US925530A - Type-writing machine. - Google Patents

Description

E. THI'TREY.

TYPE WRITING-MACHINE.

APPLIUATIONIFILED SEPT. 5,1907.

925,530. Patented June 22, 1909.

2 SHEETS-SHEET l.

W/ T/VESSES g5. J LaMQZw/MM E. THUREY. TYPE WRITING MACHINE.

APPLICATION FILED SEPT. 5,1907.

925,530. Patented June 22, 1909.

2 SHEETS-SHEET 2.

A UNITED STATES PATENT onnicn.

EDUARD THUREY, or KALK, NEAR COLOGNE, GERMANY, AssIGNon TO THE ASSOCIATION 'rnnany-scnREIBMAscnmnN-onsELLscnAFT MIT BESOHRANKTER HAFTUNG, OF

COLOGNE, GERMANY.

TYPE-WRITING- MACHINE.

Application filed September 5, 1907. SerlaINo. 821,489.

To all whcrm it may concern:

Be it known that I, EDUARI) Ti-n'ine'r, of Kalli, a citizen of the free city of Hamburg, and Whose post-otiice address is No. '11 Neuerburgstrasse, Kalk, near Colo ne, Prussia, German Empire, have invente new and useful Improvements in 'llype-VV'riting Matant that the various devices of the whole machine should cooperate in a" definite and exact manner, as otherwise good and uniform impressions cannot be obtained.

The improvements can be applied without the general arrangement, and especially to usual normal feed of the paper, having to be altered.

.I will describe my invention with reference to the accompanying drawings.

Figure 1 is a planof the'machine, the parts which are not required to be shown for the explanation of the invention being omitted; Fig. 2 is a front elevation; Fig. 3 is a side view, partly in section, of the rear part of the machine; Figs. 4, 5 and (3 show separately, and drawn to a larger scale, the regulating device for thekey-levers, and Figs. 7 and 8 show, also drawn to a larger scale, the device for actuating the typecarrier.

In key-board type-writing machines, in which the type-wheel does not itself: strike against the paper, it is necessary to employ a hammer, plunger, or thelike, (Ifwill refer to it the hammer),.which pressesv the paper from behind against the types of the type-carrier which are brought into position for printing. As the sheet-of paper, on acr-ount of its movability upward, downward, and from side to side, requires a comparatively large amount of space, some difiiculties are experienced in transmitting the movement of the keys to the hammer.

ln known arrangements the transmission nunubcrs'rrbyrundirectly below the carriage stralghtway to the hammer, but this neccssi- Specification of Letters Patent.

Patented June 22, 1909.

rom beind, and accessory devices become neces- Both this mode of feeding the paper and the accessory devices are open to obJection. In order to retain the convenient normal feedin of the paper, the horizontal spindle of the hammer, which lies in a ver tical plane, has been so far extended that it is possible to go around the space taken by the paper, am behind the paper a s indiev has been arranged in a direction para lel to thearbor of the hammer, the keys imparting a rotary motion to this spindle, wlnch mo 'tion is transmitted to the arbor of the hammer by a link arrangement,but this device has dpsadyantagos winch it is the purpose of this invention to obviate, while at the same time the normal feedihgof the paper. is retained, the use of elastic members being dispensed with, so that an instantaneous anddirect transmlssion of thermotion 1s ef- .t'ected. In the older arrangement the 1on rod-guide causes a certain amount 01 spriuginessbecause the various parts must not be made too heavy, and this springiness retards the transmission of motion, thereby affecting the speed of the machine. -In addition to this a part ofthe power exerted is lost, so that the quality and number of copies obtainable are-not such as is desired.

The machine in accordance with this invention has the further advantage that a strong, inert-using acceleration is imparted lothe hammer, while the parts operating the hammer preserve an almost uniform velocity. The difference in the action at the moment when the hammer receives the motion for the printing of the type is so'great that the hammer has only to move a short distance, the intermediate members being no longcr I subjected to the force applied to the key. The momentum is thereby generated almost entirely in the hammer and delivered to the type with but little loss. The momentum generated in the intermediate members of tates change in the normal feedin 'of the paper which jfinust be introduced In the machines hitherto in use, the motion of the hcnuner takes place in a vertical plane, while in accordance with this invention, the hammer moves in a. horizontal plane. This not only permits of e nonelastic connection between the key and the hammer, butitalso elicctssriving of power, because A hammer moving upward requires more power to move it. than a hammer moving in e horizontel plane.

A further ndventogeq'of the construction ,according to this invention is that the mem bers transmitting motion to the hammer are utilized to operate a ,lever. for the following purpose. The sheet ofpeper is lzcptby e spring a few millimeters away iron the type-carrier so that the inspection of what has been written is possible to such an extent that even the last letter printed is always in view. hen the hammer is operated, the said lever brings the sheet of paper slow] to within a short distance of the tv 1c whee say half a millimeter. If this lever were not rovided, the freely moving immmer woul have to bring the paper into post tion, and this would not only consume a part of the momentum, but would also, on account of its suddenness, produce an objectionable crackling sound. These disuct vantages are obviated by the present invention. Extra expenditure of power for movin g the lever is scarcely needed as on account of the slowness ofits motion, the frictional resistances are slightand the spring which retracts the papcrfrom tlietype cariiicr" ussists the rearward inovenient of the whole hummer mechanism so that the hammer retreating spring may be made correspondingly mounted on twe spindlesfi, stirrups 4 being secured to srleors-, To the let's-bond arbor 5 erese cured stirrup 4: and lever 6, while a stirru t and lever 8 are also secured to the right lend erlaor fi. vThe levers 6 end 8 are so connected by erod 7 that both stirrups i movesimultaneously, and if the stirrup i at the left-liand side be depressed by a type.

key, the right-hand stirrup e is likewise .lepressed. Themovement is transmitted by a link 9, jointed to the lever 8, to a U-shaped member consisting of an arbor 12 and 11p ward arms ll "end Depression of the stirrups 4i consequently. results in a nlovc-v rnent to the left ii the arms ll and 13.

Between the ri l 13 and the hammer 19, 21.,(whmh-tdrnstn the pin 20), 15 it link emcee connection consisting oat eonei' i that motion of the arm to the 212v the hammerhmed 2i egeiit st the ty rier i0 and the-paper between ti: Wheel and the pap-enroll 18 is iirong'liti to contact with the selected type of the tygic carrier.

When the head 21 of the hammer :21, is (on the key being depressed} in the vi ity of the type-cylinder 3.43, the ence of: henun r, the puslmod 1% end the-pivot pin 20 of the hammer ere. nearly in. the line. Bytloe change in the position of the push-rod i l. the hammer lies quieter ecceleration, and, the momentum of tlie lia se er nicr is but little impeded it, shortly l elfore the hammer reaches the type-cerrior, the motion oi the type-key ceases to act on one of the stirrups 4. This is necessar in order to obtain a neat impression, for before this can. take place, the type-cerrier mustlilfi brought to rest, this lieing'sccureti by previous arrest of the typedrej operating; type-carrier. 0n the return typed? the hen'nner mechanism is moved one the spring-22 (Rig. 2,; until the head 21 meets witlicstop 22, when t whole system is again in its initial position;

The Ll-shaped piece constituted the arbor 12 nodal-111s 11 and i3 not onl. to transmit the motion of the kcws to the hammer but also causes, at tile same time movement of u lever 16 pressing the paper toward the typc-cerrien This effected means ofa rod 15, whit-3 0 connected by the arm 13 of the c Jul li-sheped member (1ll2-13 This rod 1:3 is pivoted near to the pivot of the arm Till so that the movement of the lever 16 is, in conse qnncerery small and slow In order to-olitein good printin it is not only-neces ary to consider tile n recent of the hammer. but also the cc spending nuivcmcnt of tl e type-carrier, the uctioii of which should be certain. Au owling to the 1 type struck, this carrier or the member transmitting the HM mc-ntto we eliy rotate to the right, or 2'35 1 n the example shownin a. motion is produced by two it? 36, 3S, pivoted on the.spite" acting. with the toothed W1) mounted on the 5 indie .li) by type-cerrierlO is rrivenh In a of this kind it is as a rule neces' engagemcntof one of the sectors 911i take place when the otlier'sector comes into ope 'ation and that each of the meters finds the driving wheelcerresponding to it in the proper p'ositionteady for gearing, liters Over, the licdyto be set into rotation Si. mid luive a snia llfmass end l)? brought toltestu without causing. Zobjcctiorieble noise. simyfli'city .oftlie' whole construction coimnon with all arrengeinents used in coin tion 11, 41, a plain portion 42, 42 and a hookehaped projection of the absorb the momentum.

deep recessed smooth portion 43, 43. These parts co-act with the corresponding parts 44, 45, or 44?, 45 bf the respective sectors. The toothed portion of the wheels gears with the toothed portion of the sectors, while the plain portion prevents the engagement of one sector when the other is operated. The more deeply recessed part allows lay for the hook-shaped projection of the sector which at rest so that the driving wheel which is not in gear follows the motion of the other, the drivin wheels having no motion relatively to eath other. The side face of the part unprovided with teeth limits the backward motlon oi the driving wheel, the toothed sector which is at rest acting as'a stop, It both toothed sectors be at rest,,the hooked projections lie against the corresponding side faces of the part not provided with teeth, the driving wheels being thereby held in their mid position. wheels is effected by the toothed sectors, It is in this arrangement of importance that the last tooth of the backward moving toothed sector comes out of the corresponding tooth space in the driving wheel to such extent that the said tooth is clear of the path of the teethof the driving wheel. lit will be suiticient as a rule for the toothed sector to initiate the return motion of the toothed wheel. The momentum of the driving wheel and the heavier parts secured to it is sufi'icient to accomplish the remaining part of the movement, which is small but sutiicient for accurate working. In cases however in which the backward movement takes place but slowly, namely, when the forward movement requires but a very small rotation, the fric tional resistance may be large enough to In this case, the driving wheels must he returned to the mid position by a special device. in the arrangement shown this is obtained by so forming the working edge of the hook-shaped projection that the points of the hook exert a leverage on the wheel, a slight rounding of the hook points and of the side edge of the plain part of the driving wheel.

The movement of the spindle a O is, by

neans of hevei wheel 32. 33, transmitted to the arbor H. and type-carrier 10. in order T he return motion of the driving which assisted bythat the motion of the type-carrier shall he not greater than is required for the type struck, a cylinder 29 isprovided which car-' ries stops 30.and 31, the depth of which corresponds with the position of the type on the type-carrier. When either of the keys is struck, one of the said stops 30, 31, comes into the path of the corresponding key-lever and limits its motion at the moment when the type to hcprinted reaches the printing position.

()n a key being struck, in machines of a type bar pattern, or iv those having a type- -arrier of the above described kind, several devices are set in motion at the same t1me.

In the arrangementfin accordance with this 1nvent1on,"these devices are the type-adjusting device, the type-printing device, and the device for the escapement of the paper-carriage (the latter is not shown in' the drawings). In the cooperation of these devices,.a certain sequence, or' time interval, for setting the parts in motion is necessary. Parts not accurately arranged, or worn out by friction, must be reradjusted' after they have been some time at work. Hitherto this I'E'fldjllSh': menthas been eilected by filing in the case of metal parts, which .is troublesome, any required addition of material being still more troublesome. 0n the score of simplicity it is preferable to arrange a regulating device on the separate key levers, ut usually the material, or the shape of the keylevers, prevents this, especially if adjusting screws are to be employed. Furthermore,

both on the score of simplicity and rapid manipulation, it is absolutely necessary to make the device easily accessible by means i of. screw-drivers, spanners, and the like.

The essential part of the said device consists,

as shown in Figs. '2, 4, 5 and 6 of a U-shaped member 25 embracing each of the key-levers, the said U-shaped member being pivoted at 39 to the lever 1. The adjustment of the U-shaped member 25 on its pivot is such, or it is clamped to the key-lever so, that the U-shaped member cannot fall down. This can be secured either by the natural tension of a riveted pivot, or by a suitable spring being given to the sides 37 (Fig. lTo

, 8 t iat obtain this springing action, the part connects the two sides 37 is somewhat cut away for about half the length of the memher, the part 38 which is left forming, or carrying, the stop .t'or a hair 24 (Fig. 2) extending underthe key levers, or any other member transmitting the motion of thekeys. A screw 26 serves to adjust the-member at various distances from the lower face of the key-lever. For the reception of the screw 26, the member 25 is provided with a projection, or thickening, 27. A. jam-nut 28 serves to secure the screw in position. If

the key-levers be of metal, the end' of the the lower face of the lever, but if the levers be made of wood, a resisting striking plate for the end of the screw may be formed by means of a Ushaped bent plate with a tongue-shaped extension weh, passing over the wooden lover. v

It will be evident that the Getails of the apparatus may he modified in many Ways without departing from the spirit of this will rock the bar 12 and oscillate the hammer, substantially as described."

2. A typewriter comprising a movable type carrier, a hammer oscillating in ahorizoi'ltal plane, a lever independent of the hammer for pressing the paper toward the type we .1191, key mechanism and a system of links.

and hers for transmitting the movement of the key mechanism to the hammer anti lever, snbstentially as described.

In type-writing machines with movable type carrier heimner mechanism and key mechani'sn'l, the combination of the type carrier, with two sectors having hook shaped projectioi'ls two driving whee s operating the type carrier the said thriving wheels'having a toothed portion, a raised smooth portion anti a recessed portion, essentially as and for the purpose stated. i l. in a typewrltmg machine with movable .ty 'ie-carrier, ltammer'mechanism aml key mechanism, the combination of a key lover, a U-SllbtPQtl member, pivotally attached to said key-lever, the side pieces of sa'itl member being adapted to clamp the same on the keylever, a projection on the member and a screw in said projection for adjusting the member at various distances from the lower face of the key-lever, essentially as and for the purpose stated.

5. A typewriter con'zprisingamovable type carrier, a hammer having oscillating movement in a horizontal plane, a lever independent of the hammer for pressing the paper toward the type carrier key mechanism,a rocking hal- 12 located. transversely-of the machine at one end thereof, 11 rights on saitl bar, a link connecting one 0 said uprights with the hammer, a link conneetin the same upright with theleveryajthird lin connectecl with the other npri' ht, and means for connecting said third linii with the hey mechanism, whereby the movement of the keys will rock the ear 12 and oscillate the hammer and lever.

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

EDUARD rnnnnr.

"Witnesses? Loans Vlmnonn",

M. Kn'nrrmns.

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