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Publication numberUS2468919 A
Publication typeGrant
Publication dateMay 3, 1949
Filing dateJan 4, 1946
Priority dateJan 18, 1945
Publication numberUS 2468919 A, US 2468919A, US-A-2468919, US2468919 A, US2468919A
InventorsBrotman Hyman D
Original AssigneeBrotman Hyman D
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Washing machine drive
US 2468919 A
Abstract  available in
Images(7)
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Claims  available in
Description  (OCR text may contain errors)

H. D. BROTMAN WASHING MACHINE DRIVE May 3, 1949.

7 Sheets-Sheet 1 Filed Jan; 4, 1946 mmvrox. Hy a fl Brainy.

y 1949- H. D. .BROTMAN 2,468,919

. WASHING MACHINE D'RIVE Filed Jan. 4, 1946' I 7 Sheets-Sheet 2 XI 11/ lI/IIII IN V EN TOR.

J7 hie/r 1: ,3 ,Br, i/ zn.

H. D. BROTMAN I WASHING MACHINE DRIVE May 3, 1949.

7 She'ets-Shegt 3 Filed Jan. 4, 1946 a INVENTOR. fly/rzarz E ,E'ralnazr.

y 1949. H.'D. BROTMAN 2,

WASHING MACHINE DRIVE Filed Jan. 4, @946 v 7 Sheets-Sheet 4 y 1949- H. D. BROTMAN 2,468,919

WASHING MACHINE DRIVE I Filed Jan. 4, 1946 7 shets sheet 5 Jrrmmwys.

H. D. BROTMAN WASHING MACHINE DRIVE May 3, 1949.

Filed Jan. 4, 1946 7 Sheets-Sheet 6 INVENTOR. fl yman ,fl firoi'malz C ,7 r Tax/IE Y y 1949' H; D. BROTMAN v 2,468,919

WASHING MACHINE DRIVE Filed Jan. 4, 1946 7 Shets-Sheet 7 r LL 117 W 144 193A v g W w I [a 2-5 a Q :74 17 as: 22

, 2/ INVENTOR. 27, flfl/r/d/r iii iva.

, vain-u.

'of drying the clothes.

.Patented May 1949 UNITED: srArEs PATENT OFFICE WASHING MACHINE DRIVE Hyman D. Brotman Detrolt, Mich. Application January 4, 1946, Serial No. 639,065

1 The invention relates to clothes washing machines and it has particular relation to a ma chine of automatic character having a definite cycle of operation.

In certain respects the invention is related to and constitutes an improvement over that em-v bodied in my copending application for patent,

Serial No. 573,362, filed January 18, 1945. In the copending application for patent the washing machine includes a clothes receiving cylinder which is rotated in one direction throu'gh'a plurality of revolutions and then in the other dithis operation continues through the washing and rinsing stages. After completion of the last rinsing operation, the cylinder is rotated at a rela-- tively high speed in one direction forthefpurpose The same general principle of operation is embodied in the present invention in that the cylinder is first rotated in one direction and then in the other through the washing and rinsing stages, and then is rotated in one:

high speed for drydirection only at a relatively ing the clothes. V

An important object of the present invention is to provide an improved washing machine having power operated drive means for rotating the cylinder together with means for transmitting from the drive means to the clothes receiving cylinder rotational motion at slow speed repeatedly first in one direction and then in another direction through a predetermined slow speed stage, the machine also being provided with high speed means for transmitting from the drive means to the cylinder rotational motion at relatively high speed in a single direction, the construction and operation being such that the high speed means is not brought into operation until after theslow Claims. (c1. 74-1) provide an improved washingmachine of this type wherein a simpler and less expensive means is provided for effecting the periodic reversal of rotation of the cylinder.

Another object of the invention is to provide an improved reversing mechanism having alternately engageable clutches wherein means are 4 provided for positively initiating a releasing movement of each Tclutch at a predetermined time.

Another objectof the invention is to provide an improved type of clutch arrangement wherein rection through a plurality of revolutions, and

Just preceding the time the clutch element is to be shifted, spring means for moving the clutch speed stage and at a time when the cylinder is rotating at slow speed in the same direction as it rotates at high speed. Preferably this controlled operation of the cylinderfrom the primary drive means, such as an electric motor, is accornplished by shifting the drive from a slow speed gear means to a high speed gear means in such manner and at such time that the shift will occur only after the slow speed stage when the slow is energized so as to effect rapid movement of the clutch element.

Another object of the invention is to provide in a mechanism of the type designated a means operating automatically to prevent rotation of the cylinder at the high, drying speed excepting when the cylinder is turning in the same direction at the end of the last rinsing stage as the cylinder is to rotate in the drying stage.

Another object of. the invention is to provide an.

improved, resilient connecting means between the driving unit and the clothes washing cylinder.

- Another object of the invention is to provide an driving unit for an automatic washing machine constructed according to one form of the inspeed gear means is rotating in the same direction as the high speed gear means.

A further object of the present invention is to vention;

Fig. 2 is a cross-sectional view taken substantially along the line 2-2 of Fig. 1;

Fig. 3 is a cross-sectional view taken substantially along the line 3-3 of Fig. 2;

Fig. 4 is a fragmentary cross-sectional view illustrating a clutch synchronizing look as seen in the direction indicated by the arrow 4 in Fig. 2;

Fig. 5 is an end view partly in section as seen from the right side of Fig. 4;

Fig. 6 is a cross-sectional view taken substantially along the line 8-6 of Fig. 1;

Fig. '1 is a cross-sectional view taken substantially along the line 1-1 of Fig. 2;

Fig. 8 is an end view on a larger scale of one of the spring actuating cams for movingthe reversing clutch shown on the lower cam shaft in Fig. 2;

Fig. 9 is an end view of the cam for positively initiating movement of the reversing clutch and which is also mounted on the lower cam shaft in Fig. 2 to the left of the spring actuating cams;

Fig. 10 is a view of the cam shown by Fig. 9 as seen along the line Ill-i0 of Fig. 9;

Fig. 11 is a view similar to Fig. 10 but showing the cam as seen when turned through 90;

Fig. 12 is a side view of the cam arrangement for operating the high speed clutch;

Fig. 13 is an end view of the construction shown by Fig. 12 as seen along the line l3-l3 of Fig. 12;

Fig. 14 is a view of one of the spring actuating cams as seen along the line 14-44 of Fig. 12;

Fig. 15 is an end view of the other spring actuating cam as seen along the line l5-l5 of Fig. 12;

Fig. 16 is a view of one of the cam elements as seen along the line l'6l5 of Fig. 12;

Fig. 1'1 is a cross-sectional view on a larger scale taken substantially along the line 11-!1 of Fig. 18 is a cross-sectional view taken substantially along the line iii-I8 of Fig. 1;

Fig. 19 is a cross-sectional view taken substantially along the line 19-19 of Fig. 17;

Fig. 20 is a cross-sectional view taken substantially along the line 20-20 of Fig. 17;

Fig. 21 illustrates a development of the water control cam and fingers adapted to co-operate therewith; and,

Fig. 22 illustrates a vertical section of the drive pulley for operating the driving unit.

Referring to Fig. 1. a part of the washing machine cabinet is indicated at 1'0 and such cabinet may include two compartments divided by partition means ll, That compartment to the left of the partition II contains a tub and a rotatable cylinder such, for instance, as embodied in my copending application for patent, while the compartment to the right of the partition provides a space for a drive unit indicated generally at l2. This drive unit generally comprises a'casing [4 having a plurality of ears l5 secured by bolts 18 to the partition. Hence, the drive unit may be readily released from the partition merely by releasing the bolts.

For driving the unit, an electric motor is provided but not shown, and this motor drives a belt l8 trained about a relatively large pulley l9 which is secured to one end of a shaft 20 journalled in bearings 2| and 22 provided in opposed walls of the casing. Within the casing, as best shown by Fig. 2,-the shaft 20 has a worm 24 meshing with a worm wheel 25 which is keyed as indicated at 26 to a shaft 21 disposed crosswise of the shaft 20 and above it. Such shaft 21 has one end journalled in a boss portion 28 forming a part of one of the walls of the casing while the other endof the shaft is journalled in a boss portion 29 integral with a pan or side cover element3ll secured to the casing by bolts 3|. 1 i

The shaft 21 is provided with spaced bevel gears and 36 which are loose on the shaft and such bevel gears respectively have clutch teeth 31 and 4 38 on their adjacent end faces. Each of these clutch type bevel gears is adapted to be engaged by a clutch sleeve 40 splined on the shaft 21 so that the sleeve may be axially moved on the shaft while being driven thereby and such sleeve has clutch teeth 4| and 42 on opposite ends for engaging the teeth 31 and 38. From this it follows that if the clutch sleeve is moved in one direction so as to engage the teeth 39 and 42, the gear 35 will be driven whereas if the sleeve is moved in the other direction, the teeth 31 and 4| will engage and the gear 38 will be driven. The gears 35 and 36 mesh with a ring type bevel gear 44 but the engagement is at diametrically opposite sides of the ring gear so that the ring gear will be driven in opposite directions depending upon which bevel gear is driven by shaft 21.

Now directing attention to Fig. 1 again, the ring gear 44 has a hub portion 45 iournalled in a bearing 46 forming part of the casing 12 and such hub has clutch teeth 48 on its end opposite the gear. The teeth 49 are adapted to engage clutch teeth 49 on a second clutch sleeve 51 and this clutch sleeve has a spline engagement 52 with a shaft 53 having its inner end Journalled in a bearing 54 within the gear hub 45. At its opposite end the sleeve 5| has clutch teeth 56 which are engageable with clutch teeth 51 on one end face of a relatively large gear 59 journalled on the shaft 53. Such gear 59 meshes with a smaller pinion 60 which is keyed to the shaft 20 and consequently the large gear 59 is constantly being rotated at a relatively higher speed in relation to worm reduction 24-25 at all times.

The shaft 53 extends through the casing wall next to the partition H and is journalled in a bearing 64 in such wall, and outwardly of the wall it has a splined engagement 65 with a sleeve 66. This sleeve fits within an outer sleeve 91 and between the sleeves a cylindrical layer of rubber 69 is provided which is bonded to both sleeves so that the driving connection between the shaft and outer sleeve 61 is of resilient character. The sleeve 61 is adapted by suitable means to be connected to the washing machine cylinder so that the cylinder will be turned by shaft 53 as the latter is driven.

At its inner end the sleeve 81 is ,iournalled in a bearing 1| mounted ,in a hub 12 having a portion 14 extending through the partition I l. Such hub is rigidly connected to the partition by a flange 15 at that side of the partition where the clothes cylinder is located and by a nut 16 threaded on the opposite end of the portion 14 and which is located at the opposite side of the partition.

' .While the hub 12 provides a bearing support for the sleeve shaft 61, it is to be noted that the bearing 1| is of such character that the sleeve may move so as to align itself with the axis of the clothes cylinder. A suitable sealing means 11 is provided in the hub 12 and next to the shaft 81 so as to prevent water from leaking along the shaft,

It may be noted in general now that if the clutch sleeve 40 is in one position so that the ring gear 44 is being driven in one direction, the washing machine cylinder will be rotated providing the clutch sleeve BI is in engagement with the ring gear and the direction of rotation will depend upon Whether or not the clutch sleeve 40 is in engagement with the teeth on 'the bevel gear 45 or in engagement with the teeth on the bevel gear 39. Reversing rotation of the ring gear will continue at all times but if the clutch sleeve 5| isshifted so as to engage the teeth 56 with the teeth 51 on the large pinion 69, the cylinder will Ithen be rotated in one direction only and at relatively high speed. During the washing and rinsing stages of the machine operation,

, rection, cam means are provided for shifting the clutch sleeve 48 at predetermined intervals for obtaining this reversal of rotation.- Referring again to Fig. 2 in particular, a cam shaft 88 is provided below the shaft 21 and this shaft is journalled in opposing side walls of the casing as. indicated at 8| and 82. Outwardlyof the casing at one side, the shaft 88 has a worm 84 as best shown byFig. 3, and this worm meshes I with a second worm 85 mounted on ya vertically disposed shaft 81 located externally of the easing and journalled in bearing portions 88 and 89 secured respectively to the casing and cover 38. Such shaft 81 intermediate its upper and lower ends has a worm wheel 98 thereon which meshes with a worm 9i on an external end of shaft 21.

From this it should follow that shaft 21 will drive shaft-31 and in turn shaft 81 will drive the cam shaft 88.

Within the casing the shaft 88 has a shell 95 provided with end portions 96 and 91 slidably journalled on the shaft and this shell has an extension 98 on its upper side. Such extension is rigidly secured as by screws 99 to a clutch shifting bar I8I having, as best shown by Fig. 7, a fork I82 straddling the sleeve 48 and disposed in an annular groove I84 in such sleeve. This relationship between the shell 95 on shaft 88 and the bar I 8| engaging the sleeve 48, holds the shell 95 against turing on the shaft. The clutch sleeve shifting bar I8I extends downwardly within the that drying may I The two tapers HI and III merely provide means for moving the roller at each half turn of the shaft 88 while the rims H8 and III provide means for positively holding the roller against a return axial movement until the roller is ready to engage the next taper. Thus while one rim is in contact with the roller, the clutch sleeve 48 is positively held in one engaged position and then as the roller contacts the next taper, movement of the clutch sleeve is positively initiated and after it is shifted to engagement with the other bevel gear, the roller maintains its axial shell 95 and at its lower end is provided with a roller I86 andv this roller co-operates with a cam indicated generally at--I81. This cam is provided for the purpose of positively initiating disen-' gagement of the'teeth M or teeth 42, as the case may be, from the teeth on the bevel gears and 36, and this is desirable particularly in View. of the fact that there is considerable frictional resistance to the disengagement of the teeth.

With reference now to Figs. 9, 10 and 11, the cam is drivingly secured and keyed to a sleeve I88 fastened to the shaft and such cam includes two somewhat less than semicircular rim portions H8 and III which are separated at their ends by gaps H2 and H3. Such semicircular rim portions are axially adjacent and'not in the same radial plane, but the left side of the rim portion H8, as seen in Fig. 11, is approximately in the radial plane of the right side of rimportion III. One end of the cam portion H8 has a bevel or taper H5 leading to the gap I I3 while the other rim portion has a ta er H6 leading to the gap H2. Assuming that the cam is turning around the axis of the shaft 88 and that the roller is in contact with the side of rim H8, such contact will continue until the gap H2 reaches the roller. As the gap passes the roller. the cam H6 engages the roller and shifts it axially until it is at the side of rim III and then it travels along the side of this rim until it reaches the gap H3. Then when the gap H3 passes the roller, the taper H5 shifts the roller'until it is again in position to roll along the side of rim H8.

position at the side of the other rim until it engages the next taper on the cam.

While the two tapers H6 and H6 thus provide a means for shifting the clutch sleeve 48, the movement is relatively slow and it is not desirout of engagement by the tapers for thereason that the load would be all on a small portion of the teeth just before complete disengagement occurs. It is desirable that the tapers on the cam merely initiate disengagement of the clutch teeth so as to overcome the considerable forces of friction between the teeth and then that the teeth be rapidly disengaged and the sleeve moved quickly from one position to thejother. The means for effecting this rapid shifting of the clutch sleeve comprises a pair of cam elements- I28 and I2I secured on the sleeve I88, and such cam elements are identical but displaced relatively 180".

As best shown by Figs. 2 and8, each cam element has an axially extending rim I22 extending substantially through 180" and this rim has a rising portion I23 at one end while its other able that the clutch teeth be completely moved end drops off sharply at the point indicated at I24. The cams are adapted to co-operate with a roller I26 on oneend of a leaf spring I21- which is connected to the projection 98 by screws or bolts I28. The roller I26 and spring arm shown in broken lines in Fig. 2 are above the plane of the paper andin the position shown, the roller is in contact with the-cam I2I. As thus arranged, the leaf spring is flexed substantially to the left so that it urges the clutch sleeve 48 to the left. However, the clutch sleeve 48 cannot move tothe left until .theroller I86 is at the end. of cam rim III or in other words when the roller is at the gap I I3 as seen in Fig. 10, and when it. is at such gap,. the taper vHS positively initiates movement of the clutch sleeve. As soon as movement is initiated, the built up spring force in leaf' spring I21 acts quickly to throw the clutchsleeve to the left so as to cause the teeth 31 and H to disengage and the teeth 38 and 42 to engage. Following this movement the roller I86 is at the side of cam surface H8 which prevents return movement of the clutch sleeve. As the cams continue turning, the cam I2I leaves the roller and then the rise I23 on cam I28 engages the roller. This causes the spring to, flex in the opposite direction and to Directing attention now to Fig- 1, a second cam shaft I38 is journalled at its ends in side walls of the casing as indicated at HI and I32,'and this cam shaft is driven by a gear train shown by Figs 2-.and 3. At its upper end the vertical shaft 81 has a worm I84 which'meshes with a worm I88 on a short horizontal shaft I38 disposed in an opening I31 in the side wall of the casing. The shaft I38 also has a pinion I38 next to the worm wheel I38 as shown by Fig. 3, and the pinion meshes with a pinion I40 mounted on a shaft I in the casing, and in turn the pinion I40 meshes with a pinion I43 on the cam shaft I30. Thus the cam shaft I80 is driven by the shaft 81 and the arrangement of pinions is such that the cam shaft rotates very slowly, as for example, turning through one revolution in forty-five minutes.

The shaft I30 as shown by Fig. 1 has a shell I45 similar to the shell 85 and this shell is mounted on the cam shaft for axial movement thereon. In this case the shell has a projection I48 extending downwardly, and an arm I41 secured by screws I48 to the projection has a forked shaped lower end shown by Fig. 6 slidably fitting in a groove I49 in the clutch sleeve 8i. Thus if the shell I48 shifts axially, the clutch sleeve 5| will shift likewise. The clutch sleeve shifting means generally is similar to the clutch shifting means on shaft 80 but differs in two particular respects in that shifting of the clutch sleeve 5i is not positively initiated although it could be if desired, and secondly, in that means are provided for bringing the clutch sleeve into neutral position at the end of the drying operation. The reason for not positively initiating movement of this clutch sleeve is that it does not seem to be necessary as .the friction forces holding the clutch sleeve in engagement are less and more easily overcome by the spring action provided.

The bar I41 projects into the shell I45 an cooperates with a holding means generally indicated at I80, and this holding means includes a sleeve I58 fastened to the shaft I30 as by set screws and a bushing I8I keyed to the sleeve and having a rim I82 at its center. As best seen in Fig. 16, the rim I82 has a gap I83 at one point and a second gap I84 which is wider than gap I63 and has its bottom extending tagentially to the periphery of the rim. The two gaps provide spaces for the end of the bar I41 to shift axially from one side of the rim I82 to the other at predetermined times.

The means for shifting the shell I45 and bar I41 comprises a pair of cam elements I88 and I6! secured to the cam shaft I30 and which are adapted to co-operate with a roller I68 mounted on the end of a leaf spring I89 secured to the projection I48 by screw means I84. The two cams I81 and I88 are shown in Figs. 14 and 15 and such cams have rims I and HI, respectively. These rims are provided with. rising surfaces at prearranged locations to cause th spring arm to flex in one direction or the other as the case may be. With the clutch ii in its right hand position, the spring roller I88 in riding over the rising cam surface on cam I81 flexes the leaf spring to the left and then when the gap I83 in the rim I62 on element I6I reaches the arm I41, the end of the latter is rapidly moved through the gap in an axial direction due to the spring action so as tocause the teeth 58 and 51, to engage. Continued turning of the bushing I8I in the clockwise direction as seen in Fig. 16, causes the gap I84 to become aligned with the arm I41 and in the meantime the spring roller I88 has been flexed to the right by the cam I88.

, This causes the arm to now shift through the gap I84.

It might be mentioned at this time that the clutch sleev 8| is shifted to the right from its high, drying speed position only at the end of the drying operation and at this particular time, it is desirable to have the clutch sleeve stop in a Fig. 16. Hence, when the end of the bar I41 first moves through the gap, it engages the lip I18 and the clutch sleeve stops. This leaves the parts in neutral position and as will be seen presently, th motor is stopped at this particular time and the entire drive unit ceases to operate.

Subsequently upon starting the motor by an auxiliary starting circuit, the cam shaft will rotate sufflciently to move the lip I18 away from the arm I41 and then the arm will complete its movement through the gap I64 until it is at the right side of the rim I82 and this automatically throws the clutch teeth 48 and 49 into engagement. Operation of the machine with the teeth and 49 engaged then continues until the gap I63 reaches the ,arm I41 and then th clutch sleeve is shifted to the left and the arm I41 'moves along the left side of rim I82 until the gap I84 is again reached. It might be noted in connection with Fig. 16 that the clutch sleeve will be held at the right for a much longer period 40 of time due to the major circumferential distance between the gaps I63 and I84 whereas the clutch will be held at its left hand position for drying the clothes for a relatively short period of time due to the short circumferential distance between the gaps.

In order to insure rotation of the washing machine cylinder in the same direction as it is to rotate during drying at the time shifting of the clutch sleeve is to occur, a synchronizing interlock is provided which is best shown by Figs. 4 and 5. This interlock comprises a bell crank I pivoted as indicated at I8I on a cross shaft I8I in the casing and which has a lower end I82 contacting a cam I83 on the lower cam shaft 80. The opposite end of the bell crank has a notched portion I88 which is adapted to engage a lip I88 on the clutch shifting arm I41. A spring I89 looped about the shaft I8I and engaging a fixed pin I90 at one end and a part of the bell crank at its other end, urges the crank into interlocking engagement with the lip I88 on the arm I41. The cam I 83 is so related to the reversing cam means on the shaft 80 that the arm I41 is held in its right hand position as seen in Fig. 1 or in other words, in a position where the teeth 48 and 48 are engaged, until th ring gear 44 is turning in the same direction as the high speed driving pinion 59 is turning. Thus if the arm I 41 reaches the gap I 83 and is about to be shifted by the leaf spring I89 but the ring gear 44 is turning oppositely to the high speed gear59, the notch I81 will be in engagement withth lip I88 onarm I41 and will prevent the shifting action. However, as soon as the lower cam shaft 80 has turned sunlcientlyto effect a reversal of rotation of ring gear 44, the cam is will have shifted the motor, a cam 200 is provided-on the upper cam shaft I30, and this cam has a cam surface 20l engageable with a cam roller 202 on a-vertically movable pin 203 extending upwardly through a cover 205 onthe casing. As best shown by Fig. 17, the vertically movable member 203 engages an arm 206 on top of the cover which is pivoted at 201 thereon, and this arm is provided for opening and closing a drain valve for the r tub. The same drain valve means otherwise may be employed as is embodied in my copending application for patent identified, and generally it might be mentioned that when the member 203 is raised, the drain is open and when it isin its lower position, the drain is closed. It will be noted that the drain cam l has a long cam surface 200v permitting the drain valve tobe closed for a long period and it is during this time that the clothes are washed. The drain cam also has four raised portions 2l0, 2H, 2l2 and H3 which respectively open the drain valve at the, end of the washing operation, then at the end of the first rinse, at the end of the second rinse, and then at the end of the third rinse. operations the valve, of course, is closed. It should be observed that at the end of the third rinse the drain is opened for a substantial period by the rise 2 l3 on the cam so that it will. be open during the drying operation.

The cam 200 also includes a cam portion 2| 5 which is provided with a single notch 2"; for allowing a switch actuating element 2| 1 to move inwardly into the notch. When this switch element 211 is moved outwardly. a switch indicated at 220 is closed and this closes the motor circuit.-

When the element 2l1 drops into the notch 2l6, however. the motor is stopped. As stated before,

- an auxiliary circuit is provided for starting the motor so as to cause the cam shaft lto turn sufliciently as to move the switch operating element 2l1 outwardly and thus close the primary motor circuit. From this it should be "under- .stood that the primary motor circuit is closed until the switch operating element 2" drops into the notch 2l6 and then in order, to start the cam shaft turnin again sufiiciently to move the switch operating element out of the notch 2l6, the auxiliary motor circuit is closed and remains closed until the primary circuit is closed.

. 10 ally in as much as particular reference is directed to it in my copending application for patent.

The valve 250 controls the inlet of water to the tub at a temperature of 140 while the valve 1" controls the inlet of water of water at 100.

Referring to/Fig. 21 and assuming that "the. cam 230 is moving downwardly with respect to.

the valve controlling'elements 235 and 236, it is apparent that the finger 231 will not be engaged by any of the recesses'and that the finger 230 ,will drop into all the recesses in circumferential order. This means that all the water sup- I plied to the tub will have a temperature of 100. However, if the cam 230 is shifted to the left a short distance, it will be seen that the finger 231 will be engaged by the recesses 233, 232, and NI but not by the recess 234, and that the finger 238 will be engaged by the recess 234 and not by the others. This means then that water will flow into the tub at 140 temperature at three stages whereas at the other stage as noted by the recess 234, water will fiow into the tub at 100.

Now relating the foregoing to Fig. 17, the .recess 23l is so positioned that initially when the motor is turned on to start the washing machine operation, one of the fingers will drop into the perature will again enter the tub when recess Between such It does not seem necessary to show such circuits v as they will be readily understood by those skilled in the art.

For causing water to enter the cylinder, another cam 230 is provided on the camshaft I30 and this cam, as best shown by Fig. 21 in de-' veloped form, has four recesses 23l, 232, 233 and 234 which are adapted to co-operate with spring 232 reaches the, valve controlling finger, and this water will be used in the first rinse. After the first rinseoccurs and the rinse water is drained, the next recess 233 will reach the finger and the second rinse water at the, same selected temperature will flow into the ,tub. When the third vrinse is to occur, however, the recess 234 will engage only the finger 233 and hence the thirdrinse water will always be at the lower temperature of 100. For normal washing operations, the finger 231 will control all washing operations excepting the last rinse. However, for washing woolens, the finger 236 will control all washing operations so as to deliver water at a.

lower temperature.

The cam 230 is shiftable from one position to the other, as best shown by Fig. 1, by'means of a turnable pin 240 projecting downwardly through the casing cover 35, and this pin has at its lower end an eccentric pin projection 241 arranged in an annular groove 242 in the cam. By turning the pin 240. the cam 230 thus can be shifted axially from one position to the other..-

The pin 240 is suitably connected to an operating element 243 which may extend to an external point on the washing machine cabinet.

Now referring to Fig. 22, the pulley l9 about which the belt I8 is trained comprises a hub 250 keyed to the external end of shaft20 and secured thereon .by a bolt 25! extending through a washer 252 in an enlarged portion 253 of the openin in finger elements 235 and 236. These finger elements have lip portions 231 and 238 engageable with the cam and other lip portions 240 and 2 which contact plungers 243 and 244, respectively. Such plungers are slidably mounted in a closure' or cap 245 held securely by bolts 246 to the cas-- ing wall and respectively operate water control ling valves 250 and 25l. It seems unnecessary to discuss this valvein detail here except generthe hub. The inner end of the hub 250 has an outwardly directed radical flange 255 and next to this flange a ring'256 is disposed on the hub. The pulley includes two positively driven disk elements 251 and 250 having a keyed engagement with the hub 250 and the disk 251 is disposed next to the ring 256. Between two disks 251 and 258, two other disks 260 and 261 are provided and these at their outer ,edges form an annular groove for the belt l8. At their inner edges, the disks are disposed on a short sleeve 263 slidably fitting the hub between the disks 251 and 258 and such sleeve has a central, annular "260 and 26! apart. Friction plates 268 and 289 are disposed between the disks 251 and 280 and between the disks 258 and 261, respectively, and the disks 2% and 26! have struck out tongues 210 and 21! for holding the friction plates concentric to the hub. Outer portions of the disks 251 and 258 have circumferentially spaced fingers 218 projecting into the openings in the friction plates so as to drivingly lock them together.

All of the disks are held on the hub by a Washer 216 engaging the outer side of the disk 258 and by a nut 211 threaded on the outer end of the hub. Only the outer margin of the washer 218 engages the disk as indicated at 280, and from this it follows that tightening of the nut 211 places a resilient pressure against the disk so as to in turn place a resilient pressure on the friction plates and the disks on opposite sides thereof. In this way the friction between the plates and disks may be adjusted.

It is evident when the disks 260 and 2B! are rotated by'the belt, that the disks 251 and 258 normally will rotate therewith and hence, the

shaft 20 will rotate. It will be recalled that the shaft is is connected to the clothes cylinder driving shaft 61 by a rubber sleeve so that any shocks such as occur when the shaft 53 isreversed in direction will be cushioned. At the same time, however, the pulley l9 provides a slippage connection which allows the shaft 53 to slow up or change its speed temporarily relative to the driv in that the cylinder is first turned in one .direction and then in the other during the washing and rinsing stages, and then is turned at high speed during the drying stage. Water is introduced into the cylinder-at the beginning of the washing operation and at this time the drain is closed and then at the end of the washing operation the drain valve opens and remains open to allow the water to drain from the tub. Following this action the'drain valve closes and fresh water enters the tub for a period of time so as to effect a first rinsing of the clothes. After a short rinsing period, the rinse water is drained and then. the rinsing operation is repeated 9. second and third time, and after the third rinse, the drain valve remains open' and the cylinder is rotated .at high speed in a single direction. This high speed rotation always. is initiated when the cylinder is turning in its slow speed stage in the same direction as it turns or rotates at high speed, and in the present embodiment after the final rinsing stage. Consequently the high speed dry picks up the cylinder when it is already roing of the washing operation is eil'ected by an auxiliary motor circuit which may be of conventional character and then after a short period of time, the switch operating cam in the mecha- 5 nism closes the motor switch 220 and thereafter the switch maintains control of the motor until it is again stopped at the end of the drying stage.

Although only one form of the invention has been illustrated and described in detail, it will be apparent to those skilled in the art that various'modifications may be made without departing from the scope of the claims.

What is claimed is:

1. In a clothes washing machine having a rotary clothes receiving cylinder, a power operated drive means for turning the cylinder, slow speed mechanism for transmitting from the drive means to the cylinder rotational motion at slow speed repeatedly first in one direction and then in another direction through a predetermined slow speed stage, high speed mechanism for transmitting from the drive means to the cylinder rotational motion at a relatively high speed in one direction only after the slow speed stage, and means timed to maintain said high speed mechanism out of operation until after the slow speed stage and at a time when the cylinder is rotating at slow speed in the same direction as it rotates at high speed.

2. In a clothes washing machine having a rotary clothes receiving cylinder, a power operated drive means for rotating the cylinder, slow speed means for transmitting from the drive means to the cylinder rotational motion at slow speed re- 85 peatedly first in one direction and then in another direction through a predetermined slow speed stage, high speed means for transmitting from the drive means to the cylinder rotational motion at a relatively high speed in one direc- 40 tion, and control means timed to bring said high speed means into operation only after the slow speed stage and at a time when the cylinder is rotating at slow speed in the same direction as it rotates at high speed.

3. In a clothes washing machine having a rotary clothes receiving cylinder, power operated drive means for turning the cylinder including *slow speed gear means and high speed gear means, said high speed gear means being operative to rotate the cylinder at relatively high speed, control means for reversing the direction of rotation of said slow speed gear means to cause the cylinder repeatedly to turn slowly first in one direction and then in the other through one stage, means for shifting the drive from said slowspeed gear means to said high speed gear means,.and means for correlating the action of said control means and shifting means so that said shift will occur only after the slow speed stage at a time when the slow speed gear means is rotating in the same direction as the high speed gear means. i

4. In a clothes washing machine having a rotary clothes receiving cylinder,power operated drive means for turning the cylinder including slow speed gear means and high speed gear means, said high speed gear means being operative to rotate the cylinder at relatively high speed, control means for reversing the direction of rotation of said slow speed gear means to cause the cylinder repeatedly to turn slowly first in one direction and then in the other-through one stage, means for shifting the drive from said slow speed gear means to said high speed gear 13 means, and means operable in timed relation to said control means for causing said shift to occur only after the slow speed stage and at a time when the slow speed gear means is rotating in the same direction as the high speed gear means.

5. In a clothes washing machine having a rotary clothes receiving cylinder, power operated drive means for turning the cylinder including slow speed gear means for rotating the cylinder relatively slowly and high speed gear means for rotating the cylinder at relatively high speed in one direction, control means for reversing the direction of rotation of said slow speed gear means at timed intervals to cause the cylinder repeatedly to turn first in one direction and then in the other through a predetermined slow speed stage, and control means operative to cause the drive to be transmitted by said drive means through said high speed gear means and operable in timed relation to said first named control means so as to cause said cylinder to commence rotation at relatively high speed in one direction only after said slow speed stage and when the high speed gear means is rotating in thesame direction as the slow speed gear means.

6. In a clothes washing machine having a rotary clothes receiving cylinder, a power operated drive means for turning the cylinder, slow speed mechanism for transmitting from the drive means to the cylinder rotational motion at a relatively slow speed, control means for causing the drive means through said mechanism to turn the cylinder repeatedly first in one direction and then in the other direction through a predetermined slow speed stage, high speed mechanism for transmitting from the drive means to the cylinder rotational motion at a relatively high speed in one direction, and means for correlating the action of said control means and high speed mechanism so as to bring the latter into operation only when the cylinder is rotating after its slow speed stage in the same direction as it rotates at said high speed.

'7. In a clothes washing machine having a, rotary clothes receiving cylinder, a power operated drive means for turning the cylinder, slow speed der in its slow speed stage is turning in the same direction ,as it turns in the high speed stage.

9. In a clothes washing machine having a rotary clothes receiving cylinder, a power operated drive means for turning the cylinder, slow speed control means co-operating with the drive means for causing the cylinder repeatedly to turn first in one direction and then in the other through one stage, high speed control means co-operating with the drive means for causing the cylinder to rotate at a relatively high speed in one direction only after the slow speed stage, and means for modifying the operation 01' the high speed control means so as to delay the high speed operation until the cylinder is in a predetermined phase ofits slow speed stage.

10. In a clothes washing machine having a rotary clothes receiving cylinder, a power operated drivemeans for turning the cylinder, slow speed control means co-operating with the drive means for causing the cylinder repeatedly to turn first in one direction and then in the, other, high speed control means co-operating with the drive means for causing the cylinder to rotate at a relatively high speed in one direction only after the slow speed stage, and means for preventing the operation of thehigh speed control means when the receptacle in its slow speed stage is turning in a direction opposite that in which it will turn in its high speed operation.

11. In a clothes washing machine having a rotary clothes receiving cylinder, motor operated drive means for turning the cylinder, clutch means for controlling the rotation of the cylinder so that during one stage of operations the cylinder-will rotate slowly first in one direction and then in the other in a repeating manner, clutch means for controlling the rotation of the cylinder during another stage of operations so that the cylinder will rotate at a relatively high speed in one direction only, and means for moving the clutch means to shift from the slow speed stage mechanism for transmitting from the drive means to the cylinder rotational motion at a relatively slow speed, control means for causing the drive means'through said mechanism to turn the cylinder'repeatedly first in one direction and then in the other direction through a predetermined slow speed stage, high speed mechanism for transmitting from the drive means to the cylinder rotational motionat a relatively high speed in one direction, means for shifting the drive from said slow speed mechanism to said high speed mechanism, and cam means for restraining operation of said shifting means to effect such shift until completion of said slow speed stage and only at a time when the cylinder is rotating in its slow speed stage in the same direction as it rotates at said high speed.

8. In a clothes washing machine having a. rotary clothes receiving cylinder, a power operated drive means for turning the cylinder, slow speed control means co-operating with the drive means for causing the cylinder repeatedly to turn first in one direction and then in the other through one stage, high speed control means co-operating with the drive means for causing the cylinder to rotate at a relatively high speed in one direction only after the slow speed stage, and means for preventing the operation of the high speed control means, except at a time when the cylinto the high speed stage of operations only when the cylinder is turning in thee same direction it will turn during the high speed stage.

12. In a clothes washing machine having a rotary clothes receiving cylinder, motor operated drive means for turning the cylinder, clutch means for controlling the rotation of the cylinder so that during one stage of operations the cylinder will rotate slowly first in one direction and then in the other in a repeating manner, clutch means for controlling the rotation of the cylinder during another stage of operations so that the cylinder will rotate at -a relatively high speed in one direction only, means for moving the clutch means so as to change from the slow speed stage to the high speed stage of operations, and cam means for preventing the change to high speed operation when the cylinder is turning in a direction opposite that in which it is to turn in th high speed stage. 13. In a clothes washing machine having'a rotary-clothes receiving cylinder, a drive .unit for rotating the cylinder, means including a double acting clutch in the unit and ,movable back and forth between two positions for modifying rotary movement of the cylinder, means positively preventing movement of the clutch from either position .to' the other except at predetermined times and then acting to release the clutch for movement, cam means for positively initiating movement of the clutch at said predetermined times, and spring means independent of the movement 14. In a clothes washing machine having a rotary clothesreceiving cylinder, a drive unit for rotating the cylinder, means including a clutch in the drive unit movable between two positions for modifying rotary movement of the cylinder, means for positively holding the clutch in a clutch engaged position during a predetermined time and then operating to place the clutch in a fully releasable condition, cam means acting to gradually disengage the clutch immediately prior to the clutch being placedin a fully releasable condition, and spring means independent of the movement preventing means for continuing the disengagement oi the clutch after operation of the cam means.

15. In a clothes washing machine having a rotary clothes receiving cylinder, a drive unit for rotating the cylinder, a double clutch in the drive unit and including a clutch member movable between two engaged positions where with the member in one position the cylinder moves slowly and where in the other position the cylinder rotatesrapidly, means positively preventing disengagement or the member from either engagement except ata predetermined time and then acting to permit movement of the clutch member to its other position, spring means acting to move the clutch member from one position to the other when such movement is permitted, and means associated with and adapted to engage and temporarily hold the clutch member in an intermediate, neutral position when it is moved from the position. where rapid rotation of the cylinder has occurred.

16. In a clothes washing machine having a rotary clothes receiving cylinder, motor operated drive means for turning the cylinder, clutch means in said drive means and movable between two positions for effecting reversing rotation of the cylinder in a repeating manner, a second clutch means in said drive means and movable between two positions wherein in one position the cylinder is driven in the mentioned reversing manner and in the other position it is driven at a relatively high speed in one direction only, cam means for effecting periodic reversing of the first clutch means. cam means for controlling movement of the second clutch means so that the cylinder can be driven first in a reversing manner and then in the one direction at higher speed, cam means for correlating the action of the two clutch means so that the second clutch means is shifted into its high speed position only when the first clutch means is in a position where the cylinder is turning in the same direction as it is to turn in the high speed stage, and means {or driving all cam means in properly timed rela- 17, In a clothes washing machine having a rotary clothes receiving cylinder, motor operated drive means for turning the cylinder, clutch means in said drive means and movable between two positions for effecting reversing rotation of the cylinder in a repeating manner, a second clutch means in said drive means and movable between two positions wherein in one position the cylinder is driven in the mentioned reversing manner and in the other position it is driven at a relatively high speed in one direction only, cam means for effecting periodic reversing of the first clutch means, cam means for controlling movement of the second clutch means so that the cylinder can be driven first in areversing manner and then in the one direction at higher speed, cam means for modifying the action of one of the first two cam means so that the second clutch means is shifted into its high speed position'only when the first clutch means is in a position where the cylinder is turning in the same direction as it is to turn in' the high speed stage, and means for driving all cam means in properly timed relation.

18. In a clothes washing machine having a retary clothes receiving cylinder, motor operated drive means for turning the cylinder, clutch means in said drive means and movable between two positions for effecting reversing rotation of the cylinder in a repeating manner, a second clutch means in said drive means and movable between two positions wherein in one position the cylinder is driven in the mentioned reversing manner and in the other position it is driven at a relatively high speed in one direction only, driven control means for effecting periodic reversing of thelfirst clutch means, control means for governing movement of the second clutch means so that the cylinder can be driven first in a reversing manner and then in the one direction at higher speed, driven control means for correlating the action of the two clutch means so that the second clutch is shifted into its high speed position only when the first clutch means is in a position where the cylinder is turning in the same direction as it is to turn in the high speed stage, and means for driving all control means in properly timed relation;

19. In a clothes washing machine having a rotary clothes receiving cylinder, motor operated drive means for turning the cylinder, clutch means for controlling the rotation of the cylinder so that during one stage of operations the cylinder will rotate reversely first in one direc- 40 tion, and then the other in a repeating mannner,

means including a clutchmovable between two positions for controlling the rotation of the cylinder so that with the clutch in one position the cylinder is driven in the reversing manner and when in the other position it is driven at a relatively high speed in one direction, a control element for shifting the second mentioned clutch means from one position to the other, control means for shifting the element automatically between said two positions during'operation of the machine, and means for preventing movement of the element when the second mentioned clutch is to be shifted to its relatively high speed position until the cylinder is turning in the same direction in its reversing stage as it is to turn in its high speed stage.

20. In a clothes washing machine having a rotary clothes receiving cylinder, motor operated drive means for turning the cylinder, clutch means for controlling the rotation of the cylinder so that during one stage of operations the cylinder will rotate reversely first in one direction and then the other in a repeating manner, means including a clutch movablebetween two positions for controlling the rotation of the cylinder so that with the clutch in one position the cylinder is driven in the reversing manner and when in the other position it is driven at a relatively high speed in one direction, a control element for shifting the second mentioned clutch means from one position to the other, control means for shifting the element automatically between said two positions during operation of the machine, means including a driven cam adapted to prevent movement of the element when the second mentioned clutch is to He shifted to its relatively high speed position until the cylinder is turning in the same direction in i,

reversing stage as it is to turn in its high speed stage.

HYMAN D. BROTMAN.

REFERENCES CITED The following references are of record in the flle of this patent:

UNITED STATES PATENTS Number Name Date Eden Sept. 3, 1912 Number

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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2548940 *May 29, 1947Apr 17, 1951Horton Mfg CompanyDrive unit for automatic washing machines
US2598918 *Jul 24, 1948Jun 3, 1952Horton Mfg CompanyAutomatic washing machine
US7107798 *Aug 27, 2002Sep 19, 2006Whirlpool CorporationDrive mechanism for an automatic washer
US20130205512 *Feb 13, 2012Aug 15, 2013General Electric CompanyStatus sensor for a clutch on a washing machine appliance
Classifications
U.S. Classification74/1.00R, 74/318, 74/324, 74/70, 68/12.14, 74/323, 68/12.24
International ClassificationF16H3/00, D06F37/36, D06F33/04
Cooperative ClassificationD06F33/04, F16H3/00, F16H2712/00, D06F37/36
European ClassificationF16H3/00, D06F37/36, D06F33/04