An Improved Glue Compound.
Year: 1890

page_text: Date of Application, 6th Nov., 1890-Accepted, 6th Dec., 1890
BIL BELD SIMULTICATION.
An Improved Glue Compound.
I, THOMAS OSBORNE BUTLER, M.D., of Chicago, Cook County, State of Illinois,
United States of America, 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 relates to glue compounds, that is to say, compounds whereof the
principal element is common glue prepared in the ordinary way from animal matter.
The glue in this compound being the vehicle carrying the several elements mixed
therewith as well as the main ingredient of the product obtained.
The glue compound produced by the mixing of the several ingredients herein named,
in the proportionate quantities herein described, and combined in the manner herein
set forth, is designed for use as and for all the purposes of common glue; the qualities
and attributes of such glue compound being varied at pleasure, within certain limits,
by varying the proportions of the several ingredients contained in said compound.
The principal objects which aro sought to be attained in the production of this glue
compound are :
To obtain a solid body adapted to be reduced to a homogeneous liquid mass when
placed in a suitable amount of water contained in a receptacle adapted therefor and
the proper degree of heat applied thereto which can be used in the joining of articles
together by being applied to the surface of such articles when in this liquid state, and
the articles pressed together in the ordinary way in making glued joints;
To obtain a glue compound having great tenacity whereby the articles joined and
glued therewith will adhere firmly together;
To obtain a glue compound well adapted for use in joining together articles to be
exposed to moisture and varying temperatures, by reason of its comparative impervious-
ness to water, when properly applied to such articles ;
To obtain a glue compound adapted to "set" quickly when applied, thereby
subjecting the mechanic using the compound to but little delay; and
Also to obtain a glue compound having extreme whiteness in the colour thereof,
whereby it is well adapted to be used in the construction of furniture, and in the joining
together of woods whereof a "natural wood finish" as it is termed, is to be afterwards
obtained.
In making this glue compound the proportions of the several ingredients may be
aried to a certain extent as will be hereinafter fully explained; but the manner in
which the several ingredients are mixed together to form and retain the homogeneous
body required is substantially the same, as hereinafter described, in whatever propor-
ionate quantities, these several ingredients are used.
This glue compound is composed of common glue, Paris white, and sulphur, mixed
ogether through the medium of water by the application of heat thereto, in the
ollowing manner :
A vessel containing water and preferably heated water, is obtained and to this
ater precipitate of sulphur is slowly added while the contents of the vessel are briskly
irred.
Sufficient of the precipitate of sulphur is added to the water, in this manner, to form
compound of about the consistency of molasses or syrup.
In a second vessel containing Paris white, sufficient water, either hot or cold,
added to make a compound which is also of about the consistency of molasses or
rup.

page_text: The glue to which the above described compounds are to be added is contained, in a
liquid condition, in a third and independent vessel.
It should be said that as glue is now commonly prepared for the market, sulphur is
at times employed for the purpose of clarifying it, and when merchantable glue is used
as one of the ingredients for making this glue compound if such glue contains sulphur,
much less of the sulphur compound hereinbefore described should be used than where
no sulphur is originally contained in the glue, it being the intention, in this Specifica-
tion, to state the total amount of sulphur to be contained in the completed product.
Furthermore, the amount of sulphur contained in the completed product may vary in
proportions of from.1 to 5 parts by weight of the dry sulphur powder, or even more,
to 100 parts by weight of the dry glue, according to the desired hardness of the glue
compound when "set." The smaller the amount of sulphur employed, to a given amount
of glue, the less capability of hardening will be obtained in the completed product.
It will be observed however, that the Paris white contained in the completed
product has a tendency to harden the glue, to render it impervious to water, and to
produce a white glue compound, and the amount of Paris white contained in the
completed product may also be varied in the manufacture of the glue compound in a
manner dependent somewhat upon the amount of sulphur employed, and upon the
particular qualities desired in the completed product. This variation in the amount
of Paris white can be roughly stated to be from 20 to 50 parts by weight of Paris
white in the dry powder to 100 parts by weight of dry glue.
In the glue compound which may be considered best adapted for general use, being
a glue compound having great whiteness of colour and tenacity of adhesiveness, well
adapted to resist moisture and to "set" quickly when used, the proportions of the
several ingredients in a dry state are, 100 parts by weight of glue, 47 of Paris white
and 3 of precipitate of sulphur.
Any two of the three compounds, to-wit: liquid glue, the sulphur compound and
the Paris white compound, may be first mixed together and the resulting compound
mixed with the third.
I will proceed to describe the manner in which the completed product, to-wit: the
compound glue, is obtained when the Paris white compound is first added to the liquid
glue and mixed therewith and the sulphur compound is then added to such mixture of
liquid glue and Paris white.
To a quantity of the liquid glue contained in a suitable receptacle the desired
quantity of the Paris white compound is added and the mixture is well stirred. The
Paris white compound when thus added to the liquid glue, may be either warm or
cold, but in order to expedite the making of the compound it will be found desirable
to have it warm.
After properly mixing the liquid glue and the Paris white compound, as described,
the sulphur compound added to the mixture, which is again well stirred so that the
several ingredients contained therein shall be well intermingled.
Heat is then applied to the mixture, contained in the receptacle, for about two
hours; the mixture being stirred at short intervals and held at near the boiling point,
but not allowed to boil, as boiling will have an injurious effect upon the product.
The mixture is then taken from the receptacle and treated as ordinary glue in the
further preparation thereof for the market."
When, as is possible, flour of sulphur is used in place of the precipitate of sulphur
in making the hereinbefore described sulphur compound, the same amount by weight
thereof is used as of the precipitate of sulphur. It will he found, however, when
using flour of sulphur that great difficulty will be experienced in making the sulphur
compound, owing to the difficulty of mixing flour of sulphur with any liquid.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what 1
claim is
A glue compound consisting of a base or body composed of common glue, with

page_text: sulphur and Paris white compounded therewith, substantially as and for the purpose
set forth.
Dated this 6th day of November 1800.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents for the Applicant.