US1211429A - Machine for treating cinematograph-films. - Google Patents

Description

l w. FRANK. MACHINE FOR TREATING CINEMATOGRAPH FILMS.

APPLICATION FILED MN. 26, l9l6. V I 1,21 1,42. Patented Jan. 9,1917.

2 snsnsquisr w. FRANK. momma FOR mums CiNEMATOGRAPH FILM-S. 7

APPLICATION FILED HUI-26.1916- h Patented Jan. 9,1917.

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" ()FFICE.

WILLIAM FRANK, or sr. LoU1s, MIssonaI.

MACHINE Fox TREATING cmEMyroenArfi-Fmms.

Specification of-Letters l'atent.

Application filed January as, 1916. Serial No. 74,509.

T 0 all whom it may concern:

Be it known that 1, WILLIAM FRANK, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a new and useful Machine for Treating Cinematograph-Films, of which the following is a specification.

This invention relates to a machine for treating cinematograph films, and consists in the novel design, arrangement and combination of parts hereinafter more fully disclosed.

The commercial form of film for cinematograph machines has been found to require a thin coating of parafiin or other similar plastic material at either edge of the film strips on the emulsion side. This coating is required to prevent the injury of the film due to the edges of the film strip becoming engaged with parts of the film feeding mechanism of the machine. Heretofore it has been quite generally the practice to coat the films by. hand, which has been found to be unsatisfactory as it is an expensive method and also results, unless great careis taken, in overrunning the edges of the film too far causing a blurring of the part of the film carrying the picture.

It is the object of the present invention to produce a machine whereby strips of film may be coated at each edge with parafiin or like material, that is to say the object is the provision of a machine toaccomplish the coating of the films mechanically for the purposes above pointed out. w

Additional features and objects attainable from the present invention will be readily appreciated by thoseskilled in the art, without specific mention, from the following detailed description thereof taken in connec tion with the accompanying drawings in which Figure 1 is a side elevation of the machine of the present invention, showing also in conventional form the feeding reel and the receiving reel for the film strip. Fig. 2 is a front end elevation of the machine. Fig. 3 isv a rear end elevation of the machine. Fig. 4 is an enlarged transverse section of a part of the machine taken substantially on the line 4--4 of. Fig. 2. Fig. 5 is a trans verse section on the line 55 of 2 to illustrate further details of construction.

As illustrated in the drawings the machine comprises a frameincluding a base 1, side members 2 and a top member 3. The

Patented J an. 9, 1917.

frame obviously can be erected and held in adjustment in any preferred manner but as illustrated includes transverse tie members 4 and suitably positioned struts or braces 5.

In this frame are mounted the transverse rolls for guiding the strips of film and for maintaining the edges thereof in contact with the suitably positioned paraffin. 'The guiding mechanism includes a duplicate set of presser rolls 6 and 7. The presser rolls arejournaled in the frame of the machine transversely thereof, the upper rolls 6 being rigidly mounted in the frame and the lower rolls 7 being yieldingly mounted in the frame. The yielding support or mounting for each of the, rolls 7 includes a vertically slidable bearing 8 supported upon an expansion spring 9 nested in the frame of the machine, as clearly illustrated in Fig. 1 of the drawing, it being understood-that the rolls 7 are yieldingly mounted at both ends. The tendency of the springs 9 is to press the rolls 7 toward the rigidly supported rolls 6 so as to engage and grip the film. When the film has been fed into the machine between the rolls 6 and 7 and the springs have caused the adjustment of the rolls 7, so as to grip the film, the rolls 7 may be locked or' set in the grippingposition by binding devices comprising wing nuts 10 screwed through the frame in'such a manner as to engage against the edge of the movable bearings 8.

The rolls 6 are provided on their periphery adjacent to the end with flanges 11, the

space between the flanges being the width of the film strip, so that said flanges act as Within the rings 12 thereon which are in alinement with the rings on the rolls 6. The rolls 6 and 7 are arranged in parallel pairs so that when the film strip isbrought to a position between the rings 12 it will be frictionally gripped and held in alinement in its forward movement by the flanges 11 on the upper rolls.

As will be observed from the drawings the film strip is fed from the feed reel 13, between the rolls 6 and 7, passing forward on to a platen roller l l'from which it passes over a receiving reel 15, it being understood that the reel 15 is wound manually or in the .usual manner. The roller 14 is rigidly jourcakes of.

the rolls 6 and 7. The surface of the roll 14 includes outer annular fianges 16 and raised rings 17 the flanges 16 and rings 17 being spaced as are the flanges 11 and the rings 12 on the rolls 6 and 7 Below the roller lt-are mounted in spaced relationship tubes 18 for containing cakes of paraffin 19. The tubes 18 are arranged below each of the rings 17 on the roller 14, so that as the cakes of paraffin are raised in the tubes by the action of expansion springs 20, which carry at their upper ends the disks 21, the top of the cakes 19 will be held yieldingly against the. edges of the film strip. The elevation of the cakes 19' may be controlled by providing the disks 21 with pins 22. which project through vertical slots 23 I formed in one wall of the tubes 18.

At graduated intervals and extending transversely from the slots 23 are notches 24. By turning the pins 22 slightly they may be engaged in desired ones of the notches 2d so as to arrest the upward movement of the.

cakes 19, which is desirable when the film is being adjusted in the machine or when the machine is not in use.

' j ustable wing In order that the tubes 18 may be readily removed for the purpose of replenishing the supply of paraflin, Iprovide adjustable supports for said tubes comprising hinged straps 25 mounted on the tie members 4. Any suitable form of keeper device may be provided for locking the straps in position to hold the tubes in adjustment, the form shown in the drawings comprising bolts 26 which pass through perforations in the ends of the straps and are adapted to receive adnuts 27 I am aware that numerous changes may be made in the design and arrangement of:

. parts without departing from the spirit and scope of the invention. I do not limit myself therefore to exact details, but

What I claim and desire tosecure by Let.

- of the platen, substantially as specified.

raised rings-within the flanges adapted to engage the edge of a film strip, separate containers for plastic bars of lubricating magarages ing witnesses.

terial removably mounted in the frame below said platen and at either side thereof,

so as to present the ends of separate plastic bars to the edge of the film strips below said rings on said platen, a movable support for the plastic bars in each container, a spring in each'of said containers tending to press the movable support upwardly, thereby holding the" ends of the bars of plastic material in yielding contact with the -edges of of the film, and means for arresting the upward movement of said movable supports.

2. A machine for treating cinematograph films comprising a frame, tensioning mechanism including duplicate pairs of rollers. the upper rollers of each pair rigidly mounted in the frame and the lower rollers of each pair movably mounted in the frame, all of said rollers being provided with extending rings adaptedtoen'gage only the edges of thefilm strip, a platen roller mounted in the frame forward of said tensioning mechanism, raised rings on said platen roller adapted to engage the strip, containers .for plastic bars mounted below the respective rings on said platen and adapted to present the upper end of the plastic bars at each side of the strip of film below the points where the film is engaged by said rings, separate means for yieldingly elevating the plastic bars in said containers to maintain them in contact with the longitudinal edges of the film strips, and means for independently controlling the upward yieldingly maintaining separate bars of lubricating material below the edges of the film strip engaged-by the engaging portion In witness whereof I have signed this specification in the presence of two. subscrib- WILLIAM FRANK. Witnesses:

L. C. KINGSLAND,

N. G; Burner.

edge only of the film'

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