US1632102A - Toothbrush - Google Patents

Description

June 14, 1927. 1,632,102

W. H. VATCHER TOOTHBRUSH Filed July 1. 1925 INVENTOR WILLIAM H-VATOHER wmaes AQ/WM E gs-Low d Patented June 14, 1927.

UNITED STATES WILLIAM H. VATCHER, OF LOS ANGELES, CALIFORNIA.

TOOTHBBUSH.

Application filed July 1, 1925. Serial No. 40,774.

An object of the invention is to provide a tooth brush particularly adapted to the application of liquid dentifrices to the teeth and gums,

Tooth brushes have heretofore had a flat base from which the bristles extend, and when a liquid dentifrice is poured onto the brush from a bottle, the liquid is likely to drip from the brush before it reaches the mouth.

An object is to provide a practical tooth brush whereby liquid dentifrices may be retained while the brush is being carried to the mouth.

An object of the invention is to provide a simple liquid applying tooth brush which is effective in operation, pleasing in appearance, and substantially the same shape as approved tooth brushes now in use.

Other objects, advantages and features of invention may appear from the accompanying drawing, the subjoined detailed description and the appended claims.

' The accompanying drawing illustrates the invention.

Figure 1 is a planview of the brush in position to receive liquid dentifrice.

Fig. 2 is a side elevation of the same. Fig. 3 is a longitudinal section on line Fig t is a cross section on line :12, Fig. 1.

Fig. 5 is a view of the bristle end of the brush. i p

F 6 is a longitudinal mid-section of a n'iodified form of a brush constructed in accordance with the principle of this invention.

The brush handle 1 may be of any usual construction and the chamfered or cupped head 2 is preferably integral therewith.

The longitudinallyextending cup, cavity or sump 3 is shown sloping upwardly at the front and rear as at 4. 5 so that the bristles at tip and heel are shorter and stiffer than they would be if the face from which the bristles extend was plane. It also avoids any sharp corners in which dirt or sediment might accumulate and it facilitates cleansing and washing out the cavity.

The cavity is also transversely arcuate as shown in Fig. t so that the marginal bristles along the brush will also be somewhat short er and stiffer than the middle bristles.

overflowing at the ends The bristles 6 rise from the bottom of the cavity 3, and the bristled surface may be shaped to any desired configuration.

To prevent spilling liquid from the cavity 3, when tilting the brush to bring the bristles to brushing position, one edge 7 is nearer the plane of the brushing face of the bristles than the other edge so that when the brush is turned over toward the right side in said figure, flow from the cup Will be controllable by the user according as he turns it over edgewise. i

The front and rear ends 8 of the head 2 slope from the left edge to meet the right edge 7, so that the liquid is prevented from applicable for brushing the back of the teeth. 7 v i I claim:

1. A tooth brush comprising a handle, a head on said handle, said head having a long tudinally extending cavity therein, and bristles rising from thefloor of said cavity, said floor sloping'upwardly at the ends and being substantially arcuate in cross section.

2. A tooth brush comprising a handle, a A

head on said handle, said head having an elongated cup therein, and bristlesrising from the cup; one of the longitudinal edges of said cup being nearer the plane of the.

brushing surface than the other so that liq uid Will be retained in the cup when tilted to bring the brushing surface to brushing posit-ion.

In testimony whereof, I have hereunto set my handat os Angeles, California, this 26th day of June, 1925.

WILLIAM H. VATCHER.

of the cup during

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