US3320895A - Spraying apparatus with pump and motor adjustment - Google Patents

Description

y 1967 R. A. PETERSON ETAL 3,320,895

SPRAYING APPARATUS WITH PUMP AND MOTOR ADJUSTMENT 2 Sheets-Sheet 1 Filed Jan. 14, 1965 INVENTOR on m R n %m K E W0 N .u R m m D Rm T A A n RY B? May 23,

R- A. PETERSON ETAL SPRAYING APPARATUS WITH PUMP AND MOTOR ADJUSTMENT Filed Jan 14, 1965 2 Sheets-Sheet 2 RICHARD A. PETERSON BY and GARLAND R.

PETERSON ATTORNEYS United States Patent 3,320,895 SPRAYING APPARATUS WITH PUMP AND MOTOR ADJUSTMENT Richard A. Peterson and Garland R. Peterson, both of 3316 Denver, Muskogee, Okla. 74401 Filed Jan. 14, 1965, Ser. No. 425,477 2 Claims. (Cl. 103-57) This invention relates to spraying apparatus and more particularly to versatile high pressure portable spraying apparatus of simplified construction.

The principal objects of the present invention are: to provide spraying apparatus which is easily transported from place to place and highly adaptable for various jobs; to provide such apparatus which includes a positive displacement pump for producing the high pressures, desirable to spray fence rows, trees, cattle and the like but is easily adjustable to lower pressure operation; to provide such apparatus which may selectively spray liquids contained in a tank forming part of the apparatus or spray liquids obtained directly from a pond or the like through use of an auxiliary suction hose; to provide such apparatus wherein an auxiliary suction hose may be alternately or simultaneously used for spraying and filling the storage tank forming a portion of the apparatus; to provide such apparatus wherein relatively constant pressure is provided at the spray nozzle under varying nozzle flow rates; to provide such apparatus wherein pump output in excess of nozzle how is automatically returned or directed to the storage tank whereupon the contents of the tank are maintained in constant agitation; to provide such a device using a small internal combustion engine for driving the pump and wherein the engine is easily disengaged from the pump when desired by displacing a simple control lever; to provide such apparatus wherein the internal combustion engine may be started without load and the pump disengaged when not needed; to provide such apparatus having an auxiliary suction line connection which may be conveniently used to direct oil into the pump for storage purposes; and to provide such apparatus which is simple in construction and yet highly rugged in use.

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 spraying apparatus embodying this invention and showing an auxiliary suction line for connection thereto.

FIG. 2 is a fragmentary end elevation of the apparatus showing the internal combustion engine in pump driving position.

FIG. 3 is a fragmentary end elevation showing the internal combustion engine displaced toward the pump in non-driving position.

FIG. 4 is a fragmentary side elevation of the apparatus with portions broken away showing liquid by-passed into the tank.

Referring to the drawings in more detail:

The reference numeral 1 generally indicates portable high pressure spray apparatus embodying this invention. The apparatus 1 comprises an elongated rigid angle iron frame 2, a storage tank 3 and a positive displacement pump '4, preferably of the gear lobe type. The tank 3 is secured to the frame 2 by means of suitable straps 5 welded respectively at one end to the frame at 6 and terminating at the other end in a threaded stud 7. The studs 7 extend above the upper wall 8 of the tank 3 and a bar 9 receives the studs whereupon nuts 10 are threaded thereonto for rigidly anchoring the tank 3 with respect to the frame. A bung 11 is provided in the upper wall 3,320,895 Patented May 23, 1967 8 of the tank 3 for filling the tank by any conventional means is desired. Suitable handles 12 are fixed to the sides of the frame 2 in spaced apart relation for manually carrying the apparatus 1 from place to place when necessary.

The frame 2 includes longitudinally extending spaced apart parallel side angles 16 having lower legs 14 extending toward each other and upper legs 15 extending upwardly for receiving the straps 5 and handles 12.. Transversely extending spaced apart angles 16 and 17 are secured at opposite ends thereof to opposite ends of the longitudinal angles 13 producing a rectangular structure. However, the angle 17 has the outer leg 18 thereof facing upwardly to form a pocket with the angles13 and 14 for receiving the tank 3 and the opposite transverse angle 16 has the outer leg 19 thereof facing downwardly for reasons apparent hereinafter. A transverse angle 28 is secured at opposite ends thereof to and intermediate the ends of the longitudinal angles 13 and 14 and extends parallel to the transverse angle 16. The upper leg 21 of the angle points toward the angle 16 and the lower leg 22 extends downwardly parallel to the leg 19 of the angle 16.

Angles 23 and 24 are respectively secured, preferably by welding, to the angles 16 and 20 and have horizontal upper legs 25 and 26 extending toward each other and spaced slightly above the horizontal upper leg 27 of the angle 16 and the horizontal upper leg 21 of the angle 20. The pair of angles 23 and 16 and the pair of angles 24 and 20, respectively, form guide means or grooves 28 and 29 opening toward the opposite pair of angles. A mounting plate 30 has opposite side edge portions 31 and .32 engaged in the respective grooves 28 and 29 for sliding transversely of the frame 2. A portable internal combustion engine 33 is suitably fixed to the plate 30 and has an output pulley 34 aligned. with and spaced laterally from the input pulley 35 of the pump 4.

The pump 4 is rigidly mounted on the frame 2 by means of a brace 36 suitably fixed to the angle 24. A pulley guard 37 partially surrounds the: pump pulley 35 and is maintained in position by brackets 38 also secured to the angle 24. A flexible power transmission belt 39 is engaged with the pulleys 34 and 35 for selectively transmitting motion therebetween.

A pair of bearing members 44} and 41 are coaxially aligned longitudinally of the frame 2 and are secured by mounting on the angles 16 and 2%, respectively, adjacent one end of the grooves 28 and 29. An axle member 42 is rotatably mounted at opposite ends thereof in the bearing members and 41 and has a pair of parallel spaced apart radially extending lever arms 43 and 44 fixed thereto. A pair of anchor members 45 and 46 are fixed to the plate 30 and are respectively aligned with the lever arms 43 and 44. A pair of elongated rigid links 47 and 48 are pivotally connected at opposite ends thereof to the respective aligned anchor members and lever arms whereby rotation of the axle member 42 produces movement of the plate 30 thereby varying the distance between the pulleys 34 and 35 resulting in a loosening or tightening of the belt 39. The links 47 and 48 include internally threaded sockets 49 and threaded rods 50 engaging in the respective sockets for adjusting the distance between the ends thereof so as to compensate for variations in the length of the belt 39.

An elongated stop member 51 extends between the angles 16 and 2t and is positioned to engage the lever arms 43 and 44 to prevent further rotation of the axle member 42 in one direction beyond a few degrees past the point of maximum separation between the mounting plate and the axle member. Thus a toggle is formed whereby the plate 31 is locked against motion toward the axle member 42 until the axle member is rotated past top 3 dead center in the opposite direction. A lever member 51' is fixed to the axle member 42 and extends radially therefrom for selectively rotating the axle member into and out of the locked position.

The pump 4 has an inlet port 52 and an outlet port 53. A suction filter 54 is located in the storage tank 3 and resting on the bottom wall 55 thereof. An elongated suction tube 56 extends through a side wall 57 of the tank 3 and communicates at one end thereof with the filter 54 and at the other end thereof with the inlet port 52 of the pump 4. The suction tube 56 has an intermediate portion 58 including a normally sealed intake connector 59 for selectively attaching to an auxiliary suction line 68. A valve 61 in the suction tube 56 between the connector 59 and the filter 54 may be closed to selectively prevent intake into the line 56 from the tank 3.

A spray nozzle member 62 has a trigger mechanism 63 for selectively controlling the flow therethrough. An outlet tube 64 is connected between the pump outlet port 53 and the spray nozzle member 62. A by-pass connector 65 communicates into the outlet tube 64 and has a pressure sensitive by-pass valve 66 adapted to open above a predetermined pressure to maintain a selected pressure in the outlet tube 64 during pump operation. A by-pass tube 67 is connected between the valve 66 and the tank 3 through the wall 57 for re-circulating liquid passing through the valve. The tube 67 opens through the wall 57 well above the bottom wall 55 so as to produce maximum agitation in the tank with the by-passed liquid.

In operation, the apparatus 1 may be transported to the desired site in a truck or the like and easily handled, if necessary, by the handles 12. In order to spray insecticides or the like, the proper liquids may be poured into the tank 3 through the bung 11. The mounting plate 30 is displaced toward the axle member 42 by rotating the lever member 51 clockwise to the position illustrated in FIG. 3 whereupon the belt 39 is slack. In this position the engine can be started without load. When the spray nozzle member is ready for spraying, the lever member 51' is rotated counterclockwise to the position illustrated in FIG. 2 which tightens the belt 39 so as to drive the pulley 35 from the engine pulley 34. The valve 61 is opened and the liquid in the tank 3 is pulled or sucked into the pump 4 and discharged into the outlet tube 64. When a predetermined pressure is reached in the outlet tube 64, the by-pass valve 66 opens and the liquid returns to the tank through the by-pass tubes 67. Upon pressing the trigger mechanism 63, a large portion of the output of the pump 4 is discharged through the spray nozzle member 62. However, it is usually desirable to maintain the output of the pump 4 above that which can be discharged through spray nozzle member 62 so that a substantially constant pressure is always maintained in the outlet tube 64 and also so that there will always be some circulating flow in the tank 3 to maintain the contents under constant agitation. A suitable adjusting screw member 68 is provided on the by-pa-ss valve 66 by which the discharge pressure in the outlet tube 64 can be easily regulated. If desired, an additional outlet tube (not shown) may be branched from the outlet tube 64 whereupon spraying from separate points may be simultaneously accomplished so long as maximum output capacity of the pump 4 is not exceeded.

It is sometimes desirable to use a pond or other reservoir as a direct source of the liquid being sprayed rather than the tank 3. Under these circumstances, the auxiliary suction line 60 is connected to the intake connection at 59, for example, by a quick disconnect coupler 69 and the valve 61 is closed whereupon all intake to the pump 4 enters through the line 60 instead of the tank 3. By-pass flow will enter into the tank 3. It is noted that this also presents a convenient method of filling the tank 3, that is, by preventing flow through the outlet tube 64, all flow from the line 60 is by-passed into the tank. It may be desirable to leave the valve 61 partially or wholly open with the auxiliary suction line 60 connected whereupon intake to the pump may enter from either the tank or the line 60. Further, if desired, the tank 3 may be emptied by opening the valve 61, stopping the pump 4 and lowering the free end (not shown) of the line 60 whereupon flow will reverse and discharge through the line 60. The connection at 59 also provides a convenient access into the pump to insert oil or other protective fluid for apparatus storage.

It is to be understood that although one form of this invention has been illustrated and described, 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 we claim and desire to secure by Letters Patent is:

1. In portable pressure spray apparatus:

(a) a frame and a pump, means securing said pump to said frame, said pump having a driving pulley,

(b) said frame including structure forming guide means, a mounting member engaged with said guide means for moving with respect to said frame, a prime mover fixed to said mounting member and having an output pulley transversely aligned with and spaced from said pump pulley, a flexible power transmission belt engaging said pulley,

(0) means mounted between said mounting member and said frame for selectively moving said mounting member to produce movement of said pulleys toward and away from each other resulting in a loosening and tightening respectively of said belt on said pulleys,

(d) said means for moving said mounting member including a pair of coaxially aligned bearing members extending longitudinally of said frame and secured to said frame in spaced apart relation respectively adjacent said guide means,

(e) an axle member rotatably mounted at opposite ends thereof in said bearing members and having a pair of parallel spaced apart radially extending ing lever arms fixed thereto, means for rotating said axle member,

(f) a pair of anchor members fixed to said mounting member and respectively aligned with said lever arms, a pair of elongated rigid links pivotally connected at opposite ends thereof to said respective aligned anchor members and lever arms whereby rotation of said axle member produces movement of said mounting member, and

(g) a stop member secured to said frame and positioned to engage said lever arms to prevent further rotation of said axle member in one direction beyond a few degrees past the point of maximum separation between said plate and said axle member.

2. The structure as set forth in claim 1 wherein:

(a) said rigid links include internally threaded sockets and threaded rods engaging in said sockets for adjusting the distance between the ends thereof.

References Cited by the Examiner UNITED STATES PATENTS 2,123,156 7/1938 Jagoe 239-172 2,329,728 9/1943 Samiran 222-376 X 2,415,820 2/ 1947 Herring 248-23 2,590,817 3/1952 Fenno 222-333 2,719,754 10/1955 Weller 222-178 2,740,664 4/1956 Yates 239-172 2,980,295 4/1961 Sacco 222-1445 3,082,917 3/1963 Anderson et al 222-376 X ROBERT B. REEVES, Primary Examiner.

HADD S. LANE, Examiner.

Claims (1)

1. IN PORTABLE PRESSURE SPRAY APPARATUS: (A) A FRAME AND A PUMP, MEANS SECURING SAID PUMP TO SAID FRAME, SAID PUMP HAVING A DRIVING PULLEY, (B) SAID FRAME INCLDING STRUCTURE FORMING GUIDE MEANS, A MOUNTING MEMBER ENGAGED WITH SAID GUIDE MEANS FOR MOVING WITH RESPECT TO SAID FRAME, A PRIME MOVER FIXED TO SAID MOUNTING MEMBER AND HAVING AN OUTPUT PULLEY TRANSVERSELY ALIGNED WITH AND SPACED FROM SAID PUMP PULLEY, A FLEXIBLE POWER TRANSMISSION BELT ENGAGING SAID PULLEY, (C) MEANS MOUNTED BETWEEN SAID MOUNTING MEMBER AND SAID FRAME FOR SELECTIVELY MOVING SAID MOUNTING MEMBER TO PRODUCE MOVEMENT OF SAID PULLEYS TOWARD AND AWAY FROM EACH OTHER RESULTING IN A LOOSENIGN AND TIGHTENING RESPECTIVELY OF SAID BELT ON SAID PULLEYS, (D) SAID MEANS FOR MOVING SAID MOUNTING MEMBER INCLUDING A PAIR OF COAXIALLY ALIGNED BEARING MEMBERS EXTENDING LONGITUDINALLY OF SAID FRAME AND SECURED TO SAID FRAME IN SPACED APART RELATION RESPECTIVELY ADJACENT SAID GUIDE MEANS, (E) AN AXLE MEMBER ROTATABLY MOUNTED AT OPPOSITE ENDS THEREOF IN SAID BEARING MEMBERS AND HAVING A PAIR OF PARALLEL SPACED APART RADIALLY EXTENDING ING LEVER ARMS FIXED THERETO, MEANS FOR ROTATING SAID AXLE MEMBER, (F) A PAIR OF ANCHOR MEMBERS FIXED TO SAID MOUNTING MEMBER AND RESPECTIVELY ALIGNED WITH SAID LEVER ARMS, A PAIR OF ELONGATED RIGID LINKS PIVOTALLY CONNECTED AT OPPOSITE ENDS THEREOF TO SAID RESPECTIVE ALIGNED ANCHOR MEMBERS AND LEVER ARMS WHEREBY ROTATION OF SAID AXLE MEMBER PRODUCES MOVEMENT OF SAID MOUNTING MEMBER, AND (G) A STOP MEMBER SECURED TO SAID FRAME AND POSITIONED TO ENGAGE SAID LEVER ARMS TO PREVENT FURTHER ROTATION OF SAID AXLE MEMBER IN ONE DIRECTION BEYOND A FEW DEGREES PAST THE POINT OF MAXIMUM SEPARATION BETWEEN SAID PLATE AND SAID AXLE MEMBER.

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