US1144694A - Regulator for film-machines. - Google Patents

Description

M. G. DELA'NEYP I REGULATOR FOR FILMWMAC'HINES.

APPLICATION FILED SEPT. 22, 1913.

1,1%4,69% Patented June 29, 1915.

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REGULATOR FOR FILM MACHINES.

APPLICATION FILED SEPT.22, 1913.

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album. a. planner, or nnrnor'r, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS,

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Specification of Letters Patent.

REGULATOR FOB FILM-MACHINES.

Patented June 2a, 1915.

. Application filed September 22, 1913; Serial No. 791,157.

To il may concern: I

. Be it known that I, MICHAEL G. DELANEY,

. a citizen ofthe United States of America, residing at Detroit, in the county of Wayne f and State of -Michigan,'have invented cerfiiiin-new and ,usefullmprovements in Regutors for Film-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

In the operation of machines for project- I ingpictures from films such as areincommen use for moving picture exhibits, .it is desirable, in order that a clear projection of the picture maybe made that the filmbe held in fixed relation to .the lanternvlens. This is provided for in amanner-by passing the film. wound from the real or container over suitable guiding mechanism but if the container from which the film is drawn is retarded, the film is likely to be injured by the undue strain. I

This invention relates to regulatingmeans whereby an even tension is maintained in the film as it passes from the magazine or container through the, projecting machine, receiving roll or other container whereby strain on the film as it crosses the lantern or slide opening is prevented.

The invention consists in the matters here inafter set forth and more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a view in front elevation of one/form of magazine or reel holder fitted with a device that embodies features of the invention; F i 2 is a view in rear elevation, showing eictrical connections in diagram of a clutch circuit of the magazine or container; Fig. 3 is a view, partially in section and partially in side elevation, of the magazine or container, a projecting machine and the governing means, and Fig. 4.- is a View in 'etail of an independent motor drive.

Referring to the drawings, a reel 1 of any preferred type, that is herein shown as adapted to deliver from the interior turns of a coiled film 2, is so mounted in a suitable casing 3 that the film is drawn therefrom.

shown at 5 in the casing through a prowhereby the film which has the usual apertures 9 for positively engaging the spur wheels, is passed through guide members in dicated at 10 which maintain it in the proper relation to a lantern or other-like illuminating and projecting device (not shown). The mechanism may be operated manually as herein indicated through the medium of a crank handle 11. In the normal condition of the apparatus and its normal operation, rotation of the crank handle draws the film from the reel or container 1 downwardly through the guides and guide rolls, the reel 1" delivering the ribbon as needed. If for any reason, the filID'lS frictionally retarded, a controlling roller 12 that is normally held by a tension spring 13 against the film is moved backward by the strain on the filmas the latter tightens so that a stem 14 of a yoke on which the roll .12 is mounted, moves a connecting bridge piece 15 or the like between a pair of spring fingers 16 or. other terminals. The latter are in series through a suitable electric circuit indicated diagrammatically at 17 with an electric battery or other generator therein. The electric circuit also ncludes the field coils 18 of a magnetically thrown clutch.

as by a chain 25, beveled gear train 26 and sprocket and chain connections 27 with the shaft turned by the crank handle 11 so that when the clutch is thrown in the reel 1 revolves in positive relation to the projecting mechanism and, thereby relieves the strain on the film. When the film slackens, the connecting bridge 15 'is moved out by the spring 13, and the clutch thereby released.

In Fig. {1, the clutch 22 with the tension roller 12, terminals 15 and 16, and bridge piece 14, is shown as operating to couple a carrier shaft 28 to a motor 29 that is mounted on a bracket 30 or other convenient support whereby the carrier is rotated independently of the film projecting machine, whenever the film becomes too taut.

As a result of this construction any retardation of the film above the normal as it passes out of the magazine or container,

shifts the governing roll and thereby closes the electric circuit This automatically throws the clutch into engagement and causes positive rotation of the film reel or containing magazine and the reel projecting mechanism on which vthe film "is being wound. This prevents anyundue strain of and injury to the film. The device does not add materially to the complexity of mechanism and is afi'ective to produce the desired result.

Obviously, changes in the details of con struction may be made without departing from the spirit of my invention and I do not care to limit myself to any particular form or arrangement of parts. r

, What I claim is 1. The combination with a film holder and a projecting machine adapted to draw a film therefrom, of normally disconnectedv mechanism for positively discharging a film from the holder, and means adapted to be controlled by a film passing to the machine for connecting the mechanism when the tension of the film is abnormal. I

2; The combination with a film holder and a projecting machine, adapted to draw a pic ture. film from the holder, of means for rotating the holder, and means for connecting the rotating'means to the holder controlled by the tension of a film passing from the Holder. v f. a

'3. The combination with a film holder, and uiding mechanism for a filmpassing thererom, and means for passinga film through the guiding means from the holder, of means for positively turning the holder, means for the holder, and torfelease'tlie holder to turn" independently Jyvhen'the film is under nor earlian o I w 5'." The combinatlon with a film magazine,

'casin by the machine.

for yieldin 1y. .pr i f 8 of a film projecting machine, adapted to draw a film therefrom, means for regulating the delivery of the film from the magazine that is normally inert,- and means controlled by the tension of a film passing from the magazine to the machine for throwing the regulating means into operation.

6. The combination with a casing, a film carrier rotatably mounted therein, mechanism for positively turning the carrier, a projecting machine adapted to draw afilm from the carrier through an outlet in the casing, and meansfor coupling the driving mechanismof the carrier with the operating mechanism of the machine, controlled by a film passing over the figuiding means.

7; A regulator for m machines, compris ing a casing, mechanism for positively turning a film carrier in the casing,a projecting machine. for positively drawing a film'from trolled b'y'such film and arranged to connect the projecting machine and turning means to move together.

' 8. A regulator for a film-machine comprising a casing, arotatable shaft on the casing for receiving a .the casing, and means adapted to be con-.

a ri carrier, means for rotating the shaft, a clutch for coupling the rotating means to the shaft, a projecting ma chine adapted todraw a film from the casing, and clutch controlling means overned by the' tension of the film drawn om-the e combination with a casing having an outlet opening, a film carrier shaft rotatable therein, a carrier mounted on the shaft, a projecting machine adapted todraw a film from the outlet opening, a regulator moving transversely to the path of a film drawn from the outlet, a clutch controlled by the regulator and adapted to en age the shaft of a film, and shaft rotatin means adapted to be coupled to the shaft y the clutch.

10. The combinatiomof a film carrier, a plrojecting machine adapted to draw a film 0111 the holder, and mechanism for positively operating the carrier that is normally disconnected fromthe projecting machine, of a jspring projected regulating member adapted to "bear against a film passing through the machine, and a clutch for enwhen the regulator is moved y the "tension gaging the carrier operating mechanism with the machine "that is thrown in by the? regu predetermined'point. I

'11; Inafilm winding machine. a casing later when the film moves the regulator to a having a delivery outlet, a shaft rotatable therein, a'film reel adapted to be secured to the shaft, a regulatin roll, tension means I the roll against a film drawn roinft he on t, a projecting ma chine for f-guiding'a film from the outlet, mechanism 1 for positivelyturning the guid ing nieansya clutch adapted to couple the turning means to the casing shaft, electri- In testimony whereof I afiix my signature cally energized means for throwing; the in presence of two witnesses.

clutch in including an electric circuit, and MICHAEL G. DELANEY. a make-and-break mechanism controlled by Witnesses: 5 the roll and adapted to close the circuit to OTTO F. BARTHEL,

throw the latter in. G. E" MCGRANN.

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