US981895A - Type-writing machine. - Google Patents

Description

F. P. STRAUSS. TYPE WRITING. MACHINE. Arrmoumn mum on. 17, 1908.

Patented Jan. 17, 1911.

lazz eni afln UNETE FRANZ PAUL STRAUSS, 0F FRANKFORT-ON-THE-MAIN, GERMANY, ASSIGNOR TO THE CORPORATION OF ON-TIIE-MAIN, GERMANY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

ADLERWERKE VORM. HEINRICH KLEYER A-.-G., OF FRANKFORT- Patented Jan. 2?, 1911.

Application filed October 17, 1908. Serial No. 458,242.

To all whom it may concern:

Be it known that I, FRANZ PAUL STRAUSS, engineer, a subject of the German Emperor, and resident of Frankfort-on-the-Main, in the Kingdom of Prussia, German Empire, with the post-oflice address Kettenhofweg No. 217, have invented new and useful Imrovements in Type-Writing Machines, of which the following is a specification.

Typewriting machines are known in which longitudinally movable type bars are arranged in a horizontal p ane radially to the printing point. In practical use this class of typewriters-has been shown to possess the disadvantages that the characters must be made very small in consequence of the narrow space available for them, so that the em loyment of large characters is rendered di 'cult; Furthermore the number of the characters cannot be increased above 90 Without a further decrease of their width, whereas an increase in the number of characters is desirable and even necessary in the Slavonic languages, because the alphabets of these languages contain more letters than,

say, 'the Latin alphabet. It has therefore been attempted to construct typewriting machines having as large, and acters, as possible in order that they might be used for the various purposes in the different languages, and possessing, besides, as large a printing power possible so as to be able to obtain a large number of copies. These advantages could be attained for typewriting machines provided with type bars of the kind mentioned above, by removing the characters farther from the printing point until the arc in which the type is arranged around the printing point is increased so far that sullicient space for an increase in number and width of the characterswould be available. There are, however, obstacles to this simple expedient, because the shifting of the characters away from the printing point for one unit lengthens and broadens the whole type set, with its type bars to three times this unit. llenee the whole typewriter would assume such an unusual size that its practical and convenient use would be seriously all'eeted.

The object of the present invention is to avoid these ditliculties, and to this end each t e bar is guided horizontally upon a radially slotted plate, which is in only llillf the length of the, stroke of slotted plate.

a; many char- 7 the type bars. Bes des this the well known movement, consisting of a bent double arm type lever and a crank lever, is used. The short guide servesto guide the type bar 1n a horizontal direction duringthe last part of the stroke, lMVhlCll the known tail-piece fixed to the type .bar is guided upon this The tail-piece however can be made much shorter than hitherto usual so that even if one more row of keys used, the machine becomes scarcely longer than before. Furthermorethe arrangement is made such that the driving lever .does not extend through the slotted plate and is guided in this as in known constructions, but the guide block of the type bar eiitends downwardly through the correspondin slot of the slotted plate and thus is ra 'ially guided; The end of the tailpiece of the bar is providedwith a head, an enlargement, or the like, running on the slotted late and thus preventing. the type bar from falling downwardly.

\ 'lheihvention is illustrated in the accompanying drawings, wherein- Figure 1 shows the operating mechanism for the type bars in longitudinal section. Figs. 2 and 3 show the guide of the type bars with the levers operating the latter, 1n cross-section according to the lines A-B and C-D of Fig. 1. Fig. 4 shows the operating mechanism in plan-in its radial arrangement,.together with the slotted guide plate only plate.

When the key 1 (Fig. 1), is d. pressed, the key lever 2 turns upon its pivot 3. As the lever 2- slides with its pivotin the forked end 5 of the internu-diate lever at, this lover when the key is depressed simultaneously swings around the pivot (3, so that the type bar 7 carrying a type block 8 and engaging with the pivot 18 into a forked end of the type bar 7 thrown against the platen 9, while the return into the position of rest is effected by means of a spring 10. This mechanism however is known in the art.

The guiding of the type bars is etl'ected by means ot a guide plate 11 radially slotted from 22 to 23. Ute-upwardly extending l'ront comb 22 eli'ects the lateral guiding wherein it is aided by the guide blocks 24 of the type bars extending downwardly through the slots, whereas the non-slotte bees ..-"rear end 23 serves as horizontal guide. The horizontal guiding of the type bar will take lace until the end 25 (passes, when thrown onward, the non-slotte part 11 of the guide plate. In this movement, the type bar would ordinarily fall with its rear end into the slot 26. In order to prevent this, the end of the type bar is bent in a suitable manner, for instance into an eye 25, so that this portion, being broader than the slot 26 effects the further guiding until the end of the movement. The length of the sldt 26 in the plate ll from 22 to 23 is necessary in order to keep the forked end 24 of the type bar free. In this manner it is possible to keep the ends of the type bars as short as possible so that with an increasein the number of the characters, the machine does not attain too large proportions. The eyes 25 can at the same time serve for the purpose of engaging a locking comb known per se, for the purpose ofllocking the type, bars when replacing all theset by another one.

Now What I claim and desire to secure by Letters Patent is the following:

1. In a typewriting machine, a guide plate provided with radial. slots, horizontally arranged type bars provided with portions arranged .to enter the slots and having at their rear ends laterally extended portions to prevent the ends from falling through the slots and means for operating the type bars.

2. In a typewriting machine, a guide plate provided with radial slots, horizontally arranged type bars provided with portions arranged to enter the slots and having at their rear ends bent portions to prevent the ends of the bars from dropping through the slots and means for operating the type bars.

3. Inatypewriting machine, an elevated .them laterally in position, said bars being further provided with laterally extended rear ends to prevent them from falling through the slots in the plate and means for operating the bars.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two witnesses, this first day of October 1908.

FRANZ PAUL STRAUSS. Witnessest JEAN GRUND, ROBERT BI'J'HL.

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