Improvements in Copper Tied Paint, Distemper, and White-wash Brushes.
Year: 1899

page_text: Date of Application, 11th Dec., 1899-Accepted, 13th Jan., 1900
COMPLETE SPECIFICATION.
Improvements in Copper Tied Paint, Distemper, and White-wash
Brushes.
I, WILLIAM SIMPSON, Brush Maker, of Marylands Drive, Halfway, Paisley
Road, Glasgow, do hereby declare the nature of this invention and in what
nanner the same is to be performed, to be particularly described and ascertained
n and by the following statement:―
This invention relates to paint, distemper, and white-wash brushes in which
the bristles are tied by copper wire and it consists in using full length bristles
merely for the outside of the "knot" and shorter bristles for the centre of the
knot and filling up the space caused by the use of the shorter bristles by seg-
mental pieces or plugs of any suitable material.
At present it is usual to employ full length bristles for the entire knot.
In order that the said invention may be properly understood I have hereunto
appended an explanatory sheet of drawings, whereon,
Fig. 1 is a vertical cross section of the brush.
Fig. 2 is a view of the brush with one half of the bristles removed. The view
is taken at right angles to that at Fig. 1.
Fig. 3 is an inverted plan view of the segmental pieces.
Fig. 4 is a side view of one of the segmental pieces.
Fig. 5 is a view of another form of segmental piece.
with full length bristles a
In the manufacture of the brush I form the "knot
at the outside and short length bristles b at the inside-the difference in length
between the bristles a and b should be equal to the depth of the body of the
segmental pieces (c c¹) as shown at Fig. 1. The knot is now tied and the space
at its upper end, caused by the centre bristles being shorter than the outside
bristles, is filled up by inserting the segmental pieces or plugs c, c¹, into the root
of the knot. When so inserted the upper surfaces of the two segments c, c¹, are
The knot is now dipped into
flush with the upper ends of the outside bristles a.
As will
cement in the usual manner and thereafter the handle e is inserted in the knot
with its blade c¹ between the segments c, c¹, as clearly shown at Fig. 1.
be seen (Figs. and 2) when the handle is so inserted the upper surfaces of the
The knot is now tied,
segments c, c¹, bear against the shoulders on the handle e.
by the wire f, securely in place in the usual manner.
The segmental pieces may be mere plain pieces of gutta percha, vulcanite, or
other suitable material cut or moulded to the proper shape and having bevelled
edges as shown at Fig. 5, or I may make the segment with pegs or projections d
5 which pass in between the bristles 6 and serve to hold them together and also
to hold the segments in place in the knot.
The wiring f binds the whole firmly and securely together.
Although, under this invention, short bristles are used for the inside of the
"knot" the brush is not, practically speaking, thereby deteriorated as the out
10 side or working portion of the brush consists of bristles of the full length.
By the use of short length bristles for the centre of the brush and of the seg

page_text: mental pieces to compensate for the shortness of these bristles the cost of manu-
facture of copper tied paint, distemper, and white-wash brushes can be con-
siderably cheapened.
The invention is equally applicable when other materials than bristles are used
for making the brushes.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I consider novel and desire to claim is:-
In the manufacture of copper tied paint, distemper, and white-wash brushes
using shorter bristles (or substitutes for bristles) for the centre of the "knot"
than for the outside and filling up the space caused by the use of such shorter
bristles (or substitutes for bristles) by means of segmental pieces or plugs provided
or not with pegs or projections, substantially as herein before described.
Dated this 7th day of December 1899.
H. D. FITZPATRICK,
100, Wellington Street, Glasgow, Agent.