US187729A - Improvement in molds for solid-color printing-blocks - Google Patents

Description

c. H. o. RADDE.

MOLDS FOR SCJLIlD-COLOR PRINTING-BLOCKS.

s I I N.PEIERS. PHOTmUTHOGI'IAPHER. WASHINGYON. D C.

rrnn STATES II* EFICE.

CARL H. O. RADDE, OF HAMBURG, GERMANY.

Specification forming part of Letters Patent No. 187,729, dated February 27, 1877', application filed December 1,9, 1876.

' cut, molded, or shaped to desired forms;

which forms are composed, as hereinafter described, into such relation one to another in a suitable frame or holder as, when so combined, to form on their surface a picture or representation, of which, by the aid of a suitable press and appliances, copies may be readily obtained uponl paper or other suitable fabric or material prepared to receive such impressions.

When various-colored printing composiltions capable of being softened by heat are to be made up of repeats of squares or other forms, I employ a frame, b, With the parts which are to receive the coloring matter composed ot' thefdesired blocks or forms a, having any required shape in cross-section-as, for instance, square, triangular, Steg-and these forms are supported in this frame b, so as to be capable of vertical and correct motion therein by their stems a2 being received and sliding in separate sockets a3, as represented in plan and section, Figs. 1 and 2.

In starting, in the use of this apparatus, the

outer ends al of all the forms a should, 4when lifted, produccone uniform even surface, and all these blocks or forms, being in place, should mutually, by their frictioual contact or by the friction ofl their stems, be adapted to be held up in theirraised or elevated positions; and I commence with one ofthe colors required in a fluid state, and having pushed down such of the forms d as correspond with that color, so as to leave a chamber or series of chambers of the required conguration for that particular color, I then pour in this color, so as to till such chamber vor chambers, as illustrated at a4 a4, Fig. 2. I then proceed in like manner with another color to till another or other chambers, and so on until the whole ofthe chambers have been filled by al1 the `forms having been pushed down and colors filled into the chambers or spaces produced, taking care that every color is allowed to solidify before any other color is poured next to it. The thickness or cake of combined colors is then suitable for use in color-printing.

The combination of a frame, b, with a system of vertically-movable blocks or forms, a, supported severally upon appropriate guides or stems, and each adapted, when pushed down in the frame, to leave a chamber for the reception of the coloring' matters, as de-v

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