US1657437A - Printing type - Google Patents

Description

K. :Hmmm-MRA PRINTING TYPE Filed Feb. 18. 1,927

9" VMJ Patented Jan. 24,

TES

PATENT OFFICE.

KIKUJIU SHINOHABA, OF TOKIO, JAPAN, ASSIGNOR OF ONE-HALF TO SHICHIRO KAJIHARA, OF TOKIO, JAPAN.

PRINTING TYPE.

Application tlled February 18, 1927, Serial No. 169,294, and in Japan July 17, 1926.

This invention relates to im rovements in a printing or movable type an aims to provide an inexpensive and4 vet exceedingly durable and effective article of manufacture of this sort.

According to the invention a printing or movabletype is made of glass, instead of lead, as heretofore it. has been.

The type according to the invention is. on account of this fact, less expensive than that made of lead, lighter in Weight, harder in its con'- sistency, and therefore its face does not wear off, being good for service for long years.

It not only removes the fear of lead poisoning but glves a sort the men at Work bec of sense of pleasure to ause of the transparent nature of the material and consequently it fatigues those who handle it to a far less degree than ivth the type made of lead.

make it easier to be type picking handled by a metallic implement.

In the printing types according to the invention, especially those with frosted lateral surfaces, the assembling and set-tine can be Worked out very easily because of the light ness of the weight. given to the group the adjoining types the4 Whole group of If a slight moisture be of types, it will make stick together, so that types will solidify to one concrete block, so to speak, which fact Will greatly facilita the r ostin te the assembling. ln

or grinding operation of the newly mol ed types the cross sectional area. may be regulated, by means of this same operation, to suit t be condition of actual use, which is one of the advantages of the invention. Also by frosting the lateral surfaces, the reflection of light rays therefrom may be avoided, thereby making the character of the type appear in relief in a very prominent fashion owing to the reflection of light at the face thereof. This fact not only makes the search easier but gives also a. sense of pleasure to the men at work.

The glass type according to the invention has also advantages over the'lead type in that the classification of types with reference to the style of characters may be made by imparting simply different colorations t-o the material composing the printing types. The coloration may be carried out, as is Well known,` by adding a suitable metal compound to fused glass before molding.

The drawing annexed hereto shows, by Way of example, a perspective view of a printing type`l accor( ing tothe invention, in which 1 are lateral surfaces and 2 a face or character.f ln this invention lat-eral surfaces 1 should preferably be frosted. As to the method of frosting, it can be done by any suitable method, either mechanically by means of emery powder, for example, or chemically by corrosion with hydrogen fluoride.

l/Vhat lf claim is:

A movable printing type, consisting of a block of glass comprising both a body portion and a type character, at least one of the lateral faces of the body portion being frosted to avoid reflection of light rays there; from and thereby throw the type character into bold relief and at the same time to increase the coehcient of friction of such face.

fn testimony whereof afx m. signature.

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