US2155245A - Round pointed tooth brush - Google Patents

Description

April 1 8, 1939. $EK|NE 2,155,245

ROUND POINTED TOOTH BRUSH Filed March 24, 1938 7 BY /0 sex??? ATTORNEY.

Patented Apr. 18, 1939 UNITED STATES PATENT OFFICE 1 Claim.

The purpose of this invention is to provide a combination tooth brush and tooth pick in the form of a brush with a round or other shaped head, in which the bristles are shaped to facilitate cleaning between the teeth with vertical strokes of the brush.

The invention is a brush, preferably having a circular head, in which the bristles are tapered to a point at the center, and the point is sufficient to enable cleaning between the teeth.

Tooth brushes have been made of various designs, and some have been formed with round and other shaped heads, and brushes of this type are curved or sloped so that they are high at the center, and other brushes have been provided with parts of the bristles, or, particularly, the bristles at one end, elevated in comparison to the remaining bristles, but it has been found very desirable to actually point the bristles so that a point is obtained in the center of the brush which may be forced in between the teeth on both the inside and outside, and may be used with both the upper and lower teeth.

The object of this invention is, therefore, to provide improvements in tooth brushes in which a quantity of the bristles are tapered to form a definite point that is adapted to be inserted between the teeth.

A further object is to provide a tooth brush in which the bristles taper to a point, in which parts of the bristles are sliced or cut to form a point at one section of the brush.

And a still further object is to provide a tooth brush which is particularly adapted for cleaning between the teeth which is of a simple and economical construction.

With these ends in view the invention embodies a tooth brush comprising a handle and a head, with a plurality of tufts of bristles in the head, and in which the ends of the bristles taper to a point.

Other features and advantages of the invention will appear from the following description taken in connection with the drawing, wherein:

Figure 1 is a view showing the side elevation of a tooth brush with the ends of the bristles pyramided by four flat tapering sides.

Figure 2 is a plan view of the brush shown in Figure 1.

Figure 3 is a side elevation of the head of a brush of an alternate design, in which the sloping portion of the brush is circular.

Figure 4 is a view showing a brush head of an alternate design, in which the head is square and the bristles in a circular position.

Figure 5 is a similar view showing both the head and bristles square. v

Figure 6 is a similar View showing a hexagonal head.

In the drawing the brush is shown as it may be made, wherein numeral I indicates the head of a tooth brush, numeral 2, the handle, and numeral 3, the bristles of the brush.

The bristles are preferably formed in individual tufts, as shown in Figure 2, and their outer extended ends are cut with four flat surfaces, as indicated by the numeral 4, and these taper to a point 5 at the center.

It will be understood, however, that the point may be formed by shaping the upper ends of the bristles in the form of a cone, as shown in Figure 3, in which the point is indicated by the numeral 6, the bristles by the numeral 7, and the head by the numeral 8. The upper or extending ends of the bristles may, therefore, be cut with as many fiat surfaces as desired, or the tapering surfaces may be round as desired.

The tapering ends of the bristles in the designs shown in Figures 4, 5 and 6 may also be formed fiat or circular, and, in the design shown in Figure 4, the head 9 is square while the bristles Ill are positioned in a circle, and, in the design shown in Figure 5, the head H is square with the bristles l2 also positioned in a square, and, in the design shown in Figure 6, the head I3 is hexagonal with the bristles [4 also positioned in a hexagon.

It will be understood that other changes may be made without departing from the spirit of the invention. One of said changes may be in the use of a head of any other shape or design, another may be in the use of a handle of any other type, and still another may be in the use of other means of arranging or mounting the bristles in the head.

The construction will be readily understood from the foregoing description. In use the brush may be provided as shown and described, and it will be noted that, while cleaning the teeth, it may be drawn downward for the upper teeth, and moved upward for the lower, and, with the point 5 inserted between the teeth, it is possible to clean them more efficiently than with a flat brush, or with a brush in which the upper surface is curved, or even with the type of brush having a projection at one end.

The small size of the brush head in combination with the pointed bristles enables the user to easily manipulate the brush in the mouth,

and with this brush every part of the mouth can be reached without effort, especially the very back teeth which are difiicult to reach with the ordinary brush.

Furthermore, the combination of these same two factors makes it possible for the user to close ing tufts, and with all of the bristles progres- 4 sively longer from the outer edge of the brush toward the center, forming a pronounced point; said brush characterized in that the ends of the bristles form two sets of oppositely positioned flat surfaces with the axis of one set in alignment with the longitudinal axis of the handle, and the axis of the other set of flat surfaces extending transversely thereof, said brush particularly adapted for cleaning between the teeth, with the point at the center extending into the crevices between the teeth, with the broad flat surfaces at the sides thereof contacting the surfaces of the adjoining teeth, said flat surfaces forming a pyramid, with only four substantially equal fiat sides.

IOJI SEKINE.

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