US1053180A - Type-writer roller. - Google Patents

Description

A. G. HUG.' TYPE WRITER RLLER.

APPLICATION FILED AUG.11. 1911.

Patented Feb. 18, 1913.

A. G. HUG. TYPE WRITER lROLLER.

APPLTGATON FILED AUG. 11, 1011 P'elltd'Feb. f1 8, 1913.

11 ETS- @Minga/' .bg/MQW?" lau ALEXANDER vHUG, 0F CHIICAGLO, ILLINOIS.

Specification of 'Letters Patent.

,Patentedneb. 18, 1913.

Application filed August 11, 1911. Serial No. 643,563.

To' all 'whom it may concern.' v Be it known that I, ALEXANDER G. 4HUG, a citizen of the United States, residin at Chicago, in the county of Cook and tate of I1linois,.have invented a new and useful Improvement in Type-,Writer Rollers, of which the following is a/speciication.` v My invention relates'toan improvement in the class of platens for' typewriting-machines, the construct-ion of which is designed to reduce to the minimum thenoise of the type in striking.

. The object of my im rovement4 is to provide a novel construction of roller in the class 'referred to which shall greatly enhance its quality of noiselessness in the particular referred to.

In theacc'ompanying drawings, Figure l .is a view in elevation, partly broken and sectional, of my improved platen; Fig. 2 is an end view of the `Same; Fig-3 is an enlarged section on line 3, Fig. 1; Fig. 4 is a perspective View of alskeleton-frame for reinforcing the platen-core, with one corehead shown in una-ssembled relation to the remainder of the frame; Fig. 5 isa perspective view of the core, and Figs. 6 and 7 are perspective views of the bearing-heads of the roller, which are secured to the coreheads. f

The core 8, which is preferably of cylindrical shape and which forms the salient feature of my invention, is composed of a wood ofv pith-like consistency possessing, in a very high degree, the qualities of fibrousness, lightness, l softness and non-resilient yieldingness to pressure exerted against the surface of the core. As the preferred wood for my purpose I use that of the yucca palm, as bein extremely fibrous and light, and soft an yielding without elasticity, whereby it is peculiarly adapted for dea-dening noise. The cylinder 8 is formedl by cutting' this wood into proper shape and providing it, or not, with a plurality of longitudinal grooves 9 at uniform intervals in its surface, and with a central bore 10 for a sustaining-rod (not shown). This cylinder is reinforced by a skeleton-frame 11, consistin of disk-shaped metal heads 12 and 13, with metal. rods 14 connecting them, preferably by being riveted atitheir shouldered ends `in holesprovided for them in the head 12, and. riveting their similar opposite ends in holes provided to admit them in the head 13, but after the frame, minus the. last-named head, has been applied to thel rods may b e'passedlengthwise through the `substance of the cylinder, which is easily penetrable by them because of the l'- ht, villen v fibrous and soft quality of the wood,

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the head 13 may be permanently fastened to the protruding rod-ends; Similar bearingheads 15, 15. are secured to the core-heads, as by means of screws 16 (Fi 2). l The core is inclosed in an external cy 17 of rubber vulcanized to any desired degree of hardness; and between this sheath and the core is interposedlabout the latter a suitably thick layer or filling 18 of rub'- ber of the character known in the art as s onge rubber,l which is light in weight, so .and at 4the 'same time resilient, and

very 4durable by reason ofits propertyA of' resisting the 4hardening effect on rubber of oxidation. 4 It is preferred to form the resilient filling 18 integralwith the inner sur;v face of the platen-sheath 17, as indicated, which may be done by cementing and vulcanizin it thereon. v

The impact of the typedof a type-writing machine against the sheath, as usual, is opposed by the resilient action of the lining 18, with the eiect of causing.. the type to rebound and thus attack the roller with a light stroke, much like that of the re. bounding hammer in a piano-action, whereby the type engagement with the ribbon of the machine is rendered vcomparatively light and the life of the ribbon is prolonged, since less of its ink-content is therebyexpended. The soft, yielding and non-resili- Indrical sheath( ent qualities of the core tend to deaden the i noise of the type-stroke and thus-to render the operation ofthe machine noiseless; and the core, by reason of the peculiar character of the wood composing 1t, is solight in weightthat, even with the metal of its frame 11 added, my improved-roller remains adequately light to avoid overweighting the reciprocating carriage of a machine equipped with it.l ,l `f v f The cylinder 8,- of pithlike fibrous wood is an important feature of my improved roller, butl the lining 18 of spongfy rubber, or rubber `that is soft and o light weight relatively to that ofthe sheath 17 and which is preferablyA integral therewith,

is an equally important feature and adapts the sheath, composed of the two varieties of rubber, to vbe used, with the advanta es referred to, with` a core of ordinary. so id wood, which should, by preference, be of a soft and light-weight variety; and I intend to be understood as including such construction within my invention. When this lastdescribed construction is employed, the frame 11 may be vdispensed with, since the core does not require to be reinforced by any frame.

What I claim as Vw and desire to secure by Letters Patent, is

A type-writer roller comprising, in combination, a cylindrical core composed of wood and provided with a central longitudinal bore, a skeleton-frame consisting of rods extending lengthwise through the core and disk-shaped heads at the core-ends connected by the rods, disk-shaped bearingheads secured to the core-heads, a rubber sheath about the core and a illing of sponge-rubber between the sheath and core, for the purpose set forth.

ALEXANDER G. HUG.

In presence of- J. G. ANDERSON, R. A. SCHAEFER.

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