US1367109A - Motion-picture apparatus - Google Patents
Motion-picture apparatus Download PDFInfo
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- US1367109A US1367109A US339974A US33997419A US1367109A US 1367109 A US1367109 A US 1367109A US 339974 A US339974 A US 339974A US 33997419 A US33997419 A US 33997419A US 1367109 A US1367109 A US 1367109A
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- Prior art keywords
- machine
- motor
- switch
- dowser
- lead
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
- G03B21/50—Control devices operated by the film strip during the run
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S200/00—Electricity: circuit makers and breakers
- Y10S200/11—Web or thread actuated
Definitions
- This invention relates to motion picture apparatus and more particularly to means for automatically stopping the display of pictures from one projecting apparatus and at the same time starting the display of pictures in another projecting apparatus so that there will be practically no break or intermission in the continuity of the display of picturesas one film runs out and another is to be started immediately following the running out of the first film; and the invention has the further object of providing an apparatus that not only acts automatically but is reliable and comparatively inexpensive and can be readily organized with apparatus of this kind in course of construction of the same and can also be readily applied to apparatus already constructed and also in use; and the invention consists of the features an embodiment of which is illustrated in the accompanying drawings and described and claimed herein.
- Figure 1 is a side elevation of one of two connected motion picture projecting apparatuses of any well-known type, a portion of the apparatus being broken away to show details of construction.
- Fig. 2 is a detail sectional elevational View on line 2-2 of Fig. 1 showing one type of dowser controlling switch.
- Fig. 3 is a section on line 33 of Fig. 2 looking at right angles to the plane of Fig. 2.
- Fig. 4 is a detail side elevation of a portion of a film reel showing a part of the circuit control merhanism mounted thereon.
- Fig. 5 is a side elevation of a portion of the film operating mechanism partly broken away to indicate means for operating the don'ser switch.
- Fig. 7 is a detail sectional elevation sub stantially longitudinal of a solenoid and its casing and showing in elevation at dowser connected thereto and disposed in relation to the cone of the lantern box, the cone being sectioned on line 7-7 of Fig. 1.
- F 1g. 8 is a side elevation of a portion of the cone, the latter being slightly broken away and showing the dowser attachment thereon.
- Fig. 9 is an elevational section on line 9-9 of F ig. 1 showing the action of the motor controlling switch device.
- a pair of projecting means including the cones C through which the beam of light from a lantern box is projected, these cones CC being respectively mounted upon two sets of machines having, for instance, motors A and B, the'se motors being appropriately connected as 'isyg-indicated in Fig. l to drive the mechanism usually provided in a housing H for winding the film F from one reel R in the upper magazine M to the lower magazine M, and as the winding mechanism involves no feature of the present invention a specific descrip tion of the same is therefore not necessary other than to say that such winding mechanism involves usually a governor shaft 2, Fig.
- a governor 3 which, in the present case, is connected to or carries an actuating device in the form of a disk 4 designed to engage with a complementary member which may be in the form of a lever 5, which lever when the governor device assumes a given position as determined by the speed of the shaft 2, will operate to close a circuit having contacts in the switch box 6.
- each lantern box of a given machine is provided at its outer end with a device for cutting off the beam of light emanating in the lantern box and this device preferably is in the form of a disk or closure D, as shown in Figs. 6 and 7, that is adapted to be swung down across the opening of the cone C to prevent the issue of the beam of light and thereby protecting the film until t e same is moving at a suflicient rate of speed as not to be burned or ignited and also for the purpose of instantly cutting off the rojection of pictures when this is rendere desirable for any cause.
- the dowser plate or disk D is mounted on the lower end of a lever 10 that is mounted on a pivot rod or stem 11 swinging freely in a bearing 12 mounted on a clamp ring 13 encompassing the outer end of the cone C.
- the dowser D is preferably counterbalanced or so constructed that it will remain substantially stable either in the closing position, Figs. 1 and 7, or in the open position as shown at the right in the diagram, Fig. 6, in the latter position permitting the free passage of beam of light from the lantern.
- One of the important features of my present invention is to provide for the automatic starting of the driving motor of one machine and at the same time, substantially, actuating a suitable means that will swing one dowser D to a closed position across the cone C of its machine while the corresponding dowser D of the other machine will be thrown to the open position, the opening of the dowser occurring substantially concurrently with the starting of the motor of its respective machine; it being immaterialthat the motor of the other machine in which the dowser has been thrown to closing position continues to operate for a short time so long as the projection of pictures by the apparatus is prevented when the other apparatus begins projecting.
- suitable wiring is provided and in this case is as follows:
- a main feed wire 15 is provided with a branch l5 connecting with one pole of the motor A and it is provided with a second branch 15 connecting with one pole of the motor B. From the opposite pole. of the motor B is led a branch or wire 16 which is extended over to the other machine, carrying the motor A, and in this wire there is provided a means or motor switch B from which extends a wire 17 that is connected at 18 to a feed wire 19 so that when the motor switch B is closed by the automatic action of means provided for that purpose then a circuit will have been completed through the motor B and operation of the respective machine started.
- the motor A has a return wire 16 led to the other machine, that is the machine with the motor B, and this wire 16 is provided with a main motor switch A from which is extended a connecting wire 17 also joined at the contact 18, for instance into the main feed wire 19. Therefore, it will be seen that when one of the machines is running, as for instance the machine with the motor A, then upon a predetermined time if the switch B thereon be thrown to closed position, as in Fig. 6, then a circuit will be completed through the motor B and its respective machine operated. Conversely, if the machine with the motor B is operating then upon a predetermined time the main motor switch A will be closed and the circuit diverted to the motor A of the other machine and it will be started.
- the motor switches A and B are preferably of a construction to make only instantaneous contacts, as are also the switches for actuating the dowsers D, to be hereinafter explained, and therefore, any suitable form of magnetic starting device may be used in connection therewith for starting the motors and maintaining a properly closed circuit during operation.
- a rock shaft 20 journaled in suitable bearings 21, the shaft being disposed across an opening 22 such as usually found in the side plates of ordinary reels or which opening may be especially provided if desired, and through this there is normally projected the inturned end of a lever 23, Figs. 4 and 9, this inturned end being normally positioned at such a location with respect to a film wound on the reel that at a suitable time in the unwinding of the film the lever or finger 23 will be freed from the film and swung or permitted to move to the dotted line position, Fig. 9, this movement being accomplished as by a spring 24.- wound around the rock shaft 20 and fixed at one end so as to react to rock the shaft with the finger in the desired direction.
- the finger 23 having been released by the unwinding film F is adapted to project so that during the rotation of the reel R the finger or portion thereof will engage a tappet lever 25, Figs. 1 and 9, disposed on a pivot or rock shaft 26 that is 'ournaled at 27 in the side of the magazine its , and on the 13C outer end of the pivot shaft 26 is attached another lever 28 to the swinging end of which is connected a push rod or trigger 29.
- this trio rod 29 is designed to actuate the switch for controlling the circuit of the motor B on the other machine of the combination'
- the switch B is preferably of the same construction as shown in Fig.
- Each switch box 6 is provided with a switch arm 35 of any suitable construction and appropriately mounted, as for instance on a pivot shaft 36, Figs. 2 and 3, the ends of the switch arm 35 being adapted to engage respective contacts 37 and 38 from which lead respectively a wire 37 which is connected to the feed wire 19 as at 39, the contact 37 being connected to a wire 40 having one branch 41 extending into a duplex solenoid, one coil of which is indicated at 42 and one end'of which is connected to a common wire 43 which is connected at 44 to the main feed wire 15 so that a circuit is closed through the main feed wire 15, branch 43, coil 42, return 41 to the wire. 40 with its contact 37.
- duplex solenoids operate in similar manner and are respectively connected to dowsers D on their machines.
- a suitable method of connection in an embodiment of the invention is shown in Figs. 7 and 8 in which the coils 42 and 42 of a solenoid are mounted in a suitable casing 52 in the ends of which are arranged adjusting screws 53 which may be provided with bumpers 54 on their inner ends that extend into the sleeve of the solenoid and in which there operates a core 55 one end of which is provided with a rod 56 passing throu h an end of the easing and through one of the adjusting screws 53, the outer end of the rod 56 being provided with a cross pin 57 on which is mounted a' pivoting block 58 sliding in a bifurcated or slotted arm 59 that is attached to. a convenient portion of the pivot or rock shaft 11 of the respective dowser D.
- the excited coil will cause a longitudinal movement of the core 55.
- the coil 42 is energized then the core 55, Fig. 7, is thrown to the position shown with the result that the dowser is set across the end of the cone C to cut off the beam, and, conversely, when the control switch 35 on the other machine is thrown so as to energize the coil 42 the core 55 is shifted reversely or to the opposite end of the coil in Fig. 7 and the dowser D is swung to a position indicated at the right of Fig. 6.
- the dowser controlling switches 35 are respectively operated on the different machines when the coupling or actuating member 5 thereof is shifted by the action of the governing device 3, this transmitting member 5-being designed to engage with a push rod 5', Figs. 2 and 3, extending into the casing. 6 and normally resting against a contiguous portion of the switch arm 35, the latter being shown as having a supporting shoulder 35 on which the end of the rod 5' normally rests when the switch arm 35 is thrown to the upright position under the ac tion of a return spring 35 surrounding the pivot pin or stud 36.
- Motion picture apparatus having, in combination, a plurality of motion. picture machines with a motor for each, a. dowser for each machine, and means for automatically closing the dowser of either machine and opening the dowser of the other and for starting the motor of the machine on which the dowser is opened.
- Motion picture apparatus having, in combination, a plurality of motion picture machines with a motor for each, a dowser for each machine, and electromagnetic means for automatically closing the dowser of either machine and opening the dowser of the other and for starting the motor of the machine on which the dowser is opened.
- Motion picture apparatus having, in combination, a plurality of motion picture machines each with a dowsing device to control-the passage of light to films in the machines, motors for the respective machines, and film controlled means for reversing the positions of the said devices to control projection of pictures.
- Motion picture apparatus having, in combination, a plurality of motion picture machines with a motor for each, a dowser for each machine, and film controlled means for automatically closing the dowser of either machine and opening the dowser of the other and for starting the motor of the machine on which the dowser is opened.
- a motion picture apparatus having, in
- a plurality of projection machines for each machine, a motor for operating each machine, a film controlled means on each machine for starting the motor of the other machine, and speed controlled means on each machine for simultaneously actuating the dowsers to close one as the other opens.
- a motion picture apparatus having, in combination, a plurality of projection machines, dowsers for each machine, a suitable motive power for actuating the machines, film controlled means on each machine for operatively connecting the other machine with its motive power, and speed controlled means on each machine to simultaneously actuate the dowsers, to close one as the other opens.
- a motion picture apparatus having, in combination, a plurality of projecting machines, a dowser pivotally mounted on each machine to control the projection of light to the films, a motor for operating each machine, electro-magnetic means for actuating said dowsers to alternately open and close the light apertures, a speed controlled switch on each machine for closing circuits to simultaneously actuate the dowser actuating means, and film controlled switches on each machine for closing circuits to operate the motor on the opposite machine.
- a motion picture apparatus having, in combination, a plurality of projecting machines, dowsers to control the, light on each machine, a suitable motive power for actuating the machines independently of each other, film controlled means on each machine for independently starting the motive power of the other machine, and speed controlled means on each machine for simultaneously actuating the dowsers to open the one on the machine just starting and closing the other.
- a motion picture apparatus having, in combination, a plurality of projecting machines, dowsers over the light apertures on each machine, a suitable motive power for actuating the machines independently of each other, film controlled means on each machine for independently connecting the machines with their motive power, and speed controlled means on each machine for simul taneously actuating the dowsers to cover one light aperture and uncover the other, said last mentioned means adapted to be actuated by the initial starting of its machine when it has acquired a predetermined speed.
- a motion picture apparatus having, in combination, a plurality of projecting machines, dowsers for the light apertures in each machine, electro-magnets for actuating said dowsers to alternately cover and uncover the light apertures, motors to operate each machine independently of the other, film controlled means on each machine for independently starting the motor of the other machine, and speed controlled means on each machine for simultaneously actuating the dowser actuating means, said speed controlled means each being adapted to be actuated by the initial starting of the machine on which it is mounted when it has attained a predetermined speed, to uncover the light aperture on such machine and cover the light aperture on the other.
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Description
F. E. WEAVER.
MOTION PICTURE APPARATUS;
APPLICATION FILED NOV-22,1919.
1,367,109. Patented Feb. 1,1921.
3 SHEETS-SHEET 1.
OOOOOOOO I/YVEN'T'OFr' Mwd Z7- l V a V6 F. E. WEAVER.
MOTION PICTURE APPARATUS.
APPLICATION FILED NOV. 22. 1919.
1,367,109. Patented Feb. 1, 1921.
3 SHEETSSHEET 2.
F. E. WEAVER.
MOTION PICTURE APPARATUS.
APPLICATION FILED NOV. 22, 1919.
1,367,109. Patented Feb. 1,1921.
3 SHEETSSHEET 3.
cu /A %ii i A FRED E. WEAVER, OF LOS ANGELES, CALIFURNIA, ASSIGNQR. 0E ONE-HALF I50 O. WEAVER], 0F 'WATT$, CALIFQRNIA.
MOTION-PICTURE APPARATUS.
Specification of Letters Patent.
Patented Feb, 1., 1921..
Application filed November 22, 1919. aerial No. 339,974.
To all whom it may concern Be it known that I, FRED E. WEAVER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Motion-Picture Apparatus, of which the following is a specification...
This invention relates to motion picture apparatus and more particularly to means for automatically stopping the display of pictures from one projecting apparatus and at the same time starting the display of pictures in another projecting apparatus so that there will be practically no break or intermission in the continuity of the display of picturesas one film runs out and another is to be started immediately following the running out of the first film; and the invention has the further object of providing an apparatus that not only acts automatically but is reliable and comparatively inexpensive and can be readily organized with apparatus of this kind in course of construction of the same and can also be readily applied to apparatus already constructed and also in use; and the invention consists of the features an embodiment of which is illustrated in the accompanying drawings and described and claimed herein.
Figure 1 is a side elevation of one of two connected motion picture projecting apparatuses of any well-known type, a portion of the apparatus being broken away to show details of construction.
Fig. 2 is a detail sectional elevational View on line 2-2 of Fig. 1 showing one type of dowser controlling switch. a
Fig. 3 is a section on line 33 of Fig. 2 looking at right angles to the plane of Fig. 2.
,Fig. 4 is a detail side elevation of a portion of a film reel showing a part of the circuit control merhanism mounted thereon.
Fig. 5 is a side elevation of a portion of the film operating mechanism partly broken away to indicate means for operating the don'ser switch.
present invention has been incorporated.
Fig. 7 is a detail sectional elevation sub stantially longitudinal of a solenoid and its casing and showing in elevation at dowser connected thereto and disposed in relation to the cone of the lantern box, the cone being sectioned on line 7-7 of Fig. 1.
F 1g. 8 is a side elevation of a portion of the cone, the latter being slightly broken away and showing the dowser attachment thereon. 1
Fig. 9 is an elevational section on line 9-9 of F ig. 1 showing the action of the motor controlling switch device.
In the projection of motion pictures it is the common practice to have a plurality of motion picture machines set in convenient relation so that as soon as one film is run ofif in one machine the operator may as quickly as possible start the operation of another machine to continue the display or projection of pictures, especially when the pictures of the several films are related to the same subject, and thus eliminate any appreciable intermission in the projection of the series, and it is for the purpose of providing the automatic cutting out of the pictures from one projecting apparatus as the film is run out and automatically initiating the projection of pictures from another apparatus that I have devised the present invention which obviously may be incorporated in organization with various types of motion picturemachines and apparatus and may assume various forms in its practical application.
In Fig 6 is shown a pair of projecting means including the cones C through which the beam of light from a lantern box is projected, these cones CC being respectively mounted upon two sets of machines having, for instance, motors A and B, the'se motors being appropriately connected as 'isyg-indicated in Fig. l to drive the mechanism usually provided in a housing H for winding the film F from one reel R in the upper magazine M to the lower magazine M, and as the winding mechanism involves no feature of the present invention a specific descrip tion of the same is therefore not necessary other than to say that such winding mechanism involves usually a governor shaft 2, Fig. 1, in which is mounted a governor 3 which, in the present case, is connected to or carries an actuating device in the form of a disk 4 designed to engage with a complementary member which may be in the form of a lever 5, which lever when the governor device assumes a given position as determined by the speed of the shaft 2, will operate to close a circuit having contacts in the switch box 6.
The cone C of each lantern box of a given machine is provided at its outer end with a device for cutting off the beam of light emanating in the lantern box and this device preferably is in the form of a disk or closure D, as shown in Figs. 6 and 7, that is adapted to be swung down across the opening of the cone C to prevent the issue of the beam of light and thereby protecting the film until t e same is moving at a suflicient rate of speed as not to be burned or ignited and also for the purpose of instantly cutting off the rojection of pictures when this is rendere desirable for any cause.
As shown in Figs. 7 and 8, the dowser plate or disk D is mounted on the lower end of a lever 10 that is mounted on a pivot rod or stem 11 swinging freely in a bearing 12 mounted on a clamp ring 13 encompassing the outer end of the cone C. The dowser D is preferably counterbalanced or so constructed that it will remain substantially stable either in the closing position, Figs. 1 and 7, or in the open position as shown at the right in the diagram, Fig. 6, in the latter position permitting the free passage of beam of light from the lantern.
One of the important features of my present invention is to provide for the automatic starting of the driving motor of one machine and at the same time, substantially, actuating a suitable means that will swing one dowser D to a closed position across the cone C of its machine while the corresponding dowser D of the other machine will be thrown to the open position, the opening of the dowser occurring substantially concurrently with the starting of the motor of its respective machine; it being immaterialthat the motor of the other machine in which the dowser has been thrown to closing position continues to operate for a short time so long as the projection of pictures by the apparatus is prevented when the other apparatus begins projecting.
To secure the automatic starting of themotor of one machine, as for instance the motor B, in Fig. 6, and simultaneously close the dowser D of the machine having the motor A and actuating the dowser D of the machine having the motor B to be started so as to uncover the cone opening, suitable wiring is provided and in this case is as follows:
A main feed wire 15 is provided with a branch l5 connecting with one pole of the motor A and it is provided with a second branch 15 connecting with one pole of the motor B. From the opposite pole. of the motor B is led a branch or wire 16 which is extended over to the other machine, carrying the motor A, and in this wire there is provided a means or motor switch B from which extends a wire 17 that is connected at 18 to a feed wire 19 so that when the motor switch B is closed by the automatic action of means provided for that purpose then a circuit will have been completed through the motor B and operation of the respective machine started.
In a similar way the motor A has a return wire 16 led to the other machine, that is the machine with the motor B, and this wire 16 is provided with a main motor switch A from which is extended a connecting wire 17 also joined at the contact 18, for instance into the main feed wire 19. Therefore, it will be seen that when one of the machines is running, as for instance the machine with the motor A, then upon a predetermined time if the switch B thereon be thrown to closed position, as in Fig. 6, then a circuit will be completed through the motor B and its respective machine operated. Conversely, if the machine with the motor B is operating then upon a predetermined time the main motor switch A will be closed and the circuit diverted to the motor A of the other machine and it will be started. The motor switches A and B, are preferably of a construction to make only instantaneous contacts, as are also the switches for actuating the dowsers D, to be hereinafter explained, and therefore, any suitable form of magnetic starting device may be used in connection therewith for starting the motors and maintaining a properly closed circuit during operation.
Manifestly, diverse means may be employed for throwing the motor switches, and in this case there is mounted on the reels R that are placed in the upper magazine M, for instance, a rock shaft 20 journaled in suitable bearings 21, the shaft being disposed across an opening 22 such as usually found in the side plates of ordinary reels or which opening may be especially provided if desired, and through this there is normally projected the inturned end of a lever 23, Figs. 4 and 9, this inturned end being normally positioned at such a location with respect to a film wound on the reel that at a suitable time in the unwinding of the film the lever or finger 23 will be freed from the film and swung or permitted to move to the dotted line position, Fig. 9, this movement being accomplished as by a spring 24.- wound around the rock shaft 20 and fixed at one end so as to react to rock the shaft with the finger in the desired direction.
The finger 23 having been released by the unwinding film F is adapted to project so that during the rotation of the reel R the finger or portion thereof will engage a tappet lever 25, Figs. 1 and 9, disposed on a pivot or rock shaft 26 that is 'ournaled at 27 in the side of the magazine its , and on the 13C outer end of the pivot shaft 26 is attached another lever 28 to the swinging end of which is connected a push rod or trigger 29. Assuming that the trip mechanism just described is mounted on the machine having the motor A, Fig. 1, this trio rod 29 is designed to actuate the switch for controlling the circuit of the motor B on the other machine of the combination' The switch B is preferably of the same construction as shown in Fig. 2, and is shown as mounted on the side of the upper magazine M in a box 30 in which are provided the contacts forthe wiring 16 and 17 so that when the push rod 29 throws the switch on B a circuit is completed at the contacts of the terminals in the switch box and the motor B thus started. Obviously a similar organization is arranged on the machine having the motor B so that at a desired period in the unwinding of a film from the magazine M the complementary motor switch A of the other machine will be likewise operated.
Having thus above provided for the automatic starting of the motor of one or" the machines, it is desirable to provide for the simultaneous. closing of one dowser and opening of the other and this is accomplished in one embodiment of the invention through a device above referred to including the governor 3 and the actuating member 5 which is provided to throw a switch located in the switch. box 6 one for each machine.
Each switch box 6 is provided with a switch arm 35 of any suitable construction and appropriately mounted, as for instance on a pivot shaft 36, Figs. 2 and 3, the ends of the switch arm 35 being adapted to engage respective contacts 37 and 38 from which lead respectivelya wire 37 which is connected to the feed wire 19 as at 39, the contact 37 being connected to a wire 40 having one branch 41 extending into a duplex solenoid, one coil of which is indicated at 42 and one end'of which is connected to a common wire 43 which is connected at 44 to the main feed wire 15 so that a circuit is closed through the main feed wire 15, branch 43, coil 42, return 41 to the wire. 40 with its contact 37. There is also connected to the wire 40 another branch 45 that extends to the other machine and is attached to one terminal of one coil as 46 also forming a part of another duplex solenoid; the coils of on the machine havingthe motor A the solenoid including coils 42 and 42 and I have also provided a duplex solenoid on the machine with the motor B having coils 46 and 46.
These duplex solenoids operate in similar manner and are respectively connected to dowsers D on their machines. A suitable method of connection in an embodiment of the invention is shown in Figs. 7 and 8 in which the coils 42 and 42 of a solenoid are mounted in a suitable casing 52 in the ends of which are arranged adjusting screws 53 which may be provided with bumpers 54 on their inner ends that extend into the sleeve of the solenoid and in which there operates a core 55 one end of which is provided with a rod 56 passing throu h an end of the easing and through one of the adjusting screws 53, the outer end of the rod 56 being provided with a cross pin 57 on which is mounted a' pivoting block 58 sliding in a bifurcated or slotted arm 59 that is attached to. a convenient portion of the pivot or rock shaft 11 of the respective dowser D.
Therefore, upon the closure of the switch 35 of a. respective solenoid with the dual coils the excited coil will cause a longitudinal movement of the core 55. As for instance it the coil 42 is energized then the core 55, Fig. 7, is thrown to the position shown with the result that the dowser is set across the end of the cone C to cut off the beam, and, conversely, when the control switch 35 on the other machine is thrown so as to energize the coil 42 the core 55 is shifted reversely or to the opposite end of the coil in Fig. 7 and the dowser D is swung to a position indicated at the right of Fig. 6.
The dowser controlling switches 35 are respectively operated on the different machines when the coupling or actuating member 5 thereof is shifted by the action of the governing device 3, this transmitting member 5-being designed to engage with a push rod 5', Figs. 2 and 3, extending into the casing. 6 and normally resting against a contiguous portion of the switch arm 35, the latter being shown as having a supporting shoulder 35 on which the end of the rod 5' normally rests when the switch arm 35 is thrown to the upright position under the ac tion of a return spring 35 surrounding the pivot pin or stud 36.
. As the push rod 5 is thrust against the adjacent end of the lever 35 the latter is tilted to the dotted line position, Fig. 2, and
Current is supplied to the the end of the rod 5 slips off of its support 35 and permits the spring 35 to return the switch arm 35 to a circuit breaking position shown in full lines. When the switch arm 35 is thrown to the dotted line position the circuit is .closed through the contacts 37 and 38. This momentary completion of a circuit by the given switch 35 is suflicient to excite respective coils of the duplex solenoids so that the positions of the dowsers D are simultaneously reversed.
The operation ofmy invention as a whole is as follows:
Assuming the projector operated by the motor A. to be projecting a picture; when the picture film reaches 1ts end, the switch B is closed by the disengagement of \the arm 23 from. said film, through the medium of the arm 25, shaft 26, arm 28 and push rod 29 of said projector, whereupon the motor B of the other projector is operated, the current passing through main 15, lead 15", motor B, lead 16", switch B, lead 17" and main 19. When the shaft 2 of said other projector, which is driven by the motor B, reaches a predetermined speed, the switch 35 of said projector is closed by the governor 3 thereof, whereupon the coils 42 and 46 are energized and the dowsers D of the projectors driven by motors A and B are respectively closed and opened, the current passing throu h main 15, lead 43, coil 42, lead 50, switc 35, lead 37 and main 19, and through main 15, lead 15, lead 47, coil 46*, lead 51, switch 35, lead 37 and main 19, as shown in heavy lines in Fig. 6.
When. the film of the projector operated by the motor B reaches its end, the switch A is closed by the disengagement of the arm 23 from said film, through the medium of the arm 25, shaft 26, arm 28 and push rod 29 of said projector, whereupon the motor A of the first projector is operated, the current passing through main 15, lead 43, lead 15, motor A, lead '16, switch A', lead 17" and main 19. When the shaft 2 of said first projector, which is driven by the motor A, reaches a predetermined speed, the switch 35 of said projector isclosed by the governor 3 thereof, whereupon the coils 42 and 46 are energized and the dowsers D of the projectors driven by motors A and B are respectively opened and closed, the current passing through main 15, lead 43, coil 42, lead 41, lead 40, switch 35 of said projector, lead 37 and main 19, and through main 15, lead 15", lead 47, coil 46, lead 45, lead 40, switch 35, lead 37 and main 19 as shown in light lines in Fig. 6.
Various changes may be made without departing from the spirit of my invention as claimed.
I claim:
1. Motion picture apparatus having, in combination, a plurality of motion. picture machines with a motor for each, a. dowser for each machine, and means for automatically closing the dowser of either machine and opening the dowser of the other and for starting the motor of the machine on which the dowser is opened.
2. Motion picture apparatus having, in combination, a plurality of motion picture machines with a motor for each, a dowser for each machine, and electromagnetic means for automatically closing the dowser of either machine and opening the dowser of the other and for starting the motor of the machine on which the dowser is opened.
3. Motion picture apparatus having, in combination, a plurality of motion picture machines each with a dowsing device to control-the passage of light to films in the machines, motors for the respective machines, and film controlled means for reversing the positions of the said devices to control projection of pictures.
4. Motion picture apparatus having, in combination, a plurality of motion picture machines with a motor for each, a dowser for each machine, and film controlled means for automatically closing the dowser of either machine and opening the dowser of the other and for starting the motor of the machine on which the dowser is opened.
5. A motion picture apparatus having, in
combination, a plurality of projection machines, dowsers for each machine, a motor for operating each machine, a film controlled means on each machine for starting the motor of the other machine, and speed controlled means on each machine for simultaneously actuating the dowsers to close one as the other opens.
6. A motion picture apparatus having, in combination, a plurality of projection machines, dowsers for each machine, a suitable motive power for actuating the machines, film controlled means on each machine for operatively connecting the other machine with its motive power, and speed controlled means on each machine to simultaneously actuate the dowsers, to close one as the other opens.
7. A motion picture apparatus having, in combination, a plurality of projecting machines, a dowser pivotally mounted on each machine to control the projection of light to the films, a motor for operating each machine, electro-magnetic means for actuating said dowsers to alternately open and close the light apertures, a speed controlled switch on each machine for closing circuits to simultaneously actuate the dowser actuating means, and film controlled switches on each machine for closing circuits to operate the motor on the opposite machine.
8. A motion picture apparatus having, in combination, a plurality of projecting machines, dowsers to control the, light on each machine, a suitable motive power for actuating the machines independently of each other, film controlled means on each machine for independently starting the motive power of the other machine, and speed controlled means on each machine for simultaneously actuating the dowsers to open the one on the machine just starting and closing the other.
9. A motion picture apparatus having, in combination, a plurality of projecting machines, dowsers over the light apertures on each machine, a suitable motive power for actuating the machines independently of each other, film controlled means on each machine for independently connecting the machines with their motive power, and speed controlled means on each machine for simul taneously actuating the dowsers to cover one light aperture and uncover the other, said last mentioned means adapted to be actuated by the initial starting of its machine when it has acquired a predetermined speed.
10. A motion picture apparatus having, in combination, a plurality of projecting machines, dowsers for the light apertures in each machine, electro-magnets for actuating said dowsers to alternately cover and uncover the light apertures, motors to operate each machine independently of the other, film controlled means on each machine for independently starting the motor of the other machine, and speed controlled means on each machine for simultaneously actuating the dowser actuating means, said speed controlled means each being adapted to be actuated by the initial starting of the machine on which it is mounted when it has attained a predetermined speed, to uncover the light aperture on such machine and cover the light aperture on the other.
In testimony whereof I have signed my name to this specification.
F. E. WEAVER.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US339974A US1367109A (en) | 1919-11-22 | 1919-11-22 | Motion-picture apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US339974A US1367109A (en) | 1919-11-22 | 1919-11-22 | Motion-picture apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
US1367109A true US1367109A (en) | 1921-02-01 |
Family
ID=23331359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US339974A Expired - Lifetime US1367109A (en) | 1919-11-22 | 1919-11-22 | Motion-picture apparatus |
Country Status (1)
Country | Link |
---|---|
US (1) | US1367109A (en) |
-
1919
- 1919-11-22 US US339974A patent/US1367109A/en not_active Expired - Lifetime
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