US2811391A - Electric spray-gun - Google Patents

Electric spray-gun Download PDF

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Publication number
US2811391A
US2811391A US397383A US39738353A US2811391A US 2811391 A US2811391 A US 2811391A US 397383 A US397383 A US 397383A US 39738353 A US39738353 A US 39738353A US 2811391 A US2811391 A US 2811391A
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US
United States
Prior art keywords
armature
piston
nozzle
electromagnet
bolt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US397383A
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English (en)
Inventor
Krebs Theodor
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Individual
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Individual
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Publication date
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Publication of US2811391A publication Critical patent/US2811391A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
    • B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
    • B05B9/08—Apparatus to be carried on or by a person, e.g. of knapsack type
    • B05B9/085—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump
    • B05B9/0855—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven
    • B05B9/0861—Apparatus to be carried on or by a person, e.g. of knapsack type with a liquid pump the pump being motor-driven the motor being electric
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads

Definitions

  • the invention relates to an electric spray-gun.
  • the material to be sprayed has hitherto been broken down into extremely small particles by means of compressed air and projected on to the article to be sprayed.
  • the subject of the invention is characterised by the fact that a pressure pump supplies the pressure required for spraying the material directly, without interposition of compressed air, and that the piston of this pressure pump is actuated by an oscillating armature which is moved electromagnetically, which piston delivers the liquid under pressure into a storage chamber from which the said liquid ilows into the spraying nozzle.
  • Figure 1 is a section through the longitudinal axis of the pressure pump and a front view of the oscillating armature and the magnet after partly breaking away the cover;
  • Figure 2 is a longitudinal section of a second embodiment taken through the pump axis and the middle of the electromagnet;
  • Figure 3 is a longitudinal section through a third embodiment of the oscillating armature arrangement
  • Figure 4 is a front View, with the oscillating armature shown partly in section along the line A-B of Figure 3;
  • Figure 5 is a longitudinal section of the spraying nozzle to a larger scale
  • Figure 6 is a longitudinal section of a second embodiment of the spraying nozzle
  • Figure 7 is a longitudinal section of a third embodiment of the spraying nozzle.
  • Figure 8 is a side elevation of the spray-gun with the spraying nozzle according to Figure 7, shown partly in section, screwed thereon.
  • the housing of the spray-gun is indicated at 1.
  • 4 is the bundle of laminations and 4b is the coil of the electromagnet 23;
  • the upper end of the oscillating armature bears at that side which facesl the electromagnet and which is arranged in y "ice the rear part of the spray-gun, against a thrust bolt 8 which is displaceably mounted in a guide member 9 and which transmits the oscillations of the oscillating armature to the piston 10 of the pressure pump built into the front part of the spray-gun.
  • That outer end of the piston 10 of the pressure pump which is constructed as a head bears against that end of the thrust bolt 8 which is disposed remote from the upper end of the oscillating armature 5.
  • a return spring 11 is arranged between the inner end of the piston head of the pressure pump and the inner end face of the pressure pump cylinder 12.
  • a pressure valve which consists of a ball 13 bearing under the action of the spring 14 on the valve seat inside the pump cylinder.
  • the conical outer end of the suction pipe 18, which is screwed into the container mounting 2 secured to the front of the spray-gun on the underside, is positioned in a conical hole of the pressure pump cylinder 12, which hole is formed in the middle portion of the said cylinder at right angles to its longitudinal axis and extends as far as its cylinder space 12a.
  • That end of the suction pipe which is disposed inside the container 15 is bent over at an angle.
  • 16 is a pressure-equalising pipe which extends through the container mounting 2 into the container 15.
  • the pressure pump cylinder 12 is secured against displacement along its longitudinal axis by the conical outer end of the suction pipe 18.
  • the oscillating armature 5 is provided at its bottom end remote from the thrust bolt 8 of the pump piston 10 with a bearing which is nondisplaceable in a planeV disposed parallel to its Contact surface.
  • one side of the bottom end of the oscillatingl armature 5 bears against the bottom end of the bundle of laminations 4 of the elctromagnet 23, while the opposite side of the bottom end of the oscillating armature 5 is secured against displacement by meansk of a pin 5a resiliently supported r by the spring 5b, said pin being guided in a bore Se of the housing, it being possible for the tension of the spring 5b to be adjusted by a screw 5f fitted in the said bore.
  • one side of the bottom end of the oscillating armature 5 bears against the bottom end face of the bundle of laminations 4 of the electromagnet 23, while the opposite side is formed with a spherical depression 5d in which bears the spherical end of a pin 5a which is guided in the bore 5e of abolt 5f screwed into the housing, and the bottom end of the oscillating armature 5 is urged against the bottom end of the bundle of laminations 4 of the electromagnet 23 by means of a spring 5b provided in the said bore.
  • the upper end of the oscillating armature 5 is provided ⁇ on that side facing the bundle of laminations 4 of the electromagnet 23 with a longitudinal slot 5c in which engages the thrust bolt 8.
  • the spherical depression in the oscillating armature which is opposite the said longitudinal slot 5c in said armatureV 5 is the spherical end of an adjusting bolt 24, which is fitted inside an adjusting screw 6- andv is. guided in the head thereof.
  • the adjusting spring 7 Positioned inside this adjusting screw 6 is the adjusting spring 7 by whichthe spherical end of the adjusting ⁇ bolt 24Y is urged with greater or lesser force against thev oscillating armature by turning the adjusting screw 6,.y
  • the upper end of the Voscillatingv armature in the construction according to Figure 2 is reduced as far as its centre 5g Ion the side thereof facing the thrust bolt 8 and is formed in this surface 5g with a longitudinal slot 5c which is engaged by the thrust bolt 8.
  • the spherical end of the adjusting bolt 24 bears on that at side 5h of the oscillating armature 5 which is opposite the said longitudinal slot, said bolt being'reduced in diameter to accommodate the adjusting spring 7 and being guided at its inner and outer ends in the adjusting screw 6 which is capable of being adjusted by a threaded connection in the housing.
  • the bottom extended end of the oscillating armature 5 in the construction according to Figures 3 and 4 is pivotally connected by means of the shaft 5k to a pin 5a which is guided in the bore 5e of a bolt 5f which is in screw-threaded connection with the housing.
  • a spring 5b provided in the said bore the bottom end of the oscillating armature 5 is urged by means of the pin 5a against the bottom end of the bundle of laminations 4 of the electromagnet 23.
  • the upper end of the oscillating armature Sis provided on its side facing the thrust bolt 8 with a longitudinal slot 5c which is engaged by the thrust bolt 8 and is cut away as far as its centre line 5h on the side thereof opposite the said slot.
  • the spherical end of the adjusting bolt 24 bearing against this cut-away flat side 5h of the oscillating armature 5 is the spherical end of the adjusting bolt 24 which is reduced in diameter to accommodate the adjusting spring 7 and is guided at its inner and outer ends in the adjusting screw 6 which is adapted to be adjusted by the screw-threaded connection in the housing.
  • the outer end of the pressure pump cylinder 12 is closed by a locking nut 3 in which is located the cylindrical spraying nozzle 3a which is drilled out longitudinally thereof; provided at the inner end of this bore is a transverse bore which leads outwardly.
  • Swirl grooves arranged at right-angles to one another and eccentrically with respect to the longitudinal axis of the nozzle are formed in the said nozzle on the end thereof facing the spraying hole formed in the end face of the nut.
  • 3b is a sealing ring for the spraying nozzle.
  • the constructional example' according to Figure 5 shows a spraying nozzle in which there is provided at the end of the pressure pump cylinder a locking nut in which is fitted the cylindrical spraying nozzle 3a, which closes the swirl chamber 3f by means of its end facing the nozzle hole 3e and is formed on the edge thereof contacting the inside surface of the chamber :along a circular line 3c with a large number of notches arranged eccentrically with respect to the nozzle axis. That edge of the cylindrical spraying nozzle element 3a which contacts the conical inside surface of the chamber 3f on a circular line 3c is provided in the present constructional example with at least six notches which open into the chamber 3f at a predetermined angle to the radius which is dened by the outer entrance point of the notches.
  • FIG. 6 A modification of the constructional example according to Figure 5 is shown in Figure 6, in which the outer end of the pressure pump cylinder also has a locking nut 3 provided thereon, the said cylindrical spraying nozzle 3a again being disposed in the said nut.
  • the said nut is formed at its outer end with a removable cap 3d in which is located a part of the swirl chamber 3f and the nozzle hole 3e.
  • the cap 3d has a screw-threaded connection with the nut.
  • Figures 7 and 8 show a -constructional example of the spraying nozzle in which a rotational movement around the nozzle needle d is imparted to the material to be sprayed by means of swirl grooves f which are provided on the needle side of the nozzle needle piston b in that space c of the nut z' which is closed by the piston b and into which the nozzle needle d projects; the annular exit surface formed by the hole e of the nozzle hole nut i and the nozzle needle projecting into the said hole may be constantly varied by the relative displacement of the said nut in relation to the said needle.
  • the spinning chamber of the nut i changes from a cylindrical portion c into a conical portion c' which is disposed on the side of the nozzle hole e.
  • a cylindrical cavity c which opens outwardly.
  • the grooves which are next to one another are arranged at right-angles to one another and all are arranged eccentrically of the longitudinal axis of the piston b on the surface thereof and connect the chamber of the nut i with an annular chamber on the surface of the piston b, which chamber e' leads the material to be sprayed into the pressure chamber g through a bore f' which is arranged at right-angles to the longitudinal axis of the nozzle needle piston.
  • the swirl chamber c of the nozzle hole nut i is sealed off in the outward direction by a packing ring h provided in the surface of the nozzle needle piston b and the nut i is held in position relatively to said piston b by means of a threaded connection; that end of the nozzle needle piston b which faces the spray gun is rigidly connected to the outer end of the pressure pump cylinder 12 of the spray-gun.
  • a spray gun operating without the use of cornpressed air, a casing, an electromagnet supported by the casing, a source of liquid to be sprayed, a piston pump directly communicating with the liquid to be sprayed, a thrust bolt operatively associated with the piston pump, an armature adapted to be oscillated by the electromagnet, one end of the armature bearing against the thrust bolt to transmit the oscillations of the armature to the piston pump, means defining a bore in the casing approximately perpendicular to the armature and adjacent to the other end of the armature, a pin in the bore and operatively connected to the armature adjacent to the other end of the armature, spring means within the bore urging the pin in the direction of the armature whereby said other end of the armature is resiliently mounted, manipulable means threaded into the bore and bearing against the spring means to adjust the tension of the spring means, means regulating the stroke of the piston pump to control the flow of liquid to be sprayed, a liquid storage chamber
  • the combination as set forth in claim l wherein the upper end of the oscillating armature is provided on that side facing the core of the electromagnet with a longitudinal slot in which engages the thrust bolt, and the spherical end of an adjusting bolt, which is tted inside an adjusting screw and is guided in the head thereof, bears against that spherical depression in the oscillating armature which is opposite the said longitudinal slot in said armature, and that an adjusting spring also incorporated inside the adjusting screw urges the spherical end of the adjusting bolt against the oscillating armature.
  • the combination as set forth in claim 1 wherein the outer end of the pressure pump cylinder is provided with a locking nut in which is tted the cylindrical spraying nozzle, which closes a swirl chamber by means of its end facing the nozzle hole and is formed on the edge thereof contacting the inside surface of the swirl chamber along a circular line with a large number of notches arranged eccentrically with respect to the nozzle axis.
  • a spray gun as defined in claim 1 wherein the other end of the armature is pivotally connected to the pin which is guided in the bore of a hollow bolt threadedly connected to the casing, the spring means within the bore urging the other end of the armature against the bottom end of the electromagnet core, and the angle between the piston pump axis and the center line of the contact surface of the electromagnet being more than 90 degrees.
  • a spray gun operating without the use of compressed air
  • the combination which comprises a source of liquid to be sprayed, an electromagnet, an armature oscillated by the electromagnet, a piston pump directly communicating with the liquid to be sprayed and actuated by the oscillated armature, means for regulating the stroke of the piston pump for controlling the ow of liquid to be sprayed, means resiliently mounting one end of said armature, a thrust bolt operatively associated with the piston pump, the other end of said armature bearing against the thrust bolt which transmits the oscillations of the said armature to the piston of the pump, a liquid storage chamber to which liquid is supplied under pressure by the piston, and a spray nozzle communicating with said storage chamber, the angle between the pump piston axis and the centre line of the Contact surface of the electromagnet being somewhat more than 90.
  • a spray gun operating without the use of compressed air, a casing, an electromagnet supported by the casing, a source of liquid to be sprayed, a piston pump directly communicating with the liquid to be sprayed, a thrust bolt operatively associated with the piston pump, an armature adapted to be oscillated by the electromagnet, one end of the armature bearing against the thrust bolt to transmit the oscillations of the armature to the piston pump, one side of the other end of the oscillating armature bears against the bottom end face of the core of the electromagnet, the opposite side of the other end of the armature being formed with a spherical depression, means defining a bore in the casing approximately perpendicular to the armature and adjacent to the other end of the armature, a hollow bolt threaded into the bore, a pin guided in the hollow bolt and having a spherical end bearing in the depression of the armature, spring means within the hollow bolt urging the end of the pin in the depression where
  • the combination as set forth in claim 10 wherein the upper end of the oscillating armature is reduced as far as its centre on the side thereof facing the thrust bolt and is formed in this surface with a longitudinal slot which is engaged by the thrust bolt, and that the spherical end of an adjusting bolt bears on that at side of the oscillating armature which is opposite the said longitudinal slot, said bolt being reduced in diameter to accommodate an adjusting spring and being guided at its inner and outer ends in an adjusting screw which is capable of being adjusted by a threaded connection in the housing.
  • a spray gun operating without the use of compressed air, a casing, an electromagnet supported by the casing, a source of liquid to be sprayed, a piston pump directly communicating with the liquid to be sprayed, a thrust bolt operatively associated with the piston pump, an armature adapted to be oscillated by the magnet, means resiliently mounting the lower end of the armature to the casing, the upper end of the armature being provided with means engageable with the thrust bolt, such engageable means including a longitudinal slot on the side of the armature facing the thrust bolt which is engaged by the thrust bolt, this upper end being cut away as far as its centre line of the side thereof opposite the said slot, an adjusting bolt having a spherical end bearing against the cut-away flat side of the armature and which is reduced in diameter to accommodate an adjusting spring, an adjusting screw which is adapted to be adjusted by a screw-threaded connection in the casing and which guides the inner and outer ends of the bolt, a liquid storage chamber to which liquid is supplied under

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nozzles (AREA)
US397383A 1952-12-10 1953-12-10 Electric spray-gun Expired - Lifetime US2811391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH732606X 1952-12-10

Publications (1)

Publication Number Publication Date
US2811391A true US2811391A (en) 1957-10-29

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Application Number Title Priority Date Filing Date
US397383A Expired - Lifetime US2811391A (en) 1952-12-10 1953-12-10 Electric spray-gun

Country Status (7)

Country Link
US (1) US2811391A (no)
BE (1) BE516980A (no)
CH (2) CH300674A (no)
FR (1) FR1078056A (no)
GB (1) GB732606A (no)
LU (1) LU31877A1 (no)
NL (2) NL78846C (no)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999646A (en) * 1958-08-16 1961-09-12 Charles S Tanner Company Spray gun
DE1177565B (de) * 1958-08-16 1964-09-03 Vertriebsgesellschaft Ing Wagn Kompressorlose Spritzpistole zur Zerstaeubung von Fluessigkeiten, insbesondere von Farbe
US3445068A (en) * 1965-12-17 1969-05-20 Josef Wagner Liquid atomizer
WO2004035224A2 (en) * 2002-10-16 2004-04-29 Brian Hartley A spray device
US20100072300A1 (en) * 2008-09-24 2010-03-25 Miller William S Paint sprayer
US20100282776A1 (en) * 2008-03-26 2010-11-11 S. C. Johnson & Son, Inc. Handheld Device for Dispensing Fluids

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3000576A (en) * 1960-03-01 1961-09-19 Spee Flo Company Spray gun

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410692A (en) * 1943-06-17 1946-11-05 Safety Car Heating & Lighting Liquid discharging device
CH259232A (de) * 1946-07-15 1949-01-15 Belz August Vibrationsmotor.
US2462001A (en) * 1946-02-04 1949-02-15 Gilbert & Barker Mfg Co Electrically operated spray outfit
GB625419A (en) * 1945-03-26 1949-06-28 Bedri Hussein Gostkowski Improvements in or relating to a motor for electro-mechanical razors
US2494837A (en) * 1948-02-26 1950-01-17 Burgess Battery Co Sprayer or atomizer
DE855826C (de) * 1950-07-28 1952-11-17 Rudolf Eichenauer Spritzpistole mit Kolbenpumpe zur Zerstaeubung von Fluessigkeiten
US2704690A (en) * 1952-08-01 1955-03-22 Eichenauer Rudolf Spray gun

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410692A (en) * 1943-06-17 1946-11-05 Safety Car Heating & Lighting Liquid discharging device
GB625419A (en) * 1945-03-26 1949-06-28 Bedri Hussein Gostkowski Improvements in or relating to a motor for electro-mechanical razors
US2462001A (en) * 1946-02-04 1949-02-15 Gilbert & Barker Mfg Co Electrically operated spray outfit
CH259232A (de) * 1946-07-15 1949-01-15 Belz August Vibrationsmotor.
US2494837A (en) * 1948-02-26 1950-01-17 Burgess Battery Co Sprayer or atomizer
DE855826C (de) * 1950-07-28 1952-11-17 Rudolf Eichenauer Spritzpistole mit Kolbenpumpe zur Zerstaeubung von Fluessigkeiten
US2704690A (en) * 1952-08-01 1955-03-22 Eichenauer Rudolf Spray gun

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2999646A (en) * 1958-08-16 1961-09-12 Charles S Tanner Company Spray gun
DE1177565B (de) * 1958-08-16 1964-09-03 Vertriebsgesellschaft Ing Wagn Kompressorlose Spritzpistole zur Zerstaeubung von Fluessigkeiten, insbesondere von Farbe
US3445068A (en) * 1965-12-17 1969-05-20 Josef Wagner Liquid atomizer
WO2004035224A2 (en) * 2002-10-16 2004-04-29 Brian Hartley A spray device
WO2004035224A3 (en) * 2002-10-16 2004-07-01 Brian Hartley A spray device
GB2398528A (en) * 2002-10-16 2004-08-25 Brian Hartley A spray device
GB2398528B (en) * 2002-10-16 2005-02-23 Brian Hartley A spray device
US20060060670A1 (en) * 2002-10-16 2006-03-23 Brian Hartley Spray device
US20100282776A1 (en) * 2008-03-26 2010-11-11 S. C. Johnson & Son, Inc. Handheld Device for Dispensing Fluids
US8777037B2 (en) * 2008-03-26 2014-07-15 S.C. Johnson & Son, Inc. Container for a dispenser
US20100072300A1 (en) * 2008-09-24 2010-03-25 Miller William S Paint sprayer

Also Published As

Publication number Publication date
NL78846C (no)
GB732606A (en) 1955-06-29
CH300674A (de) 1954-08-15
BE516980A (no)
NL88441C (no)
LU31877A1 (no)
FR1078056A (fr) 1954-11-15
CH328666A (de) 1958-03-15

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