Year: 1886

page_text: We JAMES BIDWELL and ARTHUR BIDWELL both of the Castle Mills, Axminster
in the County of Devon, Brush Manufacturers do hereby declare the nature of this
invention to be as follows:-
Our invention has for its object the production of an inexpensive cement or
composition which will burnish or polish to a bright gold or silver colour, to be
used for filling the grooves in the backs of tooth-brushes and for various other
purposes.
Our improved cement is composed of zinc white, coburg varnish, white hard
varnish, and mastic varnish combined with bisulphide of tin, mosaic gold or
powdered dutch foil when it is desired that the cement shall burnish to a bright
gold colour, or with silver powder or silver bronze when a silver coloured cement
is desired. These materials when combined in the proper proportions and well
pounded together form a moist ceinent which may be readily pressed or forced into
grooves, channels or other cavities, will in a few days set perfectly hard, and when
burnished or polished will present a bright gold or silver appearance.
The first four above-mentioned ingredients may be varied by the use of either or
all of the following alternative ingredients, viz:-oxide of zinc, powdered stone
lime, resin or rosin, and copal varnish.
Dated this 10th day of T
.ז.
1000
T. N. PALMER & Co.,
For the Applicants.

page_text: COMPLETE SPECIFICATION.
An Improved Cement or Composition for Various Purposes.
"
"
We JAMES BIDWELL and ARTHUR BIDWELL both of the Castle Mills, Axminster
in the County of Devon, Brush Manufacturers do hereby declare the nature of this
invention for AN IMPROVED CEMENT OR COMPOSITION FOR VARIOUS PURPOSES
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-.
Our invention has for its object the production of an inexpensive cement or
composition which will burnish or polish to a bright gold or silver colour, suitable
for filling the grooves in the backs of tooth-brushes and for various other purposes.
Our invention consists in combining bisulphide of tin, mosaic gold, powdered
Dutch foil, silver-powder or silver-bronze with other ingredients in such manner
and in such proportions as to form a moist cement which may be readily pressed
into grooves, channels or other small cavities, which in a few days will set perfectly
hard and which is susceptible of being burnished or polished to a bright gold or
silver colour.
According to one method of carrying out our invention, our improved cement is
composed of zinc white, white coburg varnish, white hard varnish, mastic varnish,
and copal varnish, combined with bisulphide of tin, mosaic gold, or powdered Dutch
foil when it is desired that the cement shall burnish to a bright gold colour; or
with silver-powder or silver-bronze when it is desired that it shall burnish to a
bright silver colour.
According to another method of carrying out our invention, instead of coburg
varnish, mastic varnish, white hard varnish and zinc white, we use oxide of zinc,
slaked lime reduced to a very fine powder by crushing and resin or rosin.
To prepare a cement which will burnish to a bright gold colour, according to the
method first above mentioned, we take the ingredients in about the following
proportions, viz;
8 ozs.
White coburg varnish
Copal varnish
Mastic varnish
White hard varnish
Zinc white
8029
1 oz.
->
oz.
2 lbs.
4 lbs.
In &
Bisulphide of tin, mosaic gold or powdered Dutch foil
These ingredients are all thoroughly mixed and pounded together when they
form a moist plastic cement, readily pressed into small crevices or channels.
few days the said cement sets dry and hard and will then burnish or polish to a
bright gold colour. For a cement to burnish to a bright silver colour about 4 lbs
of silver-powder or silver-bronze is substituted for the bisulphide of tin, mosaic
gold or powdered Dutch foil in the above formula.

page_text: According to the other method of preparing our improved ceinent we use the
following ingredients in about the proportion stated, vizi
Copal varnish
-
Very finely powdered slaked lime or whiting
Resin
Oxide of zinc
1 oz.
1 oz.
1 lb.
2 ozs.
1 lb.
Bisulphide of tin, mosaic gold or powdered Dutch foil
.These ingredients are placed in a pipkin and heated and the whole thoroughly
mixed. The cement can then be used and when set will burnish to a bright gold
colour as above described. For a silver-coloured cement a like quantity of silver-
powder or silver-bronze is substituted for the bisulphide of tin, mosaic gold, or
powdered Dutch foil in the above formula.
We do not confine ourselves to the precise ingredients and quantities above
stated as the same may be modified and varied without departing from our
invention, but,
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 :-
A plastic cement or composition which, when set, can be burnished or polished
to a bright gold or silver colour, consisting substantially of the ingredients herein
set forth in about the proportions specified.
JAMES BIDWELL.
ARTHUR BIDWELL