MENTS IN THE MANUFACTURE OF ROLLED ROUGH PLATE GLASS
Year: 1878

page_text: LETTERS PATENT to John James Kayll, of the Firm of James Hartley & Co.,
of Sunderland, in the County of Durham, for the Invention of
MENTS IN THE MANUFACTURE OF ROLLED ROUGH PLATE GLASS."
IMPROVE-
PROVISIONAL SPECIFICATION left by the said John James Kayll at the
Office of the Commissioners of Patents on the 6th November 1878.
JOHN JAMES KAYLL, of the Firm of James Hartley & Co., of Sunderland, in the
County of Durham. "IMPROVEMENTS IN THE MANUFACTURE OF ROLLED ROUGH
PLATE GLASS."
This Invention has for its object improvements in the manufacture of rolled
rough plate glass.
Heretofore rolled rough plate glass has been produced by ladling or pouring
molten glass on to a metal table and spreading it evenly by passing a roller over it,
straight fillets or strips of metal being secured along the surface of the table, upon
which a roller travels, and according to the thickness of which the substance of the
glass is determined. The metal table used has also been planed to bring it to a
Hat surface, and the parallel lines produced by the planing tool have been left. upon
the surface of the table so that the sheets of glass formed upon it have been
correspondingly marked with parallel lines. Heretofore the lines upon the metal
table have always run in the direction of its length, as it is easier and cheaper to
plane the tables in this direction, and as the table was thus marked with longi-
tudinal parallel lines the sheets of glass also were formed with the lines running in
the direction of their length. When such sheets of glass have subsequently been
cut up into panes of varying sizes, as required for use, there has been considerable
waste, as it is required that the lines on the glass should be in the direction of the
length of the panes. To obviate much of this waste I form the lines on the surface
of the metal table crosswise of the table instead of longitudinally, and the guides
Price Gd 1

page_text: which rest upon the table in front of the roller and travel forward with it, and
which serve to retain the glass poured on to the table in front of the roller and
limit the width of the sheet of glass produced, I-set-at-a-distance apart according to
the length of the panes required.
The sheets of glass formed on the table are thus marked with transverse instead
Lof_with_longitudinal parallel lines and are of a width equal to the length of panes
required, so that the sheets inay be cut crosswise into panes of any desired width
-with-comparatively_little_waste.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John James Kayll in the Great Seal Patent Office on the 6th
May 1879.
JOHN JAMES KAYLL, of the Firm of James Hartley & Co., of Sunderland, in the
County of Durham. "IMPROVEMENTS IN THE MANUFACTURE OF ROLLED ROUGH
PLATE GLASS."
This Invention has for its object improvements in the manufacture of rolled
rough plate glass.
Heretofore rolled rough plate glass has been produced by ladling or pouring
molten glass on to a metal table and spreading it evenly by passing a roller over it,
straight fillets or strips of metal being secured along the surface of the table, upon
which a roller travels, and according to the thickness of which the substance of the
glass is determined. The metal table used has also been planed to bring it to a
flat surface and the parallel lines produced by the planing tool have been left upon
the surface of the table, so that the sheets of glass formed upon it have been
correspondingly marked with parallel lines. Heretofore the lines upon the metal
table have always run in the direction of its length, as it is casier and cheaper to
plane the tables in this direction, and as the table was thus marked with longi-
tudinal parallel lines the sheets of glass also were formed with the lines running in
the direction of their length. When such sheets of glass have subsequently been
cut up into panes of varying sizes, as required for use, there has been considerable
waste, as it is required that the lines on the glass should be in the direction of the
length of the panes. To obviate much of this waste I form the lines on the surface
of the metal table crosswise of the table instead of longitudinally, and the guides
which rest upon the table in front of the roller and travel forward with it, and
which serve to retain the glass poured on to the table in front of the roller, and
limit the width of the sheet of glass produced, I set at a distance apart according to
the length of the panes required. The sheets of glass formed on the table are thus
marked with transverse instead of with longitudinal parallel lines, and are of a
width equal to the length of panes required, so that the sheets may be cut crosswise
into panes of any desired width with comparatively little waste.
In order that my Invention may be clearly understood, I have shewn in the
Drawing hereunto annexed a machine such as is used in the manufacture of rolled

page_text: rough plate glass, but having the table formed with parallel lines across instead of
lengthwise of its face.
Figure 1 is a plan view, and Figure 2 a side view of the machine.
A is the bed
or table with parallel lines across its face. B is the roller resting upon two straight
fillets C secured along the surface of the table. D, D, are guides which rest upon
the table in front of the roller and serve to limit the width of the sheet of glass
produced; they can be set at any required distance apart, according to the width of
sheet required. At each end of the roller are hand wheels E by which it can be
turned and caused to roll along the table; at the end of the roller are also toothed
pinions F which gear with toothed racks formed along the sides of the frame which
carries the table A. These racks and pinions serve to keep the roller correctly in
position across the table.
Having thus described the nature of my Invention, and the manner of performing
the same, I would have it understood that I claim the manufacture of sheets of
rolled rough plate glass with parallel lines across their face at right angles to the
length of the sheet, substantially in the manner herein before described.
In witness whereof, I, the said John James Kayll, have hereunto set my hand
and seal, this Third day of May, in the year of our Lord One thousand
eight hundred and seventy nine.
ATTNT T TVT T
JOHN J. KA
TZ AXT T
(L.S.)