An Improved Method of Producing Rippled, Chequered, or other Patterns or Designs upon Rolled Plate and Sheet Glass, and Apparatus therefor.
Year: 1887

page_text: Date of Application, 16th Apr., 1887
Complete Left, 14th Jan., 1888.
Complete Accepted, 17th Feb., 1888
An Improved Method of Producing Rippled, Chequered, or other
Patterns or Designs upon Rolled Plate and Sheet Glass, and
Apparatus therefor.
We, ANTHONY DIXON BROGAN and ANDREW MURRAY MALLOCH, both of Firhill,
Glasgow, in the County of Lanark, Glass Manufacturers, do hereby declare the
nature of this invention to be as follows :-
Our invention relates to the manufacture of rolled plate and sheet or window glass
having upon one surface rippled or wave-like or other patterns or designs and it
consists of a novel method and means for producing such patterns or designs upon
the surface of plates or sheets which have previously been rolled or blown and formed
in the ordinary way the glass plates or sheets being under our invention, either taken
while sufficiently hot and plastic from the casting table whereon they are rolled, or,
when the plates or sheets are already in a cool state, heated in a "hot kiln" wherein
the glass is brought to a plastic or semi-plastic condition, thence run through one or
more pairs of rolls, one or more of which rolls has formed upon it or them a counter-
part of the pattern or design to be produced on the glass, and then delivered into an
annealing kiln wherein the plates or sheets are permitted to stiffen.
In carrying out the invention under one modification we employ a hot kiln having.
a low roof or crown whereby the hot flame employed in heating the glass plate or
sheet is directed upon its surface, and between said kiln and an ordinary annealing
kiln we fit one or more pairs of rolls.
A long narrow slit or doorway is formed in each kiln opposite the rolls and the
plate or sheet, which is put into the hot kiln in front, preferably as delivered from
the casting table and while hot, is after being heated to the requisite degree passed
out through the doorway to and between the rolls which grip and draw it through
and deliver it at the opposite side into the annealing kiln.
Under a modification of the invention the "hot kiln" above referred to is dispensed
with and the rollers by means of which the rippled or ornamented surface is imparted
D077

page_text: to the plate of glass are either fitted upon the end of the casting table or are fitted in
front of the opening in the annealing kiln and the glass plates when rolled on the
casting table are upon cooling sufficiently run directly through the impressing rolls
into the annealing kiln.
One of the rollers or one of each pair of rolls is suitably engraved or has impressed
upon it a design or pattern corresponding to that to be produced upon the surface of
the glass. The upper roller may bear only by its own gravity upon the plate or
sheet passing under it or it may be pressed down by springs adapted to yield under
variations of thickness of the plate or sheet, and in dealing with rolled plate the
under roller is by preference so formed so that the pattern or design may be
impressed upon the lower side of the plate which is roughened by contact with the
cold casting table and the upper side may remain smooth. In this way rippled,
chequered or similarly ornamented glass may be produced with one surface which is
quite smooth and resembles polished plate; and by the method described of imparting
the ornamented surface to glass the difficulty which is experienced in rolling molten
glass upon in the threads upon rough points and protuberances on the roller is
the casting table by the use of a heavy impressed roller owing to the glass
being
altogether avoided.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.

page_text: COMPLETE SPECIFICATION.
An Improved Method of Producing Rippled, Chequered, or other
Patterns or Designs upon Rolled Plate and Sheet Glass, and
Apparatus therefor.
We, ANTHONY DIXON BROGAN and ANDREW MURRAY MALLOCH, both of Firhill
Glasgow, in the County of Lanark, Glass Manufacturers, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Our invention relates to the manufacture of rolled plate and sheet or window glass
having upon one surface rippled or wavelike or other patterns or designs and it
consists of a novel method and means for producing such patterns or designs upon
the surface of plates or sheets which have previously been rolled or blown and
formed in the ordinary way the glass plates or sheets being under our invention
either taken while sufficiently hot and plastic from the casting table whereon they are
rolled, or from the flattening kiln in the case of sheet glass; or, when the plates or
sheets are already in a cool state, reheated in a "hot kiln " wherein the glass is
brought to a plastic or semi-plastic condition thence run through one or more pairs of
roils, one or more of which rolls has formed upon it or them a counterpart of the
pattern or design to be produced on the glass, and then delivered into a lear or
annealing kiln wherein the plates or sheets are permitted to stiffen.
In carrying out the invention under one modification we employ a hot kiln
such as is represented in vertical section at A in figure 1 of the accompanying
drawings the said hot kiln having a low roof or crown A¹, whereby the hot flame
employed in heating the glass plate or sheet which is placed upon the floor of the kiln
is directed upon its surface; and between said kiln A and an ordinary annealing
kiln B we fit one or more pairs of rolls CC¹.
A long narrow slit or doorway a, b, is formed in each kiln opposite the rolls C, C¹,
and the plate, which is put into the hot kiln through a doorway a¹ in front, preferably
as delivered from the casting table and while hot is after being heated to the requisite
degree passed out through the doorway a, to and between the rolls C, C¹, which grip
and draw it through and deliver it at the opposite side into the lear or annealing
kiln B the glass being supported in its passage to the rolls by a suitable table or
plate D on the framework E carrying the rolls and being drawn from the rolls by a
travelling bogie F in the annealing kiln. In dealing with sheet glass the usual
flattening kiln replaces the hot kiln above described.
Under a modification of the invention the "hot kiln "above referred to is dispensed
with and the rollers C, C by means of which the rippled or ornamented surface is
imparted to the plate of glass are either fitted upon the end of the casting table F as
represented in side and end elevations at figures 2 and 3 or are fitted in front of the
opening in the annealing kiln ; and the glass plates when rolled on the casting table
are upon cooling sufficiently run directly through between the impressing rolls CC'

page_text: into the lear or annealing kiln or on to a trolly or bogie by which the sheet or plate
is delivered to the lear or annealing kiln.
One of the rollers CC or one of each pair of rolls is suitably engraved or has
impressed upon it a design or pattern corresponding to that to be produced tho
upon
surface of the glass, and in dealing with rolled plate the under roller C is by
preference formed with the required design or pattern on it so that the pattern or
design may be impressed upon the lower side of the plate which is roughened by
contact with the cold casting table, and the upper side may remain smooth. In this
way rippled chequered or similarly ornamented glass may be produced with one
surface which is quite smooth and resembles polished plate. The upper roller C may
bear only by its own gravity upon the plate or sheet passing under it or it may be
pressed down as shown at c by springs adapted to yield under variations of thickness
of the plate or sheet. By the method described of imparting the ornamented surface
to glass the difficulty which is experienced in rolling molten glass upon the casting
table by the use of a heavy impressed roller owing to the glass being drawn up in
fine threads upon rough points and protuberances on the roller is altogether avoided.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :-
1. The method herein before described of producing designs or patterns upon rolled
plate or sheet glass by relicating the glass in a hot kiln to bring it to a semiplastic
state and then running it through between rollers in transferring it to an annealing
kiln substantially as set forth.
2. The method herein before described of producing designs or patterns upon rolled
plate by rolling the glass on a casting table in the ordinary way and whilst hot drawing
it through rolls in transferring it from the casting table to an annealing kiln
substantially as set forth.
3. The arrangement and combination for the purpose set forth of the hot kiln A
lear or annealing kiln B and rollers CC substantially as described with reference to
figure 1 of the annexed drawings.
4. The combination with the casting table A of the rollers CC¹ mounted on the
end thereof substantially as described with reference to figures 2 and 3 of the annexed
drawings.
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.