Improvements in Apparatus for Rolling Glass Plates to Produce Rippled, Dappled, Vermicular, Checkered, or other Patterns or Designs thereon.
Year: 1887

page_text: Date of Application, 13th Dec., 1887
Complete Specification Left, 12th Sept., 1888
Complete Specification Accepted, 12th Oct., 1388
Improvements in Apparatus for Rolling Glass Plates to Produce
Rippled, Dappled, Vermicular, Checkered, or other Patterns or
Designs thereon.
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:-
This Invention relates to the manufacture of rolled plate glass having rippled, dappled,
vermicular, clicckered or other patterns or designs produced in relievo or in intaglio
upon its surface by means of engraved or similarly prepared rollers and the improve-
ments have for object to make provision whereby the desired impression may be
imparted to the surface or surfaces of the glass during or immediately after the usual
operation of rolling on the casting table and before removal from the table, reheating
of the rolled plate to bring it to a plastic state for receiving the impression being
dispensed with.
::
To that end we employ a casting table on which are fitted in addition to the usual
plain roller, a pair or two or more pairs of rollers carried in a movable framing
adapted to travel over the table in rear of the plain roller, the surface of the rolled
plate being impressed by passing through between the pair or the several pairs of said
auxiliary rollers. The auxiliary rollers are fitted one vertically over the other and in
rolling the glass to impress it, it is raised from the table and led between the rollers
by means of an inclined guide plate secured between " gnus on the framing and is
thence led over a similar guide plate at the rear and back on to the table. One or
both of the pair or of each pair is or are engraved or formed with a rippled, dappled
or other surface corresponding to that of the design or pattern to be produced on the
surface of the glass, but by preference the lower roller or rollers alone is or are so
formed in order that the lower side of the glass plate which is roughened by contact
with the casting table may have the desired pattern or design impressed upon it whilst
the upper sile is rolled smooth. The framing with the auxiliary roller is carried upon
the table frame by toothed wheels centred in the framing and gearing with the usual
C
.

page_text: rack on each side of the casting table, the said toothed wheels being rotated upon the
framing being traversed over the table and imparting rotary motion in the reverse
direction to the impressing roller on whose axis are toothed wheels in gear with the
wheels gearing into the rack, whilst the upper roll is driven by frictional contact with
the glass on which it bears by its own weight alone, or by the aid of springs or
weights.
The framing carrying the impressing rollers may be traversed over the table inde-
pendently of the usual casting roller by means of chains or bands passing round
pulleys at either or both ends or by other means, or it may be connected by links or
otherwise to the casting roller in such a manner as to be drawn over the table in rear
of the casting roller.
D
CRUIKSHANK & FAIRWEATHER,
62, Saint Vincent Street, Glasgow,
Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Rolling Glass Plates to Produce
Rippled, Dappled, Vermicular, Checkered, or other Patterns or
Designs thereon.
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 :-
This Invention relates to the manufacture of rolled plate glass having rippled,
dappled, vermicular checkered or other patterns or designs produced in relievo or in
intaglio upon its surface by means of engraved or similarly prepared rollers and the
improvements have for object to make provision whereby the desired impression may
be imparted to the surface or surfaces of the glass during or immediately after the
usual operation of rolling on the casting table and before removal from the table,
reheating of the rolled plate to bring it to a plastic state for receiving the impression
being dispensed with.
To that end we employ, as represented in side and end elevations at figures 1 and 2
of the accompanying drawings a casting table A on which are fitted in addition to
the usual plain roller, which is not shown, a pair (or two or more pairs) of rollers B, B
carried in bearings in a movable framing fitted on guide wheels D and adapted to
travel over the table A in rear of the plain roller the surface of the glass plate which
is rolled out smooth by the plain roller in the usual way being impressed by passing
through between the pair (or each pair) of said auxiliary rollers B, B. The auxiliary
rollers are fitted one vertically over the other and in rolling the glass to impress it, it
is raised from the table and led between the rollers B, B, by means of an inclined
guide plate I secured between "guns "on the framing and it is thence led over a
similar guide plate I at the rear and back on to the table. One or both of the pair
(or of each pair) of rollers B B is or are engraved or formed with a rippled, dappled
or other surface corresponding to that of the design or pattern to be produced on the
surface of the glass, but by preference the lower roller B alone is so formed in order
that the lower side of the glass plate which is roughened by contact with the casting
table may have the desired pattern or design impressed upon it whilst the upper side
is rolled smooth.
The framing with the auxiliary rollers is traversed upon the table by toothed
wheels E centred in the framing and gearing with the usual racks A' on each side of
the casting table the said toothed wheels being rotated by hand wheels F or by
cranks or like means and imparting rotatory motion in the reverse direction to the
impressing rollers B B on whose axis are toothed wheels E' in gear with the wheels E
gearing into the racks A¹. The upper roll may however be driven by frictional contact
with the glass on which it bears by its own weight alone or by the aid of weights or
of springs G the pressure of the springs being regulated by hand screws H.

page_text: The framing carrying the impressing rollers may be traversed over the table,
independently of the usual casting roller, by means of chains or bands passing round
pulleys at either end or by other means or it may be connected by links or otherwise
to the casting roller in such a manner as to be drawn over the table in rear of the
casting roller.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In conjunction with a casting table for rolling glass a pair or pairs of rollers
carried on a framing adapted to be traversed over said table, the said rollers being
operated so that the glass plate rolled upon the table is drawn through between
them and thereby impressed with a surface pattern.
2. In combination with the casting table A, the framing C carrying pattern
impressing rollers B, B, and adapted to be traversed over the table substantially as
and for the purpose set forth.
3. In conjunction with a casting table for rolling glass, pattern impressing apparatus
composed of the following elements in combination, to wit, the framing C, rollers B, B,
guide plates I, I', and gearing such as E, E', for driving the rollers substantially as
described.
Dated this Eleventh day of September 1888.