AN IMPROVEMENT IN THE MANUFACTURE OF MOULDED ARTICLES WHEN USING VITREOUS MATERIALS
Year: 1856

page_text: LETTERS PATENT to Henry Chance, of Birmingham, Glass Manufacturer,
for the Invention of "AN IMPROVEMENT IN THE MANUFACTURE OF MOULDED
ARTICLES WHEN USING VITREOUS MATERIALS."
Sealed the 8th July 1856, and dated the 29th January 1856.
PROVISIONAL, SPECIFICATION left by the said Henry Chance at the
Office of the Commissioners of Patents, with his Petition, on the 29th
January 1856.
I, HENRY CHANCE, of Birmingham, Glass Manufacturer, do hereby declare
the nature of the Invention for "AN IMPROVEMENT IN THE MANUFACTURE OF
MOULDED ARTICLES WHEN USING VITREOUS MATERIALS" to be as follows:-
This Invention consists in moulding articles from pulverized vitreous matter,
such as cullet or waste glass, used either alone or mixed with sand or other
substances, and afterwards heating the article so moulded to cause the vitreous
matter to agglomerate into a compact mass.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Chance in the Great Seal Patent Office on the
28th July 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
CHANCE, of Birmingham, Glass Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of January, in the year of our Lord
One thousand eight hundred and fifty-six, in the nineteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Henry Chance, Her special licence, that I, the said Henry Chance, my
executors, administrators, and assigns, or such others as I, the said Henry
Chance, 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 Channel
Islands, and Isle of Man, an Invention for "AN IMPROVEMENT IN THE
MANUFACTURE OF MOULDED ARTICLES WHEN USING VITREOUS MATERIALS," upon the
condition (amongst others) that I, the said Henry Chance, 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 Henry Chance, do hereby declare the
nature of the said Invention, and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following state-
ment thereof, that is to say:--
This Invention consists in moulding articles from pulverized vitreous matter,
such as cullet or waste glass, used either alone or mixed with sand or other
substances, and afterwards heating the article so moulded to cause the vitreous
matter to agglomerate into a compact mass.
Having thus stated the nature of my Invention, I will proceed more fully
to describe the manner of performing the same.
The Invention is thus carried out, viz': Various kinds of pulverized vitreous
matter may be used, but I prefer the cullet or waste glass produced in the
manufacture of ordinary window glass. The glass is first pulverized by being
ground to the desired degree of fineness, and is used either alone or mixed
with sand or other suitable material; the proportion which I find to answer

page_text: best is three parts of ground glass to one of sand or other suitable material,
but the proportion may be varied according to the size and nature of the
articles to be made. The ground glass or mixture of glass and other
materials is moistened with water sufficiently to enable the particles when
compressed to hold together, and the mass is then pressed into a mould of
wood, metal, or other suitable material of the required shape. The mould is
to be so formed that it may be easily detached or delivered from the mass
inside. When released from the mould the moulded article is carefully dried
in a suitable kiln at a low temperature. When all the moisture has been
dried off or expelled, the article is immersed in and covered over with sand,
to regulate the heat and to support any parts which might if unsustained give
way during the burning. The kiln is then gradually brought up to such a
temperature that the vitreous matter shall be partially fused or agglomerated
into a compact mass.
In witness whereof, I, the said Henry Chance, have hereunto set my
hand and seal, this Twenty-fifth day of July, in the year of our Lord
One thousand eight hundred and fifty-six.
HENRY CHANCE. (L.S.)
Witness,
FRANKLIN TAYLOR,
Clerk to Messrs. Chance Brothers & Co.
Glass Works, n Birmingham.