US968459A - Transparent sign. - Google Patents

Description

A. T. FISCHER.

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ALBERT il?.y FISCHER, OF CLEVELAND, OHIO.

TRANSPARENT SIGN.

Application filed September 7, 1909. `Serial No. 516,635.

-'To all fathom it may concern:

Be it known that I, ALBERT T. FISCHER, citizen of the United Statesresiding at Cleveland, in the county of Cuyahoga and State .of Ohio, 'have' invented certain new and useful Improvements in Transparent Signs, of which the following is a specification. My invention has reference to transparent signs, and the invention consists'in a sign having the transparent portion thereof printed upon both sides of a sheet of paper or equivalent transparent .or translucent material and surrounded by a dark or opaqu'e contrasting background. The sign or relatively transparent portion proper may consist in letters, numerals, fanciful or practical designs of any kind or character, gures or pictures of various objects and whatever may be preferred to represent in this Way and in varying colors, shades and tints, the range of possibilities in these particulars being practically unlimited and as Wide as tlieprinters art. With it all, however, there is necessarily present a practically dark or non-transparent ield or background to give contrast and full expression t0 the design, and the invention resides in a signhaving the. character or picture or Whatever the object may be displayedby printing alike upon both sides and on a singlesheet of paper or other material which in itself is transparent and has such characters or pictures developed thereon in relatively transparent colors, or blank in the body ofthe sign, but with the body or surrounding portion of the paper covered With Ink or other darkening substance to give the desired relief to the picture.

Reference should be had to the accompanying drawing in Which- Figure l is the front elevation of a portion of a sign embodying my invention; and Fig. 2 is a rear elevation of the showing in Fig. l.

For the purpose of illustrating one embodiment of my invention I have shown in .the drawing a signin which the body l is of relatively transparent material, upon Which` the sign characters indicated at l0, 11 are preferably printed in relatively transparent shades, While the portion of-t-he back-ground 8, 9 immediately surrounding the characters is quite dark for the purpose of giving contrast and expression to the design. "A lighter tint or shade of the same pression.

color or a different color may form an auxiliary back-ground as shown in 2, 4 While the Whole may be framed by a ' marginal portion 5,7, and border strips 3, Q of any desired shadesi, tints or colors. To make a sign of this kind the utmost possible exactness needs to be practiced in order .that all the finer lines of the picture shall be preserved, be-

cause when viewed from either side the pic` ture must have the perfect outlines. of a single-clean imprint, and any lack of exactness in producing the picture or Which Would mar or blur the outlines Would defeat the invention. Hence I prefer'toemploy an exact Working printing press 4for this purpose, say one that has a reciprocating bed adapted to carry a printing form and a revolving or oscillating cylinder t0 run over the same to make' the desired im- The ordinary method of printing is not, however', to be followed in this case. On the contrary, I require the cylinder to perform a 'double function instead of only one as heretofore. Thus, having a form for the sign in proper position on the bed of the machine I first ink the same as usual and .same time.'

The foregoing outline as to a 'practical method of producing a transparent sign according to my invention constitutes present preferred method but does'nct bar the use ofothers, butin anyevent it dees practically exclude. running the through a machine the old Way pri -ting on one side at a time and then en the other. The measure of exaotness required also my Then I introduce the' ico in the delicate outlines of a transparent picture printed on both sides` would seem to render any process of successive or progressive print-ing impracticable.

As above indicated, I begin'vvith a' relatively transparent material, necessarily. In.

y parent material, a eoating substance-applied fof the material. and only `print the bacin' sion of the background ci the sign, the two sign characters' are caused to appear by the A sign characters with the light 4passing Sonie l .may cover this with my forni in such way to work outlines of characters, such as letters or figures and desivns bf dii'erent kinds directly upon the suriace by printing lto one side of said body so as to form aL positive impression. of the baclrground ofthe sign, and a coating substance, applied by printing to the reyerse side or the body so as to forro a negative 4impresccatings being so positioned that the background is formed in every part or a doubie thickness or" said substances, whereby the contrast of the light passingjthrongb. the

through tbe background. e

2. ln a sign, a `body ci relatively transparent material., a coating epplied by print ing to one side oi? the body so as to forno a positive impression of the sign characters and ci." the background therei'or9 and a coating appiied by printing to the reverse side of the body so as to forni a nega tive impression of the sign characters and of the background therefor, the sign characters and the 'background beingprinted in coloring` mate;

rials of different degrees of transparency and the two coatings being so positioned on the body as to cause the characters on the opposite sides to fully register, whereby the sign characters are caused to appear by the contrast of the light passing through them with the light passing through the background.

3. ln a sign, a body of thin, flexible and relatively transparent material7 a coating applied by printing on one side of the body so as to form positive 'impression of the sign characters and of the background therefor, and a coating applied by printing on the reverse side of the bodyso as to form a negative impression oiv the signcha-racters and of the background. therefor, the sign characters and the background being printed in inks of diferentdegrees of transparency and the two coatings being so positioned on the body as to cause the characters on the opposite sides to fully register, whereby the sign characters are caused to appear by the contrast of the light passing through them. with .the light passing through the baclrground.

iin testimony whereof l. ailix my signature in' presence of two' Witnesses.

ALBERT T. FISCHER.

Witnesses:

E. M. Flsrnni, lf. C. MUssUN.

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