Alarm generator

Claim 2

An alarm generator adapted to be located on a premises to be protected against the occurrence of a plurality of events, and supervised at a point remote from the premises, comprising means for producing at least one code signal for transmission to the remote point, a rotatably mounted code wheel programmed to cause said producing means to produce a predetermined code signal for each revolution of said code wheel, a motor for rotating said code wheel, a plurality of switching means for coupling power to said motor, a plurality of event inputs each providing an enabling voltage in response to occurrence of one of the plurality of events, said switching means being respectively coupled to said plurality of event inputs and each being responsive to the presence of the associated enabling voltage to couple the power to said motor, a plurality of control mechanisms respectively coupled to said plurality of switching means and operatively coupled to said motor, each of said control mechanisms having means responsive to a predetermined rotation of said motor to operate said switching means to stop said motor, whereby said code wheel is caused to rotate a number of revolutions corresponding to the predetermined rotation of said motor, and reset means for causing said switching means to deliver power to said motor, each of said control mechanisms having further means responsive to a further predetermined rotation of said motor to stop said motor, whereby said code wheel is caused to rotate a further number of revolutions corresponding to the further predetermined rotation of said motor.

Claim 3

The alarm generator of claim 1, wherein the premises are to be protected against four events, and wherein there are four switching means, four event inputs and four control mechanisms.

Claim 4

The alarm generator of claim 1, wherein said producing means includes a McCullough switch.

Claim 5

The alarm generator of claim 1, and further comprising a plurality of holding means associated with said switching means for maintaining said switching means operative to couple power to said motor for said predetermined rotation of said motor despite termination of the enabling voltage.

Claim 6

the alarm generator of claim 1, wherein said control mechanisms are ganged together.

Claim 7

The alarm generator of claim 1, further comprising a further event input to receive an enabling voltage in the presence of a further event, said reset means including means responsive to an enabling voltage at said further event input to operate said switching means and cause power to be supplied to said motor to cause a predetermined number of revolutions of said code wheel.

Claim 8

An alarm generator adapted to be located on a premises to be protected against the occurrence of a plurality of events, and supervised at a point remote from the premises, comprising means for producing at least one code signal for transmission to the remote point, a rotatably mounted code wheel programmed to cause said producing means to produce a pre-determined code signal for each revolution of said code wheel, a motor for rotating said code wheel, a plurality of first switching means each having an input coupled to a power source and first and second outputs, said first switching means having an initial condition in which said input is coupled to said first output and decoupled from said second output, a plurality of event inputs each providing an enabling voltage in response to occurrence of one of the plurality of events, said plurality of first switching means being respectively coupled to said plurality of event inputs and each being responsive to the presence oF the associated enabling voltage to cause said input to be coupled to said second output and decoupled from said first output, a plurality of second switching means respectively associated with said plurality of first switching means and each having an output coupled to said motor and first and second inputs respectively coupled to the outputs of said first switching means, said second switching means having an initial condition in which said output thereof is decoupled from said first input and is coupled to said second input to deliver power to said motor by way of the second output of said first switching means and the second input of said second switching means, a plurality of control mechanisms respectively coupled to said plurality of second switching means and operatively coupled to said motor, each of said control mechanisms having means responsive to a predetermined rotation of said motor to decouple said output of said second switching means from said second input to stop said motor and to couple said output thereof to said first input, whereby said code wheel is caused to rotate a number of revolutions corresponding to the predetermined rotation of said motor, and reset means for returning said first switching means to the initial condition thereof to deliver power to said motor by way of the first output of said first switching means and the first input of said second switching means, each of said control mechanisms having further means responsive to a further predetermined rotation of said motor to return the associated second switching means to the initial condition thereof and thereby stop said motor, whereby said code wheel is caused to rotate a further number of revolutions corresponding to the further predetermined rotation of said motor.

Claim 9

An alarm generator adapted to be located on a premises to be protected against the occurrence of a plurality of events, and supervised at a point remote from the premises, comprising means for producing at least one code signal for transmission to the remote point, a rotatably mounted code wheel programmed to cause said producing means to produce a pre-determined code signal for each revolution of said code wheel, a motor for rotating said code wheel, a plurality of first switching means each having an input coupled to a power source and first and second outputs, said first switching means having an initial condition in which said input is coupled to said first output and decoupled from said second output, a plurality of event inputs each providing an enabling voltage in response to occurrence of one of the plurality of events, said plurality of first switching means being respectively coupled to said plurality of event inputs and each being responsive to the presence oF the associated enabling voltage to cause said input to be coupled to said second output and decoupled from said first output, a plurality of second switching means respectively associated with said plurality of first switching means and each having an output coupled to said motor and first and second inputs respectively coupled to the outputs of said first switching means, said second switching means having an initial condition in which said output thereof is decoupled from said first input and is coupled to said second input to deliver power to said motor by way of the second output of said first switching means and the second input of said second switching means, a plurality of control mechanisms respectively coupled to said plurality of second switching means and operatively coupled to said motor, each of said control mechanisms having means responsive to a predetermined rotation of said motor to decouple said output of said second switching means from said second input to stop said motor and to couple said output thereof to said first input, whereby said code wheel is caused to rotate a number of revolutions corresponding to the predetermined rotation of said motor, and reset means for returning said first switching means to the initial condition thereof to deliver power to said motor by way of the first output of said first switching means and the first input of said second switching means, each of said control mechanisms having further means responsive to a further predetermined rotation of said motor to return the associated second switching means to the initial condition thereof and thereby stop said motor, whereby said code wheel is caused to rotate a further number of revolutions corresponding to the further predetermined rotation of said motor.

Claim 10

The alarm generator of claim 7, wherein each of said first switching means includes a relay having a movable contact corresponding to said input and two stationary contacts corresponding to said first and second outputs.

Claim 11

The alarm generator of claim 7, and further comprising a plurality of further switching means respectively associated with at least some of said first switching means and being responsive to the occurrence of an event to maintain the input and the second output of said first switching means coupled after termination of the associated enabling voltage.

Claim 12

An alarm generator adapted to be located on a premises to be protected against the occurrence of a plurality of events, and supervised at a point remote from the premises, comprising means for producing at least one code signal for transmission to the remote point, a rotatably mounted code wheel programmed to cause said producing means to produce a predetermined code signal for each revolution of said code wheel, a motor for rotating said code wheel, a plurality of switching means each having a first contact coupled to a power source and second and third contacts, said switching means having an initial condition in which said first contact is connected to said second contact and is disconnected from said third contact, a plurality of event inputs each providing an enabling voltage in response to occurrence of one of the plurality of events, said plurality of switching means being respectively coupled to said plurality of event inputs and each being responsive to the presence of the associated enabling voltage to cause said first contact to be connected to said third contact and to be disconnected from said second contact, a plurality of cam operated switches respectively associated with said plurality of switching means and each having a fourth contact coupled to said motor and fifth and sixth contacts respectively coupled to the second and third contacts of said switching means, said cam operated switches having an initial condition in which said fourth contact thereof is disconnected from said fifth contact and is connected to said sixth contact to deliver power to said motor by way of said third and sixth contacts, a stack of a plurality of Cams respectively coupled to said plurality of cam operated switches and operatively coupled to said motor, each of said cams having a portion responsive to a predetermined rotation of said motor to disconnect said fourth contact from said sixth contact to stop said motor and to connect said fourth contact to said fifth contact, whereby said code wheel is caused to rotate a number of revolutions corresponding to the predetermined rotation of said motor, and reset means for returning said switch means to the initial condition thereof to couple power to said motor by way of said second and fifth contacts, each of said cam means having a further portion thereon responsive to a further predetermined rotation of said motor to return the associated cam operated switch to the initial condition thereof and thereby stop said motor, whereby said code wheel is caused to rotate a further number of revolutions corresponding to the further predetermined rotation of said motor.

Claim 13

An alarm generator adapted to be located on a premises to be protected against the occurrence of a plurality of events, and supervised at a point remote from the premises, comprising means for producing at least one code signal for transmission to the remote point, a rotatably mounted code wheel programmed to cause said producing means to produce a predetermined code signal for each revolution of said code wheel, a motor for rotating said code wheel, a plurality of switching means each having a first contact coupled to a power source and second and third contacts, said switching means having an initial condition in which said first contact is connected to said second contact and is disconnected from said third contact, a plurality of event inputs each providing an enabling voltage in response to occurrence of one of the plurality of events, said plurality of switching means being respectively coupled to said plurality of event inputs and each being responsive to the presence of the associated enabling voltage to cause said first contact to be connected to said third contact and to be disconnected from said second contact, a plurality of cam operated switches respectively associated with said plurality of switching means and each having a fourth contact coupled to said motor and fifth and sixth contacts respectively coupled to the second and third contacts of said switching means, said cam operated switches having an initial condition in which said fourth contact thereof is disconnected from said fifth contact and is connected to said sixth contact to deliver power to said motor by way of said third and sixth contacts, a stack of a plurality of Cams respectively coupled to said plurality of cam operated switches and operatively coupled to said motor, each of said cams having a portion responsive to a predetermined rotation of said motor to disconnect said fourth contact from said sixth contact to stop said motor and to connect said fourth contact to said fifth contact, whereby said code wheel is caused to rotate a number of revolutions corresponding to the predetermined rotation of said motor, and reset means for returning said switch means to the initial condition thereof to couple power to said motor by way of said second and fifth contacts, each of said cam means having a further portion thereon responsive to a further predetermined rotation of said motor to return the associated cam operated switch to the initial condition thereof and thereby stop said motor, whereby said code wheel is caused to rotate a further number of revolutions corresponding to the further predetermined rotation of said motor.

Claim 14

The alarm generator of claim 10, wherein said cams are ganged together.