US1242173A - Type-writing machine. - Google Patents

Description

G. G. GOING.

TYPE WRITING MACHINE.

APPLICATION FILED MAR. 31. ms.

Patented Oct. 9, 1917.

2 SHEETS SHEET I.

. U TED sTA S- T :QF I R enonsn qoULneome, or MrnnLnTown, ooivnnorxour, AssIenon' TO THE lv orsiannss Q i- ,,;'IYl=EWBI-TER, COMPANY, or MIDDLETOWN, CONNECTICUT, A CORPORATION on oonN q'rIcUT.

Be itfknown that .I,=GEORGE GOULD GOING,

a citizen: ofthe .United States, residing at .ALlClCllEIOW-HJH the, county of Middlesex and State fiCOIlHCt1Cl1t, l1t1V6 invented certain -:as -will enable, others skilled in the art to which' 'it,-appertainsi-to malre and use the same. 3. w

"T his invention relates to typewriting ma-, chines, and more=-particularly to structural improvementsindevices for carrying the inking;ribbonahdjfor insuring its automatic reversal of Winding movement;

;-One of theobjects of the invention is the provision of. simple and reliable mechanism for insuring and effecting the rewinding of the typewriter ribbon, on a spool from which it has been unwound.

A further object is to provide a practical and durable device for guiding and controlling the ribbon intermediate the type carriers and printing point.

.Other' objects and advantages will be in part obvious andin ,part noted hereinafter in connection with an embodiment of the invention illustrateclin the accompanying drawings. 1

The invention accordingly consists in the features of construction, combinations of elements ,and arrangement of parts which will be exemplified in the construction hereinafterset forth, and the scope of the application of.. u'hich"will be" indicated in the 1 writer,-

following claims. Inthe drawings, I

Figure '1 is a perspective and sectional view of ribbon guiding, Winding and reversi'ng mechanism;

Fig-2 is a partia' l plan vlew thereof; Fig. 3 is anenlarged sectional view on the 1iiie:X,X of Fig. 2; and

' Figwb is a detail perspective view of, the ribbon cal-e; i lThe inveiition isrepresented in the draworp. t' d. nf? x ise s -t peiefrein' [the traveling .'carr1age is arranged in't lie rear, pram machine and the type carriers are located radially in advance of the platen and mounted for reclprocatlon toef'fect printing. Ribbon spools are mounted at oppof'site' sides of the-machine frame to wind 't11e'in1;ing ribbon from one to' the TYPE-WRITING MACHINE.

Specification of Letters Patent.

- Application filed March 31,

1916. Serial No. 87,912

' Patented 0on9,

" -'other throughfaa supporting guid I,

vance of the platen. It is to be understood, f f however, that the features of the invention are susceptible, of application as Well;to -;va.-

rious other styles of machine.

Referring more particularly-to the drawings, there as represented a -machine frame having side walls 1 and supporting at the,

rear part a paper roll 2 and ,fiat metal platen. e

3 mounted for longitudinal letter, space ;movement and vertical case shifting movement on a guide rail 4. A ribbon cup'fi is; arranged'on the .machine top plate 6 adja cent each side wall in advance othe1car riage. \Vithin each ribbon'cup isla nbbon supporting disk 7 havingahollowihub d to I frictionally fit over the split end 9 of a hol;

low spindle 10.extending"vertically adjacent the machine side walla" A ribbon 11 is} provlded for, winding and unwinding from one ribbon cup to the other, and is supported and guided medially in S c movement by guides mounted von a holder 1'2seciired,

through the medium of a bracket 13, to the carriage rail 4. These guides are arranged in spaced pairs at the sides of the printing point, and each pair comprises a fixed guide" 14 at the upper end of a in 15 and a piv oted guide 16 on an o seta'rm"'17'of' a bracket having a lower arm 18i'with down-1- turned end 19. The pin 15 passes throughthe arms 17 and 18, so that theiguide 16' is pivotally mounted, and it is normallyur ed to swing away from the platen by F a e- -H spring 20 coiled about the pin'15and hav ing its ends bearing against a fixed part and' fithe guide.

Tensioned movement of the guide 16 is limited by engagementof ther i ofl'set 19 on its lower arm with an extension a of the supporting bracket12. I The 'gu ides.

16, underthe influence of'the springs 20, serve to take upthe slack of the ribbonrand hold the same taut away from the printing} line in order to render the latterevisibla -At-1 the same time-when the type carriers are ac tuatedto press against the ribbon, theguides 1;: yield without appreciable resistance to carry the ribbon against the papers. The endsiof theribbon are securedv t0 tylindricahcores I 21 designed for ready attachment.- .over. -the}.

hubs 8of'the'ribbon disksgil.

..The hollow shafts 10 .are

alternative clutching with a transversely ex tendingxdriving shaft- 22 geared to; aid

"ing shaft 23 of the drum its movement.

propels the carriage in its letter spacing The connection is such that,

-'during operation, the ribbon is automati- 'cally moved to wind on one spool from the other, thereby utilizing the surface un1- formly.

Automatic means is provided to insurea.

reversalin the direction of movement of the ribbon when unwound from either spOoL' For. this purpose each ribbon shaft 10 carries, at its lower end, a stamped gear positioned for mesh with a gear '26 keyed to the driving shaft 22. The latter is mount- ;ed for limited longitudinal movement to alternatively mesh wlth either gear 25 and free the opposite gear, it being'understood that/only one set of gears can bein mesh at any time, and that when so engaged the corresponding ribbon spool is rotated as the carriage travels in letter spacing direction.

' A cone cam 27 fixed medially to the transverse driving shaft 22 is engaged on its two sides by the V-shaped ends of leaf springs 28 attached to a cross brace 29 of the ma chine frame so'thatthe shaft is normally is coiled about the hub S, it raises the lever,

to said shaft.

and accordingly elevates the pin 30 to withdraw the lower end of-the latter out of engagement with the shaft 22 therebelow. Similarly, when the ribbon is unwound the lever 31 drops, thereby allowing the pin 30 to" lower and carry its end against the shaft 2:2 and into engagement with a cam 33 keyed As rotation of the shaft thereafter continues, saidcam rides over the end of the pin and accordingly forces the shaft-"longitudinally to clutch together the gears 26 and 25 of the respective ribbon spools. Simultaneously the correspond1ng gears of the other ribbon spool are disengaged. As the ribbon thereafter moves in a reverse spool, the lever 31 is again raised to carry the pin 30 out of engagement with the driving shaft 22; the latter,' however, being maintained'in its longitudinal position by v the pressure of the leaf springs 28.

The shaft 22 is slidably keyed or splined to a gear 3% held in bracket 35 and meshing With a bevel gear 36 at the end of the drum driving shaft A ratchet clutch is provided in the drum shaft as shown in Fig. 4, comprising an interior ratchet 37 on the driving shaft and a coil spring 38 011 the gearshaft having its outer end pressed against the ratchet teeth, so that only movement of the driving shaft during letterspacing rotates the gear 36.

through the machine side wall and carrying,

spools.

direction to coil about the empty The transverse shaft extended through one side wall of the machine frame and is provided with a handle lever 39 by which it may be moved longitudinally to clutch with either ribbon spool'for'manua'l rotation. The shaft 22 also has keyed thereon circular V-cams l0, between, which normally rests an arm t1 of a bracket t2 fixed for rotation on a short shaft l3 extending adjacent the handle 39, a metal plate 44:- with a 'recess through which the shaft-2:2 extends. By manual rotation of the plate 44:

the bracket arm t1 may be carried -to engage. the side of either cam 40 to center the shaft '22 and disengage both sets of ribbon spool gears. In this manner the ribbon driving mechanism may be disengaged for ste'ncilmg or'otherfpurposes.

It is to be noted that the worm .or peaked cams 33 keyed to the driving shaft 22 are positioned in relatively opposite directions; that is, the hill of one cam is longitudinally in line with the valley of the other cam. By this arrz ngement injury isprevented in case the two pins 30 should simultaneously be in lower position. as when the ribbon is re-' moved, in which case the shaft would merely be vibrated longitudinally, when turned.

The circularcore 21 is designed to be supplied with the ribbons. thereby affording an easy means for mounting the latter on the Each core is provided with an inturned 'groove l5 which fits in an opening in 100 the ribbon disk hub S.- whereby these parts are keyed together. and at the same time the groove l5 affords free movement of the lever 31 when elevated as the 1.l)l)O11 ISWOUIlCl.

As many changes could be made in the aboveconstruction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof. it is intended that all mat:

ter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

Having described my invention, wvliat- I claim as new and desire to secure'by Let ers Patent is:

1. In a typewriting machine. in combinatioini'ibbon spools. ribbon shafts therefor, a longitudinally movable driving shaftadapted for selective connection with said ribbon 1 0 shafts, and means comprising peaked cams on said driving shaft and ribbon controlled means to engage therewith for effecting longitudinal. movement of said driving shaft, said cams being keyed to said shaft with their peaks on r, 'tively opposite sides thereof. d

2. In a typewrit ng machine, in combina tion, a ribbon cup having a slotted hub, ribbon reversing means, including a lever arm adjacent said hub and adapted for con encircle said hub and having an integralintrol by the ribbon, and a ribbon core to endented portion to. fit within the'slot of the jcircle said hub andhaving a portion to fit latter and to'receive said lever arm when the slot of the latter and to receive said actuated by the ribbon.

5 lever arm. -In testimony whereof I afiix my signature, 1; 3. In a typewriting machine, in combinain the presence of two witnesses. tion, a ribbon 'cup'having a slotted hub, v GEORGE GOULD GOING.

' ribbon reversing --means including a lever Witnesses:

arm adjacent said hub and adapted for con- D. B; WEsTIN,

10 trol by the ribbon, and a ribbon core to ERENA K. ALLEN.

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