US3871048A - Brush - Google Patents

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Publication number
US3871048A
US3871048A US388917A US38891773A US3871048A US 3871048 A US3871048 A US 3871048A US 388917 A US388917 A US 388917A US 38891773 A US38891773 A US 38891773A US 3871048 A US3871048 A US 3871048A
Authority
US
United States
Prior art keywords
sheath
filaments
core
bundle
brush
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
US388917A
Other languages
English (en)
Inventor
Monty Leigh
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.)
LENG ARMAC Ltd
Original Assignee
LENG ARMAC Ltd
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 LENG ARMAC Ltd filed Critical LENG ARMAC Ltd
Application granted granted Critical
Publication of US3871048A publication Critical patent/US3871048A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/08—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by clamping
    • A46B3/10—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by clamping into rings or the like
    • A46B3/12—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by clamping into rings or the like specially adapted for paint-brushes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S15/00—Brushing, scrubbing, and general cleaning
    • Y10S15/04—Ferrules
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core

Definitions

  • ABSTRACT A brush is formed by a bundle of straight parallel extruded plastic filaments which project from one end portion of an extruded plastic sheath, the portion of the bundle within the sheath completely surrounding a wedge.
  • the sheath is attached to a handle, and the filament bundle is suitably of generally rectangular cross-section, to produce a flat brush.
  • the brush is made by continuously extruding a rope consisting of straight parallel filaments of a plastic material in a bundle around a continuously advanced core which is easily sectionable. Continuously extruded around the core and filament bundle is a sheath of plastic material. The rope is sectioned into predetermined lengths, and part of the sheath is stripped from each length to expose the filaments. The filament ends are anchored to the sheath and to one another, and the core is severed' adjacent the mouth of the sheath, which is attached to the handle. The handle may instead be formed by shaping the end of the sheath remote from the filaments.
  • the core is formed with locally weakened portions extending transversely of the length of the extruded rope, to facilitate severing of the core.
  • Conventionally brushes have been manufactured by fastening the bristles into a metal ferrule attached to a wooden or plastic brush handle.
  • Such brushes are of limited usefulness, however, in the larger sizes commonly in use.
  • larger brushes have a hollow construction, in that a block of material (referred to in the art as a plug or wedge, although not necessarily wedge-shaped) is driven into the centre ofthe group of bristles within the ferrule.
  • the present invention is intended to provide an improved method of manufacturing brushes by means of a continuous extrusion process and with which larger sized brushes can be produced without the attendent disadvantages of unwedged construction.
  • the invention provides a brush head formed by a bundle of straight parallel extruded plastic filaments which project from one portion of an extruded plastic sheath, the portion of the bundle within the sheath surrounding a wedge.
  • the invention also includes a brush comprising a brush head as defined in the preceding paragraph, the sheath being attached to a brush handle.
  • the filament bundle is suitably of generally rectangular cross-section, to produce a flat brush or brush head.
  • the invention provides a method of making a brush head, comprising the steps of: continuously extruding a rope consisting of straight parallel filaments of a plastic material in a bundle around a continuously advanced core which is easily sectionable; continuously extruding around the core and filament bundle a sheath of plastic material; sectioning the rope into predetermined lengths; stripping away part of the sheath from each length to expose the filaments; anchoring the filament ends to the sheath and to one another; and severing the core adjacent the mouth of the sheath.
  • the filament bundle is suitably of generally rectangular cross-section to provide a flat brush head.
  • the core is preferably formed with locally weakened portions extending transversely of the length of the rope.
  • the unstripped portion of the sheath on each length may be displaced away from the exposed filaments to leave an open-ended hollow space within the sheath, before the filament ends inside the sheath are bonded together and to the sheath.
  • a brush handle may then be inserted into the open end of the sheath and the sheath fastened to the handle.
  • the invention also includes a method as defined in the preceding paragraph but three, in which longitudinally-extending ribs are formed by the extrusion process on the inside surface of the sheath and/or the outside surface of the core, the ribs extending into the filament bundle to locate the filaments.
  • FIG. 1 is a cross-section through a continuously extruded rope used in the manufacture of a brush
  • FIG. 2 is a side view of a length cut from the rope
  • FIG. 3 shows the rope section after stripping away a portion of the sheath
  • FIG. 4 shows the next step in the manufacture of the brush
  • FIG. 5 shows a side elevation of the finished brush
  • FIG. 6 is a side view of a core of the rope forming a wedge in the finished brush
  • FIG. 7 is a cross-section through a continuously extruded rope used in the manufacture of a brush
  • FIG. 8 is a cross-section through an alternative form of rope.
  • FIG. 9 schematically shows one method of weakening'the core of the rope at regular intervals.
  • a continuously extruded rope consists of straight parallel plastic filaments l in the form of a bundle of generally rectangular cross-section around a core 2 also of generally rectangular crosssection.
  • a plastic sheath 3 is extruded over the filament bundle l.
  • the core 2 has the form shown in side elevation in FIG. 6, and is continuously advanced at the speed of extrusion of the filaments 1 and sheath 3.
  • the extruded rope is sectioned into predetermined lengths, one of which is shown in side elevation in FIG. 2.
  • the sheath 3 is then stripped away from part of each section to expose the filaments l, as shown in FIG. 3.
  • the filaments will tend to splay lightly as shown in the Figure.
  • the remaining portion of the sheath 3 is then bodily displaced on the filaments l, away from their exposed ends.
  • An open-ended hollow space 4 is thus formed within the sheath 3, as shown in dashed outline in FIG. 4.
  • the core 2 is shown in chain-dotted outline in FIG. 4.
  • the filament ends inside the sheath 3 are then bonded together and to the sheath, suitably by fusing.
  • the core 2 is then severed adjacent the mouth of the sheath from which the filaments 1 project, to form a wedge 5 shown in dashed outline in FIG. 5.
  • the core has the form shown in FIG. 6.
  • the core has locally weakened portions extending transversely of the length of the extruded rope, in the form of portions 6 of reduced cross-section at regular intervals along the length of the core.
  • the core is suitably of a brittle foamed or otherwise easily severed material, and the appropriate choice of material may make the reduced cross-section portions unnecessary.
  • the material for the core is preferably chosen so that the broken-off portions can be re-used to make further core lengths, rather than being discarded and thus wasted.
  • the final stage in the construction of the brush is to I insert a brush handle 7 into the open end of the sheath 3, as shown in FIG. 5, and to attach the sheath to the handle. This may be done in a conventional manner, by means of staples or pins for example or merely glued.
  • a continuously extruded rope consists of straight parallel plastic filaments 1 in the form of a bundle of generally rectangular cross-section around a core 2 also of generally rectangular crosssection.
  • a plastic sheath 3 is extruded over the filament bundle l, and has longitudinally-extending ribs 14 formed by the extrusion process on its inside surface.
  • the ribs 14 extend into the filament bundle to locate the filaments thereof, to compensate for any tendency the filaments may have to migrate around the bundle cross-section on leaving the extrusion head.
  • the ribs 14 may be of other cross-sections so as to provide a toothed appearance for example.
  • the alternative form of rope shown in FIG. 8 also has straight parallel plastics filaments l in the form of a bundle of generally rectangular cross-section around a core 2 also of generally rectangular cross-section with a plastic sheath 3-extruded over the filament bundle l, but in this case longitudinally-extending ribs are formed on the outside surface of the core 2, by the extrusion process.
  • the ribs 15 have the same function as the ribs 14 shown in H6. 7.
  • ribs may be provided on the inside surface of the sheath and on the outside surface of the core, but this will not generally be necessary, and ribs on one element or the other will usually suffice.
  • the ribs are readily produced by appropriately shaping the outlet orifice of the extrusion die.
  • the core 2 must'be easily sectionable, so that unwanted portions of it in the finished brushes can be broken off.
  • FIG. 9 shows one method of achieving a similar periodic weakening of the core when it is provided with longitudinal ribs.
  • the core 2 with ribs 15 leaves the extrusion head 16 and passes between rollers 17 and 18 each of which carries radially-extending knives 19.
  • rollers 17 and 18 rotate in synchronism at such a rate that the peripheral speed of the tips of theblades 19 is substantially equal to the speed of advance of the core 2.
  • the synchronism of the rollers 17 and 18 is such that blades come to-gether two-by-two, as clearly shown in FIG. 9, so as to cut through the major part of the core cross-section. Successive cuts in the core are made by successive pairs of blades, which progressively come into contact with the core as the rollers rotate. With the core advancing from left to right as seen in the Figure the upper roller 17 rotates anti-clockwise and the lower roller 18 clockwise.
  • FIG. 9 is diagrammatic, and that the shape of the blades 19 may need to be triangular or of some other suitable form to facilitate carrying out the process.
  • an integral handle consisting of an appropriately would be stripped away to expose the filaments and the core broken off to form a wedge in the manner just described.
  • the other end of the rope length would then be formed into a handle, perhaps by some form of induction heating and pressing operation.
  • the filaments used for the brush bristles may be of polypropylene, polyester or other suitable plastic material, as may the sheath.
  • the core may be of a plastics material, but must be chosen so that it can be easily severed to produce the wedge.
  • the brush will not be affected by most of the commonly used solvents, and appropriate plastic materials will be inert to acids at ordinary temperatures.
  • the brush will not be effectedby alkalis, bleaching agents,'oils or greases, and will be suitable-for use with a wide variety of polishes, glues, inks, adhesives, paints,
  • varnishes lacquers, paints, derusting agents, oven cleaners, penetrating oils, acids and so on.
  • a brush head formed by an extruded plastic sheath, a bundle of straight parallel extruded plastic filaments which project from one end portion of said extruded plastics sheath, and a wedge, the portion of the bundle within the sheath completely surrounding said wedge.
  • a method of making a brush head comprising the steps of: continuously extruding a rope consisting of straight parallel filaments of a plastic material in a bundle around a continuously advanced core which is easily sectionable; continuously extruding around said core and said filament bundle a sheath of plastic material; sectioning said rope into predetermined lengths; stripping away part of said sheath from each length to expose said filaments; anchoring the ends of said filaments to said sheath and to one another; and severing said core adjacent the mouth of said sheath.
  • a method of making a brush by:
  • a method of making a brush by:
  • a method of making a brush by:
  • a brush comprising a brush head formed by an extruded plastic sheath, a bundle of straight parallel extruded plastic filaments which project from one end portion of said extruded plastics sheath, and a wedge, the portion of the bundle within the sheath surrounding said wedge, attached to a handle.

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  • Brushes (AREA)
US388917A 1972-08-18 1973-08-16 Brush Expired - Lifetime US3871048A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB3875772 1972-08-18
GB4741272 1972-10-13
GB2764573*[A GB1435084A (en) 1972-08-18 1973-06-11 Brush

Publications (1)

Publication Number Publication Date
US3871048A true US3871048A (en) 1975-03-18

Family

ID=27258637

Family Applications (1)

Application Number Title Priority Date Filing Date
US388917A Expired - Lifetime US3871048A (en) 1972-08-18 1973-08-16 Brush

Country Status (6)

Country Link
US (1) US3871048A (xx)
DE (1) DE2341278A1 (xx)
FR (1) FR2208622B3 (xx)
GB (1) GB1435084A (xx)
IT (1) IT997286B (xx)
NL (1) NL7311288A (xx)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010510A (en) * 1976-03-12 1977-03-08 Belza George S Paint brush and the like
US4253213A (en) * 1979-03-05 1981-03-03 The Wooster Brush Company Paint brush
US5027864A (en) * 1985-05-21 1991-07-02 Arnco Corporation Tubular apparatus for transmission cable
US5087153A (en) * 1989-08-23 1992-02-11 Arnco Corporation Internally spiraled duct and method of installation
US5540873A (en) * 1993-09-04 1996-07-30 Pedex & Co. Gmbh Process of making plastic bristles
US5755003A (en) * 1992-12-11 1998-05-26 Jason, Inc. End brush and method of making
US6371568B1 (en) * 1999-06-11 2002-04-16 Hamilton Acord Limited Brush head manufacture
US20020109396A1 (en) * 2001-02-13 2002-08-15 Boucherie Bart Gerard Method for manufacturing brushes and device for cutting brush fibers used thereby
US20040187244A1 (en) * 2003-03-26 2004-09-30 Giertz Norman Paul Twisted tuft end brush and method of making
US20060242779A1 (en) * 2005-04-28 2006-11-02 Accurate Wire, Inc. Brush with stapled tufts
US20090217471A1 (en) * 2008-01-31 2009-09-03 Innovation Factory, Inc. Brush Assembly
US20140140753A1 (en) * 2011-07-18 2014-05-22 Valspar Sourcing, Inc. Paint brush and manufacturing method
SE2050363A1 (en) * 2020-03-31 2021-09-14 Orkla House Care Ab Paint brush with a cassette collar with inward extending parts

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3139099A1 (fr) 2022-08-29 2024-03-01 Psa Automobiles Sa Procédé d'activation de fonctions de contrôle de couple d'un moteur thermique suivant une plage d'ouverture d'un dispositif d'embrayage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1103515A (en) * 1913-04-05 1914-07-14 Sylvester B Husch Tooth-brush.
US1616858A (en) * 1925-01-16 1927-02-08 Hanlon & Goodman Co Brush
US2581561A (en) * 1947-06-24 1952-01-08 Shaw Gilbert Filament package and method of producing same
US3266624A (en) * 1963-07-17 1966-08-16 Polymers Inc Brush fiber package
US3820850A (en) * 1972-11-24 1974-06-28 Baker Brush Co Inc Brush construction and method of making the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1103515A (en) * 1913-04-05 1914-07-14 Sylvester B Husch Tooth-brush.
US1616858A (en) * 1925-01-16 1927-02-08 Hanlon & Goodman Co Brush
US2581561A (en) * 1947-06-24 1952-01-08 Shaw Gilbert Filament package and method of producing same
US3266624A (en) * 1963-07-17 1966-08-16 Polymers Inc Brush fiber package
US3820850A (en) * 1972-11-24 1974-06-28 Baker Brush Co Inc Brush construction and method of making the same

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010510A (en) * 1976-03-12 1977-03-08 Belza George S Paint brush and the like
US4253213A (en) * 1979-03-05 1981-03-03 The Wooster Brush Company Paint brush
US5027864A (en) * 1985-05-21 1991-07-02 Arnco Corporation Tubular apparatus for transmission cable
US5087153A (en) * 1989-08-23 1992-02-11 Arnco Corporation Internally spiraled duct and method of installation
US5755003A (en) * 1992-12-11 1998-05-26 Jason, Inc. End brush and method of making
US5540873A (en) * 1993-09-04 1996-07-30 Pedex & Co. Gmbh Process of making plastic bristles
US6371568B1 (en) * 1999-06-11 2002-04-16 Hamilton Acord Limited Brush head manufacture
US20020109396A1 (en) * 2001-02-13 2002-08-15 Boucherie Bart Gerard Method for manufacturing brushes and device for cutting brush fibers used thereby
US6837548B2 (en) * 2001-02-13 2005-01-04 Firma G.B. Boucherie, Naamloze Vennootschap Method for manufacturing brushes and device for cutting brush fibers used thereby
US20040187244A1 (en) * 2003-03-26 2004-09-30 Giertz Norman Paul Twisted tuft end brush and method of making
US20060242779A1 (en) * 2005-04-28 2006-11-02 Accurate Wire, Inc. Brush with stapled tufts
US20090217471A1 (en) * 2008-01-31 2009-09-03 Innovation Factory, Inc. Brush Assembly
US8225451B2 (en) 2008-01-31 2012-07-24 Innovation Factory, Inc. Brush assembly
US20140140753A1 (en) * 2011-07-18 2014-05-22 Valspar Sourcing, Inc. Paint brush and manufacturing method
US9526325B2 (en) * 2011-07-18 2016-12-27 Valspar Sourcing, Inc. Paint brush and manufacturing method
US20180325253A1 (en) * 2011-07-18 2018-11-15 The Sherwin-Williams Company Paint brush and manufacturing method
US10736411B2 (en) * 2011-07-18 2020-08-11 The Sherwin-Williams Company Paint brush and manufacturing method
SE2050363A1 (en) * 2020-03-31 2021-09-14 Orkla House Care Ab Paint brush with a cassette collar with inward extending parts
SE543897C2 (en) * 2020-03-31 2021-09-14 Orkla House Care Ab Paint brush with a cassette collar with inward extending parts
WO2021201743A1 (en) * 2020-03-31 2021-10-07 Orkla House Care Ab Paint brush with a cassette collar with inward extending parts

Also Published As

Publication number Publication date
FR2208622B3 (xx) 1976-07-30
IT997286B (it) 1975-12-30
GB1435084A (en) 1976-05-12
DE2341278A1 (de) 1974-02-28
NL7311288A (xx) 1974-02-20
FR2208622A1 (xx) 1974-06-28

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