Improvements in Compounds for Coating and Finishing Walls and the like.
Year: 1886

page_text: Date of Application, 24th Dec., 1886.
Specification Accepted, 1st Feb., 1887.
Improvements in Compounds for Coating and Finishing Walls
and the like.
I, ENOS AGUSTUS BRONSON, of Wymore, Gage County, Nebraska, in the United
States of America, Plasterer, do hereby declare the nature of my invention, and in
what manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
My invention relates to a composition of matter for coating and finishing walls, and
it consists of the several ingredients compounded in the manner and proportions
hereinafter fully set forth.
The object of my invention is to provide a composition for coating and finishing
walls which shall be entirely free from lime and will not shrink, crack, or expand, and
which can be applied to any character of groundwork of the wall or other surface
which it is desired to finish, without regard to the state of the weather or the condition
of the groundwork or wall.
1 have discovered that by the use of my invention a wall or ceiling is rendered rat
and vermin proof, and the particles thereof adhere so closely together that it is
impossible for them to cut or gnaw through the wall, and my compound is proof
against moisture and frost, and is unaffected by the same, thus increasing its strength
and durability.
My compound consists of the following ingredients, in substantially the proportions
hereinafter specified, to wit; a vehicle of plaster-of-paris, ten parts, sand four parts,
Keene's cement, two parts, glue four or five quarts, marble dust five parts. In pre-
paring my compound for use I take ten parts of common plaster-of-paris, to use it for
a body or vehicle, and mix therewith four parts of the compound of fine white sand,
two parts of Keene's cement and five parts of marble dust. All of these ingredients
are in a thoroughly pulverized and dry state, and the proper quantity of glue, in a
semi-fluid state, is then poured into the mass, after which the several ingredients are
intimately commingled and mixed together by agitation, sufficient water being added
to make the compound or mixture plastic, so that it can be readily applied to a wall or
ceiling, or groundwork of common plaster on the wall or ceiling. The glue serves to
hold the material from setting, and the admixture of marble dust to the compound
gives the white and attractive appearance thereto.

page_text: In applying my compound to the wall or ceiling a groundwork or base of plaster-
of paris, sand, whiting, and glue is first applied and allowed to set. Then, to finish
off or face up with, dental plaster, mixed in the same proportion as the base with
sand, glue, marble dust, and Keene's cement, is used to give a neat and attractive
appearance.
My improved compound can he readily applied, and will adhere to common mortar
or other groundwork of a wall, and when it is applied to wire lathing it renders the
inside of a building or structure fire proof.
The exact proportions and quantities of the ingredients will be varied or changed
according to the state or the condition of the walls upon which it is to be applied and
the quality of the sand used.
My improved compound is a very durable and hard finish, is proof against and will
withstand the action of moisture and frost, can be readily applied to a wall regardless
of its condition and the state of the weather, will not crack, swell, chip or shrink, can
be cleansed with brush and water without damaging or defacing the surface of the wall,
and can be executed upon stucco groundwork, so that rats or other vermin cannot
petrate the wall to which it is applied.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed, I declare that what I claim is —
1. The herein described composition of matter for finishing walls or ceilings,
consisting of a vehicle of plaster of paris, sand, gluc, Keene's cement, and, if desired, a
suitable coloring matter, substantially as set forth.
2. The herein described composition of matter for coating and finishing walls,
consisting of a suitable vehicle of plaster-of-paris, sand, glue, Keene's cement, and
marble dust, in substantially the proportions specified.
E. A. BRONSON.
Pp. Herbert & Co.,
67, Strand, W.C.,
Agents to Applicant.