US1442363A - Toothbrush - Google Patents

Description

Jan. 16, 1923.

15 (l `n l gyn/vento@ Patented dan. l, i923.

tcllttil') STATES ALEXANDER SAXE, OF NEVI YORK, N. Y.

TOOTHBRUSH.

To all Iwhom t may Coface/m it known that I, .e-.Lrxeivninz Senn, citizen of the United States, and resident o 100 Fifth Ave., New York city, ll. Y..

' borough of l-ailanhattan. county of New York,

State of New York. have invented certain new and useful Improvements in Toothbrushes, of which the following is a specification.

The device the subject of this invention, is a tooth brush of the character wherein the head or bristle carrying member and handle are relatively rotatable.

In the past the so called rotatable head tooth brushes have had the very serious objection that they were mechanical and included a plurality of metallic parts such as springs, rivets, and catches which combine to make them expensive in construction, somewhat difiicult in operation, and unsanitary in the extreme. I have therefore in developing this device attempted to overcome all of these objections and have succeeded in so far that my device is devoid of metallic parts, operates simply and easily, and is so proportioned that all parts may be readily cleansed.

rlfhe means whereby the objects of my invention are accomplished and the details of construction will be set forth in the specication which follows and the accompanying drawing should be referred to for a complete understanding of the invention.

In the drawing;

Fig. 1 shows my brush in side elevation.

Fig. 2 is a sectional view of the important parts.

Fig. 3 shows in section a slightly different construction.

Fig. 4 is a plan view.

Fig. 5 is a plan view of a head of modified construction.

Fig. 6 is a reversed plan view of a handle adapted to operate with the head shown in Figure 5.

Fig, 7 is a sectional view of the head shown in Figure 5, the bristles, and bristle recesses are, however, omitted, as the bristles play no special part in my invention.

Similar reference numerals indicate like parts in all the figures where they appear.

At 10, I show a handle which may be bent as shown in Figure 1, or straight as shown in Figure 3. The shape of the handle is immaterial.

The free end of the handle 11 may also be given any desired or decorative shape. At the other,l the inner end of the handle, I provide a countcrsnnk perforation into which I introduce a pin 19.. rlfhis pin, passing through the handle, enters and is secured in the head 13 of the brush, and suitable bristles 14 are secured in the head in any desirable manner.

I prefer that the handle 10, pin 12, and head 13 should all be formed of similar material such as Celluloid, bone or other suitable substance and the )in 12 should be secured into the head 13 by being cemented there-in, and if the parts are made of celluloid, the cement commonly used in Celluloid work will so secure the pin that it virtually becomes a part of the head 13.

I call particular attention to the fact that one group of bristles as shown at 15 may be secured in the pin 12 thus overcoming the objectionable space so common in brushes of this type.

Surroundingl the pin 1Q and in the handle 10. I produce an annular groove or recess into which I secure a ring of cork, rubber. linoleum, or other suitable material as shown at 16. Obviously this ring must be placedin position before the handle is secured to the head 13 and when so secured the ring 1G will be compressed so as to bear firmly upon the surface of the head 13. rlhis inserted member 16 will serve as a fric tion producing device between the head and the handle. If. cork is used the swelling of the cork when wet will increase the friction to a very desirable and satisfactory extent.

As shown in Figures 1 and 2 the handle and head are retained separated by the ring 16. The separation is however in these figures exaggerated. I may compress the part until they are actually in bearing one with the other as shown in Figure 3. The thickness of the ring 1G. and depth of the recess into which this ring is to be received may be varied at will. In Figure 3 I indicate at 17 a thin ring or rubber of linoleum or other frietional material.

Most rotatable head brushes have definite stopping points. I may also obtain such stopping points by providing a plurality of shallow recesses 13, 19, 20, and 21 in the head of the brush as shown at 22 in Figure 5, and may also provide in the handle 23 inserts of cork or other suitable material as shown at 24, 25, 26 and 27. each of which is adapted to engage into a recess in the head.

Obviously l ma provide one or more frictional inserts an one or more recesses. l may insert the ring 16 or 17 or the insert blocks 24k-27 into the head instead of into the handle. l may make the pin 12 with' a tapered head. l may change the shape or outline of any or all of the parts and employ the part of one construction shown With another and make other modifications Within the scope o1 the appended claims Without departing troni the principle or sacrificing the advantages of this invention.

Having carefully and iully described my invention what I elaiin and desire to secure by Letters Fatent is:

1. A toothbrush having a relatively rotatable head and handle one of which is provided With a groove, a pivot pin for retaining said head and handle a fixed distance from each other and a non-metallic member in said groove and in frictional engagement with said head and handle.

2. A tooth brush having a relatively rotatable head and handle7 a pin 'for retaining said head and said handle in operative relation7 said handle being provided With an annular' groove surrounding said pin and a non-metallic member arranged in said groove and in frictional engagement with said head.

Signed at New York cit in the county of New York, and State ot New York this 27 day of Dec., 1921.

ALEXANDER SAXE.

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