An Improved Preparation or Material for Lacquering or Covering Surfaces.
Year: 1894

page_text: Date of Application, 7th Dec., 1894-Accepted, 16th Feb., 1895
COMPLETE SPECIFICATION.
An Improved Preparation or Material for Lacquering or
Covering Surfaces.
I DAVID MARCUS of 40 Charterhouse Square E.C. Merchant 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 has for its object the formation of varnishes or lacquering material
developed from the preparations more particularly described in my Patent
numbered 11029 of 1892.
I have found that in order to improve the said preparations and to make them
available for putting up in jars or bottles for ordinary use it is desirable that a
thinning material should be added to them and that more speedy drying power
should be obtained. The thinning material should however for covering purposes
be added in certain proportions lest the lacquers become too liquid and either run
when placed on a surface or fail to give a coating sufficiently protective.
In order to obtain the smoothness of lacquer the thinning material must be able
to assimilate with the lacquer.
I have found that camphor suitably assimilates with lacquer and that spirit of
camphor or the liquid known as camphor oil in certain proportions answer these
requirements.
In order to form my varnish I take 10 to 25 pints of spirits of camphor or
camphor oil to every hundred pints of lacquer.
I have found also that the above mentioned mixture does not dry save in a damp
atmosphere with such speed as is sometimes desirable and to ensure speed in
drying a combination of the mixture with permanganate of potassium in such
proportion as will not unduly affect the colour or hardness of the lacquer ought to
be made.
For obtaining this object I have to take 3 to 5 hundredths parts weight of
permanganate of potassium dissolved in 97 or 95 hundredths parts weight of spirits
of camphor or camphor oil and I add about 2 to 5 pints of the mixture so obtained
to the varnish composed of 10 to 25 pints of spirits of camphor or camphor oil
mixed with 100 pints of lacquer.
I have found also that the addition of oxide of zinc in or about the proportions
of 1 part oxide of zinc to 2 parts lacquer as mentioned in my Patent No. 11029
of 1892 affords more body in the covering than the preparations when used alone.
Having thus particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. A varnish or lacquering material formed of spirits of camphor or camphor oil
and the laquer preparations described in my Patent numbered 11029 of 1892
mixed in the proportions above described.
2. A varnish or lacquering material formed of spirits of camphor or camphor oil
and the lacquer preparations described in my Patent numbered 11029 of 1892 and
permanganate of potassium mixed as above described.

page_text: 3. A varnish or lacquering material formed by the mixture of oxide of zinc and
the lacquer preparations described in my Patent numbered 11029 of 1892.
Dated this Sixth day of December One thousand eight hundred and
ninety-four.
DAVID MARCUS.