US2793080A - Nozzle for spraying cementitious materials - Google Patents

Nozzle for spraying cementitious materials Download PDF

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Publication number
US2793080A
US2793080A US283092A US28309252A US2793080A US 2793080 A US2793080 A US 2793080A US 283092 A US283092 A US 283092A US 28309252 A US28309252 A US 28309252A US 2793080 A US2793080 A US 2793080A
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nozzle
annular
axially
outer end
flexible
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US283092A
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Warren G Brown
Warren D Brown
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    • 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
    • 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
    • B05B7/1481—Spray pistols or apparatus for discharging particulate material
    • B05B7/1486—Spray pistols or apparatus for discharging particulate material for spraying particulate material in dry state

Definitions

  • the present invention relates to an improved apparatus for preparing and spraying ceme'ntitiousmaterials suitable both for the weatherproofing, waterproofing and restoration of existing masonry and for the construction of new concrete structures.
  • Another object of the invention is to provide an apparatus of the type indicated above, including a spray gun having an improved adjustable nozzle which is simple in design, economical of construction and reliable and efficient in operation.
  • a further object of the invention is to provide an apparatus of the type indicated above, including an improved nozzle adapted to receive and spray a thick mixture of liquid and solid materials.
  • Figure 1 is an elevational view showing a nozzle constructed according to the present invention mounted on an associated hose;
  • Figure 2 is a broken and enlarged sectional view of the apparatus illustrated in Figure 1, taken substantially along the line 2-2 thereof.
  • the spray gun nozzle 338 comprises a body 344 externally threaded at its outer end and internally threaded at its inner end and mounted on the outer end of the spray gun 328 by an annular element 346 externally threaded for engagement with the threaded inner end of the nozzle body 344.
  • the annular element 346 encircles the outer end portion of a metal reinforcing tube 348 housing the flexible valve sleeve element 350, through which the cement grout is supplied and cooperates with the reinforcing tube 348 to define an annular air chamber 352.
  • the air line 340 is connected at its outer end to the element 346 and communicates with the chamber 352.
  • a circle nozzle plate 354 carried in the nozzle body 344 fits over the outer end of the rubber sleeve 350, which in the construction illustrated terminates in an outwardly turned flange portion 356 having a plurality of axially extending apertures 358 communicating with the annular air chamber 352.
  • the nozzle plate 354 has an inwardly projecting central portion 360 which fits Within the rubber sleeve 350 and defines a conical central opening 362 therethrough.
  • the outer marginal portion of the nozzle plate 354 is provided with a plurality of equally angularly spaced radially inwardly inclined openings 364 registering at one end with the openings 358, and each adapted to direct a jet of air from States Patent 2,793,080 Patented May 21, 1957' the air chamber 352 at a predetermined point on the axis on the nozzle body 344 axially outwardly of the plate 354.
  • the nozzle body 344 also carries a flexible annular rubber element 366 and an annular orifice controlling? member 368 internally threaded for engagement with the: externally threaded outer end portion of the nozzle body 344.
  • the member 368 may be moved axially of the nozzle body 344 by means of its threaded engagement with the nozzle body, and upon such axial movement relative to the nozzle body is effective, as hereinafter described, to vary the size of the orifice definedby the flexible element 366.
  • the flexible element 366 At its inner end, has an outwardly extending annular flange 370- gripped between a cooperating.
  • the flexible orifice element 366 in its: free or undistorted condition, has an inner cylindrical surface 374 defining the desiredimaximum orifice opening and extending from a point axially inwardly of the shoulder 372 to the outer end of the element 366.
  • the radially outer sur face of the element 366 is shaped toprovide an annular radially outwardly extending projection 376 adapted to engage the shoulder 372, a sealing flange portion 378 at the outer end of the element 366, and an intermediate radially outwardly extending annular portion 380 which, upon compression axially, cooperates in varying the size of the orifice defined by the element 366.
  • the sealing flange 378 extends radially and axially outwardly.
  • the flange 378 is engaged by an annular element 382 carried by the member 368 and deformed to the position illustrated in Fig. 9 in which it provides a seal preventing the cementitious material from getting into the space between the element 366, the member 368 and nozzle body 344.
  • the element 382 has an inclined inner surface 384 cooperating with the shoulder 372 upon movement of the member 368 axially inwardly to deform the inner surface of the element 366 to some position such as that illustrated in broken lines in Figure 2, thereby reducing the orifice size.
  • the element 382 is adapted to move into the outer end of the nozzle body 344 upon movement of the member 368 axially inwardly from the position of maximum orifice opening illustrated in Fig. 2. Also, the annular element 382 has an axially inwardly extending flange 386 at its radially outer edge which presses the outer portion of the projection 380 into the outer end of the nozzle body 344 and cooperates in deforming the element 366 radially inwardly.
  • any suitable airline system may be provided for supplying the desired air pressures to the line 330 leading to the spray gun 328.
  • a pressure of 60 pounds per square inch in the line 330 gives good results.
  • An adjustable nozzle comprising a body having an opening therethrough, a flexible member mounted in said opening and having a discharge passage therethrough, an operating member mounted on said body for movement axially of said passage between a first and a second position, the minimum cross-sectional area of said passage being a predetermined desired maximum when said operating member is in said first position, and means effective upon movement of said operating member to said second position to reduce the minimum cross-sectional area of said passage to a predetermined desired minimum, said flexible member in its free condition having a radially inner wall portion adjacent its axially outer end defining a passage portion of substantially uniform cross-sectional area and a radially outer surface including a conical flange extending axially and radially outwardly from the outer end of said flexible member and adapted to be deformed axially inwardly during assembly of said nozzle to provide an annular seal between said flexible member and said operating member.
  • An adjustable nozzle comprising a body having an opening therethrough, a flexible member mounted in said opening, said flexible member having a discharge passage therethrough, an operating member mounted on said body for movement axially of said passage between a first position and a second position, the minimum cross-sectional area of said passage being a predetermined desired maximum when said operating member is in said first position and means including an annular element engaging said operating member and eflective upon movement of said operating member to said second position to reduce the minimum cross-sectional area of said passage to a predetermined desired minimum, said flexible member having an outer surface portion engaging said body to limit radially outwardly movement of said surface portion of said flexible member when said operating member is in said first position, said flexible member having an annular radially outwardly extending projection, said flexible member also having a conical flange which in its free condition normally extends axially and radially outwardly from the outer end of said flexible member, said annular member when in assembled relation with said operating member engaging said conical flange and deforming it axially in

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nozzles (AREA)

Description

May 21, I957 w. e. BRowN ETAL 2,793,080
NOZZLE FOR SPRAY INC CEMENTITIOUS MATERIALS Original.Filed March 19, 1949 370 35 370 360 364 INVENTORX ATTORNEYS NOZZLE FOR SPRAYING CEMENTITIOUS MATERIALS Warren G. Brown and Warren D. Brown, Detroit, Mich.
2 Claims. (Cl. 299-134) The present application is a divisional application of our copending application for patent, Serial No. 82,404, filed March 19; 1949, now United States Letters Patent No. 2,603,462, granted July 15, 1952, said application being a continuation-in-part of our application, Serial No. 514,042, filed December 13, 1943, which was abandoned March 30, 1949.
The present invention relates to an improved apparatus for preparing and spraying ceme'ntitiousmaterials suitable both for the weatherproofing, waterproofing and restoration of existing masonry and for the construction of new concrete structures.
Another object of the invention is to provide an apparatus of the type indicated above, including a spray gun having an improved adjustable nozzle which is simple in design, economical of construction and reliable and efficient in operation.
A further object of the invention is to provide an apparatus of the type indicated above, including an improved nozzle adapted to receive and spray a thick mixture of liquid and solid materials.
Other objects of the invention will become apparent from the following specifications, from the drawings relating thereto, and from the claims hereinafter set forth.
For a better understanding of the invention, reference may be had to the drawings wherein:
Figure 1 is an elevational view showing a nozzle constructed according to the present invention mounted on an associated hose; and,
Figure 2 is a broken and enlarged sectional view of the apparatus illustrated in Figure 1, taken substantially along the line 2-2 thereof.
Referring to the drawing, the spray gun nozzle 338 comprises a body 344 externally threaded at its outer end and internally threaded at its inner end and mounted on the outer end of the spray gun 328 by an annular element 346 externally threaded for engagement with the threaded inner end of the nozzle body 344. The annular element 346 encircles the outer end portion of a metal reinforcing tube 348 housing the flexible valve sleeve element 350, through which the cement grout is supplied and cooperates with the reinforcing tube 348 to define an annular air chamber 352. The air line 340 is connected at its outer end to the element 346 and communicates with the chamber 352. A circle nozzle plate 354 carried in the nozzle body 344 fits over the outer end of the rubber sleeve 350, which in the construction illustrated terminates in an outwardly turned flange portion 356 having a plurality of axially extending apertures 358 communicating with the annular air chamber 352. The nozzle plate 354 has an inwardly projecting central portion 360 which fits Within the rubber sleeve 350 and defines a conical central opening 362 therethrough. The outer marginal portion of the nozzle plate 354 is provided with a plurality of equally angularly spaced radially inwardly inclined openings 364 registering at one end with the openings 358, and each adapted to direct a jet of air from States Patent 2,793,080 Patented May 21, 1957' the air chamber 352 at a predetermined point on the axis on the nozzle body 344 axially outwardly of the plate 354.
The nozzle body 344 also carries a flexible annular rubber element 366 and an annular orifice controlling? member 368 internally threaded for engagement with the: externally threaded outer end portion of the nozzle body 344. The member 368 may be moved axially of the nozzle body 344 by means of its threaded engagement with the nozzle body, and upon such axial movement relative to the nozzle body is effective, as hereinafter described, to vary the size of the orifice definedby the flexible element 366. At its inner end, the flexible element 366 has an outwardly extending annular flange 370- gripped between a cooperating. shoulder on the nozzle body 344 andan outer'marginalportion of the inner face" of the nozzle plate 354, outwardly of the openings 364. Spaced inwardly from its outer end the body 344 has an annular inwardly extending projection defining an outwardly presenting annular shoulder 372.
The flexible orifice element 366, in its: free or undistorted condition, has an inner cylindrical surface 374 defining the desiredimaximum orifice opening and extending from a point axially inwardly of the shoulder 372 to the outer end of the element 366. The radially outer sur face of the element 366 is shaped toprovide an annular radially outwardly extending projection 376 adapted to engage the shoulder 372, a sealing flange portion 378 at the outer end of the element 366, and an intermediate radially outwardly extending annular portion 380 which, upon compression axially, cooperates in varying the size of the orifice defined by the element 366. In the normal or free condition of the element 366, the sealing flange 378 extends radially and axially outwardly. Upon assembly of the nozzle 338, the flange 378 is engaged by an annular element 382 carried by the member 368 and deformed to the position illustrated in Fig. 9 in which it provides a seal preventing the cementitious material from getting into the space between the element 366, the member 368 and nozzle body 344. The element 382 has an inclined inner surface 384 cooperating with the shoulder 372 upon movement of the member 368 axially inwardly to deform the inner surface of the element 366 to some position such as that illustrated in broken lines in Figure 2, thereby reducing the orifice size. The element 382 is adapted to move into the outer end of the nozzle body 344 upon movement of the member 368 axially inwardly from the position of maximum orifice opening illustrated in Fig. 2. Also, the annular element 382 has an axially inwardly extending flange 386 at its radially outer edge which presses the outer portion of the projection 380 into the outer end of the nozzle body 344 and cooperates in deforming the element 366 radially inwardly.
It will be appreciated that any suitable airline system may be provided for supplying the desired air pressures to the line 330 leading to the spray gun 328. As an instance of a satisfactory pressure in the line 330 for operating the spray gun 328 for the spraying of cement grout, it has been found that a pressure of 60 pounds per square inch in the line 330 gives good results.
While only one specific embodiment of the invention has been illustrated and described in detail, it will be readily appreciated by those skilled in the art that various modifications and changes may be made without departing from the spirit of the present invention.
What is claimed is:
1. An adjustable nozzle comprising a body having an opening therethrough, a flexible member mounted in said opening and having a discharge passage therethrough, an operating member mounted on said body for movement axially of said passage between a first and a second position, the minimum cross-sectional area of said passage being a predetermined desired maximum when said operating member is in said first position, and means effective upon movement of said operating member to said second position to reduce the minimum cross-sectional area of said passage to a predetermined desired minimum, said flexible member in its free condition having a radially inner wall portion adjacent its axially outer end defining a passage portion of substantially uniform cross-sectional area and a radially outer surface including a conical flange extending axially and radially outwardly from the outer end of said flexible member and adapted to be deformed axially inwardly during assembly of said nozzle to provide an annular seal between said flexible member and said operating member.
2. An adjustable nozzle comprising a body having an opening therethrough, a flexible member mounted in said opening, said flexible member having a discharge passage therethrough, an operating member mounted on said body for movement axially of said passage between a first position and a second position, the minimum cross-sectional area of said passage being a predetermined desired maximum when said operating member is in said first position and means including an annular element engaging said operating member and eflective upon movement of said operating member to said second position to reduce the minimum cross-sectional area of said passage to a predetermined desired minimum, said flexible member having an outer surface portion engaging said body to limit radially outwardly movement of said surface portion of said flexible member when said operating member is in said first position, said flexible member having an annular radially outwardly extending projection, said flexible member also having a conical flange which in its free condition normally extends axially and radially outwardly from the outer end of said flexible member, said annular member when in assembled relation with said operating member engaging said conical flange and deforming it axially inwardly to provide an annular seal between said flexible member and said operating member and engaging said projection during movement of said operating member from said first position to said second position to deform said projection and deform said flexible member to efiect said reduction of the minimum cross-sectional area of said passage.
References Cited in the file of this patent UNITED STATES PATENTS 208,330 Palmer Sept. 24, 1878 221,349 Palmer Nov. 4, 1879 1,657,663 Devereux Jan. 31, 1928 2,437,042 Prosser et a1. Mar. 2, 1948 2,543,517 Anderson Feb. 27, 1951 2,564,896 Gustafsson Aug. 21, 1951 2,577,664 Pro Dec. 4, 1951 2,671,692 Matirko Mar. 9, 1954 FOREIGN PATENTS 11,067 Netherlands May 15, 1924
US283092A 1949-03-19 1952-04-18 Nozzle for spraying cementitious materials Expired - Lifetime US2793080A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978866A (en) * 1957-09-30 1961-04-11 Curtiss Wright Corp Adjustable nozzle for rocket
US3020640A (en) * 1958-10-14 1962-02-13 Graham Phillip Graphic machine
US3352333A (en) * 1965-03-31 1967-11-14 Carrier Corp Spray gun for cleaning tubes having radially expansible means for sealingly engagingsaid tube
US3788557A (en) * 1970-02-02 1974-01-29 Spirolet Corp Liquid injection adaptor
US4589454A (en) * 1985-03-11 1986-05-20 Champion International Corporation Valve bag filling conduit
US5850974A (en) * 1996-05-02 1998-12-22 Grafotec Gmbh Device to produce an adjustable fluid jet

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US208330A (en) * 1878-09-24 Improvement in hose-nozzles
US221349A (en) * 1879-11-04 Improvement in adjustable nozzles for hose
NL11067C (en) * 1900-01-01
US1657663A (en) * 1926-01-08 1928-01-31 Francis C Devereux Valve
US2437042A (en) * 1944-05-29 1948-03-02 Illinois Clay Products Co Material projecting apparatus
US2543517A (en) * 1947-06-09 1951-02-27 Jo Zach Miller Iii Apparatus for combining and emplacing cementitious substances
US2564896A (en) * 1946-06-17 1951-08-21 Binks Mfg Co Sound deadening gun
US2577664A (en) * 1950-03-20 1951-12-04 Jo Zach Miller Discharge nozzle for hydrating cementitious substances under pressure
US2671692A (en) * 1950-09-30 1954-03-09 Basic Refractories Inc Nozzle construction

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US208330A (en) * 1878-09-24 Improvement in hose-nozzles
US221349A (en) * 1879-11-04 Improvement in adjustable nozzles for hose
NL11067C (en) * 1900-01-01
US1657663A (en) * 1926-01-08 1928-01-31 Francis C Devereux Valve
US2437042A (en) * 1944-05-29 1948-03-02 Illinois Clay Products Co Material projecting apparatus
US2564896A (en) * 1946-06-17 1951-08-21 Binks Mfg Co Sound deadening gun
US2543517A (en) * 1947-06-09 1951-02-27 Jo Zach Miller Iii Apparatus for combining and emplacing cementitious substances
US2577664A (en) * 1950-03-20 1951-12-04 Jo Zach Miller Discharge nozzle for hydrating cementitious substances under pressure
US2671692A (en) * 1950-09-30 1954-03-09 Basic Refractories Inc Nozzle construction

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2978866A (en) * 1957-09-30 1961-04-11 Curtiss Wright Corp Adjustable nozzle for rocket
US3020640A (en) * 1958-10-14 1962-02-13 Graham Phillip Graphic machine
US3352333A (en) * 1965-03-31 1967-11-14 Carrier Corp Spray gun for cleaning tubes having radially expansible means for sealingly engagingsaid tube
US3788557A (en) * 1970-02-02 1974-01-29 Spirolet Corp Liquid injection adaptor
US4589454A (en) * 1985-03-11 1986-05-20 Champion International Corporation Valve bag filling conduit
US5850974A (en) * 1996-05-02 1998-12-22 Grafotec Gmbh Device to produce an adjustable fluid jet

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