US2677259A - Automatic control of laundry washing machines and the like - Google Patents
Automatic control of laundry washing machines and the like Download PDFInfo
- Publication number
- US2677259A US2677259A US245207A US24520751A US2677259A US 2677259 A US2677259 A US 2677259A US 245207 A US245207 A US 245207A US 24520751 A US24520751 A US 24520751A US 2677259 A US2677259 A US 2677259A
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- United States
- Prior art keywords
- contact
- card
- circuit
- control
- relay
- Prior art date
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- Expired - Lifetime
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-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/08—Control circuits or arrangements thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/06—Timing arrangements
Definitions
- This invention relates to automatic controls and automatic mechanism for laundry washing or other machinesor plant in which it is necessary to deliver predeterminedquantities of liquids at predetermined times, and the invention is more particularly concerned with electrically opcrated control apparatus employing a rotary electric switch adapted to establish and disestablish electric circuits for performing the various operations.
- the controlcard is preferablymounted on the cylindrical surface of adrum and the drum is mounted to rotate on a horizontal axis and is intermittently driven by a pawl and ratchet means through suitable reduction gearm
- the gears are driven by a ratchet and pawl mechathe pawl being pivoted to or formed in one with the spindle of a bevel gear.
- a further object of the present invention is to provide improved control card driving means wh reby the'card may be reset to zero position automatically at the end of the washing .cycle.
- the invention in the automatic-control of lalmdry washing machines or The invention also consists in the provision of means for impartingimpulses to the so'lenoidat the end of the washing cycle :for resetting the control card to zero position.
- Such impulses may be set up by providing the solenoid with trembler contacts (adapted to "make and br ak the circuit to the solenoid-coil).
- the solenoid coil is adapted to have impulses imparted thereto from electric pulsating means or make and break devices which-are associated with a time motor, a meter for hot'and/or cold water and a soap solution-meter, or meters for anyother supplies required and by the 'trembler malre-and-break device.
- the card is provided with slots :and'apertures according-to-theoperation desired'through which contact fingers make contact to complete various circuits.
- the card is removably mounted on the drum so that it may be replaced by another card having adifferent cycle of operations.
- controlmeans-according to the invention may be located :in a control room or compartment remote from the washing machine or it may be located in a sealedfcasing on or adjacent the washing machine.
- Figure 1- is 'aflowdiagram'of alaundry washing plant with the automaticcontrol according to the invention.
- Figure 2 is a schematic or block diagram of the'control according tothe invention.
- Figure 3 is a diagrammatic view to a larger scale illustrating the improved driving arrangement for the'control card drum.
- the relay A On depressing start button -3 .the relay A is energized and closes-the holding contact A1 and also starts the time motor-G which is preferably a synchronous motor.
- the motor Gdrivesits pulsatoror make-andbreak G1 andthus imparts impulses to the sole noid coil T, the current flowing through contacts Q1, R1, D2 which are normally closed.
- the ratchet solenoid T is thus intermittently energized and actuates the pawl ill and ratchet I! and the control card drum 4 is rotated by a step-by-step movement through the spur gear i2.
- the drum is provided with a gauze covering 411 with which a common return finger lb engages.
- the relay B When the wash cycle finger makes contact through a slot 5a in the control card I3 the relay B is energized. This relay controls contacts B1, B2 and B3, opening B1 and B3, and closing B2. The closing of contact B2 energizes relay C which controls contacts C1, C2 and thus contacts C1, C2 are closed. Contact C1 closes a retaining circuit for relay C.
- Contact Q1 opens the circuit to the water meter pulsator M1 so that the water meter drive to the card drum is stopped.
- the card When the predetermined amount of solution has been delivered, the card will interrupt the circuit through the finger l de-energizing relay Q, closing contact Q1 and opening contacts Q-z and Q3 thereby cutting out the solution pulsator M: and again completing the circuit to the time motor pulsator G1 so that the time motor G takes over the drive of the card drum 3. At the same time opening of contact Q3 causes the solution valve 24 to close.
- relay B causes contacts B1 and B3 to close and contact B2 to open.
- the closing of contact B3 energizes relay D thereby closing contact D1 and D3 and opening contact D2.
- the opening of contact D2 interrupts the normal time pulse circuit including pulsator G1, while the closing of contact D3 completes a circuit to the relay through a contact T1.
- the solenoid T incorporates a trembler circuit which is controlled by the normally closed contact T1 comprising a fixed contact 40 on bracket il and a moving contact 42 mounted on an extension l3 of the pawl element It.
- the card drum 4 will thus stop immediately the wash cycle finger 5 enters the wash cycle slot and the card drum will thus be in the correct position to start a fresh cycle which will commence when start button 3 is depressed.
- the pulsators G1, M1 and M2 comprise pairs of contact elements one of which is operated by an eccentric 32, 33, 34, respectively, driven by the time motor G, the water meter 20 and the solution meter 26 respectively.
- a complete wash cycle has not been described as such may include a series of washes, a series of rinses and other items in known manner all of which are controlled by appropriate slots in the card l3 and contact fingers co-operating therewith.
- the improved control is such that the operator is only required to load and unload the washing machine as the whole process including the return or" the control drum is automatic, it only being necessary to start the process by the pressing of the start button.
- An automatic control for a machine or plant in which it is necessary to operate valves to deliver predetermined quantities of liquids at predetermined times and having a rotary control card switch means to establish controlling circuits according to a predetermined formula, wherein the drive for the control card is efiected through a single one way drive means intermittently actuated by a solenoid to which impulses are transmitted alternately through a circuit controlled by a time motor, and a circuit controlled by a meter through which the liquid flows, means being provided for disestablishing the circuit inappropriate to the prevailing conditions.
- An automatic control for laundry washing machines having a rotary control card switch means adapted to establish controlling circuits according to a predetermined formula, wherein the drive for the control card is efiected through a single one way drive means intermittently actuated by a solenoid to which impulses are trans mitted alternately through a circuit controlled by a time motor, a circuit controlled by water meter, and a circuit controlled by a solution meter, means being provided for disestablish- 6 ing the circuit or circuits inappropriate to the prevailing conditions.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Control Of Washing Machine And Dryer (AREA)
Description
May 4, T954 5. WOODWARD ETAL AUTOMATIC CONTROL OF LAUNDRY WASHING MACHINES AND THE LIKE 3 Sheets-Sheet 1 Filed Sept. 5, 1951 M iy 4, 1954 s. WOODWARD ETAL 2,677,259
AUTOMATIC NDRY WASHING CONTROL OF LAU MACHINES AND THE LIKE Filed Sept. 5 1951 3 Sheets-Sheet 2 STOP 11in) elzfbol s 5. N 0 0 d0!) mci May 4, 1954 s. WOODWARD ETAL AUTOMATIC CONTROL OF LAUNDRY WASHING MACHINES AND THE LIKE 3 Sheets-Sheet 3 Filed Sept. 5 1951 li t/06151131 5 5N0 ociwal ci/ Patented May 4, 1954- UNITED ATEN T OFFICE AUTOMATIC CONTROL OF LAUNDRY WASH- ING MACHINES AND THE LIKE Application September 5, 1951, Serial No. 245,207
Claims priority, application Great Britain September 6, 1950 6 Claims.
This invention relates to automatic controls and automatic mechanism for laundry washing or other machinesor plant in which it is necessary to deliver predeterminedquantities of liquids at predetermined times, and the invention is more particularly concerned with electrically opcrated control apparatus employing a rotary electric switch adapted to establish and disestablish electric circuits for performing the various operations.
For convenience the invention will be described hereinafter by way of example with reference to laundry washing machines.
In British patent specification l lo. 5T9,697, there is described an automatic control for laundry washing machines of the above type in which-the electric switch comprising rotary control card is adapted for alternate drive by a time motor and through the agency of flow meters for washing'wa'ter and soap solutions but in such case the drive incorporated transmission gearing including free wheel clutch and circuit which is established at theend of the washing cycle.
The controlcard is preferablymounted on the cylindrical surface of adrum and the drum is mounted to rotate on a horizontal axis and is intermittently driven by a pawl and ratchet means through suitable reduction gearm The gears are driven by a ratchet and pawl mechathe pawl being pivoted to or formed in one with the spindle of a bevel gear. An object of the present invention is to provide improved and simplified driving means wherebysuch gearis unnecessary.
A drawback of the arrangementreferred to in the previous paragraphs was that-on completion of a washing cycle it was necessary for the operat No move the control-card to zero position, and
a further object of the present invention is to provide improved control card driving means wh reby the'card may be reset to zero position automatically at the end of the washing .cycle.
Accordingto the present invention, in the automatic-control of lalmdry washing machines or The invention also consists in the provision of means for impartingimpulses to the so'lenoidat the end of the washing cycle :for resetting the control card to zero position. Such impulses may be set up by providing the solenoid with trembler contacts (adapted to "make and br ak the circuit to the solenoid-coil).
The solenoid coil is adapted to have impulses imparted thereto from electric pulsating means or make and break devices which-are associated with a time motor, a meter for hot'and/or cold water and a soap solution-meter, or meters for anyother supplies required and by the 'trembler malre-and-break device.
The control carol orswitch means is secured on a drum-mounted for'rotation such drum having a metal gauze-surface =WhiOh'iS connected to a source of current by:a contact finger at one end of the drum.
The card is provided with slots :and'apertures according-to-theoperation desired'through which contact fingers make contact to complete various circuits.
The card is removably mounted on the drum so that it may be replaced by another card having adifferent cycle of operations.
The controlmeans-according to the invention may be located :in a control room or compartment remote from the washing machine or it may be located in a sealedfcasing on or adjacent the washing machine.
In the accompanying drawings:
Figure 1-is 'aflowdiagram'of alaundry washing plant with the automaticcontrol according to the invention.
Figure 2 is a schematic or block diagram of the'control according tothe invention.
Figure 3 is a diagrammatic view to a larger scale illustrating the improved driving arrangement for the'control card drum.
Referring now to FigureQ in whichthe various switchesare shown-inthe normalopen or closed position, with the operating .coils de-energized a suitable low voltagesupplyisprovided by mains l and 2.
On depressing start button -3 .the relay A is energized and closes-the holding contact A1 and also starts the time motor-G which is preferably a synchronous motor.
When the-start button-{i is-released the circuit to the relay A is maintained through the holding contact A1 and contacts .31 and E 2 which are normally closed.
The motor Gdrivesits pulsatoror make-andbreak G1 andthus imparts impulses to the sole noid coil T, the current flowing through contacts Q1, R1, D2 which are normally closed. The ratchet solenoid T is thus intermittently energized and actuates the pawl ill and ratchet I! and the control card drum 4 is rotated by a step-by-step movement through the spur gear i2.
The drum is provided with a gauze covering 411 with which a common return finger lb engages.
When the wash cycle finger makes contact through a slot 5a in the control card I3 the relay B is energized. This relay controls contacts B1, B2 and B3, opening B1 and B3, and closing B2. The closing of contact B2 energizes relay C which controls contacts C1, C2 and thus contacts C1, C2 are closed. Contact C1 closes a retaining circuit for relay C.
Assuming now that hot water is to be delivered to the washing machine M and that a slot in the card allows the water control finger 6 to complete a circuit to energize relay R, which controls contacts R1 and R2. R3 so that contact R1 will be opened and contacts R2, R3 closed. The closing of contact R3 completes a circuit to the solenoid [5 by which the compressed air valve I 6 is opened permitting air to flow to cylinder i? to open hot water valve 18 so that water flows through pipe I9 and meter 20 to the washing machine l4.
Contact R1 being in series with the pulsator G1 disestablishes the normal time impulse circuit so that the time motor G while still running does not drive the card drum 4. At the same time by closing contact R2 a circuit is established through Q1, R2, pulsator M1 of the meter Eli and solenoid coil T so that the drive of the card drum 4 is now taken over by the water meter 28 which is driven by water flowing through pipe I 9, impulses being imparted by pulsator M1 to the sole noid T.
Similarly when soap solution is to be delivered a circuit is completed through solution finger '5 making contact through a slot in the card it by which the relay Q is energized and the inlet valve for the soap solution opened. Relay Q controls contacts Q1 and Q3, so that contact Q1 will be opened and contacts Q2, Q3 closed. The closing of contact Q3 completes a circuit to the solenoid 2| so that compressed air valve 22 operates to actuate air cylinder 23 whereby the valve 24 for soap solution opens and the soap solution flows by pipe 25, solution meter and pipe 2'5 to the washing machine l4. Contact Q2 is in series with solution meter pulsator M2 so that the solution meter 26 now takes over the drive of the card drum 4.
Contact Q1 opens the circuit to the water meter pulsator M1 so that the water meter drive to the card drum is stopped.
When the predetermined amount of solution has been delivered, the card will interrupt the circuit through the finger l de-energizing relay Q, closing contact Q1 and opening contacts Q-z and Q3 thereby cutting out the solution pulsator M: and again completing the circuit to the time motor pulsator G1 so that the time motor G takes over the drive of the card drum 3. At the same time opening of contact Q3 causes the solution valve 24 to close.
It will be appreciated that various liquids will be delivered through the meter 26 to the washing machine, such as blue, soap, soda and meter flushing water and the delivery of these to the meter 26 will be controlled respectively by valves 28, Zfi, 30, 3| under the control of contact fingers operating through appropriate slots in the card IS, the arrangement being such that when any one of said valves opens or closes, the meter valve 24 also functions.
When the wash cycle is complete the card will interrupt the circuit through wash cycle finger 5 thereby de-energizing relay B.
The de-energizing of relay B causes contacts B1 and B3 to close and contact B2 to open. The closing of contact B3 energizes relay D thereby closing contact D1 and D3 and opening contact D2. The opening of contact D2 interrupts the normal time pulse circuit including pulsator G1, while the closing of contact D3 completes a circuit to the relay through a contact T1.
The closing of contact D1 energizes relay E thereby closing contact E1 and opening contact E2.
The solenoid T incorporates a trembler circuit which is controlled by the normally closed contact T1 comprising a fixed contact 40 on bracket il and a moving contact 42 mounted on an extension l3 of the pawl element It.
When the contact D3 is closed (R1 and Q1 being already closed), the circuit including contact T1 will be continuously energized so that the tremcler maseand-break contacts 50, 42 function and the ratchet solenoid T will operate rapidly as it interrupts its own supply and thus the drum 4 is automatically rotated to bring it to its initial or zero position.
At the zero position the wash cycle finger 5 again contacts with the drum gauze l3 and the relay B is energized. At this moment the circuit to relay A is maintained through closed contact B1 since relay E is energized and contact E2 is open.
Immediately relay B is energized (at zero position) contact B1 will open tie-energizing relay A. Contact A1 will then open and the time motor G will stop since it is no longer supplied with current through contact A1.
The card drum 4 will thus stop immediately the wash cycle finger 5 enters the wash cycle slot and the card drum will thus be in the correct position to start a fresh cycle which will commence when start button 3 is depressed.
Should the power supply be interrupted during the course of a wash cycle, the pressing of start button 3 when the power is restored will allow the wash to continue from the point of interruption, Should the power supply be interrupted during a resetting or zeroising period it is necessary to press both start and reset buttons 3 and 8 to enable the reset movement to be completed.
Thus, the ratchet drive to the control drum l will be controlled at separate times by four sets of impulses:
(l) Impulses set up by the motor pulsator G1 which are proportional to time.
(2) Impulses set up by the Water motor pulsator M1 which are proportional to gallons of water.
(3) Impulses set up by the soap solution meter pulsator M2 which are proportional to gallons.
(4) Impulses set up by the solenoid (T) trembler coil.
The pulsators G1, M1 and M2 comprise pairs of contact elements one of which is operated by an eccentric 32, 33, 34, respectively, driven by the time motor G, the water meter 20 and the solution meter 26 respectively.
It will be appreciated that a complete wash cycle has not been described as such may include a series of washes, a series of rinses and other items in known manner all of which are controlled by appropriate slots in the card l3 and contact fingers co-operating therewith.
The improved control is such that the operator is only required to load and unload the washing machine as the whole process including the return or" the control drum is automatic, it only being necessary to start the process by the pressing of the start button.
The various relays controlled by the contact fingers 5, 6, i and those controlling the various phases of the complete washing cycle including the steam valve 36 and dump valve 31 are enclosed within a case 35 having terminals to which the main supply leads I and 2 are connected.
We claim:
1. An automatic control for a machine or plant in which it is necessary to operate valves to deliver predetermined quantities of liquids at predetermined times and having a rotary control card switch means to establish controlling circuits according to a predetermined formula, wherein the drive for the control card is efiected through a single one way drive means intermittently actuated by a solenoid to which impulses are transmitted alternately through a circuit controlled by a time motor, and a circuit controlled by a meter through which the liquid flows, means being provided for disestablishing the circuit inappropriate to the prevailing conditions.
2. An automatic control for laundry washing machines having a rotary control card switch means adapted to establish controlling circuits according to a predetermined formula, wherein the drive for the control card is efiected through a single one way drive means intermittently actuated by a solenoid to which impulses are trans mitted alternately through a circuit controlled by a time motor, a circuit controlled by water meter, and a circuit controlled by a solution meter, means being provided for disestablish- 6 ing the circuit or circuits inappropriate to the prevailing conditions.
3. An automatic control for laundry washing machines as claimed in claim 2, wherein the one way drive means comprises a pawl and ratchet mechanism.
4. An automatic control for laundry washing machines as claimed in claim 3, wherein the impulses for the solenoid are provided by pulsating devices actuated by rotary cam means from the time motor and the solution meter.
5. An automatic control for laundry washing machines as claimed in claim 2, wherein means are provided under the control of the control card for imparting impulses to the solenoid at the end of a washing cycle for resetting the control card to its starting or zero position.
6. An automatic control for laundry washing machines as claimed in claim 5, wherein said means comprise trembler make-and-break means in the coil circuit adapted to operate during a period when the coil circuit is continuously energized.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,889,280 Edgren Nov. 29, 1932 1,940,549 Jones Dec. 19, 1933 2,055,031 Hutchings Sept. 22, 1936 2,137,928 Tangueray Nov. 22, 1938 2,254,269 "Clark et a1. Sept. 2, 1941 2,374,590 Dunham Apr. 24, 1945 2,427,207 Grieveson Sept. 9, 1947 2,430,668 'Chamberlin Nov. 11, 1947 2,449,634 Baade Sept. 21, 1948 2,533,888 Kahn Dec. 12, 1950 2,608,252 Candor Aug. 26, 1952 FOREIGN PATENTS Number Country Date 579,697 Great Britain Aug. 13, 1946 597,561 Great Britain Jan. 28, 1948
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2677259X | 1950-09-06 | ||
| GB21965/50A GB704670A (en) | 1950-09-06 | 1950-09-06 | Improvements in and relating to automatic control of laundry washing machines and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2677259A true US2677259A (en) | 1954-05-04 |
Family
ID=27665406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US245207A Expired - Lifetime US2677259A (en) | 1950-09-06 | 1951-09-05 | Automatic control of laundry washing machines and the like |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2677259A (en) |
| GB (1) | GB704670A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2957330A (en) * | 1954-02-26 | 1960-10-25 | Kermit R Cline | Combination washer and drier |
| DE1139567B (en) * | 1960-08-04 | 1962-11-15 | Siemens Ag | Device for program control of electrical devices |
| US3099022A (en) * | 1961-01-25 | 1963-07-30 | Pfenningsberg Gmbh Maschfab | Method of operating a washing machine |
| US5486730A (en) * | 1993-03-18 | 1996-01-23 | Solar Turbines Incorporated | Rotor assembly |
| US20060087186A1 (en) * | 2004-10-25 | 2006-04-27 | Wasson Ken G | Rotor-stator structure for electrodynamic machines |
| US20060087188A1 (en) * | 2004-10-25 | 2006-04-27 | Petro John P | Rotor-stator structure for electrodynamic machines |
| US20070205675A1 (en) * | 2004-10-25 | 2007-09-06 | Petro John P | Field pole members and methods of forming same for electrodynamic machines |
| US7884522B1 (en) | 2004-10-25 | 2011-02-08 | Novatorque, Inc. | Stator and rotor-stator structures for electrodynamic machines |
| US7982350B2 (en) | 2004-10-25 | 2011-07-19 | Novatorque, Inc. | Conical magnets and rotor-stator structures for electrodynamic machines |
| US8330316B2 (en) | 2011-03-09 | 2012-12-11 | Novatorque, Inc. | Rotor-stator structures including boost magnet structures for magnetic regions in rotor assemblies disposed external to boundaries of conically-shaped spaces |
| US8471425B2 (en) | 2011-03-09 | 2013-06-25 | Novatorque, Inc. | Rotor-stator structures including boost magnet structures for magnetic regions having angled confronting surfaces in rotor assemblies |
| US8543365B1 (en) | 2004-10-25 | 2013-09-24 | Novatorque, Inc. | Computer-readable medium, a method and an apparatus for designing and simulating electrodynamic machines implementing conical and cylindrical magnets |
| US9093874B2 (en) | 2004-10-25 | 2015-07-28 | Novatorque, Inc. | Sculpted field pole members and methods of forming the same for electrodynamic machines |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1889280A (en) * | 1930-12-04 | 1932-11-29 | Edgren Ernst David | Device for automatically supplying washing solutions to washing machines |
| US1940549A (en) * | 1931-12-19 | 1933-12-19 | Cons Laundries Corp | Laundering apparatus |
| US2055031A (en) * | 1930-11-07 | 1936-09-22 | Prosperity Co Inc | Timer with interchangeable formula for controlling machines having series of operations |
| US2137928A (en) * | 1936-01-24 | 1938-11-22 | Baker Perkins Ltd | Automatic control of washing and other machines |
| US2254269A (en) * | 1938-08-30 | 1941-09-02 | Westinghouse Electric & Mfg Co | Washing apparatus |
| US2374590A (en) * | 1944-02-05 | 1945-04-24 | Gen Electric | Washing machine control |
| GB579697A (en) * | 1944-06-13 | 1946-08-13 | Frank Dewhurst | Improvements in and relating to the automatic control of laundry washing machines and the like |
| US2427207A (en) * | 1944-02-17 | 1947-09-09 | American Machine & Metals | Program formulator |
| US2430668A (en) * | 1941-06-16 | 1947-11-11 | American Machine & Metals | Washing machine and automatic control mechanism therefor |
| GB597561A (en) * | 1945-08-23 | 1948-01-28 | Braithwaite I & Son Eng Ltd | Improvements in the control of periodically reversible and unidirectional machines such as washing machines, rotary drying machines, dry cleaning machines, dyeing machines, or the like |
| US2449634A (en) * | 1946-06-10 | 1948-09-21 | Visioneering Company Inc | Automatic washing machine |
| US2533888A (en) * | 1943-12-23 | 1950-12-12 | Leo M Kahn | Cleaning or laundry machine |
| US2608252A (en) * | 1947-07-11 | 1952-08-26 | Gen Motors Corp | Domestic appliance |
-
1950
- 1950-09-06 GB GB21965/50A patent/GB704670A/en not_active Expired
-
1951
- 1951-09-05 US US245207A patent/US2677259A/en not_active Expired - Lifetime
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2055031A (en) * | 1930-11-07 | 1936-09-22 | Prosperity Co Inc | Timer with interchangeable formula for controlling machines having series of operations |
| US1889280A (en) * | 1930-12-04 | 1932-11-29 | Edgren Ernst David | Device for automatically supplying washing solutions to washing machines |
| US1940549A (en) * | 1931-12-19 | 1933-12-19 | Cons Laundries Corp | Laundering apparatus |
| US2137928A (en) * | 1936-01-24 | 1938-11-22 | Baker Perkins Ltd | Automatic control of washing and other machines |
| US2254269A (en) * | 1938-08-30 | 1941-09-02 | Westinghouse Electric & Mfg Co | Washing apparatus |
| US2430668A (en) * | 1941-06-16 | 1947-11-11 | American Machine & Metals | Washing machine and automatic control mechanism therefor |
| US2533888A (en) * | 1943-12-23 | 1950-12-12 | Leo M Kahn | Cleaning or laundry machine |
| US2374590A (en) * | 1944-02-05 | 1945-04-24 | Gen Electric | Washing machine control |
| US2427207A (en) * | 1944-02-17 | 1947-09-09 | American Machine & Metals | Program formulator |
| GB579697A (en) * | 1944-06-13 | 1946-08-13 | Frank Dewhurst | Improvements in and relating to the automatic control of laundry washing machines and the like |
| GB597561A (en) * | 1945-08-23 | 1948-01-28 | Braithwaite I & Son Eng Ltd | Improvements in the control of periodically reversible and unidirectional machines such as washing machines, rotary drying machines, dry cleaning machines, dyeing machines, or the like |
| US2449634A (en) * | 1946-06-10 | 1948-09-21 | Visioneering Company Inc | Automatic washing machine |
| US2608252A (en) * | 1947-07-11 | 1952-08-26 | Gen Motors Corp | Domestic appliance |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2957330A (en) * | 1954-02-26 | 1960-10-25 | Kermit R Cline | Combination washer and drier |
| DE1139567B (en) * | 1960-08-04 | 1962-11-15 | Siemens Ag | Device for program control of electrical devices |
| US3099022A (en) * | 1961-01-25 | 1963-07-30 | Pfenningsberg Gmbh Maschfab | Method of operating a washing machine |
| US5486730A (en) * | 1993-03-18 | 1996-01-23 | Solar Turbines Incorporated | Rotor assembly |
| US7239058B2 (en) | 2004-10-25 | 2007-07-03 | Novatorque, Inc. | Rotor-stator structure for electrodynamic machines |
| US7884522B1 (en) | 2004-10-25 | 2011-02-08 | Novatorque, Inc. | Stator and rotor-stator structures for electrodynamic machines |
| US7061152B2 (en) | 2004-10-25 | 2006-06-13 | Novatorque, Inc. | Rotor-stator structure for electrodynamic machines |
| US20060145555A1 (en) * | 2004-10-25 | 2006-07-06 | Petro John P | Rotor-stator structure for electrodynamic machines |
| US20060152099A1 (en) * | 2004-10-25 | 2006-07-13 | Petro John P | Rotor-stator structure for electrodynamic machines |
| US7205693B2 (en) | 2004-10-25 | 2007-04-17 | Novatorque, Inc. | Rotor-stator structure for electrodynamic machines |
| US20060087186A1 (en) * | 2004-10-25 | 2006-04-27 | Wasson Ken G | Rotor-stator structure for electrodynamic machines |
| US20070205675A1 (en) * | 2004-10-25 | 2007-09-06 | Petro John P | Field pole members and methods of forming same for electrodynamic machines |
| US7294948B2 (en) | 2004-10-25 | 2007-11-13 | Novatorque, Inc. | Rotor-stator structure for electrodynamic machines |
| US20060087188A1 (en) * | 2004-10-25 | 2006-04-27 | Petro John P | Rotor-stator structure for electrodynamic machines |
| US7982350B2 (en) | 2004-10-25 | 2011-07-19 | Novatorque, Inc. | Conical magnets and rotor-stator structures for electrodynamic machines |
| US8283832B2 (en) | 2004-10-25 | 2012-10-09 | Novatorque, Inc. | Sculpted field pole members and methods of forming the same for electrodynamic machines |
| US9093874B2 (en) | 2004-10-25 | 2015-07-28 | Novatorque, Inc. | Sculpted field pole members and methods of forming the same for electrodynamic machines |
| US8330317B2 (en) | 2004-10-25 | 2012-12-11 | Novatorque, Inc. | Conical magnets and rotor-stator structures for electrodynamic machines |
| US8543365B1 (en) | 2004-10-25 | 2013-09-24 | Novatorque, Inc. | Computer-readable medium, a method and an apparatus for designing and simulating electrodynamic machines implementing conical and cylindrical magnets |
| US8471425B2 (en) | 2011-03-09 | 2013-06-25 | Novatorque, Inc. | Rotor-stator structures including boost magnet structures for magnetic regions having angled confronting surfaces in rotor assemblies |
| US8330316B2 (en) | 2011-03-09 | 2012-12-11 | Novatorque, Inc. | Rotor-stator structures including boost magnet structures for magnetic regions in rotor assemblies disposed external to boundaries of conically-shaped spaces |
Also Published As
| Publication number | Publication date |
|---|---|
| GB704670A (en) | 1954-02-24 |
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