USRE12037E - Kinetoscope - Google Patents

Kinetoscope Download PDF

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Publication number
USRE12037E
USRE12037E US RE12037 E USRE12037 E US RE12037E
Authority
US
United States
Prior art keywords
film
shaft
lens
rest
motion
Prior art date
Application number
Other languages
English (en)
Inventor
Thomas A. Edison
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Publication date

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  • pictures representing objects in motion throughoutan ex't'ended period of time which may ⁇ be utilized to exhibit the sceneinclud ing su'chmoving objects in a perfect and natural manner'b) mean'sof a suitable exhibiting apparatus, .such as that describedI in an application Afiled''simultaneously herewith,l
  • an apparatus forelecting by photography a representation suitable for reproduction of ascene including a moving object or objectsA comprising" a means, such as 'a single camera, 'for lntermittentlyrprojecting at such rapid rateas to result in persistence of visionim- ⁇ ages'of' successive positions of the object or objects-fin motion as observed from a fixed .and single point of view, a'A sensitized tape- 4like lm, and a means for. so moving the film as to cause4 the successive images to be received thereon separately and in single-line -sequence.
  • the movements of the tape-film are intermittent, and it is preferable that the than the periods of movement.
  • Figui-el is a plan view, ⁇ wilh the top of lthe casini.y removed, of a form of apparatus which I vhave found. highly useful for the tak-ingfof the photographs.
  • Fig. 2. vis 'a vertical longitudinal section on line' in Fig. 1.
  • Figs. 3 andfi are enlarged 'views of thestop mechanism ofthe pratns.
  • Fig. 5 is a plan view of the shutter for the photographing apparatus, and Fig.
  • U is a perspective view of a section of the tapeflm with the positive photographs' thereon; Referring to the drawings', 3 indicates the transparent or translucent tapeflm,-w hich before the apparatus isdonating operation is all coiled-on a reel in t-he'sheetmetal box a The film is an empty reel in the caso 2.
  • Film-case 2 is provided with a similar door, but-.the device for moving the door is not illustrated. This arrangement of 4:g5 the sliding door not only holds the film, but iit tightlycloses the casing, thus excluding light and protecting the sensitive lm.
  • the casings or boxes 1 2 are removable, so that they, ⁇ with the .inclosed film, may be .taken bodily from the apparatus.
  • the shaft 6, heretofore referred to, is provided with a detent or stop-wheel, 23, the form of'which is -most clearly shown infFigs. 3 andei.
  • the Wheel 23 is provided with a number of proz 5 -jecting teeth 24, six being shown, which teeth are adapted to strike successively against the face of the cooperating detentori' stopwheel on the shaft 26, which is thearmature-shaft of the motor Vor a shaft ⁇ which is constantlydriven by the motor.
  • the wheel 25 has a corresponding number of notches2'1 "at regular intervals around its periphery.
  • notches are of such size and shapethat the teeth 24' can pass through them, and when the wheels 23 and 25 are rotated in the direction indicated by the arrows each tooth 'in succession will strike the face of wheel 25, n thereby bringing the lilm absolutely to rest at the same moment that an opening in the shutter exposes the film andwill then pass through a notch, allowing the tapealilm to bev ⁇ moved forwardanother step while i ⁇ t"-is eovj-f.
  • a laterally-v projecting tooth 2 is provided adjacent to' each notch.
  • the wlieel' 23 is at rest for ninetenths of the time in'ordento give to the sensitized film as long an exposure as practicable l and is moving forward one-.tenth of the time, and said ⁇ forward .'rnovementisl made to take place thirty or more-times persecond, prefs erablyat least as high as 'fortyfsix times per l 601 Ysecond, although .the ,rapidityof movement or num-ber of times per second maybe regulated as desired to give satisfactory results.- The longer interval of rest of the film insures a good impression of the object vprojected 65,.
  • the shaft 26 or on any suitable shaft driven by the mo- 7o tor is a revolving ldisk 31, vserving as a shut# ter for alternately exposing and covering the Asensitive lilm.
  • This disk which is continu- 'ously revolving, is provided with six or any other suitable number of apertures 32 at regu- 75 lar intervals around it nearthe edge, they being so arranged that vone of 'the apertures passes directly between the camera-lens 33 and the film each time the iilm is brought to rest, the light-rays passing through the open- 8o ing 33' andV falling 'on the film haltway betweeu the reels on which the film is wound.
  • 34 is a device for adjusting the camera-lens toward or from the film
  • 35 is a device-by means of which the operator can focus the camera on the object to be photographed.
  • What I claim is- 1.
  • An apparatus for taking photographs suitable for the exhibition of objects in m0- tion having in combination a camerahaving a single stationary lens; al-singlesensitized 13o tape-film supported on opposite sides of, andlongitudinally -movablewith respect to, the lens, and-having an intermediate section crossing thelens; ⁇ feeding.
  • devices engaging *5 tion having in' combinations cameralhaving :such intermediate section of the 'l m and 'moving the same across the lens ofthe camera at a high rate of speed and with an intermit ⁇ tent motion-g and ay shutter exposing successivef5 sive portions of the lmduring of rest. substantially as set forth.
  • An apparatus for taking photographs l suitable for the exhibition of objects in motion having in combination a camera having [0 a single stationary lens;'a single sensitized tape-film supported on opposite sides of. and

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