-IE AHEADOFIT PICTORIAL 00., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CINEMATOGRAPHIC APPARATUS.

Specification of Letters Patent.

Patented Aug. '7, 1917.

Application filed March 20, 1917. Serial No. 156,112.

To all whom it may concern:

Be it known that I, JOSEPH KLEIDMAN, a subject of the Czar of Russia, and a resident of the city of New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Cinematographic Apparatus, of which the following is a specification.

The present invention relates to cinematographic apparatus; and more particularly to one that is designed for homes, schools, and small auditoriums, where the present large commercial machines would be too expensive, or where there are no facilities for operating these large machines.

The main object of the present invention is to generally simplify the construction and operation of small cinematographic apparatus, more particularly in a manner that they can be operated by children without danger, and without their efficiency being impaired.

A further object of the invention is to produce a novel focusing attachment for cinematographic machines, some elements of which may serve at the same time for placing the film gate under pressure for the wellknown purpose.

, A still further object of the invention is to devi e a cinematographic apparatus of the type described which can be manufactured on a commercial scale, or in other words, one which is not so difficult to produce as to be beyond the reasonable cost of such a device.

With these and other objects in view, which will more fully appear as the nature of the invention is better understood, the

same consists in the combination, arrangement, and construction of parts hereinafter described, pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that many changes may be made in the size and proportion of the several parts and details of construction within the scope of the appended-claims without departing from the spirit .or sacrificing any of the advantages of the invention.

One of the many possible embodiments of the invention is illustratedin the accompanying drawings, in which Figure 1 is a side elevation of an apparatus constructed in accordance with the present invention; Fig.2 is a section taken on line 2 -2 of 1; Fig 3 is a longitudinal vertical section taken through a portion ,of the apparatus, on a larger scale; Fig. 4 1s a section taken on line 4-4 of Fig. 3; Fig 5 is a section taken on line 55 of Fig. 1; and Fig. 6 is a section taken on line 6-6 of Fig. 2.

In the drawings, the numeral 10 indicates a base, upon which is mounted a lamp house 11. Within this house is disposed a lamp socket 12, the terminals or binding posts of which are connected with electric conductors 13, forming a circuit with a suitable source of electric energy. A lamp 14 of any suitable construction is fitted into the socket 12. The lamp house is, preferably, made of metal, and its rear wall 15 bent or curved to present an inner concaved surface, that may be polished or otherwise provided with a mirror-like face. This face constitutes a reflector for the lamp.

In front of the lamp house is located upon the base a frame 16, in the shape of a casing, having in its front wall 17 a vertically extending elongated opening 18. The upper portion 19 of this opening constitutes the exposure aperture of the device, and in alinement therewith is disposed in front of the lamp 14 a condensing lens 20 for the wellknown purpose. This lens is held within a lens tube 21, inserted into a circular opening 22 in the front wall 23 of the lamp house. With the front face of the wall 17 of the frame 16- cooperates a film gate 24, provided with an oblong aperture 25, corresponding to the size and configuration of an individual picture upon the film strip. This gate is shiftably mounted upon two forwardly extending horizontal spindles, de noted by the numerals 26 and 27. These spindles are in any suitable manner fixedly attached to the front wall of the casing 16, the gate havingholes 28 and 29, through which the spindles 26 and 27, respectively, extend. f 1

One of the projection lenses of the apparatus, denoted-by the numeral 30, is carried This slide is provided with holes 33' threaded, its threads meshing with those of a nut 36, that is milled at its peripheral portion to facilitate rotation of the same. This nut bears against the front face of the slide 32, and constitutes with the threads on the spindle 27 the means for properly focusing the pictures. By rotating this nut in one or the other direction, the slide is shifted on the spindles 26 and 27 correspondingly. The spring 35 has a twofold purpose, to wit: first, it keeps the film gate under tension, and second, it holds the slide firmly in position against. the milled nut 36.

The means for intermittently feeding the film past the exposure opening comprises in the case illustrated a sprocket 37, which is fixedly attached to a shaft 38, that is rota.- tably mounted in the frame 16. The means for imparting intermittent motion to this sprocket is of the Geneva-movement type, and includes the well-known star-wheel 39, that is fixedly secured to the shaft of the feeding sprocket, and coiiperates with a pin 40, the latter being attached to the fly-wheel 40 of the machine, the said fly-wheel being fastened to a countershaft 41. This countershaft is rotatably mounted in the frame 16, and has keyed or otherwise attached thereto a pinion-i2, meshing with a gear 43, which is fixed to the main or-driving shaft 44 of the apparatus. This driving shaft is properly journaled in the frame 16, and carries a crank 45 for actuating the same.

The supply reel 46 of the machine is loosely mounted upon a spindle 47, the latter being carried by a support 48, which is either made integral with or is in any preferred way secured to the frame 16. The film 46 travels from the supply reel between the frame 16 and the film gate 24, and is in engagement with the feeding sprocket 37, with which is associated a spring-pressed guide roller 49 upon the frame 16. Thence the film is led to a wind-up reel 50. This reel is provided in its flange 51 with an*ob long opening 52, in which is seated the similarly shaped end 53 of a spindle 54, the lat ter being attached to a grooved pulley 55 and rotatably mounted in one of the side walls of the frame 16. In the flange 56 of the reel 50 is formed a round opening 57, into which projects a spindle 57 that is fixedly attached to the opposite side wall of the said frame. The pulley 55, with its spindle 54, is shiftably mounted upon the frame 16, more particularly it is shiftable in the direction of the longitudinal "axis of the said spindle to permit the wind-up reel with the film thereon to be removed, at will, from the machine. To keep the spindle 54 in engagement with the said wind-up reel, there may be providedany suitable mechanism, for instance a bracket 58, in combination with a spring 58, the said spring bearing against the pulley and the bracket. A bolt 59 extends through the bracket 58, the inner end of said bolt being seated in a bore 60 in the pulley and serving as an additional journal for the said pulley. The spring 58 is, preferably, coiled upon the bolt 59. I

. The fly wheel 40 is shaped to constitute two pulleys, denoted in the drawings by the numerals 61 and 62. The pulley 61 is in alinement with the pulley 55 above mentioned, and the pulley 62 registers with a pulley 63, the latter being fixedly attached to the spindle 47 upon which the supply reel is mounted. Normally, a belt 64, shown in dotted lines in the drawings, runs over the pulleys 61 and 55, whereby the wind-up reel is rotated in the proper direction during the normal operation of the machine. In case it is intended to rewind the film from the wind-up 'reel onto the supply reel, a belt 65, shown in dotted lines in the drawings, is drawn over the pulleys 62 and 63, and the machine run in a direction opposite to its normal running.

\Vith the exposure opening coiiperates a shutter 66, disposed in rear of said opening between the projection lens 30 and the condensing lens 20. This shutter is made in the form of a plate, pivoted at 67, below the lower edge of the exposure opening, to the frame 16. lVith this shutter coiiperate two cams 68, rigidly secured to the countershaft 41. The cams 68 and the pin 40 are timed in such a manner that, whenever the said pin causes the star wheel to move and thus to feed the film, the cams raise the shutter, cutting off the light from the film band. On the other hand, when the film band is stationary, the shutter drops by its own weight and uncovers the exposure opening.

The operation of this device is as follows: The threading of the film is obvious from the foregoing. The film is led from the supply reel down between the front plate of the frame 16 and the film gate 24, and passed between the sprocket 37 and the springpressed guide roller 49. It is then attached to the wind-up reel in any suitable manner, for instance, there may be secured to the latter a spring clip 69 of the wellknown construction. The end of the film band is kept -by the said clip against the hub portion of the wind-up reel. In order to pass the film hand between the gate and the frame 16, the said gate is shifted against the tension of the spring 35 toward theslide 32, and released after the film band has been properly engaged with the sprocket. I

The picture is focused by turning the milled nut 36 in one or the other direction, as the case may be.

It is thought that a description of the operation of the film feeding mechanism is unnecessary, as the same is well-known and, n fact, does not form part of the present invention. Attention is however called to the fact that, by mounting the pin of the Geneva-movement on the fly-wheel of the machine, the construction is simplified and sudden jars in. the operation of the device efiectively prevented.

l vhat I claim is: i

1. In a cinematographic apparatus, the combination with a frame having an exposure opening, of a spring-pressed lens carrying slide in alinement with said opening shiftably disposed upon said frame, and focusing means coacting with said spring and bearing against said slide.

2. In a cinematographic apparatus, the combination with a frame having an exposure opening, of horizontally extending spindles fixedly attached to said frame, a spring-pressed lens carrying slide shiftably mounted upon said spindles in alinement with said opening, and focusing means upon one of said spindles coacting with said spring and bearing against said slide.

3. In a cinematographic apparatus, the combination with a frame having an exposure opening, of horizontally extending spindles fixedly attached. to said frame, a lens carrying slide shiftably mounted upon said spindles in alinement with said opening, a spring coiled upon one of said spindles bearing against the rear face of said slide,

said spindles in alinementwith said opening, a spring coiled upon one of said spindles bearing against the rear faceof said slide, one of said spindles being screwthreaded, and a nut having its threads in mesh with the threads on one of said spin dles, said nut bearing against the front face of said slide.

5. In a cinematographic apparatus, the combination with a frame having an ex posure opening, of horizontally extending spindles fixedly attached to said frame, a lens carrying film gate slidably mounted upon said spindles and cooperating with said frame, and a spring coiled upon one of said spindles bearing against the front face of said gate.

6. In a cinematographic apparatus, the combination with a frame having an exposure opening, of horizontally extending spindles fixedly attached to said frame, a lens carrying film gate slidably mounted upon said spindles adapted to cooperate with said frame, a lens carrying slide also shiftably mounted upon said spindles in alinement with said exposure opening, one of said spindles being screw-threaded, a nut having its threads in mesh with the threads on one of said spindles, said nut bearing against the front face of said slide, and a spring coiled upon one of said spindles bearing with one of its ends against the rear face of said slide and with its other end against the front face of said gate.

Signed at New York, in the county of New York, and State of New York, this 19th I day of March, A. D. 1917.

J OSEPH' KLEIDMAN.

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