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Publication numberUS2051661 A
Publication typeGrant
Publication dateAug 18, 1936
Filing dateOct 29, 1934
Priority dateOct 29, 1934
Publication numberUS 2051661 A, US 2051661A, US-A-2051661, US2051661 A, US2051661A
InventorsCarl M Weber
Original AssigneeCarl M Weber
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Portable projecting and sound reproducing apparatus
US 2051661 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Au 18, 1936. v c. M. WEBER 2,051,661

' PORTABLE PROJECTING AND SOUND REPRODUCIM} APPARATUS Filed Oct. 29, 1934 2 Sheets-Sheet 1 I INVENTOR I Gun /7 L/QQER I 32 5 3 ATTORNEY 1936' c. M. WEBER 2,051,661


7 UNITED STATES PORTABLE momc'rme AND SOUND nnrnonucme APPARATUS Carl M. Weber, Rochester, N. Y. Application October 29, 1934. Serial No. 750,541

2 Claims.

This invention relates to portable moving pic- I ture projectors including soundreproducing equipment and has for its object to divide the equipment in several easily handled small units -for transportation purposes and provide these units with means whereby the units can be quickly and :easily brought together and mechanically and electrically connected at the same time with the aid of combined mechanical and electrical connecting members.

This and other objects of this invention will become more readily apparent from the detailed description thereof which follows, reference being had to the accompanying drawings in which Figure 1 is a detail perspective view of the combined amplifier and loudspeaker in portable form.

Figure 2 is a detail perspective view of the combined projector and sound reproducer in portable form.

Figure 3 is a perspective view of the combined vprojector, sound reproducer with the amplifier mechanically and electrically connected and attached thereto and forming thebase therefor.

Figure 4 is a detail top plan view of the amplifier.

Figure 5 is a bottom plan view of the projector.

Figure 6 is an end elevation 01 the amplifier and projector mounted thereon with portions of .the projector broken away.

In the several figures of the drawings like re!- erence numeralsindicate like parts.

My present invention is especially adapted for small portable sixteen millimeter film projectors provided with a sound reproducer including an amplifier and a loudspeaker. As illustrated in the figures this equipment, in order to make it readily transportable, is divided so as to provide but two carrying cases illustrated in Figures 1 4c and 2. The carrying case illustrated in Figure 1 comprises the loudspeaker unit i and the amplifying unit 2 which are suitably held together so as to be readily transportable by means of the handle 3. w

The carrying case illustrated in Figure 2 contains the projector with the sound reproducing apparatus which are fixedly mounted in the case so as to be readily transportable by means of the handle 5. The mechanism of the projector and sound reproducer is shown in Figure 3 in which one side of the case is swimg open for the adjustment thereof. Afrone end of the outside of the case 4 is provided the clip 6 and at the top of the case is provided asimilar clip I. These clips are adapted to have the brackets 9 and i0 removably mounted thereon for the support of. the film reels II and l2.- The brackets are suitably stored within the case surrounding the loudspeaker I.

To set up the combined film. projecting and ii sound reproducing equipment, the amplifier section 2 is removed from the loudspeaker section and placed on a suitable support to provide a horizontal base for the projection unit case 4. As illustrated in Figures 3, 4 and 6, the amplifier 10 unit, when used as a base, has an elevated platform l3 which is located intermediate the bank of radio tubes l4 on one side and the control panel lion the other side. At one end of the platform It is provided the socket it for the re- 15 ception oi! the plug connection which furnishes the electric power for the complete operation of the projection and sound apparatus and at the opposite end of the platform is provided the socket ii for the reception of the plug connection 20 from the amplifier unit to the loudspeaker. In this way one electrical extension cord leading to the equipment furnishesthe electric current for the complete operation of the equipment and another electrical extension cord leads from the equipment to the loudspeaker to permit its location at the most advantageous point for the audience.

For the mechanical and electrical connection between the amplifier (unit and the combined projection and sound unit, the platform of the amplifying unit is provided with three plugs it, it and 20. Each of these plugs comprises an enlarged base with a cylindrical projection which inthe plug 20 carries three prongs 2!, 22 and 23 and in plugs i8 and i9 carry two prongs 24 and 25.

The plugs are fixedly mounted on the platform and their prongs provide the electrical connection between the socket i6 and the electric motor 26 and projection lamp iocated in the housing 2'! and also between the amplifying mechanism of the amplifying unit and the sound reproducing apparatus of the projector. The three prong plug 20 serves as the electrical connection for the operation of the motor and the projec tion lamp and the two prong plugs l8 and I9 serve as the electrical connection between the sound reproducing mechanism, the amplifier and the loudspeaker. To complete the electrical connections as above described, the plugs are inserted into the corresponding sockets 28, 29 and 30 carried by the base of the projection apparatus. as illustrated in Figures 4 and 5." These sockets are mounted in the base 3| of the projection apparatus and suitable openings in the case surrounding the apparatus permit the insertion of the plugs into the sockets as illustrated in Figure 6. While the electrical connection is made as above pointed out, the mechanical connection between the amplifier unit and the projection ap paratus, which holds the projection apparatus in the proper position on the amplifier unit, is made by the engagement oi. the plugs of the amplifier unit which also form suitable guide posts into the sockets of the projection apparatus and locks these two units together in their proper relative position with the bank of radio tubes on one side of the projection apparatus and the control panel on the other side thereof where the control members are readily operable on the side of the apparatus which can be opened for adjustment as illustrated in Figure 3.

On the control panel are provided suitable switches 32, 32 to turn on and off the electric current for the various electrical devices of the combined apparatus and the control knobs 33, 33 with which the volume of the sound apparatus. is adjusted. A suitable socket 34 is provided for the connection of a microphone or the use of a talking machine to be used in connection with the projection apparatus.

From the foregoing it will be seen that the ar-- rangement and permanent mounting of the variout parts of the combined projection and sound equipment in two carrying cases makes it possible to electrically and mechanically connect and to set up the entire mechanism in a minimum time without any chance of making an error in either the mechanical or electrical connection in the set up. The equipment can of course be dismantled at an equally short time and in addition divided and rearranged into two carrying cases for the ready transportation thereof.

I claim:

1. A portable talking-motion-picture apparatus adapted to be readily transported by hand in the formof two containers and quickly set up for operation as a. single unit, comprising one container having a plurality of female connecting ,1

members and another container having a corresponding number of male connecting members for mechanically connecting and removably supporting said first container in a predetermined for the operation of said mechanism leading to and from said female connecting members, said second container having a removable cover embodying a loud speaker unit located over the male connecting members within the container to cover the male connectors or said second container for carrying purposes and expose the male connectors for the connection and support 01! the first container on the second container. on the removal of the cover and provide a loud speaker unit that may be mounted remotely from the combined first and second container, said second container also enclosing amplifying means and control meanswith electrical connectors leading to and from said male connecting members and electrical connecting members within said mechanical connecting members to connect said electrical connectorsof said first container with the electrical connectors of said second container and provide the unitary control of said combined film projecting, film feeding, sound reproducing and amplifying mechanisms by the control means of said second container while said first container is supported and mechanically connected to said second container in a predetermined position.

2. A portable talking-motion-picture apparatus as set forth in claim 1 with a single electrical connecting member provided on said second container and electrically connected to said electrical connecting members to provide a single source of electricity for the operation of the mechanism in both of said containers.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2575579 *Sep 15, 1948Nov 20, 1951Technical Service IncMoving-picture sound projector
US3029684 *Apr 20, 1959Apr 17, 1962Florence Kane S KaneCamera-projector apparatus
DE743623C *Mar 9, 1941Jun 10, 1944Zeiss Ikon AgTransportable Tonfilm-Wiedergabeeinrichtung
DE1078870B *Jun 20, 1956Mar 31, 1960Philips NvFilmprojektor, insbesondere fuer Schmalfilm, der in einem geschlossenen Gehaeuse mit Deckel untergebracht ist
U.S. Classification352/34
International ClassificationG03B21/30, G03B31/00
Cooperative ClassificationG03B31/00, G03B21/30
European ClassificationG03B21/30, G03B31/00