US20040187244A1 - Twisted tuft end brush and method of making - Google Patents
Twisted tuft end brush and method of making Download PDFInfo
- Publication number
- US20040187244A1 US20040187244A1 US10/401,475 US40147503A US2004187244A1 US 20040187244 A1 US20040187244 A1 US 20040187244A1 US 40147503 A US40147503 A US 40147503A US 2004187244 A1 US2004187244 A1 US 2004187244A1
- Authority
- US
- United States
- Prior art keywords
- cup
- set forth
- core
- knot
- knots
- 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.)
- Abandoned
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 239000007769 metal material Substances 0.000 claims 4
- 238000003825 pressing Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 20
- 206010017076 Fracture Diseases 0.000 description 6
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 208000010392 Bone Fractures Diseases 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- 208000013201 Stress fracture Diseases 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B13/00—Brushes with driven brush bodies or carriers
- A46B13/008—Disc-shaped brush bodies
-
- 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
- A46B3/14—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 street-cleaning or rail-cleaning brooms
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/30—Brushes for cleaning or polishing
- A46B2200/3093—Brush with abrasive properties, e.g. wire bristles
Abstract
Description
- This invention relates generally as indicated to a twisted tuft end brush and a method of making, and more particularly to a knot style twisted tuft wire end or cup brush having a significantly longer useful life and significantly better operating characteristics. The invention also relates to methods of making the wire knot style brush.
- Twisted tuft or knot type wire end or cup brushes are particularly effective in spot facing or cleaning, conditioning, abrading or finishing metal surfaces. They are particularly used in cleaning and de-burring operations. One good application is carbon removal on engine blocks. The twisted knot type brush is particularly aggressive in that the tips of each filament at the working face extend at a slightly different angle brought on by the twisting knot formation of each tuft. Thus each filament extends in a generally helical fashion.
- Such brushes are usually formed. by inserting a bundle of wire filaments through equally spaced peripheral holes in a retainer plate. The bundles are then folded and the then two parallel portions are twisted together to form the twisted tuft knot. The inner portion of the tuft is in the form of a loop extending through the hole.
- The retainer plate with the tufts in place is then inserted into a cup and secured in place usually by a swaged stud or pin projecting through a center hole in the plate. This assembly process causes the twisted knot-type tufts to project axially of the cup beyond its rim in an annular row around the interior of the cup. A sleeve may be inserted into the center of the cup primarily for confinement and to ensure the tufts remain parallel axially of the cup. The bottom of the cup is provided with an axially projecting arbor which may be secured to the spindle of an air or electric driven hand or bench type tool. Examples of this type of wire brushing tool are seen in U.S. Pat. Nos. 2,062,047 and 2,755,496.
- Since the filaments are most tightly bent at the inner end where they form a loop, excessive movement along the inner end of the knot may create stress fractures of the filaments creating what is known as a long fracture. In this case substantially the entire filament above or in groups may break off and come out of the tool. Even if only one filament breaks it means two are loose since each wire forms two projecting filaments. Long fractures are in contrast to much shorter fractures which occur at the tip or working face as the brush wears back in use. Long fractures not only create safety problems but significantly shorten tool life.
- Twisted tuft filament knots are generally circular in transverse section and if a sleeve or other metal type core is employed it will only engage the knot at a tangent point, and excessive localized pressure may tend to make the stress fracture problem worse.
- There is a need for a low cost twisted tuft wire filament end or cup brush which will have a significantly longer service life, and better operating characteristics.
- A twisted knot tuft wire filament end brush achieves both a longer useful life and more aggressive operating characteristics by forming a non-metallic plug or core in the center of the tool which embraces the inner ends of the knots. The core may be introduced as a putty or viscous liquid and may be pressed to conform to and embrace the inner ends of the knots. This process is facilitated by use of a retainer plate having alternating fingers and notches. Each finger includes an upturned end forming a radius corner with the knot hole extending in wrap-around fashion through the radius corner. The plug or core material preferably provides a tensile shear strength of from about 800 to about 1000 psi, a modulus of elasticity of about 6×105, a hardness on the shore D scale of about 60-90, and should maintain its stability up to 300° F. or more. One preferred material is an epoxy resin.
- To the accomplishment of the foregoing and related ends the invention, then, comprises the features hereinafter fully described and particularly pointed out in the claims, the following description and the annexed drawings setting forth in detail certain illustrative embodiments of the invention, these being indicative, however, of but a few of the various ways in which the principles of the invention may be employed.
- FIG. 1 is an exploded view of the cup and twisted wire tuft knot retainer disk of the brushing tool of the present invention, both in quarter section prior to assembly;
- FIG. 2 is a diametrical section of the tool with the knots formed and the retainer disk secured to the bottom of the cup;
- FIG. 3 is a similar section showing the putty-like core and being compressed during the manufacturing process;
- FIG. 4 is a similar section of the completed tool;
- FIG. 5 is a transaxial section through the core as seen from the line5-5 of FIG. 4 showing the configuration of the core;
- FIG. 6 is a similar section seen from line5-5 of FIG. 4 showing the core compressed to a greater extent;
- FIG. 7 is a view like FIG. 4 but showing a core applied in a viscous liquid form; and
- FIG. 8 is a transaxial section of the tool of FIG. 7 seen from the line8-8 thereof.
- Referring initially to FIG. 1 there is illustrated the
cup 10 andknot retaining disk 12 which retain and secure the twisted wire tufts in place. - The
cup 10 includes acup bottom 13 from which projects the annularperipheral cup wall 14 terminating in slightly flared lip orrim 15. The bottom is thickest at its center axis and tapers uniformly to its thinnest portion from which thecylindrical wall 14 extends. Projecting axially from the bottom of the cup in the opposite direction is stem orshank arbor 17 which may be secured by a suitable collet to the rotor of an electric or air motor driven hand tool, for example, or a similar power driven bench or table tool. In this manner the end or cup brush tool may be rotated about its axis at relatively high speeds. - Projecting from the interior of the
bottom 13 of thecup 10 is a relatively short stud shown generally at 19. This interior stud fits relatively closely withincenter hole 21 of knottuft retaining disk 12. - The
disk 12 includes a centerflat portion 22 surrounding thehole 19 and at its periphert has equally spaced up-turned projections or bent fingers shown at 23. - The fingers are each bent 90° through a radius corner shown at25 with the corner having an exterior radius larger than the thickness of the disk. Each finger includes a wrap-around
hole 26 which extends through the disk and completely through the finger curvature. Each hole has a diameter slightly wider than the curvature of the corner so that opposite sides of the hole radially of the disk are normal to each other as shown at 27 and 28. The inside of thehole 27 is parallel to the axis of the disk while the outside 28 is substantially radially spaced outwardly yet parallel to a radius of the disk and spaced axially of, or off-set from theflat portion 22 - Between the bent fingers in which the wrap-around holes are formed are disk notches shown generally at30, which provide openness and access to the inner ends or the loops of the twisted knots.
- In construction a bundle of wires shown generally at32 is threaded through the respective hole and then bent upon itself and twisted so that the individual filaments or wires spiral around each other as shown in 33. The individual tufts or knots are shown at 34. This operation forms a
loop 36 at the inner end of each tuft or knot extending through the curved retainer disk hole. - After the knots are assembled to the retaining disk, the sub-assembly of the disk and knots is placed in the bottom of the cup so that the
stud 19 extends through thecenter hole 21 of the disk. The tips of the filaments each extending in a slightly different direction from the workingface 37. To secure the disk and knot assembly in place the top of the stud may be swaged or cold formed to form a rivet cap as indicated at 38 securing the sub-assembly in the cup with the knots or tufts projecting axially of the cup in rows uniformly around but inside the rim. - Because of the finger and notch construction of the disk, the inner ends of the knots at the loops are circumferentially equally spaced from each other while the plane of the loop is radial and the axis of the loop is circumferential. At this point the knots are supported only by the cup and the retainer disk. As indicated it has been proposed to support the knots by an inner sleeve or cup which may also be secured in similar fashion to the
center stud 19. However, to achieve longer tool life and a more aggressive tool, I prefer to use a center plug orcore - Referring now to FIGS. 3-6, the core42 shown in FIG. 4 is made from a putty-like resin plug material while the core 44 shown in FIGS. 7 and 8 is made from a viscous liquid resin material.
- In all of the embodiments illustrated the preferred material for the core is a non-metallic plastic, a relatively hard elastomer, or resin material, and preferably an epoxy compound. The preferred characteristics are a tensile shear strength of from about 600 to about 1200 psi, and preferably from about 800 to about 1000 psi. It should have a modulus of elasticity of about 6×105, and a harness on the Shore D scale from about 60 to about 90, and preferably from about 70 to about 80. It should be able to withstand a use temperature of about 300° F., or more. The preferred epoxy is available in two part systems and can form intermediate mixtures in either putty or liquid form.
- Referring initially to FIGS. 3-6, if a putty form is used such as seen at42 in FIGS. 3-6, axial pressure on the core in such form may be provided by
platen 45 orplunger 46 seen in FIG. 3. By applying force in the direction of thearrow 48, pressure on the top of the core during the assembly process will cause the core material to flow or extrude between the knots and down into thenotches 30 in the disk embracing the interior of the knots within the cup. - In comparing FIGS. 5 and 6 it will be seen that the core material flows or extrudes between the knots as indicated by the
core nodes 50 in FIG. 5. Continued or increased pressure will cause those nodes to flow between the knots embracing the knots to an even greater extent as at 52 in FIG. 6. Either form of embracement of the knot within the cup acts as a significant dampener reducing fatigue long fracture of the wire filaments, and substantially increasing both the life and aggressiveness of the tool. - In FIGS. 7 and 8 the
core 44 material has been introduced in a relatively viscose liquid form and as can be seen, the core material almost completely surrounds the knot as indicated by theportion 54, and even flows through thenotch 30 to extend beneath thedisk 12 and substantially completely surrounds theloop 36, as indicated by theportion 56. - The tools seen in FIGS. 4-8 have been found to increase tool life by a factor of about two (2) and the aggressiveness of the three tool by a factor of about (3).
- Although the invention has been shown and described with respect to certain preferred embodiments, it is obvious that equivalent alternations and modifications will occur to others skilled in the art upon the reading and understanding of this specification. The present invention includes all such equivalent alterations and modifications, and is limited only by the scope of the claims.
Claims (22)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/401,475 US20040187244A1 (en) | 2003-03-26 | 2003-03-26 | Twisted tuft end brush and method of making |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/401,475 US20040187244A1 (en) | 2003-03-26 | 2003-03-26 | Twisted tuft end brush and method of making |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040187244A1 true US20040187244A1 (en) | 2004-09-30 |
Family
ID=32989463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/401,475 Abandoned US20040187244A1 (en) | 2003-03-26 | 2003-03-26 | Twisted tuft end brush and method of making |
Country Status (1)
Country | Link |
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US (1) | US20040187244A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070151055A1 (en) * | 2006-01-04 | 2007-07-05 | 766089 Alberta Ltd. | Pipeline pig brush and brush assembly |
ITPR20080053A1 (en) * | 2008-09-18 | 2010-03-19 | Stefano Torelli | INDUSTRIAL BRUSH AND PROCEDURE TO REALIZE IT |
US20100154153A1 (en) * | 2008-12-24 | 2010-06-24 | 766089 Alberta Ltd. | Pipeline pig brush |
US20110000040A1 (en) * | 2009-07-01 | 2011-01-06 | Colgate-Palmolive Company | Toothbrush Having Improved Tuft Retention and Anchor Wire |
US20120023692A1 (en) * | 2009-03-27 | 2012-02-02 | Bart Gerard Boucherie | Bristle insert, brush with such bristle insert, and method for manufacturing such bristle insert |
US9402461B2 (en) | 2014-02-21 | 2016-08-02 | Braun Gmbh | Head for an oral care implement |
Citations (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1082922A (en) * | 1913-05-17 | 1913-12-30 | Edward F Fletcher | Brush. |
US1100113A (en) * | 1912-10-01 | 1914-06-16 | Edward F Fletcher | Brush. |
US1101520A (en) * | 1913-03-15 | 1914-06-30 | Edward F Fletcher | Broom. |
US1438371A (en) * | 1920-12-29 | 1922-12-12 | Worcester Brush & Scraper Comp | Floor brush |
US1706058A (en) * | 1926-07-15 | 1929-03-19 | Henry F Ebert | Brush |
US2062047A (en) * | 1934-06-01 | 1936-11-24 | Osborn Mfg Co | Brush |
US2075907A (en) * | 1936-01-16 | 1937-04-06 | Hugh P Mcmillan | Brush |
US2290575A (en) * | 1940-10-29 | 1942-07-21 | Black & Decker Mfg Co | Wheel brush |
US2421647A (en) * | 1943-04-22 | 1947-06-03 | Osborn Mfg Co | End brush |
US2449158A (en) * | 1944-01-13 | 1948-09-14 | Osborn Mfg Co | End brush and method of making |
US2686495A (en) * | 1951-10-22 | 1954-08-17 | Paul C Hutton | Eraser |
US2755496A (en) * | 1952-06-16 | 1956-07-24 | Osborn Mfg Co | Cup brush |
US2982983A (en) * | 1957-05-22 | 1961-05-09 | Osborn Mfg Co | End brush construction |
US3007188A (en) * | 1958-01-29 | 1961-11-07 | Pittsburgh Plate Glass Co | End brush |
US3106739A (en) * | 1960-09-22 | 1963-10-15 | Osborn Mfg Co | End or cup brush and method of making |
US3237234A (en) * | 1963-07-24 | 1966-03-01 | Pittsburgh Plate Glass Co | Power driven cup brush |
US3335444A (en) * | 1966-08-15 | 1967-08-15 | Karl E Weiler | Miniature brush construction and means of stem mounting |
US3562833A (en) * | 1969-06-26 | 1971-02-16 | Sherwin Williams Co | Rotary brush |
US3585671A (en) * | 1968-09-27 | 1971-06-22 | Manufacturers Brush Co The | Rotary brush |
US3696563A (en) * | 1969-10-13 | 1972-10-10 | Rands Steve Albert | Abrasive brush having bristles with fused abrasive globules |
US3871048A (en) * | 1972-08-18 | 1975-03-18 | Leng Armac Limited | Brush |
US4408367A (en) * | 1981-04-20 | 1983-10-11 | Advance Brushes, Inc. | End brush |
US5464275A (en) * | 1992-12-11 | 1995-11-07 | Jason, Inc. | End brush and method of making |
US5755003A (en) * | 1992-12-11 | 1998-05-26 | Jason, Inc. | End brush and method of making |
-
2003
- 2003-03-26 US US10/401,475 patent/US20040187244A1/en not_active Abandoned
Patent Citations (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1100113A (en) * | 1912-10-01 | 1914-06-16 | Edward F Fletcher | Brush. |
US1101520A (en) * | 1913-03-15 | 1914-06-30 | Edward F Fletcher | Broom. |
US1082922A (en) * | 1913-05-17 | 1913-12-30 | Edward F Fletcher | Brush. |
US1438371A (en) * | 1920-12-29 | 1922-12-12 | Worcester Brush & Scraper Comp | Floor brush |
US1706058A (en) * | 1926-07-15 | 1929-03-19 | Henry F Ebert | Brush |
US2062047A (en) * | 1934-06-01 | 1936-11-24 | Osborn Mfg Co | Brush |
US2075907A (en) * | 1936-01-16 | 1937-04-06 | Hugh P Mcmillan | Brush |
US2290575A (en) * | 1940-10-29 | 1942-07-21 | Black & Decker Mfg Co | Wheel brush |
US2421647A (en) * | 1943-04-22 | 1947-06-03 | Osborn Mfg Co | End brush |
US2449158A (en) * | 1944-01-13 | 1948-09-14 | Osborn Mfg Co | End brush and method of making |
US2686495A (en) * | 1951-10-22 | 1954-08-17 | Paul C Hutton | Eraser |
US2755496A (en) * | 1952-06-16 | 1956-07-24 | Osborn Mfg Co | Cup brush |
US2982983A (en) * | 1957-05-22 | 1961-05-09 | Osborn Mfg Co | End brush construction |
US3007188A (en) * | 1958-01-29 | 1961-11-07 | Pittsburgh Plate Glass Co | End brush |
US3106739A (en) * | 1960-09-22 | 1963-10-15 | Osborn Mfg Co | End or cup brush and method of making |
US3237234A (en) * | 1963-07-24 | 1966-03-01 | Pittsburgh Plate Glass Co | Power driven cup brush |
US3335444A (en) * | 1966-08-15 | 1967-08-15 | Karl E Weiler | Miniature brush construction and means of stem mounting |
US3585671A (en) * | 1968-09-27 | 1971-06-22 | Manufacturers Brush Co The | Rotary brush |
US3562833A (en) * | 1969-06-26 | 1971-02-16 | Sherwin Williams Co | Rotary brush |
US3696563A (en) * | 1969-10-13 | 1972-10-10 | Rands Steve Albert | Abrasive brush having bristles with fused abrasive globules |
US3871048A (en) * | 1972-08-18 | 1975-03-18 | Leng Armac Limited | Brush |
US4408367A (en) * | 1981-04-20 | 1983-10-11 | Advance Brushes, Inc. | End brush |
US5464275A (en) * | 1992-12-11 | 1995-11-07 | Jason, Inc. | End brush and method of making |
US5755003A (en) * | 1992-12-11 | 1998-05-26 | Jason, Inc. | End brush and method of making |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8534768B2 (en) | 2004-06-25 | 2013-09-17 | 766089 Alberta Ltd. | Method of making a pipeline pig brush and brush assembly |
US9339854B2 (en) | 2004-06-25 | 2016-05-17 | Fiberbuilt Manufacturing Inc. | Pipeline pig brush and brush assembly |
US20110057501A1 (en) * | 2004-06-25 | 2011-03-10 | 766089 Alberta Ltd. | Pipeline pig brush and brush assembly |
US20070151055A1 (en) * | 2006-01-04 | 2007-07-05 | 766089 Alberta Ltd. | Pipeline pig brush and brush assembly |
ITPR20080053A1 (en) * | 2008-09-18 | 2010-03-19 | Stefano Torelli | INDUSTRIAL BRUSH AND PROCEDURE TO REALIZE IT |
WO2010031849A1 (en) * | 2008-09-18 | 2010-03-25 | Faber Universal, S.L. | Industrial brush and method for making such a brush |
US20100154153A1 (en) * | 2008-12-24 | 2010-06-24 | 766089 Alberta Ltd. | Pipeline pig brush |
US20120023692A1 (en) * | 2009-03-27 | 2012-02-02 | Bart Gerard Boucherie | Bristle insert, brush with such bristle insert, and method for manufacturing such bristle insert |
US10426256B2 (en) * | 2009-03-27 | 2019-10-01 | Bart Gerard Boucherie | Bristle insert, brush with such bristle insert, and method for manufacturing such bristle insert |
US8402591B2 (en) | 2009-07-01 | 2013-03-26 | Colgate-Palmolive Company | Toothbrush having improved tuft retention and anchor wire |
US8726447B2 (en) | 2009-07-01 | 2014-05-20 | Colgate-Palmolive Company | Toothbrush having improved tuft retention and anchor wire |
US20110000040A1 (en) * | 2009-07-01 | 2011-01-06 | Colgate-Palmolive Company | Toothbrush Having Improved Tuft Retention and Anchor Wire |
US9402461B2 (en) | 2014-02-21 | 2016-08-02 | Braun Gmbh | Head for an oral care implement |
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