IMPROVE- THE MANUFACTURE OF GLASS
Year: 1847

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
HARTLEY,. of Sunderland, Glass Manufacturer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent .under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Seventh day of October,
One thousand eight hundred and forty-seven, in the eleventh year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said James Hartley, my exors, adiñors, and assigns, Her especial licence,
full power, sole privilege and.. authority, that I, the said James Hartley,
my exors, admors, and assigns; or such others as I, the said James Hartley,
my exors,. adñiors, .or assigns, should at any time agree with, and no others,
from time to time and at all times during the term of years, therein expressed,
should and lawfully, might make, use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, my Invention of "IMPROVE-
THE MANUFACTURE OF GLASS;" in which said Letters Patent-is
contained a proviso that I,,the said James Hartley, should cause a particular
description of the nature of my said Invention, and in what manner the same
is to be performed, by an instrument in writing under my hand and seal, to be
inrolled in Her Majesty's High Court of Chancery within six calendar months
next and immediately after the date of the said in part recited Letters

page_text: Patent, as in and by the same, reference being thereunto had, will more fully
and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
James Hartley, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, that is to say:―
My Invention has for its object an improved mode of manufacturing certain
descriptions of plate glass; and in order that my Invention may be most fully
understood and readily carried into effect, I will proceed to describe the means
pursued by me. I will, however, first state that the practise heretofore resorted
in making plate glass is to ladle the "melted metal" into a cistern according
to the size of sheet to be made, and then to heat the cistern for some hours,
when the glass or "metal" is poured on to a table and rolled out, and such
ladling into a cistern and heating the cistern is laborious and costly. Of late
years rough plate glass has come largely into use at railway stations and other
buildings, and such descriptions of rough plate glass have been made by the
ordinary process of glass-making above explained.
Now my Invention consists of dispensing with the costly processes of receiving
the melted "metal" into a cistern, and the additional heating consequent
thereon, and to ladle the "metal" directly from the pot on to the table, and
then to roll it out in the ordinary manner; and I apply one, two, or more
ladlesfull for making each sheet, and I find that the several ladlesfull do not
require to be poured on at the same time, but may be added towards the end
of the preceding quantity, and this is the manner of producing long sheets
which are comparatively narrow. By this mode of manufacture sheets of
rough plate glass may be produced at a considerable saving of labour and cost,
and when made they are annealed by me by piling, in the same manner as is
now practised in annealing crown and sheet glass, which avoids the use of the
costly furnaces now employed for annealing plate glass.
Having thus described the nature of my Invention, and the manner in which
the same is to be performed, I would have it understood that what I claim is,
the mode of manufacturing rough plate glass herein described, whereby the
"metal" is ladled directly from the pot, and the expence of ladling it into and
heating it in a cistern are avoided.
In witness whereof, I, the said James Hartley, have hereunto set my
hand and seal, this Fifth day of April, in the year of our Lord One
thousand eight hundred and forty-eight.
JAMES (L.S.) HARTLEY.

page_text: AND BE IT REMEMBERED, that on the Fifth day of April, in the
year of our Lord 1848, the aforesaid James Hartley came before our said Lady
the Queen in Her Chancery, and acknowledged the Specification aforesaid,
and all and every thing therein contained and specified, in form above
5 written. And also the Specification aforesaid was stamped according to
the tenor of the Statute made for that purpose.
Enrolled the Seventh day of April, in the year of our Lord One thousand