US886557A - Type-writing machine. - Google Patents

Description

1N0. 386,56'7. PATENTED MAY 5, 1908.

' J. VGLKER.

TYPE WRITING MACHINE. APPL'IOATION mum FEB-15, 1906.

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J. VGLKER. TYPE WRITING MACHINE. APPLICATION FILED FEB-15, 1906.

PATENTEDVMAYI 5, 1908.

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JEAN voLKER, or NEU-ISENBURG,GER1\1ANY, ASSIGNOR TQ THE FIRM or PETER WEIL & co, or RODELHEIM, NEAR FRANKFORT-ON-THE-MAIN, GERMANY.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Eat/enter! May 5, 1908.

Application mes Feoruaxy s, nice. Serial No. 1,192.

To all whom it may concern:

Be it known that LJEAN VoLKER, manufacturer, a sub'ect of the German Emperor, and resident oi Newlsenburg, near Franklort-on-the-Main, Germany, have invented certain new and useful Improvements in or ltelalim to lype,-Vv*ri-ting Machines, of which the Following is-a specification. This invention has reference to. type; writing machines, and .more particularly to lettenspacing mechanism therefor, in connection with tabulating work, which will enable the use of the ordinary spacing key to be dispensed with.

With ordinary typewriting machines when making a double space, it is necessary to depress the space-bar after each letter, thus causing inconvenience and mistakes. According to this invention, and in order to avoid these objections, a special mechanism is provided which may be used instead of the ordinary ratchet mechanism and which, at the depression of 'a letter-key causes the ratchet teeth to advance and to produce an equivalent forward movement of the. carriage. The means for throwing-the saidmechanism into and out of gear may consist of a lever disposed in any convenient position on the machine.

. means for effecting the forwardmotion of the carria e either by the ordinary or by my auxiliary flatten-spacing gear. *ig. 4 isa perspective view of the device of my invention.

4o" For the purpose of explaining the operation of my auxiliary device, it will be useful to refer to the ordinary mechanism by which the carriage is caused to move forward step b step for one. division after each depression 0 a key. This is effected by so mounting the horizontal plate e as to be oscillated about the horizontal axis p p by suitable mechanism operated in connection with the keys. In a plane parallel to the axis of oscillation p p is arranged a slide informed with a curved slot 0 concentric with'the plate e, the concentric movement of the said slide .being insured by a screw stud d engaging the slot 0 and another screw stud i in engagement with a linger piece I) of the slide 1').-

- moves'the slide 1) against the A tension spring Z whose ends are attached to a lug g of the slide and to a lug h on the plate e, pulls the slide constantly towards v its idle osition, thus bringin the outer end of the s 0t 0 against the stud d and the stud'i in contact with a tooth w formed on the \inner side of the slide. To the. lower'sid'c of the' late e is fixed a tooth v and during the osci ation of the plate, the teeth to and o are alternatel brou ht in en agement with the teeth of t e ratchet wheela arranged in the center of the platee.

The forward movement of the carriage is transmitted in theiordinary manner through the intervention of a rack and toothed pinion to the vertical s indle f of the ratchet wheel a whereby the litter is constantly urged in the direction of the arrow. However, the rotation of the wheel a is revented by the tooth "0 which at the norma or horizontal position of the plate engages in one of theteeth of the ratchet wheel. B'y de ressing a key the portion of. the plate 6 having the tootho is turned downward and the tooth of the slide b enters the next tooth of'theratchet 'u and w being such-as to correspond with the teeth ofthe said wheel. When the tooth 'v is lowered so as to be'free oi the wheel a the lat ter turns in the direction of the arrow and, through the intervention of the tooth 'w, pull of the spring 1. The amount of such displacemerit is limit'e :by' the slot cwhich latter=correspondsto one division of the ratchet wheel so that the tooth w cornes'to a dead stop above the tooth v and kee s the ratchet wheel immovable. When releasin the key the plate e swivels back to its norma position and its fixed tooth 'v enters from below into the gap of theltoo'th in which the tooth w is engaged and the latter moves upwardaa the 'a forward motion for one division at'eachuepression of either a letter-b ar or the space-biuz Thus far, the mechanism referred to, is

known, but, in order to provide or a double v twice as long as the slot of the slide 1).

Obviously it will be impossible to operate both escapements simultaneously and means must be provided, for alternately en aging and disengaging the one or the ct er 0 these escapements, as may be desired. This is ef fected by means of a strap m fitted at its middle with a downwardly projecting in 0, and connected with the plate e. i The p ate e is supported by its pivot pins p p int e free ends of arms 1" whose other ends are pivoted to the main frame of the machine.

The horizontal displacement of the plate e is obtained through the intervention ofa slide bar 0;, to the end 9 of which is connected an operating lever or the like situated at the front of the machine. The slide bar is guided in a horizontal lane along the bars 8 s of the mainframe of t e machine by means of studs t t which engage in sloth 'Lt/lt of the said slide bar. The latter is further formed with a curved slot y in which the pin 0 of the strap lmengages. The curvature of the slot y-issuch that the endwisemotion of the sliding bar x will produce lateral displacements of the plate e in a direction at right angles to the movement of the bar rand thus cause either the teeth o and w to be brought in engagement with the ratchet a as shown in. Fig. 3 for ordinary 'writing, .or the teeth is and n with the same as shown in Fig. 2 for lettrspacing. The ends of the slot 3 are continued slightly in the direction of the bar as so as to form a lock for .the plate e and prevent its unintentional displacerrrefi $he locking action being due to the fact that'the bar at has to move a certain distance before the inclined portion of the slot affects the plate e. Having now fully described my said invention, what I claim and desire to secure by Letters Patent is:

1. In -a typewri ting machine the combin ation with the ratchet wheel of the carriage motion controlling device, the oscillating frame surrounding said wheel and the ordinary escapement oftlreilatter, of an auxiliary escapement allowing of the ratchet wheel advancing two teeth, and means for shifting said oscillatin frame for throwing the ordinary and auxiliary escapement alternately in or out of gear, substantially as and for the i purpose described seats? r 2. Iii a typewriti'ng machine the combine: ,tion with the ratchet wheel of thecarriage controlling device, the oscillatin frame and the ordinary escapement' of the atter, of an auxiliary escapement arranged inversely on 7; the oscillating frame, opposite the ordinary esca ement and adapted to allow of the rate et wheel'advancing two teeth at a time, and means for shifting said oscillating frame for throwing the ordinaryand auxiliary es- 75 capements alternately in. or out of gear, substantially as'and for the purpose described.

3. In a typewriting machine the combination with the ratchet wheel of the carriage controlling device, the oscillatin' frame and go the ordinary escapement of the, atter, of an auxiliary escapement arranged inversely oh the oscillating frame, opposite the ordinary esca ement and adapted to allow of the rate et wheel advancingtwo teeth at a time, 5

and means for shifting the oscillating frame of the controlling device bodily; in a horizon tal plane to disen a e the teet of one of the esca'pements fronl the ratchet wheel and en:

gage the teeth of the other esc'apement into the latter, and means for locking the oscillating frame in its 0 erating position, substan, tially as and for t e purpose described. v

4. In a typewriting machine the combination with the ratchet wheel of the carriage 5 controlling device, theoscillatin frame and the ordinary escapement of the atter, of anauxilia escapement arrangedinversely on the osc' lating frame, opposite the ordinary esca ement and adapted to allow .of the ratc et Wheel advancing two teeth at a time, of arms sup orting at one end the oscillating pins of the rame and oscillating on the other I ends on the frame of the typewriting machine, of a strap rigidly connecting the two 05 oscillating arms, of a downwardly pro'ecting pin on the middle portion of the sai strap an d on a ing an inc ined slotof an operatin bihslir ably mounted on theframework o the typewriter, substantially as and for the 10 purpose described. 5. In a typewriting machine the ,combinaev tion with means for effecting step-motion of the carriage, of an auxiliaryspac ing escape ment, of oscillating arms, carrying the escapement frame, a strap rigidly connected with the said oscillating arms, a pivot down wardly projectin ,frornthe said strap and engagin the slot o the slidable o crating bar,

this s ot being obli no in its mir dle part and atits end part para lelto the direction of motion of the operating bar, substantially as and for the purpose set forth. I

6. Inia typewriting machine,the combination with a ratchet wheel forming a partof a carriage controlling device, an oscillatory frame surrounding said wheel, a main escapement mounted thereon, an auxiliary escape: merit for said frame, said main and auxiliary escapements being disposed on said frame'lso at opposite points of said wheels and means 5 opposite to said main escapement, and means for shifting said frame to alternately throw said main and auxiliary escapeme'nts into operative relation with said wheel.

7. In a typewritin' muchine the combination with it ratchet wheel, a main escape/merit mechanism adapted to 000 ierete with said ratchet wheel at one oint t iereol', an auxilmy .escapenlent inec ianisni adapted to co 3 operate with said ratchet wheel at a point for alternately throwing said main and auxiliary mechanisms into operative relation with said wheel.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

, JEAN VOLRER. Witnesses:

JEAN \GRUND,

CARL GRUND.

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