Tooth-brush.

(Application filed Dec. 9, 1899.)

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United States Patent Office.

DAVID JOHN ARCHER, OF TORONTO, CANADA.

TOOTH-BRUSH.

SrECIFICATiblir forming part of Letters Patent No. 660,677, dated October 30, 1900. implication filed December 9, 1809. Serial No. 7-39,858. (No model.'

To all whom it may concern:

Be it known that I, David John Archer, barber, of the eity of Toronto, in the county of York, in the Province of Ontario, Canada, 5 have invented certain new and useful Improvements in Tooth-Brushes, of which the - following is a specification.

My invention relates to improvements in tooth-brushes; and the object of royinvenϊο tion is to design a tooth-brush so that the dentifrice used for cleaning the teeth can be fed-into the head from the handle at will:. and it consists, essentially,of a head provided wi th a hollow shank'.screwed into a hollow end-ta15 pered reservoir and means secured to said reservoir for feeding the paste into the head, as hereinafter more particularly explained.

The construction of the .parts for feeding the dentifrice into the tip of the brush are 20 fully described in my application for shaving-brushes, Serial No. 737,235, filed November 1G, 1890.

Figure 1 is a perspective view of my toothbrush, showing the cap removed and hole for 25 feeding the paste into the tip. Fig. 2 is a longitudinal section showing tin; construction of my tooth-brush.

In the drawings like letters of reference indicate corresponding parts in each figure.

A is a reservoir-tube in which the dentifrice is put, and B the head, which is screwed by its threaded shank C into the nock D of the reservoir. It will be noticed that one end of the reservoir A is tapered, as at E. The 35 object of this tapered portion is to bring the paste F into a reduced passage-way before it is fed into the passage-way G into the head B, and thus concentrate the pressure of the paste as much as possible directly over the entrance of the passage-way G. The inner end II of tlio passage-way G is beveled, and thus reduces as much as possible any obstruction around the sides of the hole to the entrance of the paste. The shank D is reinforced on its upper side at I)'. The inner end I of the passage-way G is enlarged, so as to facilitate the passage of the paste therefrom into the head B.

J is a sleeve fitting over the reservoir A., 50 Rigidly secured in its upper end J is a threaded rod'L, which, has movement in the inter;

nally - threaded bearing - plug M, which is screwed into the end a of the reservoir. Rigidly secured to the inner end of the threaded rod L is a plunger-head O, which fits the in- 55 side of the · reservoir Λ. The object of the plunger-head 0 is to feed the dentifrice into the head B when the sleeve J is turned, as will be understood.

P P are alternate rows of holes made in the 60. sleeve'J. The head of rhe bearing-plug M is milled, as at in. The object of the alternate rows of holes 1’ P is to enable the tips of the fingers to be pressed into said holes and’unscrew the bearing-plug M from the reservoir 65 A, 110 matter how far in of how far out the sleeve J may happen at the moment to be, and thus obviate the necessity of having to _ιπηνα the said sleeve into any particular place . before the bearing-plug M could be removed. 70

R is a metal cap for protecting the tip B. The cap R is provided with flanges b b, which fit on the inner side of the head B when the cap is in place, as shown.

From this specification it will be seen that 75 my tooth-brush is of very positive action and simple in construction.