IMPROVEMENTS IN PAINT BRUSHES
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said George Harry Nash at the
Office of the Commissioners of Patents on the 8th December 1883:
GEORGE HARRY NASH of Birmingham in the county of Warwick "IMPROVEMENTS
IN PAINT BRUSHES"
This invention relates to improvements in that class of paint brushes in which
the knot of bristles is bound or held together between a metal core or ring and an
outside metal ferrule.
Such brushes as hitherto constructed. have been attended with the disadvantage
(amongst others) that the bristles were liable to become loose from the inefficient
means employed for holding or binding them together.
The object of my improvements to obviate this objection by my improved
means of securing or holding the knot of bristlės.
In carrying out my invention I employ a metal ring forming a core and an outer
metal ferrule as have hitherto been employed, but I form the outer ferrule with an
interior projection or rim at a short distance from its bottom edge, the said rim or
projection passing all round the interior surface of the ferrule; the ferrule below
the said rim or projection is bent inwards so that the interior diameter of the
turned in end of the ferrule shall be the same as that of the interior surface of the
hereinbefore described rim or projection.
The knot of bristles is inserted in the ferrule constructed as above described and
I then insert in the centre of the knot a core consisting of a metal ring. The core
having been thus inserted I then by means of suitable tools turn over or bend
outwards the ends of the ring forming the core so as to press and bind the bristles
between the said core and the above described rim and bottom edge of the ferrule,
the core being in such a position that its bottom end after having been turned over
will be in the same plane as the turned in end of the ferrule.
In order to make the ferrule as light as possible without decreasing its strength
I prefer to make it somewhat taper in the interior so that the metal shall be
somewhat thicker at its bottom end where the strain caused by expanding the core
occurs.
The handles are fixed to the brushes in any suitable manner

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Harry Nash in the Patent Office on the 7th June 1884.
GEORGE HARRY NASH, of Birmingham, in the county of Warwick "IMPROVE-
MENTS IN PAINT BRUSHES
"
This invention relates to improvements in that class of paint brushes in which
the knot of bristles is bound or held together between a metal core or ring and an
outside metal ferrule.
Such brushes as hitherto constructed have been attended with the disadvantage
(amongst others) that the bristles were liable to become loose from the inefficient
means employed for holding or binding them together.
The object of my improvements is to obviate this objection by my improved
means of securing or holding the knot of bristles.
In carrying out my invention I employ a metal ring forming a core and an outer
metal ferrule as have hitherto been employed, but I form the outer ferrule with an
interior projection or rim at a short distance from its bottom edge, the said rim or
projection passing all round the interior surface of the ferrule; the ferrule below
the said rim or projection is bent inwards so that the interior diameter of the
turned in end of the ferrule shall be the same as that of the interior surface of the
herein before described rim or projection.
The knot of bristles is inserted in the ferrule constructed as above described and
I then insert in the centre of the knot a core consisting of a metal ring. The core
having been thus inserted I then by means of suitable tools turn over or bend
outwards the ends of the ring forming the core so as to press and bind the bristles
between the said core and the above described rim and bottom edge of the ferrule,
the core being in such a position that its bottom end after having been turned over
will be in the same plane as the turned in end of the ferrule.
In order to enable my invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing in which figure 1, represents an
elevation and figure 2, a longitudinal section of a paint brush constructed according
to my invention; figure 3, is a view of the brush from the handle end of the
ferrule, the handle being removed; figures 4, and 5, are an elevation and an end
view respectively shewing the metal ring to form the core of the paint brush.
Similar letters in all the figures represent similar parts.
a, is the outer metal ferrule and b, is the interior projection or rim at a short
distance from the bottom edge of the same and passing all round the interior surface
of the ferrule a; c, is the turned in end of the ferrule a, below the rim or
projection b, and having its interior diameter the same as that of the interior
surface of the rim or projection b, as shewn; d, is the knot of bristles which is
inserted in the ferrule a,; e, is the core consisting of a metal ring as clearly shewn
in figures 4, and 5, which ring is inserted in the centre of the knot of bristles d,
and the ends of the same are turned over or bent outwards as shewn in figure 2,
by means of suitable tools so as to press and bind the bristles d, between the core e,
and the rim or projection b, and bottom edge c, of the ferrule a, the core e, as shewn
in figure 2, being in such a position that its bottom end after having been turned
over is in the same plane as the turned in end c, of the ferrule a; f, is the handle
of the paint brush fixed to the ferrule a, by the rivets g, or the handle may be fixed
in any other suitable manner.
In order to make the ferrule a, as light as possible without decreasing its strength
I prefer to make it somewhat taper in the interior, as shewn, so that the metal shall
be somewhat thicker at its bottom end where the strain caused by expanding the
core e, occurs.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be carried into effect what I
claim is:-
Firstly. The use in a paint brush of an outer ferrule provided with an interior
projection or rim the bottom of the said ferrule being turned in, in combination
with an expanded or turned over metal core for securing or holding the knot of
bristles in the manner substantially as hereinbefore described and represented in
the accompanying drawing.
Secondly. The manufacture and use of the improved paint brushes as herein-
before described and represented in the accompanying drawing.
In Witness whereof I the said George Harry Nash have hereto set my hand and
seal this sixth day of June 'in the year of our Lord one thousand eight hundred
and eighty four
GEORGE HARRY NASH (L.S.)