US2142902A

US2142902A - Washing apparatus

Info

Publication number: US2142902A
Application number: US161251A
Authority: US
Inventors: Leslie A Kempton
Original assignee: EDISON GENERAL ELEC APPLIANCE
Current assignee: EDISON GENERAL ELEC APPLIANCE; EDISON GENERAL ELECTRIC APPLIANCE COMPANY Inc
Priority date: 1937-08-27
Filing date: 1937-08-27
Publication date: 1939-01-03
Anticipated expiration: 1956-01-03

Description

Jam'. 3, 1939.; 'I

' lWASHING APPARATUS Filed Aug. 27, 1937 L. AJKEMTCN 2,142,9(52

3 Sheets-Sheet l fgl.

- JAA. 3,' 1939.

L. A. KEMPTON WASHING APPARATUS Fild Aug. '27, 1957 3 Sheets-Sheet 2 InverltO-Tf 1 1./ ALeslie A. Kempton,

ttor-neg.-

Patented Juil 3, 1939 UNlTl-:D *STATES 2.142.902 WASHING APPARATUS Leslie A. Kempton. chicago, nl., signor u Edi-- son General Electric Appliance Company, Inc., 4 Chicago, Ill., a corporation of New York Application August zu, i937, serial No. 161,251

11 Claims.

This invention relates to washing apparatus, more particularly to dishwashing apparatus, and it has for its object the provision of an improved device of this character.

This invention has particular application to dishwashing apparatus wherein a cleansing liquid, such as hot water, is circulated in the washing vat through dish-supporting racks by means of suitable power-driven means, such as a motordriven impeller. In one of its aspects, this invention contemplates the provision of improved means for controlling washing apparatus of the above character including means for automatically supplying the washing vat with a predetermined quantity of cleansing liquid.

More specifically, this invention contemplates improvements in the washing machinecontrol described and claimed in the copendlng application of Forrest A. Walker and Gustave F. Malsch, Serial No. 86,396, filed June 20, 1936, and assigned to the same assignee as this invention.

For a more complete understanding of this invention, reference should be hadv to the accompanying drawings in which Fig. 1 is a vertical front elevation of ldishwashing apparatus vembodying this invention, parts being broken away and parts shown in section lso as to illustrate certain details of construction; Fig. 2 is an enlarged fragmentary View in elevation illustrating control apparatus for the washing device of Fig. 1 arranged in accordance with this invention; Figs. 3, 4 and 5 are fragmentary views in elevation illustrating a portion of the control apparatus of Fig. 2 in its diierent operative conditions; Figs. 6, 'l and 8 are fragmentary views in elevation illustrating parts of the control apparatus'of Fig. 2

in different operative conditions; Figs. 9 and 10"'y are vertical sectional views taken` throughthe lilies 9-9 and IIJ-I0 respectively of Fig. 2 and looking inthe direction of the arrows; and Fig. 11 is a diagrammaticview illustrating the impeller driving motor and certain control apparatus associated therewith arranged in accordance with this invention.

Referring to the drawings,- this invention has been shown in one form as applied to household dishwashing apparatus of the front-openingltype. Referring more specifically to Fig. 1, this washing apparatus comprises a casing or cabinet I enclosing a suit-able vat Il. The casing I0 is provided with a front opening I2 whereby access may be had to the vat. closed by a cover I3. Arranged within the vat is a suitable dish-supporting rack I4, which is slidably-mounted on suitable rails I provided on op This opening is normallyl posite sides of the vat so that when the front door I3 is open, the rack may be moved forwardly for loading and unloading. Arranged in the bottom of the vat below vthe rack is a suitable water circulating impeller I6. The impeller I6 is driven by 5 an electric motor I1 supported below the bottom wall of the vat and connected to the impeller by means of a shaft I3 extending upwardly into the vat where it is connected with the impeller. 'I'he bottom wall of the vat, as shown, is inclinedl downwardly toward the center where a drain opening I9 is provided. This opening is controlled by means of a drain valve 20. The drain valve is opened by means of an operating lever 2i. When the lever is in its 15 position shown in Fig. 1, the drain valve 26 is open. The lever is held in this position by means of a cable 22 which is tensioned by a spring 23. The flexible cable 22 is guided upwardly through .the vat to an operating knob 24.` The operating 20 knob 24, as shown in Fig. l, is accessible on the exterior of the front wall of the cabinet. The operating knob operates a shaft 25 which is mounted in a U-shaped supporting bracket v26. Rigidly secured on the inner end of the shaft 25 is an 26 i operating lever 2l. The upper end of the cable 22 is secured to one end of the lever 21, as shown, by. winding it about a pin 28 secured to the lever and then attaching the extreme end of the cable to a stud 29. v The lever 21, as showndsan-swingao/w between two positions /(F1gs.l2 and '7 and 8) dened bythe end walls of the bracket 26. In the position of the lever in Fig. 2, the drain valve is opened, whereas when the knob 24 is rotated in a clockwise direction to move the lever toits position of Figs. '7 and 8, the cable ls released to permit the drain valve to close. The bracket 26 is rigidly secured to a metallic control panel 29a which in turn is rigidly secured to the upper front portion of the cabinet I0. The cable 22 is encased in a housing 29h which is secured bysupporting clips 29o.

Cleansing liquid is supplied to thevat from a suitable Aconduit 36 which is connected with any suitable source of cleansing liquid supply, such as a hotwater tank (not shown). This conduit `is connected with a conduit 3l which is connected with the vat through a pair of valves 32 and 32a. The water enters the vat through a spray device 33h. The valve 32 is a manually operablevalve and is normally in its open position, the control of the water to the vat in the normal operation of the apparatus being solely by the valve 32. The valve 32a is ofthe self-closing type. Thatis, when the valve has been opened and is then released, it will automatically move to its closed position. The valve is moved to this position by means of a spring (not shown) which is incorporated in the valve structure.

The supply valve 32a is moved to its open position against the force of its spring by means of a manually operable control knob 33 also accessible at the front upper portion of the cabinet I0, as clearly shown in Fig. l. The knob 33is keyed to an operating shaft 34 which is mounted on a metallic panel 35. 'I'he panel 35 is rigidly secured to the panel 29a in any suitable manner as by screw-fastening means 35. As shown more clearly in Fig. 10, the rear end of the shaft 34 is journaled in the panel 35, whereas its forward end is supported in a U-shaped bracket 31 secured to the panel by means of screw fastening means 31a.

Mounted on the rear side of the panel 35 and rigidly secured to the inner end of the yshaft 34 is a plate orlever 38. This lever is used to operate the supply valve 32a to its open position when the knob 33 is moved in a clockwise direction. For this purpose, the lever 38 is mechanically con# nected to the supply valve as follows: Connected with the operating lever of the supply valve 32a is a rod 33 vertically arranged in the cabinet and extending from the valve 32a upwardly to the control panel where it is connected at its upper end with an arm 40 mounted to rotate on the panel 29a by means of a pin or stud 4I. Rigidly secured to the arm 40 is a second arm 42 arranged substantially at right angles to the arm 4I, as clearly shown in Figs. 2, 6 and 7, the two arms, in effect, constituting a right-angle bell crank pivoted at the angle. 'Ihe free end of the arm 42 is connected to a slide bar 43. This bar, as shown, is provided with an elongated slot 44 which receives a pin 45 mounted on the panel 29a. A pin 45 is provided on the lever or plate 38 and the parts are so related that when the lever is moved in a clockwise direction, the pin engages the adjacent end of the slide to move the slide to the left from its position of Fig. 6 to its position of Fig. 7. This operation elevates the rod 39'and opens the supply valve 32a. When the plate 38 is moved in a' counter-clockwise direction from its position of Fig. '1 to its position of Fig.\6, the inlet valve is permitted to close by means of its spring The control knolls also used to control the energization of the impellebdrivinglmitor I1,

' trically insulating block 55.

areaaoa The latching lever @l is movable on its pin 43 in a counter-clockwise direction, as viewed in Figs. 2, 3, 4, 5 and 8, to release the inlet valve by means of an electromagnet 5|. The armature 5Ia of the magnet carries a pin 5Ib which is extended through an aperture v5 I c in the lever so that when the excitation or energization of the electromagnet has been increased to a predetermined value, the armature will move the lever to release the' supply valvey 32a.

The electromagnet is connected in the armature circuit of the impeller driving motor I1 when the inlet valve 32a. is opened so that, if under these conditions the drain valve is closed, the waf ter supplied to the vat I I will accumulate therein;

and as the quantity of water in the vat increases, the armature current and excitation of the magnet will increase due to the increasing load imposed on the impeller I6. Eventually upon the occurrence of apredetermined armature current due to a predetermined supply of waterin the vat, the electromagnet 5I will operateto release the supply valve to shut oir the water.

'I'he energization of the electromagnet 5I is also controlled by means of the control member 33. To control both the motor I1 and the electromagnet, the control member 33 operates a suitable switch 52 comprising a pair of fixed spaced

contacts

53 and 54 mounted on an'electrically insulating block 55 that is 'riveted or otherwise rigidly secured to the panel 35. As shown more clearly in Fig. 10, the contact 53 is positioned back of the contact 54. Cooperating with these xed contacts respectively and positioned in the space between them are a pair of

movable switch arms

55 and 51, the arm 56 being positioned back of the arm 51, as shown in Fig. 10. The

switch arms

56 and 51 are formed of a suitable electrically conducting flexible spring material, and at their lower ends they are rigidly secured to a conducting plate 58 that is also'rlgidly secured to the elecis normally biased to its closed position by its inherent. resiliency, while the outer switch arm 51 is normally biased to its open position.I

The switch arms are controlled by means of a cam 59 rigidly secured to the shaft 34. The cam is formed of a suitable electrically insulating material, such' as a phenol condensation product. Also mounted on this shaft is a second controlling and in addition functions. tC* c01117101 Slitblexcatiat*functions both as a control cam and means for automatically eilecting the closureof the supply valve 32a when a predetermined quantity of water has been supplied to the vat. f

For the purpose of vautomatically effecting t e closure of the liquid supply valve 32a, the supp valve in the rst instance. when moved to its open position is latched in this position by means. of a latching lever 41 pivotally mounted intermediateits ends on the panel 35 by means of a. pin 48. The latching member 41 carries on its right-hand portion, as viewed in Figs. 2, 3, 4, 5 and 8, a latching member or tooth 41a arranged substantially at right angles to the lever and extending through an aperture 43 provided for it in the panel 35.

The upper end of the lever 33 is provided with a detent or tooth "fand the member 41a and the tooth 53 are so related that when the knob 33 has been moved in a clockwise direction a suilcient distance to open the supply valve, the member 41a will engage the tooth to lock the lever in its position shown in Fig. 7, thereby holding the supplyr valve open against the bias o`f its closing spring. The' latch is biased to its 4latching posi` tionbymeansofaspringlla.'

also as a positioning cam for the shaft 34. The cam 60, as shown, is provided with a pair of spaced positioning depressions 5I and 52, and with a cam surface 63 the purpose for which will be described in greater detail hereinafter. Cooperating with the positioning depressions is a latch member 64 carrying a detent 54a arranged to be received in them, and also arranged to engage the cam surface 63, as will be described in greater detail hereinafter. The member. is pivotally mounted on a pin 55 secured to the panel mem- .ber 35, and'is biased in a clockwise direction, as

viewed in Figs. 2. 3, 4 and 5, by means of a spring '66. The depressions are so positioned that the knob is held in its off position .designated a in Fig. 11, and also in a flrst controlling position 45 removed from a and designated b.

The electrical connections between the switch 52 and the motor I1 and the electromagnet 5I are shown diagrammatically in Fig. 11. As there shown, the motor I1 and magnet are energized from any suitable source of electrical supply 61. Asalso shown, the electromagnet is connected across the

contacts

53 and 54. The lower side of The inner arm 56 motor, the other side,of which is connected to v the two switch'

arms

56 and 51. This latter connection is effected through the plate 58.

In the operation of thewashing apparatus thus far described, it will be understood that when the knob 33 is in'its oif position a the control parts will be as shown in Figs. 2 and 6; the supply valve 32a will` beclosed, and the motor and electromagnet will be deenergized. If it be desiredto wash dishes placed within the,rack Il, the drain valve knob 2l will be moved to close the drain valve. 'Ifhen the control knob 33 will be moved from its olf position a to its first controlling position b away from 'a. In this position,'the parts are as shown in Fig. 3. As there shown, the cam 59 is so positioned that it permits the switch arm 56 to remain closed while it positivelycloses the switch arm 51.I This energizes the electric motor' I1 and shorts the electromagnetwhich therefore is deenergized.A The motor I1, therefore, will drive the impeller I6. The parts are locked in this position bythe detent 64a seating in depression 62. The control member 33 will then be moved to its second controlling position approximately 40 from b 'and indicated c in Fig. 11. In this position of the control member, the parts are as shown in Figs.' 5 4and '7. In this position, the inner contact 53 remains closed, but the outer arm 51 will have been permitted to move to its open position. In this condition of\ the parts, the electromagnet is connected directly in the amature circuit of the motor I1. Also the movement of the knob 33 to the position c will have moved the slide bar 43 suiliciently to open 'the inlet valve 32a where it is locked by the latching member 41a. Under these conditions, `-the motor will be operating and water will flow into the vat from the supply source. As the motor loadbuilds up, its armature current also builds and also so does the excitation of the electromagnet 5I. Upon the occurrence of a predetermined armature current and, therefore, a predetermined excitation inthe magnet 5I the magnet will function to release the inlet valve 32a, in the manner previously described.

This automatically measures a predetermined quantity of water forthe vat.

It will be observed that when the control member 33 is in position c, the detent 64a engages the cam surface 63 on the cam 60 (Fig. 5), and that when vthe latch 41a releases the inlet valve 32a, l it releases the shaft 34\and the knob 33 at the same time, whereupon these members are moved back'to the first controlling position b by-the detent 64a acting on the surface. This operation of the shaft 34 disconnects the electromagnet 5I by reclosing the switch arm 51.

The apparatus thereafter will function to wash the dishes by the motor operating the impeller to' position c wherein the water valve 32a is opened and the motor I1 is energized, there is the dan-- ger that thev large inrush of starting current in the motor would energize the electromagnet J5I sufciently to retract its armature, which operation would,. of course, hold the latch in its released position thereby preventing proper functioning of the washing apparatus. To obviate this possibility, I have provided still a third controlling position d for the control, member 33 (Fig. 1l). The parts of the control apparatus in this position are shown in Fig. 4. In` this position, the cam 59 is so placed that the

switch arms

56 and 51 are in the same positions that they have in the rst controlling position b, and the electromagnet 5I is short-circuited, while the motor is connected directly to the supply source. If, therefore, the control knob-33 is moved directly to the position d, the motor I1 will be energized and will start up, as before, and the fact that it has a large starting current, or that the liquid supply valve 32a is open will `have no effect upon the electromagnet 5I, because it will be shor'ted out. .The knob 33 is manually held in position d against the force of detent 64a acting on cam surface 63, and when released it will be automatically returned to its second con- 4' .I trolling position c by the detent 64, and it will be held in this position by the latch 41a engag-I ing the tooth 50 in lever 38. The starting inrush of current subsides by the time thev operator moves th'e knob 33 to the position d and then releases it tovpermit it 'to move to position c.

Position d is positively determined by means ofa stop 68 on the panel 35 positioned in the path of downward movement of the arm 64 as shown in Fig. 4.

Normally the operator grasping the knob 33 in the off position a will move it directly to the position d and then releases it. If, however, the

invention. As there described, a releasing dog'v a 69 is mounted on the inner end of the control shaft 34. The releasing dog 69 is rigidly secured to the shaft, whereas the plate 38 is keyed. to

the shaftso that it can be rotated freely relatively to the shaft through a few degrees of movement; it will be observed that the key slot 38a provided in the plate 38 is relatively elongated to provide for -this limited freedom of move-- ment. move apart on theirKaxis of rotation vby means of a `tension spring 10 joining the two members, as shown. It will be noted that when the knob 33 is moved in a clockwise direction to open the supply valve 32a, as previously described, the plate 438 and the dog 89 will move together as a unit, as shown in Fig. 6,--the dog leading the upper' end of the plate 38 until the latch 41a engages the tooth 50 in the plate 38 to lock it, as

shown in Fig.'7. Now if the knob 33 be reversed to move in a counter-clockwise direction, it will move the dog 69 in the same direction independ- The plate 38,'and dog 69 are biased toI 'zog ently of the member V381:0 engage and release the latch 61a-I whereupon the dog and plate 38 will return to their initial positions shown in Fig. 6.

If it be desired to rinse the dishes, the' drain valve is'left open, and the control member 33 is moved to position c. This permits water to ow into the vat through the spray 33h continuously untilthe inlet valve is released by reversing the movement of knob 33, as previously described.

While I have shown a particular embodiment ci my invention, it will be understood, of course, that I do not wish to be limited thereto since many modcations may he made, and I, therefore, contemplate by the appended claims to cover any such modications as fall within the true spirit and scope of my invention.-

What I claim as new and desire to secure by Letters Patent of the United States is:--

l. Washing apparatus comprising a vat, means for circulating liquid in the vat, an electric motor for operating said circulating means, a liquid supply valve controlling the flow of liquid to said vat, means operated responsively to an electrical condition in the armature circuit of said motor that variesas the load on said motor varies forcontrolling the voperation of said valve to shut oi the supply of liquid when said load attains a predetermined magnitude, a control member for said` last-named means and said motor movable from an oi position to one position to eiect the operation of said motor and to render said means responsive to said electrical condition, and to-a second position in which said motor only operates, and means biasing said control member from said second to said iirst position so that when the operator releases said control member in the second position, it automatically moves to the rst position, the movement ofthe control member from the off to the second position and subsequently when -released to the rst position permitting the starting current of the motor to rise and ysubsequently subside before, said responsive means is rendered effective to said electrical condition.

2. A dishwashing machine comprising a vat, means ln said vat for engaging liquid therein so as to circulate it in the vat, a motor for operating said liquid circulating means, a source of liquid supply for said vat, electroresponsive means controlling said source of liquid supply arranged to be connected to the armature circuit of said motor to respond to the armature current thereof so as to shut oi the ow of liquid to said vat when the armature current attains a'predetervmined magnitude, a switch controlling said elecl troresponsive means and said motor movable from an oil position to a rst controlling position wherein said motor is energized, to a second position'in which said motoris energized and said.

electrore'sponsive means is connected in the armature circuit of said motor, and to a third position in which the motor only is energized, and means biasing said switch from said third to said second position. yso that when the switch is released in the third position it moves automatically to the second position, the movement ofthe switch from the oi to the third position and subsequently when released to the second position permitting the starting current of said motor to -rise and subsequently subside before -said electroresponsive means is connected in said armature circuit.

3. Washing apparatus comprising a vat, an

. impeller for circulating liquid in said vat, a motor fordriving said impeller, a liquid supply valve for said vat biased to its closed position, a control member for moving said valve to its open position, a latch for locking said valve in said open position, an electromagnetic device arranged to release said latch to permit ,said valve to close,

means loperated by said control member when4 moved to its position to open said valve to energize said motor to drive said impeller, and to connect said electromagnet in the armature circuit .of said motor so that when the armature current builds up to a predetermined magnitude the electromagnetic device fis energized to release said mature current of said motor to rise and subsequently subside before said electromagnetic dei' vice is connected in said armature circuit.

4. Washing apparatus comprising a vat, a liquid supply valve for said vat biased to its closed position, a liquid circulating device'in the vat, a motor for driving said circulating device, a control member'for the liquid supply valve to move it to its open position, a latch for holding said supply valve in its open position, an electromagnet arranged to operate said latch to release said valve when energized "to a predetermined degree, a switch controlled by said control member comprising a pair of xed contacts and a pair of movable contacts cooperating therewith arranged when the control me the o to a controlling position to close both of said contacts, when movedtoa second controlling position to open one of said contacts, and to still a third controlling position to reclose said open contact, means biasing the control member to move from the third to the u second controlling position, and electrical connections between said xed and movable contacts and said motor and electromagnetic device arranged so that when said switch is in said rst and third controlling positions said electromagnet is cut out of the armature circuit of said motor, and in said second position it is connected in the armatune circuit of said motor so that when the' amature current builds up to a predetermined magnitude the electromagnet is energized to operate the latch to release the valve, and means operated by said control member when moved from the irst to the second controlling positions to open said supply valve, the starting current of the motor building up and subslding While the control members is ber is moved from successively moved comparatively slowly to the iirst andsecond controlling positions before the electromagnet is connected in said armature circuit, and also, the starting current building up and subsiding before the electromagnet is connected in the armature circuit while the control member is moved directly to said third position and subsequently to the second position when released, i

5. Washing apparatus` comprising a vat,A a liquid supply valve for said'vat biased toits closed position, a device for circulating liquid in said vat, a motor for driving said circulating device, means for holding said supply valve in its open position, an electromagnet arranged when energized to a predetermined degree to eilect the release of said holding means to permit said supply valve to close, a control member for said supply valve and motor. switching means controlling said motor and said electromagnetic device comprising movable contacts, and can means operated by said control member arranged to operate said contacts so that when said control member is moved from an o ff to a first controlling position said motor is energized and said electromagnet is deenergized, when moved in the same direction from said rst to a second controlling position said motor is energized and said electromagnet is con'- nected in its armature circuit so that the excitation of said electromagnet varies with the armature current of said motor, means operated by said control member when moved from the first to the second controlling position to open said supply valve, the starting current of the motor building up and subsiding before the electromagnetic device is connected in the armature circuit of said motor when the control member is moved comparatively slowly from the oil to the second controlling position, a cam operated by said control member having a pair of depressions corresponding to said off and said rst controlling positions and a detent biased to move into said depressions to hold said control member in said positions respectively, said cam also having a surface engaging said detent yieldingly to resist continued movement of said control member in said direction from the second controlling position to a third controlling position wherein said motor only is energized but permitting it to be moved to said third position, a stop engaging said detent to limit movement thereof by said cam and thereby define the third controlling position, said starting current also building up and subsiding before the electromagnetic device is connected in said armature circuit while the control member is moved from the oi position directly to the third controlling position and released for return movement' to said second controlling position.

6. Washing apparatus comprising a vat, a

liquid supply valve for said vat biased to its closedV position, means for circulating liquid in said vat, a motor for driving said circulating means, a control member for said motor and supply valve arranged when moved to a controlling position to energize' said motor and when moved to a second controlling position to open said supply valve While the motor is energized,- a latch for locking ysaid control member in said second .controlling position and the valve in its open position, an elect yomagnet for releasing said latch when excited t ,l a predeterminedegree to permit said valve to close, the contr`ol member functioning to connect the electromagnet in the armature circuit of said motor in its second controlling position so that when the armature current builds upto a predetermined magnitude the electromagnet is energized to release said latch, and m ans biasing said control member from said secon to said iirst controlling position so that when said latch is released said control member automatically moves to said first controlling position, the control member in this position functioning to disconnect the electromagnet from thev armature circuit of said motor.

7. Washing apparatus' comprising a vat, a liquid supplyvalve for said vat biased to its closed position, means for circulating liquid in said vat, a motor for driving said circulating means, 'a control member for said motor and supply valve arwhile the motor vis energized, a latch for locking saidcontrol member in said second controlling .position and the valve in its open position, an

electromagnet for releasing said latch whenexcited to a predetermined degree to permit said valve to close, the control member functioning to connect the electromagnet in the armature circuit of said motor in its second controlling position, a cam connected to said control member. 5 means acting on said cam to bias the control member from said second to said first controlling position so that when said latch is released said control member automatically moves to said first controlling position, the control member in 10 'this position functioning to disconnect the electromagnet from the armature circuit of said motor.

8..Wa'shing apparatus comprising a vat, a liquid supply valve for said vat biased toits closed 15 position, means for circulating liquid in the vat, a

motor lfor driving said liquid circulating means, a control member movable from an oi to a pair of controlling positions, arranged when moved to the second controlling position to open said sup- 20 ply valve, a latch for locking said supply valve in its open position and also for holding said control member in said'second controlling position, an electromagnet arranged torelease said latch when y energized to a predetermined, degree, switching 25 means operated by said controlmember so that when said control member is moved from its off to i the first controlling position, the motor is energized and the electromagnet is deenergized and when moved to said second controlling position wherein 30 the liquid supply valve is opened the 4mot'or is energized and the electromagnet is connected in the armature circuit of the motor, and means biasing said control member to move from the second to the rst controlling position so that 55 when the electromagnet, operates to release the latch the control member automatically moves to disconnect the electromagnet from the armature circuit of the motor.

9. Dishwashing apparatus comprising a vat, a 5 liquid supply valve for said vat biasedto its ,closed position, means for circulating water in "supply `valve and electromagnet comprising a single control member, switching means operated 50 bysaid control member arranged when the con- 4trol member is moved in a predetermined direction from its off position toa rst controlling position to energize said motor, and when moved to a second controlling position to energize the 5|;l

motor and connect' the electromagnet in the armature circuit of thefmotor, means operated by the control member when moved to the second controlling position to open the supply valve,

a latch member operated by said control mem- 00 ber arranged to engage said latch in said second controlling position to hold said control member in said second controlling position4 and to hold the supply valve open, n'and means biasing the control member from ,the second tothe rst o5 controlling position so that when said electromagnet functions to release said latch the control member automatically moves to the first controlling position to\disonnect the electromagnet from the armatureircuit of the motor, and means operative to release said latch independently of the operation of said electromagnet when said control member is-\\manual1y .moved from the second to the first controlling position.

10. Washing apparatus compnlsing a vat. a 76 i if liquid supply valve for said vat biased to its closed position, means for circulating liquid in the vat, a motor for driving said liquid circulating means, a control member movable irom an off to three controllingY positions, arranged when moved to the second controlling position to open said supply valve, a latch for locking said supply valve in its open position and also for holding said control member in said second controlling position, an electromagnet arranged to release said latch when energized to a predetermined degree, switching means operated by said control member so that when said control member is moved from its oi to the irstl controlling position, the motor is energized and the electromagnet is deenergized and when moved to said second controlling position wherein the liquid supply valve is opened the motor is energized andthe electromagnet is connected in the armature circuit of the motor, the starting amature current of the motor rising and subsiding before the electromagnet is connected in the armature circuit when the control member is moved comparatively slowly-from the off to the rst and then to the second controlling position, means biasing said control member to move from the second to the first controlling position so that when the electromagnet operates .torelease the latch the control member automatically moves to disconnect the electromagnet from the armature circuit of the motor, and means controlled by the control member when moved from the second to the third controlling position for disconnecting the electromagnet from the armature circuit, the biasing means returning the control member from the third to the second controlling position when the member is released, the movement of the control member from the oi to the third position and subsequently when released/to the second position permitting the starting armature current of the motor to rise and subsequently subside before the electromagnet is connected in the armature circuit.

11. Washing apparatus comprising a vat, means for circulating liquid in the vat, a motor Patent no, a,1ll2-,9o2

LESLIE A, li`.EJl",iPTOl\le 1 It is hereby certified that errorl appears in the printed specification the above numbered patent requiring correction as follows",a column, line 58', for "releasesiv read release; .55, claim il, for WmembersW rea'd member; line cam; that the therein that the samemay co Office.

Sgned'arid sealed .this llithf'dayof March, A.,a 13 213390 CERTIFICATE on CORRECTION aisance for driving said circulating means, a liquid supply valve for the vat biased to its closed position, a control member for the liquid supply valve and motor movable from an oil to three controlling positions, switching means operated by the control member to energize said motor when the control member is moved to said first controlling position, `resilient means holding said control member in said position, means operated by the control member when moved from the rst to the second controlling positions for opening said supply valve,'a latch for holding said valve in its open position and said control member in said second position, an electromagnet for releasing said latch when excited to a predetermined degree, said switching means conin the armature circuit 'when the control mem-- ber is moved comparatively slowly from the o to the rst and then to the second controlling position and the switching means disconnecting said electromagnet when the control member is moved from the second to the third controlling position so that when the control member is moved directly to the third controlling position from the oi position said starting armature current is given an opportunity to rise and subside with the electromagnet disconnected and means i i l biasing the control member to move from the third toward the rst controlling position, so that when it is manually released in the third controlling position it moves automatically to the second where it is latched, and when released in the second by the electromagnet, it moves automatically to the rst Where it is held by the resilient holding means.

January 5, 1959 Acting commissioner 'df Patents-Ii Page 5, second page li, second column, lline TLL, A claim 5, for can"l read l said Letterszlatent shouldbe read with this correction nform to the record of the case ln thel Patent l