US935519A - Type for type-writing and other machines. - Google Patents

Description

0. Q KA V LE. "TYPE FOR TYPE WRI IJJING AND OTHER MACHINES. APPLICATION 'FII ED OCT. 1, 1908.

Patented Sept. 28, 1909.

I frwerzkm zZzzesses:

OSCAR C. KAVLE,- OF SYRACUSE, NEW YORK.

TYPE FOR TYPE-WRITING AND OTHER MACHINES.

Specificatiohof Letters Patent.

Patented Sept. 28, 1909.

1 Application filed October 1, 1908. Serial No. 455,669.

To all whom it may concern:

die it known that I, OSCAR C. KavLii, a citizen ot' the United States, residing at Syracuse. in the county of Onondaga and State of New York, have invented a new and useful Improvement in Types for Typeritiiig and other Machines, of which the following a s iecitication.

Tlhis invention relates more particularly to types for various kinds of printing machines, such as typewriters, in which the impre' sions areniade by the type striking and pressing an inked ribbon against the paper or surface to be printed. The type may be used on type-bars or type wheels arranged to print through an inked ribbon, and also in machines employing an inking pad for the type in place of the ink ribbon, but the improvements are of more especial advantage in type used with an inked ribbon.

The objects of the invention are to make the raised characters of the types of a novel t'orin ivhereby the type will make sl'iarper and ('ldni icr impressions, produce more inanitold copies. wear'the ink ribbon less, make better stencil sheets, and require less power for operating them to make the impressions than typo heretofore used.

"lypes tor typewriting and analogous niachiucs are ordinarily made oi hard metal, the character being formed in relief by l'orcing the type blank against a die to cause the metal to liow into the die. As this is done without heat, great pressure is required, and it has been.foiindn'ecessary to make the character with broad base portions in order to displace the metal enough to raise the cha 'acter mum required height and insure-its having a perfectly formed and well defined top or printing face. Heretotore the characters have been forn'ied with planedr straight side faces which slope gradually at the same inclination froni the basevv to the top of the character. These plane sloping sides are objectionable because the eiests of the characters sink more or less into the. paper when making the impressions and the. sloping sides thereof contact with the ribbon and make poor impressions with broad or blurred lines and often sniut the paper.- lhis fault is more pronounced in maniiold work, when the several sheets of paper with the interposed carbon sheets form a relatively soft cushion or pad into which the characters can sink deeper. The pressure of the plane sloping sides on the pa per also absorbs a considerable part of the force of the blow, of the type and thus fewer copies can be madbltlian would otherwis be possible. Fin-theri'hpre, cl-iaract'ers such.- for example, as a, 7, c, y; mand a, which have parts forming inclosed or partially inclosed spaces, when made with the plane sloping sides are prone to"lil l with ink. To overcome these objections the parts ol the characters are formed with only sutlicicnt thickness to insuredhe flow of the metal into the -dies to make perfect crest portions, instead of having tlat or plane sloping sides, being made with concave, sunken or hollow sides. which leaves considerably more space for th 3 ribbon in the valleys between the projecting parts of the characters, so that the type nakc cleaner cut and more sharply delined impressions. I

In the accon paiiyingdrawings: Figure l is a side elevation. full size, of a type-bar provided with a type embodying the inveny 2 is a side tlt'\'2lll( l1,'()ll an en.-

lion.

larged scale, of the type hcad detached.- l i Q enlarged scale, thercot'. Fig. l is-iil cross sec tion on a lar er scale. thercol Fi s. Fraud h i l" Figs. :3 and (3 i Like letters of reference refer to like parts in the several figures. I

A represents the type head, which, in the construction shown, is provided with two printing characters and is slotted and sol- (lei-ed on the type-bar (1, Fig. 1. It may, however, have only one or more than two characters and be formed integrally with or secured to the typo-bar, or other supporting part, inother ways. The cha actors B l) are formed in relief on the type head and project far enough above the sameto prevent the face of the head from contacting with the ribbon. Tn types to be used with cylii idrical paper platens, the tops or faces of the characters are preferably made coiicaved, as

shown at 1*, Figs. 2 and 5, so as to conform to and bear uniformly at all points on the o is a front elevation oi"lace view, ou ai,

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