US 3163880 A
Description (OCR text may contain errors)
Jan. 5, 1965 E. L. JOHNSON MOBILE LIQUID SPRAY UNIT Filed June 17, 1963 6 Sheets-Sheet 1 UZQAMM 2 2 i 2/oo/ v ,4 $1 M,
- Jan. 5, 1965 E. L. JOHNSON 3,163,880
MOBILE LIQUID SPRAY UNIT 6 Sheets-Sheet 2 Filed June 17. 1963 INVENTOR. EDWIN L.JoHNsoN ATTORNEYS Jan. 5, 1965 E. L. JOHNSON 3,163,880
MOBILE LIQUID SPRAY UNIT Filed June 17, 1963 6 Sheets-Sheet 3 32 25'39' 23 3s 24 25 if 31 25' 22 22 36 3 s 39 37 37 e 7 28 as 28 8 I9 29 29 5 INVENTOR ATTORNEYS 1965 E. L. JOHNSON 3,163,880
MOBILE LIQUID SPRAY UNIT Filed June 17, 1963 6 S e see 4 lo 200 v 94 '98 4 INVENTOR.
EDWIN L. JoHNsoN AZT'OR NEI'YS Jan. 5, 1965 E. JOHNSON 3,163,880
MOBILE LIQUID SPRAY UNIT Filed June 17, 1963 6 Sheets-Sheet 6 ATTORNEYS United States Patent 3,1635% MGBEE LIQUID SPRAY UNIT Edwin L. Johnson, Gttawa, Kenn, assignor to Young Spring & Wire Corporation, Beverly Hills, Los Angeles, Qalifi, a corporation of Michigan Filed dune 17, 1963, fier. No. 288,359 11 Claims. ((15. 15-626) This invention relates to a mobile sign washing unit, and more particularly to a truck having a tank body and receptacles for carrying washing water and detergents and an adjustable bucket seat for supporting a person for washing and cleaning signs or other objects of a height above the ground which are not conveniently accessible from the ground.
Various types of signs are mounted along highways, adjacent motels and other places of business of a structure which need cleaning at intervals, and such signs are not easily accessible by a person from the ground. Various hand means have been devised for washing signs including standing upon ladders and the like which are cumbersome and often times causing accidents along the highway and are generally inefficient.
It is the principal object of the present invention to provide a mobile unit which may be driven alongside the sign and which carries on the unit water and detergents in separate tanks or compartments and the mobile unit including a support for a bucket seat to support a person for operating a brush having attachments through vari ous tubes to the tanks of the mobile unit and by manipulation of levers and valves the bucket seat may be adjusted to the proper height with respect to the sign and also by manipulation of other levers water or water and various etergents can be utilized through the brush to clean the signs.
ther objects of the present invention are to provide the truck with a frame structure having a tank or compartment built over and above the rear wheels of the truck and supported by the side frame members of the truck; to provide a resilient mounting for the tank on the truck; to provide the tank with struts or partition members having openings therein for allowing the liquid to pass through the partitions and wherein the partitions and struts will strengthen the tank; to provide an opening in the top of the tank having a removable cover portion for the purpose of easy cleaning thereof at intervals; to provide a framework structure on the cover of the tank consisting of cross members for strengthening the body of the tank structure; to provide a plurality of cross members on the cover having spaced, curved recesses for receiving a plurality of barrels or tanks therein separated for containing different types of detergents and liquids; to provide a housing for the separate containers mounted on the cover of the tank; to provide a support at the rear of the truck; to provide an arm pivotally mounted to the upper end of said support to an outer end of which the bucket seat is pivotally attached; to provide an arm spaced from the upper end of the support having a link connected to one end thereof and pivotally connected to the lower portion of the bucket seat; to provide an extensible member such as a piston and cylinder having one end pivotally connected to a bracket near the upper end of said support and its other end to said arm for raising and lowering said bucket seat; to provide hydraulic means for rotating said support to move the bucket seat transversely of the truck; to provide a fluid supply carried by the truck for operating the hydraulic cylinders or extensible members to move the bucket seat as required by the user; to provide connections :between the tanks and compartments of the water and detergent to a brush having a handle for manipulation by the user of the cleaning equipment; to provide controls for the user of the equipment for manipulation of the various valves for admitting fluid from the tanks to the brush and for operating the hydraulic equipment; and to provide means for mounting the rotatable standard on the truck. 7
Still further objects of the present invention are to provide a drum at the rear of the truck body for mounting of a hose having connection with the tubular members connected to the tank whereby the device may be used for spraying of weeds or other growth in fields, along the highway and other places, and to provide a device of this character simple and economical to manufacture.
Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings wherein are set forth by way of illustration and example certain embodiments of this invention.
FIG. 1 is a perspective view of my invention with the front end of the truck broken away showing application of the cleaning brush to the sign.
FIG. 2 is an elevational partly fragmentary perspective view of the framework for mounting of the tanks or barrels for the detergents with part of the housingbroken away.
FIG. 3 is an elevational fragmentary view of the side members of the frame 'on the truck showing the cushioning mounting for the tank body.
FIG. 4 is an elevational cross-sectional view of the cushion mounting.
FIG. 5 is an elevational fragmentary perspective view showing the strut and partition arrangement in the main tank of the structure.
FIG. 6 is an elevational perspective view of the sup port and arm arrangement for the bucket seat and particularly illustrating the hydraulic equipment for rotating the support and seat therewith transversely of the truck.
FIG. 7 is an elevational fragmentary view showing the hose connections to the tanks.
FIG. 8 is a fragmentary view particularly illustrating the levers and valve members and hose connections leading from the tanks and hydraulic equipment to the bucket seat for use by the operator.
FIG. 9 is a diagrammatic view of the fluid and tank arrangement with the connections thereto and solenoid valves for operation of the water and detergents either heated or cold for admission to the brush cleaning apparatus.
FIG. 10 is a diagrammatic view 'of the hydraulic cylin- V tiers and valves and pump and motor arrangement for the operation of the hydraulic cylinders for movement of the bucket seat.
FIG. 11 is a plan view of the main tank showing the drain plug openings for filling the tank and for draining same.
FIG. 12 is an elevational perspective view showing the mechanism for locking the bucket seat to the cover while transporting the vehicle.
Referring more in detail to the drawings:
The reference numeral 1 designates a mobile washing unit embodying the features 'of my invention comprising a vehicle or truck 2 having rear wheels 3 and front wheels 4 including a framework 5.
The frame 5 includes side members 6 and 7 for supporting a tank 8 having a bottom 9 and a top 10 having an open portion it). The tank 8 is rearwardly of the cab 11 of the truck. The bottom 9 of the tank 8 has a cut-away portion 12 to accommodate the wheels 3 is illustrated in FIG. 1. The tank 8 has sides 13, a front end 14. and a rear end 15. Mounted within the tank and spaced longitudinally therein are struts or strengthening members 13, 14 and 15 having a plurality of notches 16 and 17 for allowance of liquid to pass therethrough in the tank and to assist in mixing of the liquid when Patented Jan. 5, 19 65 and spaced from each other longitudinally of the frame 5. These transverse members 23 engage upon and are secured to the horizontal arm 23' of the brackets 13 and 19 by bolts and are also fastened to angle-shaped members 24 and 25 which have their horizontal portions 26 engaging under the upper horizontal portions 23' of theU-shaped brackets. L-shaped brackets 28 are provided to engage inside the U-shaped bracket members 18 and 19 and have a leg 29 engaging the lower arms 30 of the U-shaped brackets 18 and 19 as illustrated in .FIG. 4.
In order to resiliently mount the tank 3 on the U- shaped brackets 18 and 19 as just above described, 1 provide spaced neoprene members 32 and 33 on each end of the plate 23 and longitudinally of the tank 8 and over the neoprene members is a U-shaped member 34 having plates 34' provided with threaded openings 35 for receiving the threaded ends 35' of stud bolts 36 which extend throughopenings in the plate member 23, alongside the horizontal port-ions 23' of the U-shaped members 13 and'19 and the horizontal leg portion 26 of the L- shaped members 24 and 25, said opening being larger than the stud bolt to allow movement therein. Neoprene collars 37 are inserted over the bolts 36 with Washers- 37 and nuts 38 for the bolts 36 for fastening the tank 8 to the side members 6 and 7 in a'resilient manner.
The front and rear transverse plates 23 at substantially the center thereof are provided with cylindrical members 39 and mounted for vertical movement therearound is a neoprene cushioning'ring 39'. A cylindrical sleeve 40 is bonded by suitable means to and engages around the neoprene cushioning ring 39for providing additional cushioning effect to the mounting of the tank on the side membersof the truck. This will provide vertical cushioning as Well as a lateral cushioning effect. The ring 39 is rigidly secured to the like as indicated at 41.
While only one of the cushioning members has been described, there are five spaced plates 23 secured to the bracket members 18 and 19 longitudinally of the tank for mounting of the tank on the truck bed.
Mounted on the top It) of the tank 8 is a framework structure .42 consisting of longitudinal side members 43 secured to a plate 43 on top of the tank 8 covering the opening 10 and having spaced uprights 44 having their tops secured together by cross members 45, as illustrated in FIG. 2. Spaced longitudinally of the plate 43' and between the side rails 43 are supporting members 46 secured to the plate 43' by brackets 47, and each support .6 is provided with longitudinally aligned grooves or cutaway portions 48 and 49 for the reception of barrels or tanks or the like as indicated at A and B (FIGS. 1 and 7). I preferably utilize four barrels, as shown by the grooves in FIG. 2, but I have here illustrated two barrels side by side on one side of the center cross member 51, the barrels C and D being shown diagrammatically in FIG. 9. A housing 52 is provided for the barrel tanks. The tank 8 may be utilized'for storing water and the barrels for liquid soap, detergents, chemical cleaning material and the like. a
The rear portion of the vehicle or truck has a frame portion 53 extending rearwardly of the rear wheels 3 and includes an upright corner member 54, a lower sill member 55 and cross member 56 including a cross bar 57 at the top rear end of the tank. A plate 58 is secured to the cross arm 55 and a bracket 58' is pivotally secured thereto by a pin or bolt 59. The bracket 58' has an extension arm 60. An upright support 61 is rigidly .rnounted by welding or other suitable means on the bracket 58' and extends upwardly slightly above the top of the housing 52 for the barrel tanks. A rearwardly plate 23 by welding or the extending arm 62 is rigidly secured to the cross member 57 and the upright 61 is rigidly secured to an arm 62 by welding or other suitable means, said arm being pivotally attached by a pin or the like 62 to prevent backward tilting of the support 61. r
The upper end of the support 61 is bifurcated as indicated at 63 and pivotally mounted to the bifurcated end 63 by in pin or. the like 64 is an arm 65 extending forwardly toward the cab 11 of the truck. A bucket seat 66 is provided and is pivotally mounted to the forwardly extending arm65 by rearwardly extending brackets 6'7 and 68 having openings 69 and '70 in their outer ends for receiving a shaft 71 extending through an opening 72 in the forward end 73 ofthe arm 65. Brace arms 74 are provided having one end rigidly secured to the arm 65 as indicated at 75 and their forward ends rigidly secured to the shaft 71 as indicated at 76 (FIG. 6).
The bucket seat includes a foot rest '77 and secured to the rear side of the foot portion 78 is a brace member '79 having rearwardly extending cars 39 to which is pivotally attached by a pin'sl a link 82. Brackets 83 have one end rigidly secured by welding as indicated at 84 on each side of the upright post 61 and the brackets 83 have offset forwardly extending arms 85 to which is pivotally attached the other end of the link 32 by a pin The brackets 33 are provided with aligned openings S7 for receiving a pin 881cm pivotally mounting the piston rod 89 of an hydraulic cylinderv 90, the end 91 of which is pivotally attached by a pin 92 to downwardly extending brackets X; rigidly attached on each side of the forwardly extending arm 65 by welding or other suitable means as indicated at 94. The hydraulic cylinder )3 is provided for raising or lowering the bucket seat for the operator 95 and the link 82 will keep the seat in upright position at all times.
In order to rotate the bucket seat 66 transversely of the vehicle, 1 provide a bracket 95 secured to the bottom 96 of the extension 53 of the'framework structure of the vehicle (PEG. 6) and pivotally secured thereto by pin 97 is one end 9t; of an hydraulic cylinder 99 having a bifurcated end 1% on the piston rod 101 of the cylinder, the bifurcated end being pivotally secured by a pin 1132 to the extension arm 6% of the bracket 53'. The bottom 9 of the tank 8 has a drain opening 193 with a closing plug 193 (FIG. 11) for draining the fluid from the tank and for washing accumulation of sediment therefrom. A filling opening 104 is provided in the top 10 of the tank and is provided with a plug 164.
Extending vertically through the tank 8 is a tube 105 through which lines 1%, 167, 163 and 1tl9 are run to the barrel tanks A, B, C and D mounted above the tank 8. The barrels have the usual filling openings as indicated at having the usual closing plugs 110. One end of the resilient tubular members 106 to 199 inclusive is connected to openings (not shown) near the bottom of the tank by a nipple or the like (also not shown) as is the usual practice.
Manipulation of the bucket seat 66 is provided through hydraulic means and consists of a tank 12) for the hydraulic fluid or which may be supplied from the hydraulic equipment of the truck. 121 designates a hydraulic motor for supplying pressure in the system through a pump 122 operated from the power take-off 123 of the tractor. A control panel 124 is provided on the bucket seat within easy reach of the, operator 95. A line 125 is connected to the pump 122 and to the valve mechanism 118 as indicated at 126 and line 127 leads from the hydraulic fluid tank to the pump 122. A line 128 connects the hydraulic motor 121 with the valve 118 as indicated at 129. A line 139 has a connection 131 with the valve 118 and is connected to the tank 120 as indicated at 132. A line 133 has one end connected to the hydraulic motor and also connects with the line 132 leading to the tank 129.
A fiuid line 134 is connected to one end of the hyaneaeso draulic cylinder 98 and to the valve 118 as indicated at 135. Another line 136 is connected to the other end of the hydraulic cylinder 91 and to the valve 118 as indicated at 137. A line 138 connects to one end of the cylinder 99 and to the valve 118 as indicated at 138'. A line 139 is connected to the other end of the hydraulic cylinder 99 and to the valve 118 as indicated at 140.
A main valve lever 141 is provided for the valve 118 mounted on the instrument panel 124 and manipulation of this valve opens the system and energizes the hydraulic motor 121 for exerting a pressure in the hydraulic system. Operation of the pump 122 through the power take-off from the tractor will cause fluid to flow from the tank 120 through lines 127 and 125 to the valve 118. Valve levers 142 and 143 are provided on the panel adjacent the main lever 141 and valve 143 will operate hydraulic cylinder 99 for swinging the arm 65 and the bucket seat laterally with respect to the truck. Movement of the valve 143 in one direction will cause the fluid to how to one end of the cylinder and in the opposite direction to the other end of the cylinder as shown. Movement of the lever 142 in one direction will cause the fluid to flow through line 134 to extend the piston rod and the hydraulic cylinder 90 to raise the bucket seat and movement of the lever 142 in the opposite direction will cause the piston rod to retract through movement of fluid through line 136 to lower the bucket seat 56. When the hydraulic motor is running, the hydraulic fluid will move from tank 129 to the pump 122 and then through the line 125 to the valve 118. It will move continuously when the main valve 141 is open through line 131 back to the tank 120 or it may be bypassed through line 1"3 from the valve 118 to the motor 121 and then through line 133 to tank 120.
By'referring to FIG. 9 as shown, there is a diagrammatic view of the water supply tank and its connection to the motor of the vehicle and radiator and also lines connecting the various tanks for the chemicals.
8 represents the water tank on the truck, 145 the engine of the truck and 146 the radiator. A small water tank 147 is connected by a line 148 to the water tank 8 and a line 149 connects the tank 147 with a mixing chamber 150. 151 designates a water pump having a line 152 connecting with the arm 153 of a brush 154. Aline 155 connects one end of the tank 147 with a heat exchanger 156 and a line 157 connects the other end of the heat exchanger with the tank 147. A line 158 connects the radiator with the engine 145 and has a branch line 159 provided with a valve 160 leading to one end of a coil 161 in the heat exchanger 156 and the other end of the coil includes a line 159' leading to the radiator 146 as indicated at 162. A branch line 163 is connected to the line 159 and connects with the pump 164 which in turn is connected to the engine 145 as indicated at 165. The connections with the engine and radiator are for supplying hot water to the mixing chamber 15% as desired.
Valves 170, 171, 172 and 173 are connected in the lines 166, 107, 198 and 169 adjacent the tanks A, B, C and D (FIG. 9). Needle valves 174, 175, 176 and 177 are connected to lines 106, 107, 1138 and 1159 respectively. Lines 166, 167, 168 and 169 are connected to the needle valves and to the mixing chamber 150. Solenoid valves 178, 179, 189 and 181 are also connected in the lines between the needle valves and mixing chamber 150 (FIG. 9).
The panel board 124 has control levers 182, 183, 184 and 185 with circuit lines (not shown) but extending through the tube 186 adjacent the control levers and leading to the solenoid valves 178 to 181 inclusive. The valve 160 has a lever 187 which when closed shuts oil the circulation of hot water through the tank 147.
The truck 2 is driven to a site for use such as cleaning of a sign 188 supported above. ground by posts 189. The truck is driven alongside the sign and through manipulation of the levers 142 and 143 the proper height and transverse adjustment of the bucket seat 66 is made. With the vehicle and bucket seat in the'position shown in FIG. 1,
operation of the engine will energize the pump 151 and opening the main valve 141 will cause the water to flow through line 148 through tank 147 and line 149 through the mixing chamber 159 and through line 152 to the brush 154 for contacting the water and brush with the sign to clean the same.
The tanks A, B, C and I) may house chemicals of the same character or of difierent character as desired. The needle valves 174 to 177 are set to allow the desired stream of the respective chemical therethrough and the valves 17% to 173 opened. Operation of lever 182 on the panel board will cause the solenoid 178 to move the stem 19! against the tension of the spring 191 and move the plug 192 past the opening in the line 166, thus allowing chemicals to flow therethrough and mix with the Water in the mixing chamber 150. When the chemical from tank A is depleted, then manipulation of the lever 183 will open solenoid valve 179 in the same manner. if the tanks A, B, C and D contain ditierent chemicals and all of the chemicals are desired to be used with the Water at one time, then the levers 182 to inclusive may be manipulated to open the solenoid valves 176 to 181 and the chemicals and water will mix in the chamber 150.
When it is desired to use water heated by the engine and radiator of the vehicle, the valve 160 is opened by the lever 187 and the pump 164 will cause the water to circulate from the engine to the radiator and pass through line 159 through the coil 161 in the heat exchanger 156 to heat the water therein, which will then pass out through the lines 157 and 149 to the mixing chamber 150. The Water from the tank 8 will pass through the line 148 to the tank 147, then through the line 155 to the heat exchanger 156 for circulation of the water therethrough, which will be heated by hot water from the engine passing through the coil 161 in the heat exchanger 156. The hydraulic motor 121 will operate the pump 151 in the water system. Chemicals from tanks A, B, C and D may be used with hot water in the same manner as with cold water.
A locking mechanism 193 is provided for the arm 65 and bucket 66 for transporting the vehicle from place to place and consists of a U-shaped bracket member 194 mounted underneath the bottom 77 of the bucket seat, and the bracket extends longitudinally with the front side 195 of the bucket or transversely of the side 196 thereof. The-arms of one end of the bracket 194 have a sloping or angled face 197 and a flange 19% extending outwardly from said sloping surface 197. Mounted on the top part of the tank 8 near the cab 11 of the vehicle and transversely of the side 13 of the tank is a block 209 having a tongue 261 extending toward the side 13 and on each side of the tongue are sloping faces 202. The
block 2% is provided with a vertical open tube 203 for receiving a pin 204 mounted in a rocking arm 2115 having one end secured to a shaft 206 extending through the front wall 195 of the bucket seat and provided with an upwardly extending arm 267. The shaft is mounted in bearings 298 and a standard 299.
When it is desired to lock the bucket in place for transportation of the vehicle, the swinging cylinder 99 is manipulated through the controls, as above stated, and the U-shaped member having its sloping edge 197 facing the tonge 2111 will cause the point 210 of the pin to engage the cam surface 211 of the tongue and move thereover and, when it reaches the opening 293, will automatically enter therein, the point 211 being springurged (not shown) as is the usual practice. When the pin 234 is inserted in the opening 2113, the sloping face 197 will be parallel to the sloping surface 202 of the block 2% and the flange 198 will engage under the base 212 of the tongue and the tongue 201 will engage in the opening 213 between the arms of the U-shaped bracket member 194. When it is desired to release the locking pin 204, the lever 2&7 may be moved to the left to raise the bracket arm 265 and the pin from the opening 223 and the controls of the swinging cylinder 99 manipfor use in spraying weeds and the like along the 7. ulated to move the bucket away from the locking mechanism.
A- chamber 214 isprovided in the rear of the frame under the tank 8 and mounted therein longitudinally of the frame is a drum 2115 for a hose (not shown). The hose may be connected to the line 152 adjacent the pump 151 and is provided with a spray nozzle (also not shown) highway and other places. In use of this hose, chemicals suitable for killing weeds, insects and the like are used in tanks A, E, C and D.
It will be obvious from the foregoing that I have pro-.
vided an improved washing mechanism mounted upon a truck for large sign cleaning purposes and having Water and chemical tanks mounted thereon and controls for operating the valves and mechanism for using Water alone or Water and chemicals simultaneously in such washing procedure. I
It is to be understood that While I have illustrated and described one form of my invention, it is not to be limited to the specific form or arrangement of parts herein described and shown except insofar as such limitations are included in the claims.
What It claim and desire to secure by Letters Patent is:
l. A washing unit carried by a vehicle having a frame and side members comprising,
(a) a fluid tank,
([1) means resiliently mounting said tank on said side members,
(c) a post vertically and swingably mounted on said frame,
(:1) an arm pivotally mounted on the post,
(e) a seat on the outer end of said arm,
(f) means for swinging said seat transversely of the vehicle and for raising and lowering the same,
(g) valve means carried by said seat,
(h) a line connecting said valve means and said tank,
a mixing chamber in said line from said tank,
(1') a pump carried by sai frame and having a line connected to the mixing chamber,
(j) and a brush havim a line connected to said pump, whereby upon operation of said valve means and pump fluid may be drawn from said tank and supplied to said brush.
2. The apparatus of claim 1 wherein said resilient mounting of the tank includes at least one cross plate having ends mounted on the side members, elongated resilient members secured to the respective ends of said cross plates, elongated channel members engaging over the resilient members, and means resiliently securing said cross plates to said side members.
3. The apparatus of claim 2 wherein said cross plate includes a metal ring member at substantially the center thereof, a neoprene ring surrounding said metal ring and bonded thereto and with its upper portion extending above said metal ring.
4. The apparatus of claim 1 including means between said tank and said pump for heating said fluid.
5. A washing unit carried by a vehicle having a frame and side members comprising,
(a) a main fluid tank,
([1) means resiliently mounting said main tank on said side members,
(c) auxiliary fluid tanks carried by said main tank,
(d) a post vertically and swingably mounted on said frame at the rear of said maintank,
(e) an arm pivotally mounted on the upper end of said post, 7
(f) a seat on the outer end of said arm,
(g) means connected to said seat and said post to maintain said seat in vertical position,
(12) means for swinging said seat trwsversely of the vehicle and for raising and lowering the same,
(i) valve control means carried by said seat,
upper end of said (j) lines connecting said valve means and said main and auxiliary tanks,
(1:) a mixing chamber in the line leading from the main tank and havin connection with the auxiliary tanks,
(I) a pump carried by said frame and connected to the line having the mixing chamber,
(in) a brush having a line connected to said pump,
(it) and valve means in the lines connecting the auxiliary tanks and the mixing chamber and controlled by said valve control means whereby fluid may be selectively drawn from said main and auxiliary tanks and supplied to said brush.
6. The apparatus of claim 5 wherein said valve means in said lines include solenoid valves.
7. The apparatus of claim 5' wherein the means to maintain said seat in vertical position consists of a link having one end pivotally connected to said bucket at a'point spaced below the connection of the bucket to said arm and the other end of the link is pivotally connected to said post at a point spaced below the connection of the arm to said post. a
8. The apparatus of claim-5 including means for heating said fluid from the main tank before it reaches said pump.
9. A washing unit carried by a vehicle having a frame and side members comprising.
(a) a main fluid tank,
(12) means resiliently mounting said main tank on said side members,
(c) auxiliary fluid tanks mounted above and carried by said main tank,
(at) a post swingably mounted on said frame,
(e) an arm pivotally mounted on said post,
( a seat on the outer end of said arm including a panel member,
(g) means connected to said seat and said post to maintain said seat in vertical position,
(h) hydraulic means for swinging said seat transversely of the vehicle and for raising and lowering the same,
(i) valve control means carried by said panel member,
(j) lines connecting said valve means and said main and auxiliary tanks,
(k) a mixing chamber in the line leading from the main tank and having connection with the auxiliary tanks,
(1) a pump carried by said frame and connected to the line having the mixing chamber,
(In) a brush having a line connected to said pump,
(it) needle valves in the lines connecting the auxiliary tanks and the mixing chamber,
(o) solenoid valves operated by said valve control means in the lines leading from the auxiliary tanks between said needle valves and said mixing chamber whereby fluid may be selectively drawn from said main and auxiliary tanks and supplied to said mixing chamber and to said brush.
10. In a mobile washing unit including a tank having a bottom mounted on a vehicle having a frame provided with spaced longitudinal side members having U-shaped brackets secured thereto and facing each other, a resilient mounting for said tank comprising,
(a) spaced cross plates,
(b) means including an angle member securing the ends of the cross plates to the upper arm of said U-shaped brackets,
(c) elongated resilient members bonded to the upper faces of the ends of said plates, v
(d) channel members embracing said resilient members, upon which the bottom of said tank rests, said channel members having threaded bores for receiving the threaded ends of stud bolts, said ends of the cross plates and said angle members having openings through which said bolts extend,
(e) resilient collars onsaid bolts,
(f) and nuts for said bolts for resiliently securing said channel members to said side members,
(g) said openings in said cross plate and said angle members being larger than said stud bolts to provide for transverse and longitudinal movement of said 5 tank.
11. The apparatus of claim 10 including resilient means secured to the center of said cross plates and engaging the bottom of said tank to provide additional resiliency to said mounting.
References Cited by the Examiner UNITED STATES PATENTS 1,727,609 9/29 Kramer 2805 X 2,787,278 4/57 Mitchell 182--l4 X 2,973,112 2/61 Young 21483.1
CHARLES A. WILLMUTH, Primary Examiner.