A BASE MATERIAL FOR PAINT OR COVERING
Year: 1882

page_text: "
LETTERS PATENT to George Earl Church of 8 Summer Street Providence
Rhode Island in the United States of America for an Invention of "A BASE
MATERIAL FOR PAINT OR COVERING Communicated to him by Atwater
E Brockett of Branford in the County of New Haven and State of Connecticut
in the United States of America.
PROVISIONAL SPECIFICATION left by the said George Earl Church at the
Office of the Commissioners of Patents on the 18th September 1882.
GEORGE EARL CHURCH of 8 Summer Street Providence Rhode Island in the
United States of America A BASE-MATERIAL FOR PAINT OR COVERING a comuni-
cation to him by Atwater E. Brockett of Branford in the County of New
Haven and State of Connecticut in the United States of America
The object of this invention is to make a strong durable and elastic covering for
metal wood or other substances which shall yield when the article to which it is
applied expands or contracts under changes of temperature or by its own flexibility.
The base-material is composed of Pine tar or Stockholm tar Caoutchuc gum
(rubber) gutta percha gum, gum shellac, gum opal, and Linseed Oil combined in
the proportions and manner hereafter specified-In carrying out my invention
I proceed as follows:-Into a kettle of suitable capacity I place about 26 gallons
pine tar, redistilled and strained, or Stockholm tar, boil slowly until all water is
evaporated Now increase the temperature gradually and add about 3 pounds
Caoutchuc gum (rubber) cut fine; continue to increase the heat until the gum begins
to lose form and become stringy, care being taken to stir constantly, then add about
3/2 pounds gutta percha cut fine and continue boiling until all these ingredients
become perfectly liquified and amalgamated. I then allow the temperature to fall to
a little below the heat when. boiling commences and then introduce about 6 pounds
gum shellac slowly and stir the mass until the shellac is thoroughly amalgamated
with the rest of the mass; the temperature is then lowered so that the strength of

page_text: the shellac will not be impaired and I then introduce about one gallon copal oil
varnish and continue stirring-When the varnish is properly amalgamated with
the mass I pour into it about 10 gallons of linseed oil which has been heated to
nearly the same temperature; it is poured in carefully and slowly in order to avoid
precipitation ensuing and the mass constantly stirred and allowed to cool to below
the scalding point say to about 115° to 110°-It is then ready for mixing with
additional oil, japans, leads or other varnishes or with any liquid known to the
painters art except animal oils with which it will not assimilate. It is of cardinal
importance that each of the ingredients should be brought to a higher degree of
heat than the paint or product will be exposed to in its use from the rays of the
sun or other ordinary causes

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Earl Church in the Great Seal Patent Office on the
14th March 1883.
"
GEORGE EARL CHURCH of 8 Summer Street, Providence, Rhode Island in the
United States of America "A BASE MATERIAL FOR PAINT OR COVERING
A Communication to me by Atwater E. Brockett of Branford in the County of
Newhaven and State of Connecticut in the United States of America
The object of this invention is to make a strong durable and elastic covering for
metal, wood, or other substances which shall yield when the article to which
it is applied expands, or contracts under changes of temperature or by its own
flexibility.
The base material is composed of Pine tar or Stockholm tar, Caoutchuc Gum
(Rubber) Gutta Percha Gum, Gum Shellac, Gum Copal, and Linseed Oil combined
in the proportions and manner hereafter specified.
In carrying out my invention I proceed as follows:-Into a kettle of suitable
capacity I place about 26 gallons Pine tar redistilled and strained, or stockholm
tar, boil slowly until all water is evaporated, now increase the temperature
gradually and add about 3 pounds caoutchouc gum (rubber) cut fine, continue to
increase the heat until the gum begins to lose form and become stringy, care being
taken to stir constantly: then add about three and a half pounds Gutta Percha cut
fine and continue boiling until all these ingredients become perfectly liquified and
amalgamated. I then allow the temperature to fall to a little below the heat when
boiling commences and then introduce about six pounds gum shellac slowly, and
stir the mass until the shellac is thoroughly amalgamated with the rest of the
mass; the temperature is then lowered so that the strength of the shellac will not
be impaired, and I then introduce about one gallon Copal Oil Varnish and continue
stirring. When the varnish is properly amalgamated with the mass I pour into it
about ten gallons of Linseed Oil which has been heated to nearly the same
temperature as the mass-It is poured in carefully and slowly in order to avoid
precipitation ensuing and the mass constantly stirred and allowed to cool to below
the scalding point say to about 115° to 110° It is then ready for mixing with
additional oil, japans leads or other varnishes or with any liquid known to the
painters art except animal oils with which it will not assimilate. It is of cardinal
importance that each of the ingredients should be brought to a higher degree of
heat than the paint or product will be exposed to in its use from the rays of the
sun or other ordinary causes.
I claim the base material for paint or covering substantially as berein described
In witness whereof I hereunder set my hand and seal this thirteenth day of
1000
GEORGE EARL CHURCH (L.S.)