US3228611A - Apparatus for cleaning showers - Google Patents

Apparatus for cleaning showers Download PDF

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Publication number
US3228611A
US3228611A US252160A US25216063A US3228611A US 3228611 A US3228611 A US 3228611A US 252160 A US252160 A US 252160A US 25216063 A US25216063 A US 25216063A US 3228611 A US3228611 A US 3228611A
Authority
US
United States
Prior art keywords
tube
liquid
valve
shower
cleaning
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
US252160A
Other languages
English (en)
Inventor
Frank H Russell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bematec SA
Bolton Emerson Americas Inc
Original Assignee
Bolton Emerson SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bolton Emerson SA filed Critical Bolton Emerson SA
Priority to US252160A priority Critical patent/US3228611A/en
Priority to GB1235/64A priority patent/GB986311A/en
Priority to FI640086A priority patent/FI48861C/fi
Priority to NO151613A priority patent/NO125988B/no
Priority to DE19641461059 priority patent/DE1461059C/de
Priority to BR156155/64A priority patent/BR6456155D0/pt
Priority to SE00608/64A priority patent/SE327131B/xx
Priority to AT33564A priority patent/AT265845B/de
Priority to US451087A priority patent/US3432383A/en
Application granted granted Critical
Publication of US3228611A publication Critical patent/US3228611A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/34—Construction or arrangement of spraying pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/52—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter for removal of clogging particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
    • B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
    • B08B9/0551—Control mechanisms therefor
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/32—Washing wire-cloths or felts
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/32—Washing wire-cloths or felts
    • D21F1/325—Washing wire-cloths or felts with reciprocating devices

Definitions

  • the sediment in white water tends to clog the orifices of paper mill showers and it has heretofore been proposed to provide manually reciprocable discs or brushes within the spray tube for periodically cleaning the inner faces of the shower nozzles, or orifices. It has also been proposed to provide a freely slidable cleaning plug, usually with flexible brush bristles, within a spray tube, the plug being movable longitudinally in one direction by the spray liquid pressure and in the opposite direction by a by-pass from the liquid pressure source. It has also been proposed to substitute hot water, or steam for the spray liquid thereby attempting to blow sediment out through the spray orifices and to melt wax-like sediment.
  • the principal object of this invention is to provide a shower assembly with orifice cleaning means which eliminates entirely the back flow of a new supply of shower liquid through the tube and makes use of atmospheric pressure for forcing orifice sediment back through the orifices and into the tube, in conjunction with back flow of liquid already in the tube, to flush out the dislodged sediment from the system.
  • Another object of the invention is to provide a method for cleaning a spray tube which includes the creation of subatmospheric pressure within the tube by power actuated suction, independent of the liquid source, of the contents out of the inlet end of the tube whereby atmospheric pressure presses sediment inwardly to be drawn out of the inlet end of tube in the absence of outward liquid pressure.
  • a further object of the invention is to provide mechanical orifice cleaning means in the form of a freely slidable cleaning brush within a spray tube, the brush closing an air inlet and outlet opening at the far end of the tube under normal spray liquid pressure but being moved to the opposite liquid inlet end of the tube by atmospheric pressure when liquid pressure is shut off, along with sediment forced inwardly from the orifices into the tube by atmospheric pressure.
  • Still another object of the invention is to provide a spray tube with a slidable brush, the brush being vacuum cleaned after, and the sediment vacuum extracted from the tube while, back flushing the tube with liquid already in the tube.
  • a still further object of the invention is to provide a self cleaning shower assembly for intermittently shutting off the liquid supply inlet, creating a vacuum within the tube to slide a cleaning plug therealong, force sediment in the orifices into the tube and draw the sediment into a conduit leading from the inlet end of the tube and, if desired, to apply hot water, or steam, pressure behind the plug to melt any wax-like sediment in the tube or orifices.
  • FIG. 1 is a somewhat diagrammatic front elevational view, partly in half section showing the shower assembly of the invention in normal spray condition.
  • FIG. 2 is a view similar to FIG. 1 showing the vacuum cleaning step when the liquid supply is shut off.
  • FIG. 3 is a view similar to FIG. 1 showing the liquid supply again opened to seal the outlet, and
  • FIG. 4 is a view similar to FIG. 1 showing the vacuum cleaning step being accompanied by a hot water or steam back flushing operation.
  • the paper stock shower assembly 25 of the invention includes the shower tube 26, the tube 26 having a plurality of longitudinally spaced spray orifices such as 27 which may be fiat disc type nozzle inserts or of any other suitable design wherein the inside face 28 of the shower tube is smooth and of uniform cross section.
  • first valve means 31 is provided proximate the inlet end 29 of tube 26 for controlling the flow of spray liquid. As shown, first valve means 31 includes the liquid inlet Valve 32, of the gate or any other suitable type, mounted in the supply pipe 30 and having an operating lever 33 for opening and closing the valve.
  • the opposite other end 36 of shower tube 26 is open, there being a conduit 37 preferably mounted in an end cap 38 and leading into an atmospheric environment at the terminal end 39. While the conduit 37 constitutes means 40 for connecting the other end of the tube to an atmospheric pressure environment, it will be apparent that the assembly would function equally well if there were no conduit and the cap 38 merely served as a valve port.
  • Second valve means 41 is provided in the form of the cleaning plug 42 which is freely slidable longitudinally within the shower tube 26 from its storage position, at the other end 36 shown in FIG. 1 to the inlet end 29 as shown in FIG. 2.
  • the plug 42 constitutes mechanical orifice cleaning means which cooperates with the vacuum orifice cleaning means of the invention.
  • the cleaning plug 42 includes buffer heads 43 and 44, each at an opposite end thereof and each spaced about inch from the inside face 28 of tube 26 and a helical brush 46 extending between the buffer heads and closely fitting the inside face 28 to serve as a piston head adapted to rotate the plug while cleaning the orifices 27.
  • the outer side of the buffer head 43 is shaped as a valve 47 to engage a valve seat 48, formed by the inner end of conduit 37, to constitute means 49 for sealing the other end 36 of shower tube 26 when the tube is under liquid pressure.
  • the fluid extraction means 50 includes the conduit 51 connected to the interior of shower tube 26, between the inlet end 29 and other end 36 and preferably close to the liquid supply pipe 30.
  • Conduit 51 leads to a source of sub-atmospheric pressure not shown, such as mill vacuum, a suitable power actuated vacuum tank and pump or other vacuum source, independent of the source of shower liquid, to thereby remove all extracted sediment from the system.
  • Third valve means 52 is mounted in conduit 51, preferably in the form of a gate, or other type, valve 53 having an operating lever 54 for opening and closing the valve to control the suction in the conduit.
  • Linkage 56 connects the operating levers 33 and 54 whereby one valve is closed when the other valve is open and timing means 57, which may be of any well known type, is shown diagrammatically to indicate that operation may be manual or automatic as desired.
  • cap 70 preferably includes an axially extending tube, or rod, 71 having a rubber bumper 72 at the terminal end, there being a recess 73 for receiving andcushion'ing the buffer 43 while halting and positioning plug 42 opposite conduit 51.
  • the cleaning plug 42 is of predeterm'med length such that it can be stored in the other end 36 without blocking any of the orifices 27 and such that when moved to the 'inlet end 29 by atmospheric pressure through the conduit 37, it will be halted with the brush 46 directly opposite .the' suction conduit 51.
  • a subatmospheric pressure is created within tube 26
  • atmospheric pressure forces any sediment clogging the orifices 27 into the tube 26 and atmospheric pressure pushes cleaning plug 42 along the line of orifices, while rotating the brush to not only clean the orifices but to push the sediment in the direction of the outlet suction conduit 51.
  • the sediment is vacuum cleaned from the brush and from the space between the buffer heads.
  • the spray liquid pressure moves the plug 42 back to its storage position sealing the other end and the plug tends to discharge any sediment on the far side of the plug into the conduit 37.
  • a manual shut-ofi valve 58 is mounted in conduit 37, a second fluid conduit 59 is connected into conduit 37 above valve 58 leading to a source of hot fluid suchas steam, not
  • a fourth valve means 60 is mounted in conduit 59 for controlling the fiow thereof.
  • Linkage 61 connects the operating levers 62 and 63 of the valve 58 and the valve 64 of fourth valve means 60 for joint operation and a timing means 66 similar to means 57 may also be provided if desired. It will thus be seen that the assembly 25 has the additional capability when desired, or if needed, of not only suction cleaning of the orifices 27 inwardly into the tube but of pushing the plug 42 with super atmospheric pressure from its storage position toward the inlet end of the tube and following up the brushing action of the plug with the melting efiect of hot steam.
  • the shower tube 26 is full, of the shower liquid being sprayed from the orifices 27, from the liquid inlet end 29 to beyond the plug 42 up to the valve port, or seat at the far, or other end 36 of the tube.
  • end 36 is not the liquid outlet end of the tube and that the valve port, opening or seat 48 and the conduit 37 are both for the inlet or outlet of air, steam or the like.
  • the power actuated suction in conduit 51 draws the shower liquid out of the tube, the liquid temporarily sealing the orifices 27 and permitting suction to build up to an amount sufiicient to cause atmospheric pressure in port 48 -to dislodge plug 42 and push the plug toward the liquid outlet conduit 51. Atmospheric pressure simultaneously forces any foreign material in the orifices 27 back into the tube to be brushed to the outlet 51 by the plug 42 along with the back flow of the shower liquid then in the tube.
  • a paper stock shower assembly comprising:
  • a shower tube having a liquid inlet end connected to a source of spray liquid, an opposite end leading to an atmospheric pressure environment and a plurality of longitudinally spaced, spray orifices located intermediate of said ends;
  • valve means at the inlet end of said tube, said means controlling the admission of liquid into said tube;
  • valve means at the opposite end of said tube for controlling the admission of atmospheric air into said tube, said means including mechanical, orifice-cleaning means automatically actuated by fluid pressure;
  • a liquid outlet conduit connected to the interior of said shower tube proximate said inlet end and leading to a source of sub-atmospheric pressure, independent of said liquid source, for creating a vacuum in said tube, and
  • valve means in said liquid outlet conduit, said means controlling the discharge of liquid, air and sediment from said tube.
  • a paper stock shower assembly as specified in claim 1 wherein the mechanical, orifice-cleaning means of said second valve means comprises a valve seat proximate the opposite end of said tube, and a cleaning plug slidable longitudinally within said tube, said plug having a valve at one end fitting said seat whereby liquid pressure within said tube forces said valve onto said seat and air pressure, in the absence of liquid pressure, forces said plug toward the inlet end of said tube to clean said orifices.
  • a source of gaseous fluid under super-atmospheric pressure connected to said second conduit, fourth valve means in said conduit for opening and closing the same, and manually operable shut-off valve means in said second conduit for sealing said opposite end of said tube from said atmospheric environment whereby said opposite end may selectively admit atmospheric air into said tube or admit gaseous fluid under super atmopsheric pressure into said tube for actuating said mechanical, orifice-cleaning means and for fluid cleaning of said orifices.
  • a paper stock shower assembly of the type having a shower tube with a normally open, liquid inlet, shut-01f valve at one end, a plurality of spray orifices, and
  • a fluid and sediment extraction conduit connected to the interior of said tube at a predetermined location along the liquid inlet valve end thereof, said conduit having a normally-closed, shut-01f valve and leading to an independent source of sub-atmospheric pressure for creating a vacuum in said tube whereby closing said liquid inlet valve and opening the valve of said fluid extraction conduit creates a subatmospheric pressure in said tube to permit atmospheric pressure to force orifice sediment into said tube while forcing said cleaning plug from said gas port at said other end toward said liquid inlet valve to a position opposite the connection of said extraction conduit.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
US252160A 1963-01-17 1963-01-17 Apparatus for cleaning showers Expired - Lifetime US3228611A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US252160A US3228611A (en) 1963-01-17 1963-01-17 Apparatus for cleaning showers
GB1235/64A GB986311A (en) 1963-01-17 1964-01-10 Improvements in or relating to paper stock shower assemblies
NO151613A NO125988B (enrdf_load_stackoverflow) 1963-01-17 1964-01-16
FI640086A FI48861C (fi) 1963-01-17 1964-01-16 Varsinkin paperikoneiden tai sentapaisten yhteydessä käytettävä lietet tä sisältävien nesteiden suihkutinlaite. Sprutanordning för slamhaltiga vätskor avsedd att anvädas i synnerhet
DE19641461059 DE1461059C (de) 1963-01-17 1964-01-17 Spritzrohr für Papiermaschinen
BR156155/64A BR6456155D0 (pt) 1963-01-17 1964-01-17 Aperfeicoamentos em ou relativos a conjuntos de chuveiro para materia prima de papel
SE00608/64A SE327131B (enrdf_load_stackoverflow) 1963-01-17 1964-01-17
AT33564A AT265845B (de) 1963-01-17 1964-01-17 Sprühvorrichtung, insbesondere für verschlammte Flüssigkeiten
US451087A US3432383A (en) 1963-01-17 1965-04-05 Method for cleaning the orifices of shower tubes by applying suction and brushing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US252160A US3228611A (en) 1963-01-17 1963-01-17 Apparatus for cleaning showers

Publications (1)

Publication Number Publication Date
US3228611A true US3228611A (en) 1966-01-11

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ID=22954850

Family Applications (1)

Application Number Title Priority Date Filing Date
US252160A Expired - Lifetime US3228611A (en) 1963-01-17 1963-01-17 Apparatus for cleaning showers

Country Status (7)

Country Link
US (1) US3228611A (enrdf_load_stackoverflow)
AT (1) AT265845B (enrdf_load_stackoverflow)
BR (1) BR6456155D0 (enrdf_load_stackoverflow)
FI (1) FI48861C (enrdf_load_stackoverflow)
GB (1) GB986311A (enrdf_load_stackoverflow)
NO (1) NO125988B (enrdf_load_stackoverflow)
SE (1) SE327131B (enrdf_load_stackoverflow)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802449A (en) * 1973-01-05 1974-04-09 L Mulinex Drain pipe flushing device
US3921905A (en) * 1974-11-11 1975-11-25 Hawaiian Sugar Planters & 0 As Soil irrigation methods and apparatus
US4391298A (en) * 1980-12-31 1983-07-05 Exxon Production Research Co. Multiline piggable fluid swivel
US4716611A (en) * 1983-03-11 1988-01-05 Lacress Nominees Pty., Ltd. Apparatus for cleaning pipes, tubes, and the like by launching pigs
US5035256A (en) * 1988-12-20 1991-07-30 Fmc Corporation Two-way valve for fitting to the downstream end of a fluid distribution pipe adapted to be cleaned by scraping
US5113895A (en) * 1988-12-20 1992-05-19 Fmc Corporation Three way valve and distribution pipe comprising same, both adapted to be cleaned by scraping
US5351886A (en) * 1993-02-11 1994-10-04 Bull Dan F Self-cleaning shower nozzle system
US5383239A (en) * 1993-09-09 1995-01-24 Mathis; Cleo D. Self-cleaning whirlpool system
US5664731A (en) * 1992-04-11 1997-09-09 Valmet Corporation Decontamination valve for a jet pipe in a paper or board machine
US5698042A (en) * 1996-02-09 1997-12-16 Praxair Technology, Inc. Method of cleaning furnace headers
WO2004060577A1 (en) * 2002-12-16 2004-07-22 Spraying Systems Co. Spraying system with automated nozzle cleaning device
US20080164340A1 (en) * 2006-11-21 2008-07-10 Hiebert Jacob F Self-cleaning sprinkler
US20080245893A1 (en) * 2006-11-21 2008-10-09 Hiebert Jacob F Self-cleaning sprinkler
US20090121038A1 (en) * 2005-05-06 2009-05-14 Dieter Wurz Spray nozzle, spray device and method for operating a spray nozzle and a spray device
US20140145016A1 (en) * 2005-05-16 2014-05-29 Stuart Morgan Manually connected nozzle assembly

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1019013A (en) * 1911-06-08 1912-03-05 Mcnamara Thomas J Blower and shower for paper-machines.
US1613185A (en) * 1926-06-16 1927-01-04 Arthur M Mitchell Method of cleansing milking-machine units
US2177429A (en) * 1937-02-16 1939-10-24 Frank G Foster Shower pipe cleaner
US2283768A (en) * 1938-04-29 1942-05-19 Bolton John W & Sons Inc Shower pipe cleaning device
GB621367A (en) * 1947-02-22 1949-04-07 August Reiss Improvements in or relating to shower pipes
US2493120A (en) * 1945-04-03 1950-01-03 Belden H Eaton Method of internally cleaning bearings of engines
US2650003A (en) * 1948-03-08 1953-08-25 Coleman Clarence Buyer Drip arresting apparatus
US2780492A (en) * 1952-08-26 1957-02-05 Wilmer E Stine Spray manifold end closure
US2784032A (en) * 1955-09-19 1957-03-05 Ekstroems Maskinaffaer Ab Device for cleaning spray tubes
US2829005A (en) * 1954-03-01 1958-04-01 Arthur E Broughton Cushioned white water shower cleaner for paper-making machines
US2884203A (en) * 1957-04-08 1959-04-28 Frances J Broughton Spray shower assembly

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1019013A (en) * 1911-06-08 1912-03-05 Mcnamara Thomas J Blower and shower for paper-machines.
US1613185A (en) * 1926-06-16 1927-01-04 Arthur M Mitchell Method of cleansing milking-machine units
US2177429A (en) * 1937-02-16 1939-10-24 Frank G Foster Shower pipe cleaner
US2283768A (en) * 1938-04-29 1942-05-19 Bolton John W & Sons Inc Shower pipe cleaning device
US2493120A (en) * 1945-04-03 1950-01-03 Belden H Eaton Method of internally cleaning bearings of engines
GB621367A (en) * 1947-02-22 1949-04-07 August Reiss Improvements in or relating to shower pipes
US2650003A (en) * 1948-03-08 1953-08-25 Coleman Clarence Buyer Drip arresting apparatus
US2780492A (en) * 1952-08-26 1957-02-05 Wilmer E Stine Spray manifold end closure
US2829005A (en) * 1954-03-01 1958-04-01 Arthur E Broughton Cushioned white water shower cleaner for paper-making machines
US2784032A (en) * 1955-09-19 1957-03-05 Ekstroems Maskinaffaer Ab Device for cleaning spray tubes
US2884203A (en) * 1957-04-08 1959-04-28 Frances J Broughton Spray shower assembly

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802449A (en) * 1973-01-05 1974-04-09 L Mulinex Drain pipe flushing device
US3921905A (en) * 1974-11-11 1975-11-25 Hawaiian Sugar Planters & 0 As Soil irrigation methods and apparatus
US4391298A (en) * 1980-12-31 1983-07-05 Exxon Production Research Co. Multiline piggable fluid swivel
US4716611A (en) * 1983-03-11 1988-01-05 Lacress Nominees Pty., Ltd. Apparatus for cleaning pipes, tubes, and the like by launching pigs
US5035256A (en) * 1988-12-20 1991-07-30 Fmc Corporation Two-way valve for fitting to the downstream end of a fluid distribution pipe adapted to be cleaned by scraping
US5113895A (en) * 1988-12-20 1992-05-19 Fmc Corporation Three way valve and distribution pipe comprising same, both adapted to be cleaned by scraping
US5664731A (en) * 1992-04-11 1997-09-09 Valmet Corporation Decontamination valve for a jet pipe in a paper or board machine
US5351886A (en) * 1993-02-11 1994-10-04 Bull Dan F Self-cleaning shower nozzle system
US5383239A (en) * 1993-09-09 1995-01-24 Mathis; Cleo D. Self-cleaning whirlpool system
WO1995007391A1 (en) * 1993-09-09 1995-03-16 Genesis Corporation Self-cleaning whirlpool system
US5698042A (en) * 1996-02-09 1997-12-16 Praxair Technology, Inc. Method of cleaning furnace headers
WO2004060577A1 (en) * 2002-12-16 2004-07-22 Spraying Systems Co. Spraying system with automated nozzle cleaning device
US20040195353A1 (en) * 2002-12-16 2004-10-07 Spraying Systems Co. Spraying system with automated nozzle cleaning device
US7182273B2 (en) 2002-12-16 2007-02-27 Spraying Systems Co. Spraying system with automated nozzle cleaning device
US20070075156A1 (en) * 2002-12-16 2007-04-05 Spraying Systems Co. Spraying system with automated nozzle cleaning device
US20090121038A1 (en) * 2005-05-06 2009-05-14 Dieter Wurz Spray nozzle, spray device and method for operating a spray nozzle and a spray device
US8453945B2 (en) * 2005-05-06 2013-06-04 Dieter Wurz Spray nozzle, spray device and method for operating a spray nozzle and a spray device
US8985478B2 (en) 2005-05-06 2015-03-24 Dieter Wurz Spray nozzle, spray device and method for operating a spray nozzle and a spray device
US20140145016A1 (en) * 2005-05-16 2014-05-29 Stuart Morgan Manually connected nozzle assembly
US9073067B2 (en) * 2005-05-16 2015-07-07 Stuart Morgan Manually connected nozzle assembly
US20080164340A1 (en) * 2006-11-21 2008-07-10 Hiebert Jacob F Self-cleaning sprinkler
US20080245893A1 (en) * 2006-11-21 2008-10-09 Hiebert Jacob F Self-cleaning sprinkler

Also Published As

Publication number Publication date
SE327131B (enrdf_load_stackoverflow) 1970-08-10
FI48861C (fi) 1975-01-10
GB986311A (en) 1965-03-17
BR6456155D0 (pt) 1973-07-17
NO125988B (enrdf_load_stackoverflow) 1972-12-04
DE1461059A1 (de) 1969-01-16
FI48861B (enrdf_load_stackoverflow) 1974-09-30
AT265845B (de) 1968-10-25

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