US1070699A

US1070699A - Projecting apparatus.

Info

Publication number: US1070699A
Application number: US67357912A
Authority: US
Inventors: Isidor Kitsee
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-01-26
Filing date: 1912-01-26
Publication date: 1913-08-19
Anticipated expiration: 1930-08-19

Description

I. KITSEB.

PBOJBGTING APPARATUS.

APPLIUATION FILED 1111.26, 1912.

Patented Aug. 19, 1913.

ISIDOR KITSEE, 0F PHILADELPHIA, PENNSYLVANIA.

PROJ' ECTING- ,APPARATUS `Specification of Letters Patent.

Patented Aug. 19, 1913.

Application led January 26, 1912. Serial'No. 673,579.

To all whom t may concern:

Be it known that'I, ISIDOR KITSEE, citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in' Projecting Apparatus, of which the following is a specification.

My invention relates to anv improvement exhibiting photographic pictures.

It is unnecessary here to relate all the achievements or experiments made in photography with the aid of colored sc reens commonly called color photography. It is only -necessary to state that all results so far have this disadvantage that the different color-rays are abruptly brought in View of the picture to be taken and abruptly taken therefrom and ra s of other colors abruptly substituted' there or.

With the arrangements of today, the radual rise and fall of the intensity o one color ray and its merging in the succeeding color-ray is impossible and it is the aim of my invention to enable persons versed in the art to so adjust the source of rays that the above disadvantage is entirely eliminated.

My invention also contemplates the eX- hibiting of pictures in a manner so that the advantages formerly gained should also be maintained duringthe time of exhibiting. the same.

For the purpose of illustrating one form my invention may take, I have reference to the accompanying drawing, in which- Figure l is a perspective viewof a projecting machine illustrating lhere the light and film mechanism and Fig. 2 is a diagram of the electrical circuit.

Persons versed in the art of electric science well understand that in the rapid.-

lighting and extinguishing of electric lamps, the glow of the electrodes or filaments still persists-to a certain extent-even after the circuit is broken and when a series of lamps are successively connected to and disconnected from a circuit in rapid succession, the rays of the preceding and cut-out lamp will always commingle with the rays ofthe lamp following, for a short period. As is known to4 those skilled in the art 'of electric lamps, the time interval of after glow that is the time of glow after the current has been reduced or cut off, can be made anything desired, within limits. This for the reason that, in the case of incandescent lam s for example, the filaments may be of di erent sizes or thicknesses, so that they hold their heat for different lengths'of time, and therefore the after for different lengths of time.

I have here shown incandescent lamps as the source of light. In present days', where the art'of metallic filaments is so well developed, such lamps may be used to advantage, but it is obvious that other types may be used. As is self-evident, in the type shown in the drawing, that is, incandescent type,`the globe has to be colored to suit requlrements. p

When, with the arrangement as illustrated, the pictures are projected in, such rapid succession as is required for the purpose of moving pictures, then the advanta e of my invention is most apparent, for t e reason that here the merging of the rays of the different colors, following each other in rapid' succession, will be most' apparentin the resultant effect of the picture. A second advantage of my invention lies in the fact that I project through each picture unit of a certain color value light of the color of such color value derived from a periodically energized# source of light of such color as distinguished from the use of a continuously operating source of light projected through different'color screens in lsuccession.

Coming now to the projecting of photographic pictures in the well known art of moving pictures, which is clearly illustrated in'Figs. 1 and 2, in Fig. l, a is the projection apparatus, havingl a suitable lens b. c', d and e are three sources of light, of which c may be red, al yellow and e blue.

These lights vare here shown of the well known type of Aincandescent lamps, but it is obvious .that here also this type 'may be relaced by any other suitable type. The

Elm with the pictures thereon is here designated as f actuated by sprocket g. This sprocket is adapted t0 be put in motion with vthe aid of the shaft j. On this shaft is positioned the commutator comprising the three conducting segments k', Z and m. All of these segments are in electrical contact with theshaft and against this shaft rests the brushpp. The other parts of the commutator consist of the insulating material 'n'.

The lm has thereon a series of picture units, neighboring picture units being of glow persists 60 different color values; and as each picture unit is presented for exposure a source of light of correspondin color is energized.

The modus opera/n, v1 is as follows :-When' ments is brought lin contact with one of the brushes, thereby connecting one of the lights into the circuit, here shown as an incandescentlamp. It is now supposed that during one revolution of the sprocket wheel three pictures are lbrought successively to view and vit is taken for granted that the commutator- (positioned onV the same shaft) is also making one revolution during one revolution of the sprocket wheel and that thereby successively all of the three segments come in contact with their respective brushesand it is also taken for granted that the first segment closes the circuit including the lamp giving out red rays, the second segment with the lamp giving out lyellow rays and the third segment with the lamp giving out blue rays. If now the sprocket wheel rapidly revolves, the resultant effect will not only be a change from one color to a second color, but also a graduation of this change through the persistence of the glow of one lamp at the time lamp commences to give out light rays of its own color. It is obvious that instead of entirely breaking the lamp circuit, a resistance 'of high value may be thrown in this circuit.- This resistance will reduce the fiovv of current in the circuit to such a minimum that the lamp will only' slightly glow and the degree of this glow can then be regulated i and is in inverse proportion to the value of the resistance. Instead, therefore, of eX- tinguishing lthe light, the intensity of the light may only be reduced.l In the case where the glow of one lamp ersists until or after the beginning of the g ow of the next lamp the color values of the correspondingly presented picture units are correspondingly modified by the picture taking or'camera apparatus.

Having now described my invention, what I4 claim as new and desire tosecure by Letters Patent is 1. The combi/nation with a film compris.

ing a pluralityof picture units, of a .plurality of sources of light lof different colors, means for moving said film with respect to said sources of light, and means for eX- tinguishing and energizing said light sources in'v succession, one light source continuing to produce light an interval of time after the beginning of light deliveryby a succeeding source of light. i 2.' In apparatus of the character described,

ia plurality of electric lights, each producing light .of a-color vdifferent from the colors of the other electric lights, a moving picture that the succeeding film, means for advancing said film, and means operatively related with said film advancing means for controlling said electric lights in a predetermined order.

3. In apparatus of the'character described, a plurality of electric lamps, each producing light of -a color different from the colors produced by the other electric lamps, a moving picture film, and means for venergizing said electric lamps in succession in synchronism with the movement of said film.

4:. In apparatus of the character described, the combination with a moving picture film, of a plurality of stationary electric lights, each adapted to Iproduce light of a color different from the colors produced by the other electric lights, and means for energizing said electric lights in succession in synchronism with the movement of said film.

5. In ap aratus of the character described, a picture film comprising a plurality of picture units, neighboring picture units having different color values, a plurality of sources of light, each source delivering light of a color different from the light delivered by the other sources, means for rendering said sources active in synchronism with the movement of the film, each picture unit of said film being subjected to light of-'a color the same as the color value of said picture unit.

6. In apparatus of the `character described, a moving picture film comprising a plurality of picture units, neighboring picture units having different color values, a plural-ity of electric lights, each delivering light of a color different from the color delivered by the f Vthe light delivered' by the other electric lights, and switching means moving in definite relation with respect to said-film feeding means for energizing said electric lights in succession.

8. In apparatus for projecting moving pictures in substantially natural colors without theuse of moving color screens, the combination with a moving picture fi1in,'ofy a vplurality of stationary sources of light, each source delivering a color of light different from the color lof lightdelivered by the other source, means for moving said iilm, and means'movable in definite relation with said film moving means for rendering said light sources active in succession and in step with the movement of saidl film.

9. In apparatus for projecting moving pictures in substantially natural colors without moving color screens, the combination with a moving. picture film, of means for moving said lilm, a commutator moving in definite relation with respect `to said film moving means, and a plurality of electric lights controlled in succession by said commutator, each electric light delivering lightof a color'different from the color delivered by the other electric lights.

l0. The method of projecting moving pictures in substantially their natural colors,

which consists in rapidly moving a seriesof picture units, neighboring picture units of the series differing from each other in their color values, energizing a plurality of light sources in succession and at a rate corresponding With the rate of movement of the picture umts, each source of light delivering a light of color dilerent from the colors delivered by the other sources of light, and subjecting each picture unit to a light of color corresponding With the color value of that picture unit.

subjecting each picture unit to a lightvof4 color corresponding withv the color value of that picture unit, and causing the light vfrom each source to persist for a predetermined interval of time and to mingle with the light delivered by another source. v

In testimony whereof I atlix my signature in presence of tWo Witnesses.

ISIDOR KITSEE. Witnesses:

MARY C.' SMITH, JN0. Y. KING.