US751782A - Printing-press form - Google Patents

Description

l0 MODEL.

PATENTED PEB. 9, 1904. I. 0. CLIMER.

PRINTING PRESS FORM.

APPLIOATION FILED APB.. Z4, 1903.

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UNITED STATES Fatented February Q, 1904.

FRANK O. CLIMER, OF CHICAGO, ILLINOIS.

PRINTING-PRESS FORM.

SPECIFICATION forming part of Letters Patent NO. 751,782, dated February 9, 1904.

Application led April 24, 1903.

To all whom t may concern.-

Be it known that I, FRANK O. CLIMER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Printing-Press Forms, of which the following is a specification.

My invention relates to an improvement in the forms from which impressions are taken in the class of printing-presses known as letter-presses; and my objects are primarily to facilitate the production of suoli forms and to greatly cheapen the cost of printing.

To produce my improved form or plate, I employ a film-like sheet of suitably flexible material, preferably paper and transparent, though it may be of other material and is not essentially transparent. On one surface of this sheet I provide with a suitable instrument or otherwise lined or dotted elevations for a background, the lines extending very close together in parallel relation and in one direction or being broken or crossed to afford a mesh. In practice I have used for the lines very fine silk mesh or netting in varying degrees of fineness, according to the character of the work. On the lined surface I provide, as by drawing, (or may trace if the sheet be transparent,) the figure or character to be printed with a fluid, either colorless or colored in any desired tint, which hardens on exposure, but does not shed its substance, as do inks employed for transfer purposes, though the fluid for my purpose may be termed an ink As the ink of the variety referred to that most suitable, though not the only one for use with my invention, is the substance known as water-glass7 which ows readily to enter the interstices on the surface of the sheet and deposit thereon in varying thickness, thus to induce the variation in shade on the background. With the ink hardened there is provided on the lined surface of the sheet the character, gure, or the like to be printed in relief, so that when the sheet, mounted on a suitable back, is adjusted in position on the cylinder or bed of a printingpress it aords the form to be inked in the usual or any suitable manner with printers ink to adapt the configuration in relief on its Serial No. 154,074. (No model.)

surface to be transmitted, with a background, to the surface impressed against it for printing.

Instead of providing lines on the printingsurface I may stipple it, and I intend that stippling or otherwise roughening it shall be included within those of the appended claims wherein the termv lined is employed for lualifying said surface as an equivalent for mes.

Referring to the accompanying drawings, Figure 1 is a broken face view of the sheet employed in the production of my improved article of printing-form having a sheet of meshed fabric cemented on its surface to produce the lines. Fig. 2 is a face view of the completed form having drawn upon its surface a configuration to be reproduced by printing. Fig. 3 is a view showing a print reproduced from the form illustrated in Fig. 2, and Fig. 4 a broken-enlarged section taken at the line 4 on Fig. 2 and viewed in either direction from the line.

In the drawings', A denotes a film of transparent paper, shown of rectangular shape, though its shape and dimensions may be as desired. One surface of the lm has lines produced upon it by means of a mesh B, of silk fabric, cemented to the film-surface. The degree of fmeness of the mesh may vary in accordance with the character ofthe Work.

C is a configuration traced on the lined surface of the lm with water-glass hardened by exposure and standing out in relief. In tracing the configuration C some of the ink afforded by the water-glass is introduced by flowing into and hardening in the interstices of the mesh adjacent to the lines of the configuration, entirely fillingthe interstices if the ink be thick or if it be of a thin quality only adhering to the sides of the lines of the mesh and thickening there Without entirely filling the interstices, thus affording variation in the shading produced on the background.

D is a back, of wood or other suitable material, upon which the lined lm A, bearing the configuration is secured, as by cementing.

To use my improved form for producing prints E, Fig. 3, it is adjusted in the usual or any suitable manner on the cylinder or bed of a printing-press and inked to apply the IOO printersink to the lines of the configuration C and more lightly to the lined or stippled surface of the film, and impressions are then taken from the form in the ordinary manner of printing.

Vhat I claim as new, and desire to secure by Letters Patent, is#

l. As a new article of manufacture, a printing-press form comprising a film of iiexible material having a lined surface and provided thereon with a character or configuration in relief formed of hardened non-shedding ink.

2. As a new article of manufacture, a printing-press form comprising a film of flexible material having a lined surface and provided thereon with a character or configuration in relief formed of water-glass.-

3. As a new article of manufacture, a printing-press form comprising a film of flexible transparent material having' a lined surface and provided thereon with a character or configuration in relief formed of hardened nonshedding ink.

4. As a new article of manufacture, a printing-press form comprising a film of transparent flexible material having a lined surface and provided thereon with a character or configuration in relief formed of water-glass.

5. As a new article of manufacture, a printing-press form comprising a film of flexible material having a sheet of fabric mesh cemented to its surface and provided on said surface with a character or configuration in relief formed of hardened non-shedding ink.

6. As a new article of manufacture, a printing-press form comprising a film of transparent flexible material having a sheet of fabric mesh cemented to its surface and provided on said surface with a character or conguration in relief formed of hardened non-shedding ink.

7. As a new article of manufacture, a printing-press form comprising a film of fieXible material having a sheet of fabric mesh cemented to its surface and provided on said surface with a character or configuration in relief formed of water-glass.

8. As a new article of manufacture, a printing-press form comprising a paper film having a fabric mesh cemented to its surface and provided on said surface with a character or configuration in relief formed of water-glass.

FRANK O. CLIMER.

In presence ofd WALTER N. VINBERG, W. B. DAvIEs.

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