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Патент USA US2129306

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Sept. 6, 1938.
Filed Jan. 3, 1958
jïlve‘rfl’or `
Patented Sept. 6l, 1938
I 2,129,306
ì Glenn T. Mitton, Toronto, Ontario, Canada
Application January v3, 1938, Serial No. 182,995
1 Claim. (Cl. 15-167)
The invention relates to a brush for cleaning
dentures of the kind comprising a handle formed
of an elongated base and a curved head upstand
ing from the top side thereof, said head having
5 a semi-circular peripheral bristle carrying sur
face, and bristles outwardly projecting from said
peripheral surface terminating in a substantially
curved brushing surface in the plane of the han
dle, and has for its object to produce a brush of
10 this kind capable of manipulation in a circular
sweeping or brushing motion by holding it with
the thumb at one side centrally of the bristling
and the ñngers at the other side in order to
obtain a secure purchase, particularly for using
15 the brush by a wrist movement for brushing, in
I1 receptive to the lingers and merged into the 5
adjoining recess, as clearly depicted in the
The bristling is of a V-formation in cross sec
tion and the tufts I8 are lodged in holes I9 in
the head in a well known manner, which holes 10
are arranged in rows, there preferably being four
of such rows in side by side relation throughout
the length of the nat semi-annular face I 4 afore
said. The holes have angular axes so that the
tufts incline inwardly and interfit at their tip 15
particular, recesses and other grooved surfaces
portions thus producing the V-formation. The
of upper and lower dentures difficult of access.
series of holes of one row are staggered or lon
Having described the nature and object of the
invention, reference is now made to the accom
20 panying drawing in which
Figure 1 is a perspective view of the invention
illustrating its use in brushing interproXimal
Figure 2 is a side elevation thereof showing it
25 as employed in brushing the top grooved por
tion of an upper denture.
Figure 3 is an end view of the brush depicted
as applied to the groove curvature of a lower
Each side of the head is supplied with a cen
tral depression or recess at I6 receptive to the
ball of the thumb, and each side of the -grip or
base is supplied with a lengthwise groove as at
Figure 4 is a top plan view in which several
tufts are omitted in order to show the forma
tion of the holes in the bristle carrying surface.
gitudinally offset with respect of the series of
holes of another row by which a compact inter
locking of the tips of the converging tufts is 20
effected that enables them to brace one another
and produce a continuous semicircular brushing
or working surface in the plane of the handle.
The interspacial openings furnished by the di
vergent root portions or inner ends of the tufts 25
provide for ready removal of accumulated for
eign matter by flushing and also for free circu
lation of air through the bristles in drying, the
brush being stood on- its flat bottom for drying
It will be observed that the ends of the grip
or base are reduced on converging lines from a
Figure 5 is a cross section taken on line 5-5
point in the vicinity of the respective end of the
of Figure 4.
Abristle carrying face in order that the side faces
3.5 Figure 6 is a bottom plan view of the base.
of the ends may be substantially flush with the
Like numerals of reference denote similar parts sides of the bristles and therefore do not inter
in each figure of the drawing.
fere with the rotative manipulation of the brush
In the preferred construction of the invention in cleansing a denture.
herein disclosed, the reference numeral 1 gen
From the preceding description, it will be mani
40 erally denotes the bristling which is composed fest that this invention provides a brush structure
of tufts radially extending from a head 8 of a particularly advantageous for dentures and one
handle 9 having an elongated grip or base I0.
by which surfaces of a flat or grooved nature may
The head and the grip or base are unitary as
shown and provide opposite sides II and I2 with be thoroughly brushed. As has already been re
45 a fiat bottom I3 at right angles thereto. The counted, the brush is held by placing the ball of
handle may be constructed of suitable material the thumb in the recess of one side of the head
according to circumstances of manufacture, and and the lingers in the groove along the opposite
side of the grip or base. A rotative movement
the bristling may and will be of approved sub
may be imparted to the brush by a wrist move
ment and/or by a finger action using the thumb
The head is semicircular in shape and prefer
ably has a flat peripheral face I4 constituting as the centre of angular motion.
the bristle carrying surface, which head upstands
What I claim is:
from the top of the grip or base IIJ and is dis
A denture brush composed of a handle formed
posed medially of the length of the same with 'of a flattened unitary head and base providing
55 its rounded face short of the ends I5.
opposite sides and a ñat bottom, said head being
semi-circular in shape to provide a semi-circular
bristle carrying surface, said base intercepting
the curvature of the head in lengthwise direc
tion with its ends projecting outwardly of the
ends of the curvature, each flattened side of the
head having a central thumb recess merged into
a finger groove formed in the same side of the
base lengthwise thereof, and bristles radially pro
jecting from said semi-circular surface, said bris
tles being of such length as to produce a concen
trically curved working surface.
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