Year: 1898

page_text: Date of Application, 15th Dec., 1898
Complete Specification Left, 30th Aug., 1899--Accepted, 30th Sept., 1899
We, JAMES BIDWELL, ARTHUR BIDWELL, and THOMAS ALEXANDER YOUNG,
trading as Bidwell, Bidwell & Co., of Axminster, in the County of Devon, Brush
Manufacturers, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in tooth brushes.
In tooth brushes as hitherto made the head or block of the brush is bored with
rows of holes extending partly therethrough, to receive the bristles on one side
thereof and is graved or grooved upon the other side to a depth sufficient to meet
the holes in the other side thereof for the reception of the wires which
secure the bristles in the brush the said grooves extending from the extreme end
down to and below the shoulder. With brushes constructed in this manner it is
often found that the head splits longitudinally along the rows of holes when in
use so that the bristles are released.
Now, this invention has for its object to obviate this disadvantage and to this
end, instead of making the grooves extend along the whole of the back of the
brush, that is to say, from the extreme end to and below the shoulder we stop
the grooves short of the end and shoulder so as to leave solid ungrooved portions
which are not liable to split.
In carrying out the invention we advantageously bore holes near the end and
near the shoulder corresponding to those in the same position on the other side
of the brush and we run the grooves between end and shoulder holes; the
auxiliary holes thus formed are preferably smaller than those upon the other
side of the head which receive the bristles and are extensions of some of the
said holes.
In some cases instead of the two series of additional holes, that is to say, the
two series of holes which extend right through the back of the brush we may
make two or more rows at about the centre of the head of the brush, the grooves
in this case not extending the whole distance between the extreme rows but
being interrupted so that a solid portion is left between them transversely across
the head of the brush.
The grooves upon the back of the brush head can be graved as above described
without the employment of the auxiliary holes and the said grooves can be
divided into sections so as to leave intermediate transverse solid portions of the
brush head which is thereby strengthened.
Dated th
1
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.

page_text: Improvements in
We, JAMES BIDWELL, ARTHUR BIDWELL, and THOMAS ALEXANDER YOUNG,
trading as Bidwell, Bidwell & Co., of Axminster, in the County of Devon, Brush
Manufacturers, do hereby declare the nature of this invention 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 improvements in tooth brushes.
In tooth brushes as hitherto made the head or block of the brush is bored with
rows of holes, extending partly therethrough, to receive the bristles on one side
thereof and is graved or grooved upon the other side to a depth sufficient to meet
the said holes for the reception of the wires which secure the bristles in the
brush, the said grooves extending from the extreme end down to and below the
shoulder. With brushes constructed in this manner it is often found that the
head splits longitudinally along the rows of holes when in use so that the bristles
are released.
Now, this invention has for its object to obviate this disadvantage and to this
end, instead of making the grooves to extend along the whole of the back of the
brush, that is to say, from the extreme end to and below the shoulder we stop
the grooves short of the end and shoulder so as to leave solid ungrooved portions
which are not liable to split.
In carrying out the invention we advantageously bore holes near the end and
near the shoulder corresponding to those in the same position on the other side
of the brush and we run the grooves between the end and shoulder holes; the
auxiliary holes thus formed are preferably smaller than those upon the other
side of the head which receive the bristles and are extensions of some of the
said holes.
In some cases, instead of the two series of additional holes, that is to say, the
two series of holes which extend right through the back of the brush we may
make two or more rows, at about the centre of the head of the brush, the grooves
in this case not extending the whole distance between the extreme rows but
being interrupted so that a solid portion is left between them transversely across
the head of the brush.
The grooves upon the back of the brush head can be graved as above described
without the employment of the auxiliary holes and the said grooves can be
divided into sections so as to leave intermediate transverse solid portions of the
brush head which is thereby strengthened.
To enable the invention to be fully understood we will describe it by reference
to the accompanying drawing, in which:-
._
Figure 1 is a plan of a brush block or head having grooves formed along the
back according to the invention.
Figure
is a sectional elevation thereof; and
Figure 3 is a sectional elevation shewing the finished brush.
Figure 4 is a view similar to Figure 1, shewing the arrangement wherein the
grooves are divided longitudinally; and
Figure 5 is a sectional elevation of this modified form of brush block.
a is the brush block or head which is formed continuous with the handle a¹
in the usual manner and b, b are the holes which are bored partially through
the said head for the reception of the bristles as clearly shewn in Figure 2: c, c
are the grooves which are graved upon the other side of the back a to a depth
sufficient to meet the inner ends of the aforesaid holes b, b as clearly shewn in
Figures 2 and 5. d, d are the auxiliary holes which are bored in the brush

page_text: back on the side in which the grooves c, c are formed and near the end and the
shoulder thereof, respectively, the said holes being continuous with some of the
bristle holes b, b but of smaller diameter than these holes and being so arranged
that the grooves c shall extend between them thereby leaving a solid ungrooved
portion e and f respectively at the end and shoulder, which portions e and f are
not liable to split.
In the arrangement illustrated in Figures 4 and 5 the longitudinal grooves c, c
are interrupted so that a solid portion g of the brush head is left between them
transversely across the said head. To this end instead of merely boring two
sets of holes d, d at the two ends of the brush head we bore two additional
rows d, d of holes at about the centre of the said brush head and the grooves c, c
extend between the end and shoulder rows and the said middle rows thus leaving
the solid piece g between the two sets of holes d¹, d; this construction adds
strength to the brush back.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
Tooth brushes manufactured substantially as hereinbefore described and illus-
trated in Figures 1, 2 and 3 and 4 and 5 of the accompanying drawing.
1
T
500
5
tuoat 1800
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.