US1207211A - Film-winding device for motion-picture machines. - Google Patents

Description

N. POWER. FILIVI WINDING DEVICE FOR MOTION PICTURE MACHINES.

Patented Dec. 5,1916.

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NICHOLAS EQWER, OF NEW "ZYQIEK, Ihl. 1Z1, llddSTG-NUR T NICHOLAS LPUWER COMPANY,

GORI'PORATIQN vill IDELAWAIRE.

FILM-WINDING DEVICE 1MB. IMG'TIOJXMEIGTUHJE} MACHINES.

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Specification of Letters Patent.

Patented Dec. 517, 191th.

Application filed June 8, 1914. Serial No. 8el3l,?'39.

To all whom it may concern:

Be it known that l NIcrioLAs Po /won, a citizen of the United states, and a resident of New York, in the county oi Kings and State of New York, have invented certain new and useful Improvements in Film- Winding Devices for Motion-Picture Machines, of which the following is a specification.

This invention relates to filrn reeling mechanism for motion plcture machines and has for its object to provide a mechanism in which the film will be retained'throughout the entire winding operation under a uniform tension unaffected by the increasing diameter of the reel.

A further object of the invention is to provide a device of this class in which the driving mechanism for winding; the reel is controlled by the strip of film, and in which a very slight movement of the film breaks the driving connect-ion and relieving the ten sion on the film.

A further object of the invention is to provide a mechanism of this class which will he of simple and durable construction, and which will afford ample driving power when the driving" connection is in operation,

- hut will be easily released upon the desired tension being exceeded .dne strain on the film.

Without putting on A further object of the invention will appear h'om thefollo'wing description taken in connection with the accompanying drawings, wherein I haveillustrated a preferred embodiment of my invention and two modifications of the same.

till) Figure 1 illustrates inside elevation a moving picture machine equipped with my preferred form of reel driving mechanism,

andv Figs. 2 and show in side elevation and section respectively, of my invention, and

a second modification Figs. 4 and are sirnilar views of the third-modification of the device llteiferringnow to the drawings, particularly Fig. l, 1 indicates the supporting stand ut a moving picture apparatus, which stand preferably comprises a base board 2 from which is suspended the magazine 3 for the iilrn reel i. The reel 4L t, supported at the intersection of the cross hraces 6 of the frame 2. The film feeding friction dish 11 suitable driving surface.

is carried by a shaft the shaft outside of the magazine a disk 10 havlng a wide smooth periphery or tread adapted to he engaged bya corresponding having a raw hide or other The disk 11 is mounted on a shaft 12 carried by a fork on the end of a depending arm 13 pivoted to the vertical cross bar of the frame. Also attached to the shaft 12 is a sprocket wheel 14 driven by a suitable chain from a sprocket 15 attached to one of the revolving shafts of the machine head 7. The friction disks l0 and 11 are held in driving engagement by a suitable spring which l have shown at 16 attached at one end to the arm and at the other end to a suitable car on the magazine wall. .llso connected to the arm 15 extends toward the front of the machine and is provided with a pin or axle 18 projecting through a slot 19 in the wall of the magazine and supporting within the magazine a film guiding spool 20. 1 The end of the spool is of suflicient diameter to cover the slot in all positions of adjustment. The position of the spool is such that it deflects the film from its straight path of movement from the guide rollers 9 to the receiving roll as clear y shown in the dotted lines in Fig. 1. The operation of this mechanism will be obvious from the above description. The normal. speed of the reel shaft is suiiicicnt to wind up the film as fast as it is delivered,

is a link 17 which.

even when the reel is of its smallest diarndish of considerahle width ample driving friction is protogether again. By having the i ce ei vided without necessitating a spring of undesirable-strength. As the driving connection is broken by the slightest movement of the disk 11, the film spool 20 has very little movement and consequently there is not an appreciable amount of slack in the film to be taken up with a jerk es in the tension de vices heretofore constructed. in feet the engagement and disengagement of the drivingdisks follow in'such tepid succession that the effect is the same as e continuous chive of the proper speed to Wind the film under the desired tension.

In Fig. 2 I have shown e modified form of the invention in which the friction die 11% corresponding to the clisk 11 of the pee viously described device is mounted on an arm 22 Whose lower end is provided with e hub or strep encircling an eccentric 23 to tstelolyimounted on the extension 24 of the stationary jonrnai oifitl o reel shaft. The arm 22 is provided Withfpin which Works in e. slot in the magazine Well whereby the aim is held against rotation but is per-- mitted a. slight verticsi m vement to bring the friction disks 1% anti 11' into ancl out of contact.

The eccentric 3 is pi'evitied with an mm 26 extending upwsraily and toward. the front, end pivoteci to the end of the is the link 17 carrying the film guiding spool 20 similar to that employed in the previously described form of device The arm 26 is also providecl with a spring 2'?" tending to move the link and spool against the tension of the film, The operation of this form ofcievice will be obvious from the above description. As the reel takes up the film more repiiy than it is feci into the magazine the tension of the film will shift the spool 20 toward the rear of the machine thereby turning the eccentric 23 and raising the disk 11 out of contact with the ciisk 10 allowing the i eel stop until sufficient slack is provided in the film to permit the spring 27 to tum the so centric in the opposite tlirection aml bring.

the driving disks again into contact.

In the inoziificstion of the clevice iiiustrated in Figs. 4 and. 5 1 employ 121 piece of the friction disks 10 and 11 a friction clutch of the disk type having; ample to provide a smooth driving connection. The friction clisks I have intiicated at 30 and 31. i'espectively end one of the disks is Kirsten ably proviclecl with a leather or other soitable friction face. The disk 30 is loose on the reel shaft 5 and has keved to its hill) driving sprocket 32. A eollai" 33 is attache i to the emi of the shaft emi prevents the clutch disk and sprocket heing forcefi off the shaft. The other clutch disk 31 is attached to the shaft by a pin passing through 22 slot in the to permit a sufiicient slicling movement of the clutch disk to disengage the friction feces. A spiing is moss-teal v s d sk 3? rotnt;

son the dish 3i :iinl the col (l. the ciutch memo titer with sin'licient pressure to pro-mic toge the le is taperat e conical homes 36. "1-

fizmge 3G is El. conical inonnteci on o, stud se hlocic 39 .Jllllll i on the mags The'iiloeli oi lin Sli semen t its soon as ill the no shsi't 5 *1 555 to claim Patent is r- H comm .ng

l, mini means noting 10o clisconnect sails menil i isting of siilm goiili. axle 1nrojecting thsongli esloi; 1e wall oi the magazine snii s iink without the magazine connecteci to ssi i spool. and opeintinp; to (llS- connect seiol member's upon movement of the spool pi'ozinced by the s 1 on the film.

in. moving pit chine em,- hination of s Wind. "foithe film, t magazine inclosin the one for? (iii no ing the CGZL-KDI. ii col innonsiv friction coim the same, ssici as able, a spring for hov 5 its; enssgeinent and means for ting said clislzs against the tension of the s rine comprising lmh: operetivelv ccni'iectml to the movable (lifiii a film guiding spool 136W shly monnteci the side fell at seiil siege 12o zine, sncl conneetei'l to seiti link to shift the link "when the tension on the film i tension of tiiBS} }fl*.

3. in it moving nice-re in hinstion of a. secei g reei for me no closing the Whit i the reel mow the seal mwm. 1

mova ment t m' vard and from said firs; m mtinned disk means for positively driving second disk a spring for holding the peeriplmries of saicl disks in flictianal driV ring engagement, and means cmmrolled the tension 0f the film Within the magazine for radially separating disks.

Signed at New York, in the county of New Y 0171!: and Et'ace of New York, this 26th day of M1213, 1913.

NICHOLAS POWER.

Witnesses FREDK J. 3 3mm, LAWRENCE V1 .ATWATER.

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