US3594077A — Multiple projector system with single sound source

Claim 1

Independent Claim 429 words

A multiple projector system comprising in combination: a sound-slide master projector including optical means for projecting slides, one by one, sound means for reproducing sound recorded on record carriers, each of said record carriers being associated with a respective one of said slides to constitute a presentation unit, and advance mechanism for successively moving presentation units into position for simultaneous projection and reproduction respectively; a slave projector including optical means for projecting pictorial messages, one by one, and advance mechanism for successively moving said pictorial messages into pOsition for projection; and control means controlling said master projector and slave projector, said control means sequentially operating the master projector simultaneously to project and reproduce from the respective presentation unit, then operating the master projector after a first predetermined period of time to discontinue projection but to continue sound reproduction by the master projector and substantially simultaneously operating the slave projector to project a pictorial message during the continued reproduction of sound by the master projector, then after a second predetermined time period of sound reproduction operating the advance mechanism of the master projector to move a second presentation unit into position for projection and sound reproduction respectively, and also the advance mechanism of the slave projector to move a second pictorial message into position for projection, said control means including a first switch means having a first and second switching position, second switch means controlling the first switch means, said first switch means in the first switching position, upon connection of the master projector to a source of current, closing energizing circuits for the optical means and the sound reproducing means of the master projector, said master projector after a first predetermined time interval, operating the second switch means to close the energizing circuits for moving the first switch means from the first switching position into the second switching position, the first switch means in said second switching position disconnecting the optical means of the master projector but leaving connected its sound reproducing means and also connecting the optical means of the slave projector to effect projection by said master projector, said second switch means after a second predetermined time interval being operated by the master projector for closing the energizing circuits to disconnect the sound reproducing means of the master projector and the optical means of the slave projector and also activate the advance mechanisms of the master projector and the slave projector for advancing respectively another presentation unit in the master projector and another pictorial message in the slave projector into positions for projection and sound reproduction respectively.

Claim 2

Dependent Claim 429 words

A multiple projector system comprising in combination: a sound-slide master projector including optical means for projecting slides, one by one, sound means for reproducing sound recorded on record carriers, each of said record carriers being associated with a respective one of said slides to constitute a presentation unit, and advance mechanism for successively moving presentation units into position for simultaneous projection and reproduction respectively; a slave projector including optical means for projecting pictorial messages, one by one, and advance mechanism for successively moving said pictorial messages into pOsition for projection; and control means controlling said master projector and slave projector, said control means sequentially operating the master projector simultaneously to project and reproduce from the respective presentation unit, then operating the master projector after a first predetermined period of time to discontinue projection but to continue sound reproduction by the master projector and substantially simultaneously operating the slave projector to project a pictorial message during the continued reproduction of sound by the master projector, then after a second predetermined time period of sound reproduction operating the advance mechanism of the master projector to move a second presentation unit into position for projection and sound reproduction respectively, and also the advance mechanism of the slave projector to move a second pictorial message into position for projection, said control means including a first switch means having a first and second switching position, second switch means controlling the first switch means, said first switch means in the first switching position, upon connection of the master projector to a source of current, closing energizing circuits for the optical means and the sound reproducing means of the master projector, said master projector after a first predetermined time interval, operating the second switch means to close the energizing circuits for moving the first switch means from the first switching position into the second switching position, the first switch means in said second switching position disconnecting the optical means of the master projector but leaving connected its sound reproducing means and also connecting the optical means of the slave projector to effect projection by said master projector, said second switch means after a second predetermined time interval being operated by the master projector for closing the energizing circuits to disconnect the sound reproducing means of the master projector and the optical means of the slave projector and also activate the advance mechanisms of the master projector and the slave projector for advancing respectively another presentation unit in the master projector and another pictorial message in the slave projector into positions for projection and sound reproduction respectively.

Claim 3

Dependent Claim 73 words

The multiple projector system according to claim 1 and comprising a second slave projector including optical means for projecting pictorial messages, one by one, said control means activating said second slave projector to project a first pictorial message for a predetermined period of time during reproduction of sound by the master projector and then activating the advance mechanism of the second slave projector to move a second pictorial message into position for projection.

Claim 4

Dependent Claim 43 words

The multiple projector system according to claim 2 wherein said control means control said slave projectors so that the first slave projector is deactivated for projecting a pictorial message prior to the activation of the second slave projector for projecting a pictorial message.

Claim 5

Dependent Claim 98 words

The multiple projector system according to claim 1 wherein said first switch means comprises a stepping switch means having a first stepping position and a second stepping position, said second switch means moving said stepping switch means from the first stepping position into the second stepping position at the end of said first predetermined time interval, and reset means for restoring the stepping switch means to its first switching position, said second switch means at the end of said second predetermined time interval energizing said reset means for restoring the stepping switch means to the first switching position.

Claim 6

Dependent Claim 174 words

A multiple projector system according to claim 1 wherein said second switch means comprises a first and a second stationary switch contact connected to said energizing circuits and a movable switch contact successively and alternately engageable with said stationary swiTch contacts, said movable switch contact being moved by the master projector at a predetermined rate of speed toward said stationary switch contacts for successive and alternating engagement therewith, engagement of the movable switch contact with the first stationary switch contact connecting the energizing circuits for discontinuing projection but continuing sound reproduction by the master projector and also for activating the slave projector for projection, and engagement of the movable switch contact with the second stationary switch contact connecting the energizing circuits for discontinuing sound reproduction by the master projector and projection by the slave projector, activating the advance mechanism of the master projector for advancing another presentation unit into position for projection and sound reproduction respectively, and activating the advance mechanism of the slave projector for advancing another pictorial message into position for projection.

Claim 7

Dependent Claim 84 words

The multiple projector system according to claim 5 and comprising a plurality of cartridges, each housing the slide and the associated sound record carrier of a presentation unit, said cartridges being movable in the master projector one by one, into projection and sound reproduction position by the advance mechanism of the mater projector upon activation of said mechanism, each of said cartridges adjustably supporting said stationary switch contacts, the positions of said switch contacts in reference to each other controlling said predetermined time intervals.

Claim 8

Dependent Claim 340 words

The multiple projector system according to claim 1 and further comprising a second slave projector including optical means for projecting pictorial messages, one by one, and advance mechanism for successively advancing said pictorial messages into projection, said control means comprising a first switch means having a first, a second and a third switching position, second switch means controlling the first switch means, said first switch means in the first switching position, upon connection of the master projector to a source of current, closing energizing circuits for the optical means and the sound reproducing means of the master projector, said master projector after a first predetermined time interval, operating the second switch means for closing the energizing circuits for moving the first switch means from the first switching position into the second switching position, the first switch means in said second switching position disconnecting the optical means of the mater projector but leaving connected its sound reproducing means and also connecting the optical means of the first slave projector to effect projection by said projector, said second switch means after a second predetermined time interval being operated by the master projector for moving the first switch means from the second switching position into the third switching position, movement of the first switch means into said third switching position closing the energizing circuits for disconnecting the optical means of the first slave projector and connecting the optical means of the second slave projector, and after a third predetermined period of time being operated by the master projector for closing the energizing circuits to disconnect the sound reproducing means of the master projector and the optical means of the second slave projector, to activate the advance mechanism of the master projector for advancing another presentation unit into position for projection and sound reproduction respectively, to activate the advance mechanism of the first slave projector for advancing another pictorial message into position for projection and to activate the advance mechanism of the second slave projector for advancing another pictorial message into position for projection.

Claim 9

Dependent Claim 45 words

The multiple projector system according to claim 1 and comprising a motion picture type second slave projector, said control means being programmed to limit maximum projection time by said motion picture projectOr to the period of time during which the master projector is reproducing sound.

Claim 10

Dependent Claim 33 words

The multiple projector system according to claim 8 wherein said control means are programmed for intermittently projecting pictorial messages during said period of time during which sound is reproduced by the master projector.

Claim 11

Dependent Claim 438 words

A multiple projector system comprising in combination: a sound slide master projector for playing back for a predetermined total period of time and projecting respectively a succession of presentation units each composed of a slide and a sound record carrier; a first slave projector for projecting a succession of slides; automatic cycling means controlling the master projector and the slave projector, said cycling means being programmed: a. first to activate the master projector for playing back and projecting a presentation unit; b. then to discontinue projection by the master projector after a predetermined fraction of said total period of time while continuing playback and to activate substantially simultaneously the first slave projector for projection; c. then to discontinue playback by the master projector and projection by the first slave projector at the end of said predetermined total period of time; d. then to advance the master projector for projection and playback of another presentation unit and the slave projector for projection of another slide; a second slave projector including an optical means and mechanism for projecting motion picture film; a motion picture film having lengthwise alternating picture frame sections and opaque sections, said film being adapted to be transported and projected by said second slave projector; starting switch means included in a circuit connected to said second slave projector, closing of said switch means energizing said circuit for starting running of the second slave projector; light-sensitive switch means; time-delay switch means connected to said circuit, said delay switch means being connected in a control circuit with said light-sensitive switch means such that the delay time of the delay switch means is started by the light-sensitive switch means when the latter receives light from the second slave projector, said delay switch means at the end of the delay time opening said circuit; and bypass circuit means controlled by the light-sensitive switch means to bypass the opening of the circuit by the delay switch means when and while the light-sensitive switch means receive light, whereby upon initially placing an opaque film section in position for projection by the master projector and operating said starting switch means the second slave projector starts transport of the film, but the light-sensitive switch means remain inactive until the next succeeding picture frame section reaches the projection position whereupon projection starts, activation of the light-sensitive switch means by the light now received from the projector starting the delay by the delay switch means, said delay switch means becoming effective to open the energizing circuit in the second slave projector to stop running of the same when the next opaque film section reaches the projection position.

Claim 12

Dependent Claim 438 words

A multiple projector system comprising in combination: a sound slide master projector for playing back for a predetermined total period of time and projecting respectively a succession of presentation units each composed of a slide and a sound record carrier; a first slave projector for projecting a succession of slides; automatic cycling means controlling the master projector and the slave projector, said cycling means being programmed: a. first to activate the master projector for playing back and projecting a presentation unit; b. then to discontinue projection by the master projector after a predetermined fraction of said total period of time while continuing playback and to activate substantially simultaneously the first slave projector for projection; c. then to discontinue playback by the master projector and projection by the first slave projector at the end of said predetermined total period of time; d. then to advance the master projector for projection and playback of another presentation unit and the slave projector for projection of another slide; a second slave projector including an optical means and mechanism for projecting motion picture film; a motion picture film having lengthwise alternating picture frame sections and opaque sections, said film being adapted to be transported and projected by said second slave projector; starting switch means included in a circuit connected to said second slave projector, closing of said switch means energizing said circuit for starting running of the second slave projector; light-sensitive switch means; time-delay switch means connected to said circuit, said delay switch means being connected in a control circuit with said light-sensitive switch means such that the delay time of the delay switch means is started by the light-sensitive switch means when the latter receives light from the second slave projector, said delay switch means at the end of the delay time opening said circuit; and bypass circuit means controlled by the light-sensitive switch means to bypass the opening of the circuit by the delay switch means when and while the light-sensitive switch means receive light, whereby upon initially placing an opaque film section in position for projection by the master projector and operating said starting switch means the second slave projector starts transport of the film, but the light-sensitive switch means remain inactive until the next succeeding picture frame section reaches the projection position whereupon projection starts, activation of the light-sensitive switch means by the light now received from the projector starting the delay by the delay switch means, said delay switch means becoming effective to open the energizing circuit in the second slave projector to stop running of the same when the next opaque film section reaches the projection position.

Claim 13

Dependent Claim 56 words

The cycling system according to claim 10 wherein said light-sensitive switch means comprises a photoelectric relay, the state of energization of said relay controlling said bypass circuit means, and a light-deviating means deflecting light from the second slave projector to said photoelectric relay for energizing the same, energization of the relay activating the delay switch means.

Claim 14

Dependent Claim 38 words

The cycling system according to claim 11 wherein said light-deviating means is a beamsplitter placed in the light beam projection path of the second projector to deflect part of the light of said beam to the photoelectric relay.

Claim 15

Dependent Claim 80 words

The cycling system according to claim 10 wherein said time-delay switch means comprises a temperature-sensitive switch means haviNg normally closed switch contacts included in the energizing circuit of the projector, said temperature-sensitive switch means including heating means connected in circuit with the light-sensitive switch means, said heating means being activated by the light-sensitive switch means when light from the projector impinges upon the same, activation of the heating means causing opening of the switch contacts thereby opening said energizing circuit.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-07-19	1975-01-18	1975-07-20	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-07-19	1979-01-18	1979-07-20	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-07-19	1983-01-18	1983-07-20	$7700.00	Window Closed / Lapsed

Multiple projector system with single sound source

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag