An Improved Process for Making Transparent Show Tablets, Advertising Signs, and the like.
Year: 1892

page_text: Date of Application, 29th June, 1892
Complete Specification Left, 29th Apr., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
An Improved Process for Making Transparent Show Tablets,
Advertising Signs, and the like.
I, JOSEPH BENJAMIN ADAMS of 143 Grays Inn Road, London, Engineer, do
hereby declare the nature of this invention to be as follows:-
Transparent signs and tablets are extensively used, and at present are produced
by the comparatively costly method of embossing glass or by the sand-blast
process.
My invention consists in first preparing by hand or printing the announcement or
advertisement on a sheet of paper or other suitable transparent substance, and then
placing it between two slabs of glass which are cemented together or caused to
adhere around their edges by any suitable adhesive medium.
For the inscription or device any of the usual coloured printing inks are employed
preference being given to those not acted on by light. Air and dust being entirely
excluded an inexpensive and permanent tablet is obtained.
If preferred the edges can be bound with cloth, leather, or metal, or a frame of
wood or moulded pulp, or other suitable substance can be employed. There will of
course be nothing on the surface of the glass to prevent the inscription being
distinctly visible from either side.
Dated this 29th day of June 1892.
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Process for Making Transparent Show Tablets,
Advertising Signs, and the like.
1, JOSEPH BENJAMIN ADAMS of 143 Grays Inn Road, London, Engineer, 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 transparent show tablets, sign plates or other like
devices for the purpose of displaying inscriptions signs or other matter for adver-
tising and other purposes.
My present invention is as follows:-
A sheet of paper or other suitable thin transparent material has the desired
advertisement inscription sign or other matter suitably delineated thereon or
imparted thereto either in ink or paint or both (either in colours or otherwise) or
imparted thereto in any other desired and suitable manner.
The sheet of paper (or the like) thus prepared is now placed between two sheets
or slabs of glass (or the like suitable transparent material).
These sheets of glass may advantageously be perfectly flat or same may be of
other suitable form such as concave or convex or other curvilinear form or corrugated
ribbed or otherwise shaped-the two sheets or surfaces of glass being made to
exactly correspond so that they lie parallel to each other throughout when laid
together with the said sheet of paper etc. in between same according to my
invention.
And in order that my invention may be the more easily understood and readily
carried into practice I will proceed to further describe same with reference to the
drawings hereunto annexed,

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a front view of a flat sign plate or show tablet constructed according to
my present invention.
Fig. 2 is a horizontal sectional edge view thereof.
A is the one sheet of glass forming the back.
B is the second sheet of glass-of slightly smaller size around its edge-forming
the front.
C is the sheet of paper or the like material having thereon the words
"J. B. Adams' Patent"
-as displayed in Fig. 1.
By making the front plate B rather less in size than A-putty or other suitable
material may be placed in the recess thus formed all round the edge and then
trimmed off on a bevel (as shown) or otherwise so as to set and harden and thus
form additional means for preventing air and water from entering between the two
sheets of glass.
If desired these tablets may be bound around their edges by leather cloth metal
or other suitable binding or same may be mounted in frames or other suitable
supports or means may be provided to hold and display or exhibit same in any
manner desired.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is :-
A transparent show tablet sign plate advertising device or the like constructed
of two plates of glass cemented together or otherwise suitably secured to one
another and either with or without a binding or frame around the edges thereof
and having a sheet or surface of paper or other suitable thin transparent material
laid in between these two glass surfaces and such intermediate sheet or surface
bearing upon it the advertisement inscription device or other sign or signs
desired to be displayed-arranged and combined substantially in the manner and
for the purposes hereinbefore described and illustrated by way of example in the
drawings hereunto annexed.
Dated this 29th day of April 1893.
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.