US501297A

US501297A - Casper l

Info

Publication number: US501297A
Authority: US
Publication date: 1893-07-11
Anticipated expiration: 1910-07-11

Description

. (Ho Modl.) I v C. L. RE-DPIELD. TYPE DIE FOR MATRIX MAKING.

No. 501,297. Patented July-11:, 1893 ter, exceptthat it is not made to extend berrnn STATES.

; PATENT OFFICE.

CASPER 'L. REDFIELD, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE CHICAGO MATRIX "MACHINE COMPANY. v

TYPE-DIE FOR MATRIX-MAKING.

SPECIFICATION forming part of Letters Patent No. 501,297, dated July 11, 1893.

Application filed January 13, 1890. Serial No. 336.849. (No model.)

To all whom it mag concern:

Be it known that I, CASPER L. REDFIELD, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Type-Dies for Matrix-Making, of which the following is a specification.

invention relates to dies used for making character impressions in a matrix body from which stereotype plates may be cast for use in printing, and more particularly to such dies as are used in matrix-machines that form the character impressions by the successive operation of single dies.

The object of the inventionis improvement upon the form of dies disclosed in myPatent No. 416,740, of December 10,1889,wherebyimpressions may be produced that will enable more perfect stereotype plates to be cast therefrom and insure the production of clearer print.

In the accompanying drawings illustrativeof my improvements Figure 1, is a face view of a die having the letter h cut on its face; Fig. 2 a side view of the same, viewed in the direction of the arrow 2. Fig. 3, shows a matriximpression made from this die. Fig. 4, is a sectional View of the matrix on the line -90 of Fig. 3, and Fig. 5, a vertical sectional view of the die suspended above the impression. Fig. 6 shows a matrix impression of the character a. Fig. 7 is a sectional view similar to Fig. 4. Fig. 8 shows in vertical section the die for the character a in position to print or to impress its character next to the impression h already formed. Fig. 9 shows a matrix impression of the letter s, Fig. 10, a sectional View of a matrix body showing the impressions of the letters h and a, and Fig. 11, a sectional view of the lower portion of the die for the letter s in position to impress its character inproper position following the letters ha.

In constructing the letters I form a shoulder 1 around each character that conforms substantially with the outline of the charac-.

yond the extreme rear edge of the character nor above the top of the tall characters. This shoulder is wider on the forward edge of each 50 character and the lower edges of characters that extend below the general line of printing, that is such characters as g and y, than about other portions. Intermediate the shoulderl and the face of the character a second shoulder 2 is formed which is smaller in superficial area and extends around a more limited portion of the character. The exact extent and contour of the shoulder 2 varies with each letter, .but in general it is placed so as to better protect the hair lines and those parts of the letters which are liable to be injured by succeeding impressions. Around the forward edges of the characters and occasionally around the hair lines the connecting material between the character faces and the inner shoulder 2, is formed into a bevel 3. The object of this bevel is tomore thoroughly protect an impression from injury by a succeeding impression, by having the matrix-material pressed away laterally in the formation of the preceding impression; and, to enable better castings to be made of the fine hair lines of the n1atrix-impressions,by havingsuch portionsofthematrix impressions wider in the rear of than at the face of the impressions. The sides of the other portions 'of the characters may be made parallel or nearly so. If beveled at all their bevel may be uniform and much less than the bevel 3 8o heretofore mentioned. The interiors of characters are preferably cutout in concave form as shown at 4, though this is not essential to other parts of the invention. It is also preferable to have all corners except those on the character faces rounded as shown at 5 rather than sharp corners.

Having described my invention, what I claim is 1; 'A type-die having its face partially suro rounded by a shoulder and a smaller shoulder intermediate the first shoulder and the face, which surrounds a smaller portion of the character, substantially as set forth.

. 2. A typedie havingits face partially sur- 5 rounded by a shoulder, said shoulder consisting of two or more steps except on that portion which comes next to a preceding character, substantially as set forth.

3. A type die havinga small shoulder close to the face of the portions of the character needing most protection and a larger shoulder embracing the former and farther removed from the face and extending around those portions of the face requiring least protection, substantially as set forth.

4. A type die having a small shoulder close to the face of the character and around that portion which it is more desirable to protect, a bevel extending from the face to this shoulder around those portions which it is most desirable to protect, and a larger shoulder embracing the smaller shoulder and farther removed from the face. i

5. A type die having a bevel extending from the forward and lower edges of the face to a shoulder near the face, said shoulder passing by straight or slightly beveled sides to a second shoulder and said second shoulder passing by straight or slightly beveled sides to the body of the type, substantially as set forth.

6. A type die having the portions intermediate the stems of the character-face recessed in concave form, substantially as set forth.

'7. A type die having the contour of its face divided into four portions, one portion being left unprotected, a second portion being protected by one shoulder, a third portion being protected by two shoulders and a fourth portion being protected by two shoulders and a bevel, substantially as and for the purpose set forth.

8. A type die provided with shoulders for the protection of the face impressions and having the corners of the shoulders rounded, 0

substantially as set forth.

CASPER L. REDFIELD.

Witnesses:

FRANK W. IIOYT, EDWARD B. SPRINGER.