MAKING PAINT WITH THE REFUSE FROM ARSENIC FURNACES, AND FOR USING THE SAID REFUSE WITH TAR OR PITCH FOR THE PRESERVATION OF WOOD AND IRON."
Year: 1881

page_text: LETTERS PATENT to Daniel Brown, of Trelawney Road, Falmouth, and
Richard Michell, of Combo Hill, near Devoran, both in the County of
Cornwall, for an Invention of "MAKING PAINT WITH THE REFUSE FROM
ARSENIC FURNACES, AND FOR USING THE SAID REFUSE WITH TAR OR
PITCH FOR THE PRESERVATION OF WOOD AND IRON."
PROVISIONAL SPECIFICATION left by the said Daniel Brown and
Richard Michell at the Office of the Commissioners of Patents on the
31st May 1881.
DANIEL BROWN, of Trelawney Road, Falmouth, and RICHARD MICHELL, of
Combe Hill, near Devoran, both in the County of Cornwall. "MAKING PAINT
WITH THE REFUSE FROM ARSENIC FURNACES, AND FOR USING THE SAID
REFUSE WITH TAR OR PITCH FOR THE PRESERVATION OF WOOD AND
IRON."
The object of this Invention is for making paint with the refuse from arsenic
furnaces, and for using the said refuse with tar or pitch for the preservation of
wood and iron.
This arsenic refuse is obtained from the crude arsenic after burning; in fact it is
the ash remaining in the calciner. It is strongly impregnated with particles of
arsenic; there are also portions of protoxide of zinc, small portions of tin, &c.
It is a great preserver of iron and wood, and a destroyer of all vegetation.
The arsenic refuse, which is the basis of the paint, is ground and mixed with
ochre and with oils, or it is incorporated with tar or pitch.
The advantage in using this paint will be conspicuously shown when it is applied
to the bottoms of iron or wood vessels as a preventative of the growth of weeds
and the adhesion of barnacles.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Daniel Brown and Richard Michell in the Great Seal Patent
Office on the 30th November 1881.
DANIEL BROWN, of Trelawney Road, Falmouth, and RICHARD MICHELL, of
Combe Hill, near Devoran, both in the County of Cornwall. "MAKING PAINT
WITH THE REFUSE FROM ARSENIC FURNACES, AND FOR USING THE. SAID
REFUSE WITH TAR OR PITCHI FOR THE PRESERVATION OF WOOD AND
IRON."
The object of this Invention is for making paint with the refuse from arsenic
furnaces, and for using the said refuse with tar or pitch for the preservation of
wood and iron.
This arsenic refuse is obtained from the crude arsenic after burning; in fact it is
the ash or refuse remaining in the calcinor. It is strongly impregnated with
particles of arsenic; there are also portions of protoxide of zinc, small portions
of tin, &c. It is a great preserver of iron and wood, and a destroyer of all
vegetation.
The arsenic refuse, which is the basis of the paint, is ground and mixed with
ochre and with oils, or it is incorporated with tar or pitch.
The advantage in using this paint will be conspicuously shown when it is applied
to the bottoms of iron or wood vessels as a preventative of the growth of weeds
and the adhesion of barnacles.
In practically carrying out our Invention, we prefer to grind or crush the arsenic
refuse in water, but it might be ground or crushed in a dry state. The refuse
reduced to a fine powder runs or is conveyed into tanks as it leaves the mill or
crusher and is allowed to settle; the water is drawn or let off from the sediment,
and the sediment is dried either by exposure to air or by evaporating off the
moisture remaining in it. The dry powdered material so obtained is mixed to the
required consistency with oil, and it may be ochre or other suitable coloring
material. Compounds of lead, zinc, and other mineral substances commonly
employed in the making of paint may also be added. A suitable mixture for most
purposes is obtained by mixing three parts of the dry powderod arsenic refuse
with one part of boiled oil and one of ochre. It will of course be necessary to
admix driers as usual with the paint before it is used; the paint also might be
made up without the addition of coloring matter.
As above stated, the dry powdered arsenic refuse may be used in combination
with tar or pitch, or both combined. About three parts powdered arsenic refuse
to one part of tar or pitch are suitable proportions to usc.
Having thus described our Invention, and the manner of performing the same,
we would have it understood that we claim,-
The making of paint with the refuse from arsenic furnaces, and the combination
of such material with tar or pitch, substantially as and for the purposes herein
before described.
In witness whereof, wo, the said Daniel Brown and Richard Michell, have
hereunto set our hands and seals, this Twenty sixth day of November, in
the year of our Lord One thousand eight hundred and eighty onc.