US863952A - Type-writing machine. - Google Patents

Description

ATENTED AUG. 20, i907. STILLMAN, DEGD.

Erl'. D. STIL-LNAH. ADMHISTBTEIX. 13H5 WRITING Mamma APPLIUTON FILBI! MAY 3. 1905.

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e4 E70/27121K No. 863,952. PATETED AUG. 20, 1907. G. STILLIAN, DECD. M D STILLMAN ADMINISTBATRIX TYPE WRITING MACHINE. APLIOATION FILED MAY a, 1904.

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W/NSSES, fil/TOIT, /Jf a. mm, WL '2% @Hmm/EX L i i whilhshows the manual as depressed with the typey of the upper case at the printing point -a-. In order that this latter movement may be yaccomplished I provide a rocking member 1 4- with an extension 2-28- which normally abuts against the front face of the bracket -17- when the type-bar is restingonl the V The link -16- is pivotally connected at 2Q- to the type-bar le near but between the ulcrum l1-v and type, and` it is' now apparent that by depressing the manual .-9- the link -5- and fulcrum -4- are drawn forwardly while the rocking member' 14- is` held from similarmovement by the extension 2S- abutting against the front face of the bracket 18-. This also holds the link l6- from forward movement and the pivot 2Q-- thereforel becomes the fulcrum upon which the type-bar swings to the printing position, but it is free to rock vertically to accommodate itself tothe shifting position of the. iulcrurn -i-oi the type-bar as the link -5- is drawn forwardly to the position seen in Fig. 2. This forward rocking movement of the link *,5- through the medium of the manual -9- and its'connections with said link causes the type-bar to be drawn downwardly, and at the same time its type end is rocked upwardlyon the fulcrum -29- so that the upper case type print at the point -ar and as soon as the pressure upon the manual is released the type-bar returns by gravity to its normal position of rest onthe seat -1laided bythe spring 12- andv an additional spring -30 which bears on the lower edge of the lever -31- of the manual 9?- thus returning the link -5-- to its normal upright position, as seen in Fig. 1 when operated by the manual -8- the type-bar -becomes a'lever of the third kind fulcrumed at 4- and the operating power applied at -294-3 but when operated by the manual -9' it be# comes a lever of the rst kind fulcrumed vat -29- and the power applied at #-4.- so `that the points where the power is applied alternately become the fulcrums of the type-bar.

In printing with the lowe case type -2- when the manual -8- is depressed -link -I4-- is drawn to the position indicated by dotted lines in' Fig. 1, thus elevating the typebar on the iul' `-Crum -4- and bringing the type 42* to the printing Y,

- point, the link -5- being held from rearward movement by thev engagement of the extension 13e-'with the rear face of the hanger -7-. This extension 13- is provided with two curved faces 32 and S3- the face-32 being concentric with the pivot @-6- and the face -33- is concentric with the pivot -l7-. The extension -28- is also provided with two curved` bearing faces -34- and -.35, the face -34- being concentric with the pivot -17 while the face 35- is concentric with thepivot 6- and is substantially coincident or struck from nearly the same radius as the curved 'face 432-- While the curved surfaces 33- and S4- are also struck with substantially the same radius from -the center of the pivot 417- so that the e rocking member .and-y curved surfaces which are drawn frornvthe same center `may just clear each other in their movement upon their respective pivots -6- and l7-. lhe object of these curvedsurfaces is to prevent the 4accidental* movement of one oi the parts -5- or lliwhen the other is being operated, as or instance-'when the manual 8- is depressed the rocking member 14- is .drawn rearwardly to throw the type-bar to the lprint-l ing point and' the curved surface -3A-l is brought into registration with the curved surface -33- of the extension 13-, thus .preventing any accidental iorward movement of the link -5- while the manual 8 is in action. In like manner when the manual -9- is depressed the curved surface -32- registers with the curved surface -35- and prevents'the vibration of the rocking member 14- while the type-bar is being moved to and 'from the printing point. This latter arrangement, however, is not necessary to the operation of my invention and it is only intended as precautionary means to prevent accidental displacement oi one of the parts -5- or 14- while the type-bar is being actuated by the manuals -8- or Q. Y

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The type-bar -l--is provided with spring iriction plates ;40, Fig. 3, which are dished outwardly at.

lthe center and have their marginal edges in irictional engagement with the opposite sides ofthe link 5 so as tovforrn broadV concentric bearings around thev pivot -4-, which in'this instance-consists oi-an eye- -'let passed through suitable apertures in theA type-bar -1- and plates 4G- and constitutes one pivot upon which the type-bar moves. The hanger -7- is provided with similar spring friction plates -41- which are constructed and arranged in the same` manner as those seen in Fig. 3 .for holding the link 5 from lateral movement or loss motion.

I havethus far described a single type-bar and its actuating mechanisms, but itis apparent that any number of these type-bars may be' arranged side by sidein a circular arc having its center at or near the printing point -aand that each type-bar 'is provided with two separate actuating,v mechanisms similar to those hereinbefore described. I usually provide a separate 'hanger for each type-bar and its supporting link -5'- and these hangers are mounted upon a suitable support -42- which is built 'in the machine frame, not

- shown and to which the brackets d8-T are also secured.

The brackets -26- for supporting the rocking members .-22- are mounted upon a separate'support *43- whichis located in iront of the support 42-- and is also secured to the machine irame in any desired manner not necessary to herein illustrateor describe, as -these supports form 'no partA 0i my present invention.

Having thus described m'y invention what I claim and desire to secure byI Letters Patentie- 1,. In a typewriting machine, 'a type bar having two type, separate fulcrums' for the type bar, and 'separate devices operable separately to rock the type bar on one of its fulcrums to bring each type to the same 'printing point.

2. In a frontstriketypewritizi`g machine, a type-bar havving two type Vand two fulcrums for the type-bar each movable about theother. I

H3. In a.frontstrike-typewriting-machine, a type-bar having two-type and two pivots a xed distance apart land two type. and separate operating devices each connected tn the type-bar at a different point to throw it to the printing position, the connecting p oint of one of said devlcesformlng a fulcrum for the type-bar when actuated by the other of said devices.

5. Inoa' type-writing machine, a typebar having two type and separate operating devices each connected to the typebar at a dlierent point to throw it to the printing position, the point of connection of each of said devices with the type-bar forming a fulcrum upon which the typebar swings lwhen actuated by the other of said devices.

1() 6. In a typewriting machine, a two-typetypebar having two fulcrums each movable about the other, `and separate manuals each connected to rock the type-bar on one of its fulcrums to its printingeposition.

7. In a typcwritlngmachine, 'a two-type type-bar havim;r two fulcrums a fixed distance apart and each movable about the other, and separate operating devices each ladapted to rock the type bar on one of"its fulcrums.

8. In a front-strike-typewriting-machine, a xed hanger,`

a link pivoted to said hanger to swing forwardly and downwardly, a two-type type-bar pivoted to the link a ked distance' from the pivot. of said link, a manual and connections between' said manual and link for rocking said link on its. pivot, and a second manual and connections between it :1nd the type-bar for rocking said type-bar upon its pivot to its printing position.

' 9. In a typewriting machine, the combination with a type-bar having two type and two fulcrums each movable about the other to bring either of the type to the printing point, a manual connected to move the type-bar upon o ne fulcrum to print with one type, and a second manual connected to move the type-bar on the other fulcrum to lint with the other type.

10. In a typewriting machine, a two-type type-bar having two. fulcrums each movable about the other and separate operating mechanisms, each adapted torock the v to throw it to the printing position, and a secondmanual connected and operating to convert the type-bar. into a lever of the first kind and at the same time to throw it to a dltereut printing position.

12. In a front-strike typewritingmachine, the combination with the hanger of a' link pivoted to the hangen' 4t) means for limiting the rocking movement of. the link in one direction, a manual and connections for rocking the` link in the opposite direction, a two-type-typc-bar pivoted to the link, and a second pivot for the type-bar upon which the type-bar swings to the printing position when 59'v said manual is operated to rock the link. f

13, In a front-strike typewriting machine, a hanger, a 4 link pivoted to the hanger, a type-bar pivoted. to the link, means to rock the link in one direction, and additional means engaging the typc-barab'ove itsl pivotal connection.55 with the link to throw the type-bar to the printing position as the link is rocked upon its pivot/x 14. In a front-strike-typewring-machine, a hanger, a link pivoted to the hangerrmeans to rock the link upon its pivot, atypebar pivoted to the link, means for return- 6() ing the link to its starting position, and additional means l connected to the type-bar above its pivotal connection with -the link for rocking the* type-bar upon its pivot to its GEO. F. STI LLMAN.

Witnesses:

H. E. CHASE, HOWARD l. DnNlsoN.

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