IMPROVEMENTS IN PREPARING OR COATING BACS AND MATERIAL FOR MAKING BAGS, AND FOR OTHER PURPOSES
Year: 1881

page_text: LETTERS PATENT to Alexander Melville Clark, of 53, Chancery Lane, in the
County of Middlesex, Patent Agent, for an Invention of "IMPROVEMENTS IN
PREPARING OR COATING BACS AND MATERIAL FOR MAKING BAGS, AND FOR
OTHER PURPOSES." A communication from abroad by Isaac Taylor Tichenor,
of Auburn, in the County of Lee and State of Alabama, United States of
America.
PROVISIONAL SPECIFICATION left by the said Alexander Melville Clark
at the Office of the Commissioners of Patents on the 27th June 1881.
ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of
Middlesex, Patent Agent. "IMPROVEMENTS IN PREPARING OR COATING BAGS
AND MATERIAL FOR MAKING BAGS, AND FOR OTHER PURPOSES." [A com-
munication from abroad by Isaac Taylor Tichenor, of Auburn, in the County of
Lee, and State of Alabama, United States of America.]
The object of this Invention is to provide new and improved material for
making bags which is impervious to atmospheric moisture, is not destroyed as
easily by the corrosive action of the contents of the bag, and is thus rendered
stronger and more durable than the bags in use heretofore.
According to this Invention I employ a coarse cloth such as a burlap and cover
the same on both sides with a mixture of clay and tar, so that the cloth will bo
thoroughly impregnated with the material.
The clay either ground or in lumps is mixed with pine tar or gas tar until the
mixture has the consistency of cream or of a paste. More or less clay may be
mixed with a greater or less quantity of tar according to the size of the meshes of
the fabric. Thus if the fabric is very coarse the mixture must contain a
comparatively greater quantity of clay, that is, it must be stiff, but if the fabric is
of a finer quality the mixture must be more liquid, that is to say, less clay must be
mixed with the tar. Glue or adhesive material that will not be decomposed by the
action of the air may be used in place of the tar. The bags (or the bagging material)
are immersed in this mixture of adhesive material and clay, or this mixture is applied
on both sides of the bagging material with a brush until it is impregnated therewith
and both sides of the bagging material are covered by a layer of this mixture of
adhesive material and clay. Bags made of this material are especially adapted for
transporting lime, cement, fertilizers, guano, &c. This prepared canvass may also
be used for making tents, for roofing, and for making hose for conveying water.
It may further be used for making fire and water proof cotton bale coverings.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alexander Melville Clark in the Great Scal Patent Office on the
24th December 1881.
"
ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of
Middlesex, Patent Agent. IMPROVEMENTS IN PREPARING OR COATING BAGS
AND MATERIAL FOR MAKING BAGS AND FOR OTHER PURPOSES." A communication
from abroad by Isaac Taylor Tichenor, of Auburn, in the County of Lec, State of
Alabama, United States of America.
The object of this Invention is to provide new and improved material for making
bags which is impervious to atmospheric moisture, is not destroyed as easily by
the corrosive action of the contents of the bag, and is thus rendered stronger and
more durable than the bags in uso heretofore.
The Invention consists in a coarse cloth such as a burlap, which is covered on
both sides with a mixture of clay and tar, so that the cloth will be thoroughly
impregnated with the material.
In the accompanying Drawings Figure 1 is a detail sectional elevation of any
ordinary piece of burlap; Figure 2 is a detail sectional elevation of a piece of the
samo treated with a mixture of tar and clay. Clay either ground or in lumps is
mixed with pine tar or gas tar until the mixture has the consistency of cream or of
a paste. More or less clay may be mixed with a greater or less quantity of tar
according to the size of the meshes of the fabric. Thus if the fabric is very coarse,
the mixture must contain a comparatively greater quantity of clay, that is, it must
be stiff, but if the fabric is of a finer quality the mixture must be more liquid,
that is to say, less clay must be mixed with the tar. Glue or adhesive material
that will not be decomposed by the action of the air may be used in place of
the tar.
The bags (or the bagging material) A. are immersed in this mixture of adhesive
material and clay, or this mixture is applied on both sides of the bagging material
with a brush until it is impregnated therewith and both sides of the bagging
material are covered by a layer B of this mixture of adhesive material and clay.
The bags treated in the manner described are impervious to atmospheric moisture,
and are not so easily destroyed by the corrosive action of the contents. Besides
they are stronger and more durable than the bags in use at present. Bags mado
of this material are especially adapted for transporting lime, cement, fertilizers,
guano, &c. This prepared canvas may also be used for making tents, for roofing,
and for making hose for conveying water. It may further be used for making fire
and water proof cotton bale coverings.
Having described the nature of the said Invention and the manner of performing
the same, I declare that what I claim as the Invention to be protected by the
hereinbefore in part recited Letters Patent is,-
1st. The method substantially as herein shown and described of treating bagging
material consisting in applying a coating of a mixture of clay and tar on both the
inner and outer surfaces of the material, as and for the purpose set forth.
2nd. As an improved article of manufacture, bagging made substantially as hercin
shown and described with a coating of a mixture of clay and tar, as set forth.
3rd. The within described composition of matter for treating bagging material
consisting of a mixture of tar and clay, as set forth.
In witness whereof, I, the said Alexander Melville Clark, have hereunto get
my hand and seal, this Twenty fourth day of December, A.D. 1881.