AN IMPROVED METHOD OR PROCESS OF -TREATING OR PREPARING AND REFINING GLUE
Year: 1868

page_text: LETTERS PATENT to Andrew Dietz, of the City of New York, in the
State of New York, in the United States of America, Glue Manu-
facturer, for the Invention of "AN IMPROVED METHOD OR PROCESS OF
-TREATING OR PREPARING AND REFINING GLUE."
Sealed the 28th October 1868, and dated the 28th April 1868.
PROVISIONAL SPECIFICATION left by the said Andrew Dietz at the
Office of the Commissioners of Patents, with his Petition, on the
28th April 1868.
, ANDREW DIETZ, of the City of New York, in the State of New
York, in the United States of America, Glue Manufacturer, do hereby
declare the nature of the said Invention for "AN IMPROVED METHOD OR
PROCESS OF TREATING OR PREPARING AND REFINING GLUE," to be as follows:-
This Invention relates to a method of treating and preparing glue
(after it has been made) by which the cheaper and inferior kinds and
qualities are at a trifling expence and in a short time rendered equal
to the better grades and qualities, and the glue is refined from impurities
and when in a fluid. or semi-fluid condition is rendered less liable to
become sour or mouldy; or to have its adhesive quality impaired..

page_text: The glue to be treated, and which may be of the quite poorer grades
and qualities, may be taken hot directly from the tanks in which it is
made, or it may be taken after it has been dried. In the latter case
it is first soaked in water, say, generally about three gills of water to
the pound, until it becomes like a jelly, after which it is heated to
about the boiling point. There is then poured into and thoroughly
mixed with the heated glue a mixture of rosin and oil, prepared as
herein-after mentioned, and the whole mass is kept simmering a little
time, and then set aside and allowed to cool and settle. For a pound
of the crude glue I generally take about three ounces of rosin and about
half an ounce of oil, which are melted and heated either separately or
together, and thoroughly mixed together. Linseed oil may be used,
but I prefer kerosene or some other of the hydrocarbons. Benzini
may also be made use of with the rosin. After the prepared article.
has settled it may be made into sheets, cakes, blocks, or pieces, and
dried like ordinary glue, or it may be retained in a fluid or semi-fluid
condition in cans or bottles, or other vessels, or in a soft state in boxes
or receptacles. The bottles or cans should not be corked, or the boxes
tightly covered until the article is thoroughly cooled.
Inferior glue when treated in the manner described is made in colour a
and in quality equal to or as good as the higher grades as ordinarily
made, and better by many grades than the glue originally taken to be
treated.
When required for use such prepared and refined glue can be reduced
to any consistency required by mixing water with it, which renders the
article very light coloured and almost milky when made quite thin.
The addition or mixture with such glue of a small quantity of carbolic
or wood acid will more certainly prevent it from souring or moulding,
or deteriorating in quality."
SPECIFICATION in pursuance of the conditions of the Letters Patent, 3
filed by the said Andrew Dietz in the Great Seal Patent Office
on the 28th October 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ANDREW
DIETZ, of the City of New York, in the State of New York, in the United
States of America, Glue Manufacturer, send greeting. .
8
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ANDREW
DIETZ, of the City of New York, in the State of New York, in the United
States of America, Glue Manufacturer, send greeting. .
8

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of April, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Andrew Dietz, Her special licence that I,
the said Andrew Dietz, my executors, administrators, and assigns, or
such others as I, the said Andrew Dietz, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term therein expressed, should
and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Ohannel Islands; and Isle of
Man, an Invention for "AN IMPROVED METHOD OR PROCESS OF TREATING OR
PREPARING AND REFINING GLUE," upon the condition (amongst others)
that I, the said Andrew Dietz, my executors or administrators, by
an instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Scal Patent Office within six calendar
months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Andrew Dietz, do hereby declare
the nature of my said 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 or discovery relates to an improved method of treating
and preparing glue after it has been made in the usual manner, by
means of which the cheaper and inferior kinds and qualities of glue are
made equal to the better and higher grades or qualities, and also at the
same time refined from impurities, and glue so treated when prepared
in a liquid or partially fluid condition is much less liable to become
sour or mould, and thereby have its adhesive quality weakened, and
such prepared glue will much longer retain its fluid or semi-fluid
condition.
•
My process or method of treating and preparing and refining glue is
substantially as follows:-Of the cheaper and inferior kinds or qualities
of glue I take any desired quantity and soak it in cold water until it
becomes like a jelly, using for such purpose about three gills of water
to the pound of glue. This operation of soaking the glue and thus

page_text: converting it into a jelly is only necessary, however, when hard dry glue
is to be treated and refined, when desired or convenient the glue may be
taken when hot directly from the vats in which made and the other in-
gredients hereafter mentioned immediately mixed and incorporated with
it. For a pound of the glue I then take about three ounces of rosin and
about half an ounce of oil, which are heated and melted either separately
or together, and then completely and thoroughly stirred and mixed
together. Linseed oil may be used, but I prefer kerosene or some other
of the hydrocarbons. Benzine may also be made use of and incorporated
with the rosin. The glue having been soaked in cold water as before
mentioned is then heated to the boiling point or is taken hot from
the tanks in which made, and the rosin and oil in a melted state are
then poured into and mixed with the heated glue and the whole kept
simmering for from five to ten minutes, the mass being also frequently
stirred, so that the several ingredients or substances shall be thoroughly
mixed and combined with each other, after which the mass is set aside
and allowed to cool and settle. The impurities deposit themselves at
the bottom in the form of a sediment, and there is produced a refined
and improved article of glue equal in color and in quality to the higher
grades, and better by very many grades than the glue originally taken
to be treated. After having been thus treated and refined the prepared
article can be made into sheets and dried like ordinary glue, or can be
retained in a fluid or partially fluid condition in cans or bottles, or in
a soft state in boxes. When, however, it is desired to retain it in a
semi-fluid condition in cans or bottles, or put it in boxes, such cans or
bottles should not be corked or the boxes. tightly covered until the
article has become thoroughly cooled. When required for use it is
reduced to any consistency required by adding water to it, the addition
of which renders it very light colored, the mixture being. at first almost
milky in appearance. The mixing and combining of the rosin and oil
with the glue not only purifies the glue but also has a preservative
effect, preventing the glue when made liquid for use so soon becoming
sour or moulding, and such prepared glue will also when made
thin retain its fluid condition for a much longer time than ordinary
glue, the water evaporating much more slowly. The exact proportion
above mentioned of rosin and oil to each other and to the pound of
glue, is not material though I have found that the combining such
articles in the proportions mentioned is in most cases highly satisfactory
and produces a very excellent and greatly improved product. The

page_text: proportions of such articles will necessarily vary somewhat according
to their condition or purity, and their proportions may also be varied
according to the particular use to which the product is to be applied;
for instance, when the glue is designed for preparing canvas for oil cloths
and similar uses a greater quantity of rosin can be used, and for such
use I have also found linseed oil very satisfactory, though for ordinary
uses I prefer to use petroleum or benzine. There should, however, in
all cases be suffloient rosin and oil mixed with the glue to purify and
improve the product as described, but not enough to injure or weaken
its adhesive qualities. The mixing with this article, either while being
or after it has been prepared, of a small quantity of carbolic or wood
acid, about a teaspoonful to the gallon of glue, will more certainly prevent
its moulding or souring or deteriorating in quality.
What is claimed and is desired to be secured by Letters Patent is,
treating glue with rosin or other proper resinous substance and petroleum
or hydrocarbon or fixed oils, substantially as and for the purposes set
forth. Combining with glue so treated and prepared carbolic or wood
acid, substantially as and for the purposes set forth.
In witness whereof, I, the said Andrew Diets, have hereunto
my hand and seal, this First day of October, in the year of our
set
1000