US3451173A - Abrasive element for finishing paint brushes or the like - Google Patents
Abrasive element for finishing paint brushes or the like Download PDFInfo
- Publication number
- US3451173A US3451173A US528122A US3451173DA US3451173A US 3451173 A US3451173 A US 3451173A US 528122 A US528122 A US 528122A US 3451173D A US3451173D A US 3451173DA US 3451173 A US3451173 A US 3451173A
- Authority
- US
- United States
- Prior art keywords
- brush
- bristles
- disc
- finishing
- abrasive
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/16—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding sharp-pointed workpieces, e.g. needles, pens, fish hooks, tweezers or record player styli
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D9/00—Machines for finishing brushes
- A46D9/02—Cutting; Trimming
-
- 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
- Y10S451/00—Abrading
- Y10S451/916—Abrading of brush bristle
Definitions
- Yet another object of this invention is to provide a new and improved brush finishing station for a brush finishing machine provided with abrasive elements of this invention which are rotatably mounted on axes above the path of travel of an upright brush member and are provided with a brush engaging surface having a configuration for progressively engaging the free ends of the bristles of a brush.
- a further object of this invention is to provide a novel method of finishing the bristles of a paint brush by feeding the bristles through a linear path and subjecting the bristles to a rotating tapered abrasive surface.
- Yet a further object of this invention is to provide a novel method of finishing paint brush bristles by subjecting the bristle ends to a convex rotating abrasive surface, the path of brush travel being vertically displaced from the abrasive surface so that the peripheral edge of the disc is spaced above the free ends of the bristles.
- FIGURE 1 is a fragmentary front elevational view of a brush finishing assembly showing one station of the 3,451,173 Patented June 24, 1969 brush finishing assembly which utilizes the novel abrasive means of this invention;
- FIGURE 2 is a bottom plan view of the abrasive element of this invention.
- FIGURE 3 is a section view taken along the line 33 of FIGURE 2;
- FIGURE 4 is a diagrammatic top plan view showing the relative positioning of the abrasive elements and the path of brush travel through the brush finishing station in which the abrasive elements of this invention are located and demonstrating the relative travel of the bristles and handle portion of the brush responsive to rotation of the abrasive element;
- FIGURE 5 is generally a side elevational view diagrammatically sequentially showing a brush being fed past the surface of the abrasive element of this invention
- FIGURE 6 is a section view taken along the line 66 of FIGURE 4;
- FIGURE 7 is a section view taken along the line 77 of FIGURE 4.
- FIGURE 8 is a section view taken along the line 88 of FIGURE 4.
- FIGURE 1 there is shown a portion of a brush finishing assembly such as is shown and described in greater detail in my copending application entitled Conveyor Apparatus, Ser. No..500,741, filed Oct. 22, 1965, now US. Patent No. 3,315,786, issued Apr. 25, 196 7.
- the brush finishing assembly 10 supports finishing accessories such as 12a and 12b which are mounted on substantially identical frame units 14 thereby defining a plurality of different brush finishing stations depending upon the particular accessories 12a and 12b mounted on each of the units 14.
- the units 14 could be grouped into a continuous assembly so that brushes 16 could be continuously fed through the assembly and subjected to different finishing operations by several finishing accessories attached to each unit.
- the apparatus and method of this invention could be suitably employed in one unit 14 or other basic units, the structure shown in unit 14 being for illustrative purposes only.
- the unit 14 includes a box-like frame 18 having upright supporting legs 20a, 20b, 20c, and 20d and cross-supporting braces 22 and 24a and 26 which are utilized to support the several components of the structure.
- the brushes are fed through the unit 14 in a linear path by conveyor means 30 mounted on frame 18 with the bristles facing generally upright relative to horizontal.
- conveyor means 30 mounted on frame 18 with the bristles facing generally upright relative to horizontal.
- finishing accessories 12b includes motor means 32 for providing a source of power to drive a suitable drive train mechanism 33 for driving a finishing element which may be enclosed within a shield or housing 34.
- This invention is concerned with the finishing element or abrasive member 36 which might also be categorized as a sanding disc.
- Abrasive member 36 includes a dish-like disc 37 which is circular in plan and has a generally tapered face 37a as best illustrated in FIGURES 2 and 3.
- the disc 37 is formed as a segment of the surface of a sphere to give it a convex configuration.
- the face is formed on a radius of 18 inches and the chord across the face is 12 inches.
- the tapered face 37a of the disc is coated with an abrasive material 38 which should be one suited for finishing paint brushes or similar articles, such as granular particles of nickel clad tungsten carbide, although other abrasive coatings may be suitable for this purpose.
- An upstanding hub 40 is generally centrally positioned in the interior or concave side of disc 37 to provide a means for connecting the disc to a driven shaft 42, which may be directly or indirectly connected to motor 32, by fastening means 44.
- a driven shaft 42 which may be directly or indirectly connected to motor 32, by fastening means 44.
- the disc 37 will be rotated also as indicated by the arrows A in FIGURES 4 through 8. It has been found that driving the disc 37 at 1600 revolutions per minute is desirable for this brush finishing operation.
- Suitable structure for rotatably journalling a disc-like member and for connecting it for rotation with the shaft of a motor 32 is known, such mounting arrangements being well within the ability of one skilled in the art and therefore will not be described in detail herein.
- FIGURES 4 through 8 diagrammatically illustrate the operation of the abrasive member.
- the axis of rotation of the disc is preferably aligned with the path of brush travel although it is possible that the axis may be laterally displaced therefrom.
- Each member 36 should be positioned so that it lies in a generally horizontal plane relative to the generally upright or vertical plane of linear movement of the brushes.
- the discs 37 may be canted slightly relative to horizontal. It is to be understood that as a general matter, the relative positioning of the extent of the bristles 16a of the brushes 16 should be generally transverse to the disc.
- the vertical orientation of the disc 37 relative to the brush bristles should be such that as the brush initially passes under the disc, the bristles will not engage the disc.
- the disc should be mounted so that the peripheral edge of the disc is slightly spaced from the free ends of the brush bristles.
- each disc As the brushes are fed in the direction indicated by the arrow B through the path 46, the rotation of each disc, as indicated by the arrow A, in combination with the configuration of the disc abrasive surface initially bends and fans the bristles 16a of the brushes outwardly generally in the direction of contour of the disc, as represented in FIGURES 4 and 6.
- the spacing of the disc so that the free ends of the bristles pass under the extreme peripheral edge of the disc supplements the bending and tapering action of the rotating disc.
- the brush As the brush travels further, it gradually engages a portion of the surface of the disc which is of greater depth, and therefore extends deeper into the bristles.
- the brush generally tends to fan out in the direction of decreasing depth or contour of the face of the disc regardless of on which side of the path of travel the disc is positioned and regardless of the direction of rotation of the disc.
- the abrasive element of this invention provides an abrasive surface which presents an area of increasing depth and contour relative to a brush fed past that surface in a generally linear path relative to the abrasive element.
- This action of flexing the brush bristles in combination with the rotation of the abrasive elements tends to generally expose the end portions of all of the bristles to the abrasive surface in such a fashion as will produce a. tapered contour to the free ends of the bristles.
- the structure of the element is relatively simple, the results produced therewith are vastly superior to anything previously used in the brushmaking art for finishing the tapered or chisled configuration on the bristles of a brush.
- a brush finishing apparatus comprising: means defining a supporting frame; means on said frame for feeding brushes in a path of travel through the frame; a disclike abrasive element mounted on said frame in a plane generally transverse to the plane of the bristles of brushes fed through said path of travel, said abrasive element having a generally convex bristle engaging surface coated with an abrasive material and mounted in the frame in a position for the bristle engaging surface to contact the free ends of brush bristles fed through said path of brush travel; and means on said frame for rotating said abrasive element.
- the method of finishing the bristles of a brush to a generally tapered configuration comprising: providing a disc-like abrasive surface having a curved convex configuration, feeding brushes across said curved surface in a path which progressively engages the bristles to varying depth and passes generally over the center of said surface and rotating said surface about a single fixed axis for spreading said bristles first in one direction and then in the opposite direction as the feed progresses across said curve of said surface.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Brushes (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52812266A | 1966-02-17 | 1966-02-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3451173A true US3451173A (en) | 1969-06-24 |
Family
ID=24104346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US528122A Expired - Lifetime US3451173A (en) | 1966-02-17 | 1966-02-17 | Abrasive element for finishing paint brushes or the like |
Country Status (6)
Country | Link |
---|---|
US (1) | US3451173A (de) |
JP (1) | JPS512746B1 (de) |
BE (1) | BE687543A (de) |
DE (1) | DE1532772B1 (de) |
GB (2) | GB1155734A (de) |
SE (1) | SE333351B (de) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4064658A (en) * | 1976-09-09 | 1977-12-27 | Blair Tool And Machine Corporation | Brush roundator |
US4144675A (en) * | 1976-05-12 | 1979-03-20 | Lion Hamigaki Kabushiki Kaisha | Apparatus for treating top ends of flexible cords |
US5165761A (en) * | 1991-12-30 | 1992-11-24 | The Procter & Gamble Company | Method of making improved toothbrush having multi-level tufts with substantially uniformly rounded bristle ends in each tuft |
US5593213A (en) * | 1994-03-11 | 1997-01-14 | Gillette Canada Inc. | Bristle finishing fork |
US5653628A (en) * | 1995-01-04 | 1997-08-05 | Coronet-Werke Gmbh | Device for rounding the ends of plastic bristles |
US5791740A (en) * | 1996-03-12 | 1998-08-11 | John O. Butler Company | Interdental brushes having roughened, tapered and rounded bristle ends and method of making the same |
US5893612A (en) * | 1995-12-13 | 1999-04-13 | Firma G.B. Boucherie, Naamloze Vennootschap | Apparatus and method for rounding fiber ends of brushes |
US5927819A (en) * | 1997-02-28 | 1999-07-27 | Gillette Canada Inc. | Method and device for trimming and end-rounding bristles |
US6464301B1 (en) * | 1998-10-14 | 2002-10-15 | M & C Schiffer Gmbh | Device and method for processing bristle filaments of brushes |
WO2003070054A1 (de) | 2002-02-20 | 2003-08-28 | Braun Gmbh | Schleifeinrichtung zum bearbeiten der enden von borstenfilamenten von zahnbürsten |
US20120019046A1 (en) * | 2010-07-22 | 2012-01-26 | Braun Gmbh | Method For Producing A Toothbrush Head |
EP2564726A1 (de) * | 2011-08-27 | 2013-03-06 | Braun GmbH | Verfahren zur Bereitstellung einer abriebfesten Schneidkante und Abschneidevorrichtung mit dieser Schneidkante |
EP3100639A1 (de) | 2015-06-05 | 2016-12-07 | The Procter and Gamble Company | Vorrichtung zur filamentendenabrundung und verfahren zur endabrundung von (zahn)bürstenfilamenten |
US20190159576A1 (en) * | 2016-06-22 | 2019-05-30 | Sinwa Corporation | Cosmetic brush and method for manufacturing same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6228378Y2 (de) * | 1978-11-16 | 1987-07-21 | ||
DE4234320B4 (de) * | 1992-10-12 | 2006-02-09 | Anton Zahoransky Gmbh & Co. | Vorrichtung zur Nachbearbeitung von Bürsten |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2435320A (en) * | 1946-05-01 | 1948-02-03 | Super Cut | Eyeglass lens grinding apparatus |
US2626221A (en) * | 1948-02-26 | 1953-01-20 | Reed Roller Bit Co | Process of applying hard surfacing material to metal bodies |
FR1019782A (fr) * | 1950-06-07 | 1953-01-26 | Guilhon Et Barthelemy Ets | Banc grèseur |
US2854797A (en) * | 1955-05-13 | 1958-10-07 | Pittsburgh Plate Glass Co | Apparatus for sanding the tips of brush bristles |
US3063204A (en) * | 1959-08-18 | 1962-11-13 | John G Baumgartner | Bristle grinding |
US3281996A (en) * | 1964-04-27 | 1966-11-01 | Norton Co | Saw blade |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2365396A (en) * | 1943-09-02 | 1944-12-19 | Du Pont | Taper grinding of artificial filaments |
US2685477A (en) * | 1949-02-02 | 1954-08-03 | John G Baumgartner | Brushmaking machine and method |
DE810867C (de) * | 1950-01-11 | 1951-08-13 | Brosse & J Dupont Reunis | Verfahren und Vorrichtung zum Abrunden und Polieren der Enden von Buerstenborsten |
CH297349A (fr) * | 1950-02-27 | 1954-03-31 | Sylvain Dr Dreyfus | Procédé pour émousser les bouts des brins garnissant des brosses, installation pour la mise en oeuvre de ce procédé et brosse obtenue par ce procédé. |
DE958016C (de) * | 1953-03-12 | 1957-02-14 | Dr Sylvain Dreyfus | Vorrichtung zum Abstumpfen und Abrunden der Borstenspitzen von Buersten |
DE1879941U (de) * | 1962-08-04 | 1963-10-03 | Blendax Werke Schneider Co | Vorrichtung zum abrunden von borstenspitzen, insbesondere bei zahnbuersten mit kunststoffborsten. |
-
1966
- 1966-02-17 US US528122A patent/US3451173A/en not_active Expired - Lifetime
- 1966-09-22 GB GB4073/68A patent/GB1155734A/en not_active Expired
- 1966-09-22 GB GB42295/66A patent/GB1155733A/en not_active Expired
- 1966-09-29 BE BE687543D patent/BE687543A/xx unknown
- 1966-12-13 JP JP41081318A patent/JPS512746B1/ja active Pending
- 1966-12-30 DE DE19661532772 patent/DE1532772B1/de not_active Withdrawn
-
1967
- 1967-02-16 SE SE02170/67A patent/SE333351B/xx unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2435320A (en) * | 1946-05-01 | 1948-02-03 | Super Cut | Eyeglass lens grinding apparatus |
US2626221A (en) * | 1948-02-26 | 1953-01-20 | Reed Roller Bit Co | Process of applying hard surfacing material to metal bodies |
FR1019782A (fr) * | 1950-06-07 | 1953-01-26 | Guilhon Et Barthelemy Ets | Banc grèseur |
US2854797A (en) * | 1955-05-13 | 1958-10-07 | Pittsburgh Plate Glass Co | Apparatus for sanding the tips of brush bristles |
US3063204A (en) * | 1959-08-18 | 1962-11-13 | John G Baumgartner | Bristle grinding |
US3281996A (en) * | 1964-04-27 | 1966-11-01 | Norton Co | Saw blade |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4144675A (en) * | 1976-05-12 | 1979-03-20 | Lion Hamigaki Kabushiki Kaisha | Apparatus for treating top ends of flexible cords |
US4064658A (en) * | 1976-09-09 | 1977-12-27 | Blair Tool And Machine Corporation | Brush roundator |
US5165761A (en) * | 1991-12-30 | 1992-11-24 | The Procter & Gamble Company | Method of making improved toothbrush having multi-level tufts with substantially uniformly rounded bristle ends in each tuft |
US5593213A (en) * | 1994-03-11 | 1997-01-14 | Gillette Canada Inc. | Bristle finishing fork |
US5653628A (en) * | 1995-01-04 | 1997-08-05 | Coronet-Werke Gmbh | Device for rounding the ends of plastic bristles |
US5893612A (en) * | 1995-12-13 | 1999-04-13 | Firma G.B. Boucherie, Naamloze Vennootschap | Apparatus and method for rounding fiber ends of brushes |
US5791740A (en) * | 1996-03-12 | 1998-08-11 | John O. Butler Company | Interdental brushes having roughened, tapered and rounded bristle ends and method of making the same |
US5927819A (en) * | 1997-02-28 | 1999-07-27 | Gillette Canada Inc. | Method and device for trimming and end-rounding bristles |
US6464301B1 (en) * | 1998-10-14 | 2002-10-15 | M & C Schiffer Gmbh | Device and method for processing bristle filaments of brushes |
WO2003070054A1 (de) | 2002-02-20 | 2003-08-28 | Braun Gmbh | Schleifeinrichtung zum bearbeiten der enden von borstenfilamenten von zahnbürsten |
US20120019046A1 (en) * | 2010-07-22 | 2012-01-26 | Braun Gmbh | Method For Producing A Toothbrush Head |
US8651582B2 (en) * | 2010-07-22 | 2014-02-18 | Braun Gmbh | Method for producing a toothbrush head |
EP2564726A1 (de) * | 2011-08-27 | 2013-03-06 | Braun GmbH | Verfahren zur Bereitstellung einer abriebfesten Schneidkante und Abschneidevorrichtung mit dieser Schneidkante |
WO2013030754A1 (en) * | 2011-08-27 | 2013-03-07 | Braun Gmbh | Method for providing an abrasion resistant cutting edge and trimming device having said cutting edge |
CN103763984A (zh) * | 2011-08-27 | 2014-04-30 | 博朗有限公司 | 用于提供耐磨切刃的方法和具有所述切刃的修剪装置 |
CN103763984B (zh) * | 2011-08-27 | 2015-12-23 | 博朗有限公司 | 用于提供耐磨切刃的方法和具有所述切刃的修剪装置 |
EP3100639A1 (de) | 2015-06-05 | 2016-12-07 | The Procter and Gamble Company | Vorrichtung zur filamentendenabrundung und verfahren zur endabrundung von (zahn)bürstenfilamenten |
WO2016196869A1 (en) | 2015-06-05 | 2016-12-08 | The Procter & Gamble Company | Device for filament end-rounding and a method for end-rounding (tooth)brush filaments |
US10314389B2 (en) | 2015-06-05 | 2019-06-11 | The Procter & Gamble Company | Device for filament end-rounding and a method for end-rounding (tooth)brush filaments |
US11096478B2 (en) * | 2015-06-05 | 2021-08-24 | The Procter & Gamble Company | Device for filament end-rounding and a method for end-rounding toothbrush filaments |
US20190159576A1 (en) * | 2016-06-22 | 2019-05-30 | Sinwa Corporation | Cosmetic brush and method for manufacturing same |
Also Published As
Publication number | Publication date |
---|---|
GB1155733A (en) | 1969-06-18 |
BE687543A (de) | 1967-03-01 |
DE1532772B1 (de) | 1971-12-23 |
JPS512746B1 (de) | 1976-01-28 |
GB1155734A (en) | 1969-06-18 |
SE333351B (de) | 1971-03-15 |
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