US1587415A - Motion-picture projecting apparatus - Google Patents

Description

June 1 1926.

- 1,587,415 E. L. V. REBILLON ET AL MOTION PICTURE PROJECTING APPARATUS Filed Oct. 22. 1923 4 Sheets-Sheet 1 Fi .1 1 Fig.2

June 1 1926. 1,587,415

- E. L. V. REBILLON ET AL MOTION PICTURE PROJECTING APPARATUS Filed Oct. 22, 1923 4 Sheets-Sheet 2 June 1 ,19ze, 1,587,415

E. L. V. REBILLON ET AL MOTION PICTURE PROJECTING APPARATUS Filed Oct 22. 1923 4 Sheets-Sheet 5 I NVENTUHS: frnesz [0M1]! VzbzorZeZzY/vw anZfiene /QZ2W/ 7 in M ATTUP NEY Patented June 1, 1926.

FIRNEST LOUIS VICTOR REBILLON.

OF MONTESSON. AND.RENE ADAM. OF PARIS.

FRANCE.

MOTION-PICTURE PBOJECTING APPARATUS.

Application filed October 22, i923, Serial No Up to now, in the majority of motion picture projectors used, the reels, one of which receives the film before its passage into the projector, while the other receives the film 6 after its passage through the said projector,

are arranged in one and the same plane; the film, in coming from the feeding reel, passing directly through the apparatus and being wound on the receiving reel gene-rally arranged below.

This invention relates to a projector in which the feeding and receiving rolls are done away with and replaced by simple cores without sides or flanges, one of which is "arranged against the right hand wall of the casing of the apparatus, and the otherv against the left hand wall of the casing, all

the other parts being enclosed in, the said casing. u

The film coming from the feeding core, forms a natural enlarged loop in order to pass into'the apparatus and to be wound on the receiving core.

This arrangement of the two feeding and receiving cores relatively to the casing containing all the parts of the projector, with the formation of a continuous enlarged loop between the two cores, constitutes one of the characteristic features of the invention.

. As will be seen byexamining the following description, the invention is characterized at the same time by other important points which will be better understood with reference to the accompanying drawings in which v Figure 1 is a side elevation of the apparatus shown in front elevation in Figure 2. L Figure 3 is a-second side elevation showin the opposite side to that in Figure 1.

igure 4 shows the apparatus on an enlarged scale in vertical longitudinal section.

Figure 5 is ,a. vertical cross section tiff-the same.

Finally, Figures 6 and 7 are detail views of the claw holder enabling the filmto be advanced by jerks or intermittently. As will be seen from the drawings, all the active parts of the apparatus other than the receiving and feeding cores and the driving rollers, are enclosed in a casing a which can be mounted by means of any suitable pivoted joint b on a supporting leg c for the purpose of enabling it to assume 670,098, and in France December 30, 1922.

easily and instantaneously any suitable position.

At one of the sides of the casing is the feeding core (2 on which is wound the film before its passage through the apparatus.

It is a simple core of wood or other material, without any flanges or sides, and it is thewall of the casing a that constitutes at one side the side cover or rflange of the core.

At the other side, no flange or side cover is required because of the direction of the pull exercised on the film. Nevertheless, by way of precaution, a finger d holding the film in place could be mounted on the spindle of the core.

At e is arranged a driving roller or drum which, by means of the driving gear described further on, unwinds the filmfrom the feedingcore.

' The film f thereupon forms an upper loop and then descends through the apparatus. It comes out at the bottom portion of the apparatus, and after having formed a bottom loop,-is exposed to the action of a second driving roller or drum e in order to be finally wound on the core a! similar to. the cored and, if necessary, comprising, like the core d, a holding finger d. these conditions, the film tends to take a perfectly natural or normal pathv which moreover it follows owing to its inclination to begome wound upon itself.

All the inner parts of the apparatus, shown in Figures 47, will be now examined in detail: these parts make possible the intermittent movement of the film in the interior of the casing.

At g, in the centre of the casing, is mounted a shaft which can be rotated by hand,

by means of ahandle g, and in such event the said shaft is provided with a fly wheel g for the purpose of regularizmg the movements. of the handle.

' It will be understood that in place of the fly-wheel 9 could be mounted an electric a second shaft 71, the object of which will be seen later on. The shaft 9 is provided at j with a hellcal pinion engaging with a pinion j keyed to the cross shaft 7'. This cross-shaft y'" is provided at each end with a pulley is.

Over each of the said pulleys 70 passes a chain or cable is. winding on a loose pulley is" mounted on a stationary shaft Z.

The p)ulleys is are controlled by pawls carried y the two driving rollers or drums e, e which are also seen in Figures 1 and 3. Owing to the combination of each pulley 7a with its corresponding driving roller, a free wheel device is obtained.

The shaft 9 is moreover" provided at its front portion with another toothed wheel m engaging with a pinion m keyed to the shaft section 1', which section, as already stated, could be extended rearwards for the purpose of being driven by the electric motor if necessary.

The said shaft 2' is provided at o with the rotating shutter enabling the light to be shut off at the moment of moving the film, as in any projection apparatus.

The said shutter is provided with a triangular cam 0' (Figure 6) Wllluh, during the rotation of the shaft z', and therefore of the shutter 0, produces the rising and descending movements of a frame 1).

To the said frame p is secured a spring blade 9 carrying the claws 1'. This blade is bent at the top at 1" in order to receive the action of a boss .9 secured to the shutter 0.

When the bent portion 1" is opposite the highest portion of the boss 8, the claws 1' are pushed to the right (Figure 7) and engage with the holes of the film, thus enabling the film to be driven downwards by the movement of the frame p. 1

On the contrary, when the bent portion 7" is on the less projecting portions of the boss 8, the claws are disengaged from the film, and the frame 3) can be moved without driving the film. v

The lighting can be done by means of an incandescent lamp to mounted in a holder u hinged at 'v to the top of the apparatus, owing to which the lamp can be withdrawn from the apparatus by turning the holder to, so as to examine the said lamp and replace it if necessary.

It will be understood that the apparatus can be worked without any inconvenience in one or in the other direction, the film being moved downwards or upwards at will.

Moreover, the film can be stopped instantaneously at any point of the projection. It will be understood how important this arrangement would befor the use of cinematographs for educational purposes, as the professor could leave the apparatus standing still in order to explain at greater length a view of the film, or turn back the film, if

his lesson requires him to refer again to a view already projected.

In the preceding description, no stress has been laid on certain detail parts which are obvious, such as for instance: the joint Z2 which can be of any desired suitable type,

the brake shoes or blocks w controlled by springs m pressing the film against the driving rollers e e, the object glass y etc.; these are, in fact, arrangements which do not offer any novel features and do not come within the invention.

WVe claim as our invention 1. Motion picture projecting apparatus, comprising a casing; a feeding reel and a receiving reel for the film mounted externally of the casing at opposite sides thereof, each reel consisting of a cylindrical core which is disposed in close proximity to the adjacent side wall of the casing so that such Wall serves as a flange at the inner side of the core to prevent displacement of the film from the core in an inward direction; driving rollers mounted at opposite sides of the casing forengagement with the film; and

mechanism within thecasing for driving said rollers.

2. Motionpicture projecting apparatus, comprising a casing; an objective connected thereto; a feeding reel and a receiving reel for the film mounted externally of the casing at opposite sides thereof; a pair of driving rollers mounted at opposite sides of the casing for engagement with the film and so arranged that the film travels from the feeding reel over the roller on the same side of the casing, then forms an enlarged depending loop, then travels upwardly in a substantially straight line past the inner end of the objective, then forms an enlarged upwardly-directed loop, and then, passes around and beneath the roller on the other side of the casing and travels therefrom to the receiving reel; and mechanism within the jecting end of said shaft for engagement with the film; and a pair of pulleys on said shaft having pawls to engage and rotate said rollers.

In testimony whereof we have signed this specification.

RENE ADAM ERNEST LOUIS VICTOR REBILLON.

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