Патент USA US2107340код для вставки
Patented Feb. 8, 19.38 2,107,3e0 UNÃTED STATES ÀTENT OFFÍCE 2,107,340 WASHER Ireneé P. Pedrick, Philadelphia, Pa., assigner to William Sellers ¿t Company, Incorporated, Philadelphia, Pat, a corporation of Pennsyl Vania Application October 9, 1934, Serial No. 747,559 5 Claims. (Cl. 299-84) This invention relates to'an improvement in cates with a water chamber g in communication locomotive washer. with a water inlet h, in the casing, which is adapt As is well known, it is customary to wash loco ed to be connected by a conduit h' with a source motives when they are serviced by the removal of water. The section f’ of the forcing tube ex of ashes and replenishment of their coal and tends through the end of the casing and is water supplies. threaded at its forward end for the reception of For .the washing of a locomotive it is customary to pass the locomotive between stations, as plat forms, and to direct upon it from both sides a plurality of sprays of water containing a grease solvent, as coal oil, Oakite (trisodium phosphate) or the like. Heretofore the washing apparatus has been relatively complicated and expensive, consisting of a pressure tank containing `the solvent, or provided with a solvent feed, and a powerful pump whereby water is Vsupplied to the tank and pressure therein maintained. Hose lines leading from the pressure tank are connected with f i sprayer heads held by the washers, who direct the sprays upon the locomotive as it passes be tween the stations. Now in accordance with this invention there is provided a simple and inexpensive device where L, by the required high pressure spray of water and solvent for the washing of a locomotive is provided with maximum eli'iciency, with exact regulation of the desired proportions of solvent and water, and at a minimum of expense for , apparatus and for operation. Having indicated in a general way the nature and purpose of this invention, I will proceed to a detailed description thereof with reference to the accompanying drawing in which: :1 3 Figure 1 is a longitudinal sectional View show ing an'embodiment of this invention. a house coupling x. Surrounding the forcing tube is an overflow chamber z' adapted for communication with an overflow discharge y' through a port controlled 10 by a valve 1c, and in communication with the forcing tube through a port y therein between the sections f and f’. Y ' A passage m, formed in the casing a, affords communication between the overflow chamber z' 15 and the atmosphere. The passage mis controlled by means of an adjustable needle valve n; Referring now to Figure 2, the passage >m, in casing a, controlled by adjustable needle valve n is arranged to be connected with a source of solvent or solution through a conduit r controlled by a spring ball check valve s. In the embodiment shown in Figure 1 and as modified as shown in Figure 2 the forcing tube section f may, if desired, be provided with aper 25 tures t. In practice, using the embodiment shown in Figure 1, a suitable hose equipped with a spray head is coupled to the end of the section f’ of the forcing tube and steam and water turned on, steam passing through nozzle c will force water, 30 from the water chamber g, through the forcing tube. At the same time, partial condensation of steam on meeting the water at the discharge end of steam nozzle c will create a partial vacuum which will operate to lift solvent, as coal oil, an 35 Figure 2 is a detail sectional View showing a A “Oakite” solution, or the like, from the supply modification in the structure of the embodiment of this invention shown in Figure 1. ` Referring more particularly to Figure l, a in dicates a casing which may be made of any suit able material and may, for example, be a casting. Into one end of the casing a extends a nozzle b, controlled by an adjustable needle valve l, and ¿S3 adapted to be connected through a conduit o, controlled by a gravity ball check valve p, with a source of solvent or solution, about the end por tion of which is a steam nozzle c, which communi cates with a steam chamber d in communication with a steam inlet e in the casing adapted to be connected by a conduit e’ with a source of steam. Extending from the steam nozzle c is a forcing tube comprising sections Í, Í’. The rear end of the forcing tube embraces the forward end of the steam nozzle c and of the nozzle b and communi thereof for delivery through nozzle b with the water discharged through the forcing tube. Back pressure into the supply of solvent or so lution will be prevented by the ball check valve 40 p and the delivery of solvent through nozzle b will be controlled by needle valve Z. A The stream of admixed water and solvent or solution passing through the forcing tube at high .velocity will create a partial vacuum on the over flow passage i, which results in a drawing into chamber z' of air through passage m under 'con trol of valve n., which is adjusted to admit a de sired amount of air. The air passes from cham ber z’ through the port y, and through apertures 50 t, if they be provided, into the periphery of the stream as it passes from section f to section f’ of the forcing tube, with the result that the ho mogeneity of the stream is broken up so that 55 :1107,346 2 the atmosphere, a check valve positioned in said on discharge against a surface at high velocity through, for example, a nozzle, it will readily break up and exert an increased washing action discharge passage to prevent entry of air there through, a steam nozzle'within said casing adapt over that obtained by a stream free from` air. In practice using the modification shown in Figure 2, the passage m is connected to an ele vated source of solvent or solution throughcon duit 1‘, while the nozzle b is left open to the at forcing tube provided with a port in communica tion with said overiiow chamber and adapted to receive steam from said nozzle, separate conduits for the supply of solvent and water to said forc ing tube undery the influence of vacuum created by the jet of steam from said nozzle, said con duits preventing the solvent and water from min mosphere through gravity check valve p. In op eration air is drawn into the center of the stream formed in forcing tube section f, through nozzle b, under control of valve l, by the vacuum cre ated by the condensation of steam issuing from steam nozzle c which is suiiicient to raise gravity 15 check valve p. ed to be connected to a source of live steam, a gling until they reach the forcing tube, a sec ond passage formed in said casing and affording communication between said overflow chamber and the atmosphere, and a needle valve adapted 15 to regulate the amount of air flowing through At the same time solvent, under the control of valve n, passes check valve s and said second passage. flows into chamber i, from which it passes, under 2. The method of forming a jet of admixed wa the influence of vacuum drawn on chamber i by ter and solvent containing air dispersed therein, the passage of the stream through the forcing which comprises drawing water and solvent sep and which acts to open check valve s, arately into a conduit under the influence of a 20 , tube, ~through port y, and apertures t, if they be pro jet of steam directed into said conduit, admit vided, into the stream. The air drawn into the ting air in controlled amount to the stream of center of the stream breaks up its homogeneity water and solvent in said conduit and discharging so that it readily breaks on discharge, at high the said stream carrying air from said conduit in 25 velocity, through, for example, a nozzle, against a jet. a surface and gives increased washing effect. 3. The method of forming a jet of a’dmixed It will be noted that while overflow may oc water and solvent containing air dispersed there cur from the forcing tube through chamber i in, which comprises drawing water and solvent when the device is initially started, by the turn separately into a conduit under the influence of 30 Ying on of steam and water, such overñow will a jet of steam directed into said conduit, ad be small and will not, even in part, pass out mitting air in controlled amount to the center of through passage m if the valve n, in the em the stream of water and solvent in said conduit bodiment shown in Figure 1 be kept closed until and discharging the said stream carrying air the jet has formed; and cannot pass into the from said conduit in a jet. source of solvent or solution in the modification y4r. The method of forming a jet of admixed shown in Figure 2 since the check valve s will water and solvent containing air dispersed there prevent. i Y . When the device is not in use, it is only nec essary to turn off the steam and water, it being noted that in the embodiment shown in Figure 1 there is no gravitational flow of solvent which needs to be controlled, While in the modification shown in Figure 2 the check valve s prevents the flow of solvent. It will be appreciated that variousV modifica tions in detail may be made in the apparatus herein described and illustrated without depart ing from the scope of this invention. Thus, for example, the solvent delivery nozzle may be vari ously led into the casing and, if desired, the sol vent may be delivered gravitationally at any in, which comprises drawing water and solvent separately into a conduit under the influence of a jet of steam directed into said conduit, admit ting air in controlled amount to the periphery of the stream of water and solvent in said con duit and discharging the said stream carrying air from said conduit in a jet. 5. A washer including, in combination, a cas ing, an overflow chamber in said casing, a dis charge passage from said .overflow chamber to the atmosphere, a check valve positioned in said discharge passage to prevent entry of air there through, a steam nozzle within said casing'adapt- , ed to be connected to a source of live steam, a forcing tube provided with a port in communi cation with said overflow chamber and adapted forcing tube. to receive steam from said nozzle, separate ,con As will be obvious the washer in accordance duits for the supply of solvent and water'to said with this invention will be adaptable for use in » forcing tube under the influence of vacuum cre washing variously and that it is not contemplated ated by the jet of steam from said nozzle, said that this invention shall be in any way limited conduits preventing the solvent and water from by the above description of a preferred embodi mingling until they reach the forcing tube, a ment thereof with reference to the washing of second passage formed in said casing and af tu fording communication between said overflow 60 locomotives. What I claim and desire to protect by Letters chamber and the» atmosphere, and a valve adapt ed to regulate the amount of air flowing through Patent is: 1. A washer including, in combination, a cas said second passage. ' suitable point for discharge with water from the ing, an overflow chamber in said casing, a dis 65 charge passage from said overñow chamber to IRENEÉ P. PEDRICK.