US1220195A - Cinematograph apparatus and film for use therewith. - Google Patents

Description

S. COCANARI. CINEMATOGRAPH APPARATUS AND FILM FOR USE THEREWHH. APPLICATION FILED IAR- 5. I914.

1 ,220, 1 95. Patented Mar. 27, 1917.

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S. COCANARI.

CINEMATOGRAPH APPARATUS AND FILM FOR USE THEREWITH. APPLICATION FILED MAR-5.1914.

1,220,195. Patented Mar. 27, 1917.

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[colon-ocean i-QIQQQIIDOIIOII'I' SILVIO COCANARI, OF VIEUX DIEI I,r NEAR ANTWERP, BELGIUM.

CINEMATOGBAIH APPARATUS AND FILM FOR USE THEREWITH.

Specification of Letters Patent.

Patented Mar. 27, 1917.

Application filed March 5, 1914. Serial No. 822,660.

To all whom it may concern:

Be it known that I, SILVIO COOANARI, engineer, a subject of the King of the Belgians, and resident of VieuX Dieu, near Antwerp, Belgium, have invented certain new and useful Improvements in and Connected with Cinematograph Apparatus and Films for Use Therewith, of which the followingv is a specification.

This invention relates to cinematograph apparatus and to films for use therewith.

The object of the present invention is to avoid the wear and tear of films due to the driving effort imparted to them by the driving device while passing through the gate of the cinematograph apparatus and also to the friction set up by the pressing frame and other parts with which they are brought into contact.

According to the present invention a flexible carrier of metal or other suitable material provided with perforations to receive the teeth of the driving device, is adapted to pass through the cinematograph apparatus and to carry the film through with it, the carrier taking the driving effort from the driving device.

The invention further comprises particular forms of carrier, means for supporting the same and for details hereinafter par ticularly described.

In the accompanying drawings:

Figure 1 is a sectional side elevation of I part of a oinematograph apparatus illustrating one mode of applying the invention thereto.

Fig. 2 is a perspective view on a larger scale illustrating one form of support'for the carrier applied to the gate of a cinematograph apparatus.

Fig. 3 is a perspective view of one form of carrier and a portion of film adjacent thereto.

In carrying out the invention according to one mode as illustrated in Figs. 1, 2 and 3 the film carrier comprises two endless metallic or other suitably perforz-tted bands 1, provided with perforations, the pitch of which is equal to that of the perforations in a normal film, that is to say, the bands are adapted to be engaged by the usual driving mechanism of a cinematograph apparatus. The bands 1, are shown as separate bands but they may be united as hereinafter described.

When used in an ordinary film 2, in order to relieve it of wear and tear and thereby to prolong the life of the film, the film 2 is passed througl'i the gate of the cinematograph apparatus passing off one spool on to another in the usual way.

The carrier 1 is mounted on a curved metallic or other suitable support 5, passing over said support and through the gate of the apparatus behind the pressure frame t together with the film 2. The film 2 and the carrier 1 are thus engaged simultaneously with the teeth 3 of the usual sprocket pinion which teeth pass through the perforations in the film and thus into the carrier 1. As the carrier is of metal or other suitable resisting material the carrier takes the stress or driving effort and thereby relieves the film of the direct pressure of the teeth. It is found that the carrier almost entirely avoids the usual friction and direct pressure on the film, although the latter is at the same time not allowed to move freely irrespective of the driving device. Obviously any usual driving device may be used with the carrier whether of the rotary or of the reciprocatory type provided the device has teeth for engagement within the perforations of the carrier. A resulting advantage is that the driving device no longer drives the film by applying an effort upon the lower part only of the perforations in the film, but it applies the greater part of its effort to the material adjacent to the holes or perforations in the metal carrier and the carrier transmits this effort to the film by means of the adherence of the "film with it. In other words the film is safeguarded against all undue pressure, whether from the pressure plate or from rollers generally employed to maintain the film in contact with the driving device.

In order to avoid weakening of the carrier it may be provided with recesses instead of complete perforations corresponding to the teeth of the driving device. The carrier may be of any other suitable material than metal provided it be of sufficient flexibility and durability. The carrier 1, as

before stated passes over the support 5 which is provided with a window 6 to permit of the projection, and the support 5 which is intended to sustain and guide the carrier preferably consists of a rigid curved plate fixed upon the gate of the projector or cinematograph apparatus. It may be easily applied to any usual form of apparatus. Friction between the carrier and its support may be diminished by providing the latter with rollers or other antifriction devices. A carrier such as described may be used with films of normal width thereby conserving the perforations thereof intact and very considerably increasing the life of the films.

What I claim and desire to secure by Letters Patent of the United States is:

1. In a device of the class described, the combination of film feeding means for engaging the perforations of a motion picture film, a film gate including a pressure frame and a pair of perforated endless wear resisting bands guided through the film gate in contact with the pressure frame into position for engagement by the film feeding means. v I

2. In a device of the class described, the combination of film feeding means for engaging the perforations of a motion picture film, a film gate including a pressure frame,

a guide extending away from the film gate, and a pair of perforated endless wear resisting bands movable over the guide through the film gate in contact with the pressure frame into position for engagement by the film feeding means.

3. in a device of the class described, the combination of a toothed feeding wheel for engaging the perforations of a motion picture film, the said wheel being arranged adjacent a projection aperture, a fixed support having an opening in the line of projection through said aperture, and a pair of endless wear resisting bands guided by the lateral, edges of the support into cooperative relation with the film whereby the feeding wheel. engages the perforations of the film and also corresponding perforations in the bands.

in testimony whereof I have hereunto signed my name to this specification.

S. COCANARI.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). U.

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