US2213613A

US2213613A - Motion picture projector

Info

Publication number: US2213613A
Application number: US166948A
Authority: US
Inventors: Sassoli Mario
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-10-02
Filing date: 1937-10-02
Publication date: 1940-09-03
Anticipated expiration: 1957-09-03

Description

Sept. 3, 1940. M. sAssoLL MOTION PICTUREv PROJECTGR Filed OCT.. 2, 1937 Patentedv Sept. 3, 1940 UNITED STATES PATENT OFFICE This invention relates to a small motion picture projector, particularly intended to serve as a toy for children.

One ofthe objects of the invention is to providea toy cinema which is cheap, safe in operation and durable.

A further object is to provide a new apparatus involving simple motions. l

Another particular object of the invention is to lprovide an apparatus in which a film carries out a slow and steady longitudinal motion and simultaneously a rapid intermittent transverse motion and passes through a fixed non-diaphragmed l light ray.

vide a projector and a lm on which thecharac ters are distributed over` three or more superposed rows of pictures which are projected by transverse motion of the longitudinally running nlm.

Still another object is to provide a projector for a perforated or non-perforated film having half the width of the usual lm, this substandard film, furthermore; requiring a long time for projection and being preferably so short, say, 10 cm., that it can be mailed in an envelope without being rolled. Owing to the small consumption of material and its production from standard lm, such a lm is extraordinarily cheap vBy way of example, one embodiment `of the invention is illustrated in the accompanying drawing, in which Figure 1 is a vertical longitudinal central section of the projector; Fig. 2,. a front view of the nlm carrier; Fig. 3, a section on the line III-i111 of IIiig.` 1; Fig. 4, a detail view; and Fig. 5, a View on an enlarged scale of a piece of standard film subdivided into two standard films, with three rows of pictures 011 the lower lm. `Referring to the drawing, in the casing I a plate 2 is inserted from below which abuts against projections 3 of the casing I and is detachably secured thereto by means Yoi' screws, etc. AThe platel 2 serves for supporting the optical equipment comprising an incandescentlamp 5 disposed in an attachment 4 of the plate and the lenses 6. Below the -plate 2 a space 1 accommodates a dry battery; a transformer, etc.l One pole ofthis source of current is directly connected by the line' 8 to the socket 9 and the other polej Still another object of the invention is to pro.

In the upper space of the casing I the mechanism for moving a film I2 is located, which is preferably inserted from below. The mechanism comprises a supporting yoke I5 which is secured to the wall of the casing by means of the anges 5 I3 and screws I4 and from which a guide plate I6 having a window .Il depends in vertical direction. 0n the plate i6 another plate i8 is vertically displaceably arranged and guided on top by a driving pin I9 and below by a screw 20 both of which 10 members slide in corresponding longitudinal slots of the plate I6. 1

Between the plates I6 and I8 the film I2 moves which is guided on its upper edge by the springs 2I which are attached to the plate l 8 and pass through recesses 22 thereof into the longitudinal slots 23 of the plate I6. The lower edge of the nlm I2 isguided by pins 24 which project from the plate I8 and engage slots in the plate I6. 25 designates an elongated clearance ofthe plate I6 20 located opposite a film feeding means which may consist of a wheel 26 fitted with rubber or teeth. 2'I is an additional lens arranged in the casing I in the axis of the lenses 6 and of the window I l.

The driving pin I9 extends into a recurring 25 groove 29 arranged on the circumference of a wheel 28 and comprising three sections 29a, 29D, 29o of equal length which are superposed in staggered relation and which pass over into each other by means of the oblique connections 29d; 30 'I'he wheel 28 is supported by a shaft 30 disposed in the yoke I5 and driven by a crank having the form of a cover 3| for the casing I and being provided with a handle 32.

'Ihe rotary motionof the shaft 30 is transmit- 3 5 -ted in. a considerably reduced manner by means of a cord drive and an intermediate wheel to a i wheel 33 which projects somewhat from the casof standard size-without being rolled. Its width 45 is half that of standard fllm, and itis provided with threev superposed rows of pictures 35., 36, 31 which are projected also transversely to the lon gitudinal direction. of the film. Under the rows of pictures a broad feeding strip 38 is provided 50 which may be perforated.

means 26 and after the'lamp, 5 has been Switched 55 ,the arrow in Fig.

intermittently into the section 29o to returnagain through 29h to 29a, and so forth. "This causes a corresponding motion of the nlm plate I8 which intermittently moves the nlm guided by it transversely to the longitudinal direction thereof, so that the pictures of the three

superposed rows

35, 36, 31 successively pass in front of the window I1 into the light ray and are projected on an enlarged scale bythe lens 2l onto a screen, not shown. During the transverse motion the nlm I2 is also gradually advanced due to the reduced drive of the nlm feeding means 26, so that the result of the combination of the longitudinal and transverse motions is a zigzag-like motion of the rows of

pictures

35, 35, 31 through the nxed Vlight ray, as indicated by 5. The Wheel 33 partly projecting from the casing I permits adjustment of the film I2 independently 32, in which case two parts slide upon one another in the cord drive.

The plate 3| can be unscrewed from the shaft by being turned back. 'I he -various parts may consist of suitable material, such as wood, metal,

etc.

Wherever considerations of strength, etc. permit, light yet durable artincial resin masses are preferably employed. The driving and control wheel 28 may be unitary or composite construction. `The cord in the reduction gear may consist of spiral wire.

I claim:

`1. A motion picture projector, 4comprising a small casing containing a fixed optical equipment consisting of an electric lamp, a lens arrangement and current supply means, a guide plate, a nlm carrier plate guided on said guide plate and intermittently movable -transversely into several positions, said carrier receiving and yguiding a substandard nlm` adapted to provided with at last three longitudinallysuperposed rows of pictures, a grooved disc arranged in the casingy and be driven by a hand crank and coinprising sections of a groove arranged on its circumference, which correspond to the number of rows of pictures and pass into 4one another, the position and displacement of said groove sections being arranged according to the rows of pictures, said nlm carrier and groove being in driving connection by means 'of a driving pin, a

feeding means disposed on the nlm guide plate for continuously moving` the nlm in longitudinal direction, said feeding means being in reducing driving connection withthe drive of the groovsd disc, the electric lamp, a portion of the lens arrangement', and the current supply means being mounted as a unit on a mount member and the nlml carrier with the guide plateiand the grooved disc being mounted as a unit o a second mount member, said mount members into or removal therefrom.

of the crank drive `3 I ,v

`during said longitudinal movement being/detachably,` connected with the casing for ready insertion` carrier for receiving and guiding a nlm strip of substandard, width'provided with at least three longitudinally superposed rows of pictures and means for moving the nlm in transverse directions relative to the fixed optical equipment to exhibit successively pictures of the superposed rows and simultaneously with such transverse movement moving the nlm longitudinally, the lamp and a portion of the lens -arrangement being mounted as a unit on a mount-member and the nlm carrier and a portion of the operating means therefor being mounted as a unit on a second mount member, said mount members being detachably connected with said casing for ready insertion into and removal therefrom.

3. A motion picture projector, comprising a small casing, a fixed optical equipment consisting of a lamp and a lens arrangement, a nlm' carrier movably arranged relative to the optical equipment for receiving and guiding a nlm strip of substandard width provided with a plurality of longitudinally superposed rows of pictures, means for longitudinally moving the nlm in the carrier and means for simultaneously with and moving the nlm carrier transversely tothe longitudinal direction of the nlm successively into the positions corresponding to the number of rows of pictures relative to the nxed optical equipment, the nlm carrier comprising pins for guiding the lower edge of the nlm and spring members for guid-iA ing the upper edge ofthe nlm.

a nxed optical equipment consisting of -a lamp and a lens arrangement, a nlm carrier for receiving and guiding a nlm strip of substandard width provided with at least three 1ongitudinally superposed `rows of pictures and means for moving the nlm in transverse direc-r tions relative to the nxedfoptical equipment to exhibit successively pictures of the superposed rows `and simultaneously with such transverse movement moving the nlm longitudinally, the means. for moving the nlaments longitudinally including a gear element projecting through the casing for ready manual engagement for adjustment of the nlm.

5. A motion picture projector, comprising a small. casing, a nxed optical equipment consist- "$5 4. A motion picture projector, comprising a p small casing,

ing of a lamp and alens arrangement, a nlm carhandle for manual operation.

Man ro sAssoLr nlm in transverse direc-1