Audible signal valve knob with timer

1. An audible signal generating valve assembly and a cooperating, independently operable, timer assembly for a cooking vessel, comprising, in combination:

means located in said valve assembly for initiating and maintaining an audible signal at a preselected temperature of the contents of said cooking vessel;

a slide valve having a first position and a second position and generating a first audible signal in at least one of the first or second positions;

a controller adapted to engage the slide valve to move the slide valve from the first position to the second position and thereby interrupt the first audible signal;

said timer assembly including means for removably coupling said timer assembly to said valve assembly, and further including a switch and an actuator device for activating the switch and being coupled to the slide valve, the timer selectively programmable to run for a selected time period and generating a second signal at the expiration of the selected time period, the activation of the switch starting the timer running for the selected time period; and

wherein movement of the slide valve from the first position to the second position engages the actuator device to activate the switch.

2. An assembly as in claim 1

wherein the first audible signal is a whistle.

3. An assembly as in claim 1

wherein the second signal is a buzzer.

4. The valve assembly of claim 1 including at least one orifice arranged for passage of water vapor escaping from said heated contents of said cooking vessel and including means for closing said orifice and for engaging the timer actuator device to simultaneously activate the switch on movement of said slide valve from the first position to the second position.

5. The valve assembly of claim 1 wherein the valve assembly includes:

a supporting base removably secured to said cooking vessel, and wherein said supporting base includes;

a valve slide path with a valve slide supporting surface;

a pair of longitudinally extending slide supporting abutments;

a complimentary cam recess located at the first position of said valve slide;

biasing means for biasing said valve slide toward said slide valve supporting surface; and

a manually operable controller including a laterally extending stem portion arranged for operative attachment to said valve slide, and said stem portion further including a cam follower projecting laterally from said stem portion and arranged to slidably engage said camming groove located in the surface of said cam recess and arranged to guide said cam follower in a selected rotational and forward direction for alternative movement of said slide valve towards and away from said first position.

6. The valve assembly of claim 1 wherein said controller comprises a manually rotatable controller engageable with a cam follower, and wherein said cam follower is engageable with a cammed recess configured to convert rotatable motion to lateral motion and engage the slide valve to move the valve from the first to the second position.

7. The valve assembly of claim 1

wherein the second signal is a visual signal.

8. A method for using an assembly comprising:

a slide valve having a first position and a second position and generating a first signal in at least one of the first or second positions,

a controller adapted to engage the valve to move the valve from the first position to the second position, and

a timer having a switch and an actuator device for activating the switch and being coupled to the slide valve, the timer selectively programmable to run for a selected time period and generating a second signal at the expiration of the selected time period, the activation of the switch starting the timer running for the selected time period,

wherein movement of the slide valve from the first position to the second position engages the actuator device to activate the switch, the method comprising:

a. coupling the assembly on a cooking vessel

b. setting the timer for the selected time period

c. placing the valve in the first position

d. heating the cooking vessel to a pre-determined temperature whereby the first signal is generated, and

e. moving the valve from the first position to the second position, thereby stopping the first signal and simultaneously starting the timer running.

9. A method as in claim 8

wherein at least one of the first and second signals is an audible signal.

10. A method as in claim 9

wherein the audible signal is a whistle.