US 2671691 A
Description (OCR text may contain errors)
March 9, 1954 w. N. SCHNELL DIsHwAsHING Toor. on APPLIANCE Filed March l1, 1953 JNVENmx WILL/AM N. SCHNELL sy I Mm/KM,
a A. All
AOENEQGXQ: Y ,d
Patented Mar. 9, 1954 UNITED STATES PATENT GFFICE DISHWASHING TOOL R APPLIANCE William N. Schnell, Fort Lauderdale, Fla. Application March 11, 1953, Serial No. 341,697
6 Claims. l
This invention relates to dishwashing tools or appliances. It is the object of the invention to provide a simple tool which can be connected with the kitchen faucet or water outlet by means of a rubber hose. This tool contains a soap or detergent reservoir which may be completely filled with the liquid or other form of detergent. It is provided with a rather large mixing chamber in which the detergent is automatically mixed with water. Pressure is applied at all times to the contents of the detergent and mixing chamber. Suitable hand operated valves are provided to control the passage of the Water through the main conduit to the fountain brush and also to control the dispensing of the detergent solution into the water stream.
Most of the dishwashing tools `of this kind that have heretofore appeared on the market require the recharging of the detergent every other day or even oftener. One reason for this is that the detergent is mixed with Water in a single reservoir and this is done each time by the operator. In my tool I have a separate chamber for the detergent and a separate mixing chamber where the mixing is automatically done by the tool itself. The detergent reservoir has and can have no water in it and consequently may be completely filled with detergent. This chamber will hold enough detergent for daily use of the appliance for one to three Weeks.
'I'he rubber hose can be hooked up with the usual single faucet. Some of the new kitchen faucets are equipped with a spray attachment which is connected to the faucet below the sink level. My appliance could be used in connection with this spray attachment as a replacement for the spray head provided in this type faucet.
Referring to the drawings:
Fig. l is a longitudinal section of the tool or appliance.
Fig. 2 is a cross sectionon the line 2-2 of Fig. 1.
Fig. 3 is a perspective of the appliance.
The appliance has a narrow outer elongated shell or cylinder I which is of a sufficiently small diameter to be easily grasped in the hand. For instance the diameter may be 1%" and the length of the tool approximately 6". These dimensions are given simply by way of example and not by way of limitation. Preferably this cylinder is plastic, but it may be metal. 'I'he ends of the outer cylinder I are externally threaded to receive the caps 2 and 3. In the space enclosed by the cylinder I and the caps 2 and 3 is located a pair of metal cylinders III and 5.` These are separated at their meeting ends by means of a cup-like partition 6. 'I'hese cylinders or shells are welded together at their meeting edges over the ange of the partition. The cylinder 4 encloses a chamber 1 which is a detergent reservoir. The cylinder 5 encloses a chamber which is a water and detergent mixing chamber. Theend of shell 4 is rounded over and is engaged by the threaded cap which with the threaded narrowed end 8 supports and centers the inner shell at the rear end of the tool.
A rubber sleeve or sack I engages over the tube 9 which has perforations I0. 'Ihe end of the tube is screw threaded at I2 over which fits a cap nut I3 which is threaded over a sleeve I4 welded on the end of shell 4. 'Ihis has internal threads to take the jam nut I 5 which serves to jam the rubber sleeve or sack with an enclosed ring |'Ia up against the turned over end of the cylinder 4 so as to make a watertight seal here. The inner end of the rubber sleeve or sack fits over a ring II which has a hump which expands the end of Vthe rubber sleeve. 'Ihe ring ts over the end of tube 9 and a second tube I8 which has a small perforation I9 to admit liquid to the mixing chamber 8.
Tube I8 fits into a ring 53 with a cylinder segment or valve cradle 52 which is welded to the end wall of cylinder 5.A The tube 24 is secured in the cupped end plate 50 which is caught between the threaded cap 3 and the threaded reduced end 5| of the outer shell l. Another ring has a cylinder segment cradle 54. Push valve 2| is shown in Fig. 2. It is guided by pin 55 in slot 56 of the valve. Pin 55 screws in the short tube 51. Valve 2| has a pair of openings 22 which can be pushed in line with the end of the conduit I8 by pushing the valve from the left hand side to the dotted line position shown in the right hand side of Fig. 2. In this dotted line position water can flow through tubes 9 and I8 through the valve 2| and into the throat 23 of tube or nozzle 2,4. There is a venturi 25 on the inside of the nozzle adjacent an opening 26 in plug or valve container 28. This plug 28 is connected by a capillary tube 29 with the end of mixing chamber 5. A small orifice leads from the capillary tube to the small chamber 30 in the plug. 'I'his chamber forms a connection between the end of the small orifice 3| and the small oriice 26 perpendicular thereto. A push button valve 32 in the form of a. spring pressed thimble has a small orifice 33 which can be brought into registry with the small orice 3| when the push button is pushed in. There is a check valve lcasing 34 secured to the partition 6. In this is located a check valve 35 ordinarily covering up the opening 36 from the check valve casing to the reservoir interior l. A capillary orice 3l leads from the other end of the check valve casing.
Intheshelliislocatedametalthimbleil which is welded to the metal shell 4. This has ascrewthreaded cap ll whichcanbescrewed into the interior threads of the thimble to cover up an opening 4l into the reservoir l. Liquid detergent can be poured into the reservoir. This reservoir will take enough for one to three weeks of dishwashing in an average household.
'Ihe operation of this appliance is as follows: Water comes into the two conduits 9 and Il. If the push valve llis in the position shown in the full lines of Fig. 2, there will be no ow out through the nozzle 24. But water will flow out the capillary orince I9 in conduit It and nil the mixing chamber t. At the same time the liquid detergent will be forced under pressure out of the chamber 'I through the capillary oriilces 34 and 31 into the mixing chamber 8. The check valve Ii insures that no water will flow from the mixing chamber back into' the detergent reservoir. The orifices I9 and I0 are so calculated that the correct proportion of detergent and water will always obtain in the mixing chamber. As some of the mixture is withdrawn to be put into the water stream, more detergent and water will enter the mixing chamber to take its place automatically by reason of the pressure ail'orded by the rubber sack and the water pressure inside the sack.
After the valve 2l has been pushed to the right in Fig. 2 to open it, it will stay in this position due to the friction afforded by the rubber ring 4I. When in this open position the push button 32 is pressed down, and as long as it is held down a small amount of soap and water will be fed through the small orifices 29, 33, chamber 40, and orifice 2i into the venturi of the nozzle 24. 'I'his feeding will take place not only by pressure applied to the contents of the detergent reservoir and the mixing chamber, but also there will be a suction'action due to the venturi 35 operating on the adjoining orifice 29. As long as the push button is held in the detergent water will ilow into the water stream.
The nozzle 24 is arranged to have a fountain brush 42 having a stem 43 which slips over the end of the nozzle 24 as shown in Fig. 3 and the knurled stem 58 may screw into threads of the cupped end member 54.
'Ihe important thing in this appliance is the separate detergent reservoir and the separate mixing chamber contained in the tool itself, and the detergent and the contents of the mixing chamber subjected to the pressure in the water line by means of the rubber sack and the Perforations in the water tubing and the valves to control the water stream in the tubing and the detergent flow from the mixing chamber into the water nozzle and the brush. Now, the chambersand valves andthe tool are made up of quite a large number of separate parts in the form of cylinders, shells, tubing, valve casings and so forth. If one undertook to claim all the parts that go to make up the structure the claims would be unduly prolix and more or less superfluous. So it is proposed to claim all this structure that goes to make up the housings of the tool as shell structure and this is to include in its significance the various shells, partitions, caps, and so forth that go to make up the several chambers and which support the tubing and the valves.
What I claim is:
1. A dish washing appliance or tool comprising an elongated shell structure aifording a separate detergent reservoir with a filler opening and 4 cover therefor. and a separate mixing chamber with a small passageway connecting the rescvoir to deliver into the mixing chamber, tubing supportedbytheshellstructureandpassing through the reservoir and through the mixing chamber, said tubing provided with perforations in the portion of the tubing passing through the detergent reservoir chamber and the portion passing through the mixing chamber, the tubing having included in its line a water control valve, small tubing and a valve containing member supported by the shell structure affording a small diameter passageway leading from the mixing chamber to the tubing on the deliverv side of the water valve, a hand operated valve for controlling the flow through this detergent and water mixture line, and a rubber sleeve or sack wrapped around that portion of the perforated tubing contained in the detergent reservoir to apply water pressure to the contents of the chamber without leakage of water into the chamber.
2. The combination claimed in claim 1 with a check valve in the passageway from the detergent reservoir to the mixing chamber.
3. The combination claimed in claim 1 with the tubing on the delivery side of the water contube to the nozzle and a spring pressed push button valve in the form of a thimble having a perforation which can be brought into registry with the capillary passageway in the plug, which capillary passageway through the plug is normally closed by the thimble like valve crossing the passageway.
5. The combination claimed in claim 1 in which .the water valve is supported by xtures on the end of the tubing passing through the mixing chamber and on the rear end of the tubing forming the nozzle, the said fixtures aifording cylindrical segments constituting cradles to support a slide valve, the said slide valve being supported on these cradles and also by the shell structure. the said valve having a portion of its interior hollow with perforations in the side of the cylindrical valve which can be brought into registry with the ends of the tubing at the cradles.
6. The combination claimed in claim 5 in which the cylindrical valve is provided with a slot and a guide pin is supported in the side of the shell structure and engages in the slot in the cylindrical valve to keep the valve from rotating so as to make sure the perforations in the valve can be brought into registry with the ends of the tubing.
WILLIAM N. SCHNELL.
References Cited in the ille of this patent UNITED STATES PATENTS Number Name Date 1,532,809 Girard Apr. 7, 1925 2,069,833 Horner Feb. 9, 1937 2,540,064 Weber Jan. 30, 1951 2,545,110 Schaar Mar. 13, 1951 2,618,660 Morehouse Nov. 4, 1952 2,841,507 McGregor June 9, 1953