US2523084A

US2523084A - Gun type garden sprayer

Info

Publication number: US2523084A
Application number: US626369A
Authority: US
Inventors: Adragna Philip
Original assignee: Individual
Current assignee: Individual
Priority date: 1945-11-02
Filing date: 1945-11-02
Publication date: 1950-09-19
Anticipated expiration: 1967-09-19

Description

p 19, R5 0 P. ADRAGNA 2,523,084

GUN TYPE GARDEN SPRAYER Filgd Nov. 2, 1945 INVENTOR PHILIP ADRAGNA ATTORNEY Patented Sept. 19, 1950 UNITED STATES PATENT OFFICE GUN TYPEGARDEN SPRAYER Philip Adragna, Brooklyn, N. Y. Application November 2, 1945, Serial No. 626,369

soft spray so as not to harm the flowers or their roots. In addition, when using dangerous or poisonous chemical sprays, it is often essential that a limited] amount of chemical be used and that the spray be fine to give good coverage and easily controlled to cover the desired locations to be sprayed.

Therefore, it is an object of my invention to construct a spray gun which will be easy to operate and control, and which will provide a fine or heavy spray as desired. 7

Another object is to construct a spray gun with a pistol grip which can be operated by squeezing the handle of the gun.

A further object is to provide a spray gun which can be looked in an open position to give any desired strength of spray, or controlled byhand for intermittent operation.

Another object is to provide a sturdy, simple and easily assembled spray gun which has a delicate and responsive valve.

I accomplish these and other objects by constructing my gun with a barrel formed of a series of separate, threaded tube elements and positioning a valve with a plurality of bearings inside the barrelfand a control for the valve on the handle of the gun.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth. In the accompanying drawings forming a material part of the present disclosure:

Fig. 1 is a vertical section through the center of the spray gun constructed in accordance with the present invention.

Fig. 2 is a perspective view of the valve stem, a valve stem bearing and the spray control at the head of the valve stem.

v Fig. 3 is a perspective view of a cap and spray control seat positioned at the head of the gun.

Fig. 4 is a plan view partly in section showing a variation of the head end of the spray gun."

In the drawing and in the specifications, in which like numerals indicate identical elements, my spray gun shown in Figs. 1 to 3 inclusive is formed with a barrel 2|, a tubular handle 22 3 Claims. (01. 299-1s1 2 extending downward from the barrel in the vicinity of its rear end 23.

The tubular handle at its lower end 24 is provided with a female thread 25 into which is threaded a male end 26 of a coupling 21. The coupling is provided on its outside with two extending circular rings or flanges 28, and on its inside with female threads 29 for joining the spray gun to a hose. In addition the handle is provided at the forward part of its lower end 24 with a lug or ear 3|] and at the forward part of its upper end with a threaded opening 3|. A bushing 32 threaded into theopening 3| slidably carries a rod 33, whose threaded end 34 extends.

into the handle below and in the vicinity of an opening 35 between the barrel and handle. The outer end 36 of the rod is provided with a reduced neck 31 and head 38.

A trigger 39, which is located in front of the handle, is pivotally held thereto by a pin 40 whichextends through the lug 30 and ears 4| formed at the lower end of the trigger. Adjacent and below the ears 4|, a screw 42 having a fixedly mounted knurled flange 43 is threaded at one end into an opening 44 in the trigger, the other end 45 of the screw is pointed and rests against the handle, intermediate the rings 28. The upper end of the trigger is provided with a shoul-v dered slot 46 (see Fig. 10) into which the head 38 0f the rod 33 extends.

A rod or arm 41 is located partly in the barrel 2| and partly in the upper end of the handle and has its lower end48 threaded to the end 34 of the rod 33, and is spring tensioned by a coiled spring 49, its upper end 50 being threaded to a The spring 49 is secured by a valve stem 5|. pin 49* to the rear of the handle.

The trigger functions by being squeezed toward the handle, or by allowing the spring 49 to force the trigger forward until the pointed end 45 of the screw 42 rests against the end of the handle. When the trigger is squeezed, the

The barrel 2| is formed of a series of tubes threaded together, a tube 52 being rearmost and containing the handle, an intermediate tube 53 is threaded into the tube 52, and a head tube 54 is threaded over the intermediate tube. The

rear end of the tube 52 on its outside is provided with a flange 55, and on it inside, adjacent the rear of the handle, with a bearing seat 56. In addition the tube 52 is provided with a valve seat 51.

The head tube 54 is provided at its forward end with a male thread 58 and an inward extending flange 59. A cap 60 is threaded over the threads 58 and is provided with an inward extending flange 6i forming a smaller opening than the openingformed by the flange 59 and also with a forward extending lip 62.

The valve stem which rests in the center-of the barrel 2| and extends from the. rear .tuheBZ well into the head tube 54, is provided at its rear end with a bearing section 63 which rests-inJthe bearing seat 56.

A Valve 64 is so positioned "on the valvestem that it rests on the valve seat 5'! when the trigger is tightly squeezed against the handle 22. The valvemay be provided witha packing ring 65 if desired. Between the valve .64 and the bearing section 63 a threaded part 661s located which/coa'cts. with thethreaded part. 56 of the arm 47.

.A hearing 61 fits tightly in the tube 53 and slidably supports the valve stem .5 I. The bearing 61. is provided withpassageslBS permitting the liquid or water to. pass through the barrel. A flanged bearing 69, is secured to the. valve stem withinthe'tube. 54 and is provided with passages similar to the passages 68. -Between the bearing" 61.: and the bearing 6.9; a coiled spring H encirclesLthe valve stem. f'Thevalve stem at its .head end 12 i provided with'anenlarged'conical pointed .tip l3 and, .to the rearof the-tip, witha washer 74 in :the'form ofa truncated cone, the rear "face of .the washer 14 being largerthan'the front-face.

I When valve 64 is open, during any partial rearwardpivoting'of the trigger '39, the water forces.

its "way forward under pressure and passes through the passages. 6.8 and Hi. The cone head 1'3of the'valve stem as a result of this'movement becomesfaligned slightl to the rear of the opening-formed by the flanges '59 and 6!, partly opening-fit,--and-causing the water to flow from the gun' head'in' the form of a spray.

When the'valve 64, which is in themiddle-of the spray gun, is almost closed, then the pressure ofthewaterin the 'front chamber is reduced-to almost zero and the water *will' discharge past the frontvailve with very little force. Therefore, that discharging water, in 'thatposition- 0f the valve 64. maybe used for'wate'ring the roots of plants or newtender plants which would-be damaged by water underanyappreciable amount of pressure. "In order te-permit aneasy manipulation of the gun the handle is-bentbackwards atits lower end by -the' curved section 15; and to'aid in obtaining a 'ple'asing configuration for 'the barrel, the tube '52 -is narrowed towardsits head.

'=-Althou'gh the -tip or head '66 is shown threaded to 'the tube-54, it can be=integral therewith.

ilnthe-variation'shown ind ig; 4;the tube 54 is provided with an enlarged 's'howeror spray head 16 having a fenfale threaded opening Tl, that coacts' with the male threaded end 58 of the tube 54',"the sprayhead' -16 is alsoprovided with spray holes 18 through whichthe liquid is discharged.

It "is evident. fronr-the foregoing description, that the setting of the screw 42 controls the amount "of opening of the valve 64 and the volume of: liquid sprayed when the'trigger is not being squeezed. In addition; it is plain thatif the screw isin.a'retracted. position and the trigger is recclaim as new, and desire to secure by United States Letters Patent is:

1. "In a spray gun having a tubular barrel l-formedwithra valve seat at one end thereof and valvemember normally engaging the valve seat andaitubular handle depending from the tubular barrel, means for urging the valve stem in a direction to unseat the valve member. from the valve seat, comprisinga trigger extended-vertically along the front. of the tubularhandle and spaced slightly therefrom, means pivotally. supporting. said trigger element adjacent its lower endon the tubular handle,v a vertical arm connected at its upper .end to the valve stem and having. its lowerend. depended .into the top of thetubular handle, a resilient member urging said vertical arm in a direction to assist the spring pressed valve stem in retaining .the valve member in position on its valve seat, a rod slidably extended through the wall of the. tubular handle and'ha-vingits inner end attached to the bottom end of saidarm and its outer end attachedto the top end of saidtrigger, and means for holding said trigger in a pivoted position in which said rodwillbe pushed inward to urge the valve stemto a'position in which'the valve member will be unseated from the valve seat.

2.Ina spraygun having a tubular barrel formed with a valve seat at one end thereof and enclosing a spring pressed valve stem having a valve member normally engaging the valve seat anda tubular handle depending from the'tubular barrel, means for urging the valve stem in a direction to unseat the valve 'member from the valve seatycomprising a'trigger extended vertically along the 'front of the tubular handl and spaced slightly therefrom, means pivotally supporting said trigger element adjacent its lower end on the'tubular handle, a verticalarm connected at its .upper end to the valve stem and having its lower end depended into. the top -,of thetubular handle. a resilient, member urging said vertical arm in .a direction ,to assist the spring pressed .valve stem in retaining ,the valve member. in. positionon its valveseat, .a -rodslidably extended. through vthe wall of theutubular handle andhaving itsinner end attached .to the bottom end ofsaid armand its outer end attached to-lthe. top. end ofssaid trigger, and ,means vfor holding said trigger in a pivoted-position in which said rodwill bepushed inward tourge the valve stem-tea position in which .the valve .-.member will be unseated from the valveseat, said holding .means comprising, ascrew extended ibetween thelower end. of.-said trigger. beneath it pivotal: supporting. meansand .the .lower end of. the

"tubular barrel, said screw .havinglits outerend threaded through 'the.lower .end of said trigger and its inner end. bearing against the .lower end of the tubular .handle, a and. a knurled. flange formed on.said. screw intermediate, of its ends by which said screw may be rotated in one directionor the other.

3. In a spray gun having a tubular barrel formed with a valve seat at one end thereof and enclosing a spring pressed valve stem having a valve member normally engaging the valve seat and a tubular handle depending from. the tubular barrel, means for urging the valve stem in a direction to unseat the valve member from the valve seat, comprising a trigger extended vertically along the front of the tubular handle and spaced slightly therefrom, means pivotally supporting said trigger element adjacent its lower end on the tubular handle, a vertical arm connected at its upper end to the valve stem and having its lower end depended into th top of the tubular handle, a resilient member urging said vertical arm in the direction to assist the spring pressed valve stem in retaining the valve member in position on its valve seat, a rod slidably extended through the wall of the tubular handle and having its inner end attached to the bottom end of said arm and its outer end attached to the top end of said trigger, and means 'for holding said trigger in a pivoted position in which said rod will be pushed inward to urge the valve stem to a position in which the valve member will be unseated from the valve seat, said holding means comprising a member supported at one end on said trigger beneath its pivotal supporting means and being movable relative thereto and having its other end engaging said handle for pivoting said trigger when said member is moved relative to said trigger.

PHILIP ADRAGNA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS