A NEW OR IMPROVED PROCESS FOR PROALATION FOR UNITING GLASS TO IRON AND OTHER MATERIALS
Year: 1874

page_text: LETTERS PATENT to Joseph Hartley, of Ormskirk, in the County of
Lancaster, for the Invention of "A NEW OR IMPROVED PROCESS FOR
PROVISIONAL SPECIFICATION left by the said Joseph Hartley at the
Office of the Commissioners of Patents, with his Petition, on the
8th September 1874.
I, JOSEPH HARTLEY, of Ormskirk, in the County of Lancaster, do
hereby declare the nature of the said Invention for "A NEW OR IMPROVED
PROCESS FOR UNITING GLASS TO IRON AND OTHER MATERIALS," to be as
follows:-
The uniting of glass to iron and other materials by means of a pre-
paration named by me glazune, in order to render glass available for
various general useful purposes in which it has not hitherto been

page_text: employed by a process of supplying it with uniform attachment to and
support by the iron and other materials to which it may be united, and
thereby reducing its liability to fracture when subject to pressure
and concussion, and entirely removing its liability to conchoidal
fracture.
The Invention is of application as follows:-Say for example it is
desired to erect a large tank or reservoir for holding liquor requiring to
be kept free from taint or impurity, and that the same is to be lined
with glass. If constructed of iron I take the separate sections of it and
I cut sheets of glass to the same size, I then place them in an oven or
furnace and heat them to about 250°-Fahrenheit. I lay each sheet of
glass on a level table and pour upon it glazune made liquid by heat, in
sufficient quantity to form a setting; I then take the iron segment and
lay it on, letting it settle by its own weight, or applying pressure as may
be required to ensure unión.. This process virtually metallizes the glass
and iron, forming a homogeneous body and possessing the combined
strength of the materials as a pressure bearing-structure, and when the
various segments thus prepared are put together a glass-lined vessel is
formed, the joints of which may be made by glazunc in the manner
herein-after set forth.
The utility of the Invention is not confined to the lining of vessels,
but is available for rendering glass applicable to any purpose in which it
will be useful, by having its fracturable character reduced or removed
by the principle of attachment to and support by the iron and other
materials by the means of the preparation named glazune. Amongst
other uses to which it can be applied may be named those purposes in
the erection of vessels to which my Invention of "Certain Improve-
ments in the Construction of Fermenting Vats, Settling Vats, Store
Vats, and Attemperators used by Brewers, Rectifiers, British Wine
Makers, and others," of 19th May 1874, Numbered 1768, has part
reference as preparing the glass by applying thereto a preparation of
glue so as to give an adhesive power for holding to cement, to its use
also as a surface for the working floors of malthouses or any other kind
of floor which taste or requirement may suggest. It may also make
glass available for billiard, bagatelle, or other tables which may require
the smooth glassy surface having solidity, which can be given by this

page_text: :
plan of support and attachment; it will also become available for a
variety of purposes in art, as a groundwork or backing for lettering,
painting, and designing on glass, as the glazune can be run over these
and the enamelled surrounding of the characters, which is the result,
renders them highly effective as well as rendering them unalterable
through or in exposure to weather; and for architectural embellishment
it will be found of great value in this respect..
I
'
The material named by me glazuue is a preparation of tar, and can be
obtained for some portion of the uses of this Invention by evaporating it
by heat to a degree which will render it incapable of running at a tem-
perature of 100° Fahr. It can also be obtained by resolving hard dry
asphalte in tar oil with the addition of a small quantity of common
glycerine. To either of these when boiling may be added a quantity of
limestone finely powdered, or litharge pounded fine, or any vitreous or
semi-vitreous dust, sufficient to give the glazune body according to the
purpose for which it is intended. These can be run in a molten state
on copper plates and formed into sticks of solder, which may be used for
the purpose of jointing, the glass, and can be applied by melting with hot
iron or copper, or a jet of flame.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Joseph Hartley in the Great Seal Patent Office on
the 26th February 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEги
HARTLEY, of Ormskirk, in the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighth day of September, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
eighth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me; the said Joseph Hartley, Her special licence that
I, the said Joseph Hartley, my executors, administrators, and assigns,
or such others as I, the said Joseph Hartley, my executors, adminis

page_text: trators, 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 Channel
Islands, and Isle of Man, an Invention for "A NEW OR IMPROVED
PROCESS FOR UNITING GLASS TO IRON AND OTHER MATERIALS," upon the
condition (amongst others) that I, the said Joseph Hartley, 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
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Joseph Hartley, 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 new or improved process consists in uniting glass to iron and
other materials by means of a preparation named by me glazune, in
order to render glass available for various general useful purposes in
which it has not hitherto been employed, by a process of supplying it
with uniform attachment to and support by the iron and other
materials to which it may be united, and thereby [reducing its liability
to fracture when subject to pressure and concussion, and entirely
removing its liability to conchoidal fracture.
The Invention is of application as follows:-Say for example it is
desired to erect a large tank or reservoir for holding liquor requiring to
be kept free from taint or impurity, and to this end the same is to be
lined with glass. If constructed of iron I would cast the separate
sections of it with a slightly grooved or [corrugated interior surface in
order to its having increased hold or grip of the uniting cement or
glazune. These I then prepare for bolting together by planing or
grinding the edges so that they are mechanically true, and afterwards
can be put together without twisting or straining. I then heat these
segments to a suitable degree and pour upon them a sufficient quantity
of glazuue so as to form a thin level bedding for the sheets of glass.

page_text: purposes contemplated by my Invention in whatever manner the same
may be applied.
In witness whereof, I, the said Joseph Hartley, have hereunto
set my hand and seal, this Nineteenth day of February, in
the year of our Lord One thousand eight hundred and seventy-
five.
Witness,
WALTER HALES,
Pentre Morgan,
Ellesmere,
Salop.
JOSEPH HARTLEY. (L.S.)