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Publication numberUS2562959 A
Publication typeGrant
Publication dateAug 7, 1951
Filing dateOct 13, 1947
Priority dateOct 13, 1947
Publication numberUS 2562959 A, US 2562959A, US-A-2562959, US2562959 A, US2562959A
InventorsEmery I Stern
Original AssigneeEmery I Stern
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electromechanical scent distribution to accompany a motion picture
US 2562959 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)


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l-HS ATTCRNE-Y Patented Aug. 7, 1951 ELECTROMECHANICAL SCENT DISTRIBU- TION TO ACCOMPANY A MOTION PICTURE Emery I. Stern, Jackson Heights, N. Y. Application October 13, 1947, Serial No. 779,628

I 4 Claims. (01. 88-16) This invention relates to release and distribution of scents to accompany a motion picture, and it is an improvement on my co-pending application for Releasing and Synchronizing Methods and Means for Scents, Serial No. 561,751, filed November 3, 1944 now abandoned.

The main object of my invention is to provide a device whereby such action may be performed by electromechanical means in a different manner than disclosed in my said co-pending application.

My present invention also aims to provide means whereby a great variety of scents, and great variety of sequences, may be combined to accompany the showing of a motion picture, through a comparatively simple, easily operated, and still reliable means.

Other objects of this invention will appear as the specification of the same proceeds or will be pointed out therein.

In the drawings, forming a part of this specification and accompanying the same:

Fig. l is a diagram showing a preferred form of an electro mechanical scent selector device, according to this invention;

Fig. 2 is a semi-diagrammatic, partly sectional view of one of the scent distribution systems to be used with it;

Fig. 3 shows a portion of a travelling film in which perforations are provided for controlling the scent selection, and

Fig. 4 is a diagrammatic illustration of the device for using said film in the scent selector.

Referring now to the drawings more in detail, by characters of reference, in Fig. l the numeral 20 indicates a scent selector film, the same film also being indicated in Fig. 3, and, as will be explained hereinafter, said film operates in synchronism with a motion picture film, the showing of which is to be accompanied by release of appropriate scents.

Light sources 2|, 22 and 23 throw their beams on the scent selector film 20 but normally can not penetrate the same, said film being entirely opaque, in the present embodiment of my invention.

Three rows of holes, generally indicated by the numerals 24, 25 and 26, however, are provided in the scent selecting film 20, said holes being opposite to, and in line with, the respective light sources 2 '22 and 23, and it will be seen that any time a hole in a respective row will register with the respective light source, the light beam of the same may pass through said hole.

Three photo-electric relay switches, designated by the letters S, R, N, are arranged in registering 2 relation with the respective light sources 2|, 22 and 23, and, as will be explained presently, the first one, designated by the letter S, will serve to select a scent when a hole in row 24, for scents, in the film 20, passes opposite to the light source 2|, and, similarly, the photo-electric call R will operate to repeat said scent when it is desired, while the last photo-electric cell N, will operate to release a neutralizing agent, following the scent previously distributed, when such an action is desired. In Fig. 4 is shown, in a diagrammatic manner, the synchronized cooperation of a motion pic ture film 21 and the mentioned scent selecting film 20.

The numeral 28 indicates the feeding reel of the motion picture film, said film being unrolled in the direction of arrow 29, in a usual projector device (not shown), passing through the film gate 30, and operating, by its usual perforations, a sprocket disk 3|.

The scent selecting film is unwound from a reel 32, by the sprocket 33, which is driven from the sprocket 3| by a reduction device 34, so that preferably the speed of the scent selecting film 20 will be much slower than that of the motion picture film 21, but the two, obviously, will be entirely in synchronism.

Film 20, also, will pass through a guide device 35, and the three photo-electric cells S, R, N, pref erably are arranged at one side of said device, while at the other side of said guide device are arranged the three light sources 2|, '22 and 23'. The respective photo-electric cells and light sources are registering with one another, and registering openings are provided in the two sides of guide 35 to permit the light beam to pass therethrough and strike the respective photo-electric cell when a hole of its row will move between them.

Returning now to Fig. 1, when a hole 24 passes between the light source 2| and the photoelectric cell S, the light will operate on the device S, which acts as a relay switch for the circuit of the motor 38, said circuit generally being indicated by the numeral 31 and having any appropriate source of power, as at 38.

Upon an activation of the photo-electric cell or relay switch S, motor 36 will start, and, through a reducing gear 39, it will turn the cam disk 40, of course at a greatly reduced speed compared to the speed of the motor. Said cam disk may have one single cam extension or lobe 4|, and the arrangement of the device is such that, normally, said lobe will press at the inner end 42 of a lever 43, pivoted at 44, whereby the asoaesc 3 outer end 45 of said lever will be separated from an electrical contact 46. Said end 45 is electrically connected, of course in an insulated manner, to one branch 41 of the motor circuit, as indicated at 48, while the electrical contact 46 is connected to the other branch 49 of the said circuit, as indicated at 50.

As soon as the motor 36 starts operating and rotates cam disk 40, the lobe 4! will leave the lever 43, and the spring 5| will close the contacts 45 and 46, closing the motor circuit and keeping the same closed; The motor will run for a full rotation of the cam disk 40, that is, as long as the lobe 44 will again arrive to the lever end 42', will press the same downwardly, against the spring 5|, and will break the contacts 45 and 46. In this manner, it will be seen, the motor will be kept running forone rotation of the disk 40, even while the relay switch S may have closed its circuit only for a very short period of time while the respective hole '24 was passing in front of light source 2!.

In the present scent selecting system another,

much larger and slower moving, cam disk 52a is provided, which is driven at such greatly reduced speed by a reducing gear device, generally ingicated by the numeral 53, as will be unders d.

The purpose of this second, large and slow moving, cam disk 52 is to release a scent by a prearranged plan, as controlled through the holes in row 24 in the film or tape 20.

When arranging said plan, first the motion picture film 21 will be run all, keenly observed, and measured by any appropriate means, will how to those versed in this art, and various scenes and their times noted, where the distribution of certain scents in the audience will be desirable in order to enhance the impression and effect of those scenes.

After establishing the sequence and times of the scents, the respective holes 24 will be provided in the scent selecting film 20, by any appropriate means.

The scents in the present embodiment of the invention are arranged in appropriate containers 54 (Fig. 2) in liquid form, and will be vaporized and carried into pipes or ducts 55 when an air stream will be blown over them through vaporizing pipes 56, as it is well known in this art. Said vaporizing pipes are connected into compressed air pipe lines 51, which will have a substantially constant high pressure therein, being connected to the compressed air tank 58a. Tank 56a preferably is fed by several compressors 59a, so that the pressure in the whole compressed air system will be kept at a desired high level and as constant as possible.

Reducing and regulating valves 58 are provided in each vaporizing air pipe 56, and each pipe normally is closed by a valve 59, which, however, is connected to and operated by a solenoid 60. The solenoids are inserted into respective electric circuits 6| (Figs. 1 and 2), one branch 6la thereof being attached to the conductor line 62, which will lead to an appropriate source of power 63 for said solenoids, which may be the same as the source of power 38 for the motor 36, or may be another suitable source of electrical power. The other branch Nb of the solenoids 60 will be connected with respective contact sockets 64 in a switchboard 65.

A second switchboard 66 is also provided, hav- A plurality of electric switches, generally indicated by the numeral 69, are equidistantly arranged around the circumference of the cam disk 52 (Fig. 1). One contact 660. of said switches is connected to one of the respective upper contact sockets 61a in the upper switchboard 66, as by wires 69b, while the other contact 690 of the mentioned switches is connected into the return branch 10a of the power circuit 63 for the soleacids 60.

In the embodiment shown, there are thirty switches 69 around the cam disk 52, and there are thirty pairs of upper contact sockets 61 in the switchboard 66.

In the embodiment shown, there also is one more pair of contact sockets 610:, the purpose of which will be explained hereinafter.

Each switch 69 and the corresponding contact socket 67a is adapted to operate one scent, whereby this embodiment of the device is constructed for thirty scents, but, of course, devices may be constructed, on the principle herein disclosed, for less or more scents, as desired.

It is also to be observed that in Fig. 2 I show only eight scents, for the sake of cleamess of showing, while, of course, the compressed air and other .pipes or conduits there shown may be extended to accommodate thirty scent units 54, to correspond to Fig. l, as will be obvious.

It also will be observed that the contact points 69a in the thirty switches 69, normally are open, but, upon the operation of the photo-electric cell S, as described, and then the motor 36, gearing 53 and the large cam disk 52, the said disk will be moved, and its single short projection or cam lobe 52a will pass over the next adjacent switch 69a, closing the same for a short interval of time. The proportion of revolutions between the smaller cam disk 46 and the large cam disk 52, in this embodiment, will be arranged in such a manner, that the large cam disk 52 will rotate thirty times slower, that is, one full revolution of the cam disk 40 will correspond to /30 of a revolution of the large cam disk 52, so that it will be understood that cam projection 52a, for one revolution of the cam disk 40, will operate only one adjacent switch 69. Upon cam disk 40 completing one revolution, its projection or cam lobe 5| will again arrive to the lever 43 and will break the contact points 45 and 46, thereby stopping the movement of the motor 36 and the cam disk 52, after the same operated on one single switch 69, let us say 69d.

For the short period of time said switch was operated on (and then the next switch 69c, as shown in l ig. 1) it will be closed and thereby closes a solenoid circuit through the use of a respective contact socket 61a in switchboard 66, as will be shown presently.

In the lower switchboard 65, the contact sockets 64 correspond to the various scents, and they are connected to the respective solenoids, as has been explained hereinbefore.

After the scent sequence for a certain film to be shown has been established, and the scent control film 20 produced according to such sequence, the upper contacts 61 will be connected by respective wires 10 into corresponding sockets 64. So, for instance, the first pair of contact sockets 61, designated by the numeral 61b, and connected to said next switch 69c, has a lower socket, which, for indicating the sequence and number of such pairs in this embodiment, is designated by the numeral I, and, in the scent seq ence now to be used, is connected to the socket 010, in the lower switchboard, by the Jumper wire I0, and thereby completes the circuit of a certain solenoid 60b which operates a predetermined scent, as will be obvious.

On the other hand, the last switch 68d in the arrangement shown in Fig. 1, which is permanentl connected to the socket 2 in the upper switchboard 66, will in this arrangement be plugged into the socket 61d in the lower switchboard 65, whereby said switch will close a circuit for the solenoid 60d. controlling another scent.

In the manner now indicated, first the switches 09 to be used will be plugged into appropriate sockets 64 in the lower switchboard 55 to operate the required scents at the necessary moments, as will be obvious, and it will be seen that as the control film 20 travels, it will operate the photo-electric cells s for the respective scents at the respective moments, and therethrough the switches 69, whereby the respective solenoid circuits 6I will be closed, and the respective scents 54 released for a short period of time.

When a solenoid 60 opens its valve 59, the compressed air from conduits or pipes 51 will blow over the scent containers 54 and will vaporize and carry a predetermined amount of scent in a predetermined concentration in the conduits 55, and therethrough into the main scent pipe or duct 'II. Said main or duct Il may have a mixing device I2 inserted therein as well as an air suction device or fan I3, after which its contents proceeds into the auditorium, as indicated by the arrow I4. The final distribution of the scent in the auditorium may be performed in any appropriate manner, one of which has been described in my said co-pending application, Ser. No. 561,751.

As also has been explained in my said copending application, the air-scent mixture is to be diluted to a desired predetermined degree, as well as the speed of its emanation, and its temperature, are to be regulated so as to make it substantially imperceptible to the audience as by a change in the current of air, or in the temperature, its entry into the auditorium to be noticed only by the scent carried with it.

For this purpose additional air may be added into the conduits 55, the same being provided by an air pump device I5, and electrical heating devices I6, I1 and I8 may be inserted at appropriate places into said additional air currents. Further additional air may be allowed to enter into the system by the suction operation of the fan 13 in the main conduit II, as indicated at I9.

One purpose of fan I3, however, is to create suction at the vaporizing devices 54, 58, and prevent jamming there.

Obviously, all these air mixtures, pressures, speeds, etc., will be controlled by appropriate devices, well known in this art.

In some cases it is desired to have a certain scent kept released for a longer period than allowed by the short operation of the cam projection 52a, and in such cases, I provide means whereby the last released scent may be repeated and again released.

For this purpose I provide a stationary ring of insulating material I00, underneath and independent of the rotating cam disk 52, on which is a continuous contact ring IOI, and thirty individual contacts I02 corresponding to the thirty switches 08, and each being connected to one respective switch, as indicated at I00.

A contact I00 is carried by the cam disk 52 and it always will be bridging the individual contact I02 corresponding to the last activated switch 69 and the permanent contact ring IOI. Contact ring IN is connected to the photo-electric relay switch R, as at I05, said switch R being activated by the film 20 only in case the last distributed scent is to be repeated, and it will be seen that in such a case the circuit of the last activated solenoid will again be closed through the contact ring MI, and the individual contacts I02, and, obviously, the last released scent will be repeated.

In case any other scent is desired to be repeated than the last one, the same may simply be done by certain Jumper wire plugging on switchboard 66.

II for instance, in an example indicated in Fig. 1, when the cam lobe 52a arrives to the seventh switch 69, the same scent is to be released as was done through the first switch 592, then the respective upper socket 61b for said first switch will be plugged into the lower socket I corresponding to the seventh switch 69, and this plugging is done by the jumper wire I06.

Obviously, when the cam lobe 52a arrives to the seventh switch, it will close the same circuit, including sockets 61b and 510, as was the case for said first scent, and said scent will be repeated.

As has been mentioned in my said co-pending application, it may be desired to release a neutralizing agent after a scent, and for this operation appropriate holes 26 will be provided in the scent control film 20. When such a hole arrives to the photo-electric relay switch N, it will activate the same and thereby release directly a neutralizing agent, which is indicated at 5411 controlled by the solenoid 6011.

A socket 00 corresponds in the lower switch 55 to the solenoid 501i and is connected into the upper sockets Nb and 61a: and therethrough to the photo-electric relay switch N, as by the conductor 8|. The other branch 82 of the circuit of the photo-electric relay switch N is connected into the return line 10a of the power circuit 60. It will be seen that upon the activation of the photo-electric relay switch N, the neutralizing agent will be released for a moment from the container 541:.

With reference to the release of the scents into an auditorium, instead of providing tubes, pipes and ducts to carry them from a central place, obviously a number or scent containers may be arranged at strategic places and the scents released simultaneously, as desired, as by means described hereinbefore.

What I claim as new and want to protect by Letters Patent of the United States, is:

1. In a device to release scents to accompany the showing of a motion picture, a motion picture film driving member, a control film having photo-electrically responsive markings thereon, a second driving member for said control film, means for actuating both said driving members in synchronism, a plurality of scent-laden mediums normally confined, releasing means for each of said scent-laden mediums, a switchboard anel having a plurality of selector contact means corresponding in number to said releasing means, and control means for said panel all electrically interconnected, photo-electric means electrically connected to said control means, said photo-electric means energizable by said control film to actuate said control means to operate said releasing means through said switchboard panel contact means to release a selected scent-laden medium.

2. The structure of claim 1, said control means including supplementary means also energizable by said photo-electric means and control film for repeating the operation of a scent-releasing means.

3. The structure of claim 1, scent neutralizing means, said switchboard panel including an elec trical connection energizable by said photo-electric means and control film to actuate said scent neutralizing means.

4. In a device to release scents to accompany the showing of motion pictures, a motion picture film projector and a control member actuated thereby, a plurality of scent-laden mediums normally confined, releasing means for each of said scent-laden mediums, a switchboard panel having a plurality of selector contact means corresponding in number to said releasing means, control means for said panel all electrically interconnected, means for electrically connecting said selector contact means to selected ones of said scent releasing means, and means actuated by said control member to actuate said control means and energize said switchboard panel contact means to operate said selected scent releasing means in sequence, said control means comprising a motor, a rotatable disc 0perated thereby and a plurality of switches electrically connected to said switchboard panel contact means, said switches actuatable by said rotatable disc.


REFERENCES CITED The following references are of record in the file of this patent:


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U.S. Classification352/85, 341/13, 439/47, 472/57, 200/5.00R, 200/17.00R, 261/118, 200/14, 422/120
International ClassificationA63J5/00, G03B31/02
Cooperative ClassificationA63J2005/008, G03B31/02
European ClassificationG03B31/02