Timer for range top burner

Claim 2

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased outwardly to a (gas) fluid shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, a timer assembly in said valve knob having a frame as well as a main shaft carrying a setting dial at one end and an output cam at the other axially aligned in said knob, said timer assembly being so constructed that when the setting dial is rotated to a set position from a reference position it returns timingly to the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, a biased latch for latching the latchable member, the frame of the timer assembly being mounted in the knob for limited axial movement and having means for biasing the same outwardly with respect to the knob, the latchable member being in the path of inward axial movement as the dial is pressed inwardly for latching the poppet valve in its open position, said latch being in the path of rotational movement of the cam so that when the cam timingly rotates back to its reference position from a set position it trips the latch to cut off flow of the (gas) fluid.

Claim 3

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased axially to a fluid shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, the timer assembly mounted in said valve knob and having a frame as well as a setting dial and an output cam, said timer assembly being so constructed that when the setting dial is rotated to a set position from a reference position it returns timingly to the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, a biased latch for latching the latchable member, the frame of the timer assembly being mounted in the knob for limited axial movement with means for biasing the same outwardly, the latchable member being coupled to the frame for response to the inward movement of the frame for latching the poppet valve in open position, said latch being in the path of return movement of the cam so that when the cam timingly rotates back to its reference position from the set position it trips the latch to cut off flow of the (gas) fluid.

Claim 4

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased axially to a fluid shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, the timer assembly mounted in said valve knob and having a frame as well as a setting dial and an output cam, said timer assembly being so constructed that when the setting dial is rotated to a set position from a reference position it returns timingly to the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, a biased latch for latching the latchable member, the frame of the timer assembly being mounted in the knob for limited axial movement with means for biasing the same outwardly, the latchable member being coupled to the frame for response to the inward movement of the frame for latching the poppet valve in open position, said latch being in the path of return movement of the cam so that when the cam timingly rotates back to its reference position from the set position it trips the latch to cut off flow of the (gas) fluid.

Claim 5

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased axially to a (gas) fluid shutoff position, the combination comprisiNg a hollow valve knob having means for attachment to the shaft, a timer assembly mounted in the valve knob having a frame, setting dial means and an output cam, said timer assembly being so constructed that when the setting dial is rotated to a set position from a reference position it returns timingly to the reference position accompanied by operation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, a biased latch for latching the latchable member, said dial means being axially movable and having means for biasing the same outwardly, means responsive to axially inward movement manually applied to the dial means for pressing on the latchable member for latching the same to open the poppet valve, said latch being in the path of return movement of the output cam so that when the dial timingly rotates back to its reference position from the set position the latch is tripped for cutting off the flow of (gas) fluid.

Claim 6

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased axially to a (gas) fluid shutoff position, the combination comprisiNg a hollow valve knob having means for attachment to the shaft, a timer assembly mounted in the valve knob having a frame, setting dial means and an output cam, said timer assembly being so constructed that when the setting dial is rotated to a set position from a reference position it returns timingly to the reference position accompanied by operation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, a biased latch for latching the latchable member, said dial means being axially movable and having means for biasing the same outwardly, means responsive to axially inward movement manually applied to the dial means for pressing on the latchable member for latching the same to open the poppet valve, said latch being in the path of return movement of the output cam so that when the dial timingly rotates back to its reference position from the set position the latch is tripped for cutting off the flow of (gas) fluid.

Claim 7

In a timer for a range top burner or the like the combination comprising a throttle valve and a poppet valve for cutting off the fluid flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased axially to a (gas) fluid shutoff position, a hollow valve knob having means for attachment to the shaft for rotating the shaft from an off position when the knob is turned for manual throttling control of the (gas) fluid, a timer assembly mounted in the valve knob having a frame, setting dial means and an output cam, the setting dial being coaxially arranged in said knob and said timer assembly being so constructed that when the setting dial and cam are rotated to a set position from a reference position they return timingly to the reference position, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, means associated with the cam operated incident to setting the dial for latching the latchable member, and means operated incident to return to the reference position for automatically releasing the latchable member thereby to release the poppet valve for turning off the (gas) flow of fluid.

Claim 8

In a timer for a range top burner or the like the combination comprising a throttle valve and a poppet valve for cutting off the fluid flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased axially to a (gas) fluid shutoff position, a hollow valve knob having means for attachment to the shaft for rotating the shaft from an off position when the knob is turned for manual throttling control of the (gas) fluid, a timer assembly mounted in the valve knob having a frame, setting dial means and an output cam, the setting dial being coaxially arranged in said knob and said timer assembly being so constructed that when the setting dial and cam are rotated to a set position from a reference position they return timingly to the reference position, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, means associated with the cam operated incident to setting the dial for latching the latchable member, and means operated incident to return to the reference position for automatically releasing the latchable member thereby to release the poppet valve for turning off the (gas) flow of fluid.

Claim 9

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased axially to a fluid shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, a timer assembly in said valve knob having a frame, setting dial means and an output cam, said timer assembly being so constructed that when the setting knob is rotated to a set position from a reference position it returns timingly to the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, a biased latch for latching the latchable member, said dial means being axially movable and having means for biasing the same outwardly, means responsive to axially inward movement of the dial means for pressing the latchable member for latching the same to open the poppet valve, said latch being in the path of return movement of the cam so that when the cam timingly rotates back to its reference position from the set position, it trips the latch to cutoff flow of the (gas) fluid.

Claim 10

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the flow, the throttle valve having a rotatable shaft and the poppet valve having a stem freely fitted in the shaft and biased axially to a fluid shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, a timer assembly in said valve knob having a frame, setting dial means and an output cam, said timer assembly being so constructed that when the setting knob is rotated to a set position from a reference position it returns timingly to the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, a biased latch for latching the latchable member, said dial means being axially movable and having means for biasing the same outwardly, means responsive to axially inward movement of the dial means for pressing the latchable member for latching the same to open the poppet valve, said latch being in the path of return movement of the cam so that when the cam timingly rotates back to its reference position from the set position, it trips the latch to cutoff flow of the (gas) fluid.

Claim 11

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the fluid flow, the throttle valve having a rotatable shaft and the poppet valve having (the) a stem freely fitted in the shaft and biased outwardly to a (gas) fluid shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, a timer assembly mounted in the valve knob having a frame with a main shaft axially arranged therein, said main shaft having a setting dial at the forward end and a cam at the rear end, a spring for rotationally biasing the shaft into a rEference position, a sector gear on the shaft and a timing train driven thereby, said sector gear having a toothless sector for defining initial lost motion and said timing train including a clutch so that when the dial is rotated from the reference position past the region of lost motion to a set position the shaft tends to return timingly toward the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem, a biased latch for latching the latchable member, said frame being mounted for limited axial movement with respect to the knob and having means for biasing the same outwardly, the latchable member being in the path of axial movement of the cam so that when the dial is manually pressed inwardly the latchable member is moved into latched position accompanied by opening the pilot valve, said latch being arranged in the path of return movement of the cam so that when the cam timingly rotates back to its reference position from a set position it trips the latch to cutoff flow of the (gas) fluid.

Claim 12

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the fluid flow, the throttle valve having a rotatable shaft and the poppet valve having (the) a stem freely fitted in the shaft and biased outwardly to a (gas) fluid shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, a timer assembly mounted in the valve knob having a frame with a main shaft axially arranged therein, said main shaft having a setting dial at the forward end and a cam at the rear end, a spring for rotationally biasing the shaft into a rEference position, a sector gear on the shaft and a timing train driven thereby, said sector gear having a toothless sector for defining initial lost motion and said timing train including a clutch so that when the dial is rotated from the reference position past the region of lost motion to a set position the shaft tends to return timingly toward the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem, a biased latch for latching the latchable member, said frame being mounted for limited axial movement with respect to the knob and having means for biasing the same outwardly, the latchable member being in the path of axial movement of the cam so that when the dial is manually pressed inwardly the latchable member is moved into latched position accompanied by opening the pilot valve, said latch being arranged in the path of return movement of the cam so that when the cam timingly rotates back to its reference position from a set position it trips the latch to cutoff flow of the (gas) fluid.

Claim 13

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the fluid flow, the throttle valve having a rotatable shaft and the poppet valve having (the) a stem freely fitted in the shaft and biased outwardly to a shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, a timer assembly mounted in the valve knob having a frame with a main shaft axially arranged therein, said main shaft having a setting dial at the forward end and a cam at the rear end, a spring for biasing the shaft into a reference position, a sector gear on the shaft and a timing train driven thereby, said sector gear having a toothless sector for defining initial lost motion and said timing train including a clutch so that when the dial is rotated from the reference position past the region of lost motion to a set position, the shaft tends to return timingly toward the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, means associated with the cam operated incident to setting the dial for latching the latchable member, and means operated incident to return of the dial to the region of lost motion adjacent the reference position for releasing the latchable member thereby to release the poppet valve for turning off the (gas) flow of fluid.

Claim 14

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the fluid flow, the throttle valve having a rotatable shaft and the poppet valve having (the) a stem freely fitted in the shaft and biased outwardly to a shutoff position, the combination comprising a hollow valve knob having means for attachment to the shaft, a timer assembly mounted in the valve knob having a frame with a main shaft axially arranged therein, said main shaft having a setting dial at the forward end and a cam at the rear end, a spring for biasing the shaft into a reference position, a sector gear on the shaft and a timing train driven thereby, said sector gear having a toothless sector for defining initial lost motion and said timing train including a clutch so that when the dial is rotated from the reference position past the region of lost motion to a set position, the shaft tends to return timingly toward the reference position accompanied by rotation of the cam, an axially movable latchable member for engaging the tip of the stem to open the poppet valve, means associated with the cam operated incident to setting the dial for latching the latchable member, and means operated incident to return of the dial to the region of lost motion adjacent the reference position for releasing the latchable member thereby to release the poppet valve for turning off the (gas) flow of fluid.

Claim 15

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the fluid flow, the throttle valve having a rotatable shaft and the poppet having a stem freely fitted in the shaft and biased axially to a fluid shut off position, a valve knob having means for attachment to the shaft, a timer assembly mounted in the valve knob and having a biased setting dial which is rotatable with respect to the knob against the force of bias from a reference position to a time set position, means for coupling the timer assembly to the poppet valve so that the poppet valve is held open during the time that the timer dial is displaced from its reference position and closed when the timer dial is restored to its reference position after the timed interval to shutoff flow of (gas) fluid, the throttle valve and knob having a stop to define the (gas) fluid off position, said knob being rotatable from its off position in one direction, the timer setting dial being rotatable from its reference position in the opposite direction so that the torque required to rotate the timer setting dial is resisted by the stop associated with the knob and so that the knob remains stationary during the time that the timer dial is being manually set thereby permitting the timer dial and knob to be operated sequentially in that order by the single hand of the person using the range.

Claim 16

In a timer for a range top burner or the like having a throttle valve and a poppet valve for cutting off the fluid flow, the throttle valve having a rotatable shaft and the poppet having a stem freely fitted in the shaft and biased axially to a fluid shut off position, a valve knob having means for attachment to the shaft, a timer assembly mounted in the valve knob and having a biased setting dial which is rotatable with respect to the knob against the force of bias from a reference position to a time set position, means for coupling the timer assembly to the poppet valve so that the poppet valve is held open during the time that the timer dial is displaced from its reference position and closed when the timer dial is restored to its reference position after the timed interval to shutoff flow of (gas) fluid, the throttle valve and knob having a stop to define the (gas) fluid off position, said knob being rotatable from its off position in one direction, the timer setting dial being rotatable from its reference position in the opposite direction so that the torque required to rotate the timer setting dial is resisted by the stop associated with the knob and so that the knob remains stationary during the time that the timer dial is being manually set thereby permitting the timer dial and knob to be operated sequentially in that order by the single hand of the person using the range.