US1052356A - Type-writing machine. - Google Patents

Description

E. M.. v. MARGHTHAL.

} TYPE WRITING MAGHINB. APPLICATION FILED mums, 1912.

Patepted Feb. 4, 1913.

UNITED srArEs PATENT UFFIGE.

EDUARD MAREK v. MARCHTHAL, OF VIENNA, AUSTRIA-HUNGARY, ASSIG-NOR TO SIE- MENS & HALSKE, A. G., OEBERLIN, GERMANY, A CORPORATION OF GERMANY.

TYPE-WRITING- MACHINE.

Specification of Letters Patent.

Patented Feb. 4, 1913.

To all whom it may concern:

Be it known that I, EDUARD MAREK v. MARCHTHAL, a citizen of the Empire of Austria-Hu'ngary, and residing at Vienna, Austria-Hungary, have invented certain new and useful Improvements in Type-Writing Machines, of which the followingis a specification.

In type printing machines, in which the types are arranged on the periphery of a plurality of type disks, it becomes necessary to axially shift the type wheel which com- I prises these disks, in order to bring one or the other desired type disk into alinement with the printing hammer to print the .desired type onto the strip which passes between the hammer and the type wheel.

invent-ion relates to such axial adjustment of type wheels in machines of thecharacter described, and theparticular features ofsuch adjustment are that the wheel, which tends under the action of suitable means, to axially assume a normal end position, is held by a stop in the adjusted position, and that as soon as it is to be adjusted into a new position this stop is completely released, so that the wheel first moves into its normal end position before the operating mechanism conveys it into the new position.

In the accompanying drawings I have illustrated my invention and in these drawings Figure 1 is a side elevation of the wheel shifting mechanism. Fig. 2'is an end viewof one of the cam cylinders. Fig. 3 is afront elevation of the clutch mechanism.

Referring to F igl of the drawings 1 represents the type wheel which may consist ,of any number of type disks, integral with it, wh ich canyon their periphery the types used for printing. In the present case I have shown three type disks 1*, 1 1 on In the machine of which the illustrated mechanism forms a; part the type wheel iswheel 1 but the types on their periphery are ';not illustrated. Wheel 1 is keyed to shaft 4 which is. driven by the gear wheel 5 from me shaft rotating mechanism (not shown).

intended to normally rotate and to be stoppedfrom rotation predetermined positions only when the desired type is in front of the printing device, so as to permit the latter to operate. To permit freedom of axial'movement of the wheel irrespectively of its rot'ative mot-ion wheel 5 is splined on shaft 4 as shown at 5. The printing device is merely diagrammatically illustrated by the hammer 3 to show its location and it operates by striking at the proper moment against paper strip 2 which is thereby pressed against the desired type of the disk which is shifted into alinement with the hammer by the mechanism which forms the subject matter of the present invention.

On shaft 4 is disposed a-s ring 7 which bears at one end against the xed abutment 6 and at its other end against a collar 8 fixed on shaft 4 so thatthe shaft normally tends to move downward. The lower end of shaft 4 bears against a stop plate 10 carried by a lever 9 pivoted .at 11. A spring 12 tendsto press this lever against the stop 13 in its lowest position I shown in dotted 16 in the positions II and III through 'detent or nose 15, provided on lever 9. This lever 16 can. rock about the axle 17 and carries an antifrict-ion roller 18 pressed by the spring 19 against a cam 20. This cam is free to rotate on a timing shaft 24 but.

can be coupled with it by the clutch 22.

As shown .in Fig: 3 this clutch consists of a grooved collar 22* splined at 24 to shaft 24,

and axially movable by means of a fork lever 25, whose pins 22' engage in the groove of the collar. Lever 25' is pivoted at 26 and carries at its free end the armature 23' of an electro-magn'et 23 so that when the latter is energized and its armature attracted, collar 22. is shifted to the right. A spring 25' normally holds armature 23' in off position. Collar 22 carries at its end facing cam disk 20 a. jaw 22 which cooperates with a cor respondingly shaped jaw 20' on disk 20 'so that when collar 22 is shifted to the right both jaws engage and thus couple disk 20 to shaft 24.

The cam 20 has a groove 21 in which and 35 nose 14, however, only as long as it bears againstthe stop 32.; Its other arm has a nose 34 which coacts with two stops 35' the stop 35, as shown in full lines in the drawing, or on the stop 35 or, as shown in dotted lines org neither of them. In the I latter instancethe end 33 of the vertical arm of the lever and the nose 14 remain in contact during the entire downward movement of the slide 28, and the lever 9 is rocked so that its stop 15 is'enga' 165. with lever 9 'lIl'IJOSllZlOIl III. When the nose 34 is engaged by the stop 35 the shaft 4 .of the type-wheel is lifted only to ged. by the tooth the second pOSItIOII' II, while when the nose 34 is held by the stop 35 the bell. crank 30 is rocked before the nose 15 has reached 30 the tooth 16' so that the shaft 4 of the type-wheel descends into its lowest position I. The lever 35 rocks about an axle 36 and is pivoted at37 to one end of a slide 38. This is pulled by a spring 40 so that the antifrictionroller 39 journaled'at its other end is pressed against a cam 41. This cam 1 is keyed to shaft 4, as shown in Fig. 2.

'When the shaft 4 is arrested so. that the roller 39 is located at one of the points, I, II or .III inFig. 2, which correspond with the positions I, II, III of shaft 4, the magnet 23 is energized by'means not shown'here so that disk 20 is coupled to shaft 24 and this shaft is then revolved one revolution by means notshown here.- When timing shaft 24 rotates thecam 20 is driven by the clutch 22,.the roller 18 runs on to a projecting part 42 ofits periphery, and the stop 15 of the lever 9 is released owing to the bell-crank lever, 16 being rocked. The shaft 4 of the type-wheel is then driven by its spring? into the lowest position I. As soon as the roller 18 has left the raised part 42 .of the cam 20 the part I of the groove 21 has arrived at'the pin 27 and the downward movement of theslide 28 begins.

' According to the rotary osition of the shaft 4, the part I, II or II of the cam 4'1 'is under the roller 39 "and, accordingly, during the downward movement the nose 34 of the lever 30 abuts against the stop or moves freely past both of the same, and the shaft of the type-wheel is elevated into its highest position III, or into its middle ofa -lever 35. .This lever can be rocked so'ithat the nose v34 bears either on move the sha the type wheel stops in the proper position the desired type is presented in frontof the printing hammer.

1-. 'In a machine of the character described, the combination with an axially movable shaft and a type wheel having parallel rows of characters fixed on its peripher and a printing device opposite the typew eel, of a stop, aspring tending to move the shaft against the stop, means for arrest-ing the stop in predetermined positions, a timing shaft, and a cam disposed on the timing shaft and adapted to actuate said means and thereby release the stop.-

2. In a machine of the character described, the combination with an axially movable shaft and a type-wheel having parallel rows of characters fixed on its periphcry, and a printing device opposite the typewheel, of a sto lever, a spring tending to against said stop. lever, means for arresting said lever in predetermined positions to axially place said-shaft int-o correspondingly predetermined posi-. tions, a timing shaft, and acam disposed on the timing shaft and adapted to actuate said means and thereby release the stop lever; said timing shaft cam having a cam groove, a slide having a pin engaging in said groove, 3, bell crank lever mounted on the slide and adapted to throw said stop lever out of its normal position with one arm, a spring tending to maintain said bell crank in engagementv with the stop lever, and an adjustable stop adapted to engage withrtheother' arm of said bell crank to thereby disengage its first arm from said stop lever. 7 I I 3. In a machine of .the character described, the combination with an axially movable shaft and a type wheel having parallel rows of characters fixed on its peripher and a printing device opposite the type w eel of astop lever, a spring tending to move the shaft against said lever, alocking bell crank for arresting said lever in predetermined positions to axially place said shaft finto correspondingly predetermined positions, a timing shaft and a cam disposed on the timing shaft and in o ment with said locking bel crank -to release the stop lever, said timing shaft cam also having a cam groove, a slide'having a pin in engagement with said groove, a releasing bell crank mounted on said slide and adapted to. throw saidstop leverout of its erative engagenormal position with one arm, a spring tending to maintain said releasing bell crank in operative engagement with said stop lc- V8i,- and an adjli stable stop adapted t6 en 7 ame to this specification in' the presence of age with the other arm of said releasing two witnesms.

rank to thereby disengage its first arm a from said step lever, and a cam' fast'on EDUARD MARE]; MARCHTHAL' '5 said axially movable shaft foradjusting the Witnesses:

said adjustable stop. AUG ST FUGGER,

In testimony whereof I have signed my ADA MARIA BERGER.

e Copiesot this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Weshingten, D. G.

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