BE547649A - - Google Patents

Description

       

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     The invention relates to machines for the complete laundering of laundry and its particular object is a laundry laundering macaine enabling dirty and dry laundry to be transformed into clean and dry laundry in an acceptable time.



   The machine according to the invention is light in weight and simple in construction to be of low cost while being capable of performing all laundry functions, including dewatering and water removal. the end of the ravage cycle.



   By implementing the invention, an expensive system of isolation against vibrations is entirely eliminated by replacing a centrifugation following repeated accelerations and decelerations of which the maximum instantaneous speeds are limited, for the machine in question to 250 revolutions: ) '' \ .1 [1, ('meows by

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 the predetermined ratio of the transmission. The actual maximum instantaneous speeds produced by the transmission during basket acceleration are limited by the available primary motor power, the predetermined acceleration time and the unpredictable amount of the off-center laundry load.



   The real minimum instantaneous speeds during decelerations are limited by the value of the previous acceleration by the friction resistance of the transmission during deceleration; by the value of the eccentric laundry load and by the duration of the deceleration.



   In the preferred exemplary embodiment of the invention, the command succession controller powers the high speed element of the transmission for two seconds and ceases to feed for thirteen seconds. This is repeated twelve times and constitutes the complete centrifugation cycle.

   With a capacitor starting motor with a power of a third of a horse at 1750 revolutions per minute, with a gear reduction transmission in the ratio of 7 to 1, with a rotating washing basket 60 cm in diameter, mounted without elasticity horizontally and with a load of wet laundry of 3 kg dry towel, the instantaneous speed of the basket during final acceleration effectively reaches 250 revolutions per minute and the instantaneous speed of the basket during final decelerations drops to 125 revolutions per minute. The amount of water remaining in the towels is up to 190% of the dry weight of the towels; in the case of Indian cotton fabrics such as that commercially called "Indian-head", the amount of water remaining is up to 110%.

   It will be understood that the speed of 250 revolutions per minute is not limiting but is mentioned only by way of example, since the weight of the machine and other factors allow higher speeds of acceleration.



    This degree of centrifugal extraction has several compensating factors

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 1) we eliminate an expensive 1, y, itt; mv of.L; 3o'hat.ozr against 7.os vibrations; 2) the total price of the execution m 'IJlu1'cÍalrJ u () J '10 l' ;. ('ll is much less; 3) the rundeI.8nt of vGchajj <3 exceptional'. Mit 61 [: v8 according to the present invention decreases the lOl1.:'.uour of the drying cycle. such that the length of the total laundering cycle is comparable Lt -; J.ui of machines cl: 'I.:.; [;) i1LWO which employ higher centrifugation speeds and expensive isolation means against , vibrations.



   The efficiency of the acceleration and deceleration system described here for centrifugation as a means of avoiding the usual need for a vibration isolation system depends on the proper correlation between the primary motor energy available to accelerate the basket. wash load, the time allowed for acceleration and deceleration and the construction trap supporting the revolving basket. As a result of these elements, we observe that the rapid acceleration: also favors
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 the c8n:!; rifugl tion by imparting a greater radial force to the free water inside the laundry.

   For example, in a commercial embodiment of the invention, a centrifugation of four
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 minutes per acceleration and deceleration is at least ,, i effective than three J: 1inutes at constant speed of the same value maxÍJ: 1UID; in addition, a machine of 115 kg with a basket with a diameter of 60 cm, with a motor of 1750 revolutions per minute with a starting capacitor of a third of a horse driving a transmission with a reduction ratio of 7 to 1 , with two second accelerations followed by thirteen second decelerations and with polished steel level knobs resting on a ri floor;

  ide covered with linoleum, the machine is able to handle an eccentric load of 3 kg without noticeable displacement of the machine in relation to the ground,
The duration of the acceleration period is important because,

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 in the absence of sufficient acceleration time, dangerous vibrations cannot accumulate. It is the continued growth of gyration forces that moves a centrifuge washing machine across the laundry floor. The two second acceleration period according to the present invention does not provide much opportunity for establishing these turning forces or for transmitting them to the frame.

   The insertion of a rubber mount between the bearings supporting the basket shaft and the machine frame is an additional safeguard against the establishment or transmission of such turning forces.



   The correlation between the duration of the acceleration period and the value of the available acceleration energy supplied by the primary motor is important. If the laundry is distributed before acceleration so. unfavorable that the eccentric load is too large to allow the primary motor to accelerate the basket within the two seconds allowed, the gyration force transmitted to the frame will be much Less, since it varies as the square of the instantaneous speed actually reached and the basket speed will decrease rapidly to the tumbling speed at which the poor distribution tends to correct itself spontaneously.

   In the preferred embodiment of the present invention, the first two accelerations of the centrifugation cycle are followed by a sufficiently long deceleration time to provide the laundry with sufficient opportunity to distribute itself by tumbling. In this regard, it should be noted that the redistribution is favored by the fact that the laundry has been lightened by the two accelerations as a result of the significant amount of water that has been. extracted.



   If the acceleration energy of the primary motor is too low, the tank will not reach a satisfactory instantaneous speed and the centrifugation will be low. If the accelerated acceleration of the primary motor is too strong, too large a sprawling load will be inflicted and the machine's memory

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 will prove incapable of absorbing the forces of gyration. If the acceleration energy of the primary motor corre- sponds to the frame mause and the acceleration time, the frame will no longer move, regardless of the eccentric range.



   The duration of the acceleration period is still important from another point of view. According to Newton's second law, the force required to move the machine frame varies in proportion to the product of the mass of the frame times the speed at which it is moving and is inversely proportional to the length of time the force is applied.

   This means that the shorter the acceleration time, the greater the force required to move the frame, or in other words the shorter the acceleration time, plus the eccentric load and instantaneous speed can. be high in terms of risks for a given weight of the frame,
Newton's second law emphasizes the importance of the frame trap: the greater this mass, the higher the eccentric load or the instantaneous centrifugation speed can be without any displacement of the frame.

   For example, if the transmission driven by a 1750 rpm motor: .. ar minute. 'Has a reduction ratio of 1 to 7, and if the radius of the washing basket is 30 cm, the centrifugal force produced by a load eccentric will be approximately 21 times the exeentered load expressed in kg. If the support frame weighs 115 kg and the eccentric load is 5.5 kg, the frame will tend to lift off the ground, but what is more important is that the tendency to lateral displacement will be greater because the coefficient of friction between the level knobs and the ground is less than 1.



   In the preferred embodiment of the invention, however, the primary motor cannot accelerate an eccentric load of 5.5kg at an instantaneous speed of 250 revolutions per minute within the allotted time of two seconds. We can only accelerate this charge

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 an instantaneous speed of 125 revolutions per ..limited in this duration of two seconds. This means that the centrifugal force is not 115 kg, the weight of the machine, but only 29 kg and it is enough that the coefficient of friction between the level knobs and the floor is only 0.25 to prevent the displacement of the frame.



   If the frame supporting the revolving basket is not to be lifted off the floor, then the centrifugal force must be less than the total weight of the machine. Centrifugal force is the product of the radius times the square of the basket speed and the eccentric load. If the machine is not to move sideways, then the centrifugal force should be less than the product of the machine's weight and the coefficient of friction between the machine's level knobs and the ground. If a low cost of manufacture is desired, then a minimum weight machine will be established using minimum speed and ensuring minimum spinning. If you want results rather than a lower price, you will set up a;} machine with a maximum weight allowing a higher speed and better spinning.



  The speed of the basket must be increased to its maximum, for a given machine weight, in the shortest possible time in order to prevent a possibly eccentric load from establishing undesirable vibrations, after which the basket is allowed to decelerate for a period of time, which in the case of an excessive eccentric load, is capable of causing the laundry to tumble by distributing it again. If the laundry is properly distributed, it will be retained in a ring against the peripheral wall of the tub during periods of deceleration.

   A water tank could be provided on the base of the machine so that at the time of installation weight can be added by filling the tank, which would allow higher acceleration speeds, without attempting machine transport spawning, We could

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 achieve the same results by adding inexpensive weights to a machine bed platform, for example weights available at the point of use. For this purpose, inexpensive and available counterweights could be employed.



   The acceleration time should also be related to the friction reaction between the level knobs and the supporting ground. The time during which the maximum centrifugal force occurs is so short that higher values of static friction come into play rather than lower values of sliding friction. In the implementation of the present invention, the cave even appears to have an abnormally high value as a result of the phenomenon described above in application of Newton's second law. Higher acceleration speeds could be used if a sharp extension is provided in the center of the underside of each level knob to penetrate a wood or linoleum floor.

   For cement and brick floors, four small and narrow cups can be used or one large, thin bell fixed to the floor by screws or adhesive materials. The dimensions and positions of the cups and / or the bell are such as to allow the level knobs to fit there exactly and to be held securely against any horizontal movement. With such an arrangement, the maximum instantaneous centrifugation speed is limited only by the dead weight of the machine itself; by increasing the weight of the machine by counterweights or by bolting the machine permanently to the ground, a high centrifugal speed can be brought into play without undue stresses on the machine or on the ground.



   The deceleration phase of the centrifugation cycle with accelerations and decelerations is also important. After the first two accelerations, when the deceleration to tumble corrects the poor distribution, the deceleration should

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 be as low as possible in order to keep the instantaneous centrifugation speed as high as possible and to keep the centrifugal spin as high as possible.



  This means that the friction reaction of the transmission should be kept to a minimum; in the preferred embodiment of this invention, freewheel coupling means are provided in the transmission system, preferably between the final driven pulley and the rotating shaft of the washing basket.



   This reduction in transmission braking during deceleration has the complementary effect of increasing the sensitivity of the deceleration phase to the value of the load excehtrée of the washing basket. The magnitude of the deceleration tends to vary in proportion to the magnitude of the imbalance. The duration of action of disturbing gyration forces varies inversely with the magnitude of the imbalance. Such advantageous inverse proportionality is a fundamental feature of the present invention.



   As previously stated, the preferred embodiment of the invention has a 60cm diameter wash basket and a 1/3 horsepower capacitor starter motor driving a transmission including the high speed clutch, if it was. constantly actuated, 'would drive the basket at 250 revolutions per minute. In such an embodiment, the duration of the acceleration phase of the centrifugation cycle is two seconds and the duration of the deceleration phase is thirteen seconds.

   With such a deceleration time and with the maximum eccentric load that the machine can accelerate to a speed of 250 revolutions per minute at the end of the two allocated seconds, the washing basket will be slowed down only to the threshold between the tilting speeds and centrifugation; if the eccentric load is greater, the wash basket will not accelerate enough to reach the instantaneous speed of 250 revolutions per minute. The

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 The deceleration that follows will however be fast enough for the basket to return to the automatically correcting tumbling phase.



   Under average conditions, with an eccentric load of less than 0.9 kg, the basket will accelerate just to an instantaneous speed of 250 rpm and then aerate decelerated to an instantaneous speed which will not be not less than 125 revolutions per minute and the degree of spinning will be at least comparable to that which can be obtained with a centrifugation at steady state provided that the duration of the centrifugation with accelerations and decelerations is longer than one third.

   For such average conditions, a diagram of the instated speeds versus time will show a sawtooth curve; acceleration values will increase gradually-slow; the deceleration values will gradually decrease slowly; the maximum and minimum peaks will be progressively higher as will the instantaneous values of the average centrifugal force. Such phenomena characterize the present invention.



   The principle of the '' ulbutage wash basket, tilted about 5 below the horizontal, is particularly important in the case of the present invention. While half the volume is used for washing and the entire volume for drying, the tilted basket tends to eliminate dynamic imbalance and increase uniformity of distribution. It tends to reduce the forces on the bearings and tends to increase the centrifugation effect.

   All these trends increasing the ability of the accelerating and decelerating centrifugation process to compete technically with the constant speed centrifugation system requires the complementary use of an expensive vibration isolation system.



   Another aspect of the invention is to achieve a significant improvement in the efficiency of the rinse cycle. The use of the washing basket tilts, that

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 means for projecting the direct intake water: ..; ..! 1 having the ring of line and that of the principle of centrifugation accelerations and a decelerations combine to clear a .1: z-, v ,, c: trot! effective. During acceleration, d .. two sec.lnùerJ, water. rinsing system is centrifugal. truvcru 1 1.i <i; e ht, during the thirteen second deceleration ..;, 1-. force cc..z trit .i; e decreases sufi'isaruen-t for.:. 1err. and Lre at l: i 11j rJ. ' : ... hr; ü.!: '1Ku' L "l ':; 8;), 11. rinsing new clean Gt.

   This would have been equivalent to 'ul "nuccession of uptakes and expulsions of water from the sample. E. C. <:. rinsing is necessarily a dilution process, aut-.mt'.:. '': pu; .ihie, washing water soiled with the new water: .Jl '(J .f.'8, 1') 1'0cédé has been shown to be more effective than any other process (; l8 .f '; [Ji'lÏJ.s.



  Although the present description fa :: ..; "C:., A.lv.j: t ,, ei = tior; acceleration of two sucondes and a deceleration i thirteen seconds, the principle of the invention is not a no c. Limited to These times will be understood <l, il ja: Xé-.UCO, i! \ (:: V,:;: i :: ..:. 2.er operative and confjtructivec in the invention in!:. = i :: 0:!, click one of them that can act on the couporte,; t, the c, -; vu = tion L, various degrees favorable and unfavorable. '.: - 1 .. se3.on la v. .lc:,:;. '' '' she presents. The rates of the recel periods.

   Jjion and de,; c: i..1 '?: ;; i.),' L can be constant during tç> v-te. 1, 1, ¯, re '2? '- .; C1¯E. ' of C2l1 .- ;;: "'Í- îu.tïon or we ¯:,: ut le,.: é: r8 va,. <2 <; 1 and =,'. -¯ 'fe from c.ac 'r'e period can be constant or .r: iu vaxv.er. ± i 1 = n¯, ¯ - y, i Je tr v¯, rl.li8Sion p..ut be constant or we can L, ire v: ¯ ', è.'Í0r (1' ', .1.:. 0 machine to -another. The acceleration energy foul'aic., -. 1' 1e; e - .: r primary can be chosen at a value ¯ ,, - i: 1 '-': '¯il 1' 'xl; ::.', - "- or we vary the course cycle cje: .ov-.e. ec can do it vary during a -.le, the cycle of washing. The p: '- this .invention is not limited to any weight); rt: Lcu1i -; l' ¯) .: m ... a; 1 C. '' .ile, which applies it, but it matters r: tur} le ,, i (real lG ;;. v.: x1 i re, used CI = r "ie independent machine, deter ,, 1inc 1) C.:lUCOI1p; 'e operating variables.

   The diameter, the vqlmne, the Lw :: i: Lè: L.FJ1.1. and the water load of the washing basket doivunt iius :, 1 C01'j'83.:., o :: lir, ':
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 these variables.

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  Another feature of the present invention consists in the use of the theruiue gradient ùôciuieo, The drying: L gradient tllE? X'i .: l.CjllE: bridge be defined known due to the play of a (<zlE. : rGie de ;; J6chu [e;, aro; aort: lo a.cl.la to the needs of u6c., ac).



  When the lincje is very Wet, 7 h \ seoh air temperature: 1 ..:.; E can be very (fI evjQ without en.io: i>, <have the ..Yl4; e and towels jttoq7Lil? i what the Ga water content of l1n; sCJ rJ '1.tJJ) rock to the value of x (.bsox'pt.on, where r, or' '.: nt 1; to, tU1! I; 'H); C'ut1.lrfJ do the air of; ec4-Ltce must be 11l1n irrtl' m ..



  Di.1, lls the preferred embodiment of the prescribed invention, the air of the drying cycle is reset 0.1. circulation in a coüti1PG way 1. through the laundry, v. 'It till, rtt1ur and the heater. However, part of the air, 4: oar 15 $ 5, had passed through a condenser ii. water wall, the function of which is to remove from the system as many calories as it has received from the heater, or part of the air, a 5) roxir, ia-Live Hllt 10 if is vented to the atmosphere. When we use the latter system, we have found that it is necor: l. c-ndalle to remove: r the 10% of the air in question at the outlet of the fan to coiaaunicate a high speed l) er.:lettant: to use horn, 1C1e 0011,1ul t an expensive flexible hose '10U with a diameter of 25 mm.

   This is much more advanced and acceptable than the conventional process which uses rigid 10 cm thick lethal.



  Regardless of the method used to remove the heat
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 latent air circuit, it was found that the drying efficiency
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 is improved with the start-up of the drying cycle is accompanied
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 high thermal energy and high level (saturation.
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 We y, 0 ..: 1 ^ v, r: nt by one or more means or combinations of these
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 means. With the condenser valve de-energized or the damper towards
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 The heat exchanger and the fan are on during the entire cycle of final centrifugation at acceleration and deceleration.

   No

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   only this promotes centrifugation by reducing the kinematic viscosity of the water in the laundry, but also it promotes subsequent drying by evaporation by raising both the thermal energy and the saturation level.



  However, if, towards the end of the centrifugation cycle, these values are still too low, they can be raised by dedicating the first two creamers or three minutes of the evaporative drying cycle with tumbling by simply continuing to hold the water valve. condenser de-energized or the outlet flap to closed atmosphere. This initial heating can be done by the highest wattage allowed on the electrical circuit to be used.



  Such a high wattage can be maintained even during the first part of the actual evaporative drying cycle which theoretically begins, as soon as the condenser valve is energized or the outlet flap to the atmosphere is opened. At this theoretical start point of evaporative drying, the temperature of the outlet air from the drying chamber begins to fall and continues to fall for most of the drying cycle, even though the high wattage heater continues to be used. However, when the water content of the laundry is near the point of reabsorption, the temperature of the exhaust air rises rapidly. This is true thermal gradient drying.



   - If the construction and operating conditions so require, the thermal drying curve, representing the temperature of the outlet air as a function of time, can be increased by the use of a thermal accumulator or by the gradual decrease duwattage of the heat exchanger. This added weight allows for greater speed or greater eccentric load.



     In a preferred embodiment of the present invention, the heat exchanger heater apparatus consists of three separate 2000 watt elements which can be

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 electrically connected. This provides flexibility of operation such that the wattage can be determined in advance and, as the water content of the laundry approaches the point of reabsorption, the wattage can be automatically reduced to a minimum.



   In another preferred form of the invention, the heater is a combination of an exchanger and an accumulator.



   Cells are targets for either 115 volts or 230 volts.



   If the low voltage is only available, the accumulator can be supplied with energy before and during the washing, rinsing and centrifugation cycles, with the result that the duration of the drying cycle is correspondingly shortened and, with the condition of the thermal gradient is improved. cited
In addition to the above advantages, thermal gradient drying has another important advantage which does not have any known conventional dryer, that of allowing the use of a device comprising a control by inversion of the thermal variation to complete the drying cycle. . Heretofore, a few clothes dryers have used the increase in temperature at the end of the drying cycle as a command to complete the cycle.

   This involves a pre-adjustable thermostat in the shop or by hand that operates at one temperature only and that temperature at best can only be a rough approximation of the final temperature. It is a well-known fact that different fabrics and different laundry loads as well as different operating temperatures will result in very different end temperatures. With the classic thermal control and its fixed setting, the air temperature at the start of the drying cycle must be kept below the predetermined final temperature, otherwise the said basic control will stop the drying cycle shortly after its start. start-up.



   With the control by inversion of thermal variation made possible by thermal gradient drying, the sensor servo-mechanism does not need to be sensitive to a fixed temperature but, on the contrary, must be sensitive to the temperature.

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 passage from a decreasing temperature to an increasing temperature. This means that such a detector works equally well for all fabrics, for all loads and for all temperature values.



   In the preferred embodiment of the present invention and when operating on articles such as terrycloth, the wattage of the heater is initially set to 6000 watts. The timer switch supplies power to the heater when the accelerate and decelerate spin cycle starts. The outlet air temperature rises and continues to rise until the condenser valve is energized or the outlet flap to the atmosphere is opened. The rise in temperature closes the circuit, closes the control contacts by reversing the thermal variation and the resulting drop in temperature when the evaporative drying begins opens the contacts.

   Soon after, the timer switch opened the circuits for powering its own timer motor. When the thermal gradient drying function is completed and the outlet air temperature begins to rise, the thermal change reversal control contacts are closed by this rise. After that the timer motor is energized again, the timer switch activates the 2000 watt element instead of the 6000 watt element.



  For the next and final period, which can be set in advance to a duration of 8 to 20 minutes, the fabrics complete their slow, thorough and thorough drying to their reabsorption moisture content.



   Thus, the complementary objects of the invention are: to establish a laundry machine which is light so as to be of a reduced price; establishing a laundry machine in which water is extracted from the laundry by the use of several accelerated rotations the duration of which is controlled; ensure the extraction of water from the laundry inside the revolving basket

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      of a machine by several accelerated rotations with pulses of short duration so as to prevent any appreciable vibration of the machine;

   use for the machine, a heating element whose energy is reduced several times during the drying cycle, under the control of a thermostat and a single chronometric control device or by a centrifugal control means. and, in general, to establish a laundry machine which is simple in construction, reliable in operation and economical to manufacture.



   Other characteristics of the invention will be explained in detail or will appear in the description which follows in the appended drawing in which: FIG. 1 is a front view of a washing machine comprising the characteristics of the invention; Figure 2 is a section taken on line 2-2 of Figure 1; Figure 3 is a section on the line 3-3 of Figure 2; Figure 4 shows a construction similar to that shown in Figure 2 and shows another form of the invention; Figure 5 is a section on the line 5-5 of Figure 4; Fig. 6 is a view showing a table showing the operations performed by the machine; Fig. 7 is a view of a circuit diagram showing the various electrical circuits and the elements employed in the machine;

   FIG. 8 is a view of the drive mechanism similar to that shown in FIG. 3, but according to a variant; Figure 9 is a side view corresponding to Figure 8;

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   the. Fig. 10 is a view of a timer disc for producing a series of trichinae operations; Fig. 11 is a view of a timer disk for producing another series of machine operations; Figure 12 is a cutaway view similar to that shown in Figure 5 and showing the addition of an inertia switch; Fig. 13 is a table showing the range of temperatures inside the basket for a desirable drying process;

   Fig. 14 is a graph of the acceleration curve for the basket when the operation is controlled by the timer disk of Fig. 11; and figure 15 was a section of a support foot used at each corner of the machine,
The machine of the present invention, shown in Figures 1 to 3, comprises a base plinth composed of front and rear U-sections 10 and 11 and side plates 12 and 13. The side plates form a support for a tub 14 having sides. supports 15 which are fixed to the side plates by suitable means represented by a series of bolts 16. The tank has a double wall 17 in which two bearings 18 are supported by a sleeve 19.

   The bearings support a shaft 21 carrying a pulley 22 and constitute the only support for a basket 23 having a perforated wall 24, the part located near the peripheral wall of which has perforations, while the remote part is solid. Washing, rinsing and spinning take place at the back of the basket where perforations are desirable, while the unperforated front part prevents the hot air introduced from escaping, this air being forced to pass through. back in contact with the tumbling laundry.

   The side walls 12 and 13 of the base are inclined backwards. approximately 7, so as to support a tank and a rotor

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 the axis of which is inclined backwards approximately 7 below the horizontal.



   The pedestal can support a reservoir 25 which is a waterproof cover 26 and which can be filled with water to provide ballast for the pedestal, if desired. By the use of the tank, the machine is of low weight for transport and, the water added in the tank aunement. installing the machine increases the weight of the base by approximately
45 kg. Each corner of the plinth is provided with a threaded stud 27. receiving a locking nut 28 by which the foot is adjusted for leveling the machine. The head 29 of the stud has friction pads 31 which are attached to it; and who help. prevent the machine from moving when it is mounted on a smooth surface.



   The rear part of the tank has a drain opening 32 which is connected to a pump 33 driven by a motor.
34 carried on the tank by a support 35. The drain opening is connected to a pipe 36 which leads to a membrane switch 37 mounted on a support 38 on the rear wall of the tank, the pipe 36 and the switch 37 establish a control that shuts off the water when a desired height is reached inside the tank.



   The basket 23 has a front opening 39 determined by a rim 41 facing outwards and the tank has an annular part 42 which projects inwards and extends above the rim 41. The central part of the zone 42 which extending inward has an outwardly facing flange 43 defining a central opening surrounded by an inwardly projecting portion 44 of a door 45 in which a window 46 can be provided. The door is supported. on hinges 47 and is fixed by a lock actuated by

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 a handle 48 of the classic ma @ era. ES is introduced into the tank and the basket through the tube 31 disposed above the access opening.



   A motor 52 is mounted on a support 53 on the upper left side of the tank 14 when viewed from the rear and a fan 54 is mounted on the upper right side of this tank. An overflow chamber or duct 55 is provided in the peripheral wall of the tank in the vicinity of its upper rear part. The duct has an opening 56 connected to the inlet opening of the fan 54.

   The outlet of the fan is connected by a duct 57 which extends through the top and the front upper part of the tank to an opening 58 in the part 42 of this tank (it extends inwardly. the air is admitted by the direct duct 57.vent in the basket towards the center of its rear wall. The fan is actuated by a motor 61 cooled by a propeller 62 mounted on its shaft. The fan, as shown in FIG. 3, comprises an outlet opening 63 through which 10% of the circulating air is passed, if an air condenser is not used.

   This air can be sent directly to the atmosphere, preferably through a small diameter pipe so that approximately a fraction of 0.425 m / min out of the 4.25 m 3 / min of circulating air is discharged to the air. atmosphere.



  If a greater volume of air is circulated per minute, it will be understood that the 10% fraction of this air will exceed the flow rate of 0.425 m3 per minute mentioned above. Thus a high saturation 10% air green is desirable to maintain the drying of the laundry inside the stack at a high temperature and high humidity. When a water spray tube 64 is used in the duct portion 55 of the vessel to cool its wall, only a small portion of the circulating air meets the cooled wall to allow its moisture to condense and thus results in a temperature drying

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 high and high moisture content.



   The engine 52 has two pulleys 65 and 66, the pulley
65 being fixed to the shaft and the pulley 66 being fixed thereto by a clutch 67 actuated by a solenoid. A belt 68 which passes over pulley 65 and over an idle pulley 69, drives a belt 71 from an idle pulley 72 which is fixed to the pulley 69 by means of a freewheel clutch. The belt 71 passes over the pulley 22 and over the pulley 66. When the drive is by the belt 68 and the pulley 69, the pulley 22 and the basket are driven at about 48 revolutions per minute. When, however, the clutch 67 drives the pulley 66, a belt drive 71 exists alone, which drives the pulley 22 and the basket at high speed, approximately at
250 revolutions per minute, the pulley 72 rotating faster than the pulley 69.

   In this way, by actuating the solenoid 67, the basket 23 can be driven at low speed and at high speed,
A dial 75, at the upper left corner of the machine, can be set for the entire wash, rinse, spin and dry cycle, while a dial 76, at the upper right corner of machine, can be set for boiling or hot water and for the air required for the laundry operation. The casing 77 is mounted from the front over the tank and is fixed in any suitable manner to the base composed of the elements 10, 11, 12 and 13.

   When the condenser tube 64 is removed and air is sent to atmosphere through the fan passage 63, a solenoid shutter 70 is opened on the duct to allow ambient air to be drawn into the duct. 'interior atmosphere of the tank in order to replace the quantity discharged.



   Referring to Figures 4 and 5, there is shown a; another form of laundry machine, in which a rear panel 80 has a rear wall 81 of the walls

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 sides 82 which extend towards the had. The rear screen has a panel 83 which fixes the ion therein from the outer edge and is spaced there near the center to receive and support a sleeve 84. The sleeve provides two bearings 85 through which passes a shaft 86 which supports the rear. rotating basket 87. A tub 88 has supports 89 which are fixed to the rear wall 81, by bolts 91.

   The center of the tank has a gague 92 attached to this tank and sealed around the shaft 86 by a round section ring or similar seal 93. A pulley 94 is attached to the shaft 86 at the rear of the panel 81. Two supports 95 are provided at the front of the vessel and are attached to posts 96 extending in an inclined direction and attached by suitable means preferably by bolts to the side wall 82 extending forward. of the rear panel. An envelope 97 is fixed to the side panels 82 and to the rear base leaving the top which is covered by a top 98 open, when it is desired to make a complete set, but one game: remove this top when it is desired to establish a machine under the counter.

   This same envelope can be used with the machine shown in Figures 1 to 3.



   A front panel 99 is fixed to the tank by a separable seal ring 101, the panel comprising an annular boss 103 which extends outwardly and which has a cross-sectional shape: ci-circular, Towards the center with respect at this boss, a rim 104 forms an inlet opening through which the laundry is passed into the basket. The end of the cylindrical flange 104 extends outwardly at 105 and supports a resilient seal member 106 against which a door 107 abuts.



  The door is similar to the door 45 and is attached to the front face of the casing 97. The part 108 of the door which extends inward is not joined by the glass 46 shown in Figure 1.



   Several straps 109 extend through the boss 103 to support three heating elements 111 of the sub-type.

 <Desc / Clms Page number 21>

 
 EMI21.1
 gatiie,? on reflector! 'i2 and wi insulating reflector z Each of the resistance elements has aus' age 111 preferably fast of 2000 watta, so ;; ue:: The radiated heat supplied by this small element can be controlled. Basket t37 has a central opening 11 r9. outside which the surlace 1 5 has a series of openings forming a perforated wall through which the cnaleuy is sent directly to the basket by radiation from the heating elements.

   A. Wire mesh (not shown)
 EMI21.2
 could be placed on the surfaces a bos; aï. "ekj and the opening of the uanier could be increased to extend to the point 116 An air outlet passage 117 ..would have been provided on the tank 88 and one can connect a ventilator 118 of low tacit air to it to evacuate 110% of the air which circulates the interior of the tank by the operation of the rotor. When air is thus removed, a shutter actuated by a ool (criolde 1 19 opens to allow air to be sucked inside the tank in a quantity corresponding to cult of the exhaust air.
 EMI21.3
 



  0 ,. oonprendre that it comes within the scope of the invention to employ a projection tube of #au z1 close to the p:,. r.:z of the tank to establish a condensation surface which acts on a small fraction of the 'air. Water is condensed from this small fraction of air without losing a noticeable amount of
 EMI21.4
 sensible heat of). ' ersea? 1.31e of the air which is thus retained a high temperature and a high level of humidity.



   A drain tube 122 is attached to the rear lower end of the tank and, connected to a drain pump 123
 EMI21.5
 on engine 124, the pump has an oil-assisted clutch for connection to engine 124, when a drain valve is not used in conduit 122, but a drain valve
 EMI21.6
 actuated by oct soleroid used on the drain tube 122, the clutch a, 3olu, -zlo5: de s, ¯u be removed and the pump driven continuously.

   The fan has a shaft 125 with two pulleys, one of which 126 is a driven pulley, while the other

 <Desc / Clms Page number 22>

 
 EMI22.1
 12 "1" '7, .¯; j 1) 1 'l. 'tJI. \) \. 1 'llL \ :.) .. "11,' - <1.> .¯: ¯¯.-E, z ...: w,,;. 1: '(' 1 It, 11 >,,; oI l,> T <io =, -i .:; ',' .. 1, 'e <' 1 ;;. 1, i;>.; ..,.>., <. l >., i ', <..1: 1 1, w; 1; <,; J1 r: lJ.o.1.' V7 i. '.,' - ;, t. 'j' l ,.



  !. (W x'.¯1¯iîW "L'L L ;; L 1 -! J, ,, J'l '" i Lt; Lioiin' ..'- .. LL; 1 ';!.' (" ;, '1, (,; ,,:, (;.



  1t.> 01ÜÜ ';>. L; u: The tree of U.ittl.t E: 1;> si, L <; -1: .e Cjvtil't'Cïi 1) 1,! 'O..Í -r; l.'. W ..L? 2 1-. pulley 12 (, 'eL: ¯1.E2' uuu -julie 132, du iy => 1 .. 1'01 .. <. (; li:) 1'0, ::. Olt ':; "1' a '¯.î'1Jî' ;. 133:;, <1 Jf:;, uL.le: t.: 1..¯u 1.Ir :. '; pulley 1.:.4. Belt;> .ls e around follb pulley 127: 0 .: lU 'Vditilatcur shaft 125, so that.d 1.'.: o; r :: 'works and iue solenoid clutch 1 , ;;:, en; rise, 1 pulley 129 drives the belt 131 direct.-had to operate 1r basket 2. t; ri..1.nde speed, a pro iJaativ2e-rt '. 2O turns .Jar, .1inute A second belt 135 is mounted on motor pulley 128, on pulley 134, and on a pulley 13o on shaft 125 which drives fan 118.

   The belt 135 drives the pulley 134 which drives the pulley 132 to thereby drive the belt 131 rotating the janier at a speed of about
 EMI22.2
 45 revolutions per minute. Thus, by engaging or disengaging the
 EMI22.3
 pulley in, one achieves low speed or high speed basket operation.
 EMI22.4
 



  When the condenser tube 121 is used, the fan
 EMI22.5
 The lator l 13 and the shutter 119 actuated by solenoid are 8ulpriruted and the air e., t agitated by the ¯atro.inē¯¯elt of the basket, :) n includes only the adjustable support feet 29 and the tank 25 can be used on the bottom of the frame of the strip as: on the :: Ucüi118 re.:i% presented to the threads.'L: .l'C: S 1 to 3. In any of the, aacÜin8s described above, these elements are ao c-completed
 EMI22.6
 lightweight and s, vibration isolation tern is
 EMI22.7
 removes.

   We n1tc!: Luse only one ninuterie for cō¯: n :: under the :::.,:. Ite d ¯.¯ V> Ôlà ,, iOfi5 of the .ac.> Ine, It suffices to electrical elements. ',:.; Ü!; "le]. ver the timer 20-r cōî ¯¯, .nder the sequence of o': I'3.LiOr18 and it follows that of the weight e., t .,; a5; rim: and that the manufacturing price eL; t conriii, irabie; icnL reduced.

 <Desc / Clms Page number 23>

 
 EMI23.1
 



  This rcuc'Jou <lu 'i'1 :, o> .l;. <\ .1 jJ..i. <I..l, i;., L. , of a new process studied for e; r <: r: <.i.,> <; i '<a> i; from i. i,, i, j <:, proceeds includes the application.; <j; 6.tô <:. the couples of roc'J.jLon,>;> Lit, 'produce accJlGi pulses uliofiz ia basket i > ;. ii <1: <;. =, very short durations separated by de> i int'jrval .. '. Gfj j> Ju>; leI11, 'G, cec over a notable period of time.

   For example, the shopping cart
 EMI23.2
 can be trained for a period of half a second to two seconds, three times during each 45 second pulse of the timer or during each 30 second pulse
 EMI23.3
 depending on the setting of the timer ùei.ips pulses and the ability of the basket to slow down if the laundry is to be held
 EMI23.4
 against its peripheral wall. If the line is to be tilted after each acceleration, the time intervals between acceleration should be lengthened. The intervals between
 EMI23.5
 acceleration pulses are a.> pro, riyùati-ve ..; <ixt de -! 3 seconds when the timer has 45 second pulses.

   Thus, in a time of 4 minutes, the basket will be subjected to 16 acceleration pulses for 2 seconds. Due to the fact that a significant amount of water will be present in the fabric at the start of the spin period, the time interval allowed will not be.
 EMI23.6
 sufficient for the basket to reach its maximum J.1 speed, shown here as 250 revolutions per minute. After the initial acceleration pulses, sufficient water will be removed from the laundry for maximum acceleration to occur.
 EMI23.7
 during each subsequent acceleration pulse. é, o:

  > ie the basket spins freely, the speed will not lower enough, when the drive device stops receiving energy, to allow the laundry to tumble between the accelerating pulses.
 EMI23.8
 ration. As a result, during most of the spin cycle in the preferred sequence of operations, the laundry is retained in U1. ring against the wall? 2érij; hôriqu <J of the basket and the water contained in the laundry is expelled outside towards the wall with each acceleration pulse.

   In this way.

 <Desc / Clms Page number 24>

 a desired amount 1, water is removed from the laundry without continuous asplication of the torque to the basket and causing undesirable vibration to the machine,
The heat is., Reference supplied to the basket at the start of the period of the acceleration pulses. The presence of high heat during the accelerated rotations was desirable to reduce the viscosity of the water contained within the laundry so that it was more easily drained to and through the peripheral wall of the basket.

   In the time of three minutes, the water existing inside some fabrics will be of the order of 500 gr of water for 50Ô gr of fabric, i.e. a retention of 100% and it will be removed from the laundry during the cycle. of drying in a reasonable time. For 3 kg of terrycloth towels, it was found that the washing cycle with the extraction period takes about 25 minutes and that the drying period which follows, including final drying and cooling, will be in the order of 55 minutes, so that the entire cycle will be completed in 80 minutes.



   The three heating elements are represented by the machine described above with reference to Figures 4 and 5, have their counterpart in the duct 57 of the fan 54 shown in Figures 1 to 3. These three heating elements are indicated by the numbers reference 136, 137, 138 and can be plugged in as a 6000 watt heater, a 4000 watt heater and a 2000 watt heater, Strong heat is supplied inside the basket at the start of the cycle when the laundry is saturated with water and the heat is reduced when using the 4000 watt heater to lower the temperature as the laundry dries,

   this temperature being further lowered when the 2000 watt heater is used to complete the drying cycle of the laundry and prepare it for removal. Thus, the temperature inside the basket is preferably lowered as the water content of the laundry decreases. This gives the advantage of having

 <Desc / Clms Page number 25>

 
 EMI25.1
 a. ::.: '1': lJ .. (0 C,:. 1 .. - ':.' J2 V - '.., ".1 ...... / ¯> o = <: '<, ..>> x> - -'; .'-. .. 1,.; /.;,.: i fast of <1. ';; ,, u, 1., c. 1 << . <'L't "H t ab, .11r .; u, 1'0 rtjrj; J 1 <% .... =., T) vcure qLü le 1illc; ü: ai.C24'.



  If we rC'iLx'C; li fi; 'ure 6, we find there t.iÚ (..; r8.::J:,LIUfJ of operation .unt which can correspond Li one' lU,; 1c ':' 11 ': ue back aohim-.s described. On Ze'¯? .t'f: (U (32 'that, in lu ï'. '..' '. C.'. '1',. ni .: of figures 4 and 5, 2., .¯apar e: it.heating by radiation can be;:. Used to heat the l3.rze e û 'ea, u and not the. Tub and basket during the wash cycle, which is desirable so that their
 EMI25.2
 temperature is as high as possible in order to decrease the viscosity of the water contained in order to extract as much water as possible from the laundry during the acceleration pulses.

   The motor for driving the basket, as represented by the strip 150, is running during all the work except during the interruption 151 which occurs at the end of the spin period. Note that the timer motor is operated at the same time, as indicated by strip 152, and is interrupted, as indicated, by cuts 153 and 154 during the drying cycle.

     Water is introduced into the tank and a wash cycle is performed, as indicated by band 155. The rinse cycles for which water is sprayed and filled are indicated by band 156. The drain valve is open where the pump is activated after the wash cycle, as indicated by strip 157, with an interruption at point 158 to ensure full water rinsing towards the end of the rinsing operation.



  The pump is operated during the remainder of the extraction or drying cycle. The accelerated pulse extraction is preferably used during the rinse cycle. as seen from the graph, the acceleration pulse,
 EMI25.3
 indicated by the iot "accelex" and the bW a1e 160, occurs after the emptying and then pedant the period of rinsing by projection.



   The heating elements are powered after the cycle
 EMI25.4
 rinsing, COI: 1.! J.e indicated by bands 1,59 and 161, at; -101116nt

 <Desc / Clms Page number 26>

 where the fan is operated as inlicated by the band 162.



  At the end of the extraction period, the heating elements cease to be energized when the drive motor is stopped to prevent the application of a concentration of heat to the laundry when the basket is not rotating. When the engine is restarted, the heating elements are switched on and at this time the condenser is activated or the shutter open, as shown by strip 164.

   The timer motor continues to run for a predetermined time, after which it stops running as indicated by the interrupted strip at 153, so that either timer control or thermal variation reversal control can take place for this. : 'complete the operating cycle which, towards the end of the drying cycle, will re-energize the timer motor and cause a final or cool-down period. Instead of control by timer! 3 or by inverting the thermal variation, an adjustable timer can be used which can be set by the operator for a fixed period followed by a final or cooling period, the duration of which is also adjustable. .



   In this arrangement, a thermostat in the inlet duct will re-energize the timer motor and turn on a 2000 watt heater, which is indicated by interrupt 165 in band 159. Then the timer motor will shut off. will stop, as indicated by cut 154 in the timer motor band, and the thermostat will close its contacts again when the temperature reaches a predetermined value in order to thereby re-energize the timer, shut off the heater to 4000 watts and re-energize the heater at 2000 watts.



  The timer motor will continue to run for an adjustable length of time, after which the whole machine will stop receiving power and so will the timer motor.



  After the rinsing operation, and when the water has been drained from the tank, successive acceleration pulses take place, as indicated by band 166. This occurs for a short period.

 <Desc / Clms Page number 27>

 
 EMI27.1
 time, like incUI; .11; E.: L .., :: axs.



  The graphi. ,, shows you z # usiJi that 1 ',;: 3 ÓJ.G'tf: H1t: .. heaters can be supplied at the start of the cycle, as il1d.i. -yé by the bands 167 and 168 when the heater is in :. .x :: C; .1.di ::. tion is
 EMI27.2
 used to heat water, laundry and the basket hung on
 EMI27.3
 wash cycle. When an Nlinuterie device is used to advance one pulse every 45 seconds, blister acceleration pulse lasts 3J); Jroxim .. ', tiVGr :, have 1: cE, == ,, -] f; 1/2 on and 13 1/2 seconds off, so that 'l' '; tr0 timer pulses will be in three T's: 1iwJ.t' ;; j or aue 12
 EMI27.4
 acceleration pulses will occur in a three-minute extraction period.
 EMI27.5
 



  Referring to figure 7, we see an 8cLt: a electrical connections for controlling, -, - \ 'rations of the machine from a single ¯La ..- ry device. The timer device which is of normal shape and; j-i; 1, 1, 'is not shown here comprises contacts 170 to 178 which are' .0 tioned J.J: .. r cams by means of known devices. The C '". ,,:'. Cts 170 CO :: l: .1andent the engine 52 to initiate the work according to: band 950 inter-
 EMI27.6
 broken at point 151. The contacts 171 actuate via a solenoid 181 auxiliary contacts which are
 EMI27.7
 closed for 1 1/2 seconds and open for 15 1/2 seconds, which occurs three times for each l.linutë pulse: 45 seconds. Contacts 172 ct ¯aïzzeYlt water supply solenoid 182.

   Contacts 173 actuate the ;; ō ¯naid of the drain v: ':: r4', e or pump clutch 183 Contacts 174 actuate the timer control motor 185. Contacts 175 '3 .. li: J ': lltnt the water heater 186. The co lt8.ct .: 176 actioMt the heater e 1 8 7 to. 4000 watts. Ie; contacta 177 r = t 1 ,, = ii, e; t solenolde lû du -let or cie la V '.. Jll.'3 j; 1, =, d., Ca1-rd.n:; c, r, while% .It, contacts them; 173 operate the fan Jtt;. '. 1' or the solenoid of a, .. J.lbr :: 1yage with pulley 1; 1..r; i = the c, v; j, t¯ is represented by a question mark ,,,. i / u c.¯r on. 1 '. line in the device according to Figures 4 and 5 where the shutter is left iron, l. * Ié,; andis that the air is agitated by the functiol1Uel1 <::: nt of the basket.

   In

 <Desc / Clms Page number 28>

 
 EMI28.1
 derivation on the cjj, act 170 uoot ïraē3 thermostats 191 and 192 of the bilo.I type: 6 or of the bellows type: j3 .. open a circuit when a predeter traapéruture n00 e. ;; t reached. Thermostat 19.1 is represented as type a 300-: but thermostat 192 is represented as type 1500. 01, will understand that the other type thermostats I had to be e; lÙOJ '': 0, types at 3000 and 150 n 'was; 1 = iJHli, uéwï c! .u ", title of 0Y.6I! 1f.LLC.



  The CQ! I \ I11Uta.t <:: heart of meat from t;.; : xo.tu.c le, 3 had connected in circuit to the 'thermostats 191 and 192 and') had to be moved from the "aperitif" position 194 to the "hot" position 195 yu to the "very hot" position 196. This is a manual three-position switch commonly used for controlling the temperature of the air and water in the machine. When in position " hot ", a brus contc.ctel1r 1!; '; in encantre contacted them 195 and 198.



  This allows the power supply of 186 to 2000 watts heater with control by the tknrr..o: ae, t 1 g2, whose contacts open
 EMI28.2
 at a temperature of about 180. When he's at a position
 EMI28.3
 liters hot "the arm c'Jl1tactE: L r 1 '37 establishes a bypass for
 EMI28.4
 contacts 196, which allows the heater 187 to
 EMI28.5
 4000w # itts to be conr. aided by the c, m; acts 176, thus read, to the heater has 2000 wat -s to be co 1.11 iandé by the contact
 EMI28.6
 175. The contact arm also meets the contact 199 which is in series with the themmostat 191 whose contacts open at
 EMI28.7
 the temperature of about 300. Thus at low heating the
 EMI28.8
 temperature does not rise above 1500 and when fully heated the temperature does not rise above 300.

   Note that in the circuit containing the contacts 172 for the solenoid
 EMI28.9
 of water control, the contacts 201 of a switch controlled by membrane of a switch C, u "and4 by weight or anal are used for co: unander the height of the water to 11, ,,, rdu basket. "" will notice that in this arrangement the 3,) léllol: des water ': 1' ... 'hle and cold water are eliminated,, :: ais on cO.ip! 10nd.ra qU 'j, 1: a can be provided if desired.

   It is one of the characters
 EMI28.10
 of the present invention to employ a simple science valve

 <Desc / Clms Page number 29>

 
 EMI29.1
 182 connected to a.: Eu.l leads qui eiJi; attached to the V, .il J 'of hot and cold water, as used on a :)., jn1;,.; o swivels in the laundry tubs, so that the operator can
 EMI29.2
 manually adjust 10. the desired water temperature before der.l.1rrage of the operation. Cel: L eliminates solcnolde powered water Vee,. Nrw which is not only costly May ::; which adds constraints for the operation of the machine. As the operator
 EMI29.3
 must load and start the machine, it is all ciuì:, 1 simple to connect the water temperature, it is, .0 l (; nt 111.



   It will be noted that a main switch 202 is shown in the diagram, this switch possibly being the switch.
 EMI29.4
 is triggered on the rotating timer device which is used in the conventional way and it can be the switch on the
 EMI29.5
 longitudinal displacement timer, the contacts of which are open when the cover device reaches the set point.

   In a circuit in broken lines, contacts 203 have been shown.
 EMI29.6
 actuated by the: = rce cel1trifl1t: 8 and used when the radiation cnaleur, eoi.i :, e rc.ssaté i, the n8.cili1l8 of: îiy-ūres 4 and 5, is used ::: ée for interrupt the supply of the heating element in case of breaks or allon G..C: rlt3 of the court '(' goose when the rotation of the pan-er is interrupted.-.- or natafa7¯eme : it reduced. This prevents the deterioration of the laundry which would occur if the heat of the radiation were direct :: c'te-ent: ahli-fu <re to the laundry while it is not tumbled. In addition, a re iaii; 204 is actuated by contacts 176 to establish and break the circuit to the heating element 187 to 4000 watts.

   The timer device is constructed in such a way
 EMI29.7
 As acres begins the drying operation, with switch 193 in the "very hot" position, contacts 175 and 176 are closed to establish maximum heat for the combined heating units at 2000 and 4000 watts.

   When the temperature of the air delivered by the fan duct, in which the
 EMI29.8
 therMOstats 1 9i and 192 rises above a predetermined value, for example 300 the thermostat 191 contacts

 <Desc / Clms Page number 30>

 vrcnt and switch to alter -ive. ent in the open and closed positions to prevent the temperature from rising above
300 .After a predetermined time, contacts 175 are opened, leaving the heater powered on.
4000 watts, controlled by thermostat 151 to 300.

   Towards the end of the drying cycle, contacts 176 are open and the contacts
175 are closed, which switches off the heating element at
4000 watts and feeds the heating element, 186 to 2000 watts.



   The heating element is controlled by thermostat 192 which will open if the supply air exceeds 150. As shown in the operating graph, the amount of time the heater 186 is powered up is set for any final desired period during which the final drying, cooling and resting of the fabric takes place.



   The price of the machine is greatly reduced by the reduction in its weight and by the use of rotational pulses with acceleration for the extraction, by the elimination of the suspension system with vibration isolation which is very expensive, by the use, of the single timer when until now two were required and by the elimination of the solenoid controlled water valve when using manually adjustable valves which exist in laundry tubs or which can be provided when installing the machine.



  In view of the fact that the drying cycle is controlled by the separate adjustable timer switch, by the timer control and thermal variation reversal processes, this one hour timer can be used for the accomplishment of 'work lasting 80 minutes. When only the time is used to control the drying cycle with a single timer, it is necessary, but must be accomplished - a washing and drying cycle of 80 minutes, to provide a time control device which will run each time for a period of time. more than 80 minutes. This will require different transmissions for the engine of the pressed crumbs, as

 <Desc / Clms Page number 31>

 
 EMI31.1
 will understand any tucnnician.



  It will be understood from uius that, from the machine r: [Jr6; '.. nt6e in figures 1 1. 3,: This condensate is eliminated when 10 of the air is sent to the atmosphere> iiÉire and that during this time the shutter is open when its: a. : z! oï.a this fed at the - <> lLa, created by the value of the water condenser. This was true rJ. <J.8 ',; Í for the construction shown in fi. 'Llre8 4- and 5 "the V (.) 1 <, t, j: ;;" Üt open when the small fan delivers to 1 rjt where; u: .re aoï, roxir.ative ..: e 10 de l air contained. When using a condenser, the fan and damper are eliminated and a valve with
 EMI31.2
 water actio: 'xed by solenoid to control the ùrriv0t; of water to the condenser.

   Only the idler pulley will then be used having a smooth surface in contact with the back of the belt, the use of which is desirable to ensure a better wrap.
 EMI31.3
 of the belt on the '') oulie8 d 'ent: caine.'; 1 .nt.



  If we are z-. fé> ;, e 1 = figure 8, cell.-this shows a driving device in which a belt 211 drives the main pulley 94 from the driving pulley 125 which is driven by a motor 213 through the intermediary of 'a reducer 212. The speed reducer 212, as shown in figure
 EMI31.4
 9, has four different speeds co5 ,, snczées by solenoids 214, 215, 216 and 217. The. solenoid 214 cora ::: vnde le mëcanisae vJi? r establish the speed of c ;; 3, bu.t; aj = e of the order of 48 revolutions per minute during the washing and drying operations.

   Solenoids 215, 216 and 217 control the reduction system
 EMI31.5
 for cor¯ .-: runirt? ex to the basket of speeds of 100, 175 and 250 revolutions per minute. It will be understood that these speeds are only indicated
 EMI31.6
 example and that they 0 (;: ll \ T'¯1ï ', varied according to the size of the basket, the weight of the machine and other factors that limit
 EMI31.7
 18. maximum dragging speed of the basket. Maximum speed is produced by the!) :: "<.ut function of speed reducer 212 when solenoid 217 is energized, while lower speeds are produced when solenoid 215 and 216 are energized.

   The use of different speeds for extraction is desirable.

 <Desc / Clms Page number 32>

 
 EMI32.1
 because a couple bigger! ' 1 E ::: 'j, dj ,; 10j..i '': J '1 AI': '' ..r: t 'f' r '(; 1.011 initial of basket y? ¯irlct The ut:, 8. Tunu'ir () 1'l ¯ ¯:; u tr ::, i,;? T the greatest weight. A "<'; [J1'.ru 11 ç ,, tiu ri, t ¯ o, r <: r: ¯ iv ..: .t removed, a torque noindre e;: t tiire, YES 'accelerate the paper, so that this acceleration can be done at a higher speed. A large torque available accelerates the basket to a greater speed in the short interval of its application,
 EMI32.2
 when the load is greatest.

   The creasing by the transmission mechanism can be done at regular intervals or at variable intervals, whichever has been found most desirable to prevent any unfortunate vibration imposed on the machine as the basket picks up speed. .



   In Figure 10 there is shown a timer disc which rotates for a period of time which may be three, four or five minutes required for the extraction operation. The disc is provided with cam bosses 218 which, in the example given, would correspond to a certain duration, for example a fraction of a second or a second.



  A cam boss 219 would correspond to a slightly longer duration, for example one and a half seconds, while the other bosses 221 would correspond to a longer duration of the order of two seconds. The spacing of the bosses is such as to allow the basket to slow down to the desired degree and it may correspond to an interval of eight to fifteen seconds, to a greater or lesser wing interval. Slowing down of the basket is desirable to add an effect to the pulling operation to force water back from the tissues which are retained in a ring against the peripheral wall during the slowing down period.



   In Figure 11, there is shown a similar cam where the cam bosses 222 achieve similar times, of the order of two seconds in the example given above, but the bosses 218 and 219 can be used at the head of bosses 222 to establish a variable duration of acceleration at

 <Desc / Clms Page number 33>

 
 EMI33.1
 start of 1 opers, t. <cG cen1irifûgnt: i.oll. On (read in the area indicated by the numeral 223 there is no boss. This is desirable to allow the basket to slow down and be driven for a short time at tumbling speed.
 EMI33.2
 so that li linje can be distributed more ::.

   Lmiform0j :: ent against the wall pe: ¯v; a crack so '.1.1!.: M can use a .; high speed of acceleration during the last part of the centrifugation operation. During the initial part of the extraction cycle, the greater amount of water is removed from the laundry, while in the latter part of the cycle higher speeds are required to remove some of the water remaining in the laundry.



   Due to the possibility of an imbalance in the load, this tumbling phase, after removing a substantial amount of water from the laundry ,. is desirable so that the acceleration pulses evenly distribute the laundry in a ring against the peripheral wall and so that a higher speed can be used.



   To make such a command clearly understood, reference will be made to FIG. 14 in which the first acceleration, indicated at 235, will produce a speed appreciably slower than the maximum speed :, after which the slowing down time, indicated at 236, will return the basket to the tumbling speed which will operate for the same duration as the acceleration and deceleration period to redistribute the laundry. Then, the cycle is repeated as indicated at 237 with a slightly increasing speed and with tumbling then intervening to distribute the line when a significant quantity of water has been extracted therefrom.
 EMI33.3
 



  Ensui'i; e; the next five accelerations, Indic ..:, used in 238, will accelerate and decelerate the basket to bring it each time closer to full speed by increasing the speed at the end of the deceleration period each time. During this period, the laundry is suspended near the peripheral wall of the basket. The last five accelerations, indi-
 EMI33.4
 quées in 239. amet1l1t the basket, it will fill it quickly; ::: "e and raise

 <Desc / Clms Page number 34>

 
 EMI34.1
 the deceleration rate is seen from the c <> .- ", 21.u.ition of the removal of water from the binder.

   E.lGulte, the ally ,,; t tr¯ - "tr, co ... ¯e indicated in 240, and the cycle dj: 3éc11O..o: 0 rooster emce 1 the rtec: .e tumbling, as playful at 241. The introduction of two tumbling cycles at the start of the extraction period produces a lower basket speed while removing a significant amount of water. The tumbling which then takes place distributes the laundry in such a way. that after the two tumbling periods the laundry is distributed more evenly inside the gauler and that high speed accelerations have less risk of producing a movement of the machine which could otherwise occur in the case the presence of a significant eccentric load.



   While it has been found that the short intervals of acceleration have been sufficient to prevent any unwanted vibration of the machine under the action of excessive loads not
 EMI34.2
 released, it was found that it could be, -; sira'ie ci 'fit an inertial actuated switch to the construction in the case
 EMI34.3
 where materials which should not be washed -) ar la! :::. ac, 1Íne z have been introduced. This eiT9êcl1e excessive vibration and movement of the ac¯uine relative to the ground. The interruptear 224 which has been shown is 12011té on the side of the ¯.ac.¯ine with a plunger 225 disposed at the v> isînage of 1.'11 weight 226;:; ",, :) erldu. Lille tie 227 whose extract ±> 'a7érie <: rc e # ,: articulated 1! Ml support 228 ur le', eubLe.

   Qum1d ur.t; excessive vibration is üi.Jo-: e at the ': .c.LÍne. a <1 '? 1? "f which: ...' ,, 1" it Cc3..ci.C # r the machine>,;. G-] ics .3. :) 1, this rJ '' Jlace f (.: mt ucti0l1lle 1 ', - er-ruptezr 224 r., le .'.- Jo.1., n 226 ",," 1; makes move the E> IOÎIJ,' F9LW 225 inwards T > yes, open the coficacts <1 ': iritE: rIW tcur. Un 0: 1 .:'. ',.'. tl (, he,. "... '. 1.'út 22c yc? t (i : i3 (; 1 '=: bzz, U'è' la ¯; iz.oi du; liy-f3) OIJl '' '' ',)' JC] l,: l: J0. oiel '.:, l ,; ".'1 ',' ¯ 'l; l' le C ', 11'oJ, de .1.rjnl; n :: c,.' LJ) t {; Ur and <11ù] '(111 ( 10 ': i,; <; r, I'.: ', J'I'- l "' l '" 1 jj. ¯jl' 1 '.

   AJ: "" "" b, canclif; dl.1fl; 1.1,1 --icu.L, i e: ..you; in? 1 ro. 'Î. = I ±' Î 1., 00 .l: ':,; "1 na # 1 ,,.;,' C '-'Ii t: .. in t,; 1.' f. 011 l'Cc: .le i.; c tio: W unt) 011 ::. ' 1.stay

 <Desc / Clms Page number 35>

 
 EMI35.1
 with a pulse of 1 '.' !. ni 'ldU the nachine co "r: I1Ü" i, i'rJ'c-t.1C>: tlH.c, r a 1.' to. iii-pi.a> ,; 1. on: 12.1. ', Ü.iltG', When the machine is running it. r1? taVc¯t¯k 1 e. linje is better off, or who, o: .e. ea the extraction cGntrL: 'ùt; 0 during the 2: 1 pulse intervals. acceleration <5r. tion au: ':, (juted without vibration of the machine. Un av, .rl.taz; e import. Lut in obtained here one carries out between the piece of furniture and J.es' boL> ton; d,:;: level 1 .i ;;; elastic bond in the horizontal direction ut not éi; ¯¯1; ti: ja <, <1; j¯, i ,; the vertical direction.

   In Figure 15, we. a represents a level button comprising a t; au, jozm'-iāct S .3U fixed Î, uii <; , washer 23J which is welded to a rubber block 252. A CUUl) cÙlfii 233-, is placed on the block 232, the bottom of this block being welded to the inner bottom of the cup. A space 234 is provided between the rubber block and the cup in the vicinity of the washer 231 to allow horizontal movement between the cup and the washer.
 EMI35.2
 By giving the possibility of a 101Xvement a.uorti between the washer 231 and the cup 233, all the gyration forces will be absorbed.



  Another means is thus established to prevent the unwanted movement of the furniture under extremely slow unfavorable conditions.



  By use of the cup, the movement is reduced - to 0.25 mm
 EMI35.3
 under conditions where there would be a displacement) ient of 12.5 lrlrn, The machine has a very long life, it is light and its manufacture is little aoaztevzse..r7¯1c: only requires 'a minimum of maneuvers ,, as a result of its Dim} Jli.ci t.:5 both in its construction and in the control systems used there.



  The machine uses a high temperature and high temperature drying method.
 EMI35.4
 ahigh moisture content, the tem, JeraturG being ab ..is, ée when the laundry becomes drier, if it is easy to switch off the heating elements or by the use of an accmuulator of heat, stores heat during the wash cycle on a 115 volt circuit and uses this heat with that supplied
 EMI35.5
 during the operation of: 3chÇJ.ge. It: r.b8ult an efi icient drying of the linGe, although a higher content a moisture introduced at the beginning bX as a result of the lower speed of conditioning, so that the complete cycle washing, rinsing and drying is

 <Desc / Clms Page number 36>

 
Dan beyond acceptable limits.

   For some tissue types, a full cycle can be done in 60 or 65 minutes, while. for other types additional time will be required. It has been found, for example, that knowing with three heating elements at 2000 watts, the initial use of full power at 6000 watts, when the laundry was wet, results in the most favorable drying time. Make sure that the laundry gets richer; when dry, 2000 watts are switched off and drying is continued at 4000 watts, During the last 15 minutes 2000 watts are used for drying and this period also achieves cooling allowing removal immediate laundry outside the basket.



   After the initial application of heat to the basket preferably at the time of the extraction period, the heat control is maintained by the flour mill until the centrifugation operation takes place. After the laundry has been saturated with heat, as shown by the elevation a of the curve in Figure 13, the condenser is activated, which lowers the temperature inside the basket, as shown in b, and the com ande by reversing the thermal variation is carried out while the timer is stopped. The temperature will then drop until a roughly uniform temperature is reached during the drying period, as shown in c.

   Towards the end of the drying period, the temperature will rise, as shown in d, and at this point the control by reversing the thermal variation causes the cut-out and the timer is started again to operate. The timer can be initially set to have a run period at the 2000 watt level varying from 5 to
20 minutes depending on the type of laundry to be filtered in the laundering. It will be understood that the computerized control system referred to above can be used in place of the thermal variation inversion control or that a manual timer can be used to control the heating at the levels of 6000, 4000. and 2000 watts.

 <Desc / Clms Page number 37>

 



   It will be understood that the pulleys 72 and 69 of Figure 3 could be mounted on the same end or on their opposite ends of the armature shaft of a second motor, the armature shaft taking the position of the shaft. pulleys 72 and 69. A freewheel clutch connects pulley 69 to the armature shaft allowing the shaft to advance the pulley. A single pulley 66 is employed on the motor shaft 52 on which it is fixed. The belt 71 passes over the pulley 22. When the motor 52 is powered, the belt
68 drives the pulleys 69 and 72 and the pulley 22 at tumbling speed. When the second motor is energized, while the motor 52 is also energized, it drives the belt 71 to rotate the pulley 22 at high speed.

   If you want a high speed of 250 revolutions per minute, the reduction between the pulleys
72 and 22 will be 7 to 1. If the tumbling speed is of the order of 50 revolutions per minute, the reduction between pulleys 66 and 69 is 5 to 1. Both motors can be of the auxiliary winding type. - liar, which reduces the price to a minimum and since the second motor is operated at short intervals, its centrifugal switch can be omitted, which further reduces the price of the drive mechanism for the machine. is not only inexpensive but has the advantage of requiring only a minimum of maneuvering on standard parts which can be obtained immediately.



   A type of thermostatic switch employed in the execution of the invention is a switch in which after separation of the contacts the bi-metallic element is able to move so that in the event of an inverse variation in temperature the contacts are firm, which establishes a short and constant time for the closing of the luff contacts of the temperature reversal. Such a switch is well known in the art and has a bi-metallic switch part - helically wound. It turns a shaft when the temperature varies and which has

 <Desc / Clms Page number 38>

 acts by friction on the movable contacts whose movement is controlled by a stop member.


    

Claims (1)

R E V E N D I C A T I O N S - 1) A laundry machine, comprising a rotating basket for the laundry to be washed and a device for accelerating this basket at small time intervals separated by larger intervals in order to extract the water by centrifugation of the laundry at each time. acceleration in such a way that, when the lie Ee becomes lighter, it is reduced by 1. centrifugal fores on the internal surface of the basket and does not fall from this surface by tumbling making the intermediate periods between the acceleration 2) A laundry machine according to claim 1, comprising a friction device 1 supporting 1-. achine to reduce the possibility of the achin to move on the ground hanging down the short intervals of acceleration. 3) A laundry bag according to claim 2, wherein the device - friction comprises two members of elastic material fixed to one another. 4) A method of extracting water from the laundry, comprising rotating a basket in which the laundry is supported in a wet state and periodically accelerating the basket for short periods at the same time as torque is applied motor, while larger intervals separate the acceleration intervals, allowing the basket to rotate freely after each pulse acceleration so that after one or more initial pulse acceleration when a significant amount of water is removed laundry speed is maintained in the intervals between acceleration periods to hold the laundry outward against the inside of the basket where. it will remain during each subsequent pulse as well as during the intervals between two pulses. 5) A method of extracting water from the rotating laundry in a basket, consisting in applying to the basket with a predetermined torque acceleration pulses separated by more ' <Desc / Clms Page number 39> large intervals of teaps, as pulses for that initial accelerations .; , are carried out below a maximum speed, the water being extracted by centrifugation of the laundry while the speed increases with each pulse until the laundry is held against the peripheral wall of the basket without c, lbuter for the interval between the pulses, so that the extraction takes place causing each acceleration pulse, while the laundry is held against the inner periphery of the parnier. 6) Method of extracting water from the laundry contained in a rotating basket, consisting in accelerating the basket repeatedly for a period ranging from half a second to two seconds with the same torque, while an interval of ten to fifteen seconds separate two consecutive pulses, the duration being chosen in relation to the torque so that the initial accelerations do not make the basket turn at maximum speed but remove a significant weight of water from the laundry so that then selling the ten to fifteen second intervals between the acceleration pulses, the laundry is held against the inner peripheral wall of the basket. 7) A washing machine, comprising a rotating basket for the laundry, motor, a two-speed transmission interposed between the motor and the said basket to drive the latter quickly., Low and high speed and a A control system for powering this motor, said control system operating the motor at high speed repeatedly for short intervals separated by larger intervals to extract water by centrifugation from the laundry at each high speed maneuver. 8) A laundering machine according to claim 7, wherein the motor, the basket and the two-speed transmission rotate freely when the motor is no longer supplied, so that the laundry is kept on. the periphery of the rotor by centrifugal force during the intervals between short <Desc / Clms Page number 40> periods of high speed operation. 9) A laundry machine according to claim 7, wherein an air circulation system is provided for the basket at the same time as a heating system in this basket at high and reduced power, a circuit for initially connecting the elements. heater to provide maximum heat and a EMI40.1 Thermostatic control device for switching off the heating appliance at low power and then for switching off the heating appliance at high power by activating the heating appliance at low power, in order to gradually reduce the heat supplied when the laundry becomes drier. 10) A laundry machine, comprising a rotating basket, a device for rotating this basket, an air circulation system for this basket; high wattage and low wattage heaters in the air circulation system, a motor driven timer control device in the heaters circuit, a thermostatic device in the circuit to power the heater motor control unit and a device in the EMI40.2 circuit for connecting the.; 1d, .ie; its of c¯, .ufe in order to provide the maximum heat to the debate of the cycle of = é <; ade, c ") r whenever the iÉ" Ùeàl 'of uiiiuterie is c uT3c: e., rFs.lir, .. wtc. p = 1r the ther ... 05static device qU.J..ld the circulating air reaches a temperature: redet (;: r.1iné for 1.> ire advance the timer in order to cut the heating element to low power and to stop the timer motor, this thermostatic member still restarts the motor and cuts the high-power heater to reconnect the low-power heater, allowing the timer to then complete a new cycle of rotation. II) Dams a laundry machine according to claim 10, a device is provided on the timer for setting the final running time for a determined period. 12) A laundry machine according to claim 10, <Desc / Clms Page number 41> comprising a device for evacuating approximately 10% of the circulating air towards the atmosphere. 13) A laundry machine according to claim 12, comprising a shutter which is open when air is discharged to the atmosphere. 14) A laundry machine according to claim 10, comprising a condensing device on the path of the circulating air, placed so as to act on only part of the air. 15) A laundry machine comprising in combination. a basket for the laundry, a motor, a two-speed transmission interposed between the motor and the basket to drive the basket at high speed and at low speed, a control device for supplying said motor, this control device acting on this motor at high speed repeatedly / short time intervals separated by larger intervals to centrifuge the water from the laundry at each high speed operation, a tub around this basket, the front face of the tank with annular heating elements that provide low, medium and high heat, an annular reflector around these heating elements and an isolation device for this reflector. 16) A laundry machine, according to claim 15, comprising a blower for discharging to the atmosphere approximately 10% of the circulating air and a shutter system that is opened when the air is discharged to the atmosphere. 17) A laundering machine according to claim 15, comprising a condenser inside the tank, with which a part of the air cooperates, and a device for rotating the basket in order to agitate the air. inside while the heater is providing radiant heat to the basket and its contents. 18) A laundry machine, comprising in combination a rotating basket for the laundry to be washed, a device for driving this basket at a tumbling speed and at a speed <Desc / Clms Page number 42> larger and a device for accelerating the basket by applying the drive device to; higher speeds during large intervals of time to extract by centrifugation the water from the laundry in each acceleration interval, so that the laundry gradually decreases in weight. 19. A laundry machine according to claim 18, comprising means for driving said basket - a tumbling speed during the intervals between the acceleration periods. 20) A laundry machine as claimed in claim 18, wherein the small acceleration intervals have a variable duration at least during the initial acceleration periods. 21. A laundry machine according to claim 18, comprising means for varying the torque applied and for increasing the speed applied during the extraction period. * 22) A laundry machine comprising in combination a rotating basket for the laundry to be washed, a device for accelerating this basket for short intervals of time separated by larger intervals to extract water by centrifugation from the laundry at each acceleration of so that the laundry becomes lighter and at the same time it is retained by centrifugal force against the internal face of the basket and remains without falling or tumbling during the intervals between accelerations so that the water contained in the laundry s 'escapes through the peripheral wall each time there is acceleration. 23) A laundry machine according to claim 22, comprising a device for varying the intervals of action during the initial part of the extraction period. 24) A washing machine according to claim 22, comprising a device for reversing the flow and the speed of the drive system during the period of extraction in order to trough the speed; drive only;., nd the need for torque is reduced. <Desc / Clms Page number 43> 25) A laundry machine, comprising in combination a rotating basket for the laundry, a motor, a variable speed transmission mounted between the motor and the basket for driving the basket at low speed and at high speed, a control system for operating this basket by said high speed transmission repeatedly for short intervals of time and a control device for operating this basket through the low speed transmission during; a longer period of time following each of these short intervals. 26). A laundry machine according to claim 25 including means for varying the dart of these short intervals. 27) A laundry machine according to claim 25, comprising a device for varying in reverse directions the torque and the speed applied by this transmission during high speed operation in order to reduce the torque and increase the speed. when the short high speed intervals follow one another. 28) A laundry machine comprising in combination a frame, a tank mounted rigidly on the frame, a rotating basket inside ,, - the tank, a. device for driving this basket at a tumbling speed and a device for accelerating this basket for short periods of time separated by longer time intervals, in order to extract water from the laundry by centrifugation. r claim 29) A laundry machine according to which the longer time intervals are of a duration commensurate with the freedom of the basket to slow down so as to retain the laundry in a ring against the peripheral wall between the short intervals d acceleration at least after the first acceleration. 30) A laundry machine according to claim 29, comprising a device for driving the basket:. a tumbling speed between repeated periods of acceleration. EMI43.1 31) A laundry line e0i1lpre1Ltnt G.l CO.rlb: L: 1..dI30n <Desc / Clms Page number 44> a frame, a tank supported by the frame, a rotating basket inside this tank, a device for driving this basket at the tumbling speed, a device for accelerating this basket for short periods of time separated by more granls time intervals in order to extract water from the laundry by centrifugation and an inertia switch inside the machine to interrupt its operation in the event of excessive vibration. 32) A laundry machine, comprising a combination of a frame, a tub supported by the frame, a rotating basket. inside this tank, a device for driving this basket at a tumbling speed, a device for accelerating this basket for a period sufficiently short to prevent any appreciable vibration from establishing itself in the machine, a device for drive this basket at a tumbling speed, a device for repeating the acceleration and tumbling operations when desirable and a device for accelerating the basket for short periods followed by longer intervals where the basket slows down but maintains sufficient speed to prevent the laundry from tipping over so that it is retained in a ring against the peripheral wall of the basket. 33) A laundry machine, comprising a combination of a frame, a support on said frame, a rotating basket mounted on this support, a first motor comprising two pulleys on its shaft, one of which is of the freewheel type, a second motor having a pulley, a belt connecting the pulley of the second motor to the freewheel pulley, a pulley on the basket and a belt connecting the other pulley of the pair of pulleys on the first motor to the pulley of the basket in such a way that the first motor, when supplied, drives the basket at high speed faster than the second motor, while the latter drives the basket through the first motor at reduced speed when the first is not supplied. 34) A laundry machine according to claim 33, wherein the second motor remains energized when the first motor is energized. <Desc / Clms Page number 45> EMI45.1 35) UllO ..r; hj'lG du 1) lo.nc111:; .. '::;,:;' J, ': 0.: \> 1.' ':': '' 1,2. - {-4-, i) '. Jlirr turning, un <1is);> o ..: i di for 81 :, üctu.UJ:' a cycle of Ja / i; e, rinsing and e, Jf30rÙCG a circuit 1 <: 1,; 16 do circuLlt: iO1 xo: er the air through the said basket, a device of 'Y.'f') u7¯8 .. :: Ylt of air, l : û18 the circuit, a system of Gt.mvï :: se Udl1 .. this circuit, a cyst that reduces the lmr.1idity in this circuit, -a co -i ,, ride device to operate the heating system and the 8 ;; <; tùw.j of repression before: zat the end of the sorage operation in order to ':. ". u:.:; .0Jlte: l' la 1; '- ;;". 1 J0rature and l 'humidity of the air in circulation and t a r' 'Î.JI) O: .. itif cO; .bland,: mt the device which reduces 1';>. L;> ii: -1.le when the temperature and 1 '; = ix.iidi.té dt, air s. ;; 011t ± 1; .j- "-. ;; i.Jfizi, <; ', -'; i'b in a way 1 # achieve the,: c "ira.e, ¯m- '1 c' 1 J .... t ..., -, r! '..' f 'and; ¯¯1 =; 1. = ;, àj¯; j of high humidity. zij) A .machine of,) '1. îC'l' ("., '" 8': 1: 1C'J: C1 1,>. claim 35e wherein the device reducing l 'huc3-i; lit :. is a condenseul' which acts only on part of the air an ',: ircu1c'ÍJion. 37) A Kelon 1 laundering machine; ,, revr -. = - ic¯¯3¯¯ 351 in which the device reaulcant the "1..Ll: Li ti e h.tlt air outlet C01.lLandée. by shutter :: 0, through which we evacuate. ltlEr¯:, ': ï't, a small fraction of the circulating air G.:..l1S the machine. R: Bi 31..111Q 1-lachine de; b1 :, nchis ;;:. 3.se revolving basket subject to EMI45.2 acceleration pulses for short intervals separated by larger deceleration intervals. Approved: 6 words added