Abstract: A timing apparatus including a timer, a solenoid, a toggle switch, and an adapter plate for mounting to the valve control knob of a pizza oven, the adapter plate being provided with a detent at a given point on the periphery thereof. The knob is spring biased in a rotational direction toward the "on" position on the knob. An electrical timer is provided to energize a solenoid at a preset time duration, with the solenoid rod being physically coupled to a pivotable actuating arm, the free end of which is positioned for engagement with the detent of the knob with the knob in the "off" position, the plate being retained at that position against the force of the coil spring. A toggle switch is in electrical circuit relation with the timer, with the toggle thereof physically positioned in operative relation a member projecting from the actuating arm, such that actuation of the toggle from a first position to the second under force of the projection deenergizes the circuit between the timer and the solenoid.

Abstract: A push button member (10) is mounted to be moved longitudinally between a first position (FIG. 1A) and a second position (FIG. 1B). The push button member includes a cam surface (16) for selectively camming an electrical contact engaging surface (18) and a hold surface (48) past a follower member (32) as the push button member is moved from the first position to the second position. In the second position, the electrical contact engaging surface urges electrical leaf spring contacts (20) into a closed conducting relationship. The spring contacts remain in the conducting relationship until a radially greater extending cam surface (52) of a timing cam (50) engages the follower member moving it to the release position. In the release position, a spring (12) biases the push button member from the second position back to the first position allowing the electrical contacts to open.

Abstract: A programmer timer (10) having motor driven cams (61, 64, 62, 66) for operating electrical switching mechanisms (102, 116, 144, 138, 126). The motor comprises a pair of spaced stator plates (24, 26) with a coil (34) and permanent magnet rotor (36) therebetween, received in a walled chamber (28) in the timer housing. Motor reduction gears (44) drive a shaft (48) for driving the ratchet wheels (72, 68) and rotary cams. The motor, gear train cams and electrical switching mechanisms are contained in a single integral housing (12). Separate concentric fast and slow ratchet wheels (72, 68) are driven by a single eccentric driven pawl (14). The center of rotation of the eccentric is positioned so that drive pawl contacts the ratchet wheel at an angle at least 10.degree. greater than a tangent at the contact point, for all eccentric positions, to provide ratchet wheel advance in the event of reverse rotation of the eccentric.

Abstract: Apparatus for switching alternating current from a power source to a load for substantially all of one selected half-cycle, but not before at least one full cycle after the apparatus receives an operator command to switch the current, includes a mechanical switch for commanding the apparatus at an arbitrary time to switch the current. Electrical control devices produce a control output during a portion of the selected half-cycle. A second switch device, such as an SCR, responsive to the control output switches the current to the load during the selected half-cycle. The control output is turned off before the end of the half-cycle and is not produced again until the mechanical switch is released and provides another command to switch the current.

Abstract: An automatically controlled electric circuit interrupting device for controlling electric power supplied to the heating elements of kiln furnaces responsive to parallel input stimuli.

Abstract: A timer switch comprises a cam member of a generally disc shape having a cam surface at its periphery. The cam surface is stepped to provide a depressed portion and a shoulder portion adjacent thereto. The cam surface has a notch formed in the shoulder portion and opening to one side of the cam member. The cam member is operatively connected to a motor for rotation. A shaft is mounted on a casing for rotation about and displacement along the axis thereof. The cam member is fixedly mounted on the shaft for rotation therewith. An electrical switching means comprises a pair of first and second contact plates of a resilient material. The first contact plate is biased into sliding engagement with the cam surface. The second contact plate is biased normally into engagement with the first contact plate for energizing the motor to rotate the cam member. Upon depression of the first contact plate into the depressed portion the second contact plate engages the shoulder portion to de-energize the motor.

Abstract: An electromechanical timer arrangement includes a rotatable cam having a cam surface for actuating an associated switch. An inhibit member is movable between an active position and an idle position. In its active position, the member engages the switch and prevents cam actuation of the switch. In its idle position, the member permits normal cam actuation of the switch. In controlling a dishwasher the active and idle positions are user-selected non-heated and heated drying cycles and the switch controls energization of the heater. The cam surface is contoured to close the switch for heated drying. Moving the member to its active position opens the switch, regardless of the cam position, for non-heated drying.

Abstract: Timing apparatus for controlling the ON-OFF operation of a lamp or appliance. The timing apparatus is plugged into an electric wall receptacle to energize an internal synchronous motor that turns a time dial with setting pins thereon. The pins control the opening and closing of internal switch means for the lamp or appliance. The apparatus is relatively small, and is simple to manufacture, assemble and service.

Abstract: A periodical switching device has adjustable periodic ON durations and has rapid on, off transitions. A swinging member rides on a rotating cam. An operation member controlled by the cam and by the swinging member turns a switch on when the cam moves the operation member and turns the switch off when the cam moves the swinging member to release the operation member. An adjusting member changes position of the swinging member to vary its point and time of initial contact with the cam to selectively control release of the operation member which turns OFF the switch. A feeding device advances the adjusting means to 100 percent conduction when the adjusting device is moved to select about 83 percent or more conduction. An old setting-clearing device moves the operation member relatively to the swinging member so that the members follow the newly set durations immediately upon beginning new cycles.

Abstract: A stop start fixed cycle sequence timer is started at variable intervals by an adjustable automatic reset timer. This reset timer includes a clutch and resets when the clutch is disengaged. The cycling timer includes a clutch cam and cam follower which disengages and reengages the clutch while the cycling timer is going through its cycle.

Abstract: A time delay type of switch actuating mechanism is shown that can be assembled for either an "on delay" or "off delay" operation. A pair of contact carriers are mounted for linear motion, and a pivoted rocker member is joined between them for coordinating their movements. The rocker member has a lost motion connection with each contact carrier, and a catch is provided to restrain movement of the rocker and contact carriers until a timer performs a timing function. At the end of the timing interval the catch is released to permit a loaded spring to move the contact carriers and rocker to complete a switching function that is time delayed.

Abstract: The timer is adapted to be attached to a toggle light switch and comprises a body having a trip slide mounted in the body, with the slide having means for receiving and engaging the switch handle for tripping same to operate the lights. Spring means is provided in the body engageable with the slide for urging the slide to turn the lights off. When the slide is moved to compress the spring the lights are turned on. With the lights on, a latch carried by the slide engages the body to maintain the slide latched with the spring compressed. Fluid responsive timing means, located within the body, is engageable with the latch to operate and release the latch from engagement with the body after expiration of a predetermined time interval. Thereafter the compressed spring means moves the slide in a direction to trip the switch handle, thus turning the lights off.

Abstract: An electrical switch construction having an electrical switch provided with different operating conditions, the construction having a timer moved actuator operatively associated with the switch for causing the switch to be repetitively in one condition thereof a certain percentage of a certain increment of time and in another condition thereof for the remainder of the certain increment of time. The actuator is adapted for selecting the amount of the certain percentage of the certain increment of time within certain limits.

Abstract: A switch articulating device in combination with a modified conventional timer, the device including a bistable auxiliary switch lever connected to a switch engaging shuttle bracket, the switch lever and the bracket being retained in a housing adapted for installation over a wall switch. The conventional mechanical timer is mounted on the exterior of the housing and is modified to provide a timer shaft attached to a cam and extending into the interior of the housing. The cam is aligned to oppose one end of rocker arm, which at the other end articulates, through a push plate, a bellcrank attached to the switch lever. In this manner the switch lever can be either articulated by the timer or can be manually controlled to operate the circuit.

Abstract: The follower tip of the switch operating bell-crank lever can ride on the large diameter of the axially movable, rotatably driven cam or on axial movement of the cam can drop onto the smaller diameter of the cam to close one switch and, upon further axial movement, the follower can move further in to a pseudo inner diameter to close a second switch. The lever acts to prevent return axial movement of the cam until the cam notch is aligned with the follower and the follower no longer interferes with axial movement.

Abstract: A continuous repeat cycle timer in which the on period is externally adjustable. The beginning of the on period is fixed, being started by a cam follower dropping into a notch in the periphery of a cam. The end of the on period is determined by axial movement of a second cam which releases a latch. The point of axial latch releasing movement is set by an adjusting cam which is rotatable by an external knob. The cam shaft for the operating cams extends through the knob and indicates the progress of the time cycle.

Abstract: A multiple switch automatic reset timer in which the switches are located in the back of the timer and have operators angularly spaced about a main bearing axis. A clutch operator is also angularly spaced from the switch operators. A spring return timing gear on the main bearing axis drives a spring tensioner also carried on the main bearing axis. This stores power in the spring which is released at the timed-out point for driving a cam wheel carried on the main bearing axis. This actuates the switch operators and also releases the clutch allowing the timing gear to reset. The cam wheel is maintained in the timed-out position by a latch engaging the spring tensioner. This latch is released by a solenoid operated wheel carried on the main bearing axis. This wheel may also operate the clutch and one or all of the switches. The wheel configuration determines the type of action given by the timer. Provision is made for on delay, off delay, interval, instantaneous switch operation and many other combinations.