USRE17876E - owens - Google Patents

Description

Nov. 18, 1930. F. H. OWENS Re. 17,876

TALKING PICTURE APPARATUS Original Filed June 13, 1927 INVENTO'R FREEMAN H. OWENS.

ATTORNEY Reiasued Nov. 18, 1930 FREEMAN H. OWENS,

or NEW YORK, NfY.

' TALKING-PICTURE APPARATUS Original No. 1,735,335, dated November 12, 1929, Serial No. 198,647, filed dune 13, 1927.

Application for reissue filed December 4, 1929. Serial No. 411,703.

My invention relates broadly to talking picture projecting systems and more particularly to film control mechanism for talking picture projecting machines.

One of the objects of my invention is to provide a talkin picture projection apparatus in which a film having a sound record recorded thereon is moved over a transparent sprocket mechanism for controlling the 1ntensity of light from a light source ad acent the film in accordance with the record on the film and the effect thereof upon a light sensitive element.

Another object of my invention is to pro- -16 vide a film mechanism for talking picture projection machines wherein a film having a sound record recorded thereon is passed over a transparent guiding surface and light rays directed through the film and upon a light sensitive cell on the opposite side of the transparent surface for controlling an electrical circuit and a sound reproducing system in accordance with the record on the film.

Another object of'my inventioni's to pro.- vide means for pressing a film into continuous engagement with a transparent cylindrical surface while subjecting the filnr to a light slit for affecting the condition of a light sensitive cell adjacent the transparent cylindrical surface and correspondingly controlling sound reproduction in accordance with the sound record on the film.

Still another object of .my invention is to provide a film mechanism for talking picture apparatus, wherein a light sensitive element is arran ed on one side of a transparent cylindrical rive sprocket and a light source 1s arranged on the opposite side of the sprocket, and light rays directed through the sprocket upon the light sensitive element and varied in accordance with a sound record on a film which is passed over the sprocket and pressed into-engagement with the surface thereof.

Still another object of mylinvention is to provide an elongated light slit and a movable framing member for limiting a narrow beam of light to a selected portion of the slit, so that any one of a plurality of sound records on a film may be selectively reproduced. The objects and advantages of my invenpermitting tion will be more fully understood from the specification hereinafter following, and by reference to the accompanying drawing, in

which:

Figure 1 diagraml'natically illustrates the arrangement of the several parts of the apparatus of my invention; Fig. 2 is a crosssectional View taken through the glass sprocket and film guide on line 22 of Fig. 1; and, Fig. 3 is a plan View of the film guide mechanism and movable framing member employed in the apparatus of my invention.

Referring to the drawings in detail,I provide a pair of sprocket members 1 and 2, each including an inwardly extending shoulder 1 and 2, respectively. The sprocket members are carried by shafts 1 and 2* Suitably journaled for effecting rotation of the assembled sprockets, Sprocket teeth 1 and 2 are provided onthe peripheries of the sprockets 1 and 2 for driving the film 4 over the surface of the cylindrical member 3, which is supported between the shoulders 1 and 2 on sprocket members 1 and 2. The film 4 is driven by means of sprockets 5 and 6., suflicient slack being imparted to the film to enable the film to be uniformly moved over the transparent surface The film 4 includes a plurality of independent rows of sound records represented in Fig. 3 at 7, 8, 9, 10, 11,12 and 13. The film is pressed uniformlyagainst the surface of the cylindrical member 3 by means of fingers 14 and 15 whichare integrally connected with the slit holder 16. The slit holder 16 is long. and narrow, extending the entire width of the film 4t, and mounted in the slit holder I provide a tapered glass slit 17 which has its narrow end resting in engagement with the film 4. The slit holder 16'is slotted at opposite ends thereof to enable a slidable framing member 19 to be passed therethrough and moved to selected positions. member 19 has a light aperture 20 therein, light to be passed in a narrow beam through the light slit 17 from the light source 23 at any selected position across the T he framing y from the light source 23 for directing the strip 19 and aperture rays through the glass slit 17 upon the film 4 as determined by the position of the framing 20.

In Fig. 3 I have shownthe framing strip 19 located in such position that aperturev 2.0. is immediately over the sound record which is aligned in row No. 8 enabling light to be passed through the glass slit 17 and through the sound record 8 and transparent sprocket 3 upon the light sensitive, element 26 which is arranged in the housing 25. I have illustrated a photoelectric cell at 26 which may be connected in the inputcircuit of an amplifier system for controlling a sound :reproducer in accordance with the sound recordon the fi1m4.

Any selected recordon the film may be readily reproduced by sliding the framing strip 19 to. a selected position. The pad having fingers 14 and 15 serves to uniformly press the film into contact engagement with the transparent sprocket 3 for reproduction of the desired record upon the film.

While I have described my invention in certain preferred embodiments, I desire'that it be understood that modifications may be made and that no limitations ventionare intended other than are imposed by the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent of the United States is as as follows 1. A, sound reproducing system comprising means for moving a film having a sound record thereon, a cylindrical member of transparent material, means for guld ng said film over said cylindrical member, a li ht source arranged on one side of said cylin rical member, a light sensitive cell ppsitioned on the opposite side of said cyl ndrical memher, a light slit disposed between sa d light source and said film, means ad]acent sa1d light slit for guiding said film against the surface of said cylindrical member,means for concentrating the rays from said light source through said slit and said cylindrical member upon said light sensitive cell.

2. Ina system for directing light rays upon a photoelectric cell, a cylindrical member of transparent material, means for guid- I ing a film over said-cylindrical member, a source oflight disposed adjacent one side of said cylindrical member, a light slit positioned between said source and said cylindri- "cal member, means adjacent said light slit for pressing said film into engagement with the surface of said cylindrical member, means for concentrating rays of light from said source upon said slit, and a photoelectric cell disposed adjacent the opposlte side of said cylindrical member v for receiving; light rays from said light source varied minlight source,

tensity in accordance With a sound record on said film.

3. Ina second reproducing system a film having a sound record thereon, means 'for moving said film, a pair of sprocket members for engaging opposite sides of said film, a cylindrical member of transparent material disposed between said sprocket members, means brid ing said sprocket members for pressing sai surface. of said cylindrical member, a slit carried by said means, a light source disposed adjacent said slit, a framlno member slidable laterally of said film for seIectively exposing any selected portion of said film to light rays from said source, and a light sensitive cell disposed on the opposite side ofsaid cylindrical member for receiving light rays through said slit and said on saidfilm,

4., In a soundreproducingsystem a film having-a soundrecord thereon, means for driving said film, a-transparent cylindrical member, said transparent cylindrical member, a source of-light, a taperedlight slit engaging said film at its tapered end disposed between said sourceand said film, atmember mounted between said source and said slit and adjustable laterally of said film for selectively exposing any selected portion of said film to light rays, anda li ht sensitive cell positioned on the opposite side of said transparent cylindrical member for receiving rays of light from said source varied in accordance with the record on said film.

5. In a sound reproducing apparatus mechanism for moving a film having a sound record thereon, parent material, a light source disposed on one side of said'cylindrical member and a li ht sensitive cell disposed on the opposite si e of said cylindricalmember, means for guiding saidfilm against the, surface of said cylindrical member on the side adjacent said and a light slit carried by said means and a framing member movable with respect to said slit for selectivel exposing a selected portion of said film to t e rays from said source, said light slit being in engagement with said film surface; 3 1

6.- In a sound reproducing apparatus mechanism formovin-g a film having avsound record thereon, a'cylindrical member of transparent material, a light source disposed on one side of said cylindrical member, and a lightsensitive oelldisposed on the opposite side ofsaidcylindrical member, means for guiding said film against the surface of'said film into engagement with the meansv for guiding said filmover 7 acylindrical memberof trans- H on the side adjacent said ing a l'tght slit therein extending the width of said 1m, and a framing member shiftable to selected positions over said light slit for exposing selected portions of said film to the member, a light sensitive cell disposed on the opposite side of said cylindrical member, means for pressing said film into contact with the surface of said cylindrical member, said means comprising a pair of fingers engaging opposite edges of the film, a carrier or a li ht slit disposed between said fingers, and a raming member slidably mounted in said carrier for selectively exposing a portion of said film to the light rays from said light source for variably controlling said light sensitive cell in accordance with the record on said film.

8. In a sound reproducing system film mechanism for moving a film having a sound record thereon, a pair of rotatable sprocket members, a transparent cylindrical member mounted between said sprocket members and rotatable therewith, a pair of parallel finger members arranged to engage opposite edges of said film for pressing the film into engagement with said transparent cylindrical member, a tapered carrier disposed between said finger members, a glass slit positioned in said tapered carrier and having the edges thereof engaging the surface of said film, a light source disposed adjacent said slit for directing light rays thereon, a light sensitive cell positioned on the opposite side of said cylindrical member, and a framing member having a light aperture therein for subjecting said light sensitive cell to light rays from said source under control of the sound record on said film.

9. Sound reproducing means comprising a light source, means for moving a film bearing a multiplicity of sound records arranged side by side longitudinally of said film, a slit extendin laterally of said film the width of all of sai sound records, a movable mask between said light source and film and provided with an opening to permit the passage of light to any selected one only of said sound records through said slit, and a light sensitive element for receiving the modulated light passin through said slit.

10. ound reproducing means comprising a light source 01E constant intensity a transparent sprocket for moving a film bearing a multiplicity of sound records in parallel relation longitudinally of said film, an optical slit extending laterally of saidfilm the width of all of said sound records, a movable mask between said light source and film and provided with an opening to permit the passage of light to an selected one of said sound records throng said slit, and a photoelectric cell for receiving the modulated light from said slit.

11. Sound reproducing means comprising a light source, a multiplicity of sound records arranged side by side longitudinally on a film, meansfor moving said film, a light slitextending laterally of said film the width of all of said sound records, means for restricting the passage of light from said source through said slit to a selected one only of said sound records and a light sensitive device arranged to receive light modulated by the selected sound record. I

Signed at New York, in the county of New York and State of New York this 29th day of November, A. D. 1929.

FREEMAN H. OWENS.

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