WO1985002523A1 - Drip guard for paint brushes - Google Patents

Drip guard for paint brushes Download PDF

Info

Publication number
WO1985002523A1
WO1985002523A1 PCT/AU1984/000251 AU8400251W WO8502523A1 WO 1985002523 A1 WO1985002523 A1 WO 1985002523A1 AU 8400251 W AU8400251 W AU 8400251W WO 8502523 A1 WO8502523 A1 WO 8502523A1
Authority
WO
WIPO (PCT)
Prior art keywords
collar
brush
paint
handle
paint brush
Prior art date
Application number
PCT/AU1984/000251
Other languages
French (fr)
Inventor
Owen Roy Cormack
James Henry Keane
Original Assignee
Cormack Owen
James Henry Keane
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 Cormack Owen, James Henry Keane filed Critical Cormack Owen
Priority to GB08518757A priority Critical patent/GB2161069B/en
Priority to KR1019850700153A priority patent/KR850700105A/en
Priority to NL8420303A priority patent/NL8420303A/en
Publication of WO1985002523A1 publication Critical patent/WO1985002523A1/en
Priority to DK358185A priority patent/DK358185D0/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B17/00—Accessories for brushes
    • A46B17/08—Other accessories, e.g. scrapers, rubber buffers for preventing damage to furniture
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B2200/00—Brushes characterized by their functions, uses or applications
    • A46B2200/20—Brushes for applying products to surfaces in general
    • A46B2200/202—Applicator paint brush

Definitions

  • This invention relates to improvements in and relating to paint brushes.
  • Paint brushes are usually made from a bundle of material generally referred to as "bristles".
  • the bristles may be of animal, vegetable or synthetic origin and this material is bound together by a band or with binding material.
  • the band is frequently metal and is usually referred to as a "ferrule".
  • the ferrule may be round, oval or rectangular with rounded ends depending on the shape of the handle.
  • the handle may be inserted through the centre of the bundle of bristles or is inserted in the open end of the ferrule and held there by clinching the ferrule or by glueing or by pinning or nailing the ferrule to the handle.
  • the side and edge faces of the bristles are substantially planar with the outer surface of the ferrule and even after a relatively short period of time of over-shoulder height painting there is a tendancy for the paint to accumulate in the bristles in the handle end of the brush and to run over the ferrule and along the handle.
  • brushes are usually only partially loaded with paint in an attempt to obviate run-over. This reduces the paint load of the brush and significantly slows the speed of painting as it is necessary to increase the number of loadings which are required if the paint brush is not fully loaded.
  • the invention has therefore been devised to provide a paint brush with an attachment which overcomes the aforementioned problems.
  • the invention according to one aspect comprises a paint brush comprising a handle with a bundle of bristles secured by one end to said handle and extending therefrom, said brush having a collar of elastomeric absorbant material with an interconnected partly closed cell .structure positioned on the outer surface of the handle and surrounding said handle with an edge of said collar in communication with the bristles at said one end.
  • the invention according to another aspect comprises a paint brush collar, said collar being formed of elastomeric absorbant material with an interconnected partly closed cell structure.
  • Fig. 1 is a front elevation of a brush with a collar positioned thereon;
  • Fig. 2 is a side elevation of the brush and collar illustrated in Fig. 1;
  • Fig. 3 is a section on line III-III of Fig. 1;
  • Fig. 4 is a perspective view of the brush and collar
  • Fig. 5 is a perspective view of the collar.
  • the brush comprises a bundle of bristles 1 which are held together by a band or ferrule 2.
  • a handle 3 is inserted in the open end of the ferrule 2 and fixed thereto by nails or pins 4 and 5. Alternatively the handle may be secured in position by clinching or by adhesives.
  • the ferrule 2 is pressed in the course of manufacture to form a number of beads thereon. In the embodiment being described there are three beads 6, 7 and 8. These beads strengthen the ferrule and also play an important part in the guiding of the ferrule or brush head in automatic brush making and brush-finishing machines.
  • the bead dimensions and locations on the ferrule tend to be standard throughout the brush making in ⁇ ustry for rectangular type ferrules.
  • a collar 9 of an elastomeric absorbant material is attached to or held on the outer surface of the ferrule 2 preferably so that its bottom 10 is in communication with the bottom outer surface of the bristles as illustrated.
  • the collar 7 which forms a reservoir holding the paint for later use.
  • the collar 7 also stops the paint from flowing over the ferrule 2 and running down the handle, wetting the hand of the user or falling on the surface beneath that being painted in over the shoulder painting operations.
  • the collar may be held in position by glueing or by a retaining band but the preferred method with brushes which are made with ferrules as described is to stretch the collar around the brush so that it is held in position on the ferrule 2 by the elasticity of the collar itself.
  • the selection of the materials to form the collar is an important consideration and experiments conducted by the applicant have established that it should have the following characteristics: i) it be formed of an elastomeric material having an interconnected partly closed cell structure; ii) it have sufficient elasticity so that for any given size of brush it has the ability to be stretched and remain on the handle of the brush to which it is fitted without fatigue and without tearing and without substantial distortion of the shape of its cells to the extent where its ability to readily absorb paint is inhibited; and iii) it retain sufficient pressure on the handle to prevent paint from flowing between the interface of said handle with said collar.
  • a suitable foam material for forming the collar of the invention is one having the following characteristics: Density (Kg/m 2 ) 31;
  • the collar 2 is formed of polyester polyurethane foam material having an interconnected partially closed cell structure with a count of 55 to 60 cells per 25mm.
  • a cell formation having these characteristics will allow paint of a viscosity lower than 1000 centrepoises and preferably between 150 to 600 centrepoises to migrate through the cells in preference to breaking through the surface tension of the paint of the surface of a paint loaded collar.
  • Collars of different shapes can be used but the preferred shape is circular as shown in the embodiment illustrated. Circular collars are much easier to position on the brush.
  • the volume of foam in the collar is between 200% and 300% of the width of the bristles forming the brush.
  • a collar having these characteristics will comply with the collar requirements as outlined herein.
  • the collar 9 is positioned on the brush handle so that approximately 7mm of the collar covers the bristles nearest the ferrule 2 with the remainder of the collar seated on the ferrule.
  • the collar is designed to form a well or reservoir and in its stretched condition on the ferrule the outer edge 11 of the side wall 12 overlies the inner edge 13 of the side wall 14 thereby forming a funnel type recess as illustrated adjacent the bristles.
  • the collar provides a liquid reservoir which when the brush is loaded stores paint and the surface tension of the paint film on the surface of the cells on the side wall 12 forms a skin imparting sufficient pressure on the paint stored within the cells to normally retain the paint in the collar and the funnel type recess 14 guides any paint on the surface of the bristles into the collar 9 when the brush is held in an above the shoulder manner.
  • the brush Before use the brush is immersed to a distance of about half way up the collar in a suitable solvent eg. water in the case of water based paints and mineral turps in the case of oil based paints. Excess solvent is removed from the collar by squeezing the collar and shaking the excess solvent from the brush. This step conditions the brush and the collar to readily receive the paint.
  • the brush is then dipped into the paint almost to the bristle end of the collar and * when the brush is inverted su h as- for example when painting above the shoulder height paint from the bristles gradually flows into the collar which as indicated acts as a reservoir and continued painting action sets up a pumping action by the ' bristles will draw this paint from the collar thereby minimising the number of loadings required.

Abstract

The drip guard comprises a collar (9) of elastomeric absorbent material which is positioned on the ferrule (2) on a paint bush handle. The edge of the collar being in communication with the outer surface of the bristles (1). The collar permits the brush to be correctly loaded with paint and minimises the likelihood of paint drops falling from the brush in over the shoulder height painting.

Description

This invention relates to improvements in and relating to paint brushes.
Paint brushes are usually made from a bundle of material generally referred to as "bristles". The bristles may be of animal, vegetable or synthetic origin and this material is bound together by a band or with binding material. The band is frequently metal and is usually referred to as a "ferrule". The ferrule may be round, oval or rectangular with rounded ends depending on the shape of the handle. The handle may be inserted through the centre of the bundle of bristles or is inserted in the open end of the ferrule and held there by clinching the ferrule or by glueing or by pinning or nailing the ferrule to the handle.
The side and edge faces of the bristles are substantially planar with the outer surface of the ferrule and even after a relatively short period of time of over-shoulder height painting there is a tendancy for the paint to accumulate in the bristles in the handle end of the brush and to run over the ferrule and along the handle. There has in consequence been a need for a painter to exercise care in loading a brush with paint so as not to cause the paint to protrude over the line of the brush ferrule. As a result brushes are usually only partially loaded with paint in an attempt to obviate run-over. This reduces the paint load of the brush and significantly slows the speed of painting as it is necessary to increase the number of loadings which are required if the paint brush is not fully loaded. With brushes made with short length bristles the control of the amount of paint in the brush becomes very difficult. This type of brush makes painting difficult, slows the speed of painting and even with a great deal of care there is a considerable tendancy in over-shoulder height painting for the paint to run onto the handle of the brush, the painter's hand and arm and in many cases fall on the surface below that being painted.
The invention has therefore been devised to provide a paint brush with an attachment which overcomes the aforementioned problems.
The invention according to one aspect comprises a paint brush comprising a handle with a bundle of bristles secured by one end to said handle and extending therefrom, said brush having a collar of elastomeric absorbant material with an interconnected partly closed cell .structure positioned on the outer surface of the handle and surrounding said handle with an edge of said collar in communication with the bristles at said one end. The invention according to another aspect comprises a paint brush collar, said collar being formed of elastomeric absorbant material with an interconnected partly closed cell structure.
An embodiment of the invention will now be described with reference to the accompanying drawings in which:
Fig. 1 is a front elevation of a brush with a collar positioned thereon;
Fig. 2 is a side elevation of the brush and collar illustrated in Fig. 1;
Fig. 3 is a section on line III-III of Fig. 1;
Fig. 4 is a perspective view of the brush and collar; an
Fig. 5 is a perspective view of the collar. The brush comprises a bundle of bristles 1 which are held together by a band or ferrule 2. A handle 3 is inserted in the open end of the ferrule 2 and fixed thereto by nails or pins 4 and 5. Alternatively the handle may be secured in position by clinching or by adhesives. The ferrule 2 is pressed in the course of manufacture to form a number of beads thereon. In the embodiment being described there are three beads 6, 7 and 8. These beads strengthen the ferrule and also play an important part in the guiding of the ferrule or brush head in automatic brush making and brush-finishing machines. The bead dimensions and locations on the ferrule tend to be standard throughout the brush making inαustry for rectangular type ferrules.
According to the invention a collar 9 of an elastomeric absorbant material is attached to or held on the outer surface of the ferrule 2 preferably so that its bottom 10 is in communication with the bottom outer surface of the bristles as illustrated.
As the brush is used paint flows along the bristles 1 and accumulates in the area adjacent the ferrule 2 and is held in this position by the collar 7 which forms a reservoir holding the paint for later use. The collar 7 also stops the paint from flowing over the ferrule 2 and running down the handle, wetting the hand of the user or falling on the surface beneath that being painted in over the shoulder painting operations.
The collar may be held in position by glueing or by a retaining band but the preferred method with brushes which are made with ferrules as described is to stretch the collar around the brush so that it is held in position on the ferrule 2 by the elasticity of the collar itself.
The selection of the materials to form the collar is an important consideration and experiments conducted by the applicant have established that it should have the following characteristics: i) it be formed of an elastomeric material having an interconnected partly closed cell structure; ii) it have sufficient elasticity so that for any given size of brush it has the ability to be stretched and remain on the handle of the brush to which it is fitted without fatigue and without tearing and without substantial distortion of the shape of its cells to the extent where its ability to readily absorb paint is inhibited; and iii) it retain sufficient pressure on the handle to prevent paint from flowing between the interface of said handle with said collar.
A suitable foam material for forming the collar of the invention is one having the following characteristics: Density (Kg/m2) 31;
Tear resistance (N/m) min 400;
Tensile strength (kPa) min 130;
Elongation (%) min 200; and
_ OMPI Cell count (per 25mm) 60 + 10.
Preferably the collar 2 is formed of polyester polyurethane foam material having an interconnected partially closed cell structure with a count of 55 to 60 cells per 25mm. A cell formation having these characteristics will allow paint of a viscosity lower than 1000 centrepoises and preferably between 150 to 600 centrepoises to migrate through the cells in preference to breaking through the surface tension of the paint of the surface of a paint loaded collar. Collars of different shapes can be used but the preferred shape is circular as shown in the embodiment illustrated. Circular collars are much easier to position on the brush.
In the preferred form of the invention the volume of foam in the collar is between 200% and 300% of the width of the bristles forming the brush. A collar having these characteristics will comply with the collar requirements as outlined herein.
The collar 9 is positioned on the brush handle so that approximately 7mm of the collar covers the bristles nearest the ferrule 2 with the remainder of the collar seated on the ferrule. The collar is designed to form a well or reservoir and in its stretched condition on the ferrule the outer edge 11 of the side wall 12 overlies the inner edge 13 of the side wall 14 thereby forming a funnel type recess as illustrated adjacent the bristles.
As indicated the collar provides a liquid reservoir which when the brush is loaded stores paint and the surface tension of the paint film on the surface of the cells on the side wall 12 forms a skin imparting sufficient pressure on the paint stored within the cells to normally retain the paint in the collar and the funnel type recess 14 guides any paint on the surface of the bristles into the collar 9 when the brush is held in an above the shoulder manner.
Before use the brush is immersed to a distance of about half way up the collar in a suitable solvent eg. water in the case of water based paints and mineral turps in the case of oil based paints. Excess solvent is removed from the collar by squeezing the collar and shaking the excess solvent from the brush. This step conditions the brush and the collar to readily receive the paint. The brush is then dipped into the paint almost to the bristle end of the collar and* when the brush is inverted su h as- for example when painting above the shoulder height paint from the bristles gradually flows into the collar which as indicated acts as a reservoir and continued painting action sets up a pumping action by the ' bristles will draw this paint from the collar thereby minimising the number of loadings required. This has the effect of speeding up painting operations and as the surfaces of the paint in the collar remote from the bristles do not alow paint within the collar to flow from the back of the collar and consequently spattering caused by paint dripping from the handle of the brush is prevented.
The invention has been described with reference to a rectangular oval ended shaped brush. It will be appreciated however that the principles of the invention can be applied to brushes of all shapes.
O PI

Claims

1. A paint brush comprising a handle with a bundle of bristles secured by one end to said handle and extending therefrom, said brush having a collar of elastomeric absorbant material with an interconnected partly closed cell structure positioned on the outer surface of the handle and surrounding said handle with an edge of said collar in communication with the bristles at said one end.
2. A paint brush as claimed in claim 1, wherein said collar has sufficient elasticity so that for any given size of brush it has the ability to be stretched over and remain on the handle of the brush without fatigue, without tearing and without substantial distortion of the shape of its cells.
3. A paint brush as claimed in claim 1, wherein the collar retains sufficient pressure on the handle to prevent paint from falling between the interface of said handle with said collar.
4. A paint brush as claimed in claim 1, wherein said collar is of circular configuration.
5. A paint brush as claimed in any one of claims 1 to 4, wherein the collar is positioned on the brush handle so that approximately 7M of the collar covers the bristles nearest the handle with the remainder of the collar positioned on the handle.
6. A paint brush as claimed in any one of claims 1 to 5, wherein the end of the collar adjacent the bristles forms a funnel with said bristles to direct any paint on the surface of said bristles into said collar.
OMPI
7. A paint brush collar, said collar being formed of elastomeric absorbant material with an interconnected partly closed cell structure.
8. A paint brush collar as claimed in claim 7, wherein said collar has sufficient elasticity so that for any given size of brush it has the ability to remain on the brush handle without fatigue, without tearing and without substantial distortion of the shape of its cells.
9. A paint brush collar as claimed in claim 7 or 8, wherein said material has the following characteristics:
Density (Kg/m2) 31; Tear resistance (N/m) min 400; Tensile strength (kPa) min 130; Elongation (%) min 200; and Cell count .(per 25mm) 60 + 10.
10. A paint brush collar as claimed in claim 9, wherein said collar is formed of a polyester - polyurethane foam material having a cell count of 55 to 60 cells per 25mm.
11. A paint brush collar as claimed in claim 10, wherein the cell formation is such as to allow paint of a viscosity of lower than 1000 centrepoises to migrate into said collar.
12. A paint brush collar as claimed in claim 11, wherein the cell formation is such as to allow paint of a viscosity of between 150 to 600 centrepoises to migrate into said collar.
13. A paint brush collar as claimed in any one of claims 7 to 12, wherein said collar is of circular configuration.
14. A paint brush substantially as hereinbefore described with reference to Figs. 1 to 4 of the accompanying drawings.
15. A paint brush collar as hereinbefore described with reference to Fig. 5 of the accompanying drawings.
OMPI
PCT/AU1984/000251 1983-12-06 1984-12-05 Drip guard for paint brushes WO1985002523A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB08518757A GB2161069B (en) 1983-12-06 1984-12-05 Drip guard for paint brushes
KR1019850700153A KR850700105A (en) 1983-12-06 1984-12-05 Drip stopper for paintbrush
NL8420303A NL8420303A (en) 1983-12-06 1984-12-05 DRIP PROTECTION FOR PAINT BRUSHES.
DK358185A DK358185D0 (en) 1983-12-06 1985-08-06 DROP PROTECTION FOR PAINT BRUSHES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPG2718 1983-12-06
AUPG271883 1983-12-06

Publications (1)

Publication Number Publication Date
WO1985002523A1 true WO1985002523A1 (en) 1985-06-20

Family

ID=3770432

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1984/000251 WO1985002523A1 (en) 1983-12-06 1984-12-05 Drip guard for paint brushes

Country Status (12)

Country Link
KR (1) KR850700105A (en)
BE (1) BE901220A (en)
DE (1) DE3490586T1 (en)
FR (1) FR2555875A1 (en)
GB (1) GB2161069B (en)
IT (2) IT8436277V0 (en)
NL (1) NL8420303A (en)
NZ (1) NZ210255A (en)
PT (1) PT79573B (en)
SE (1) SE448202B (en)
WO (1) WO1985002523A1 (en)
ZA (1) ZA849355B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353466A (en) * 1999-08-21 2001-02-28 Alan James Shone Non-drip paintbrush attachment
WO2010097567A1 (en) * 2009-02-25 2010-09-02 Christopher John Lee Paint brush ferrule with attachments
US8250701B1 (en) 2004-03-09 2012-08-28 Ladd Forsline Appliances for art and craft media and the like

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1455656A (en) * 1922-04-18 1923-05-15 Phillips Elaine Hale Shaving brush
FR652890A (en) * 1928-04-16 1929-03-14 Rubber sponge ring for beard brushes
US1864059A (en) * 1932-03-15 1932-06-21 Superset Brush Co Inc Self-sealing one-piece drip collector
US2199154A (en) * 1939-06-15 1940-04-30 Frohnert Gustav Paint brush attachment
DE811703C (en) * 1950-03-09 1951-08-23 Bruno Marquart Drip catcher for brushes, especially shaving brushes
US4155139A (en) * 1978-02-22 1979-05-22 Corcoran Theodore P Paint brush with disposable applicator element
US4299006A (en) * 1980-02-19 1981-11-10 Cruz Miguel M Elastic drip guard for paint brushes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1906157A (en) * 1932-06-22 1933-04-25 Jerousek Frank Drip catcher for paint brushes and the like
AT152139B (en) * 1936-04-08 1937-12-27 Oskar Dr Irschik Protective ring that can be attached to the shaving brush.
GB943736A (en) * 1962-10-31 1963-12-04 John Christopher Leslie Philli Improvements in apparatus for painting or coating surfaces with brushes by hand or otherwise
US3214778A (en) * 1963-05-23 1965-11-02 Robert V Mathison Paint applicators and kits
FR1579503A (en) * 1968-01-30 1969-08-29
DE1808788A1 (en) * 1968-11-14 1970-06-04 Wilhelm Sauer brush

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1455656A (en) * 1922-04-18 1923-05-15 Phillips Elaine Hale Shaving brush
FR652890A (en) * 1928-04-16 1929-03-14 Rubber sponge ring for beard brushes
US1864059A (en) * 1932-03-15 1932-06-21 Superset Brush Co Inc Self-sealing one-piece drip collector
US2199154A (en) * 1939-06-15 1940-04-30 Frohnert Gustav Paint brush attachment
DE811703C (en) * 1950-03-09 1951-08-23 Bruno Marquart Drip catcher for brushes, especially shaving brushes
US4155139A (en) * 1978-02-22 1979-05-22 Corcoran Theodore P Paint brush with disposable applicator element
US4299006A (en) * 1980-02-19 1981-11-10 Cruz Miguel M Elastic drip guard for paint brushes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2353466A (en) * 1999-08-21 2001-02-28 Alan James Shone Non-drip paintbrush attachment
US8250701B1 (en) 2004-03-09 2012-08-28 Ladd Forsline Appliances for art and craft media and the like
WO2010097567A1 (en) * 2009-02-25 2010-09-02 Christopher John Lee Paint brush ferrule with attachments

Also Published As

Publication number Publication date
IT8449247A0 (en) 1984-12-04
KR850700105A (en) 1985-10-25
SE448202B (en) 1987-02-02
BE901220A (en) 1985-03-29
ZA849355B (en) 1985-07-31
GB2161069A (en) 1986-01-08
GB2161069B (en) 1987-03-25
IT8436277V0 (en) 1984-12-04
DE3490586T1 (en) 1986-04-03
SE8503699L (en) 1985-08-05
PT79573B (en) 1986-08-28
NL8420303A (en) 1985-11-01
FR2555875A1 (en) 1985-06-07
PT79573A (en) 1984-12-01
GB8518757D0 (en) 1985-08-29
SE8503699D0 (en) 1985-08-05
NZ210255A (en) 1988-04-29

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