US961655A - Sheet - Google Patents

Description

B. H. SPERBBRG.

MOVING PICTURE MACHINE.

APPLICATION FILED DEG. 11I 1909.

961,655, Patented June14,1910.

. s SHEETS-SHEET 1.

E. H. $PERBERG. MOVING PICTURE MACHINE.-

APPLIGATION FILED DEG.11, 1909.

961,655. Patented June '14, 1910.

3 SHEETS-SHEET 2.

B. H SPERBBRG. MOVING PICTURE MACHINE.

APPLICATION FILED DEG.11, 1909.

961,655. I d PatentedJune14,1910.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

EDWABD'H. srnnnnzao, or CHICAGO, ILLINOIS, ASSIGNOB TO THE SELIG roLYsCorE' COMPANY, or CHICAGO, ILLINOIS, ACORPORATION.

]1[0VIN.G-PICTUBE MACHINE.

Specification of Letters "Patent.

Patented June 14, 1910.

Original application filed April 17, 1909, Serial No. 490,465. Divided and this applieation filed December 11, 1909. Serial No. 532.676.

essary to make provision for cutting off the rays of light from the film in case of stoppage of the machine, so that the film will not become overheated by being allowed to stand inoperative for any appreciable length of time, in the rays of light. 'At the present time use is made of devlces for accomplishing this purpose, but as far as I am aware they have always been in the nature of centrifugal shutters of such design that suflicient reduction of the speed causes them to close the light opening. It is found, however, that the-use of a device acting in more positive manner than such shutters is desirable.

The object of the present invention is to provide a more "positively acting fire shutter or door than that now used, and one which may be easily applied to the ordinary type of moving picture machine.

.The' invention consists in the features of construction and combination of parts here inafter described and claimed.

In the drawings, Figure 1 is an elevation of a moving picture machine of the ordinary type, partly in section, having a fire door attache to it, the door being in closed position such 'as it assumes when. the driving handle is not completely inserted; Fig.2, a front elevation of such moving picture inachine, partly in section, showing the fire door in the open or operating position which it assumes when the drivin handle has been completely inserted into riving position, and showing also, in dotted lines, the position intowhich the door may be thrown for the purpose of changing the film; Fig. 3, a plan View of such moving picture machine, partly in section, showin the fire door in closed osition, and showing also, in dotted lines, t e aperture plate of the machine when it has been swung out for the purposeof changing or removing the film; and Fig. 4,

a side elevation of a portion of the machine, taken on line 5-5 of Fig. 3, looking in the direction of the arrow, and showing in detail the lever mechanism for raising andlowering the fire door, the door being thrown into its uppermost position.

A driving crank 6 is attached to a sleeve 7 which slides upon a drivin shaft 8, the sleeve being provided with a elical groove 9 adapted to engage with a pin .10 on the shaft, so that when the pin is entered into the groove and the sleeve is rotated the sleeve will be driven inwardly toward the machine, as shown in Fig. 2. A lever 11 is fulcrumed to the'frame of the machine ona In 12 by a pin 13, and said lever is provi ed at its lower end with a collar 14 which surrounds the driving shaft 8 and of which the hole is of such size that the collar can move freely back and forth between the positions shown in Figs. 1 and 2. It is evident that a complete insertion of the driving crank 6 and its rotation into the driving position will cause the lever 11 to bemoved from the Iposition shown in Fig. l to that shown in ig. 2, by reason of the engagement -of the sleeve 7 with the'collar 14.

not forced into the driving position of'Fig- 2 the spring 19 will tend to retract the pin 18 into the position of Fig. 1. A fire door :20 is loosely mounted on a shaft 21' (see Figs. 3 and 4) by means of acollar 22, and a circular groove 23 formed in the fire door 20 engages with a pin 24 carried by a collar 25 which isrigidly attached to the shaft 21. It will be seen that the door 20 may be rotated about the shaft 21 from the full line position of Fig. 2 to the dotted line posi tion shown in the same'figure. The shaft 21 carries rigidly on its inner end a crank 26 which is provided at its outer end with a rotatable pin 27, and said shaft is journaled at 28 to 2. lug 2.9 rigidly attached to the frame of the machine. The in 27 is provided with a hole 30 for recelving the upper end of the pin 18. It will thus be seen that the movement of the pin 18 from the position of Fig. 1 to that 0 Fig. 2 will "rotating t cause the lpin 27 to be carried over, thereby thereby uncovering the film aperture, as

shown in Fig. 2. The slot 23 is of such size and is so positioned in the fire door that the latter may be rotated; into the position shown in dotted lines in Fig. 2, in which position it will remain, and in which osition the aperture plate 31 willclear the re door and can be swung outwardly to the position shown ifidotted lines in Fig. 3. However, if the driving crank is removed when the fire door-is in the position shown in dotted lines in Fig. 2 the pin 24 will come into contact with the lower end of the slot 23 and will cause the fire door to drop into the closed position of Fi 1. i

It is evi ent that this deviceis one of reat simplicity, necessitating theuse of but few parts, and that it can be applied to many types of moving picture machines which are now in use, inasmuch as it does not necessitate the use of a new shutter, and inasmuch as the parts are of such construction thatthey can be easily ap lied to the ordinary moving picture mac ine. The 0 rator generally removes the driving han e from the machine when not in use, and in this way causes thefire door to be closed, so that if the light is not turned off the film will not be endangered. Furthermore, a sudden stoppage of driving tendency on the part of the operator will cause the sleeve 7 to become disengaged from the pin 10 by reason of the inertia of the machine carrying the shaft 8 for at least a portion ofa revolution.

Although I' have shown the several parts applied to a machine in which the aperture plate 31 swings out, as shown in Fig. 3, and

which construction necessitates the special design of the slot 23, still I do not limit my invention to such desi inasmuch as it is evident that the mac ine could be made without an slot whatever, the fire-door '20.

being rigi ly attached to the shaft 21 Other arrangements of levers might also be employed for transmitting motion from the driving sleeve to the the door, etc., but the fundamental principle of my invention resides in the combination of means for actuating the fire door by the insertion or removal of the driving crank or other device used for driving the machine.

I claim: a

1. The combination of a machine driving e crank 26 and the shaft 21, and

shaft, a pin mounted on said shaft, a driving sleeve for insertion on the shaft and having therein a slot for cotiperating with the pin, a collar surrounding the shaft and pivoted to the machine frame and adapted tobe contacted bythe driving sleeve, a rotary fire door, and a link mechanism for transmittin motion from the collar to the rotary fire oor, substantially as described.

2. The combination of a machine driving shaft, a pin mounted on the shaft, a drivin sleeve for engaging the driving shaft an having therein a slot for engagmg the pin,

a collar surrounding the driving shaft and pivoted to the machine frame and adapted to be contacted by the driving sleeve, said collar connected with a link mechanism, a spring for retracting the link mechanism, a rotary fire door, and means connecting the link mechanism with the fire door, said means adapted to rotate the fire door when the driving sleeve engages the collar, sub-.

stantially as described.

, 3; The combination of a machine driving shaft, a pin mounted on the shaft, a driving sleeve for engaging the driving shaft and having therein a slot for engaging the pin, a collar surrounding the driving shaft and adapted to be contacted by the driving sleeve, said collar connected with a link mechanism, a spring for retracting the link mechanism, a rotary fire door loosely mounted on a shaft and having therein ,a circular slot, said. shaft connected with the link mechanism by means of a crank, and a pin attached to the shaft and engaging the slot'in the fire door, substantially as described.

4. The combination of. a shaft, a crank pin attached to said shaft, a collar on said shaft, a fire door rotatably mounted on said collar, there being a segmental slot in said fire'door, the crank in being adapted to engage said slot, and means for rotating said shaft and crank pin when the machine driving mechanism'is inserted or retracted, said crank pin adapted to maintain the fire to be rotated away from the aperture door when the machine driving mechanism is inserted, substantially as described.

EDWARD n. SPERBERG.

Witnesses:

MARY R. Fnosr, Tnos. Banmnc, Jr.

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