Improvements in Brushes.
Year: 1888

page_text: Improvements in Brushes.
We, CHARLES MAW, of 7 to 12 Aldersgate Street, in the City of London, Surgeon's
Instrument Maker, and JOSEPH JOHN ASHBURNER, of 390 Hackney Road, in the
County of Middlesex, Tooth Brush Maker, do hereby declare the nature of this
invention to be as follows:-
Our improvements relate especially to brushes which are to be used as tooth brushes
and which are formed partly or entirely of flexible points or tongues of vulcanized
india rubber.
In tooth brushes formed of points or tongues of vulcanized india rubber as
heretofore ordinarily made the points or tongues have been made to stand out from
a back of the same material and this back has been made hollow and open at one
end to allow of the end of a bone or other handle being inserted into it and the two
have been held together by reason of the india rubber back being flexible and made
to embrace tightly the end of the handle so passed into it.
The object of our invention is to provide a better means of retaining the brush
upon its handle. For this purpose we form the back of the vulcanised india rubber
brush hollow as heretofore and open at one end for a bar at the end of the handle
to be inserted into it and in addition we form the handle with two other parallel
bars to lie along the outer sides of the back of the india rubber brush one along one
side and the other along the other side. Each side of the hollow back thus gets
held between the central bar and one of the side bars of the handle. In order to
hold the extremities of the side bars closely against the india rubber back we also
pass a rivet crosswise through them from one side of the brush to the other. Or in
place of side bars we may form the handle with a bar to lie over the back of the
india rubber brush and this bar at its end may also be rivetted to the bar which
passes into the interior of the hollow back.
Similarly when the brush is made with a row or rows of tongues of vulcanised
india rubber surrounding its two sides and end whilst the central portion is made

page_text: from bristles or such like, we form the handle in the same way and carry the bristles
by the central bar at the end of the handle and carry a row or rows of vulcanised
india rubber tongues on a back of vulcanised india rubber formed to pass through
the spaces between the central and side bars of the handle and over the back and
end of the central bar-and we also similarly cause the extremities of the side bars of
the handle to be held closely to the sides of the vulcanised india rubber back piece
by a rivet passed crosswise through them.

page_text: We, CHARLES MAW, of 7 to 12 Aldersgate Street, in the City of London Surgeon's
Instrument Maker, and JOSEPH JOHN ASHBURNER, of 390 Hackney Road, in the
County of Middlesex, Tooth Brush Maker, 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 :-
Our improvements relate especially to.brushes which are to be used as tooth brushes
and which are formed partly or entirely of flexible points or tongues of vulcanized
india rubber.
In tooth brushes formed of points or tongues of vulcanized india rubber as
heretofore ordinarily made the points or tongues have been made to stand out from a
back of the same material and this back has been made hollow and open at one end.
to allow of the end of a bone or other bandle being inserted into it and the two
have been held together by reason of the india rubber back being flexible and made
to embrace tightly the end of the handle so passed into it.
The object of our invention is to provide a better means of retaining the brush upon
its handle. For this purpose we form the back of the vulcanised india rubber brush
hollow as heretofore and open at one end for a bar at the end of the handle to be
inserted into it and in addition we form the handle with two other. parallel bars to
lie along the outer-sides of the back of the india rubber brush one along one side
and the other along the other side. Each side of the hollow back thus gets held
between the central bar and one of the side bars of the handle. In order to hold
the extremities of the side bars closely against the india rubber back we also pass a
rivet crosswise through them from one side of the brush to the other.. Or in place
of side bars we may form the handle with a bar to lie over the back of the india
rubber brush and this bar at its end may also be rivetted to the bar which passes
into the interior of the hollow back.
Similarly when the brush is inade with a row or rows of tongues of vulcanised
india rubber surrounding its two sides and end whilst the central portion is made
from bristles or such like, we forin the handle in the same way and carry the bristles
by the central bar at the end of the handle and carry a row or rows of vulcanised
india rubber tongues on a back of vulcanised india rubber formed to pass through
the spaces between the central and side bars of the handle and over the back and end
of the central bar-and we also similarly cause the extremities of the side bars of the
handle to be held closely to the sides of the vulcanised india rubber back piece by a
rivet passed crosswise through them.
The drawing annexed shews examples of brushes constructed according to our
invention.
Figure 1 is a side view and Figure 2 a back view of a brush formed as described
with a hollow back carrying tongues of vulcanized india rubber and with the portion
of the handle which is to be secured to the back slotted so that it may fit both inside
the back and also along its two sides. Figure 3 is a back view of the handle and
Figure 4 a cross section through the line 1, 1, figure 1.

page_text: Figure 5 is a side view and Figure 6 a back view of a similar brush with the
portion of the handle which is to be attached to the back slotted so as to fit along
the underside as well as inside the back. Figures 7 are side and back views of the
handle and Figure 8 a cross section on the line 2, 2, figure 5.
Figure 9 is a side view of a brush formed similarly to the brush shewn at figure 1
but with the central portion made with bristles. Figure 10 is a face view of the
handle and bristles carried by it-Figure 11 is a cross section through the line 3, 3,
figure 9.
In Figures 1, 2, 3 and 4 A is the handle. B the vulcanized india rubber back
carrying tongues of the same material. A¹ A are the portions of the handle which
fit along the exterior of the two sides of the india rubber back. C is a pin passed
crosswise through the extremities of the portions 'A' and through the india rubber
back and slightly rivetted, over at its ends. These holding pins may be formed of
fine wire such as used for the manufacture of pins but wire of any other suitable metal
may be used for the purpose.
In Figures 5, 6, 7 and 8 the parts are marked with the same letters of
reference.
In Figures 9, 10 and 11 A is the handle. B the india rubber back carrying
tongues of the same material A¹ the parts of the handle which go along the exterior
of the.two sides of the rubber back, the pin for holding the parts together and D
the tufts of bristles secured in the ordinary manner to the handle and forming the
central portion of the brushing surface.
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 :-
1. A brush formed with a back of vulcanized india rubber and rubber tongues
projecting therefrom and with the portion of the handle which is to be secured to the
india rubber back slotted to pass both inside and outside of the back and with a pin
or pins passed through to hold the parts together substantially as described.
2. The construction of brushes substantially as herein before described.
Dated this 20th day of T1000