USRE11848E - Type-writing machine - Google Patents

Description

N0. ll,848.

R'eissued Aug. 2| R. J. FISHER. TYPE WRITING MACHINE.

(Application filed Mn. 8 1999.)

2 Sheets-Sheet I.

No. ll,848. Raissued Aug. 2|, I900.

v R. J. FlSHER.

TYPE WRITING MACHINE.

(Application filed Mn. 8, 1899.1

' 2 Sheets-Sheet 2.

31 10 0 I :IIIIQIIIITLlLf 1 lwlj ljacblop Iv ay lflommy I v i ,vance ctits pivotal point) the centrifugal force acting during thedescent ofa' type ba'r' to its printing position will bring the -other:

or upper-case type face '16 intoprinting position, as shown in full lines in Fig. tlpuuless a positive lock is employed to maintain thetype head or carrier in its lower-case position, as shown in dotted lines in said figure. Thus it will be seen "that the movable type head or carrier'i's retracted or returned to its normal or lower-case position. by gravity and is adapted to be extended? centrifugallyto produce the impression of an n p'per-case character. v.

The means which I;have-iilustrated, in the drawings for securingthe type head or carrier in its lower-case position include a pivotal trigger 17, mounted upon the type-bar in the lower or inner end of aslot formed by the bifurcation therein aiid liavingv the free ex; treniityof its lockingrai'in 18 inoperative relation with a finger lfhrformed as an extension of the ear l2 andproject-ing beyond the' rear'or outersideof thetype-bar. This locking-arm of the-trigger is normallyarranged in the path-of the finger 19, as shown in Figs.

'- with theronnded' hub or friction-faceil'of the trigger. I Inasmuch as this holding vdevice, consisting of the brake-spring and Eriction-face, is c'onstructedto maintain the trigger in either its operative orinoperative positi0n-,.respectively, in or out of the path of the 0f. the type heads or carriers.

linger on the t ype head or carrier, it is obvious that such means" must beprovided for tripping the trigger as will proyide' fonmov:

' ing the samein eithcndirection and which may when required be nroyerlwholly out of operative relation with thejtriggei"i'norder that a succession-of impressions of" either upper or lower case characters may be'n'iade' without successive manipulations of thetripping devices. In the drawings these means are constructed to include a trip-arm 22 on the trigger, said trip-armhaving opposite convexed and concaved operating-faces, and atrip 23, arrangedfor adj ustme'nt to brin it in the paths of the trip-arms, wherebyfiie triggers may be disengaged from the fingers Inasmuch as thelower-ease characters are more frequently 'used'in ordinary work, I preferably arrange this trip normally outlof thepaths of the trip-arms, as shown in full line inFig. 2, and I J preferably support the trip yieldingly in its normal position to provide for movement in oppcsitionto the force which holds it in its normal .position when: it-is desired torelease :the {type-heads orcarriersto print upper-case characters. In the drawings this trip is const ructed of a continuous band or seinirir gv and 'itis disposed contiguous to the upper-or concave faces of the trip-arms, whereby when depressed against the force employed for the trip-is arrangedin contactwvith the eou= caved faces of the trip-arms and is adapted to depress the latter during the forwardswinging movement of a type-bar in the. act of moving the latter to its operative or printing position by'in' eans ofa type-ke'y.

If after the release of atype'head or 'carrier and the operation of the type-bar "supportingthe same to cause the impression of an upper-case character thetrip is' returned to its normal position out of the paths of the trip-arms, the type head or carrier \vill, 'as above described, be returned tor-its lower; case positionby gravity; but in order to returnthe locking device or trigger to its 0;}- erative position I have found it expedient to employ a buffer 24., arranged in thepathsof 5 the trip-arms 22 for contact with the convex faces thereof. In the construction 'illustrated this buffer consists of a semiringof wire rod or its equivalent, which is perms-"- neutly fixed to the carriage-and isadapt'edto IOU return each trigger to itsnoi'mal or operative position after the actuation of a type-bar. This uniform operation of the buffer isentirely independent of the position of the trip, and hence the trigger of a given type-bar will be returned-to its normal. or operative posi- To this stud areattached the arms28 of a spider carrying the trip 23, said spider forming a vertically-movableframe by which the trip is supported; The case-key 29 has its stem 30 connected to a case-key lever 31,which is fuleru med terminally, as at 32, and ispro- 'vided at anintermediate point with-a lateral pin 33,engaging a similar pin 31L on the stud-25. From the above description it will be seen that the trip, \vhich forms the actuator for the lockingdevices by which the type heads or carriers are, maintained in their normally-- retracted orlower case position, is arranged permanently outo'f the paths of the type-bars, inasmuch-as the paths of the type-bars do not intersect that of the trip, and normally out of. the paths of 'the trip-arms forming partsotl said locking devices and is adapted to head justed to arrange it in the paths of said trip arms to release the type heads or carrier}; whereby the upper-case type may be brough into prin ing" position by centrifugal-force due-to them'ove'mentof the type-bars in ap 11 ,e4s va I preaching the printing plane; It will-be seen also that the type heads or carriers after ex: tension een'tri'fiug'al force fareflreturned to their normal or retracted position bya con- 'stantyielding force, consisting'uin the con structiozi illustrated of gravity, 'whicli 'iso-p v erativc' by reason of the: preponderance ofweight ineach type. head or carrier i'n'advan'ce ofits pivotal point, but whereasthe type heads or carriers are returned to theirnormal or lower-case positions by a constant yielding force, as gravity, the triggers by which the type heads or carriers are locked'in their normal or lower-case position are actuated to bring them into operative position bya fixed buifer or stationary trip in contradistinction to the movable or adjustable trip,

which is key-actuated and is adapted'to be operated only when the reversal of a type head or carrier is desired to present a different type-face. I H t I Various. changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention. I

Having described my. invention, what I claim is-- p 7 1. In a type-writingmachine, the'combination with a pivotal type-bar, of a type head or carrier movably supported thereon, the

same being movable to its adjusted position by centrifugal force, when the type-bar is moved to the printing position, substantially,

as specified. 1

y I 2.. In atype-writing machine, the combination with a pivotal type-bar, of a type head or carrier movabiy supported thereon, means carried by the type bar'for holding the type head or carrier inits normal positio'n,-and manually-operated mechanism for actuating the said means by direct engagement there,- with, to provide for the release of the type head or carrier.

3. In a type-writin g machine,the combina-' tion with a pivotal type-bar, of a type head or carrier movablysnpported thereon, a locking device carried by the type-bar for holding "the typehead or carrier in its normal position, and manually-operated means adapted to directly engage with said locking device to release it from the type head or carrier, said means being permanently located outside of the path cf the type-bars.

4. In a type-writing machine, the combination with a pivotal type-bar, of a type head or carrier movabiysupported thereon, alock 'ing device carried by the type-bar for holding the type head'or carrier in its normal posh,

tion, and a key-actuated trip adapted to directly engage with the locking device to release itfrom the type .heador carrier, ,the

trip'being permanently located outside of the path of the type-bar and shiftable to and locking device; i a v; 5. In a type wri ting .na-chine, the combination with apivotal type-bar 'of a type head away from a-posi-tion forscooperatin'g withithe or carrier'movably supported thereon, a locking device carried by the typebar and normally arranged in engagement with the type head or carrier'to maintain it in its normal positiomand a key-actuated trip yieldingly held out of and adapted to bee moved into the'patho'f a' trip-arm forming a part of said loekingdevice, substantially as speci fied..' I I I j' p 6, In a type-writing machine, the combination with a pivotal type-bar, of a type head or carrier mov'ably supported thereon, a looking device carried by thetype-bar for securi-ng the type head or carrier'in'its normal position, and fixed and movable trips for cooperating with a trip-arm forming a part of said locking device, the fixed trip being permanently arranged int-he path of the triparm, and the movable trip being capable of adjustment into and outof the path of the trip-arm, substantially specified' 7. In a'type-writing machine, thecombination with a pivotal type-bar, of a pivotal type head or carrier, a locking device carried by the type-bar for securing the type head or carrier in its normal position, said locking device including a trip-arm, a stationary trip arranged permanently in the pathof said trip-arm for moving the locking device into engagement with the type head or carrier, and akey-actuated movable trip yieldingly held out of and adapted to be'adjusted into the path of the trip-arm to provide for dis engaging the locking device from the type head or carrier, substantially as specified.

too

I 8. In a type-writingjinachine, the combina tion with a pivotal type-bar, of a pivotal type headorcarrier, a locking device carried by the type-bar for engagement wit h the type head or cam-lento. secure it in its normal position and yieldingly held in either its opera= tive or inoperative position, and stationary and :movable trips for actuating said locking .device, the former being permanently ar-- ranged in operative position and the latter being adjust-able into and :out of operative relationwith the locking device, substantiallyas specified.

9. In a type-writingmachine, the combination with a pivotal type-bar, of a pivotal type head or carrier, apivotal triggeriadapted to be arranged in engagement with the type head or carrier to secure it in its normal position and having a triparm, and fixed and movable tripsfor engagement with said trip arm, the former being permanently in opera- .tive position and the-latter being spring-ac- ,tuated and adapted for movement into and out of engagement with the. trimarm, substantially as specified. I v

" 10. In'atype-writing machine, the combination with'a pivotal type-bar, of a pivotal type head or carrier, a pivotal trigger carried by the type-bar to maintain the type head or, carrier in its normal position and having a trip-arm, a brake-spring arranged in contact with a friction-surface of the trigger to hold the latter in either its operative or inoperative positiomand fizied and movable trips for cooperation with said trip-arm, the latter be.-

ing adjustable into and out of operative position, substantially as specified,

11. In a type-writing machine, the colnbinationwith a pivotal type-bar, a type-carrier movably supported thereon, and means, asa trigger, for normally holding the type-carrier in one position, a tripfor engagement with the trigger and mounted for movement into and oilt of operative relation with atrip arm carried by the trigger, and means for actuatnonnn'r JOSEIII mum.

Y \Vitnesses:

WILLIAM A. CUNNINGHAM,

CHARLES '11- RIDDLE.

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