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Publication numberUS914501 A
Publication typeGrant
Publication dateMar 9, 1909
Filing dateApr 6, 1908
Priority dateApr 6, 1908
Publication numberUS 914501 A, US 914501A, US-A-914501, US914501 A, US914501A
InventorsDonald Mceachern
Original AssigneeDonald Mceachern
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 914501 A
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Description  (OCR text may contain errors)




Patented Mar. 9, 1909.


' 25 the brush on an enlarged scale.

30 figures.



Specification of Letters Patent.

Patented March 9, 1909.

Application filed April 6, 1908. Serial No; 425,485.

To all whom it may concern:

Be it known that I, DONALD MGEAOHERN, of Argyle, in the Provinceof Ontario, Canada, have invented certain new and useful Improvements in'Tooth-Brushes, of which the following is a specification.

My object is to devise a tooth brush in which is provided a suitable retainer for a liquid dentifrice and water, and means for holding the bristles in shape and which is nevertheless as simple and cheap to construct as a brush of ordinary construction. A brush constructed in accordance with r. m invention comprises a back in which tufts of bristles are set in the ordinary way, and an inwardly inclined wall surrounding the tufts or bristles but only in contact with the bristles at its upper inneredges, thus leaving a reservoir surrounding the bases of.

2 the tufts of bristles.

Figure 1 is a side elevation of a brush constructed in accordance with my invention, the head of thebrushbeing in section. Fig. 2 is a crosssection throughthe head of IFig. 3. isa plan view of the'brush with the bristles removed. f

In the drawings like letters of reference indicate corresponding parts in the difierent A is the brush handle, of any desired shape, and provided with the hole a by means ofwhich it may be hung to a suitable The head B of the brush has an oblong recess cut therein to form walls 0 integral with the back D. The sides of the recess are undercut so that the walls C incline inwardly from opposite sides. The ends of 40 -the'recess are also undercut, particularly the rear end, the undercutting of the forward.

endsof the recess not being of so much importance. 1

In the back at the bottom of the recessare formed a plurality of-rows of holes 6' in which are inserted the tuftsofbristles E.- The holes, it will be seen, are set inwardly from the bases of the side walls so that an nlnperforated portion of the back is'left be-,

v tween the outer rows of holes and the side walls. The walls are of such a height and so inwardly inclined that they contact with the sides of the outer rows of tufts of bristles at apoint intermediate their fixed and free ends.

greatest advantage as any such liquid apalong them partly by the brush being conducted to be just as durable."

It will be seen, particularly on reference to the sectional views, that a reservoir is thus formed at each side of-the bristles of the brush, each of WlllChyI'GSGI'VOllSiS substantially triangular in cross section, and which is substantially closed at its outer side by the contact of the side wall with the bristles. This construction ofv the brush enables a liquid dentifrice to be used "to the plied'to the brushaccumulates in the reser- .v'oirs, and when 'the'brush is tilted to the position 1n which it is used the liquid'fiows from the" reservoir to the bristles, flowing gravity and partly by capillary attraction till the points of the bristles are reached.

The importance of the inner upper edges of the sidewalls touching the bristles will understood, as otherwise when was tilted the liquid instead of the bristles would sim-' ply flow out of the lower'reservoir over the sidewall. The contact of the inner upper edges of the side walls with the bristles also serves the function of holding the bristles in shape without-interfering in any way with their free elastic action. l

- The comparatively deep undercutting of the rear end of the'recess is of importance as the brush 'is usually held'with the handle lower than the head of the brush and the liquid used therefore naturally tends to flow 'toward the handle. The comparatively large reservoir formed at this point serves to retain the dentifrice, and from it the dentifrice will flow when-the brush is inserted in the mouth and turned to the readily be horizontal position,

My brush not only possesses important advantages in use, but will cost no more-to construct than the ordinarybrush, and will The head of the brush is all in one piece, and the bristles are connected to the back in the ordinary manner, the extra material in the side walls and the extra labor of shaping being practically negligible quantities.

What I claim as I my invention is I 1. A brush head having an oblong recess with undercut sidewalls formed therein and a plurality ofrows of holes at the bottom of the recess, an unperforated portion being left between the outer rows of holes and projecting from the recess.

2. A brush head having an oblong recess with undercut side and rear end 'Walls formed therein and a plurality of rows of.

holes at the bottom of the recess; an unperforated portion. being left between the outer rows of holes and the side walls of'the re-' cess, in eombination'with tufts of bristles 10 set in said holes and projecting from the Argyle, Ont, 2nd April 1908.

' DONALD MOEACHERN. v Signed in the presence oI' J OHN G. RIDOUT, BELLE Looim.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2710982 *Feb 2, 1951Jun 21, 1955Walter F GillemBrush of integral construction
US2888696 *May 10, 1955Jun 2, 1959Vimonta Internationale HandelsCleaning brush, particularly for mouth treatments
US5613262 *Jul 27, 1994Mar 25, 1997Choy-Maldonado; Gina N.For cleaning the surface of the tongue
US5628082 *Mar 22, 1995May 13, 1997Colgate-Palmolive CompanyToothbrush with improved efficacy
US5758383 *Dec 10, 1996Jun 2, 1998Colgate-Palmolive CompanyContouring toothbrush head
US6073299 *Jul 12, 1999Jun 13, 2000Colgate-Palmolive CompanyContouring toothbrush head
US6178582Aug 22, 1996Jan 30, 2001Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6219874Jul 12, 1995Apr 24, 2001The Procter & Gamble Co.Resiliently flexible bristle bearing head toothbrush
US6314605Aug 1, 1997Nov 13, 2001The Procter & Gamble CompanyToothbrush
US6314606Oct 22, 1999Nov 13, 2001Colgate-Palmolive CompanyContouring toothbrush head
US6327735Feb 17, 1998Dec 11, 2001Smithkline Beecham Consumer Healthcare, GmbhPower tip toothbrush with ball joint
US6408476Jan 17, 1997Jun 25, 2002The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US6442786Jan 25, 2001Sep 3, 2002Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6442787Jul 3, 2001Sep 3, 2002Colgate-Palmolive CompanyContouring toothbrush head
US6505373Apr 18, 2001Jan 14, 2003The Procter & Gamble CompanyToothbrush
US6514445Dec 12, 1997Feb 4, 2003The Procter & Gamble CompanyBrush making
US6675428Dec 15, 2000Jan 13, 2004Smithkline Beecham Consumer Healthcare GmbhToothbrush comprising a resilient flex region
US6996870Apr 1, 2002Feb 14, 2006Colgate-Palmolive CompanyContouring toothbrush head
US7707676Jun 30, 2006May 4, 2010The Procter & Gamble CompanyToothbrush
US7721376Dec 23, 2004May 25, 2010Colgate-Palmolive CompanyOral care implement
US7908699Dec 23, 2004Mar 22, 2011Colgate-Palmolive CompanyOral care implement
US7962992Dec 23, 2005Jun 21, 2011The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US8042555Sep 5, 2007Oct 25, 2011Elc Management LlcHead for a cosmetic applicator
US8060970Mar 11, 2010Nov 22, 2011The Procter & Gamble CompanyToothbrush
US8079110May 26, 2010Dec 20, 2011Colgate-Palmolive CompanyOral care implement
US8156600Sep 9, 2008Apr 17, 2012The Gillette CompanyGum massaging oral brush
US8327492May 16, 2011Dec 11, 2012The Procter & Gamble CompanyToothbrush with elastomer filled flexible head
US8332985Nov 18, 2011Dec 18, 2012The Procter & Gamble CompanyToothbrush
US8393042Oct 9, 2009Mar 12, 2013Colgate-Palmolive CompanyOral care implement
US8448287Jul 14, 2011May 28, 2013Mcneil-Ppc, Inc.Replaceable toothbrush head
US8561247Jun 17, 2011Oct 22, 2013Colgate-Palmolive CompanyOral care implement
US8584299Jul 25, 2007Nov 19, 2013The Procter & Gamble CompanyElectric toothbrushes
USRE38521Jul 28, 1999May 25, 2004Lingner & Fischer GmbhToothbrush with resiliently flexible head
WO1996002165A1 *Jul 12, 1995Feb 1, 1996Gelder Maria VanResiliently flexible bristle bearing head toothbrush
International ClassificationA46B11/00
Cooperative ClassificationA46B11/001
European ClassificationA46B11/00C