US1287576A

US1287576A - Motion-picture machine.

Info

Publication number: US1287576A
Application number: US8607316A
Authority: US
Inventors: Herman A De Vry
Original assignee: VRY CORP DE
Current assignee: DE VRY Corp; VRY CORP DE
Priority date: 1916-03-23
Filing date: 1916-03-23
Publication date: 1918-12-10
Anticipated expiration: 1935-12-10

Description

I 4. A. DE vnv.

MOTON'PICTURE MACHINE. APPL ICAHON FILED MAR. 23. I916.

1,287,576. Patented Deb. 10, 1918.

3 SHEETSSHEET I.v

H. A. DE VRY.

MOTION PICTURE MACHINE.

APPLICAHON FILED MAR. 23 I916- Lggfifififi Patented Dec. 10, 1918.

3 SHEETS-SHEET 2.

' a l-n 1 H. A. DE VRY.

MOTION PICTURE MACHINE.

APPLICATION FILED MAR. 23. 1916.

1,287,576. Patented De0.10, 1918.

3 SHEETSSHEET 3- R L R lllllllll 1 k UNITED STATES PATENT OFFICE.

HERMAN A. DE VRY, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE DE VRY CORPORATION,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

MOTION-PICTURE MACHINE.

Specification of Letters Patent.

Application filed March 23, 1916. Serial No, 86,073.

To all whom it may concern Be it known that I, HERMAN A. DE VRY, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and In practice, it has been found that when, in places where an incandescent lamp of very high candle power is necessary, the residual heat in the case raises the temperature in the case to an objectionable degree. The

object of the present invention is to provide an improved machinein which provision is made for'forcibly and efficiently carrying of the heat to render the apparatus safe in operation, particularly when an incandescent lamp of high candle power is employed for projecting the pictures on the film.

A further object of the invention is to provide means for forcibly carrying away heat from the case without additional operating mechanism, and in the attainment of this object, the rotating shutter is utilized to force theair through the objective opening in the case. I

The invention further designs to provide an improved portable projecting apparatus for motion pictures.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings: Figure 1 is a side elevation of a machine embodying the invention the hinged cover being open and one side ofthe lamp box being removed. Fig. 2 is a horizontal section taken on line 22 of Fig. 1. Fig. 3 is a transverse section through the case and lamp box on line 33 of Fig. 1. Fig. 4 is a central vertical section on line 4-4 of Fig. 2. T

The apparatus is inclosed within a rectangular case comprising a bottom 9, a front 10, aback 11, a top 12, a fixed side-wall 14: and a cover 15 hinged tothe back, as at 16,

so that it may be swung open for convenient access to all of the mechanisms and devices in the case. The cover 15 forms one side 0. the case.

Film spools

18 and 19 are mounted side by side in the lower portion of the case. spool 1.8 serving as a supply spool and spool 19 as a take-up for the exposed film.

A film-feeding mechanism is mounted in a frame 17 which is secured to the fixed side 14 of the case. An electric motor A, securedon the back-Wall 11 of the case by posts 11 furnishes the power for driving the filmfeed mechanism. The film-feed mechanism comprises a continuous feed-sprocket 59 and a continuous take-up sprocket 61 both mounted on a shaft 88; an intermittent feedsprocket ;.a shutter-shaft 76; a pinion 92 secured to the shutter-shaft and meshing with a pinion 93 on a shaft 94 which is driven by a belt a and a belt-pulley 98 from the motor A; a gear-train comprising a gear 91 on the shutter shaft and a gear 90 on the continuous feed shaft 88. for driving the continuous feed sprockets; a shaft 80 provided with a belt pulley 85 for driving a belt 86 which operates the take-up spool 19; and a Geneva gear connection between shaft 94 and shaft 99 for intermittently operating the sprocket 60. From the supply spool 18,-

and thence to the take-up spool 19. It will be understood that suitable rollers will be provided for guiding the film and for keeping it in engagement with the feed sprockets, but since the construction of these form no part of the present invention, it is notdeemed necessary to illustrate and describe For a detailed lllustration them in detail, and description of these devices, reference may be had to an application filed by me Aug. 16, 1915, Serial No. 45,633. The mechanism thus far described exemplifies a film supply and take-up and film-feeding mechanism and a motor for operating said mechanism all inclosed within a-case and operatively connected together therein.

Suitable projecting lenses 73 are mounted I Patented Dec. 10, 1918.

in a tube .74 in .alinement with the picture opening 67 and an objective opening 77. A.

shutter '75 comprising a plurality of blades bottom,

is fixed to the front end of shaft 76 and is continuously rotated by said shaft. A plurality of these blades is provided to cut oil the light during the movement of the film and also to prevent flickering. These blades are angled relatively to the plane of rotation so that they will act as a fan to force air through the objective opening 77, aswell as cutting ofi' the passage of light through the fihn for a purpose presently set forth.

The lighting apparatus'comprises an incandescent electric lamp 10 held in a lamp socket ii on a bracket 42 which is fixed to the back wall of the case. A tube d3 for the condensing lenses 4A is mounted in a. partition 24 between the film and the lamp. An electric switch 60 is secured to the back" 11 of the case and is electrically connected to the lamp socket 41 -and the motor A in manner well understood in the art. The lamp 40 is disposed in a box 50 in a compartment 24 formed in the case between partition as and the back wall of the case. Motor A is disposed in the lower portion of said compartment. The inside of this box is usually ainted white and comprises fixed out, back and top walls, all separated from the walls of the inclosing case to form an air passage between the'box walls and the case-walls. This box is supported by bracket 42, and posts 42 The sideof the box adjacent the cover is removable to provide access to the lamp in the box when desired An air inlet to, over which extends screen or guard 4:1 is formed in the sidewall 1 1 of the case to admit air to the compartment 24 below the lamp-box. An air opening 65 is iformed in the top wall of the case above the lamp box, and a screen or guard 65 is secured over this opening.

Openings 54; are formed in the bottom oi the lamp-box for air to pass from the com partment 24 into the lamp box. An opening 55 is formed in the top of the lamp box. The purpose of these openings is to provide a passage for air. p v

Motor A is provided with a fan a disposed adjacent air-inlet 45. This fan will be operated while the machine is in operation and forces air entering compartment 24 at inlet 45, through openings 54 into the lamp-box. This air' passesaround the lamp and forces the heat through openings 55, 65, to the outside of the case. Air is also forced around the outside of the lamp-box to the outlet 65. An opening 56 is formed in the case to admit air to the main compartment of the case containing feed mechanism, and the fan-blades of shutter 7 5 force air through the, objective opening 77. These forced currents of air serve to eificiently keep the case and its contents cool and render safe the operation or the film in close proximity to the lamp contained in the case.

ses me This apparatus exemplifies one in which air isforced through the case containing the lamp to carry ed heat from the lamp and to prevent all of the parts from becoming unduly heated. The inventionalso exemplifies a machine in' which cooling is efiected by the shutter. The invention is particularly advantageous in a portable machine in which it is desired to have the inclosing case as small as possible and in which a lamp of exceptionall high candle power is necessary. J

The operation of the shutter and film feeding mechanism will be as follows: Motor A. will operate the belt a to drive pulley 98 and its shaft 9e continuously. Gear 93 on shaft 94, meshing with gear 92, wil operate the shutter shaft 7 6 continuously. The intermittent driving connection between the pulley 98 and sprocket 60 will serve to operate said sprocket to feed the film intermittently across the exposure opening 67. Gear 91 on the continuously rotating shaft 76 meshing with gear 90 will operate the continuous feed sprocket 59 and the take-up sprocket 61 continuously. Gear 89 meshing with gear 87 on shaft will rotate pulley 85 to operate the belt 86 for operating the.

take-up spool. During the operation of the machine, the fan a and shutter 75 will operate to force air-currents through the case to carry ofi' heat from the lamp.

The invention is not to-be understood as driving means and box, and means for forcing a current of air through and around the outside of said box.

2. in a moving picture machine, the combination of a film supply, film-feed mechanism, means for driving said mechanism, illuminating means, a box around said illuminating means, a portable carrying case containing said supply, feed mechanism,

driving means and box, said case, and box each having inlet and outlet openings therein, and means for forcing a current of air through said openings. I

3. in a moving picture machine, the combination of a film supply, film-feed mecha-. nism, means for driving said mechanism, illuminating means, a box around said illuminating means, a portable carrying case having an air opening mitsitop and conilluminating means,

taining said supply, feed mechanism, driving means and box, and means for forcing a current of air through said box and dis charging it through said opening.

4. In a moving picture machine, the combination of a film supply, film-feed mechanism, means for driving said mechanism, a box around said illuminating means having an air inlet and an outlet, a portable carrying case having an ope g in its top and containing said supply, feed mechanism, driving means and box, and means operated by said driving means for forcing a current of air through and around the outside of said box and discharging it through said top opening.

5. In a moving picture machine, the combination of a film supply, film-feed mechanism, means for driving said mechanism, illuminating means, a rotating shutter operated by said mechanism, a portable carrying case containing said supply, feed mechanism, driving means, illuminating means and shutter, a fan operated by said driving mechanism for forcing a current of air around the lamp and through one portion of the case, said shutter having fan blades adapted to force air through another portion of the case.

6. In a moving picture machine, the combination of a film supply, film-feed mechanism, means for driving said mechanism, illuminating means, a rotating shutter 0perated by said mechanism, a case divided into separate compartments, one or which contains said supply and feed mechanism, means and shutter, the other containing the illuminating means, a fan operated by said driving mechanism for forcing a current of air around the lamp and through one compartment, said shutter having fan blades adapted to force air through the other compartment.

HERMAN A. on VRY.