US2238521A - Spray gun - Google Patents

Spray gun Download PDF

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Publication number
US2238521A
US2238521A US30537239A US2238521A US 2238521 A US2238521 A US 2238521A US 30537239 A US30537239 A US 30537239A US 2238521 A US2238521 A US 2238521A
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Prior art keywords
spray
rod
barrel
seat
sleeve
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Expired - Lifetime
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Gustafson Gustaf
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Individual
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Priority to US30537239 priority Critical patent/US2238521A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/12—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means capable of producing different kinds of discharge, e.g. either jet or spray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
    • B05B9/01—Spray pistols, discharge devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/598—With repair, tapping, assembly, or disassembly means
    • Y10T137/6161—With provision of alternate wear parts
    • Y10T137/6164—Valve heads and/or seats
    • Y10T137/6167—Opposite duplicate surfaces of unitary structure
    • Y10T137/6171—Homogeneous material

Definitions

  • My invention relates to improvements in spray gun nozzles for use in connection with a hose or pipe line, more particularly in spraying trees, plants, etc., with insecticide.
  • the principal object of the invention is to provide a spray gun assembly constructed and arranged to reduce to a minimum hydraulic friction therein and adapted for maximum flexibility, as regards control, to vary the density and velocity of the spray
  • Figure l is a view in side elevation of the preferred embodiment of my invention.
  • Figure 2 is a fragmentary view partly in longitudinal section and partly in side elevation of the rear part of the gun drawn to an enlarged scale
  • FIG. 3 is a similar view of the front part the gun
  • Figure 4 is a view in front elevation of the spray-control member
  • Figure 5 is a detailview in transverse section taken on the line 5-5 of Figure 3 looking in the direction indicated by the arrows,
  • Figure 6 is a view in perspective of the front end of the spray-control rod.
  • Figure 7 is a view in longitudinal section taken on the line 1-1 of Figure 2 looking in the direction indicated by the arrows and drawn to an enlarged scale.
  • said barrel I Forwardly of the rear end portion 3, said barrel I forms a pressure storage chamber 5 therein and is provided with an inlet nipple B for the attachment of said barrel to a hose, or pipe line, not shown, as through the'medium of the usual coupling .1 threaded into the outer end of said nipple with a gasket 8 clamped between the same and an internal shoulder 9 in the nipple.
  • the nipple 6 inclines forwardly to the barrel I for a purpose which will be apparent.
  • nozzle tube III Detachably connected, as presently described, to the front end 2 of the barrel I to extend forwardly and axially therefrom is an elongated nozzle tube in slightly smaller in diameter than that of the chamber 5.
  • the connection between the nozzle tube III and barrel I comprises an annular coupling II threaded onto the rear end of said tube and into said front end 2 of barrel I, said coupling II being of the sameinternal diameter assaid tube Ill.
  • the coupling II also functions as a lamb nut to clamp a disk-like annulus I2 into the front 'end 2 of the barrel I against an internal shoulder I3 formed by the juncture of said end and barrel, said annulus being of suitable metal and forming a small valve seat I4 concentric to the chamber 5 and tube II), a resilient gasket I5 being interposed between said annulus I2 and coupling II.
  • the annulus I2 is reversible so that either side thereof may form the seat I4 whereby a new seat may be readily provided in case one becomes worn.
  • the front end of the nozzle tube I0 has threaded therein a forwardly extending and tapering nozzle type spray head I6 provided with a reduced externally threaded front end I1.
  • the head I6 is provided intermediate its ends with an internal transversely flat annular seat I8, and tapers internally to said seat, as at is, in the'rear thereof and also forwardly of said seat, as at 20, to a restricted outlet 2
  • the tapered portion 20 has a particular function presently seen.
  • An out-' wardly flaring spray deflector nipple 22 is threaded onto the end I! of the head I6 with a resiiient gasket 22'- interposed between the same and said end.
  • a valve control rod 23 having the rear end thereof extending rearwardly of said barrel and provided with a cylindrical, knurled hand grip 24 suitably fixed on said rod by a nut 25 and having within the rear end 3 of said barrel I a worm section 23' thereon turning in the threads 4, whereby said rod may, under rotation of said hand grip 24 in opposite directions, be fed forwardly and rearwardly.
  • a packing gland 26 is threaded onto the rear end 3 of the barrel I with a gasket 21 and packing 28 therein for preventing leakage past said end.
  • a coupling sleeve 29 Threaded part way onto the front end of the valve control rod 23 is a coupling sleeve 29 having an enlarged front valve end 30. Threaded into the front end of coupling sleeve 29 is the rear end of a spray-control rod 3
  • a resilient valve washer 32 Adjustably clamped against said front end by means of a sleeve 33 threaded onto rod 3
  • extends forwardly into nozzle tube I to'substantially the front end thereof and has slidably mounted thereon a spray-control member in the form of a longitudinally ribbed sleeve 35 slid'ably fitted in the nozzle tube In and having extending from the front end thereof a spray-control valve member 36.
  • the valve member 38 comprises anintermediate, spirally grooved circular flange 31 fltting in the before described seat l8, slidably, a rcarwardly tapering neck 33 between said flange 31 and sleeve 35, and a forwardly tapering tip 33 fitting loosely in the tapered part or portion 20 of spray head IS.
  • between the sleeve 35 and a cotter pin 40 in said rod urges the sleeve 35 forwardly on the rod and hence the flange 31 onto seat I8 and the tip 38 into the tapered portion 20 of spray head l6.
  • is limited by a longitudinally extending slot 4
  • valve-control rod 23 may be adjusted endwise in opposite directions to adjust the-valve washer 32 toward and from the seat It to control the volume of liquid entering the chamber 5 and passing to the spray head l6.
  • annulus I2 may be reversed to present a new valve seat I4 as required.
  • the liquid passing between the ribs of sleeve is directed through the grooves of flange 31 whereby it is caused to swirl as it emerges through outlet 2
  • the valve washer 32 may be backed off the seat It while the flange 31 and tip 33 are held by the spring 39 in the described position in the spray head l6, thereby providing for increase of volume and pressure to head I6 causing the spray to spread in a wide stream which may be varied at will.
  • valve washer 32 By backing off valve washer 32 from seat l4 until spray-control rod 3
  • may be disconnected to disassemble the parts as will be clear.
  • may be adjusted endwise, relatively, to compensate for wear in valve washer 32, seat I4, gasket 22, and between flange 31 and seat II.
  • a spray gun a tubular barrel having a ment under turning and providedwith a hand grip in the rear of said barrel for turning the same, a coupling sleeve threaded onto the front end of said rod for endwise movement therewith in the rear of said seat, a second rod threaded into said sleeve and extending into said nozzle tube for endwise movement with the secondmentioned rod, a valve washer fixed on the secand-mentioned rod for'engagement and disengagement with said seat under endwise movement of said rods, and a-spray control member on the front end of the second-mentioned rod extending into said head and adjustable under endwise movement of said rods to vary its position in said head, said rods being endwise adjustable relatively under turning of said coupling sleeve to vary the normal relation of said washer and spray-control member, said second-mentioned rod having a lost motion connection with said spray control member whereby under endwise movement of said rods said washer is first disengaged from said seat
  • a tubular barrel having a fluid inletnipple extending therefrom intermediate its -ends, an annular disk detachably mounted in the front end of said barrel and forming a reversible valveseat, a nozzle tube detachably secured at one end in said front end of said barrel and terminating at its opposite end in a conical spray head, a control rod threaded into the rear end of said barrel for endwise movement under turning and provided with a hand grip in the rear of said barrel for turning the same, a coupling sleeve threaded onto the front end of said rod for endwise movement therewith in the rear of said seat, a second rod threaded into said sleeve and extending into said nozzle tube for endwise movement with the first-mentioned rod, a valve washer flxed on the second mentioned rod for engagement and disengagement with said seat under endwise movement of said rods, and a spray control member on the frontend of the second-mentioned rod

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Description

April 15, 1941. G. GusfAFsoN SPRAY GUN Filed NOV. 20, 1939 2 Sheets-Sheet 1 Inventor A Home 115 Patented Apr. 15, l 94l UNITED STATES PATENT OFFICE 2,238,521 SPRAY GUN Gustaf Gustafson, Yakima, Wash.
Application November 20, 1939, Serial No. 305372 2 Claims.
My invention relates to improvements in spray gun nozzles for use in connection with a hose or pipe line, more particularly in spraying trees, plants, etc., with insecticide.
The principal object of the invention is to provide a spray gun assembly constructed and arranged to reduce to a minimum hydraulic friction therein and adapted for maximum flexibility, as regards control, to vary the density and velocity of the spray To the accomplishment of the above, and subordinate objects presently appearing, a preferred embodiment of my invention has been illustrated in the accompanying drawings, set forthin detail in the succeeding description and defined in the claims appended hereto.
In said drawings:
Figure l is a view in side elevation of the preferred embodiment of my invention,
Figure 2 is a fragmentary view partly in longitudinal section and partly in side elevation of the rear part of the gun drawn to an enlarged scale,
Figure 3 is a similar view of the front part the gun,
Figure 4 is a view in front elevation of the spray-control member,
Figure 5 is a detailview in transverse section taken on the line 5-5 of Figure 3 looking in the direction indicated by the arrows,
Figure 6 is a view in perspective of the front end of the spray-control rod, and
Figure 7 is a view in longitudinal section taken on the line 1-1 of Figure 2 looking in the direction indicated by the arrows and drawn to an enlarged scale.
III
and formed with an internal worm thread 4.
Forwardly of the rear end portion 3, said barrel I forms a pressure storage chamber 5 therein and is provided with an inlet nipple B for the attachment of said barrel to a hose, or pipe line, not shown, as through the'medium of the usual coupling .1 threaded into the outer end of said nipple with a gasket 8 clamped between the same and an internal shoulder 9 in the nipple. The nipple 6 inclines forwardly to the barrel I for a purpose which will be apparent.
Detachably connected, as presently described, to the front end 2 of the barrel I to extend forwardly and axially therefrom is an elongated nozzle tube in slightly smaller in diameter than that of the chamber 5. The connection between the nozzle tube III and barrel I comprises an annular coupling II threaded onto the rear end of said tube and into said front end 2 of barrel I, said coupling II being of the sameinternal diameter assaid tube Ill. The coupling II also functions as a lamb nut to clamp a disk-like annulus I2 into the front 'end 2 of the barrel I against an internal shoulder I3 formed by the juncture of said end and barrel, said annulus being of suitable metal and forming a small valve seat I4 concentric to the chamber 5 and tube II), a resilient gasket I5 being interposed between said annulus I2 and coupling II. As will be readily seen, the annulus I2 is reversible so that either side thereof may form the seat I4 whereby a new seat may be readily provided in case one becomes worn.
The front end of the nozzle tube I0 has threaded therein a forwardly extending and tapering nozzle type spray head I6 provided with a reduced externally threaded front end I1. The head I6 is provided intermediate its ends with an internal transversely flat annular seat I8, and tapers internally to said seat, as at is, in the'rear thereof and also forwardly of said seat, as at 20, to a restricted outlet 2|. The tapered portion 20 has a particular function presently seen. An out-' wardly flaring spray deflector nipple 22 is threaded onto the end I! of the head I6 with a resiiient gasket 22'- interposed between the same and said end.
Extending through the barrel I, to within a short distance of the end- 2, is a valve control rod 23 having the rear end thereof extending rearwardly of said barrel and provided with a cylindrical, knurled hand grip 24 suitably fixed on said rod by a nut 25 and having within the rear end 3 of said barrel I a worm section 23' thereon turning in the threads 4, whereby said rod may, under rotation of said hand grip 24 in opposite directions, be fed forwardly and rearwardly. A packing gland 26 is threaded onto the rear end 3 of the barrel I with a gasket 21 and packing 28 therein for preventing leakage past said end.
Threaded part way onto the front end of the valve control rod 23 is a coupling sleeve 29 having an enlarged front valve end 30. Threaded into the front end of coupling sleeve 29 is the rear end of a spray-control rod 3|. Sleeved onto the control rod 3| against the front end of the valve end 30 of sleeve 29 is a resilient valve washer 32 adjustably clamped against said front end by means of a sleeve 33 threaded onto rod 3| and provided with a front nut terminal 34. The
be engaged with and disengaged from the valve seat H.
The spray control rod 3| extends forwardly into nozzle tube I to'substantially the front end thereof and has slidably mounted thereon a spray-control member in the form of a longitudinally ribbed sleeve 35 slid'ably fitted in the nozzle tube In and having extending from the front end thereof a spray-control valve member 36. The valve member 38 comprises anintermediate, spirally grooved circular flange 31 fltting in the before described seat l8, slidably, a rcarwardly tapering neck 33 between said flange 31 and sleeve 35, and a forwardly tapering tip 33 fitting loosely in the tapered part or portion 20 of spray head IS. A coil spring 33 sleeved onto said rod 3| between the sleeve 35 and a cotter pin 40 in said rod urges the sleeve 35 forwardly on the rod and hence the flange 31 onto seat I8 and the tip 38 into the tapered portion 20 of spray head l6. Sliding movement of the sleeve 35 on the rod 3| is limited by a longitudinally extending slot 4| in said rod and a cotter pin 42 extending through said sleeve and slot.
As will now be seen, under manipulation of the hand grip 24, the valve-control rod 23 may be adjusted endwise in opposite directions to adjust the-valve washer 32 toward and from the seat It to control the volume of liquid entering the chamber 5 and passing to the spray head l6. By
fluid inlet nipple extending therefrom intermediate its ends, an annular disk detachably mounted in the front end of said barrel and formthe rearend of said barrel for endwise movedetaching the coupling II, and gasket IS, the
annulus I2 may be reversed to present a new valve seat I4 as required. The liquid passing between the ribs of sleeve is directed through the grooves of flange 31 whereby it is caused to swirl as it emerges through outlet 2|. By virtue of the described arrangement of the sleeve 33 on said rod 3|, the valve washer 32 may be backed off the seat It while the flange 31 and tip 33 are held by the spring 39 in the described position in the spray head l6, thereby providing for increase of volume and pressure to head I6 causing the spray to spread in a wide stream which may be varied at will. By backing off valve washer 32 from seat l4 until spray-control rod 3| picks up the sleeve 35, through the slot 4| and cotter pin 42, the flange 31 may be backed off of seat I! and the tip 38 withdrawn from the tapered part 20 of the head l6 thereby providing for creating a long narrow spray stream also variable at will. By turning the coupling 29, the rods 23 and 3| may be disconnected to disassemble the parts as will be clear. Also by adjusting the coupling 23 the rods 23, 3| may be adjusted endwise, relatively, to compensate for wear in valve washer 32, seat I4, gasket 22, and between flange 31 and seat II.
The foregoing will, it is believed, suflice to impart a clear understanding of my invention without further explanation.
Manifestly the invention, as described, is susceptible of modification without departing from the inventive concept and right is herein reserved to such modifications as fall within the scope of the subjoined claims.
What I claim is:
1. In. a spray gun, a tubular barrel having a ment under turning and providedwith a hand grip in the rear of said barrel for turning the same, a coupling sleeve threaded onto the front end of said rod for endwise movement therewith in the rear of said seat, a second rod threaded into said sleeve and extending into said nozzle tube for endwise movement with the secondmentioned rod, a valve washer fixed on the secand-mentioned rod for'engagement and disengagement with said seat under endwise movement of said rods, and a-spray control member on the front end of the second-mentioned rod extending into said head and adjustable under endwise movement of said rods to vary its position in said head, said rods being endwise adjustable relatively under turning of said coupling sleeve to vary the normal relation of said washer and spray-control member, said second-mentioned rod having a lost motion connection with said spray control member whereby under endwise movement of said rods said washer is first disengaged from said seat and said spray control member subsequently adjusted.
2. In a spray gun, a tubular barrel having a fluid inletnipple extending therefrom intermediate its -ends, an annular disk detachably mounted in the front end of said barrel and forming a reversible valveseat, a nozzle tube detachably secured at one end in said front end of said barrel and terminating at its opposite end in a conical spray head, a control rod threaded into the rear end of said barrel for endwise movement under turning and provided with a hand grip in the rear of said barrel for turning the same, a coupling sleeve threaded onto the front end of said rod for endwise movement therewith in the rear of said seat, a second rod threaded into said sleeve and extending into said nozzle tube for endwise movement with the first-mentioned rod, a valve washer flxed on the second mentioned rod for engagement and disengagement with said seat under endwise movement of said rods, and a spray control member on the frontend of the second-mentioned rod extending into said head and adjustable under endwise movement of said rods to vary its position in said head, said rods being endwise adjustable relatively under turn-- GUSTAF GUSTAFSON/
US30537239 1939-11-20 1939-11-20 Spray gun Expired - Lifetime US2238521A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448159A (en) * 1944-08-02 1948-08-31 F E Myers & Bro Company Spray gun
US2460545A (en) * 1940-06-15 1949-02-01 F E Myers & Bro Company Spray gun
US2520824A (en) * 1949-03-25 1950-08-29 American Marsh Pumps Inc Spray gun for fire apparatus and the like
US2586266A (en) * 1945-07-09 1952-02-19 Santarelli Vincent Sprayer
US2621076A (en) * 1948-06-07 1952-12-09 American Marsh Pumps Inc Spray gun for fire apparatus and the like
US2626188A (en) * 1947-03-14 1953-01-20 American Brake Shoe Co Spray gun
USD435637S (en) * 1999-09-16 2000-12-26 Michael Wales Shower arm diverter
US20110266371A1 (en) * 2010-05-03 2011-11-03 Fontaine James R Spray gun
US20120325934A1 (en) * 2011-06-23 2012-12-27 Delorme John D Manually operable spray gun for providing a variable spray pattern

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460545A (en) * 1940-06-15 1949-02-01 F E Myers & Bro Company Spray gun
US2448159A (en) * 1944-08-02 1948-08-31 F E Myers & Bro Company Spray gun
US2586266A (en) * 1945-07-09 1952-02-19 Santarelli Vincent Sprayer
US2626188A (en) * 1947-03-14 1953-01-20 American Brake Shoe Co Spray gun
US2621076A (en) * 1948-06-07 1952-12-09 American Marsh Pumps Inc Spray gun for fire apparatus and the like
US2520824A (en) * 1949-03-25 1950-08-29 American Marsh Pumps Inc Spray gun for fire apparatus and the like
USD435637S (en) * 1999-09-16 2000-12-26 Michael Wales Shower arm diverter
US20110266371A1 (en) * 2010-05-03 2011-11-03 Fontaine James R Spray gun
US8939387B2 (en) * 2010-05-03 2015-01-27 Chapin Manufacturing, Inc. Spray gun
US20120325934A1 (en) * 2011-06-23 2012-12-27 Delorme John D Manually operable spray gun for providing a variable spray pattern

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