US 2062097 A
Description (OCR text may contain errors)
Nov. 24, 1936. H, A LlNGARp 2,062,097
WASHING APPARATUS Filed April 1l, 1934 Inventor: Her beT`t A. Lngard,
Patented Nov. 24, 1936 UNITED STATES WASHING APPARATUS Herbert A. Lingard, Harrow Weald, England,
assignor to General Electric Company, a corporation of New York Application April 11, 1934, Serial No. 720,109 In Great Britain April v20, 1933 1 Claim.
This invention relates to washing apparatus, more particularly to machines for washing dishes, and it has for its object the provision of an improved device of this character which is efficient in its operation and which is compact so that it can be readily fitted into or above the sink of an ordinary dwelling.
The washing apparatus in accordance with this l invention comprises a pump driven by a suitable motor, preferably an electric motor. The pump is arranged to be connected to a suitable source of cleansing fluid supply, such as a hot water tap or other suitable source of hot water supply, and to discharge the water received therefrom at a relatively high pressure through a suitable nozzle. y This nozzle preferably will be shaped so that the water is dischargedfrom it in a relatively flat and rwide jet. Liquid soap or some other suitable detergent may be added to the water, preferably at a point between the exit of the pump and the jetissuing from lthe nozzle. The nozzle is preferably coupled to the pump by means of a flexible conduit so that the jetcan be turned in any direction against the surfaces of dishes and like articles tobe cleansed.
In carrying this invention into effect in one form thereof, a relatively small electric motor is arranged to be connected to the domestic lighting or power circuit. Coupled `to the driving shaft of this motor is a pump, preferably of the gear wheel or centrifugal type. The intake of this pump is arranged to be connected to the hot water supply tap, or other suitable source of cleansing fluid supply, while its discharge is arranged to be connected with the. nozzle through the flexible conduit. The pump functions to raise the pressure of the water from the tap to a relatively high value and supply it to the nozzle. A suitable reservoir vcontaining liquid soap communicates with the nozzle at a point between the discharge of thepump and the discharge of the nozzle. The liquid soap may be fed into the stream of water flowing through the 'roo nozzle at a predetermined rate from the reservoir, or it may be drawn into the stream of water by the ejector action of fluid flowing through the nozzle.
' The nozzle may and preferably will be provided with a hand-operated valve to cut off the supply of water when desired. To prevent the building up of pressure and damage to the pump when the valve is closed, the pump is provided with an over-load valve' which opens at a predetermined pressure to allow the Water to circulate freely around the pump.
The apparatus comprising the pump and motor is mounted upon a panel or bracket which in turn may be mounted upon the wall of the kitchen at a convenient point above the sink. Preferably, the pump and motor unit will be enclosed in a cylindrical or substantially cylindrical sheet metal casing, provided with suitable openings for ventilation, and with means whereby the casing may be suspended from the wall above the sink.
For a more complete understanding of this invention, reference should be had to the accompany'ing drawing in which Fig. l is an elevation in section of dishwashing apparatus embodying this invention, portions being broken away to illustrate certain details of construction; Fig. 2 is a sectional view taken through the line 3-3 of Fig. l and looking in the direction of the arrows; Fig. 3 is an elevation in section of a nozzle arranged to be used in the washing apparatus shown in Figs. l and 2; Fig.'`
4 is an end elevation of a portion of the nozzle of Fig. 3; and Fig. 5 is a sectional view taken through the line 545 of Fig. 3 and looking in the direction of the arrows.
Referring to the drawing, this invention has been shown as applied to washing apparatus comprising an electric motor I0 having a shaft II that is rotatable in bearings I2. .The shaft II is mechanically connected to the shaft I3 of a pump I4 byv means of a flexible coupling I5.
The pump I4 comprises a casing IB which has in it a fluid intake passageway I'I anda discharge or outlet passageway I8. A supply con'- duit 2D communicates with the supply passage-.p way Il and a discharge conduit 2I communicates with the discharge passageway I 8. The casing also has a suitable opening 22 for rotor members 23 and 24 meshing with each other, as clear# ly shown in Fig. 2. These members 23 and 24 are mounted upon spindles 25 :and 26, respectively, which in turn are mounted in bearings 21. The spindle 25 is connected with the pump shaft I3 so as tobe driven directly by the motor.
'I'he pump is closed by end plates 30 and 3|, and a stufling box 32 for the main shaft I3 is provided in the end plate 30. The pump is secured relative to the motor by means of a supporting member 33 having a substantially semicircular cross-section and projecting from the motor frame, as shown in Fig. 1. The member 33 is provided in its bottom with a drain outlet 34 that communicates with a drain pipe 35 which serves to drain away any Water which might pass from the stuffing box 32.
The pump and motor are encased Vby a suitable casing 36 which, as shown in Fig. 2, has a substantially cylindrical shape.
The end Walls 31 of this casing slip over the ends of the casing, as shown in Fig. l, and are secured to the motor and pump respectively by means of bolts 38 and 39. These end walls, as shown,` are provided with' openings 40 providing for ventilation of the casing.
A liquid soap container or reservoir 4I is secured to the end Wall 31 at the right-hand end.
of the casing, as viewed in Fig. 1. If desired, this reservoir may be included in the casing, together with the motor II) and the pump I4. The bottom of the reservoir is provided with a discharge conduit 42.
The discharge 2I of the pump I4 and the discharge conduit 42 of the reservoir communicate with a suitable nozzle member 43 through flexible conduit members 44 and 45, respectively. The conduits or pipes 44 and 45 are tted to the ends of steel tubes 46 and 41 respectively in the nozzle and are secured to these pipes by means oi a clip 48. The pipes 46 and 41 pass through a handle member 50 which may be made of any suitable material, but.V preferably will be made of a molded resinous material, and. which preferably will have a substantially oval shape, as
shown in Fig. 5. A toe 5I is provided at theV supply end, as shown. The handle 50 is held in position by the flexible tubes 44 and 45 at the supply end and by the body 52 on the nozzle at the delivery end. The tubes 46 and 41, as shown, are screwed into this body member 52, which preferably will be made ofbronze.
The hot water from the tube 46 is controlled by means ,of a suitable valve 53 which rests upon a valve seat 54. 'I'he discharge side of this valve communicates with a nozzle member 55 in'whi'ch are provided three fiat -relatively wide nozzle holes or discharge openings 56. This nozzle member also preferably will be formed of bronze. In view of the fact that the nozzle openings 56V are relatively Wide and narrow, the fluid flowing from them will issue in a relatively thin and wide sheet or jet.
AThe supply of soap from the conduit 41 to the nozzle member 55is controlled by a valve plunger 51 which leaves a. clear passage through the flat portions 58 of the valve rod 60 when the rod is depressed from the position shown in Fig. 3 sufilclently to clear the shoulder 6I.
l The valve 53 is biased to its closed position by means of a suitable compression spring 62 and is opened by depressing the valve rod 6I). As shown, the rod is provided on its upper end with a knob 63 which may be depressed by a suitable manually operable lever member 64 which in turn is provided with a suitable` operating knob 65.
When the valve rod 60 is depressed by the handle 64 against the spring 62, the valve 53 will be opened at once from seat 54 to permit water to flow to the nozzle member 55. 'I'he plunger 51, however, does not clear the shoulder 6I until the rod has been moved a relatively short additional amount, such for example as 11g. vThus, the initial movement of the rod 60 supplies a jet of water only, and further movement of the rod Vis necessary before the .soap solution is admitted to the jet.
The control knob 65, which is arranged for convenient operation by the thumb of the hand of the attendant who grips the handle 56, depresses the lever 64 to actuate the valve rod 60. The knob 65, as shown, is arranged to slide for a short distance to the left on the handle 64, asv
viewed in Fig. 3. In doing this, the knob slides a shoulder 66 arranged on a block 61 attached to the knob to a position where, when depressed, itwill rest upon a shoulder 68 on the body of the valve. In this way, depression of the lever 64 on the rod 60 is arrested so that hot water alone may be delivered, the soap valve 51 in this position of the lever being in its closed position. By sliding the knob to the position shown in Fig. 3, the shoulders 66 and 66 clear each other so that the lever may be depressed to admit soap to the nozzle member.
'Ihe pump is provided with by-pass passageways 10 connecting the discharge passageway I6 of the pump with the inlet passageway I1. Within the by-pass passageways is a relief valve 1I which is biased to its seat by means of a spring 12, and which opens when `the pressure in the discharge passageway I8 becomes excessive due to closure of the water valve 53 in the nozzle. It will be observed, therefore, that when this valve is moved to its closed position, the water flow through the nozzle will be shut oil.' and the discharge into the passageway I8 from the pump will be circulated about the pump into the inlet passageway IL The casing 36 is provided with suitable supporting brackets 13 whereby the casing can be supported from a wall or panel arranged in a suitable location, preferably above the kitchen sink.
In the operation of thedevice, it'will be understood that the inlet passageway I1 of the pump will be connected witha suitable source oi.' water supply, such as a hot water tap, by means of the conduit 20. The motor I0 will be plugged into a suitable source of electrlcalsupply and then the water will be turned on tothe pump from the tap. When the water has been turned on it will be delivered to the nozzle 43 at a relatively high pressure. In order to wash the dishes, the control knob 65 is depressed to open the water valve 53 so as to allow the water to issue from'the nozzle in a relatively wide flat jet. If it is desired to mix soap with the stream of water issuing from the nozzle, the handle 65 will be depressed to such an extent as to open `the controlling member 51 for the soap, whereby soap can flow from the conduit 41 through the nozzle. The soap is dawn out into the stream owing from thel nozzle by means Vof the ejector action of the stream, which causes' a reduced pressure-in the soap passageway inthe nozzle. found that the stream of hot soapy water issuing in a fiat jet under pressure from the nozzleis quite eiIective in removing the most adhesive substances from plates, dishes and the like.
While I have shown a particular embodiment of my invention, it will be understood, of course. that I do not Wish to be limited thereto since many modications may be made, and I, therefore, contemplate by the appended claim to cover any such modifications as fall within the true spirit and scope of Vmy invention.
What I claim as new and desire to secure by Letters Pat-ent of the United States, is:
Dishwashing apparatus adapted to be supported in an elevated position above a sink and the like comprising a pump, a supply conduit communicating with the intake of said pump and adapted to be connected to a water supply source, a second conduit communicating with the dis- .charge of said pump, a flexible conduit connected motor in an elevated position on the lwall of al room or the like, a soap container,means attaching saidsoap container to said pump and motor structure and a flexible conduit connectin g said soap container with said nozzle.
' h HERBERT A.'LINGARD. Y
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