US1227847A

US1227847A - Type-writing machine.

Info

Publication number: US1227847A
Application number: US14506?17A
Authority: US
Inventors: Jesse A B Smith
Original assignee: Underwood Typewriter Co
Current assignee: Underwood Typewriter Co
Publication date: 1917-05-29
Anticipated expiration: 1934-05-29

Description

J. A. BVSMITH.

TYPE WRIUNG MACHINE. APPLICATION FILED may. all.

Patented May 29, 1917;

3 SHEETS-SNEET 1.

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TYPE WRITING-l M-A'CHI NE. 4

APPLICAUQN FILER LAN. 2.9 1917.

Patented May 29, 1917.

3 SHEETS-SHEET 2.

w IT M E s s ts? J. A. B. SMITH, TYPE WRITING MACHINE. APPLICATION mu: um. 22. m1.

Patented May 29,1917.

" a SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

mass A. n. surra, or emnnoox,

coimnc'ricu'r, AIIIGIOI, r mnnnwoon 'rrrnwarm courm, or raw max, n. 1., a concurrent or returns.

urn-wanna mom To all whom it may concern:

. like may be fed Be it known that I, Jesse A. B. SMITH, a citizen of the United States residing in Glenbrook in the-county of I airfield and donnecticu't, have invented certain State of Typenew and useful Improvements in Writing Machines, of which the following invention is an im rovement on the patent fore it was typewritten on, the card to hugthe the platen and the to Alfred G. F. patented February 16, 1915 and also upon the application of-Alfred G. F. Kurowski,

'No. 40,572, filed July 19, 1915.

Where a card is laced in the ordinary manner of-a'work-s eet aroundthe platen, it. has a tendency to buckle away from the platen and--therefore interfere with the proper typewriting on the same; and if the card should be forcibly curved to fit snugly on the platen, it has to be subsequently uncurled, and is therefore not in quite as good condition as if the typewrit" ing. had been done with the card flat.

In the present invention the card is. maintained flat in a frame which feeds it line by line past'the printing point of the typewriting machine with a corresponding line-space .movement of the platen. This keeps .the card in as good condition as beand also enables platen closely at the line of. rintingyso that the typ'ewriting is neatly one.

, frame tacarry the card is arranged to have a separate return movement from the platen I positioned'for the initial line of writing. In order that the action of the line-space lever, which controls both the rotation of step-by-step advancing movement of the card frame, may be light, the card-carrying frame has its own poweroperated actuating means in the nature of I mune of was I'm-i. Application lied Jimm as, im. loriel Ia. 10,0.

urowski, No. 1,128,612,

sothat a new card can be readily a spring barrel controlled by an escapement mechanism. The'escapement mechanism is controlled by the line-s ace lever. H

Other features and a vantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a sectional view taken from front to rear of the machine, with parts omitted to simplify the showing.

Fig. 2 is a fragmentary perspective view show ngs card in position on the frame and its relation to the platen.

Fig. 3 is a front-view in elevation of the card-carryingframe showing its relation to the platen and to the mechanism which controls its step-byste advancing movement. Fig. 4 is a detai ed. perspective view of the escapementlever.

Fig. 5 is asection throughthe spring barrel or drum, which forms the motive power for advancing the card-carrying frame.

Fi 6 is a view fromabove looking. in the (irection ofthe arrow 6-6, in Fig. 1, and showing how the line+space lever operates the escapement'lever ifor the cardcarrying frame.

Fig. 7 is a front view in elevation similar.

.to Fig.- 3, except that the escapement lever has been moved to permit-thesecondary e'scapement dog to come in en agement with an escapement rack, permitting a etc -bystep advancing movement of the car -carrying frame.

Al habet keys 1 and numeral keys 2 presswhich is maintained in a position corre;

sponding to upper-case writing.

The platen 1 receives sit l m l s movement in .the. usual manner by, means of a spring barrel, not shown, milerthe control of the-type actions. i'lhisfisdone by a heel lQ tm eachof the type-bars striking ,a universal frame'll at the operation of Patented maye, r917.

' card-car each key. The frame 11 is bent downwardly to form a loop 12 to avoid the parts of the card-carrying mechanism.-cooperat ing .zwith the platen. This frame rocks the usual dogs 11,-: and 14, so that-the rotation of .an escapel'nent wheel 15 is controlled This escapement wheel n turn controls the,

rotation of a pinion 16 which meshes with a rack 17 carried by the carriage 72 The type-bars 5 print by means of the usual-ribbon 18, which is broughtin' play-by ,a vibrator 19 in the usiial manner, except that the vibrator is bent down and up to form a loop at 20, so as to avoid the parts of the cardcarrying mechanism similar to the uni versal frame 1- l For support n he card-carrying and feeding mechani n on the carriage so that it will. have a step-by-step letter-feeding movement with the carriage, there is provided a casing 21, 'Fig'. 1, which includes a pai of bratkets secured to the carriage .7 means" of screws 22-3. The casing 21 also includes side plates 24 joined by a. rod

25 and an axle 26 for the platen (3. Mount-- fed on ea chfof the side plates 24, there is .1 7" 9H ]J1OVlCl8(l.-fl \eitically extending iod or, which together for 'i guides or ways fora card-carrying frame 2,-'w li, cl.iis arrapged to slide yertlcally thereon. The-card mymg frame 28 includes sides 2!) providefi with open chanl rels 30 engage the go es 27 and clear bracke. ill, by

means/of which the guides are/simported 0n theside plates 24. The sides 25). pf the fraxnevQS are connected at their lower. ends by l 'ieans of a cross-bar 32-zj lV hen the 'eardcazyy'ing frame is in its lowermost position,

-thishar 32 rests on a. similar bar 33 which joins 'the lowefiends of the guides 27. The; v ng tiame may lie depressed to "its lowe m'g ist p'osit-ionby in ns of a handle oinsthsides 29 at their upper ends.

On the card-carry ng frame, there are provided grooves 35, Fig. 2,,mto which the card may "wrontrolled by an escapement lever 58,

inner of the sides 29 of the the card placed thereon fol-work, can be depressed its full length at one movcn'ient so' as to bringtthe card n proper pixtaposition to t .p1-at'en (5, it is desired that its as each line is typewritten. This movement lso to takerplaqe coinoident with the line-space movem'ent' of the platen 6.

on the which are gea The platen 6 receives its line-space movement n the usual manner by means of a line-space mechanism, ndicated in general vat-37. This line-space mechanism includes the usual line-space lever 38, which operates plied from a separate soiirce, so as to lighten the action ofi} the line-space lever 38. This is accomplis iled byproiziding a spring actu ator. This includes a spiral spring 41, Fig.

5, Which -is{secured atone end to a hub t2 of a worm-wheel. =l3 and its other end to a harrelqor casing 44 on which a gear 45 is mounted; The initial tension on the spring fll is obtainedby means of-a worm 46, which.

is driven byf a finger-piece 47 on a wormshaft 48. The worm-wheel 43 and \vorm 46 when once rotated. to give a desired tension on the spring 41 are self-locking, the pitch being designed for this purp In order that-the action of the sprin 41 may be efi'ective on both sides of the. .ard-t-arrying frame 28, the barrel or casing H is secured by means of a set screw 4!) to a shaft 50 which extends to the opposite side of the cardcarrying frame 28, where it is provided with agear 51 similar to the gear 45 and having a corresponding movement. The

and 51 mesh respectively with gears and 53, provided with pinions 54 and 55 ,mesfhing with racks 56 and 57 on the sides 29 of the card-carrying frame 28.

The spring lliS given the initial tension, by means of the finger-piece 47, when the cardar 'ying frame is in-i ts uppermost position "\Vhen the card-carrying frame is depressed, a further tension is placed upon the spring so that it will automatically unwind later to give a step by-step upward or -:ulvancing movementi'i'if the caml-carrying etu-rn niovetnnlfibecohtrolled line by line framef:

' The advancing li'r'i'ovement of the frame which has a. pair of dogs 59 and 60 arranged t ,o be alternately brought mto engagement with a one-way facing ratchet 61, provided on one of the sides 29 of the ,means of a stop formed on the. lever 58,

so that when the dog 5!) in engagement with the ratchet (S1, upward movement .of the card-carrying frame 28 will be"'|)re'- vented. The dog 59, however, will yield 1 when the card-carrying frame is depressed so that the teeth the "ratchetfil can slip idl by the escapement lever.

en the line-space lever 38is operated to advance the laten 6 a line-s ace, an extension 6650f t e slide 39 wil come into engagement with the lever 58, so as' to rock it against the tension of the spring 63, thereby moving the dog 59 out of engagement with the ratchet 61 and bringing the dog into engagement with this ratchet. This dog 60 has a limited upward movement at its engaging and, so that it will permit a step-advancing or upward movement of the card-carrying frame 28 coincident with the line-space movement of the platen 6. The vertical movement of the dog 60is limited by the stop 65 and another stop 67.

When the pressure line-space lever 38 is moved, the spri space lever, permitting the spring 63 to return the escapement lever 58, so that the primary dog 59 will reengage the ratchet 61 as the seconda dog 60 moves out of enlga ment with t e ratchet. The dog 59 w' l, owever, engage a tooth of the ratchet 61 lower than the one with which it was previously ,in engagement with, so that it catches and holds the frame 28 and the curd carried thereby with a new line at the printing point p of the typewriting mechanism.

- is returned to its normal tially in register withthe 0g 59 by means.

the latter to its normalposition when dis-' placed, as in depression of the card-carry- "111g frame. If a difl'erent extent of advancing movement of the card-carrying frame is 'The movement of the escapement lever 58, under the impulse of its spring 63, is limited by means of a stop 68. The dog 60 osition substanof a spring 69, which also is connected to the dog 59 so as to act to return desired to [correspond with the different line-s acin of the platen, the ratchet'61 may .ta off and is made detachable for this purpose, so that a similar ratchet [of diflerentpitch maybe substituted therefor. Variations may be resorted to within the scope of'the invention, and portions of the imfirovements may be usedwithout others.

aving thus described my invention, I

claim:

1. The'combination with a platen, of a card-carrying frame arranged to bring a card in close juxtapositionto said. platen,

line-spacing mechanism for said platen, a B0 spring drive for said frame, and an escapement mechanism for said frame under the control of said line-space mechanism, en-

abling said frame to keep ace with the line space movements of em platen, so. as to bring a;

40"will return the lineframe cooperating-with said power-drive for said frame, a

ttggiosition fresh lines of said card to be I'll] on. Y

2. e combination with a platen, of a card-carrying frame .coiiperating with said platen to support a card against said platen, a power-drive for said frame, and an escapemen't mechanism controlling the movement of said frame by said power-drive, so as to give step-by-step line-space movements to' said frame and the card carried thereby.

3. The combination with a platen, of a carrying frame for holding a card in juxta-- position tosaid platen, a pair of racks, one on each side of said frame, a pair of'gears meshing with said racks, so as to give a j ustified movement of said frame, and a spring for driving'said ears to give an advancing movement of saicf frame, so as to bringsuccessive portions of said card into contingency wlth the platen.

4. The combination with a platen, of a carryingframe for supporting a card in contact wit said platen, a pair of racks, one on each side of said frame, a pair of gears driv-' tact with said platen, a pair of racks, one on each side of said frame, a pair of gears driving said racks, secondary gears driving said first-mentioned gears, a spring for driving said secondary gears, so as to give a justified advancing movement of said carryin frame to bring suecesslve-portions. of sai card into cont ngency with said platen, anda self-locking worm and worm-wheel gearing for giving an initial tension to said spring a 6. he combination with a platen, of a frame for holding-a, card in contact with said platen at the line of; writing, a doubledrive gearing "for advancing said frame equally on both sides,

a spring for actuating said gearing,

andiame scapement mechanism for controlling" the movement of said frame step by 8&3), so'as to bring successive lines of the car into contact with the platen.

7. The combination with a platen, of a platen to sup said platen, a ratchet on said frame,'a pair of dogs to alternately engage port a card in contact with said ratchet,- and a line-space mechanism for V mani li ulating said dogs.

8. he combination with a platen, of a carrying frame for holding a gear in contact with said line-space mec anism' for said p aten, a

laten at the lineof rinting,

carrying V with said platen at the ratchet on said carrying frame, a springdrive for said carrying frame. and an eseapement lever operated hy mechanism and having a pair of dogs to he brought alternately in engagement with said ratchet to Control a step-by-step advancing movement of said frame.

' 9. The combination with a platen, of a frame for holding a *ard in contact line of printin a pair of racks on the front of said frame.

gears meshing with said rat-ks, a shaft on thehaek of said frame. gears on said shaft connected to drivesaid first-mentioned gears, and a spring for driving said gears and said shaft to advance said carrying frame.

said line-space thereby, and

10. The combination with a platen. of a carrying frame for holding a card in eoutart with said platen at the line of printing, .i spring for furnishing power. means for advaneingsaiil frame and the card carried an eseapement mechanism eontrolling line-lry-liiie feeding movements of said,card carrying frame, and permitting a quick priming imivement equal to the sum of the line-space movements to retensi on said spring and plaee a new card in proper position for the initial line of writing.

JESSE A. 1%. SMITH.

\Yitnesses:

(a'ru am 3 r. A. NEWELL. lin'rru l). Lu-.nm'.