Sequential timing device

Abstract

Claims

2. IN A TIME SEQUENCE SWITCH FOR ACCOMPLISHING A PLURALITY OF TIMING SEQUENCES, A CYCLE SELECTION MEANS FOR SELECTING A PARTICULAR CYCLE STARTING POINT, SAID CYCLE SELECTION MEANS INCLUDING A DRIVE MOTOR DRIVING A SHAFT OF SAID TIME SEQUENCE SWITCH AT A CONSTANT SPEED, SAID DISPLACEMENT OF SAID SHAFT ESTABLISHING A CIRCUIT CONDITION WITHIN SAID CYCLE SELECTION MEANS, SAID CIRCUIT CONDITION DE-ENERGIZING SAID DRIVE MOTOR WHEN SAID SHAFT REACHES SAID PARTICULAR CYCLE STARTING POINT, AND MEANS TRANSMITTING SPACED TIME-CONTROLLED ELECTRICAL IMPULSES TO SAID DRIVE MOTOR THEREBY PERIODICALLY ACTUATING SAID DRIVE MOTOR SO AS TO INTERMITTENTLY DRIVE SAID SHAFT, SAID MEANS INCLUDING A TIMER MOTOR, SAID TIMER MOTOR DRIVING A FIRST MEANS, SAID FIRST MEANS ACTUATING SWITCH MEANS ENERGIZING SAID DRIVE MOTOR THEREBY ADVANCING SAID SHAFT AND A SECOND MEANS, SAID SECOND MEANS ACTUATING ANOTHER SWITCH MEANS TO KEEP SAID DRIVE MOTOR ENERGIZED UNTIL SAID SECOND MEANS REACHES A DETERMINED CONDITION WHICH DE-ENERGIZES SAID DRIVE MOTOR.
July 4, 1967 J, w s R 3,329,781 SEQUENTIAL TIMING DEVICE Filed July 6, 1965 INVENTOR JOSEPH E. W/SE"? ATTORNEY 3 $heets-$heet l July 4, 1967 J. E. WISER 3,329,781 SEQUENTIAL TIMING DEVICE Filed July 6, 1965 .3 Sheets-Sheet 2 INVENTOR JOSEPH E. WISE/i ATTORNEY July 4, 1967 J. E. WISER SEQUENTIAL TIMING DEVICE 3 Sheets-Sheet 3 Filed July 6, 1965 INVENTOR JOSEPH E. WISE/i ATTORNEY United States Patent 3,329,781 SEQUENTIAL TIMING DEVICE Joseph E. Wiser, Indianapolis, Ind., assignor to P. R. Mallory & Co., Inc., Indianapolis, Ind., a corporation of Delaware Filed July 6, 1965, Ser. No. 469,746 16 Claims. (Cl. 20038) The present invention relates to time sequence switches and more particularly to means and methods for providing a novel but simple mechanism for advancing a time sequence switch to any point of the cycle at a rapid rate and for using the rapid advance mechanism as the driving means for advancing the time sequence switch through the programmed timing cycle. A rapid advance mechanism of this type has wide application possibilities in a host of time sequence switches used in commercial, industrial, and domestic devices and appliances. Such an application would be found in the ordinary automatic washer used in homes. Accordingly, the present invention provides a novel, efficient and economical solution to the timing requirements of the aforementioned equipment applications. rapid advance mechanism to advance to fixed cycle points selected either manually by hand or manually by electrical means and automatically by means of control cams, electrical pushbutton-s and printed circuit board, electrical pushbuttons or rotary select switch and printed circuit board, or slide selector switch and printed circuit board. In all cases, replacement of the printed circuit board by control cams will give the same results. Also, electronic selector devices of capacitive or piezoelectric nature will provide control means. A practical feature of a time sequence switch utilizing the rapid advance mechanism of this invention is that the rapid advance drive motor is used to drive the time sequence switch through the rapid advance mechanism gear train, said motor being energized by a short duration controlled pulse generated by a cam-switch arrangement. This feature allows the elimination of a mechanical escapement mechanism driven by the timer motor and will allow the driving of a larger set of control cams since the driving mechanism can generate more torque than the contemporary timer motor. By accompanying drawing and specification, therefore, there will be disclosed the novel means and method whereby the present invention fulfills the required purpose. It is an object of the present invention, therefore, to provide a time sequence switch which can be rapidly advanced to any point of the cycle at a rapid rate by either manual or automatic means. A further object of the present invention is to provide a simple driving mechanism for advancing a time sequence switch or control device to any point of the cycle at a fast and constant speed rate. Another object of the present invention is to provide a driving mechanism which will have a positive stopping feature even though the drive motor will coast for a period after it is de-energized. Yet another object of this invention is to provide a means for advancing to fixed cycle points selected either manually by hand, manually by electrical pushbutton means, or automatically by means of control cams, electrical pushbuttons and printed circuit boards, electrical pushbuttons or rotary select switch and printed circuit boards, or slide selector switch and printed circuit board. 3,329,781 Patented July 4, 1967 Still another object of this invention is to provide a means whereby the rapid advance mechanism can drive the time sequence switch through a gear train and spring clutch, thereby eliminating the requirement for a high torque timer motor and a mechanical escapement mechanism to step the time sequence switch. The present invention, in another of its aspects, relates to novel features of the instrumentalities described herein for teaching the principal object of the invention and to the novel principles employed in the instrumentalities whether or not these features and principles may be used in the said object and/ or in the said field. Other objects of the invention and the nature thereof will become apparent from the following description considered in conjunction with the accompanying drawings and wherein like reference numbers describe elements of similar function therein and wherein the scope of the invention is determined rather from the dependent claims. For illustrative purposes the invention will be described in connection with the accompanying drawing in which: FIGURE 1 is a perspective view of a time sequence switch showing the rapid advance mechanism consisting of a drive motor, gear train, spring clutch, driving gear and drive shaft. FIGURE 2 is a side view of the time sequence switch showing the drive motor with the pinion gear on the motor shaft disengaged from the gear train of the rapid advance mechanism, a printed circuit board and wiper assembly mounted on the time sequence switch, a timer motor engaging the timing mechanism, and a switch which is activated by axial movement of the drive motor. FIGURE 3 is a side view of the drive motor and shaft with the pinion gear on the motor shaft engaging the first gear of the rapid advance mechanism gear train. FIGURE 4 is an exploded perspective of the drive shaft of the time sequence switch showing the drive gear and the spring clutch which is attached thereto. FIGURE 5 is an exploded perspective showing an optional method of staking the spring clutch to the bushing whichacts as a bearing for the time sequence switch drive shaft and drive gear. FIGURE 6 is a cross section view of the spring clutch and drive gear assembly, said assembly View being shown in FIGURE 4. FIGURE 7 is a side view of an optional design for the spring clutch and drive gear assembly to permit axial movement of the drive shaft. FIGURE 8 is a schematic of a cycle selection means showing a rotary select-or switch and a printed circuit board layout for selection of cycle starting point. FIGURE 9 is a schematic of a cycle selection means showing provisions for an automatic pushbutton selection of cycle, and an electrical pulsing means for advancement of the time sequence switch through the programmed cycle, said schematic being shown as an alternate approach to the cycle selection scheme shown in FIGURE 8. Generally speaking, thepresent invention provides a cycle selection means, including a driving means, for rapidly advancing a time sequence switch to a particular cycle starting point and electrical pulsing means, or a cam-switching means, for intermittently energizing said driving means to advance said time sequence switch through a programmed timing cycle. The driving means includes a drive motor and a coupling or linkage mechanism consisting of a gear means, or a plurality of gears, and a one-way clutch means for imparting rotational motion to a plurality of control cams which operates a plurality of control switches. The cycle selection means includes a means for establishing an initial circuit condition within the cycle selection means. The means for establishing an initial circuit condition may take the form 3 of any selector switch means, such as, a rotary selector switch or a pushbutton selector switch means. Referring now to the drawing, and particularly to the perspective view of FIGURE 1, the component parts of the rapid advance mechanism as applied to a time sequence switch can be visualized on conjunction with the following description. Metallic plate constitutes a main structure unit for the time sequence switch assembly. A solenoid action drive motor 11, hereinafter referred to as the drive motor or the rapid advance mechanism drive mot-or, is mounted to plate 10 by means of mounting studs on said motor and nuts 12. A pinion gear 13 on the axially movable rotor of the rapid advance drive motor 11 engages the first gear 14 of the rapid advance mechanism gear train. A pinion gear 15, not shown in FIGURE 1, mounted axially to the first gear 14 and rotatably fixed to the first gear 14 drives the first gear and pinion stage 16 which, in turn, drives the second gear and pinion stage 17. The second gear and pinion stage 17 drives an idler gear 18 which, in turn, imparts rotational motion to a drive gear 19 causing the spring clutch 20, which is afiixed to the gear 19 and wrapped around drive shaft 21, to tighten on the drive shaft 21 of the timer switch. The spring clutch 20 is a typical one-way clutch and will allow the drive shaft 21 to be turned manually, by hand, to position the time sequence switch. Mounting studs 22 are provided on the mounting plate 10 to facilitate the mounting of a printed circuit board 23 and wiper assembly 24, shown in FIG- URE 2, attached to the drive shaft 21 of the time sequence switch. An insulating board 25 is aflixed to the mounting plate 10 and constitutes a terminal board for terminals 26 which provide power and electrical signals to the motors and switches of the time sequence switch. A constant speed timer motor 27 is mounted to a second metallic mounting plate 28 by means of a mounting stud 29 and nut 30, said timer motor 27 provides a constant speed rotation to a timer cam 78 which will be discussed later. Also shown in FIGURE 1 are the control cams 31 which are old in the art as a means for activating control switches in the time sequence switch. Referring now to FIGURE 2, we see a holding switch 37 which is activated by the solenoid action of the rotor of the rapid advance mechanism drive motor 11 as it moves to allow pinion 13 to engage the first gear 14, said pinion 13 being shown disengaged from the first gear 14. The spring 38 provides the force necessary to disengage the pinion 13 and to open holding switch 37. Also shown in FIGURE 2 are the printed circuit board 23 and wiper assembly 24 which are discussed previously. Referring now to FIGURE 3 we see a side view of the rapid advance mechanism drive motor 11 with the pinion 13 on the rotor of said motor engaging the first gear 14 of the rapid advance mechanism gear train. The exploded perspective of FIGURE 4 of the drive shaft 21, bushing 39, gear 19 and spring clutch 20 assembly. Also shown are the retaining washer 40 and snap ring 41 necessary for retaining spring clutch 20 and the mounting plate 10 which is the basic mount for the assembly. As shown in the figure, spring clutch 20 is afiixed to the gear by means of loops 20' coiled around stake 42. The alternate method for attaching the spring to the bushing 39 and through the gear 19 is shown in FIGURE 5. This alternative spring clutch 43 is designed to go into a hole in the bushing 39 and to be held there by a spring clip 44. Referring now to FIGURE 6, we see a cross section view of the assembly shown in FIGURE 4. This view is provided for clarification purposes. Referring now to FIGURE 7, we see an optional design of a spring clutch assembly which will permit axial movement of the time sequence switch drive shaft 45 to two index positions maintained by index spring 46. The axial movement opens a switch to tie-energize the control circuitry. Referring now to FIGURE 8, we see a schematic showing a printed circuit rotary selector switch 49 which is comprised of a wiper assembly 50, a continuous circular conducting path 51, incremental conducting paths 52, 53, 54 and 55 respectively, all of which are concentric with the continuous conducting path 51, a concentric shaft 56 which is insulated from the wiper assembly 50 but which will turn the wiper assembly 50 to any desired location, and terminals 57 which facilitate electrical connection of the conductor paths to associated electrical contacts within the time sequence switch. The shaft 56 can be rotated by manually pulling in an axial direction, and then rotating to a desired location, said axial movement will activate line switch 58 which provides electrical power for the rapid advance mechanism drive motor 11 to turn the wiper arm 24 on the printed circuit board 23. The printed circuit board 23 shown in this figure has a continuous conducting path 59, a short conducting path 60, a medium length conducting path 62, a long conducting path 61, and an extra long conducting path 47. All of the conducting paths 59, 60, 61, 62 and 47 are concentric with the time sequence switch drive shaft 21. The wiper arm 24 has a contact 63 which is continuously in contact with the continuous conducting path 59, and two contacts 64 and 65 which contact the conducting paths 60, 61, 62 and 47 and are separated to bridge the gap between any two adjacent conducting paths. Also shown in FIGURE 8 is the auxiliary stop switch 66 which will open circuit the whole time sequence switch for emergency or other purposes, two indicating lights 67 and 68, and the necessary electrical terminals 69 for electrically interconnecting the printed circuit board 23 to other portions of the time sequence switch. Referring now to FIGURE 9, we see a schematic of the cycle selection means showing provisions for automatic selection of time sequence switch cycle, provisions for a fast constant speed visual selection of cycle, and an electrical pulsing means for an intermittent timed advance of the time sequence switch by the rapid advance mechanism drive motor 11. There is a pushbutton selector switch means 72, a manual-stop switch 73, a start switch 74, a linkage mechanism 75, and a second linkage mechanism 71 mechanically linking the pushbutton switch arrangement 72, and the manual-stop switch 73 and the start switch 74, all of said switches and linkage mechanisms are operated manually by the operator of the equipment utilizing the subject time sequence switch. In addition, there is a momentary switch 76 which is momentarily closed by the linkage mechanism 75, a holding switch 37 which is closed by the solenoid action of the drive motor 11, a pulse switch 77 which is closed by a first cam means, hereinafter referred to as the timer cam 78, which is driven by the timer motor 27, a second pulse switch 79 which is closed by a second cam means, hereinafter referred to as the sawtooth cam 80, which is driven by the advance mechanism drive motor 11, and line switch 81 which is operated by a control cam 82 in the time sequence switch. As shown in the figure, the automatic pushbutton approach utilizes a printed circuit board 83 which is comprised of continuous conducting path 84, incremental conducting paths 85, 86, 87, 88 and 89, numbered counterclockwise respectively, and a Wiper arm assembly which has a single contact 91 in contact with the continuous conducting path 84 and the two contacts 92 and 93 which will bridge across any two incremental conducting paths. The wiper arm assembly 90 is driven by the rapid advance mechanism drive motor 11. The pushbuttons in the pushbutton arrangement 72 are normally closed. With the above description in mind, and by making reference to the figures, the following analysis of operation will serve to convey the details of the present invention. As stated earlier, this invention provides a rapid advance mechanism for advancing a time sequence switch to a particular cycle starting point at a fast rate of speed and for using the rapid advance mechanism drive motor 11 to advance the time sequence switch through the programmed timing cycle. The rapid advance to the cycle selected can be accomplished automatically by electrical pushbutton, manually by operating a rotary selector switch, and manually by turning the drive shaft of the time sequence switch. Each of the methods of selecting a cycle and the method of using the rapid advance mechanism to step the time sequence switch will be discussed in the following paragraphs. The rapid advance to the cycle selected by the rotary selector switch 49 shown in FIGURE 8 will be discussed first. The operator of the equipment using the proposed timer switch will rotate the wiper assembly 50 of the rotary selector switch 49 to the desired cycle starting point. This rotation is accomplished by axially pulling the rotary selector switch shaft 56, said axial movement opening line switch 58 which provides power for the rapid advance mechanism drive motor 11.- For illustration purposes, the rotary selector switch 49 in FIGURE 8 is shown with incremental conducting path 52 open circuited. That is, incremental conducting paths 53, 54 and 55 are connected to the continuous conducting path 51 by the wiper'arm 50 and'through the continuous conducting path 51 to one of the two terminals on the rapid advance mechanism drive motor 11. The incremental conducting paths 53, 54 and 55 are also electrically connected to conducting paths on the printed circuit board 23 which determine the starting point for each cycle. Conducting path 53 on the rotary selector switch is connected to conducting path 47 on the printed circuit board, conducting path 54 on the rotary selector switch is connected to conducting path 61 on the printed circuit board, and conducting path 55 on the rotary selector switch is connected to conducting path 60 on the printed circuit board. Conducting path 52 which is shown open circuited, on the rotary selector switch, is connected to conductor path 62 on the printed circuit board. With the electrical connections made as described, the rapid advance mechanism drive motor 11 will be energized by the power source and will drive through the gear linkage mechanism or coupling means shown in FIGURE 1 to turn the wiper arm assembly 24 on the printed circuit board 23 and will continue to turn until the wiper arm assembly 24 contact 64 is on conducting path 62 and contact 65 is on the insulating board. At that instant, the rapid advance mechanism drive motor 11 will be open circuited because conducting path 62 on the printed circuit board is connected to conducting path 52 on the rotary selector switch 49 which was purposely open circuited by the operator and the selected cycle can start. The second mode of operation to be discussed is the automatic pushbutton cycle selection shown in FIGURE 9. The operator of the equipment utilizing the time sequence switch will select a particular cycle by pushing one of the pushbuttons 70 of the pushbutton selector switch means 72. The pushbuttons 70 are normally closed and are electrically connected to incremental conducting paths 85, 86, 87, 88 and 89 on the printed circuit board 83, said conducting paths being of different length to determine the starting point of each cycle. By pushing one of the pushbuttons 70, the linkage mechanism 75 is moved to close the momentary switch 76 which momentarily supplies power to the rapid advance mechanism drive motor 11 which drives the wiper arm assembly 90 through drive shaft 21 indicated by centerline in FIGURE 9. The solenoid action of the rapid advance drive motor 11 closes holding switch 37 which will stay closed as long as the motor is energized. In this illustration, shown in FIGURE 9, the pushbutton switch connected to incremental conducting path 87 was opened to start the rapid advance drive motor 11. Since incremental conducting path 87 is open circuited to one side of the rapid advance mechanism drive motor 11, the rapid advance mechanism drive motor will continue to turn the wiper arm assembly 90 until the contact 92 is on conducting path 87 and contact 93 is on the insulated portion of the printed circuit board 83 and the motor is de-energized. At that point, the cycle represented by conducting path 87 can begin and all that is required is for the operator to push the start switch 74. By pushing start switch 74, switch 94 will be opened to prevent any accidental fee-d to the control mechanism during the cycle and switch 95 will be closed to supply current to the timer motor 27. The time sequence switch may be stopped by pushing the manual-stop switch 73 which will act through linkage 71 thereby causing the start switch 74 to open circuit the timer motor 27. The next mode of operation to be discussed is where the operator pushes the manual-stop switch 73 to energize the rapid advance mechanism drive motor 11 which will drive the time sequence switch through all of the cycles until the manual-stop switch 73 is released. This mode of operation may be used to select a particular cycle by observing the rotation of a dial on the time sequence switch drive shaft 21 and by stopping at the selected position. The next mode of operation to be discussed can be observed in FIGURE 9 and is referred to as an intermittent timed advance of the time sequence switch through the programmed timing cycle. This novel approach to step advancing a time sequence switch eliminates the need for a mechanical escapement mechanism which is given by the timer motor. The intermittent timed advance is accomplished by the timer motor 27 driving a timer cam 78 which momentarily closes switch 77 which allows current to flow through the rapid advance mechanism drive motor 11 which drives the sawtooth cam 80 through the rapid advance mechanism gear means and spring clutch means shown in FIGURE 1 to close switch 79 which keeps current flowing through the rapid advance mechanism drive motor 11 until the sawtooth advances to open switch 79. This cam-switching combination provides a time-controlled eleotrical'impulse which will step the time sequence switch through the programmed timing cycle. Obviously this approach to driving the time sequence switch depends on the solenoid action of the rotor to eliminate overstepping of the rapid advance mechanism after the drive motor 11 is deenergized. The last mode of operation to be discussed is where the operator of the equipment utilizing the time sequence switch selects a particular cycle by manually turning the drive shaft 21 of the time sequence switch to the required location. This feature is facilitated by use of the spring clutch 20 which will allow manual adjustment of the drive shaft 21. The time sequence'switch with the novel rapid advance mechanism of the present invention, as hereinabove described in one of its embodiments, is merely illustrative and not exhaustive in scope. Since many widely different embodiments of the invention may be made without departing from the scope thereof, it is intended that all matter contained in the above description and shown in the accompanying drawing shall be interposed as illustrative and not in a limiting sense. What is claimed is: 1. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor, said drive motor driving a gear means, said gear means imparting constant speed rotational motion to a camshaft of said time sequence switch, said camshaft supporting and rotating a plurality of control cams, said control cams operating a plurality of control switches, said rotational motion establishing a circuit condition within said cycle selection means, said circuit condition de-energizing said drive motor when said particular cycle starting point is obtained, ing a switch to energize said drive motor, said camshaft rotating a second cam means, said second cam means closing a switch to keep said drive motor energized until said second cam means is driven a given and precise amount, thereby advancing said camshaft through a programmed timing cycle. 2. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor driving a shaft of said time sequence switch at a constant speed, said displacement of said shaft establishing a circuit condition within said cycle selection means, said circuit condition de-energizing said drive motor when said shaft reaches said particular cycle starting point, and means transmitting spaced time-controlled electrical impulses to said drive motor thereby periodically actuating said drive motor so as to intermittently drive said shaft, said means including a timer motor, said timer motor driving a first means, said first means actuating switch means energizing said drive motor thereby advancing said shaft and a second means, said second means actuating another switch means to keep said drive motor energized until said second means reaches a determined condition which de-energizes said drive motor. 3. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor driving a camshaft of said time sequence switch at a constant speed, said displacement of said camshaft establishing a circuit condition within said cycle selection means, said circuit condition de-energizing said drive motor when said camshaft reaches said particular cycle starting point, and means transmitting spaced time-controlled electrical impulses to said drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said means including a timer motor, said timer motor driving a first cam means, said first cam means actuating switch means energizing said drive motor thereby advancing said camshaft carrying a second cam means, said second cam means actuating another switch means to keep said drive motor energized until said second cam means reaches a determined arcuate displacement. 4. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor engaging with and rotatably driving a gear means, said gear means driving a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft at a constant speed, said displacement of said camshaft establishing a circuit condition within said cycle selection means, said circuit condition de-energizing said drive motor when said camshaft reaches said particular cycle starting point, and means transmitting spaced time-controlled electrical impulses to said drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said means including a timer motor, said timer motor driving a first cam means, said first cam means actuating switch means energizing said drive motor thereby advancing said camshaft carrying a second cam means, said second cam means actuating another switch means to keep said drive motor energized until said second cam means reaches a determined arcuate displacement. 5. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor engaging with and rotatably driving a gear means, said gear means connected to a one-way clutch means, said clutch means carried by a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft through said clutch means at a constant speed, said displacement of said camshaft establishing a circuit condition within said cycle selection means, said circuit condition energizing said drive motor until said camshaft reaches said particular cycle starting point, and means transmitting spaced time-controlled electrical impulses to said drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said means including a timer motor, said timer motor driving a first cam means, said first cam means actuating switch means energizing said drive motor thereby advancing said camshaft carrying a second cam means, said second cam means actuating another switch means to keep said drive motor energized until said second cam means reaches a determined arcuate displacement, thereby intermittently advancing said camshaft through a programmed timing cycle. 6. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor engaging with and rotatably driving a gear means, said gear means connected to a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft at a constant speed, said displacement of said camshaft establishing a circuit condition within said cycle selection means, said circuit condition de-energizing said drive motor when said camshaft reaches said particular cycle starting point, and cam-switching means transmitting spaced time-controlled electrical impulses to said drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said cam-switching means including a timer motor, said timer motor driving a first cam means, said first cam means having rise and fall contours actuating switch means riding thereon energizing said drive motor thereby advancing said camshaft carrying a second cam means having rise and fall contours, said second cam means actuating another switch means riding thereon to keep said drive motor energized until said second cam means is driven through a determined arcuate displacement. 7. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor engaging with and rotatably driving a gear means, said gear means connected to a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft at a constant speed, a selector switch means electrically connected to a printed circuit board carried by said time sequence switch, a wiper arm assembly riding on electrically conductive paths of said board and driven by said camshaft, said selector switch means and said conductive paths on said board establishing a circuit condition within said cycle selection means, said circuit condition de-energizing said drive motor when said camshaft reaches said particular cycle starting point selected by said selector switch, camswitching means transmitting spaced time-controlled electrical impulses to said drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said cam-switching means including a timer motor, said time motor driving a first cam means, said first cam means having rise and fall contours actuating switch means riding thereon energizing said drive motor thereby advancing said camshaft carrying a second cam means having rise and fall contours, said second cam means actuating another switch means riding thereon to keep said drive motor energized until said second cam means is driven through a determined arcuate displacement. 8. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor engaging with and rotatably driving a gear means, said gear means connected to a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft at a constant speed, a selector switch means electrically connected to a printed circuit board carried by said time sequence switch, a wiper arm assembly carried by said camshaft riding on electrically conductive paths of said board, said selector switch means and said conductive paths on said board establishing a circuit condition within said cycle selection means when said selector switch is actuated, said circuit condition energizing said drive motor until said camshaft reaches said particular starting point selected by said selector switch, a cam-switching means transmitting spaced timecontrolled electrical impulses to said drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said cam-switching means including a timer motor, said timer motor driving a first cam means, said first cam means having rise and fall cont-ours actuating switch means riding thereon energizing said drive motor thereby advancing said camshaft carrying a second cam means having rise and fall contours, said second cam means actuating another switch means riding thereon to keep said drive motor energized until said second cam means is driven through a determined arcuate displacement. 9. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor having rotor means displaced from the stator by bias means so that when said motor is energized said rotor means is displaced to a determined position with respect to said stator, said drive motor engaging with and rotatably driving a gear means after displacement of said rotor means, said gear means connected to a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft at a constant speed, a push-button selector switch electrically connected to a printed circuit board carried by said time sequence switch, a wiper arm assembly carried by said camshaft riding on electrically conductive paths of said board, said selector switch means and said conductive paths on said board establishing a circuit condition within said cycle selection means when a push-button is actuated, said circuit condition de-energizing said drive motor when said camshaft reaches said particular starting point selected by said push-button selector switch, a cam-switching means transmitting spaced time-controlled electrical impulses to said drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said cam-switching means including a timer motor, said timer motor driving a first cam means, said first cam means having rise and fall contours actuating switch means riding thereon energizing said drive motor thereby advancing said camshaft carrying a second cam means having rise and fall contours, said second cam means actuating another switch means riding thereon to keep said drive motor energized until said second cam means is driven through a determined arcuate displacement. 10. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a shaded pole drive motor having rotor means axially displaced from the stator by bias means so that when said motor is energized said rotor means is displaced to a position of minimum reluctance with respect to said stator, said drive motor engaging with and rotatably driving a gear means after axial displacement of said rotor means, said gear means connected to a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft at a constant speed, a push-button selector switch electrically connected to a printed circuit board carried by said time sequence switch, a wiper arm assembly carried by said camshaft riding on electrically conductive paths of said board, said selector switch means and said conductive paths on said board establishing a circuit condition within said cycle selection means when said selector switch is actuated, said circuit condition deenergizing said shaded-pole drive motor when said camshaft reaches said particular starting point selected by said push-button selector switch, a cam-switching means transmitting spaced time-controlled electrical impulses to said shaded p'ole drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said cam-switching means including a timer motor, said timer motor driving a first cam means, said first cam means having rise and fall contours actuating switch means riding thereon energizing said drive motor thereby advancing said camshaft carrying a second cam means having rise and fall contours, said second cam means actuating another switch means riding thereon to keep said drive motor energized until said second cam means is driven through a determined arcuate displacement. 11. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor driving a camshaft at a constant speed, a selector switch electrically connected to a printed circuit board carried by said time sequence switch, a wiper arm assembly carried by said camshaft riding on electrically conductive paths of said board, said selector switch means and said conductive paths on said board establishing a circuit condition within said cycle selection means when said selector switch is actuated, said circuit condition dc-energizing said drive motor when said camshaft reaches said particular starting point selected by said selector switch, and a cam-switching means transmitting spaced time-controlled electrical impulses to said drive motor thereby periodically activating said drive motor so as to intermittently drive said camshaft, said cam-switching means including a timer motor, said timer motor driving a first cam means, said first cam means having rise and fall contours actuating switch means riding thereon energizing said drive motor thereby advancing said camshaft carrying a second cam means having rise and fall contours, said second cam means actuating another switch means riding thereon to keep said drive motor energized until said second cam means is driven through a determined arcuate displacement. 12. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive motor having rotor means displaced from the stator by bias means so that when said motor is energized said rot-or means is displaced to a determined position with respect to said stator, said drive motor engaging with and rotatably driving a gear means after displacement of said rotor means, said gear means connected to a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft at a constant speed, and selector switch means activating said drive motor until said camshaft reaches said particular starting point selected by said cycle selection means. 13. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a shaded pole drive motor having rotor means axially displaced from the stator by bias means so that when said motor is energized said rotor means is displaced to a position of minimum reluctance with respect to said stator, said drive motor engaging with and rotatably driving a gear means after axial dis placement of said rotor means, said gear means connected to a one-way clutch means, said clutch means carried by a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft through said clutch means at a 11 constant speed, and selector switch means activating said shaded pole drive motor until said camshaft reaches said particular starting point selected by said cycle selection means. 14. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a shaded pole drive motor having rotor means axially displaced from the stator by bias means so that when said motor is energized said rotor means is displaced to a position of minimum reluctance with respect to said stator, said drive motor engaging with and rotatably driving a gear means after axial displacement of said rotor means, said gear means connected to a one-way clutch means, said clutch means carried by a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft through said clutch means at a constant speed, and selector switch means including a printed circuit board and a wiper assembly carried by another shaft and displaceable therewith riding on electrically conductive paths on said board, displacement of said wiper arm on said conductive paths activating said shaded pole drive motor until said camshaft reaches said particular starting point selected on said selector switch. 15. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a drive mot-or engaging with and rotatably driving a gear means, said gear means connected to a one-way clutch means, said clutch means carried by a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft through said clutch means at a constant speed, selector switch means including a printed circuit board and a wiper assembly carried by another shaft and displaceable therewith riding on electrically conductive paths on said board, displacement of said 12 wiper arm on said conductive paths activating said drive motor until said camshaft reaches said particular starting point selected on said selector switch, and means thereafter intermittently driving said camshaft. 16. In a time sequence switch for accomplishing a plurality of timing sequences, a cycle selection means for selecting a particular cycle starting point, said cycle selection means including a shaded pole drive motor having rotor means axially displaced from the stator by bias means so that when said motor is energized said rotor means is displaced to a position of minimum reluctance with respect to said stator, said drive motor engaging with and rotatably driving a gear means after axial displacement of said rotor means, said gear means connected to a one-way clutch means, said clutch means carried by a camshaft of said time sequence switch so that rotational displacement of said gear means rotatably displaces said camshaft through said clutch means at a constant speed, selector switch means including a printed circuit board and a wiper assembly carried by another shaft and displaceable therewith riding on electrically conductive paths on said board, displacement of said wiper arm on said conductive paths activating said shaded .pole drive motor until said camshaft reache said particular starting point selected on said selector switch, and means thereafter inter-mittently driving said camshaft. References Cited UNITED STATES PATENTS 3,033,999 5/1964 Anderson 30714l.4 3,151,257 9/1964 Anderson 30=7--141.4 3,188,504 6/1965 Anderson 307--141.4 3,248,575 4/1966 Bowman 307141.4 BERNARD A. GILHEANY, Primary Examiner. G. J. MAIER, H. E. SPRINGBORN, Assistant Examiners.

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    US-3424920-AJanuary 28, 1969Maytag CoAutomatic control circuit
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