Improvements in the Manufacture of 66 Stocks" and " Backs" for Brushes.
Year: 1890

page_text: Date of Application, 7th Nov., 1890
Complete Specification Left, 6th Aug., 1891-Accepted. 26th Sept.. 1891
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of
66 Stocks" and " Backs" for
Brushes.
I, WILLIAM LORD BALLIN HINDE, of Priorsleigh, Stratford Road, Birming-
ham, in the County of Warwick Manufacturer, do hereby declare the nature of this
invention to be as follows:-
"
In the methods of manufacturing "stocks" and backs" of hair and other
brushes hitherto in use the necessary operations are accomplished almost entirely
by hand labour, and are therefore somewhat tedious and expensive. The perforated
" stock after insertion of the bristles is glued or screwed to the "back," both
"stock" and "back" being oblong pieces of wood of the required thickness, and
then the outline of the brush and its handle is cut out by bow saw or band saw.
The brush is then finished and polished.
The object of this present invention is to dispense with skilled hand labour in the
manufacture of the "stocks" and "backs" by producing the "stocks” and “backs"
accurately by mechanical means.
In carrying the invention into effect blanks or slips of wood from which the
stocks" and "backs" are to be made are prepared of the necessary thickness and
each blank in turn is placed upon a cutting block and by means of a cutting knife
of the required configuration the "back or "stock" is cut out of the blank by the
action of a suitable press driven or actuated by power or hand.
In this manner a
completely and accurately shaped" stock or
blank at one blow and a very large number of "stocks
"back" is produced from each wood
" and "backs" are con-
veniently and economically produced in a rapid manner.
A stock so produced is perforated in the usual manner, filled with bristles and
then glued or screwed to the back which has already been, by the means herein-
before described, accurately shaped by the same or a similar knife. Both back
and stock thus being of a regular and exactly similar form fit well together, and
leave the minimum of hand labour in trimming previous to polishing. The knife
used in cutting out is shaped within so as to allow sufficient clearance for the stocks
and backs to pass readily through the interior that is the interior surface bevels
slightly outwards in order to clear the wood when cut and so as to produce a clean
and accurately cut article.
Suitable wood of a moderate thickness is chosen for the operation as it will be
eadily understood that for the efficient application of this process with a stamping
knife the wood must be neither too hard nor too thick.
Brushes constructed from parts prepared in the manner hereinbefore described
hay be built up of one, two, three or more pieces glued together and if desired veneers
or brushmaking may also be so cut. Various modified arrangements may be adopted
ut an essential feature of the invention is retained in all modifications and that
ssential feature is the process of cutting out backs, stocks or similar parts for the
anufacture of brushes from wood by one blow or by a stamping process.
Dated this 6th day of November 1890.
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for Applicant.

page_text: COMPLETE SPECIFICATION.
"
Improvements in the Manufacture of "Stocks” and Backs for
Brushes.
1, WILLIAM LORD BALLIN HINDE, of Priorsleigh, Stratford Road, Birming-
ham, in the County of Warwick, Manufacturer, 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 :-
In the methods of manufacturing "stocks" and "backs" of hair and other
brushes hitherto in use the necessary operations are accomplished almost entirely
by hand labour, and are therefore somewhat tedious and expensive. The perforated
stock after insertion of the bristles is glued or screwed to the back; both stock and
back being oblong pieces of wood of the required thickness, and then the outline of
the brush and its handle is cut out by bow saw or band saw. The brush is then
finished and polished.
The object of this present invention is to dispense with skilled hand labour, in
the manufacture of the stocks and backs by producing the stocks and backs
accurately by mechanical means.
Referring to accompanying sheet of drawings,
Figure 1 is a perspective view of a cutting knife used in the manufacture of
these articles.
Figure 2 is a section of the knife, and
Figures 3 and 4 are stocks produced by cutting as described.
In carrying my invention into effect, blanks or slips of wood from which the
stocks and backs are to be made are prepared of the necessary thickness and each
blank in turn is placed upon a cutting block, and by means of a cutting knife of
the required configuration as shown in Figure 1, the back or stock, Figure 3, is cut
out of the blank by the action of a suitable press driven or actuated by power or
hand. In this manner a completely and accurately shaped stock or back is pro-
duced from each wood blank at one blow and a very large number of stocks and
backs are conveniently and accurately produced in a rapid manner. The stocks
and backs are of the same configuration as shown in Figure 3, but differ in thick-
ness and sometimes in the nature of the wood used. The section of knife preferred
for the work is shown at Figure 2 and it is to be observed that the distance c d is
greater than a b so as to give the knife clearance as it passes through the wood and
also to enable the stocks or backs to be readily passed through the interior of the
knife. This taper or clearance may be varied in amount but that shown in Figure 2
is suitable.
A stock so produced is perforated in the usual manner, filled with bristles and
then glued or screwed to the back which has already been, by the means herein-
before described, accurately shaped by the same or a similar knife, both back and
stock thus being of a regular and strictly similar form fit well together and leave
the minimum of hand labour in trimming previous to polishing. The knives used
in cutting out are shaped within so as to allow sufficient clearance for the stocks
and backs to pass readily through the interior, that is the interior surface bevils
slightly outwards in order to clear the wood when cut and so as to produce a clean
and accurately cut article as already described.
Suitable wood of a moderate thickness is chosen for the operation, as it will be
readily understood that for the efficient application of this process with a stamping
knife, the wood must be neither too hard nor too thick.
Brushes constructed from parts prepared in the manner hereinbefore described
may be built up of one, two, three or more pieces glued together, and if desired
veneers for brushmaking may also be so cut. Various modified arrangements may
be adopted but an essential feature of the invention is retained in all modifications,
and that essential feature is the process of cutting out backs, stocks or similar

page_text: parts for the manufacture of brushes from wood by one blow or by a stamping
process.
It will be readily understood that many forms of brush back or stock may be
produced in this manner and Figure 4 shows another configuration of stock or back
such as may be readily produced.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
In the manufacture of stocks, backs or veneers for brushes stamping out the said
stocks, backs or brushes mechanically at one blow by knives or tools of the required
outline, substantially as herein before described and illustrated in the accompanying
sheet of drawings.
DL
1
1001
MARKS & CLERK,
13, Temple Street, Birmingham, Agents for the Applicant.