An Improved Tooth Brush.
Year: 1892

page_text: Date of Application, 25th Nov., 1892
Complete Specification Left, 25th Aug., 1893-Accepted, 30th Sept., 1893
PROVISIONAL SPECIFICATION.
An Improved Tooth Brush.
I FREDERICK WILLIAM GOLBY of 36 Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention as
communicated by Carl Ludwig Berger of Pinne, in the Empire of Germany,
Painter, to be as follows:-
This invention relates to an improved revolving tooth brush by means of which a
better and more thorough cleaning of the teeth, can be effected, than is possible
with the ordinary tooth brushes commonly in use. The improved tooth brush
essentially consists of a hollow handle containing a suitable motor for revolving the
shaft of the brush, which shaft is mounted in suitable bearings in the said handle.
The motor is constructed in the form of a clockwork movement and may be
wound up by means of a key or the like. By means of suitable gearing the
clockwork movement revolves the shaft of the brush in one or the other direction
according to the position of a reversing lever, which operates a suitable reversing
gear. When the brush is not to be used, the rotation can be stopped by means
of a pawl acted upon by a spring. For protecting the lips or mouth of the
operator, a shell like cover may be arranged on one side of the brush. To brush
the teeth it is only necessary to press a knob connected to the said spring pawl
thereby turning it out of gear, so that the clockwork is free to revolve the shaft of
the brush.
Dated this 25th day of November 1802
F. W. GOLBY,
36, Chancery Lane, London, W.C.
COMPLETE SPECIFICATION.
An Improved Tooth Brush.
I FREDERICK WILLIAM GOLBY of 36 Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention as
communicated to me by Carl Ludwig Berger of Pinne, in the Empire of Germany,
Painter, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
This invention relates to an improved revolving tooth brush by means of which
a better and more thorough cleaning of the teeth can be effected than is possible
with the ordinary tooth-brushes commonly in use.
This improved tooth brush is illustrated by the accompanying drawing;
Fig. 1 is a longitudinal section;
Fig. 2 a cross section taken on the line xx Fig. 1;
Fig. 3 is partly sectional side elevation; and Fig. 4 is a cross section on the
line y y Fig. 3.
A tooth brush of this kind essentially consists of a hollow handle B containing
a suitable motor F for revolving the shaft C of the brush proper A, which shaft is
mounted in suitable bearings of the said handle B. The motor F is constructed in
the form of a clockwork movement and may be wound up by means of a key G or
the like.
This clockwork movement F drives a toothed wheel J which gears with another
toothed wheel H on an axis K. The diameter of the wheel H is somewhat smaller
than that of the toothed wheel J. The axis K is further provided with two
toothed wheels L'and M the first of which may gear directly with a toothed
D... 023

page_text: wheel N being movable in the direction of its axis on the shaft C. The
toothed wheel M may also gear with toothed wheel N, but only by means of an
intermediate wheel O. The shaft C may therefore be caused to revolve in one
or the other direction according to the position of the wheel N.
The toothed wheel N is provided with a square bore and to the nave of it is
attached a lever P. By means of the latter the toothed wheel N may be moved
on the shaft C and be caused to gear with one or the other of the wheels L and O.
according to the position of the reversing lever P. When the brush is not to be
used, the wheel H can be stopped by means of a pawl R acted upon by a spring S.
To brush the teeth it only necessary to press upon the knob T hinged to the
pawl R. By doing so the latter is turned out of gear, so that the clockwork
movement F is free to revolve the shaft C of the brush.
For protecting the lips or mouth of the operator a shell like cover V may be
arranged on one side of the brush proper A.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is :-
A tooth brush the shaft C of which is caused to revolve in one or the other
direction by means of a motor F arranged within the handle B and acting upon a
gearing L. N or M. O. N according to the position of the lever P which moves
the tooth wheel N on the shaft C this revolving motion being controlled by a
stopping knob T the parts being arranged so as to operate, substantially in the
manner described and illustrated and for the purpose stated.
Dated this 25th day of August 1893.
F. W. GOLBY,
36, Chancery Lane, London, W.C.