Improvements in Brushes for Cleaning Davy or Safety Lamps and the like.
Year: 1889

page_text: Date of Application, 13th Sept., 1889
Complete Specification Left, 3rd Dec., 1889-Accepted, 18th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Brushes for Cleaning Davy or Safety Lamps and
the like.
We, ALFRED DICKINSON, of 198, Springmill Street, Bradford in the County of York,
Mechanic, WALTER ELMSLEY, of 101 Thornton Road, Bradford aforesaid, Brush
Maker, and EMANUEL SEED, of 21, Knowles Street, Tong Street, Bradford aforesaid,
Mechanic do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in hand or machine brushes for cleaning
Davy or safety lamps and the like and its object is to provide a more efficient and
durable brush and also to facilitate repairing such brushes at the part exposed to
the greatest wear and tear.
The said brushes are commonly made in a cylindrical form with wooden stocks
and difficulty is experienced in getting the bristles at the end of the brush sufficiently
thick or dense so as to thoroughly clean out the lamps and stand the wear as it is
obvious that the end of the brush passed into the lamps does the bulk of the work and
is exposed to the greatest strain.
Our said improvements consist in providing a detachable crown at the end of the
stock preferably of metal and adapted to be densely covered with bristles.
To carry out our invention we preferably make the stock of twisted wire with the
bristles bound between the several twists so as to arrange them in a helical or spiral
form. One end of said wire stock is extended to form a convenient handle or it is
tightly twisted into a shank adapting it to be fixed in a machine. The other end
of said stock is made taper or provided with a screw thread to receive the above
mentioned detachable crown which is provided with a corresponding socket and is
thickly filled with bristles radiating from its sides and end and adapted to reach
every part of the interior of the lamp. The said crown is made hollow behind or
with an annular recess so as to allow the bristles to be securely "drawn " in such
crown.
Instead of having one taper end the wire stock may be divided so as to fit it into
two sockets in the crown and in either case pins or small cotters or catches may be
used to secure the end or ends of the stock in the crown.
Dated this 19th dor of Santambar 1880
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in Brushes for Cleaning Davy or Safety Lamps and
the like.
We, ALFRED DICKINSON, of 198 Springmill Street, Bradford in the County of
York, Mechanic, WALTER ÉMSLEY, of 101 Thornton Road, Bradford aforesaid, Brush
Maker, and EMANUEL SEED, of 21, Knowles Street, Tong Street, Bradford aforesaid,
Mechanic, 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 hand or machine brushes for cleaning
Davy or safety lamps and the like and its object is to provide a more efficient and
durable brush and also to facilitate repairing such brushes at the part exposed to the
greatest wear and tear.
The said brushes are commonly made in cylindrical form with wooden stocks,
and difficulty is experienced in getting the bristles at the end of the brush sufficiently

page_text: thick or dense so as to thoroughly clean out the lamp and stand the wear as it is
obvious that the end of the brush passed into the lamp does the bulk of the work and
is exposed to the greatest strain.
Our said improvements consist in providing a detachable crown at the end of the
stock preferably of metal and adapted to be densely covered with bristles.
To carry out our invention we preferably make the stock of twisted wire with the
bristles bound between the several twists so as to arrange them in a helical or spiral
form. One end of said wire stock is extended to form a convenient handle or it is
tightly twisted into a shank adapting it to be fixed in a machine. The other end of
said stock is made taper or provided with a screw thread to receive the above
mentioned detachable crown which is provided with a corresponding socket and is
thickly filled with bristles radiating from its sides and end, and adapted to reach
every part of the interior of the lamp. The said crown is made hollow behind or
with an annular recess so as to allow the bristles to be securely "drawn" in such
crown.
Instead of having one taper end the wire stock may be divided so as to fit it into
two sockets in the crown and in either case pins or small cotters may be used to
secure the end or ends of the stock in the crown.
Reference is now made to the accompanying sheet of drawings forming a part of
this specification in which similar letters of reference indicate corresponding parts in
each of the figures.
-
Figure 1, is a longitudinal elevation of one of our improved brushes.
Figure 2 is a longitudinal view of the wire stock without the bristles and with the
crown represented in diametrical section, screwed to the end thereof.
Figure 3, is an end view of the crown.
The stock A is formed of wire preferably four-ply and the bristles B are placed
parallel between the wires before twisting, with two wires or strands on each side.
The stock A is then tightly twisted which firmly binds the bristles between the
strands so that they project on either side and are arranged in the double spiral
form shown in figure 1.
The metallic crown C has a screwed socket D in the centre adapted to receive the
screwed end E of the stock A so as to firmly connect the stock and crown. The said
crown is represented with three rows of bristles drawn into holes drilled at suitable
angles in the crown so that the bristles in the first row B¹ radiate from the crown
at right angles to the stock, the second row B2 approximately at forty five degrees
with the stock and the inner row B³ almost parallel with the stock.
The end of the stock is left straight so that it can be centred in a machine for
rotating it, or it is extended and bent or divided so as to form a convenient
handle.
Having now particularly described and ascertained the nature of our said Inven-
tion, and in what manner the same is to be performed, we declare what we
claim is :-
1. A brush for cleaning safety lamps having a detachable crown, substantially as
herein shown and described and illustrated in the accompanying drawings.
2. A brush for cleaning safety lamps having a stock of twisted wire and a detach-
able crown, substantially as herein shown and described and illustrated in the
accompanying drawings.
Dated this 2nd day of December 1889.
DRACUP & NOWELL,
Bradford, Agents.