US1430967A - Toothbrush - Google Patents

Description

A. E. FENDRICH.

T'OOTHBRUSH.

APPLICATION FILED DEC. 5. 1919.

1 43mm, Patented (mg, 1922..

Patented Got. 3, limit widow i i ADAM l3. FEHDBICH, 01? WE.

.ELVU'KEERT,

TOOTHBRUSH.

Application filed December 5, 3.918. Serial. No.

To all whom it may concern:

Be it known that I, ADAM E. FENDRICLT; a citizen of the United States, residing at Weehawken, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Toothbrushes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in tooth brushes and more particularly to the rotary type and has for its primary object the provision of a guard that will prevent the lips of a person from being drawn in between the guard and the brush during the operation of the device, thereby obviating any danger of injuring the lips.

Another object of this invention is the provision of means which will permit the removal of the brush from the guardat any time desired.

A further object of this invention is the provision of a tooth brush of the above stated character, which shall be simple dura ble and ellicient, and which may be manufactured and sold at a comparatively low cost.

lVith. these and other objects in view as will become more apparent as the description proceeds, the invention consists in certain novel features of construction, combination, and arrangement of parts as will be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description, and accompanying drawing, in which Figure 1 is a side elevation of a tooth brush constructed in accordance with my invention,

Figure 2 is a vertical sectional view of the same with the cover removed,

Figure 3 is an end elevation illustrating the guard with its open end and the guard flanges,

Figure 4: is a detail sectional view of the cover.

Referring in detail to the drawing the numeral 1 indicates a handle of hollow formation to rotatably support an operating rod 2 that extends or projects beyond each annular shoulders 5 and 6 are formed upon the other end of the rod 2 said end or the rod is provided with a screw threaded socket 7 to receive the screw threaded end of a shank 8 of a brush 9. The shank 8 has secured thereto in spiral formation bristles 10 so as to form a brush of a rotary type.

A semi-circular guard 11 is formed on the end of the handle 1 and partly encloses the brush 9. The end of the handle 1 tapers towards the guard 11 as illustrated at l9- and said guard at its point of formation to the handle is provided with a groove 13 to reccive the shoulder 6 to prevent endwise movement or the operating rod in the handle during the use of the device. The groove 13 is provided. with a comparatively low wall 14c providing a construction wherein a slight bending or flexing of the end of the operating rod 2 will permit the shoulder 6 to be disengaged from the groove 13 when desiring to remove the operating rod from the handle 1 and after the removal of the operatingmember 4:. The free end of the guard ll. is open to permit the removal of the brush 9 from the operating rod 2 or to permit of the removal of the operating; rod 2 from the handle 1. liaterally extending flanges 15 are formed upon the C(lgfGS o ii'the guard 11 to prevent a persons lips "from being drawn in between the guard and the brush during the rotation oi the brush.

it cover 16 ot substantially semi- 'ircular shape in cross section is provided along its edges with retaining flanges 1'? that are oil such shape to form grooveslttl that receive the flanges 15 when the cover is slid onto the guard in an endwise direction. One end of the cover carries a circular end wall 18 that is adapted to close the open end of the guard 11 when said cover is applied, thereby completely housing; the brush within the guard. The other end of the cover 16 is inclined as illustrated at 19 to conform to the inclined end 12 of the handle 1. i

From the foregoing description taken in ii e actuating member t is de- 60 connection with the accompanying drawing, it will be noted that when it is desired to use the device for cleaning teeth, the cover 16 is slid endwise from the guard 11 exposing the brush 9 whence the same is placed against the teeth and held in one hand with the handle 1 and with the other hand the operating rod 2 is rotated or oscillated by the actuating or operating member 4. When the device is in use, the lips of the person bear against the guard flanges 15 and prevent them from being drawn in between the guard and the brush.

While I have shown and described the preferred embodiment of my invention, it will be understood that minor changes in construction, combination, and arrangement of parts may be made without departing from the spirit and scope of the invention as claimed.

Having thus described my invention, what 1 claim is 2- A tooth brush comprising a hollow handle, an operating rod journaled in said handle and extending beyond the end thereof, a brush carried by one end of the rod, a guard carried by the handle to receive a portion of the brush, an annular collar adjacent said end of the rod, said guard having a groove to receive the collar and having one wall of a less height than the other to permit the collar to ride over the same when the rod is manually flexed.

In testimony whereof I allix my signature in presence of two witnesses.

ADAM E. FENDRICH.

Witnesses LESTER L. DAVIS, JOHN GALLERY.

Images