US1632859A - Toothbrush - Google Patents

Description

. 1 June 21, 1927. R: E. STRAEHLY 59 TOOTHBRUSH Filed May 25. 1925 making Patented June 21, 1927.

PATENT OFFER;

ROYDEN EDWARD STRAEHLY, OF CHICAGO, ILLINOIS.

TOOTHBRUSH.

Application filed May 25,1925. Serial No. 32,676.

The invention relates broadly to brushes and particularly to improvements in brushes for cleaning the teeth.

An object of the invention is to provide a brush in which the bristle holder and handle may be turned at any desired angle relative to each other so as to make the effective brushing of the teeth simple and easy of accomplishment.

It is another object of the invention to provide a brush that may be used with the support carrying the bristles disposed at such an angle that an up and down movement to the brush can easily be efiected, thus it easy to clean the crevices and pockets in the teeth and to avoid the tendency to use the brush in a horizontal stroke, in which instance particles in the crevices of the teeth become packed between the teeth due to this horizontal brushing stroke instead of being ejected.

It is a further object of the invention to provide a tooth brush with a flattened bent end to be utilized in scaling the teeth, or in removing foreign matter lodged between the teeth.

T'Vith these and many other objects in view a preferred embodiment is shown, in the drawings, in which:

Fig. 1 is a side elevational view.

ll 52 is a cross section taken on line 2-2 of Fig. 1.

Fig. 3 is a perspective view of the bristle support shown detached from the handle.

Fig. 1 is a top plan view of a fragment of the handle secured to the bristle supportshown in full lines, the bristle support turned at right angles thereto shown in dotted lines.

In the carrying out of the invention the article is usually made of bone, celluloid, hard rubber, or aluminum. The handle 5, as shown, is of substantially rectangular cross section and is curved slightly downwardly as at 6 to bring the grip portion 7 to a convenient angle at which to grip it when using. The end, is flattened to a wedge shape as 8 to provide means for scaling the teeth, or removing foreign matter that may become lodged in inaccessible places, and an aperture is provided adjacent this flattened port tobe utilized in hanging the brush on a hook, nail, or the like when not in use. A counter bore 9 illustrated in Fig. 2 is sunk for a portion of the depth of the handle, and a bore 10 of smaller diameter is provided concentric therewith to be utilized in receiving a pivot pin.

The support 11 has a portion of its upper surfaces cutaway to form a shoulder 12. A bore 13 is provided in the upper side of the support and a groove 14 is provided directly below it, to receive a yielding member 15, carrying said support on which are tufts of bristles 16, hair or the like arranged to project perpendicularly therefrom, to provide the cleaning element. A pivot pin 17 is provided with an enlarged head to engage the counter bore 9' in the upper face of the handle and has secured to its lower end within the groove 14: the yielding element 15, which is formed of spring steel or the like and formed with a central arcuate portion to'which the pin is riveted. It will be seen that when using the brush as shown in the position indicated in Fig. 1 with the support parallel to the handle that the resilient element will permit the handle to give a little with respect to the support so as to make the operation of cleaning the teeth more convenient.

In Fig. 4 the brush support is shown disposed at right angles to the handle and in brushing the teeth with the brush in this position by an up and down movementa thorough cleaning is easily accomplished.v

It is to be understood that in attaining these ends, minor changes may be made in the details herein set forth without departing from the spirit of the invention set forth.

' I claim:

A tooth brush comprising a body provided with brush elements and also having atransverse recess in its under face that extends substantially across the body, an angularly adjustable handle extending from the body, a pivot pin projecting through the handle and body and projecting into the recess, a head on the outer end of the pin and contacting with the outer faceof the handle,

a and a bowed resilient element accommodated 7 the latter to frictionally engage the body 7 l and also serving to lock the body against axial movement on the pivot pin.

In testimony whereof I afiix my signature 10 at 10 South La Salle Street, Chicag0,Illinois.

RUYDEN EDWARDSTRAEHLY.

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