US1079549A - Attachment for moving-picture machines. - Google Patents

Description

. F. H. FRUDE. ATTAGHMENT FOR MOVING PICTURE MACHINES.

APPLIGATION FILED APR. 25, 1912. 1,079,549, Patented Nov. 25, 191.3.

2 SHEETSSHEBT 1.

F. H. FRUDE. ATTACHMENT FOR MOVING PICTURE MACHINES.

APPLIGATION FILED APILZB, 1912 xPatented Nov. 25, 1913.

f 12 15 9 if F m "UNITED ll spliealien filled April 191% Seria H0 1 '0 all /1/0972, it may; co'mie'm:

Be it known the"; I, FRANK citizen of the. United Slates, Chicago, in the county of Com, Illinois, have invented ceglta: .ewand use Joe,

$111 Improvements in. Alf limhmeues Ill lovingicture Machines; and 1. do hereby cleolare the following to he a. hill, clear and exact description of the invention, such will enable others skilled in, the art to which it appertains to make and use the Seine.

My invention relaes "to new and useful improvements in film actuated swilch governors for moving iictui machines, and the object of my iuvezitionis 1'30 o'prove the eonstruction' and incn so he e.ioiei1oy cleviees of the above (tee h "3 character.

A further object of any .uiveuiiien to provide a device of the Character Clesosribetl so constructed that it umv he applied clireotly to the eiufia by .i {if which the take up reel driven and upon which (the lust of llie lihn zioiml ug" i-iOl'OC-li"; ielieyoil, and a Still further object oi? my iuxeuixion is to provide n ans frillCGUlllPll-Slllfiig at the same time nmincain' lzho lilm loop as in the usual construction.

/Vith these and other objects in 'VlGW, my invention will he TllGi ully u ."berl, illus- UHUKl in the aocompm up; 7 a which SllOW a PICfEBllQ-Cl emluuliiuejnl; oi my devise and then specifically ooii'iied. out in ihe claims which are almelierl to and 'fori'u ilpertof this application.

in the drawings, Figure l is a peispeetii'e of my improved device applied to $1, eoni'e tionul type of moving picture meohine. Fig. 2 is a. Lllilglfl 'i ziuulie v'ew showing the switch wirizg of in device and ii: ire. mien to the Wi 'ing of ihe m= is a eentral longitudinal; section v lugs in Which similar .i'eierei Referring more specifically llfll'i'iel'fllS designate corresponding parts i houim l0 designates the M156 up reel Whichis by a belt 11 passed over the pulley ordinarily over a pulley carried by a journalecl iuw; hearing LL- driven by ear l-i of the machine and upon Whit yell the hurt- 3h film arryino spin -./L My invention 113 enlarging "m bore elf the hem 7 13 to receive a hearing :liomning in: which the shaft 16 is A being provided llllfil IBQCllFE'LQ its length With a! film carrying spi'oelaei which S-JCUIQQl against rete- Eion on the shalt in any preferi eil manner. Jeumelefil upon the sleeve is gear 18 which with ihe gear 14-. of the pic ture machine proper zine alr'o journuled upon this and secure?! "to the gear 18 so lgores "(rive therewith is pulley 19 over which the drive belt of the take up reel 10 pass L It will thus be seen that the take u'p'z'eel will. be driven LlllfCCLlYflfOlll the lllfichl iii the ousi'omm'y manner but that ils dz will in no my allies. the

jourimlecl, suiil shill;

move ml; of the film sprocketlY, other than lllLlllLC through pull exerted upon the lili'u by the 'Wllulllil of the film upon the lake up heel It will further be seen that as the film f Wouml upon the take up reel the File in which it fil. will from the meoh ne will eminently increase unless the HICL-VGKDSIUZI the film in some way retarcleil and l hu'i', this ineiease will result in o: shaft; 16., said pawl and ratchet being 3 the; n nornml condition the i rally in engagement with the and 'lheieforo looks he shaft 16 rotation all :1 higher rateof speed ml.- zxl; which the gear 18 and pulley live i'hue u'uiintmningz' the hhn loop.

'o smile lli'llB it will. he seen that should :h'u hie between the sprocket and tie up reel the shaft 16 will cease ro- I lhe pawl running ililly over the ratchet lihe pulley C(lllilllllik to revolve. It will also beheou that should the film luuuh :u', any point between the intermittent nuwomenl; mecl'uuiism and the sprocket 17 Elm a'ihn would he Wound until the broken aimed. the sprocket when lurthor' roand 30 respectively while a wire 51 connects this collar is a sleeve 2 terminating at its outer end in a disk A plurality of spring arms 25 connect this collar and sleeve and are provided ii'itcrmediate their length with weights Qttwhcreby the collar and sleeve together with the weighted spring arms form a centrifugal gm'ernor, the construction being such thatv when the shaft to is rotating the disk 24 is drawn in toward the sprocket 17 while when the shaft is stationary the disk engages against spaced contact brushes 27 and 28 which are carried by the frame of the machine and properly in saluted therefrom.

My present invention consists in the employment of the mechanism above described as a circuit closer for a circuit adapted when closed to cut off the source of power and light from the machine and so stop the same upon the breaking of the film. I have therefore illustrated d agrammatically in Fig. .2 a series of circuits together with their switches by means of which the stopping of the machine and he outlin off of its light may be accomplished by the closing at a circuit through my circuit closer.

Referring more specifically to Fig. 2 of the drawings 29 designates the switch board upon which are mounted the double knife switches 30, 31 and 32, all of which are of the usual or any preferred type with the exception. of the switch 32 which is provided with a spring catch 33 adapted to he actuated to automatically release and open the switch upon the energizing of an electromagnet 34. The feed wires and 36 are connected to the binding posts 3? and 38 of the switch 82. Connected to the binding posts 39 and 40 of the switch 31 are wires 41 and 42 which lead to the motor of the machine which motor, is not shown, and connected. to the binding posts 43 and 4-4: of the switch 30 are wires 45 and to which lead to the arc light, also not shown, by which the pictures are projected. A wire &7 connects the binding post 4C8 of the switch 32 with the binding posts 49 and 50 of the switches 31 the binding post 52 of the switch with the contact brush 2? of my circuit closer, said wire bein connected by branch wires 53 with the binding posts 54 and 55 of the switches 30 and 31 respectively. A wire 56 connects the binding post 48 of the switch 32 with one terminal of the elcctromagnet 3 L while a wire 57 connects the other termi 1 nal. of the electromagnet with the brush contact 28 of my circuit closer.

From the foregoing description the operation of my improved device wil be apparent. Presuming the switches closed and the machine in operation, the switch 32'having been held manually closed until sullic-icnt had been obtained to open my c breaker, the film is drawn from the mu h by the take up reel over the sprocket 17", 1.x;- volving the shaft 16 which is held, against too rapid movement as previously dcscril'ncd by the engagement of the pawl 20' with the ratchet 21. Any breaking of the film tween the intermittent mechanism of the machine and the take up reel will then per mit the shaft 16 to stop thus closing the circuit through my circuit closer and the electromagnet, causing it to open the switch 32 and cut off the current to the motor and light thus preventing further injury to the film.

From the foregoing description it will be apparent that I have provided a simple and effective means for applying a circuit l in closer of the centrifugal governor type to the conventional form of picture machine without necessitating any marked changes in the structure of the machine itself.

it will of course be understood that I do not wish in'any way to limit myself to the specific wiring and arrangement of switches shown and described as my invention relates wholly to the circuit closer and the manner in which it is applied to the picture machine, the circuits and switches being included merely to illustrate the manner of operation of my device.

What I claim is 1. In a device of the. character described, the combination with a projecting apparatus for moving pictures and an actuating means therefor, including an electric circuit, of a take up reel, a driving mechanism for said reel, a rotatable shaft carrying a sprocket over which the film passes to the reel, means coacting between the reel driving mechanism and the shaft for limiting the speed of rotation of the shaft, and means 0 arable by the stopping of the shaftfor brea 'ng the electric circuit.

2. In a device of the character described, the combination with a projecting apparatus for moving pictures and actuating means therefor, including an electric circuit, of a sleeve, 3. gear and pulley rotatable on said sleeve and locked to each other, means for rotating said gear, a take up reel, means operable by said pulley for rotating said reel, a shaft journaled in said sleeve, a sprocket keyed on said shaft over which the film passes on its way to the reel, a ratchet carried by said shaft, a pawl carried by the pulley and engaging with said ratchet to limit the speed of rotation of the shaft, and means operable by the stopping of the shaft for breaking the electric circuit.

3. In a device of the character described,

f the combination with a projecting apparatus i for moving pictures and actuating means therefor, of a shaft, a sprocket on said sha ft energizing the magnet and so over which-the filrn passes, a-takeup reel,

In testimony whereof, I ailix mv,-sign'u ture, in presence of two witnesses.

FRANK H: FRUD'E.

means for actuating said take up reel, means for limiting the speed of rotation of the sprocket shaft irrespective of the pull of the film upon the sprmkeiq, and means operable Witnesses: by the stopping of the shaft to-rencler the GEO. G. WILSON actuating means inoperative. T. J. DYKIJ.

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