US1990585A - Coating process - Google Patents

Coating process Download PDF

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Publication number
US1990585A
US1990585A US656575A US65657533A US1990585A US 1990585 A US1990585 A US 1990585A US 656575 A US656575 A US 656575A US 65657533 A US65657533 A US 65657533A US 1990585 A US1990585 A US 1990585A
Authority
US
United States
Prior art keywords
suspension
fibres
fan
fibre
coating
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
US656575A
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English (en)
Inventor
Dolbey Norman Louis
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB3617730A external-priority patent/GB368368A/en
Priority to DER83320D priority Critical patent/DE584037C/de
Priority claimed from US578084A external-priority patent/US1990584A/en
Application filed by Individual filed Critical Individual
Priority to US656575A priority patent/US1990585A/en
Application granted granted Critical
Publication of US1990585A publication Critical patent/US1990585A/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
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1409—Arrangements for supplying particulate material specially adapted for short fibres or chips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/14—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas designed for spraying particulate materials
    • B05B7/1404—Arrangements for supplying particulate material
    • B05B7/1431—Arrangements for supplying particulate material comprising means for supplying an additional liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/12—Applying particulate materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/34—Applying different liquids or other fluent materials simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/26—Bituminous materials, e.g. tar, pitch
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C04B40/0028—Aspects relating to the mixing step of the mortar preparation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/02—Implements for finishing work on buildings for applying plasticised masses to surfaces, e.g. plastering walls
    • E04F21/06—Implements for applying plaster, insulating material, or the like
    • E04F21/08—Mechanical implements
    • E04F21/12—Mechanical implements acting by gas pressure, e.g. steam pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482—Coating or impregnation materials

Definitions

  • a suspension of mineral fibres in air is first formed and then while in the form of a truesuspension is subjected to the action ofa fan which draws in the suspension at its suction side, serves to disperse the suspension further rather than to agglomerate the fibrous particles together, and directs the suspension on to the surface to be coated.
  • Simul-L taneously particles of a solid reagent are projected on to'the surface to be coated as is also a liquid reagent of such a nature as to react with the solid reagent to fdrm a material which binds the fibrous particles together and to the surface.
  • This process involves two features; First the dispersion of mineral fibrous particles in air andthe movement of the resultant suspension by subjecting it to suction action, and secondly the simultaneous spraying of ingredients which are not themselves adhesives but which exert a cementing or binding action on the fibre on arriving at the surface to be coated.
  • netted wire may be spot welded or soldered to metal surfaces or an adhesive such as emulsion of asphalt in water may be.
  • a large variety of reagents may be employed.
  • particles of Portland cement may be mixed with the fibrous materials and sprayed simultaneously with them and at the same. time water may be sprayed from a spray gun.
  • calcined magnesite may be sprayed at the same time as a solution of magnesium chloride in water.
  • powdered resin may be mixed with the fibre and sprayed simultaneously with an emulsion of a solvent in water such, for example, as a mixture of turpentine and water made in the presence of an emulsifier.
  • the proportions of the various ingredients of the coatings may vary widely. In manufactur: ing coatings resembling asbestos cement it is preferred to form a coating containing four parts of cement to one of fibre, and it is found that the most satisfactory way of forming such a coating is to spray a. suspension containing equal parts of asbestos and Portland cement'and simultaneously to spray a Portland cement wash through the gun. However all the cement and fibre may be sprayed in suspension form and the percentage of fibre may be as low as 10 or as high as 60 in accordance withv the quality of the fibre. Again, a mixture of fibre in 50% of magnesite is advantageous and in this case magnesium chloride solution of about 1.12 specific gravity may be sprayed simultaneously.
  • the fibre and powder reagent may be sprayed separately.
  • the invention is not limited to the use of powder reagents, although such a use represents the most advantageous form of the invention.
  • powder reagents may be used.
  • two separate streams of liquid reagents are sprayed simultaneously with a stream .of fibrous particles and react to form a cementing substance binding the fibres to the surface.
  • Eigure 3 shows a detail view of part of the apparatus.
  • the apparatus consists of a hopper 1 containing an endless travelling band 2 as of leather and provided with a large number of hooked prongs 3 which protrude through the band 2 and serve to pick up and hold loose fibre supplied to the hopper 1.
  • the band 2 carries the asbestos to a point above a funnel 4 formed integral with the hopper 1 and in communication at its base with the suction side of a fan 5.
  • a brush 6 arranged to rotate at a very high speed serves to detach the fibre from the band and simultaneously to open it out so that it falls in fibrous particles down the funnel 4.
  • the fan 5 also draws in any dust formed while the fibres are being opened.
  • a second brush 7 arranged to rotate at a moderate speed is placed close to the top of the band 2 so that in rotating it comes into contact with the fibre on the band and serves to control the quantity supplied to the brush 6.
  • the fan 5 should be one having relatively few blades spaced apart from one another, since it is found that a fan with a number of close-set blades does not convey the fibre satisfactorily.
  • a powdered solid reagent such as Portland cement is suppliedseparately to the suction side of the fan 5 in any suitable way such, for example, as by means of a second hopper similar to the hopper 1, and also connected to the suction side of the fan 5.
  • the fan draws in the particles of the fibre and cement suspended in air, and delivers them through a hose 8 having a nozzle 9.
  • Water is simultaneously sprayed by means of a spray gun 10 connected to the end of a hose 8 so that on arriving at the surface to be coated the water reacts with the cement and serves to bind the fibrous particles into a solid coating.
  • All the moving parts are driven by a small electric motor 11 which is connected to drive the fan 5 and the brushes 6 and 7 through belts, as shown, while the endless band 2 is driven through a belt 17 which drives a pulley 16.
  • the pulley 16 is connected by clutch mechanism to drive a hollow shaft 20 which is journalled on a fixed shaft 38 and to whicha gear wheel 37 is keyed. This wheel 3'1 is connected through further gear wheels, as shown, to drive the endless band 2.
  • the pulley 16 has a clutch lining 18 which can be pressed against a. flange 19 on the hollow shaft 20. Thelatter passes through a flange sleeve against which the end of-the bearing surface of the pulley abuts.
  • a collar 33 is fixed on-the end of the shaft and a helical spring 34 fixed at one end to the collar 33 and at the other end to the sleeve .15 surrounds the shaft 20 between the collar and the sleeve.
  • 'A strap 39 surrounds thesleeve 15 and-is connected by a Bowden wire 14 to an operating handle 13 mounted close to the end of the hose 8, as shown, or on the gun.
  • the sleeve 15 normally rotateswith the hollow shaft 20 and the pulley 16, so that when the Bowden wire 14 is pulled tight the strap acts as a brake on the sleeve 15.
  • the sleeve 15 can be rotated relatively to the hollow shaft 20 by the unwinding of the spring 34, and simultaneously the latter will expand and bring the fiange 19 into engagement with the clutch lining 18 again.
  • the supply of a liquid reagent can be shut off at the same time as the supply of fibre by means of a valve trigger 12 which is provided as usual on the spray gun 10.
  • two slowly moving agitators 21 and 22 are provided in the form of metal sheets.
  • the sheet 21 is pivoted at 23 close to the end wall of the hopper 1 and the sheet 22 is pivoted at 24 so that it lies fairly close to and approximately parallel to the endless band 2.
  • the two sheets 21 and 22 then form in effect the boundary walls of the hopper and are slowly rocked about their pivots through a small angle by a mechanism which consists of a rod 25 fixed to an eccentric 26 at one end and to a pivoted link 27 at the other end.
  • the pivot 28 of the link 2'7 is rigidly connected to an arm 29.
  • the amount of fibre supplied to the fan can, of
  • the bottom of the hopper may be enlarged or widened so as to provide ample space and thus to reduce choking or bridging of the fibre.
  • the whole apparatus may easily be made mobile by mounting it upon a frame or trolley. It thus can easily be taken to any point where it is required and has the great advantage that in general only one man is needed to operate it.
  • said water being so directed as to mingle with said fibres and said Portland cement and form with the latter an adherent coating which binds the fibres to the surface.
  • a-process for depositing on to the surface of a body acoating which includes loose fibrous material the steps which comprisefcrming a suspension of the fibres and calcined magnesite in air, then subjecting said suspension to the suction action of a fan, conveying said suspension on to the surface to be coated, and simultaneously spraying the surface with a solution of magnesium chloride in water to cause a reaction with the calcined magnesite and form an adherent coating which binds the fibres to the surface.
  • steps which comprise forming a suspension of the fibres in air, then subjecting said suspension to the suction action of a fan, conveying said suspension on to the surface to be coated, and simultaneously spraying on to said surfacetwo separate reagents capable of reacting together to form a material which binds the fibres together and to the surface.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Civil Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
US656575A 1930-12-01 1933-02-13 Coating process Expired - Lifetime US1990585A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DER83320D DE584037C (de) 1930-12-01 1931-11-12 Verfahren und Vorrichtung zum Erzeugen eines isolierenden, aus faserigen Bestandteilen und einem Bindemittel bestehenden UEberzuges
US656575A US1990585A (en) 1930-12-01 1933-02-13 Coating process

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB3617730A GB368368A (en) 1930-12-01 1930-12-01 Improvements relating to the formation of heat and sound insulating coatings
US578084A US1990584A (en) 1930-12-01 1931-11-30 Coating machine
US656575A US1990585A (en) 1930-12-01 1933-02-13 Coating process

Publications (1)

Publication Number Publication Date
US1990585A true US1990585A (en) 1935-02-12

Family

ID=27259337

Family Applications (1)

Application Number Title Priority Date Filing Date
US656575A Expired - Lifetime US1990585A (en) 1930-12-01 1933-02-13 Coating process

Country Status (2)

Country Link
US (1) US1990585A (de)
DE (1) DE584037C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563457A (en) * 1951-08-07 Method of treating asbestos fiber
US2604068A (en) * 1946-10-02 1952-07-22 J W Roberts Ltd Apparatus for damping mineral fibers to be sprayed in air
DE2635866A1 (de) * 1975-08-11 1977-02-24 Bertil Sandell Verfahren zur aufbereitung von fasern zur zumischung zu aufgespritztem beton, sowie vorrichtung zur durchfuehrung des verfahrens

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE958249C (de) * 1951-11-01 1957-02-14 Schuldt & Hiekel Lackfab Verfahren und Vorrichtung zum Aufbringen eines UEberzuges aus Isoliermaterial
DE1162098B (de) * 1962-04-18 1964-01-30 A Stankiewicz Chemische Erzeug Verfahren zur Herstellung einer Wand fuer Fahrzeuge
DE1275786B (de) * 1965-07-20 1968-08-22 Norbert Jehle Dipl Phys Verfahren zur Koerperschalldaempfung
ATA457179A (de) * 1979-06-29 1983-02-15 Otto Holler Verfahren zum beschichten von bauteilen
EP0411169A1 (de) * 1989-07-31 1991-02-06 TEPLOTECHNA PRAHA státni podnik Torkretiermaschine für fasrige Materialien
DE3927850A1 (de) * 1989-08-23 1991-02-28 Fraunhofer Ges Forschung Moertel zur versiegelung von spritzasbestzementbeschichtungen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563457A (en) * 1951-08-07 Method of treating asbestos fiber
US2604068A (en) * 1946-10-02 1952-07-22 J W Roberts Ltd Apparatus for damping mineral fibers to be sprayed in air
DE2635866A1 (de) * 1975-08-11 1977-02-24 Bertil Sandell Verfahren zur aufbereitung von fasern zur zumischung zu aufgespritztem beton, sowie vorrichtung zur durchfuehrung des verfahrens

Also Published As

Publication number Publication date
DE584037C (de) 1933-09-13

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