CA1102574A - Automatic egg cooker - Google Patents
Automatic egg cookerInfo
- Publication number
- CA1102574A CA1102574A CA298,387A CA298387A CA1102574A CA 1102574 A CA1102574 A CA 1102574A CA 298387 A CA298387 A CA 298387A CA 1102574 A CA1102574 A CA 1102574A
- Authority
- CA
- Canada
- Prior art keywords
- egg
- egg holder
- holder
- magnet
- alarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J29/00—Egg-cookers
- A47J29/02—Egg-cookers for eggs or poached eggs; Time-controlled cookers
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Cookers (AREA)
Abstract
Automatic Egg Cooker Abstract of the Disclosure This invention features an automatic egg cooker in which one of the eggs to be cooked is continuously tested for consistency by being placed in an oscillatory system. The magnitude and duration of oscillations due to an initial displacement of the system are measured. An alarm is set to ring when the desired consistency of the egg is reached.
Description
~ DZ~i~4 This invention provides an automatlc steam cooker in which one of the eggs to be cooked is placed in a holder which is suspended by torsion springs thus forming a rotational inertia-spring system. The automatic mechanism continuously applies initial rotational displacement to this system and then measures and integrates the amplitude of oscillations. The total amplitude of oscillatlons i5 an indication of the conslstency of the egg. The firmer the egg, the larger the amplitude of oscillations.
This is due to the char,ge of the damping ratio of the system. When the total amplitude reaches a pre-set amount, the cooker rings a bell or a buzzer.
In the present art of automatic egg cookers, the cookers do not sense the conslstency of the eggs, but either ring a bell or remove the eggs from bolllng water after a pre-set time. Thls is not satisfactory since the time an egg cooks depends on many factors, such as the amount of heat applied, how cold the egg was at the start, how old the egg is and its slze.
It is the obJect of my invention to provide an egg cooker whlch senses the conslstency of the egg inslde without breaking it open and whlch rings an alarm when the egg reaches a preselected conslstency. Another ob~ect of mv invention i5 to provlde an egg cooker which is self-contained and provides all the power required for the device from the steam generated in the cooker. Another obJect of my lnvention is to provide an egg cooker in which the testlng and sensing of the egg conslstency is done auto-matically. ~hese and other ob~ect~ of my in~ention will become apparent in the description and drawings which follow.
In drawings which illustrate embodiments of my lnvention, Flgure 1 iB a cross-sectional view of the cooker, the egg belng tested ln the holder and the other eggs;
Flgure 2 shows the mRchanlsm by whlch the egg is tested, the steam turbine 3 and the clockwork which operates the system;
Figure 3 shows the detalls of the steam turblne;
Figure 4 shows varlous key components in pictorial form;
Figure 5 shows the solenoid and magnet arrangement as used in the electro-nically controlled cooker;
Figure 6 shows the circuit in block diagram form of the electronlcally controlled cooker;
Flgure 7 shows another arrangement of the system of Fig. 6 in which the number of oscillatlons is counted.
- 1 - ~
q~
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5~
In Figure 1, 1 ls the container pot shown in segmented pictorial view.
This is due to the char,ge of the damping ratio of the system. When the total amplitude reaches a pre-set amount, the cooker rings a bell or a buzzer.
In the present art of automatic egg cookers, the cookers do not sense the conslstency of the eggs, but either ring a bell or remove the eggs from bolllng water after a pre-set time. Thls is not satisfactory since the time an egg cooks depends on many factors, such as the amount of heat applied, how cold the egg was at the start, how old the egg is and its slze.
It is the obJect of my invention to provide an egg cooker whlch senses the conslstency of the egg inslde without breaking it open and whlch rings an alarm when the egg reaches a preselected conslstency. Another ob~ect of mv invention i5 to provlde an egg cooker which is self-contained and provides all the power required for the device from the steam generated in the cooker. Another obJect of my lnvention is to provide an egg cooker in which the testlng and sensing of the egg conslstency is done auto-matically. ~hese and other ob~ect~ of my in~ention will become apparent in the description and drawings which follow.
In drawings which illustrate embodiments of my lnvention, Flgure 1 iB a cross-sectional view of the cooker, the egg belng tested ln the holder and the other eggs;
Flgure 2 shows the mRchanlsm by whlch the egg is tested, the steam turbine 3 and the clockwork which operates the system;
Figure 3 shows the detalls of the steam turblne;
Figure 4 shows varlous key components in pictorial form;
Figure 5 shows the solenoid and magnet arrangement as used in the electro-nically controlled cooker;
Figure 6 shows the circuit in block diagram form of the electronlcally controlled cooker;
Flgure 7 shows another arrangement of the system of Fig. 6 in which the number of oscillatlons is counted.
- 1 - ~
q~
. ' -.
5~
In Figure 1, 1 ls the container pot shown in segmented pictorial view.
2 is one of the eggC which is placed in egg holder 3; 4 is an egg holder support which supports the egg holder at the lower end via torsional spring wire 5. The upper end of the holder i~ supported on lid 6 via torsional spring wire 7 and bracket 8 (See also Figure ~ racket 8 is fixed to the lid. 9 are the other eggs in the cooker which are placed in a tray with holes in it. A tube 10 is attached to the upper end of egg holder 3 and surrounds wlre 7. Wire 7 passes through tube 10 and is al90 attached to the upper part of egg holder 3 at the bottom of tube 10. Tube 10 passes through the lid vla a hole 11 whlch ls sllghtly larger than the outside diameter of tube 10 and thus tube 10 does not touch the lid. Member 12 is provlded wlth a hole at one side and is press fitted over tube 10. Flat ~pring members 13 are also attached to member 12 at a point near tube 10.
Springs 13 are both bent to one side and they exert a force on toothed wheel 14 and thus form a ratchet arrangement so that when the egg holder oscillates, toothed wheel 14 rotates. Wheel 14 has a sleeve bearlng 15 which i8 flxed to it. A flexible strlng 16 is attached at one end near the centre of wheel 14 and at the other end to one end of flat sprlng element 17. ~he other end of sprlng 17 ls flxed to the lid. When wheel 14 rotates, strlng 16 winds on bearing 15. ~earing 15 is rotatably supported by pln 18 whlch 19 fixed to the lld by pln holder 19. Holder 19 also holds controlllng lever 20 onto the lld, but allows it to rotate. Sprlng washer 21 provldes frictlon for the ad~usting lever. The rest of the mechanism consists of a clockwork comprising gears 22, 23, 24 and 25, the steam turbine C, a reset sub-a~sembly A, a bell hammer sub-assembly ~ and a bell 29.
Construction of the turblne sub-a~3embly C is shown ln Figure 3. It con-slsts of an upper hollow rotating member 30 to which two plpes 31 are attached. Plpes 31 are bent by ~0 degrees at their outer ends to form
Springs 13 are both bent to one side and they exert a force on toothed wheel 14 and thus form a ratchet arrangement so that when the egg holder oscillates, toothed wheel 14 rotates. Wheel 14 has a sleeve bearlng 15 which i8 flxed to it. A flexible strlng 16 is attached at one end near the centre of wheel 14 and at the other end to one end of flat sprlng element 17. ~he other end of sprlng 17 ls flxed to the lid. When wheel 14 rotates, strlng 16 winds on bearing 15. ~earing 15 is rotatably supported by pln 18 whlch 19 fixed to the lld by pln holder 19. Holder 19 also holds controlllng lever 20 onto the lld, but allows it to rotate. Sprlng washer 21 provldes frictlon for the ad~usting lever. The rest of the mechanism consists of a clockwork comprising gears 22, 23, 24 and 25, the steam turbine C, a reset sub-a~sembly A, a bell hammer sub-assembly ~ and a bell 29.
Construction of the turblne sub-a~3embly C is shown ln Figure 3. It con-slsts of an upper hollow rotating member 30 to which two plpes 31 are attached. Plpes 31 are bent by ~0 degrees at their outer ends to form
3 Jet~ whlch provlde the torque. Sleeve bearlng 32 i8 press fitted into a hole at the top of member 30 and 1B free to rotate on shaft 33. Shaft 33 is fixed to the lower and stationary part of turblne member 34. Sleeve bearlng 32 also supports spur Bear 26 at the top of the turblne. ~ember 34 is press fitted onto the lld and has holes underneath for the steam to go through. Turbine C provid~s power to the system via ~ear train 25, 24, 23 and 22. Gear 22 18 provlded with a peg 35. Peg 35 i8 arranged to come ln contact wlth member 12 and sub-assemblles B and A.
Sub-assembly B conslsts of a plvoted cyllndrical member 36. Rigid wire 37 protrudes from the slde of member 36. Semi-rlgid wire 38 is also attached
Sub-assembly B conslsts of a plvoted cyllndrical member 36. Rigid wire 37 protrudes from the slde of member 36. Semi-rlgid wire 38 is also attached
4 to member 36 and at its end a welght 39 is attached to form the ha~mer . .
for ringing bell 29. Two flat sprlng members are alæo attached to member 36, one spring 40 is a stiff spring and the other spring 41 i9 a weaker spring.
Spring 41 rests on peg 42 which is fixed to the lid. Spring 41 tends to rotate the whole sub-assembly B counterclockwise. This causes wire 38 to press against peg 43. In this posltion hammer 39 is near bell 29 but does not touch it.
Sub-assembly A consists of pi~oted cylindrical member 44 on which rigid wires 45 and 46 are attached at opposite sides. Wire 46 is bent upwards at its free end. The purpose of this assembly is to llft sprlng~ 13 off wheel 14 and reset the measuring mechanism when peg 35 on wheel 22 pushes against wire 45.
Operatlon of the egg cooker is as follows: One of the eggs to be cooked is placed on the egg holder~ the pot is filled with a small quantity of water and the lid 18 placed on the pot. The lld fits tightly on the pot so that a small amount of steam pressure develops when the water boils.
The steam passes through the holes of member 34 of the turblne and through turbine tubes 31, thus settlng the turblne ln rotation which, ln turn, rotates the rest of the gears. This starts a cycle of vibratlng the egg holder and egg~ measurlng the total amplitude of all oscillatlons~ rlnging the bell when the sum of all amplltudes reaches a predetermined polnt and resettlng the mechanlsm.
This is done as follows: Peg 35 on gear 22 pushes member 12 to one side~
causing it to rotate partly in the clockwise directlon (See Flg. 2).
After peg 35 rotated beyond the reach of me~ber 12, member 12 is released and the egg holder 3 and egg 2 i8 set ln osclllatory rotatlonal motion due to the moment of lnertia of the egg and the torslon provlded by 9prlng wires 5 and 7. While the egg holder, egg and member 12 are oscillating, flat springs 13 push alternately on toothed wheel 14 which, due to the ratchet effect, rotate~ in a clockwise directlon. The total amount of rotation of wheel 14 18 proportional to the sum of all the peak amplitudes of all the osc111atlons. If the egg is raw and in liquid form~ the osclllatory system ls heavily d~mped, the osclllation~ die down fast snd the rotstlon of wheel 14 18 smsll. If, however, the conslstency of the egg i9 firm~ the system ls less damped, the oscillations last longer and wheel 14 will turn farther. Next, peg 35 pushes on wire 37 ; and causes sub-assembly B to rotate sllghtly clockwise. When peg 35 rotates beyond the reach of wire 37, sub-assembly B 18 released and, due to spring action of sprlng 41 pressing against peg 42, sub-assembly B
; will return to its origlnal positlon and wire 3B will rest on peg 43;
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but, because spring 41 is a weak spring, hammer ~9 will not ring the bell.
If, however, wheel 14, due to larger oscillations of the egg, rotated to the point where protrusion 48 on wheel 14 came to rest under spring 40, then, when sub-assembly B is released, it will return to its orlginal position with greater velocity. In this case, because of flexure of wire 38, the hammer will hit the bell. Next, peg 35 pushes against wire 45 and causes sub-assembly A to rotate slightly clockwise. This causes wire 46 to push springs 13 away from wheel 14. When this happens, wheel 14 will turn counterclockwise due to the action of spring 17 and string 16.
While wheel 14 was turning clockwise~ string 16 was winding on sleeve 15 ABainst the force provided by spring 17. Wheel 14 will keep turning counterclockwise until protruding member 47 comes to rest on the vertical part of controlling lever 20. The amount of rotation of wheel 14 required to cause the bell to ring depends on the position of controlling lever 20.
If lever 20 i8 set in a more counterclockwise position, wheel 14 will have to rotate farther before the bell rings. For this to happenJ the consistency of the eg~ must be firmer. The opposite will happen if lever 20 is set ln a more clockwise position. Thus the position of lever 20 determines how firm the egg has to be before the bell will ring.
Although in the above described device the oscillation, measurement and reset cyclic proceæs was achieved by the clockwork mechanlsm driven by a steam turbine, the s~me process can be achleved by havlng the clock work driven by a malnsprlng, electrlc motor or an~ other source of mechanlcal power.
In another version of the device, the egg osclllation, measurement and reset cycle is done electronically (See Figs. 5 and 6). In this case, member 12 ha8 a magnet 50 attached to it which is curved and fits lnto a curved solenold 51 whlch ls flxed to the lld. The radius of curvature of magnet 50 and solenold 51 ls equal to the distance from the point of attachment o~ magnet 50 to the centre of rotatlon of member 12.
Member 12 and magnet 50 are free to osclllate because m~gnet 50 does not touch the lnslde surface of solenold 51.
In Flgure 6, block 52 repre~ents tlming circuits which apply pulse voltages of various duration flrst to transistor 53, then to *ield effect translstor 54 and then to field ef~ect transistor 55. Thi6 process repeats cycllcally. When a short flrst pulse i8 applied to the base of translstor 53 momentarlly, capacitor 56, which is orlginally charged vla resl6tor 57, discharge~ through solenoid 51, -- 4 _ .
thus providin~ an impulse torque to the egg, holder and torsion wire system as before. The system oscillates and magnet 50 induces an AC
voltage in solenoid 51. I~mediately after the first pulse elapsed, a second pulse of much longer duration is applied to the gate of transistor 54 via resistor 64. This pulse turns transistor 54 on and connects solenoid 51 to amplifier 58. Amplifier 58 amplifies the alternating voltage pro~uced by solenoid 51. The output voltage from amplifier 58 is full-wave rectified by bridge rectifier 59 and is applied to integrating smplifier 60. The output of integrator 60 is a voltage of which the magnitude is proportionsl to the area under the curve of the waveform produced by rectifier 59.
Therefore, this voltage is proportional to the total sum of all the oscillations produced by the egg, holder and ~pring system. Control poten-tiometer 61 divides down the output voltage from integrator 60 and applies it to the base of transistor 62, thus providing base current. Transistor 62 drlves alarm unlt 63 which sounds an alarm when the base current in tran-sistor 62 reaches a certain level.
In operatlon, control 61 is set for the desired consistency of the eggs belng cooked. If control 61 ls set with the wiper near the ground connection, a higher voltage will be required out of integrating amplifier 60 to provide sufficlent base current to transistor 62 to operate the alarm. This con-ditlon will occur when the egg is quite firm in consistency. If the wiper of control 61 is set to the other end of the potentiometer, a softer egg will cause the alarm to ring. This last version of the egg cooker 18 particularly suited for incorporatlon into an electrlc cooker whlch i8 electrlcally heated by sn element at the bottom of the pot.
Another method of testing the egg for conslstency is to place it in an oscillatory system and set it oscillatlng, as before, and count the number o~ oscillatlon~ exceeding a pre-set amplltude. Thls can be achieved by slight modificatlon to the sy~tem shown ln Fig. 6. Flg. 7 shows the 3 modifled clrcult. The output of rectlfler 59 ls applled to amplifier 70. Ihe ampllfied full-wave rectlfled signal is applled to potentiometer 71 which sets a threshold. The divlded down slgnal from potentlometer 71 is fed to Schmitt trlgger 72 whlch converts the signal ~nto pulses. These pulses are fed to counter 73 where they are counted. The number registered in counter 73 is dRcoded by decoder 74 which is set to provide a voltage to transistor 62 when a certain number in counter 73 is decoded, and ~his rings alarm 63~ Counter 73 1~ reset by the timing clrcuits of block 52 at the end of each cycle of operatlon. In thls system, the alarm is set to rlng at the deslred consistency either by ad~usting threshold potentiometer 4 71 or by setting decoder 74 to activate the alarm clrcuits when a certain number is registered in the counter. Setting the wiper of poten-i74 tiometer 71 near the ground connection will require the oscillationsof the egg to keep greater amplitude~ for longer time in order for the alarm to sound. This means that the egg has to be firmer. The same can be achieved by setting decoder 74 to produce an output to transistor 62 when a greater number of counts is regictered in counter 7~.
It is possible to cook poached eggs in the egg cooker by providing small trays in which the contents of the eggs can be placed. The trays can be put in the egg cooker in place of the whole eggs. One tray is placed in the egg holder. By providing these trays, the egg cooker becomes more versatile.
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for ringing bell 29. Two flat sprlng members are alæo attached to member 36, one spring 40 is a stiff spring and the other spring 41 i9 a weaker spring.
Spring 41 rests on peg 42 which is fixed to the lid. Spring 41 tends to rotate the whole sub-assembly B counterclockwise. This causes wire 38 to press against peg 43. In this posltion hammer 39 is near bell 29 but does not touch it.
Sub-assembly A consists of pi~oted cylindrical member 44 on which rigid wires 45 and 46 are attached at opposite sides. Wire 46 is bent upwards at its free end. The purpose of this assembly is to llft sprlng~ 13 off wheel 14 and reset the measuring mechanism when peg 35 on wheel 22 pushes against wire 45.
Operatlon of the egg cooker is as follows: One of the eggs to be cooked is placed on the egg holder~ the pot is filled with a small quantity of water and the lid 18 placed on the pot. The lld fits tightly on the pot so that a small amount of steam pressure develops when the water boils.
The steam passes through the holes of member 34 of the turblne and through turbine tubes 31, thus settlng the turblne ln rotation which, ln turn, rotates the rest of the gears. This starts a cycle of vibratlng the egg holder and egg~ measurlng the total amplitude of all oscillatlons~ rlnging the bell when the sum of all amplltudes reaches a predetermined polnt and resettlng the mechanlsm.
This is done as follows: Peg 35 on gear 22 pushes member 12 to one side~
causing it to rotate partly in the clockwise directlon (See Flg. 2).
After peg 35 rotated beyond the reach of me~ber 12, member 12 is released and the egg holder 3 and egg 2 i8 set ln osclllatory rotatlonal motion due to the moment of lnertia of the egg and the torslon provlded by 9prlng wires 5 and 7. While the egg holder, egg and member 12 are oscillating, flat springs 13 push alternately on toothed wheel 14 which, due to the ratchet effect, rotate~ in a clockwise directlon. The total amount of rotation of wheel 14 18 proportional to the sum of all the peak amplitudes of all the osc111atlons. If the egg is raw and in liquid form~ the osclllatory system ls heavily d~mped, the osclllation~ die down fast snd the rotstlon of wheel 14 18 smsll. If, however, the conslstency of the egg i9 firm~ the system ls less damped, the oscillations last longer and wheel 14 will turn farther. Next, peg 35 pushes on wire 37 ; and causes sub-assembly B to rotate sllghtly clockwise. When peg 35 rotates beyond the reach of wire 37, sub-assembly B 18 released and, due to spring action of sprlng 41 pressing against peg 42, sub-assembly B
; will return to its origlnal positlon and wire 3B will rest on peg 43;
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but, because spring 41 is a weak spring, hammer ~9 will not ring the bell.
If, however, wheel 14, due to larger oscillations of the egg, rotated to the point where protrusion 48 on wheel 14 came to rest under spring 40, then, when sub-assembly B is released, it will return to its orlginal position with greater velocity. In this case, because of flexure of wire 38, the hammer will hit the bell. Next, peg 35 pushes against wire 45 and causes sub-assembly A to rotate slightly clockwise. This causes wire 46 to push springs 13 away from wheel 14. When this happens, wheel 14 will turn counterclockwise due to the action of spring 17 and string 16.
While wheel 14 was turning clockwise~ string 16 was winding on sleeve 15 ABainst the force provided by spring 17. Wheel 14 will keep turning counterclockwise until protruding member 47 comes to rest on the vertical part of controlling lever 20. The amount of rotation of wheel 14 required to cause the bell to ring depends on the position of controlling lever 20.
If lever 20 i8 set in a more counterclockwise position, wheel 14 will have to rotate farther before the bell rings. For this to happenJ the consistency of the eg~ must be firmer. The opposite will happen if lever 20 is set ln a more clockwise position. Thus the position of lever 20 determines how firm the egg has to be before the bell will ring.
Although in the above described device the oscillation, measurement and reset cyclic proceæs was achieved by the clockwork mechanlsm driven by a steam turbine, the s~me process can be achleved by havlng the clock work driven by a malnsprlng, electrlc motor or an~ other source of mechanlcal power.
In another version of the device, the egg osclllation, measurement and reset cycle is done electronically (See Figs. 5 and 6). In this case, member 12 ha8 a magnet 50 attached to it which is curved and fits lnto a curved solenold 51 whlch ls flxed to the lld. The radius of curvature of magnet 50 and solenold 51 ls equal to the distance from the point of attachment o~ magnet 50 to the centre of rotatlon of member 12.
Member 12 and magnet 50 are free to osclllate because m~gnet 50 does not touch the lnslde surface of solenold 51.
In Flgure 6, block 52 repre~ents tlming circuits which apply pulse voltages of various duration flrst to transistor 53, then to *ield effect translstor 54 and then to field ef~ect transistor 55. Thi6 process repeats cycllcally. When a short flrst pulse i8 applied to the base of translstor 53 momentarlly, capacitor 56, which is orlginally charged vla resl6tor 57, discharge~ through solenoid 51, -- 4 _ .
thus providin~ an impulse torque to the egg, holder and torsion wire system as before. The system oscillates and magnet 50 induces an AC
voltage in solenoid 51. I~mediately after the first pulse elapsed, a second pulse of much longer duration is applied to the gate of transistor 54 via resistor 64. This pulse turns transistor 54 on and connects solenoid 51 to amplifier 58. Amplifier 58 amplifies the alternating voltage pro~uced by solenoid 51. The output voltage from amplifier 58 is full-wave rectified by bridge rectifier 59 and is applied to integrating smplifier 60. The output of integrator 60 is a voltage of which the magnitude is proportionsl to the area under the curve of the waveform produced by rectifier 59.
Therefore, this voltage is proportional to the total sum of all the oscillations produced by the egg, holder and ~pring system. Control poten-tiometer 61 divides down the output voltage from integrator 60 and applies it to the base of transistor 62, thus providing base current. Transistor 62 drlves alarm unlt 63 which sounds an alarm when the base current in tran-sistor 62 reaches a certain level.
In operatlon, control 61 is set for the desired consistency of the eggs belng cooked. If control 61 ls set with the wiper near the ground connection, a higher voltage will be required out of integrating amplifier 60 to provide sufficlent base current to transistor 62 to operate the alarm. This con-ditlon will occur when the egg is quite firm in consistency. If the wiper of control 61 is set to the other end of the potentiometer, a softer egg will cause the alarm to ring. This last version of the egg cooker 18 particularly suited for incorporatlon into an electrlc cooker whlch i8 electrlcally heated by sn element at the bottom of the pot.
Another method of testing the egg for conslstency is to place it in an oscillatory system and set it oscillatlng, as before, and count the number o~ oscillatlon~ exceeding a pre-set amplltude. Thls can be achieved by slight modificatlon to the sy~tem shown ln Fig. 6. Flg. 7 shows the 3 modifled clrcult. The output of rectlfler 59 ls applled to amplifier 70. Ihe ampllfied full-wave rectlfled signal is applled to potentiometer 71 which sets a threshold. The divlded down slgnal from potentlometer 71 is fed to Schmitt trlgger 72 whlch converts the signal ~nto pulses. These pulses are fed to counter 73 where they are counted. The number registered in counter 73 is dRcoded by decoder 74 which is set to provide a voltage to transistor 62 when a certain number in counter 73 is decoded, and ~his rings alarm 63~ Counter 73 1~ reset by the timing clrcuits of block 52 at the end of each cycle of operatlon. In thls system, the alarm is set to rlng at the deslred consistency either by ad~usting threshold potentiometer 4 71 or by setting decoder 74 to activate the alarm clrcuits when a certain number is registered in the counter. Setting the wiper of poten-i74 tiometer 71 near the ground connection will require the oscillationsof the egg to keep greater amplitude~ for longer time in order for the alarm to sound. This means that the egg has to be firmer. The same can be achieved by setting decoder 74 to produce an output to transistor 62 when a greater number of counts is regictered in counter 7~.
It is possible to cook poached eggs in the egg cooker by providing small trays in which the contents of the eggs can be placed. The trays can be put in the egg cooker in place of the whole eggs. One tray is placed in the egg holder. By providing these trays, the egg cooker becomes more versatile.
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Claims (7)
1. A device for cooking eggs comprising a pot, a lid, an egg holder in which an egg can be placed said egg holder being suspended by elastic elements attached to said lid and said egg holder so that said egg holder and said egg are free to oscillate; means for oscillating said egg and said egg holder; means for measuring the total amount of rotational travel undergone by said egg and said egg holder while oscillating and causing an alarm to sound when said rotational travel undergone by said egg and said egg holder exceeds a predetermined amount of travel.
2. A device for cooking eggs as described in claim 1 in which said means for oscillating said egg holder and said egg comprise a steam turbine operated by steam pressure in said pot and a clockwork driven by said steam turbine said clockwork being arranged to first partially rotate and then release said egg holder and said egg thus setting said egg holder and said egg in oscillatory motion and in which said means for measuring said total amount of rotational travel comprise a ratchet arrangement connected to said egg holder said ratchet being arranged to rotate a wheel in a unidirectional manner as a result of the oscillatory movements of said egg holder and when said wheel has rotated a pre-set amount of rotation as a result of said oscillation of said egg holder and said eggs said wheel causes said clockwork to ring a bell.
3. A device for cooking eggs as described in claim 1 in which said means for oscillating said egg holder and said moans for measuring said d total amountof travel and causing an alarm to sound consist of an electromechanical system comprising a magnet attached to said egg holder, a stationary solenoid attached to said d lid and partly surrounding said magnet and an electronic system capable of performing the following functions: (a) allow a pulse of electric current to flow through said solenoid thus producing an impulse on said d magnet and setting said egg and said egg holder in oscillatory motion, (b) amplify rectify and integrate an AC voltage induced by movement of said magnet into said solenoid, and (c) cause an alarm to sound when the amplitude of said AC voltage, after being rectified and integrated, exceeds a pre-set amount.
4. A device for cooking eggs as described in claim 1 in which said means for oscillating said egg holder and said means for measuring said total amount of travel undergone by said egg holder and causing an alarm to sound consist of in electromechanical system comprising a magnet attached to said egg holder, a stationary solenoid attached to said lid and partially surrounding said magnet and an electronic system capable of performing the following functions:
(a) allow a pulse of electric current to flow through said solenoid thus pro-ducing an impulse on said magnet and setting said egg and said egg holder in oscillatory motion, (b) amplify an AC voltage induced by the movement of said magnet into said solenoid, (c) count the number of oscillations of said AC voltage which exceed a pre-set amplitude, and (d) cause an alarm to sound when the counted number of oscillations of said AC voltage exceeds a pre-set number.
(a) allow a pulse of electric current to flow through said solenoid thus pro-ducing an impulse on said magnet and setting said egg and said egg holder in oscillatory motion, (b) amplify an AC voltage induced by the movement of said magnet into said solenoid, (c) count the number of oscillations of said AC voltage which exceed a pre-set amplitude, and (d) cause an alarm to sound when the counted number of oscillations of said AC voltage exceeds a pre-set number.
5. A device for cooking eggs as described in claim 1 in which said elastic elements are torsion elements.
6. A device for cooking eggs as described in claim 1 in which said lid comprises an enclosed compartment in which are enclosed said means for oscillating said egg holder and said egg and said means for measuring the total amount of rotational travel undergone by said egg holder and said egg and sounding an alarm.
7. A device for cooking eggs as described in claim 1 in which said lid fits into said pot airtightly so that steam pressure can be generated in said pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA298,387A CA1102574A (en) | 1978-03-07 | 1978-03-07 | Automatic egg cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA298,387A CA1102574A (en) | 1978-03-07 | 1978-03-07 | Automatic egg cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1102574A true CA1102574A (en) | 1981-06-09 |
Family
ID=4110928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA298,387A Expired CA1102574A (en) | 1978-03-07 | 1978-03-07 | Automatic egg cooker |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1102574A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102670067A (en) * | 2012-05-25 | 2012-09-19 | 力帆实业(集团)股份有限公司 | Fixing clamp for egg |
| CN102846200A (en) * | 2012-10-13 | 2013-01-02 | 苏州征之魂专利技术服务有限公司 | High-pressure delicious egg boiler |
-
1978
- 1978-03-07 CA CA298,387A patent/CA1102574A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102670067A (en) * | 2012-05-25 | 2012-09-19 | 力帆实业(集团)股份有限公司 | Fixing clamp for egg |
| CN102846200A (en) * | 2012-10-13 | 2013-01-02 | 苏州征之魂专利技术服务有限公司 | High-pressure delicious egg boiler |
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