Improvements in and relating to Letters, Characters, or Symbols applicable for Advertising Purposes.
Year: 1897

page_text: Date of Application, 12th Oct., 1897-Accepted, 13th Nov., 1897
Improvements in and relating to Letters, Characters, or Symbols
applicable for Advertising Purposes.
A communication by EDGAR JOIN LUTWYCHE, of 18-30 West Randolph Street,
in the City of Chicago, County of Cook, and State of Illinois, United States
of America, Manufacturer.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6 Lord Street, Liverpool, and 6. Bank Street, Manchester, both
In the County of Lancaster. 118 New Street, Birmingham, in the County of
Warwick and 322 High Holborn in the County of Middlesex, Civil Engineer, do
hereby declare the nature of this invention and in what manner the same is to ho
performed, to be particularly described and ascertained in and by the following
statement:
This invention relates to letters, characters or symbols for producing signs on
windows for advertising purposes, and has for its object the production of a sign at
a very low cost and consists in certain improvements which will be fully disclosed
in the following specification and claims.
In the accompanying drawings which form part of this specification :
Figure 1, represents a front elevation of a letter;
Figure 2, a vertical section on the line 2, 2, Figure 1:
Figure 3. a like view showing a modification in the back of the letter;
Figure 4, a side view of a character or symbol:
Figure 5, a transverse section of the same;
Figure 6, a like view of the same in modified form:
Figure 7, an elevation of another character or symbol:
Figure 8, a transverse section of the same and
Figure 9. a like view of the same in modified form.
Reference being had to the drawings and the letters thereon, A indicates a
letter of the alphabet, B a character or symbol, in this instance a cigar, and C
another character or symbol, a keg, cask, or barrel. These are employed simply
io illustrate the application of this invention, which is designed for advertising
weres and products of various arts and manufactures by using symbols thereof as
sign characters. The letters. characters, figures or symbols are made of amber
or topaz colored or tinted transparent material, such as glass, and on the back or
inside of the letter is applied nitrate of silver solution, forming a coating a, which
is coated or covered with lead. or metallic paint, or with asphaltum.
The back of the letter or character may be in the form of a plane flat surface
as shown at b in Figs. 2, 5 & 8, or it may be concave, as shown at c in Figs. 3,
6 and 9 and the face or front d convex in transverse section.
In practising the invention the following solutions are used.
SOLUTION No. 1.
Pure nitrate of silver in crystals dissolved in distilled water, and after the
SOLUTION No. 1.
Pure nitrate of silver in crystals dissolved in distilled water, and after the
nitrate of silver has been thoroughly dissolved and settled, add very slowly drop
by drop strong aqua ammonia until it clears up to a light coffee color.,
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page_text: SOLUTION No. 2.
Rochelle salts (soda potassa tartrate) dissolved in boiling water, to which add
very slowly drop by drop a sufficient quantity of nitrate of silver which has been
previously dissolved in distilled water, and when cooled filter the solution through
filtering paper.
Any of the well known solutions of nitrate of silver may be used for obtaining
the metallic deposit.
The articles to be treated, which are made of colored glass of the proper shade
such as amber or topaz, either letters, figures, characters or symbols, are first
thoroughly cleansed and placed upon a suitable heated table. Four parts of the
selution No. 1 and one part of the solution No. 2 are then taken and mixed and
the mixed solution immediately poured on the back of the article until it is
entirely covered, it is then allowed to remain from three fourths to one hour
according to the heat used. As the solution evaporates the silver is precipitated
or deposited on the article and the remaining liquid is poured off and the silvered
surface thoroughly rinsed with clean water and the article allowed to dry. The
silver coating is then covered or backed with a lead metallic paint or with
asphaltum.
The paint excludes the air from the silver and prevents oxidation, thereby
preserving the brilliant appearance of the silver. which combined with the colored
glass has the same effect as gold leaf upon plain or colorless glass, or silver leaf.
tin foil or aluminium upon the back of amber or other colored glass and produces
the appearance of a gold letter, figure, character or symbol, capable of being
manufactured at a greatly reduced cost as compared with such articles made by
the use of gold leaf on colored glass.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is:-
First. A latter, figure, character or symbol having a body of amber finted or
colored transparent material and one side thereof covered with a brilliant coating,
producing in effect, a gold letter, figure, character or symbol.
Second. A letter, figure, character or symbol having a body of amber tinted
or colored transparent material and one side thereof coated with nitrate of silver,
producing in effect, a gold letter, figure, character or symbol.
Third. A letter, figure, character or symbol having a body of amber tinted or
colored glass and one side thereof covered with a brilliant material, producing in
effect a gold letter, figure, character or symbol.
Fourth. A letter, figure, character or symbol having a body of amber tinted or
colored glass and one side thereof silver coated, producing in effect, a gold letter,
figure, character or symbol.
Fifth. A letter, figure, character or symbol having a body of amber tinted or
colored glass provided with a concave back covered with a brilliant material, pro-
ducing in effect, a gold letter, figure, character or symbol.
Sixth. A letter, figure, character or symbol having a body of amber tinted or
colored glass concavo-convex in transverse section and the concave side coated
with nitrate of silver, producing in effect, a gold letter, figure, character or
symbol.
'I'
Databor 1807