US389113A - Method of producing dies for making wood type - Google Patents

Description

(No Model.)

G. (1. SETOHELL.

METHOD OF PRODUCING DIES FOR MAKING WOOD TYPE.

No. 389,113. Patented Sept. 4, 1888.

lflhtmeomeoo 34400144608,

@4 r 07 6 d m,

' flame/Ma de /ewe. W

UNITED STATES PATENT OFFICE.

GEORGE O. SETOHELL, OF NORVIOH, CONNECTICUT.

METHOD OF PRODUCING DIES FOR MAKING WOOD TYPE.

SPECIFICATION forming part of Letters Patent No. 389,113, dated September 4, 1888.

Application filed April 2, 1888. Serial No. 269,314.

5 State of Connecticut, have invented a certain new and useful Improvement in Methods of Producing Dies for Making Vood Type, which improvement is fully set forth and described in the following specification, reference being had to the accompanying sheet of drawings.

This invention is in the class of dies used for impressing or indenting end wood, as in woodtype making, and has for its object the improvement or development of the methods by which such dies are produced.

My said improvement has special reference to dies of the kind described in a patent to XVilliam H. Page, issued December 20, 1887, and numbered 37 ,993. Under the said Page system dies are produced by utilizing the enlarged pattern-letters commonly used in the production of wood type by cutting-machines. To the backs of such patterns are secured ribs conforming in relative position to the outline of the letter on the front. The pattern thus produced is then placed in a pantographmachine and used to control the movement of the cutting-tool while a fac-simile letter (or die) is cut in metal. This provides a (lie which when pressed into ablock of wood leaves projecting portions the reverse of the desired print; in fact, forms a printing'type substantially like those commonly produced by cutting-machines. As compared with the said Page system, my present invention has in its favor the ability to use pattern-letters without specially preparing the reverse ribs above referred to; and, further, I am able to produce dies with beveled or inclined edges, some- 0 times desirable,but not easily attained by the Page method.

I have illustrated the several stages necessary in producing dies by my new method in the annexed sheet of drawings, which, with 5 the following description, fully explain said method, so that one familiar with the arts of wood type and die making may readily produce the same.

Figure l of said drawings represents the enlarged pattern necessary to produce a die for the letter B. Fig. 2 is a perspective View of a solid die made in a. pantograph-machine (No model.)

by using the said pattern to control the movement of the cutting-tool. Fig. 3 is an edge View of said die having brazed to its face a block of brass or similar metal. Fig. 4 shows the same after having been separated on line 00 w of Fig. 3. Fig. 5 is a face view of the die as it then appears ready for use. In Fig.6 I have shown a block of type-wood impressed by said finished die, and in Fig. 7 a print from a type so made.

The pattern-letter a (shown in Fig. 1) is usually cut in hard wood somewhat larger than the desired die, so that any imperfections in said pattern will be lost sight of in the reduced die. After having produced in a pantograph-machine a solid die of the form indicated by the reference-letter c in Fig. 2, I secure to the face of said solid die (preferably by brazing) a metal plate or block, d, of sufficient thickness and size to support the operative portions of the die-that is, those projecting portions which are to be forced into the wood in the act of typemaking. I then remove the original backing by sawing through on line 00 m of Fig. 3, thus reversing the outline of the operative portions or face of the die,as shown in Fig. 5. The die thus formed may be used to produce a great number of type by simply indenting or impressing blocks of prepared type-wood.

It is sometimes desirable to produce a die with undercut edges. To accomplish this by my new method a cutter whose end portion is tapered,or shaped approximately as a frustum ofa cone, may be used in the production of the solid die 0. \Vhen the die is reversed by the brazing and sawing operation above described the finished die is left with the desired under-cut.

Having described my invention, I claim The improvement in methods of producing impression dies, which consists of forming a reverse die from an enlarged pattern in a pantograph-machine, in brazing to the face of said die a block of metal, and finally in removing the original backing, in the manner and for the purpose specified.

GEORGE G. SETCHELL.

Witnesses:

FRANK H. ALLEN, ALLEN TENNY.

Images