US1090128A

US1090128A - Indicating device for moving-picture films.

Info

Publication number: US1090128A
Application number: US74339313A
Authority: US
Inventors: Franklin H Avers
Original assignee: Individual
Current assignee: Individual
Priority date: 1913-01-21
Filing date: 1913-01-21
Publication date: 1914-03-17
Anticipated expiration: 1931-03-17

Description

F. H. AVEES.

INDIGATING DEVICE FOR MOVING PICTURE FILMS.

APPLICATION FILED JAN.21.1913.

1,090,128, Patented Mar. 17, 1914.

v 2 SHEETB-SHEET 1.

8 n ucmtoz l vbtueoow l g attain:

F. H. AVERS. INDIGATING DEVICE FOR MOVING PICTURE FILMS. APPLICATIQB FILED JAN. 21.1913. 1,090,128. Patented Mar. 17, 1914.

2 SHEETS-SHEET Z.

UNITED STATES PATENT. OFFICE.

FRANKLIN H. AVERS, FORT-AGE, WISCONSIN.

INDICATING/DEVICE FOR MOVING-PICTURE FILMS.

Application State of lVisconsin, have invented new and useful Improvements in Indicating Devices for Moving-Picture Films, of which the following is a specification.

The invention relates to moving picture films and has for an object to provide a device which is operable by the action of the film when the same is wound upon or unwound from a film, contained in a magazine,

. and whereby the amount of film whichis wound upon or unwound from the reel will be indicated exteriorly of the magazine, thus obviating the necessity of opening the door of the magazine to determine how much of the film has been wound upon or unwound from the reel.

The usual method of determining the amount of film which has been unwound from a reel contained in the primary magazine is toopen the door of'the magazine and roughly judge by the thickness of the film on the reel just how much of the film has been unwound therefrom. This method is not only inaccurate but is impractical and dangerous inasmuch as the film contained on the reel is exposed to the heat of the lantern at the moment the door of the magazine is opened and if the door is left open for even a very short time the inflammable film will catch fire and burn up. To remedy this defect in the exhibition of moving pictures by means of a strip film or the like, I employ a device which is operated by the unwinding action of the film when the same is unwound from the primary reel in the upper magazine, with means for retaining the device in an inoperative osit-ion while the reel is being removed rom or inserted the magazine.

In the furtherdisclosure of the invention reference is to be had to' the accompanying drawings, constituting a part of this specification, in which similar characters of reference denote corresponding parts in all the on the upper magazine 10 that the downviews, and in which:

magazine, showing my device appliedthereto and disclosed in' operative positlon in dotted lines and in inoperative position in;

Figure 1 is a side elevation of the upper Specification of Letters Patent. Patented Mar. 1'7, 1914;.

filed January 21, 1913. seriai No. 743,393.

plan view showing the pin on the closure in position to engage the locking lever and move the same into unlocked posit-ion; Fig. 3 1s a vertical sectional View taken on the 11116 33 in Fig. 2; Fig. 4 is a horizontal sectional View taken on 'the line 44 in Fig. Fig. 5 is a vertical transverse sectional View taken on the line 55 in Fig. 1.

Referring more particularly to the views, I disclose an upper magazine 10 of the usual shape and type and provided with a spindle 11 arranged transversely in the upper magazine and adapted to normally support. a reel 12 initially carrying a film 13 and preferably known as the primary reel, a door 14 being mounted to swing on the upper magazine to normally close the magazine and form a side thereof.

Rigidly supported at the top of the upper magazine 10 and exteri'orly thereof is a base 15 and projecting upwardly from the base is an upright 16 terminating at the up per end in a downwardly extending pointer 17, the said pointer and upright being preferably made from a single piece of material. The 'base 15 is provided with a longitudinal slot 18 registering with a longitudinal slot 19 in the upper magazine 10.

A horizontal shaft 20 is journaled in bearings 21 supported on the base 15 and mounted to swingv on the said shaft is an indicator 22 comprising an indicator plate 23 and a bar 24terminating at its free end in a ball-like head 25 preferably made of gutta percha or some other suitable material, the said bar being curved to conform to a portion of the periphery of the upper magazine and being flattened at its upper end and at which point it is mounted to swing on the shaft 20, the indicator above the shaft being fan shaped to provide the above mentioned indicator plate 23 and which is procator plate .at its lower extremity projects through. the slot 19 in the upper magazine and also passes through the slot 18 in the base15, the indicator 22 being so mounted wardly extending pointer '17 formed with the upright 16 Wlll lie immediately in front of and slightly spaced from the indicator plate, as shown in Fig. 1. Now it will be apparent that when the primary reel 12, revolubly supported in the upper magazine :vided with a series of graduations 26, it being readily understood that the indi- 10, has a complete film wound thereon and which is to be unwound therefrom to be ad vanced through the moving picture machine, the weight of the bar 24 and head 25 thereof will cause the head 25 to engage the face of that portion of the film which is exposed on the reel as shown in dotted lines in Fig. 1, and it will be further seen that when the head 25 engages 'the face of the film as mentioned," the pointer 17 willregister with one of the graduations 26 on the plate 23 and which indicates, preferably by the word Full, that the complete film is wound upon the reel in the upper magazine. Now asthe film is unwound from the primary reel 12 the diametrical thickness of the film will naturally decrease and, therefore, the indicator 22, tending by its weight at. the lower .end thereof to assume a balanced position with respect to the shaft on which 1t is "carried, will be actuated so-that the head 25 will move closer toward the hub of the primary reel as the film is unwound therefrom, and the resulting movement of the bar 24 and head 25 will cause the indicator plate to'swing toward the left, thus at all times denoting, in connection with the ointer 17 and the graduations 26 on the indicator plate, how much of the film still remains on the primary reel in the magazine, so that the operator will know the moment that the end of the film is reached on theprimary reel without necessitating ex posing the film to the dangers of ignition from the lantern of the moving picture machine.

-As mentioned heretofore, the door 14 is mounted to swing on the upper magazine 10 to close an opening in the side thereof and through which the primary reel is passed when it is placed on the spindle in the upper magazine. Now in order to return the indicator 22 to inoperative position after the same has been once employed to indicate the unwinding of the film from the primary reel, a. lever 27 is niounted to swing on the base 15 and project across the slot 18, with the inner end of the lever having connection with a contractile spring 28 secured to the base 15, the other end of the lever extending outwardly beyond an edge of the upper magazine and adapted to be engaged by an upwardly projecting pin 29 carried by the door 14 as shown in Fig. 2.- Now when the indicator has been used in the manner mentioned heretofore toindicate at all times the amount of film unwound from the primary reel, it will be apparent that the lower portion of the indicator, namely, the bar 24 and head 25, should be returned to inoperative position and lie against the inner wall of the upper magazine and in spaced relation to the primary reel so that the primary reel can be removed from the upper magazine when the door is opened, and it willv be further apwhen the door is closed the pin 29 engaging the outer end of the lever 27, swings the lever so that the inner end thereof will lie outside of the vertical plane of the slot 18 and which constitutes the path of the indicator 23 so that the indicator plate will not be restricted in its swinging movement by the inner end of the lever, the said lever being furthermore locked in this position when the door 14 is closed and held against the contractile action of the spring 28. Now when the film has been unwound from the primary reel and the indicator plate, together with the pointer 17, denotes that this has been accomplished, the operator stops the unwinding of the film from the primary reel and opens the door 14 to remove the primary reel therefrom. At the moment the door is swung open the pin 29 will be disengaged from t e lever 27, thus releasing the lever so that t e same, subject to the contractile action of the spring 28, will swing into; the path of the indicator plate 26 and abut against an end of the indicator plate, thus moving the indicator plate back to in operative position and, consequently, swinging the bar 24 and head 25 out of the range parent that of the primary reeland against the inner wall of the upper magazine as shown in full lines in Fig. 1. The primary reel can now be easily removed from the magazine and a new reel inserted. The door is then closed and the closing of the door will again cause the pin 29 to engage the lever 27- and swing the same against the contractile action of the spring 28 and out of the path of the indicator plate 26, thus releasing the indicator so that the bar 24 and head 25 will swing downwardly within the magazine until the head engages the face of the outer end of the film carried by the primary reel, it being understood that when the head engages the face of the end of the film, the pointer 17 will register with the particular graduation 26 on the indicator plate denoting that the primary reel is full or, in other words, carries a complete film. Now as the film is un-' wound from the primary reel, the lower portion of the indicator will again swing inwardly toward thehub of the reel, thus swinging the indicator plate in the opposite direction and in consequence thereof the pointer 17 having the indicator plate passing behind the same will, together with the graduations 26, indicate the amount of film which is being unwound from the primary ree It will be understood that the device describedherein is primarily employed as an indicating device for indicating the amount of film which is wound upon or unwound from a reel, it being readily seen that the device disclosed, although described as being-used in connection with the unwinding of the film, can also be employed to indicate the amount of film which is wound upon the reel and it will be further understood that the device in no sense constitutes a tension mechanism for exerting a tension on the film, it being well known that'devices of this character'have been used heretofore for the purpose of causing the film to evenly and uniformly unwind from the primary ree Having "thus described my invention, 1 claim: v

1. A device for indicating the amount of film unwound from or wound on toa reel comprising a magazine containing the reel, an indicator mounted to swing on the mag azine and adapted to be located according to the amount of film on the said reel to indicate eXteriorly of the said magazine the amount of film unwound from or wound on to the said reel, a closure mounted to swing on the magazine to normally close the same, and means normally locking the indicator in an inoperative position and adapted to be engaged by the said closure as it closes and moved into and held in an unlocking position to release the said indicator.

2. In an indicating device for motion picture films, the combination with a film containing magazine, of a closure therefor, an indicator for indicating the amount of film removed from or advanced into the magazine, a locking element normally locking the indicator in a rigid and inoperative position, and means on the closure for moving the locking element into an unlocked position relatively to the indicator when the closure is being closed.

3. In an indicating device for motion picture films, the combination with a magazine, of a film containing reel supported in the magazine, an indicator for indicating the amount of film unwound from or. wound on to the said reel, a locking element normally holding the indicator in an inoperative position, and a closure for the magazine and adapted to actuate the lockmg element when the closure is closed to free the indicator from its inoperative position. v

4-. In an indicating device for motion picture films, the combination with a magazine, of a film containing reel therein, an indicator for indicating the amount of film unwound from or wound on to the said reel, a spring-actuated locking element normally holding the indicator in a locked position, a closure for the magazine, and means on the closure and adapted to engage the locking element and move the same to free the said indicator from inoperative position, when the said closure is swung into closed position relatively to the magazine.

5. In an indicating device for motion picture films, the combination with a magazine, of a film containing reel therein, an indicator for indicating the amount of film unwound from or wound on to the said reel, a spring-actuated locking element normally holding the indicator in an inoperative position, a closure for the magazine, and a pin on the closure and adapted to engage the locking element and move the same to free the said indicator from inoperative position, when the said closure is swung into closed position relatively to the magazine.

6. In'an indicating device for motion picture films, the combination with a magazine,

of a film containing reel therein, swinging means for indicating the amount of film unwound from or wound on to the said reel, a closure for the magazine, and an element normally holding the said means in inoperative position and operable to free the said means from inoperative position when the closure is swung into closed position on the magazine to actuate the said element.

In testimony whereof I ailix my signature in presence of two wltnesses.

FRANKLIN H. AVERS.

lVitnesses FRANKLIN G. AVERs, HARRY A. RACE.