US569875A - Chronophotogbaphio apparatus - Google Patents

Description

GBRONOPHGTQGRAPHIG APPARATUS'. No. 569,875.

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M. J. H. JOLY',

V GHRUNOPHOTOGRAPHIG APPARATUS. y No. 9,875. Patented Oct. 20, 1896.

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M. J. H. JOLY. v

A v GHRONO'PHOTOGRAPHIG APPARATUS. No. 569,875. Patented-Oct. 20, 1896.

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MARIE JOSEPH HENRI JOLY, OF PARIS, FRANCE.

CHRONOPHOTOGRAPHIC APPARATUS.

SPECIFICATION forming part of Letters Patent No. 569,875, dated October 20, 1896. Application tiled June 5, 1896. Serial No. 594,437. (No model.) Patented in France August 26, 1895,1i'o. 249,875.

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Beit known that l, MARIE Josnrn HENRI JOLY, a citizen of the Republic of France, and a resident of Paris, (Seine,) in said Republic, have invented certain new and useful Improvements in Chronophotographic Apparatus, (for which a patent has been secured in France, No. il, dated August 26, 1895,) of which the following is a full, clear, and exact description.

This invention relates to a chronophotographic apparatus whereby a large number of photographs, each very clear, may be taken within a given time. It may serve also as a kinetoscope.

ln the accompanying drawings, which form part of this specification, by way of illustrating the invention, an apparatus constructed in accordance with the said. invention is represented.

Figure l is a vertical section of such apparatus; Fig. 2, a front elevation of the same, and Figs. 3 and -l detail views of the means for producing` the arrest of the film at the moment desired.

The apparatus consists of a wooden box, in thc interior of which are two metallic frames that supportthe working parts to be described.

The control of the apparatus is obtained by the aid of a crank A, connected with the wheel B. This latter operates a pinion D, keyed on the shaft E, through a chain C. A roller D' enables the chain to be stretched at will. The shaft E carries a pinion F, which operates the wheel G through the intermediates Gr' G". On the shaft of the wheel G is mounted a roller I-I, provided with two circles of teeth on its periphery, these teeth engaging holes formed along the whole length of the film-band I. A pressure-roller H holds the ilm against the roller l-I, which insures its engagement. A spring acts upon the arm which supports the axle of roller H. lVhen the roller Il turns, it carries along the iilm, which is wound upon the spoolJ. After leaving the roller H the film passes between two rollers K K", which hold it in the desired position. The film then descends vertically and enters the dark chamber L. At its exit from the dark chamber it passes over the roller M and through the interior of the fram e N, which is supported by rocking arms N'.

From the frame N the film passes between the two rollers O and O', over the toothed roller P, over the roller Q, and is finally wound upon the spool R.

The shaft E carries a pinion S, which, through the intermediate S', drives the wheel T, tast on the shaft of the roller P. The movement is given to the spool R by a spring in the barrel U. This barrel is for this purpose provided with a wheel U', which drives the shaft of the spool R through the pinion U".

To explain the operation ofthe apparatus, it will be supposed that the film has been introd uced into its workin gposition, and the operation will be described as it would then take place. The shaft E being moved, the roller H turns and unrolls the iilm from the spool J. lVhen the photograph has been taken, the crank-disk V acts upon the frame N thro-ugh the connecting-rod X, moving it about the axis of oscillation N of the arms N' and torcing it to approach the front of the apparat-us. The iilm, which is caught in the frame N, is carried along, and since its lower part is held by tho teeth of the roller P it cannot be drawn bach, and the portion which has been printed will be obliged to pass out of the dark chamber, being replaced therein by a new and unexposed portion of the film. The shaft E continuing to turn, the frame N returns rearward, and the loop which it formed in ad- Vancing being no longer held can be taken up by the roller P. The roller H for its part will have unrolled from the spool J a length of film corresponding with that which has been wound below on the spool R.

Before commencing the operation, at the moment when the iilm is introduced into the apparatus a loop is formed by hand between the roller H and thc rollers K K', and as the same length is wound upon the spool R as is unrolled from the spool J this loop will maintain itself during the whole time the apparatus operates. lt hence result-s that as the roller P does not pull upon a tight film the latter is not liable to be torn apart.

At the beginning of the operation the spring in the barrel U is about half-wound. In order that the tension of this spring may be maintained, (for this it is which produces the rotation of the spool R,) a wheel is placed IOC) - on the axle ,of .they yroller P, and' .this wheel drives the pinion Y" through the chain-Yi. f On `the yaxieof pinion Yiisanother pinion Z., f which. meshes ywith the wheel Z,Lv `Whenaby theV spring is wound;k Tli'ns during the working of the apparatus ,the'tensi'on of' thisnspring is zo sint in which werks ampin enzathe end ofthet f varices todraw down theiihnn-vhichahas been' :exposed ythe barky also advances, and the le f ver j' is rocked on its inlcrnmy and withd 'raws the leaf :c :,f romr the plateY against which it f kept constant.y f. v l Y The shutter dismounted in a shaftrh,VVV K whichcarries afwornmvheelc, 4jhat isengaged by the .endiess screw d :on the shaftVV E. y

Vin rorder that thetiim maybeeasilyrnoved' at the timeof its entrance into the dark .arranged La little abo bar h, that is Vfastened Vto the strap of the' ec,VF

y f centric This reeeentricils fast on the shaftr EL At thekv moment.when the' frame v N f ad has clampedthe film. rlhisplateis provided with a` velvet band, Whichrprevents the lm r being injured by.rubbing.. Thispiate j* is refy movable, as shown in Fig. Y3,;{so that the vele' yvetimnd canreadiiy be'repiaeedawhen it is y. Y wernorwhen it becomes' clogged with powder. t During all thetirne the frameNisadvanc-y Ving; tovmrdl V.the front -part of. the apparatus ythe leaf c remains withdrawn from theplate i j, and nothing, therefore, opposes the free movement of the film. As soon as the frame N is at the end of its course the eccentric brings forward again the lever f and causes the leaf e to bear against the plate j, and the film is stopped.

It will thus be seen that if the ilm tended to continue its downward movement it would be arrested by the leaf e, and besides the pressure of the leaf against the plate 7' permits the roller P to keep the film stretched constantly in the dark chamber.

\Vhen the film is at rest, one of the openings in the shutter comes between the dark chamber and the objective. The film then is printed or exposed at the moment in which it is at rest. A diaphragm of variable opening` is placed in the dark chamber. In small apparatus the roller H may, if desired, be suppressed. Thelm would then be un wound by the action of the frame N.

Vhen the apparatus is to serve as a kinetoscope, the back of the dark chamber is replaced by a translucent plate, the film is unrolled, as before explained, and by placinga suiijcient source of light provided with a reflector or condenserbehind the apparatus the asthe-frame. i y y y l y Ielaimlas myinfrention or discovery i f l. 'In' an apparatus f of the kind described ,Seems image which may vbeen Vthe' yfilm canv be re-x ceived onV the screen. This image cannot he projected except when the im'is atrest, for,

spool, sincey vthere is constantly f acertain foneof the openingsin the shutter isin front i oft the'dark yf'chzunber andpermits the llumif' neus rays topass throughthe obj eei'ive. Vreason of the system of ksnpporting and shift-rk ngthelmfthis maybe ofvery greatv length an d: consequently off ak consideraber weight.y Y' Y 'lhewframe N, which fpro'dneles the V'shiftingof the him, does not have tofact directly on .thel

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iengthV of lin enrolledr yinadvance. `This framethen is not/retiniredntorproduce yitself' the rotation ofthe spool.VK `linz certain eases a single toothed Wheel mightsuice, provided yit VKisnt sufficiently large diameter. The two spools 'being-then placed onlthe same side of the apparatus, thcfroiieiteeth 'ma'y'prodnce on yoneV hand the -unwindin'g and' on the rother :i f

theV rewinding :of the iiims y lTheframeN can ."(fwithont.departing `frcmlthe .inventionibe y y replacedV by an eccent'iief'froller' "which will 'f communicate to theiihnthe same-movement j wherein a him ha, ingfperforations atreguiar 'i intervals* `therein" is employed, :two y:toothe'd rollers, the teeth thereon `engaging*perfora- 5 tions'inithe iil'rn,fone fornnroliingfand the f rother forfrewinding the .fiim-,fme ansferri i -f f rtating thefrollers at a'iiniform continuous i *movernenhfmeans Vfor;jfeifming aV loop in they f Y lm'inadvance of the -d'arkfchambeig anda frame reciprocating at right angles to the normal line of feed and acting to periodically form a loop in the lilm after it leaves the dark chamber, whereby the film is passed through said chamber by an intermittent movement, substantially as described.

2. In an apparatus of the kind described, means for unrolling and means for rewinding the lm at a uniform continuous movement, means for forming a loop in the iilm in advance of the dark chamber, and a frame reciprocating at right angles to the normal line of feed of the film and acting to periodically form a loop therein after it leaves the dark chamber, whereby the film is passed through said chamber by an intermittent movement, and a clamp or gripping device located immediately in advance of the dark chamber and actuated to hold the film during intervals of exposure, substantially as described.

In testimony whereof I have signed this specification in the presence of two subscribing Witnesses.

MARIE JOSEPH HENRI JOLY.

Witnesses:

CLYDE SHROPSHIRE, EDWARD BARBARY.

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