US1671779A

US1671779A - Spraying device

Info

Publication number: US1671779A
Application number: US562838A
Authority: US
Inventors: George T Pearsons
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-05-22
Filing date: 1922-05-22
Publication date: 1928-05-29
Anticipated expiration: 1945-05-29

Description

2 Sheets-Sheet 2 v w w 95 on W fl .w 1

INVENTOR. G'e aye 7.123% 502.5 BY

ATT NEYS.

May 29, 1928.

G. T. PEARSONS SPRAYING DEVICE Filed May 22, 1922 Patented May 29, 1928.

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Application filed my 22, 92 rm n we,

This invention relates; to liquid spraying devices to be utilized as means for spraying trees, shrubhery and the like with an insecticide, and which may also be utilized as a fire extinguisher, and it is. the object of the invention to provide a portable device of this character in which liquid carriedi a i container is adapted to he placed under cornpression and forcibly ejected therefrom by means within the container normally inactive and which is constructed and arranged to be released when desired.

A further object of. the inve tion to provide a deviceof this character inwhioh the means to place the liquid-under cornpression comprises spring actuated piston mechanism including a chamber with which the discharge outlet of th a ner ommunicates, said piston m c an sm i g arranged to be moyed t0; and retained in position with its actuating spring contracted, means being provided to seal" the.

interior of the container E911 @11 1 0. phere when the piston mechanism is in position with its actuating spring 01 tractedl Other objects and advantages will hereinafter appear. I

In the drawings accompanying and, forming apart of this specification Figure l is a longitudinal sectional View of a spraying apparatus illustrating an embodiment of my invention, the device being loaded and the means for placing the liquid under compression being shown in its nact ve condition.

Figure 2 is a View similiar to Figure l,'

Figure 4 is a longitudinal sectional view of the structure shown in Fi re .3, but Show ing the parts in position wit the means for placing the liquid under compression re leased and the liquid discharged from the container.

Similiar characters of reference designa like parts throughout the d'ifierent Views of the drawings.

communication with t 9 12 1 1 1 Positi n th the spr In carrying out the embodiment of the invent-ion'shown in Figures 1 and 2, I rovlde a container comprisin a tubular body p rt n 7 h ving n 8 an. 9 u he e'- to. A plunger or piston 10 arranged with suitable packing is slidably mounted in the container andse arates the container in two hambe s, the amb r t on id o th piston constituting a liquid carrying chamer, as at 11, while a spring 12 is mounted piston todrive or actuate t e piston to place the. liquid in the chamber 11 under press on.

A casing 13 has screw threaded connection at one end with a bow on the iston, as shown at 14, to pro'ect. into tlie spring carrying chamber of t e container, the opposite end of the casing being closed by a s p 5 o P vi a. hamb r hi may b n the nature of a compression chamber in liq d ryin chamber 11 through ports 16 in the iston and into which casin chamber the liquid is. discharged when tiie liquid in chamber ll'is placed under compression by the iston through the influence of the spring 1g,

T qu i ehe g 0 the exteri of the. container thnough a nozzle 17 in communication with the chamber 13 through a t e 1 s d in nd en tu in a con,- tinuation of the nozzle orifice, said to ing through a perforation in the flanged bushing 19 secured in and extendin through an pening in e o tain en 8 an pack ng 0 carr d y anged m mber a ta h d t the us ing 19 a d tub als t nd ng ro gh a tu ng ox 2 n th end of the casing 13 into the chamber in said casing.

Thespring 12 is confined between the conm n e 8 and an annu ar flanged m m e 23 secured to the casing 13. To place the spring under tension or to contract the same an opening is arranged in the container end 9 having a flanged tubular member or sleeve 24 s cured h re n o e passage f m n such as a r i ngag t pis on med a nismi, Th slee q2t also serves a th i le op ning tor the hqnid a mg h mbe .1 and 15 cl sed by a @1 2 awns th e ded onnec ion w th Po on of the sl eve si tend ng. ey nd he a d 9. To e ur h ename e an abutm n 2 is arrange on t e d scharg n he hamb a h op posits side of th a tube 18 to extend diametrically opposite from the tube, which abut-ment is adapted to pass through opposite slots 26 in the Wall of an opening in the end of a casing 27 mounted axially in the piston or plunger and which abutment is adapted to engage within said casing at opposite sides of the opening therein, as shown in Figure 1.

To prevent leakage and evaporation of the liquid through the outlet tube 18 a spring influenced closure 28 is arranged in the easing 27 to engage the end of the tube, the tube being releasably retained in position with the closure in engagement therewith by lugs 28 extending oppositely from the nozzle, which are adapted to pass through notches in a flanged member 29 of angular shape in cross section arranged at the outer side of the end 8 of the container and to engage below the flange of said member by giving the nozzle a slight rotary movement, which movement of the nozzle is facilitated by portions 30 projecting laterally therefrom to form a hand-grip. This rotary movement of the nozzle also serves to cause the tube abutment 26 to engage at the inner side of the wall of the opening in the casing 27.

In this position of the parts the chamber 11 may be supplied with the liquid to be ejected from the container through the sleeve olpening 24, such liquid also passing through t e piston ort 16 into the chamber of casing 13. A ter the liquid carrying and piston chambers 11 and 13 have been filled with liquid the closure cap 25 is secured in place when the'device is in condition for operation. To use the device the nozzle is .given a partial rotation to free thenozzle lugs 28 from the locking flange 29, this movement positioning the abutment 26 on the discharge tube 18 to permit the same to pass through the opening in the casing 27 by a longitudinal movement of the nozzle freeing the end of the tube from the closure 28. The outward movement of the nozzle is limited by a stop member 31 on the tube engaging the flanged member 21. The opening in the bushing 19 through which the tube passes is of greater diameter than the tube leaving a space between the tube and the wall of the inlet opening, this space being sealed in the normal inoperative position of the parts shownin Figure 1 b a disk of sealing ma terial 32, such as cor seated in the bottom of a recess in the nozzle, and by an annular sealing member 33, which may also be cork, engaging about the wall of said nozzle recess and retained therein by serrating the surface of the side wall of said recess, said annular sealing member being adapted to engage about the bushing 19. The space between thedischarge tube and wall of the bushing opening is connected to the spring carrying chamber of the container t rough perforations in a disk 34 in the packing member 21, said disk having the peripheral wall arranged of concave shape to provide a space between the periphery of said disk and the side wall ofthe flange of the member 21 with which ports 35 in the flange of the member 21 communicate, whereby the spring carrying chamber of the container is open to the atmosphere during the discharge of the liquid from the container to permit of entrance of'air' into such chamber to displace the liquid discharged from the container and prevent the creating of a vacuum which may have a tendency to retard the movement of the piston. By the provision of the casing chamber 13 there will be a supply of liquid at the entrance end of the discharge tube 18 whereby the discharge of the liquid may be effected inwhatever position the container may be held.

A drain plug 80 is provided for removing any liquid which may leak by the piston. This plug also serves to permit air to enter the spring chamber and for this purpose a perforate cap 81 is threaded on the outer end of the plug. The perforation in the cap is closed by valve 82 positioned in the tubular portion of the plug and normally urged by a spring83 to engage a seat arranged about the inner end of the cap perforation.

The structure shown in Figures 3 and 4 is the same as that shown in Figures 1 and 2 with the exception that the piston mechanism has a tubularmember-37 secured at one end to the side of thepiston opposite to the casing 13 and slidably engages in the stutting box 38 secured in an opening in one end of the container, which tubular member is projected from the container as the piston mechanism is actuated by the spring to dis-.

char e the liquid from the container. This mem er 37 also serves as 'a meansto move the piston to position to contract the piston actuating spring 12", and the piston is retained in such position by locking lugs 38' extending laterally from an annular flanged member 39 secured to the outer end of the member 37 assing through notches in a flanged mem er 41 arranged on the end of the container and caused to engage below the flange of said member. The flanged menr ber 39 has a portion 4.0 to engage in the tubular member 37 to position the same relative to such tubular member. By the arrangement of the flanged member 39 as described there is provided an annular recess 42 the member 39 being in the nature of a cap to engage the outer end of the stuffing box with a disk 43 seated in the recess portion of cap to seal the stuffing box. To seal the outlet tube during the inactive condition of the device to prevent leakage and evaporation of theliquid in the container/through said outlet tube a spring influenced valve 45 is carried in a recess of a in 46 fi xed in the tubular member 37 an with which valve the and in communication with the container through a tube 48 passing through the valve plug and communicating with a port49 through the piston. When the piston mechanism is in spring contracting position the air inlet port 44 is sealed by the stufiing box 38, as shown in Figure 3. The tubular member 37 mayalso have a port 50 for the flow of the liquid in the chamber of the casing 13*" through'thepiston port 47. v

To set the device in operation all that is necessary isto give the tubular member 3711 partialrotation which is facilitated by the arranging of a hand-grip 51 at the outer side i of the locking member to: cause the locking lugs 38 to register with the notches in the flanged member .41. The GOIIt-alIIBIwlSRI ranged with a filler opening 52 which is closed by a removable cap 53. i

From the foregoingdescription it will be obvious that in the normalcondition of the device the liquid is not under compression,

the piston mechanismbeing releasably locked in position with the spring contracted and though the spring is exerting a force upon the piston mechanism this is notapplied to the liquid. However, as soon as the piston mechanism is released the tension of the closed by a valve 82 contained within the tubular portion of the plug and normally urged to position to engage a seat arranged about the inner end of the cap perforation by a spring 83. Should a vacuum for any reason be created in the spring chamber of the container this vacuum will unseat the valve 82 and permit the entrance of air in said chamber. To drain liquid from said chamberthe cap is removed.

Having thus described my invention, I claim:

r 1.1 The combinationof a liquid carrying container, means to place the liquidin the container under com ression including B com ressionchamber mto which the liquid is ischarged from the container, outlet means in communication with said chamber of the compression means, and means operative to seal the outlet means and means to retain the compression means in inactive position, said latter means being operative to release the compression means to eject the liquid from the said container.

2. The combination of a liquid carrying container, spring actuated piston mechanism therein including a chamber movable with the piston to place theliquid undercompression, outlet means in communication with the chamber of the piston mechanism, and means operative to retain the piston mechanism in position with its actuating spring contracted, and means to seal the container outlet with the piston in such position, said retaining means being operative to release the piston mechanism and open the outlet means to theatmosphera v 3. The combination ofa liquid carrying container, s ring actuated piston mechanism therein inc uding a chamber movable with the piston andin communication with the liquid in the container, anioutlet for the container including a tube constituting a con- "lilnlla'tlon thereof and In communlcatlcn with the piston chamber, and means to retain .the piston in position with its actuating sprlng contracted to maintain in pre-determined position a closure to seal the outlet tube when the pistonis in such position, said means being operable to release the piston and the discharge tube fro n its closure for the purpose specified. i

4;. The combination of carrying container, a piston to separate said container into two chambers onechamber adapted to carry liquid at one side of the piston, a spring to drive the piston in the chamber I at the opposite side of the piston, a discharge tube for the liquid in the containerhaving the side of the piston at which the spring is located and in communication with the liquid in thecontainer at the opposite side of the piston through the piston, means to releasably hold the piston in position with the spring contracted, and a closure to seal the outlet tube when thetpiston is in said positiomy 1 I A 5. The combination of a liquid carrying container, spring actuated piston mechanism therein to place the liquid under compression includinga chamber movable with the piston mechanism, a discharge tube in communication with said chamber, means to releasably retain the piston in position with the spring contracted, and means carried by an outlet from the end of the container and v i mechanism in said container to place the liquid therein under compression including a casing having a chamber 111 communicatlon with the container and movable with the piston mechanism, discharge outlet means from said container including a tubular member in communication with the chamber of the piston mechanism in all positions thereof, means operable to releasably hold the piston mechanism from movement and means to shut off communication between the container and the exterior thereof.

7. The combination of a liquid carrying container spring actuated piston mechanism in said container to place the liquid therein under compression, a chamber movable with the piston'in communication with the liquid carrying container, outlet means for said container comprising a tubular member in communication with the chamber and the exterior of the container, to conduct the liquid from the container to the exterior of the container when the liquid is under compression, and means operable to shut off communication betweenthe liquid carrying container and the exterior thereof.

8. The combination of a liquid carrying container, spring actuated piston mechanism therein to'place the liquid under compression including a chamber movable with the piston mechanism, outlet means for said container comprising tubular means to connect the chamber with the exterior of the container, means to releasably retain the piston mechanism with its spring contracted, said means being operable to release the piston mechanismto eject the liquid from said container and means carried by the piston to shut off and open u communication between the liquid carrying container and the exterior thereof.

9. The combination of a liquid carrying container, spring actuated piston mechanism including a chamber to place the liquid in the container under com ression, a discharge tube communicating witthe chamberof the piston mechanism in all positions of the lat ter, means slidably engaging in an opening in the container to move the piston to position to contract the spring and releasably secure the piston mechanism in such posi tion, and a closure operable to seal the outwith the liquid carrying container, outlet means for said container comprising a tubular member in communication with the atmosphere and with said casing to conduct the liquid from said casing to the exterior of the container, means to releasably maintain the piston mechanism in a pre-determined position and valve means carried by the piston mechanism to open u munication between the liquid carrying container and the exterior thereof.

11. In a liquid carrying container, a piston mechanism to place the liquid therein under compression, a casing having a chamber attached to and movable with the piston mechanism, said chamber having communication with the liquid carrying container, outlet means for said container comprising a tubular member connecting said chamber with the exterior of the container to conduct the liquid from said container to the exterior thereof, means to releasably hold the piston mechanism in a pre-determined position and means to shut off and open up communicv tion between the liquid carrying container and the exterior thereof." 1

12. The combination of a liquid carrying container having outlet means, piston mechanism therein to divide the container into two chambers one of said chambers being adapted to carry li uid at one side of the piston, a 5 ring in t e other chamber at the other si e of the iston to actuate the piston to place the liquid in the container under compression, a discharge tube in communication with the outlet means of the container, means movable withthe piston mechanism to establish communication between the said tubular member and the liquid carrying container to conduct the liquid to the exterior of the liquid carrying container, means to releasably hold the piston with the s ringcontracted and means to shut off an open up communication between the liquid carrying 1 container and the exterior thereof.

Signed at New York city, in the county of New York and State of New York, this 8th day of May, 1922.

GEORGE T. PEARSONS.

and shut off com-