Improvements in Tooth Brushes.
Year: 1893

page_text: Date of Application, 6th May, 1893
Complete Specification Left, 5th Feb., 1894-Accepted, 31st Mar., 1894
PROVISIONAL SPECIFICATION,
Improvements in Tooth Brushes.
WILLIAM ARTHUR STANFIELD 134 Grosvernor Road, Belfast, Clerk, do
hereby declare the nature of this invention to be as follows:-
:-
This improvement relates to brushes wherein such brushes are used for cleaning
teeth and consists in making the brush act in an upward and downward manner
upon the teeth, by causing it to revolve, or by fitting any motion for this purpose,
said motions to be caused by springs, coil or otherwise, or by fitting threads on
the stem of brush & making corresponding threads (male & female) inside a
tube, said tube to work up and down the stem of brush.
Signed this 5th May 1893.
WILLIAM ARTHUR STANFIELD.
WILLIAM ARTHUR STANFIELD 134 Grosvernor Road Belfast Clerk, do hereby
declare the nature of this invention and in what mauver the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
This improvement relates to tooth brushes wherein such brushes are made to
revolve,, for the purpose of brushing the teeth in an upward and downward
manner.
I attain this end in the manner illustrated by the accompanying drawings, in
which
Fig. 1 is a view in longitudinal section of a brush embodying my improvement.
Fig. 2 is a transverse view of the inner tube shewing projections, recesses, and
stem gearing.
It consists of a circular brush and shield A, having a stem B of Archimedean
screw design, an outer tube C, geared into the stem B, having springs G, (rubber
or wire) attached; the pressure of thumb upon the tube C downwards, to make
tbe brush revolve. On releasing the thumb pressure the springs will force or
draw the tube back. I fit an outer tube D over all, having finger grips on the
outside at one end, the other end to form a bearing for the stem B. It must
also have grooves or recesses lengthwise in the inside, into which projections on
the tube Care fitted to prevent it revolving.
As a modification of above the brush' may be made to revolve by means of a
rack and pinion in the usual well known mauner as shewn in Fig. 3, wherein the stem 1
of brush inay be grooved lengthwise, or have a small pinion 2 fitted upon it. A
rack 3 fixed crosswise, having teeth fitted or geared into the pinion 2 with
springs 4 attached; the pressure of the hand upon rack 3 to make the brush
revolve and the springs will force or draw the rack back when the hand pressure
is released.
Fig. 4 is a view in side elevation shewing the rack, pinion, and springs.

page_text: Having now particularly described and ascertained the nature of this improve-
ment and in what manner the same is to be performed, I declare that what I
claim is :-
First. A brush made to revolve by hand pressure, having a grooved stem or
otherwise, for the purpose of brushing the teeth in an upward and downward
manner.
Second. In a revolving tooth brush the combination of a circular brush and
shield, an Archimedean grooved stem, an outer and inner tube having springs
attached, a stem grooved or fitted with a pinion & actuated by a rack as described,
all combined, arranged and operating as and for the purpose set forth.
Signed this 3rd day of February 1894.
WM. A. STANFIELD.