GB2160594A - Pointing method and apparatus - Google Patents

Pointing method and apparatus Download PDF

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Publication number
GB2160594A
GB2160594A GB08514188A GB8514188A GB2160594A GB 2160594 A GB2160594 A GB 2160594A GB 08514188 A GB08514188 A GB 08514188A GB 8514188 A GB8514188 A GB 8514188A GB 2160594 A GB2160594 A GB 2160594A
Authority
GB
United Kingdom
Prior art keywords
tube
nozzle
pointing
piston
manually operable
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.)
Granted
Application number
GB08514188A
Other versions
GB8514188D0 (en
GB2160594B (en
Inventor
Richard Rooks
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
Application filed by Individual filed Critical Individual
Publication of GB8514188D0 publication Critical patent/GB8514188D0/en
Publication of GB2160594A publication Critical patent/GB2160594A/en
Application granted granted Critical
Publication of GB2160594B publication Critical patent/GB2160594B/en
Expired legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00Implements for finishing work on buildings
    • E04F21/28Implements for finishing work on buildings for glazing
    • E04F21/30Putty squeezers or guns
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/0116Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like characterised by the piston driving means
    • B05C17/012Stepwise advancing mechanism, e.g. pawl and ratchets
    • B05C17/0123Lever actuated
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00Implements for finishing work on buildings
    • E04F21/165Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00Implements for finishing work on buildings
    • E04F21/165Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers
    • E04F21/1652Implements for finishing work on buildings for finishing joints, e.g. implements for raking or filling joints, jointers for smoothing and shaping joint compound to a desired contour

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Pointing is applied to brickwork by means of apparatus which includes a tube (22) from which mortar or other pointing material is displaced by a piston (24) having sealing engagement with the internal surface of the tube. The tube terminates in a tapering nose portion (23) with a centrally aligned nozzle (23a) shaped to form the mortar into a ribbon for application directly to the crevices in the brickwork. <IMAGE>

Description

1 GB2160594A 1
SPECIFICATION
Pointing method and apparatus This invention relates to the application of pointing material such as mortar to brickwork and other similar structures in the process known as - pointing- in which mortar or a similar pointing material is applied to crevices between laid bricks, stones, etc., to fill such crevices either when a wall is originally constructed or subsequently by way of repair. It will be understood that such pointing materials comprise a wet mix of generally granu- lar matter including a cementitious binding agents.
Normally, such a pointing operation is carried out by hand using a trowel, and it is a skilled and time-consuming process.
According to the first aspect of this inven- tion, a method of pointing brickwork or other similar structure by the application of mortar or other similar pointing material is character ised in that the pointing material is contained within a tube having a tapering nose portion terminating in a nozzle and said material is displaced through said nozzle directly into crevices where pointing is required by means of a piston having sealing engagement with the internal surface of said tube.
Conveniently, the nozzle is shaped to afford a redetangular or square opening at its outlet end to form the displaced material into a ribbon of corresponding sectional shape. The piston is preferably advanced along the length of the tube by means of a manually operable plunger. The piston may incorporate a seal made of resilient material, and preferably hav ing a concave outer face so that the seal engages the tube at positions spaced axially of the tube. Most conveniently the nozzle is aligned with the axis of the tube.
The invention also resides in apparatus for performing said method, such apparatus corn prising a tube to contain a pointing material, the tube having a tapering nose portion termi nating in a nozzle through which the material can be discharged, a piston having sealing engagement with the internal surface of said tube and manually operable means for ad vancing said piston along the length of said tube towards said nozzle.
The tube is preferably supported removably in a cradle so that it can be separated from the operating means for the purpose of filling with the pointing material. The operating means may be rotatable relative to the cradle about an axis coincident with that of the tube and may include a hand grip and a lever coupled to a rod on which the piston is 125 carried.
Whilst somewhat similar types of gun are currently used for the application of mastic materials, these are not suitable for use with pointing materials due to the different natures 130 of such materials, and whilst there have been previous proposals to apply pointing materials to brickwork mechanically, none have met with commercial success.
The pointing material used may be of generally conventional type, but may be made rather wetter than is normal for applicatjion by trowelling, and to prevent shrinkage problems on drying, the mix may include an air entrain- ing agent which is compressed during passage of the material through the nozzle, and then expands to compensate for shrinkage as the material dries.
The invention will now be described further with reference to a preferred embodiment by way of example.
As indicated above, in accordance with the invention, a pointing operation is carried out by applying a pointing material, such as mor- tar, to the crevices between bricks, stones, or the like by means of a form of---gunwhereby a ribbon of such material is formed and fed directly into the crevice. This method has the advantage that the mortar can be applied more precisely, more rapidly and with less skill, than previously required. Mortar of a generally conventional type may be used, and for example, a typical mix may contain high grade Portland cement (68% to 72%), fine grade silica sand (23% to 26%), a stearate (approximately 1 %) and optional colouring material (up to about 6%) in a dry mixture. Water is added to this mixture to produce a settable mortar, and for the purposes of the invention it is preferred to make the mix wetter than would normally be used for manual application by trowelling in order to assist flowability. Typically, approximately two litres of water would be used with 25 kilogrammes of the dry mix.
To avoid shrinkage problems, the mix preferably also includes approximately 1 % of a suitable air entraining substance.
Application of the mix may be carried out by means of the apparatus illustrated in the accompanying drawing. Such apparatus resembles a conventional mastic gun in that it incorporates a cradle structure 10 for the reception of a container 13 for the pointing material, a rod 11 which extends axially of the container and carries at its forward end a piston 12 which, in use, is received within the container 13. The rod 11 is adapted to be driven along the length of the container by means of a known type of manual operating mechanism 14.
Briefly, this mechanism includes a manually operable lever 15 which is pivotally mounted on an associated hand grip 1 5a and at its upper end bears on an apertured plate 16 which is loosely assembled on the rod 11 in such a manner that it can rock against an abutment 17 and thereby grip the rod to cause it to be advanced as the lever 15 is pulled rowards the hand grip 1 5a. A return 2 GB2160594A 2 spring 18 causes the plate 16 to slide rear wardly along the rod back into contact with the abutment 17 when the lever 15 is re leased.
A second apertured plate 19 is provided, which reacts on an abutment 19a and acts in the opposite direction to plate 16 so as nor mally to prevent reverse movement of the rod 11. However, when the plate 19 is displaced manually against the action of a spring 20, the rod 11 can be retracted manually by means of the knob 21.
The container 13 comprises a cylindrical tube 22 having a tapering nose portion 23 of substantially conical form terminating in a nozzle 23a at the discharge end. The nozzle 23a is preferably shaped so as to afford a square or rectangular opening of appropriate dimensions so that the mortar is discharged as a ribbon of corresponding sectional shape.
The container 13 is loosely assembled with the cradle 10 and therefore can be removed for the purposes of filling with an appropriate quantity of the wet mix described above, the piston 12 being fully retracted for this oper ation. Operation of the mechanism 14 then advances the piston 12 into the open end of the tube. The piston 12 includes a peripheral seal 24 which is located axially between two discs 25. The seal is designed to engage the 95 interior surface of the tube and provide a fluid-tight fit. For this purpose the seal 24 is made of a suitable resilient material and pre ferably affords a somewhat concave peripheral outer surface 26 whereby it engages the tube 22 at axially spaced positions and therefore acts as a double seal. Additionally, the seal 24 effectively acts as a scraper as it moves in either direction, thereby ensuring that the in- practice to use a piston which engages the tube in a fluid-tight manner.
In the gun as illustrated, the cradle structure 10 includes end members 27 and 28 interconnected by three straps 29. The end member 27 carries the operating mechanism 14 preferably in such a manner that it can be rotated about an axis coincident with the rod 11. This enables the nozzle 23a to be set at an appropriate angle to suit the user and ensure that the sides of the rectangular section ribbon of mortar which is extruded through the nozzle register correctly with the edges of the crevice into which the ribbon is introduced, regardless of the angle at which the gun is held by the operator. However, it will be appreciated that in some cases the cradle might not be rotatable in order to simplify construction, and indeed instead of using a container which is loosely assembled with a cradle, it might alternatively be possible to assemble the operating mechanism directly with the open end of the container. Such an arrangement would be particularly suitable for use with containers which are supplied filled with a quantity of wet mix, readly for use.
Whilst, in the illustrated embodiment, the nozzle 23a and nose portion 23 are formed as part of the container 13, it would alternatively be possible for the cylinder 22 to be formed separately from the nose portion and nozzle, which could then comprise a separate assembly carried by or forming part of the cradle 10. As can be seen, the nozzle 23a is aligned with the axis of the cylinder 22 and disposed centrally relative to the conical nose portion 23. The sides of the conical nose portin preferably taper at an inclined angle ner surface of the tube is maitained in a clean 105 relative to the axis of the cylinder which is and smooth condition despite the nature of the mortar mix.
It is particularly important that the piston 12 should engage sealingly with the inner surface of the tube 22, partly to prevent water 110 being squeezed out of the wet mix when pressure is applied, and draining away past the piston, and thereby altering the consis tency of the mix, and partly to enable hydro- static pressure to be applied throughout the bulk of the material to enhance flowability.
Further, due to the particulate nature of the mix, it is highly desirable for the seal 24 to have a wiping action to prevent solids accu mulating on the interior wall of the tube in 120 such a manner that the seal could be locally distorted and allow water to escape.
It will be appreciated that such considera tions are quite different from those which arise in the application of mastic materials by 125 generally similar apparatus. Such mastics ma terials are, of course, of a generally sticky nature and tend to form a substantially coher ent body, so that problems of the kind men tioned above do not arise, and it is not the between about 30 and 45'.
Further, whilst the illustrated gun is manually operated by a known mechanism, it will be appreciated that the rod 11 may be driven by any suitable means, whether manual or mechanised. Additionally, the container 13 may be provided with interchangeable nozzles 23 having different outlet dimensions to suit different applications, or a range of interchan- geable containers may be provided, each with a different outlet nozzle. Likewise, the gun may be produced in a range of different sizes adapted for holding varying quantities of morta r.
The features disclosed in the foregoing description, or the accompanying drawing, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, may, separately or in any combination of such features, be utilised for realising the invention in diverse forms thereof.

Claims (11)

  1. 3 GB2160594A 3 1. A method of pointing brickwork or othwer similar structure by the application of mortar or other similar pointing material wherein the pointing material is contained within a tube having a tapering nose portion terminating in a nozzle and said material is displaced through said nozzle directly into crevices where pointing is required by means of a piston having sealing engagement with the internal surface of said tube.
  2. 2. A method according to claim 1 wherein the material is shaped by said nozzle into a rectangular or square section ribbon.
  3. 3. A method according to Claim 1 or Claim 2 wherein the material incorporates an air entraining substance which is compressed by passage of the material through said nozzle and subsequently expands to compensate for shrinkage as the material dries.
  4. 4. A method according to any one of Claims 1 to 3 wherein the nozzle is aligned with the axis of said tube.
  5. 5. A method according to any one of Claims 1 to 4 wherein said piston incorporates a seal made of resilient material, and having a concave outer face so that the seal engages the tube at positions spaced axially of the tube.
  6. 6. Apparatus for performing the method according to any one of the preceding claims and comprising a tube to contain a pointing material the tube having a tapering nose portion terminating in a nozzle through which the material can be discharged, a piston having sealing engagement with the internal surface of said tube and manually operable means for advancing said piston along the length of said tube towards said nozzle.
  7. 7. Apparatus according to Claim 6 wherein said manually operable means is carried by a cradle structure and said tube is releasably assembled with said cradle structure for the purpose of filling with the pointing material.
  8. 8. Apparatus according to Claim 7 wherein manually operable means is mounted on the cradle in such a manner as to enable it to be rotated relative to the cradle structure about an axis coincident with that of the tube assembed with the cradle structure.
  9. 9. Apparatus according to any one of Claims 6 to 8 wherein said manually operable means includes a hand grip and a lever coup led to a rod on which said piston is carried.
  10. 10. Apparatus according to any one of Claims 6 to 9 wherein said piston incorporates a seal made of resilient material and is shaped to afford a concave annular outer face which engages the tube at positions spaced axially thereof.
  11. 11. Any novel feature or novel combination of features disclosed herein and/or as shown in the accompanying drawing.
    Printed in the United Kingdom for Her Majesty's Stationery Office, Dd 8818935, 1985, 4235. Published at The Patent Office, 25 Southampton Buildings, London, WC2A lAY, from which copies may be obtained.
GB08514188A 1984-06-05 1985-06-05 Pointing method and apparatus Expired GB2160594B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB848414337A GB8414337D0 (en) 1984-06-05 1984-06-05 Pointing

Publications (3)

Publication Number Publication Date
GB8514188D0 GB8514188D0 (en) 1985-07-10
GB2160594A true GB2160594A (en) 1985-12-24
GB2160594B GB2160594B (en) 1988-01-13

Family

ID=10561956

Family Applications (2)

Application Number Title Priority Date Filing Date
GB848414337A Pending GB8414337D0 (en) 1984-06-05 1984-06-05 Pointing
GB08514188A Expired GB2160594B (en) 1984-06-05 1985-06-05 Pointing method and apparatus

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB848414337A Pending GB8414337D0 (en) 1984-06-05 1984-06-05 Pointing

Country Status (2)

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EP (1) EP0165008A3 (en)
GB (2) GB8414337D0 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224782A (en) * 1988-11-10 1990-05-16 John Milton Beirne Placement of cement mortar
GB2247049A (en) * 1990-05-25 1992-02-19 Whiterock Prod Ltd Sealant gun.
GB2260561A (en) * 1991-10-08 1993-04-21 Richard Ivan Whittle Device for use in pointing brickwork
GB2328240A (en) * 1997-07-24 1999-02-17 Barry Vic Oliver Apparatus for application of building materials
GB2333128A (en) * 1997-06-26 1999-07-14 Desmond Charles Drummond Dispensing gun trigger arrangement

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2724703A1 (en) * 1994-09-20 1996-03-22 Clairval Tool for separating poles on awnings
GB2381016A (en) * 2001-10-20 2003-04-23 Kwok Pun Chan A brick and brick laying tools
KR20030063978A (en) * 2002-01-25 2003-07-31 김병기 A Mortar Injection Device
EP1607142A1 (en) * 2004-06-14 2005-12-21 Sika Technology AG Device for dispensing a material
ITMO20060197A1 (en) * 2006-06-16 2007-12-17 Kemac S P A INJECTOR FOR VISCOUS FLUIDS
CN111691651A (en) * 2018-10-25 2020-09-22 杭州富阳飞尚装饰工程有限公司 Supporting type floor gap filling aid
CN110629989A (en) * 2019-10-09 2019-12-31 广东博智林机器人有限公司 Discharging assembly and gap filling device
CN111155746B (en) * 2020-01-06 2021-06-29 广东巨子建筑有限公司 Joint filling and seam beautifying integrated building decoration construction method after pavement of floor tiles
CN111997208A (en) * 2020-08-21 2020-11-27 河南东方建设集团发展有限公司 Wall body coupling joint rubber coating device for assembly type building construction

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB528576A (en) *
GB263419A (en) * 1926-07-29 1926-12-30 Robert John Milbourne A tool or appliance for use in repairing gas retorts, furnaces, or other brickwork
GB703780A (en) * 1951-06-15 1954-02-10 Secomastic Ltd Improvements in or relating to extrusion devices
GB905049A (en) * 1957-09-27 1962-09-05 B B Chem Co Ltd Improvements in or relating to portable extrusion devices
GB1133988A (en) * 1964-12-21 1968-11-20 Gen Electric Plunger for cartridge-containers
GB1428009A (en) * 1973-12-11 1976-03-17 Masonry Syst Int Method and apparatus for dispensing flowable highdensity material
GB2076473A (en) * 1980-05-23 1981-12-02 So Shun Extruder for food mixtures
EP0108584A1 (en) * 1982-11-05 1984-05-16 Dentsply Limited Syringes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2630006A (en) * 1948-09-28 1953-03-03 Leach Joseph Mortar gun for pointing joints in walls, etc.
DE822158C (en) * 1948-12-25 1951-11-22 Willy Messerschmitt Dr Ing Method and device for filling joints in buildings
US3537621A (en) * 1968-08-09 1970-11-03 Walter A Jesse Mortar gun and disc therefor
US3726440A (en) * 1970-12-21 1973-04-10 Speed Caulking Inc Caulking gun

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB528576A (en) *
GB263419A (en) * 1926-07-29 1926-12-30 Robert John Milbourne A tool or appliance for use in repairing gas retorts, furnaces, or other brickwork
GB703780A (en) * 1951-06-15 1954-02-10 Secomastic Ltd Improvements in or relating to extrusion devices
GB905049A (en) * 1957-09-27 1962-09-05 B B Chem Co Ltd Improvements in or relating to portable extrusion devices
GB1133988A (en) * 1964-12-21 1968-11-20 Gen Electric Plunger for cartridge-containers
GB1428009A (en) * 1973-12-11 1976-03-17 Masonry Syst Int Method and apparatus for dispensing flowable highdensity material
GB2076473A (en) * 1980-05-23 1981-12-02 So Shun Extruder for food mixtures
EP0108584A1 (en) * 1982-11-05 1984-05-16 Dentsply Limited Syringes

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224782A (en) * 1988-11-10 1990-05-16 John Milton Beirne Placement of cement mortar
GB2247049A (en) * 1990-05-25 1992-02-19 Whiterock Prod Ltd Sealant gun.
GB2247049B (en) * 1990-05-25 1993-12-22 Whiterock Prod Ltd Sealant gun
GB2260561A (en) * 1991-10-08 1993-04-21 Richard Ivan Whittle Device for use in pointing brickwork
GB2260561B (en) * 1991-10-08 1994-08-17 Richard Ivan Whittle Device for use in pointing brickwork
GB2333128A (en) * 1997-06-26 1999-07-14 Desmond Charles Drummond Dispensing gun trigger arrangement
GB2328240A (en) * 1997-07-24 1999-02-17 Barry Vic Oliver Apparatus for application of building materials
GB2328240B (en) * 1997-07-24 2002-01-23 Barry Vic Oliver Application of building materials

Also Published As

Publication number Publication date
EP0165008A2 (en) 1985-12-18
GB8414337D0 (en) 1984-07-11
GB8514188D0 (en) 1985-07-10
GB2160594B (en) 1988-01-13
EP0165008A3 (en) 1987-05-27

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930605