Improved Method or Means of Producing Sparkling Brilliant Effect in or from Glass alone or from a Combination of Glass and Metal or Metalized Material.
Year: 1887

page_text: Date of Application, 16th July, 1887.
Complete Specification Left, 11th Apr., 1888
Complete Specification Accepted, 15th Sept., 1888
Improved Method or Means of Producing Sparkling Brilliant Effect
in or from Glass alone or from a Combination of Glass and Metal
or Metalized Material.
We EDWARD SMITH and FREDERICK SMITH both of 34 Grays Inn Road, Middlesex,
Designers in Glass and Glassware, do hereby declare the nature of our said invention
to be as follows :-
-
The object of this invention is, to produce an ornamental glass article from which
brilliancy and sparkling effect can be obtained when used as a transparent body, or by
the application of metal or metalized material to the back thereof when used as an
opaque body.
The glass may (partly or wholly) be in colour or the metal or metalized body miay
be of the same or of different colours for the intended purpose.
According to our invention, we make a sheet or piece of glass by casting or pressing
with a mottled, roughened, chequered or other uneven back surface and with a
partitioned or sectioned front surface, said partitioned or sectioned portions being raised
with regular or irregular angled slopes, but each slope rounded or of curved form, there
being no flat surface on any part of the raised portion.
The roughened or chequered back gives a brilliant sparkling effect which is
inagnified by passing through the rounded or curved partitioned front surfaces.
Dated this 16th day of July 1887.
H. GARDNER,
166, Fleet Street, London,
Agent for the said E. & F. Smith.

page_text: Improved Method or Means of Producing Sparkling Brilliant Effect
in or from Glass alone or from a Combination of Glass and Metal
or Metalized Material.
We, EDWARD SMITH, and FREDERICK SMITH, both of 34 Grays Inn Road, Middlesex,
Designers in Glass and Glassware, 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
-
In the Specifications of former Patents granted to us and being respectively
No. 9361 dated 24th June 1884 and No. 1056 dated 23rd January 1886 are described
and claimed certain improved productions of ornamental devices and effects for
decorative and other purposes. And our present invention has reference to the
production for like or similar purposes of an improved ornamental glass article, from
which a sparkling brilliant effect can be obtained either when it is used as a transparent
or translucent body that is to say when it is viewed by light transmitted through it
from the opposite side to that looked at or when it is used as an opaque body that is' to
say when it is viewed by light it receives at the side looked at and is or is not provided
with a suitable backing which may be for example metal or metalized material (by
which we mean material coated or covered with metal or having metal applied
thereto).
The glass may be partly or wholly coloured either by staining it in the course of
manufacture or by the application to the back of it after manufacture of colouring
material such as dye or paint. When metal or a metalized body is to be used at the
back of the glass it may either be of the same colour as the glass or of a different color
or colors according to the effect to be produced.
In carrying out our invention we produce by casting or pressing a sheet or piece of
glass with a roughened chequered or other similar uneven back surface and with a
partitioned or sectioned front surface formed with raised parts or projections having
regular or irregular angled slopes of rounded or curved form, there being no flat
surface on any such raised part or projection.
The roughened chequered or uneven back surface of the glass gives brilliant
sparkling effect which is magnified or enhanced by passing through the rounded or
curved surfaces of the raised parts or projections at the front of the glass.
In order that the nature of this invention may be readily understood reference is had
to the accompanying illustrative drawings in which-
Fig is a front view.
Fig. 2a back view and
Fig. 3 a cross section on the line A B of fig. 1 illustrating a suitable formation of a
piece of glass with front and back surfaces according to and for the purposes of this
invention. The thickness of glass (excluding the front and back projections thereof)
it will be desirable to use in order to obtain the best results will depend upon the
magnifying power and size of the said projections.

page_text: Thus if the glass be made thicker than shown the curvature of the front projections
should be made less or flatter, whilst if it be made thinner the curvature should be
increased. The size of the projections at the back surface may be maintained constant
for different thicknesses of glass but they are preferably made much smaller and
consequently more numerous than those at the front surface to give the best
effect.
The several figures shewn in the drawings are drawn full size and illustrate the
relative proportions of the front and back projections to the thickness of the glass,
that have been found in practice to give a brilliant sparkling effect whether viewed
by light passing through from the back or by light received by the glass at its
front.
The back surface of the glass is formed of or with numerous small cones or conoidal
projections springing from the main body 2 and constituting a roughened or chequered
or uneven surface the arrangement of which may be such as to represent geometrical
patterns or not as desired.
The front of the glass is formed with less numerous and larger projections 3 having
curved surfaces and so formed and arranged as to magnify.
The glass may be uncolored; or when it is desired that it shall be colored this may
be done either in the course of manufacture in a manner well understood or it may
have a single or multiple colored effect imparted to it either in whole or in part after
manufacture by applying a coat of transparent or translucent dye or stain to its
back.
In Figs. 4, 5 and 6 which are similar views to Figs. 1, 2 and 3 the projections 1 at
the back of the glass are of pyramidal form the faces of each pyramid being flat or
approximately so. Glass so formed produces a brilliant sparking effect if used as a
transparent body and viewed by light passing through it. To produce such an effect
when the light and the observer are both in front the back of the glass may be silvered
in the ordinary way, or it may have metal or a metallized body applied either directly
thereto or arranged at a short distance therefrom according to the effect desired.
Glass with front and back surfaces formed in substantial accordance with this
invention as above set forth may be made in different forms, and with various designs,
whether for use with or without a backing, for advertising or for decorative
purposes.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is: :-
The use with or without a backing substantially in the manner and for the purposes
set forth of glass formed with a series of curved projections at one side and with
numerous projections or a roughened or chequered surface at the other side.
2. Glass formed substantially as shown in and described with reference to Figs. 1
to 3 inclusive or as shown in and described with reference to Figs. 4 to 6 inclusive of
the drawings annexed for the purposes set forth.
Dated this 11th day of April 1888.
Dated this 11th day of April 1888.
EDWARD SMITH.
FREDERICK SMITH.
W. Lloyd Wise,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicants.