US1146148A - Type-writing machine. - Google Patents

Description

H. A. FOOTHORAP. TYFE WRITING MACHINE. APPLICATION man Auc.23. 1910.

Patented July 13, 1915.

5 SHEETSSHEET L H. A. FOOTHORAP.

7 TYPE WRITING MACHINE.

7 APPLICATION FILED AUG-23. 1910.

Patented July 13, 1915.

5 SH.EETSSHEET 2.

H. A. FO-OTHORAP.

TYPE WRITING MACHINE.

APPUCATION FILED AUG.23, I910.

Patented July 13,- 1915.

5 SHEETS-SHE ET-3- v I I. 1 w I n I m; I k w I I 1 v lll'llll M+. H.=.Q.H J. N 1 r is; LI

H. A. F OO THORAP. TYPE WRITING MACHINE. APPLICATION FILED AUG-2.311910.

Patented July 13, 1915.

5 SHEETS-SHEET 4.

WITNESSES H. A. FOOTHORAP.

TYPE WRITING MACHINE.

APPLICATION HLED.AUG.23|'I9I0.

Patented July is, 1915.

5 SHEET$SHEET 5.

% NNQW.

IN VENTOR, fiafiwm M i. nann A. soornonnr, or HARRISBURG, PENNSYLVANIA. assrsnon To ELLIQn-n.

nsnnrssune, rnNnsYLvAnm. A conronnrron. i n

FISHER CQMPA'NY, 0F DELAVJABE.

. TYPE-WRITING ivmcnmn.

icense.

To all who m it may concern:

Be it known that I, HARRY AIFoornonnr,

a citizen of the United States of America, residing at Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is-a specification.

My present invention relates to type;- writer and is moire particularly directed to the improvement of that class of typewriters in which the printing is effected by means of key-operated printing wheel.

The object of the invention is to provide simple, durable and efiicientmotion transinitting mechanism between the keys and the printing wheel. the primary element of such intermediate mechanism being held and guided. in {a manner to render accurate and certain the motion transmitted to the Wheel and to'present a minimum of friction and Specificetion of Letters ratent.

Harrisburg, in the county of- 1 parts.

consequentresistance to the operation of the keys.

Another object is to provide means where by the elements of the motion transmitting mechanism may be relatively adjustable in diili'erent directions in order to facilitate the accurate setting of the mechanism .7301 the accurate spacing of the pr nted characters.

and otl s subordinate thcret the invention resides in the novel construction and ar- To the accomplishment of the recited ends In said dreivingsl igure 1 is a plan View of a typewriting machine constructed in accordance Wi h my invention. similar view ith the top plate and the parts carried thereby removed and a por- Fig. 2 is a tion of the frame shown in section. Fig. 3

2. vi nr to Fig. 2 with parts broken :iwe showing the positions'assumcd by view on a somewhat efiilnrged scale. the line if Mounted on a base Application filed A uses; 1910. Serial No. 578.492. p r 1 the rock shaft, dogs, camv plate and revers- 65 ing handle of the ribbon feeding '-mechanisni. Fig. 9 is 'a detail sectional view through one of the ribbon spools audits support; Fig. 10 isa section on the .line l010 Fig. 9. Fig. ll is a section on the line 11-41 of Fig. 9. Fig. 12 is a detail perspective view of a ribbon spool. Fig. 13 is a longitudinal sectional view through the machine. Fig. 14 is a perspective view of one'of the key-operated slides and adjacent 7,

Fig. 15 is a detail view of the connection between the slide and connecting rod shown in Fig. I l. Fig. 16 is a detail perspective view of one of the keys. Fig. 17 i s'an'inver'ted plan vieigthereot' \viththe end of the key lever showiri in section. Fig. 18 is a detail perspective View of the key top and the label .t'reme shown separated but in juxtaposition. F ig. 19 is asection on the the line 20--20'of Fig. 17 and Fig. 21'is a deta-il view of the end of a key lever before the key is attached. y I Each part, Wherever shown, is designated by its appropriate reference character.

I )late 11 is a frame A which isof rectangular form. as shown in Fig. 2, and includes front and back bars 2 and 3, end bars 4: and '5 and a central transverse bar or frame member 6. The frame bar 6 is provided with guides 7 which accommodate a wheel slide or'carrier 8 confined in the guides by front and rear plates 9 and 10.

Upstanding from the carrier 8 isawheel 9 spindle llupon which revolves-a wheel pinion 12'having'vertically disposed guide pins .13 which extend into suitable openings in the typewheel 1i mounted to rotate on the spindlell with the pinion 12 and movable verticallyto present the desired row of type 'fnces imposition for printing in a manneroi section of the upper portion being at the center of the machine and the line or section well understood in theart. The means for raising the printing wheel 1% to the properheight to present the row oi type faces to the printing point forms no part of theyvpresent invention, but as shown, it consists .cf a'rock shaft suitably mounted on the frame A and having an'arni 16 at one end which'engages the printing wheel and having an arm 17 at its opposite end which is operated by either of two keys 18.

As the typecharacters I are distributed around the periphery ofthe wheel 14: in in rows, it. is necessary to rotate the wheel in one direction or the other to bring the desired type opposite the printing point. To accomplish this rotary =I IIQVQmQDi of the Wheel a "ibrator 1-9-is pivoted at 20 on the Wheel carrier 8 and includes a toothed segment 21 in mesh with the pinion 12 and normally occupying .the central position indi-' cated in Fig. 2. The vibrator 19 also in cludes arms 22 extended in opposite directions from its axis of movement and pivotally connected respectively links 23 with swinging arms 24: mounted at the oppositeends of theframe. The arms 22 are adapted to coact with cam faces 25 formed at the rear edge of the plate 9. Each of the links 23 is connected by means of a connecting rod 26 with a key-operated slide 27.

Each of the slides 27 is movable between a' pair of guides 28 between which and the opposite sides of theshde are interposed anti-friction members as for instance balls 29 accommodated in race ways 30 and 31 formed inlthe contiguous faces of the guides *justing the guides transversely an accurate and slide respectively.- The balls'are separated by separating pins 29 carried by the slide. The guides-28 are adjustably secured to the base plate 1 as by screws 32 passed upwardly through slots in the plate 1 and into suitably threaded openings in the guides. By reason of this provision for ada1 0 desirable to arran e the )ivotal connection 26 of the rod 26f0r adjustment along the link 23, the latter being preferably provided with a. plurality of'apertures 26 for this purpose. It will now be seen that either. slide 27 if urged toward the rear of the machine will cause the vibrator 15) to be swung and the printing wheel .14 to be rotated. This rotary movement of the wheel is designed to bring the desired type character at the printing point and as the type carriers are variouslyplacedabout the periphery of the wheel, a variable stop mechanism determines the degree of rotation. The primary elementiofthis stop mechanism is a stop rack 34. meshing with the sufficiently to permit its engagement with.

board associated withthe lovers of a g1 .a meters.

and entering one of the guideways ii p pinion l2 and, mountedto move longitudinally in a guide As the slide 2? moves back the rotation. of the pinion 12 will cause the stop rac to move toward the operated slide. slides 27 are operated by the depresf from the top plate 39 of the frame. it be noted in passing that the top plate supported by elevated portions 5r ofthe frame members 5 and is detachably retained in place by screws 5".

The key levers 237 are provided with angular rear ends which constitute stop inenibers id which act as wheel locating stops coaeting with the stop rack 34, the stop member of every third key lever being i the'adjacent slide LT. lVhile this arrange ment of the key levers 1S not novel, it i be noted that each side section of the l Lil are divided into subsections of three keys each. The outside lever of each subsectioin see Fig. 1, is the one whose stop merr 1s extended downwardly to engage the s 2i and whose outer end is connected to the extreme front key of the subsection. The intermediate key 'ofthe subsection is con: p g 1 I 7' nected to tlye intermediate lever and over I 7 laps the oil er lever while the rearmost KEY 1s carried by the third leve' and overlaps the other two. Thus the slide operating lever will be operated by the depression of EGG any one of the several keys of the subgrou fi, but the movement of the stop rack 31% will be governed by the particular key depressed because said key will position a stop in the path of the rack.

For the purpose of properly guiding the slide operating portions of the key levers and to afford a backing for the side thrust imposed upon the stop members when the vmovement of the rack 3% is arrested, each 233 slide formed with parallel e'uideways ll having flared entrances l2 and accommodating contact rollers 4-3 of graduated di- That is to say, the diamete of each contact roller of the Stl'lt-isjiliOililtMl in the slide is somewhat greater than an adjacent roller. the smallest roller being the inner end and-the largest at the outer end of the series. Upon the operation of a the stop arm thereof swings rearwar gages a Contact roller 43 and rotates the jacent slide 27 rear\\'arr;l This thro the intermediate connections cause the brator 19 to swing a for instance position shown in .iii 2 that sin".- Fig. 3, and before th tion of the key lever h-- rack 34:, the latter ineml'ier shown Fig.

thee

I the rotary 1H1OV81116I1 of the type Wheel. Continued depression of the key and rearward movement of the slide will there fore cause rearward movement of the Wheel carrier 8.. to move the Wheel hack to the platen 44- eround which the paper is carried in a manner Well understood in the art. may be noted, however, that the carrier 8 is started rearwardly before the stop rack 3% comes into contact with one of the stop-memhers 40, or in other words, during the rotation or" the type wheel, this movement of the carrier being due to the coection between the arms of the vibrator l9 and the ad jacent cam face 25 of the plate 9. The position of the parts the moment of printingis clearly indicated in Fig. Vhen the key is released the Wheel carrier 8 and the parts connected thereto-ere restored to normal position by priinsry re tracting spring 45 located in a. slot in the central frame member 6 and secured its front end to said member, indicated at 46, and at its rear end to e pin it? depending from the Wheel carrier 8, see 3 key levers and keys are returned to normal position'by retracting springs -18, the retrectile movement of the levers being limit ed bystop meinbers The ribbon mechanism constituteslan irre poi-tent feature of the present invention, the primary object being, already stated, to effect a step-by-step advance of the ribbon in either direction "Without imposing the burden of the ribbon feed upon the keys. Depending from the to ple. 5 scent to the opposite ends thereof are a pair of spool spindles 50, see 1 of which rotate which the oppos t reversely Won bon which is v:

. '3, i-pon the lower ends women 5 s ools 51 upon at *tion of the ribnpon the respective pool casing 53 having the fonts mg one or more c i slits 5% in its side wall tor the pesstigv oi tli as l e riboon and so y a thumb screw lower end of the spin die and supporting the casing. The casing is held against rotation in any suitable Way its for instance by flattening one side of the lower extremity oi the spindle 50 end correspondingly :t'oi nlng the opening in the bottom of the raising, indicated at 56 in Fig. 11.

Rot-stable upon the teed sp le above the r bbon spool is a hub or sleeve 57 retained against longitudinal movement onthe sleeve by a ring he 58 f.

cured to the spindle :i i 55 screwed into the to its lower end it ratchet erov l or horizonpretera-bl to form an i rat het wheel 5%} tally disposed in the form of :1 metal bent annular rib 60 upon the ii -per l ratchet'teeth 31 are produced.

' The member 59 affords e co ribbon 52 are in ent of the shaft 67 jinn 7G is extended troin the middle of the ll'l'ifll P f rock shaft 67 through an opening 71in having secured suffice, it is preferable to form each end ot the spool with eplurehty of notches in order to facilitate assembling, since this construction renders it immaterial -which. end of the spool is uppermost and enables thelng to drop into one of the notches 63 by slight rotary movement of the spool. I That portion of the ribb n, 52 extending between the spools is preferably guided at,

opposite sides of the printing point by ribbon strides 6% preferably in the i1 Wire loops suspended from the inner sides 01 the key lever brackets 88, see Figs 5, 'Z, and 13,

The means for rotating the ribbon spools comprises in addition to the spool ratchet/s 59, pair of ribbon feeding pewls 65 cerried by tcrininal arms 66 off a rock shaft 67 accommodated in a groove 68 in the under side of the top plate 39 and reteiined by the securing pistes the brackets 38, see Y. The arms 68 of the. rock. shaft 6? are so spaced that when one of the pswls 65 in engagement with one or" the spool retchets 59 the cther'peivl 65 will be out of engagement with the other ratchet, e 1011- gitudinel movement of the rock shefhffi? being necessary to eiiect a reversal of the feed. by disengaging engaged litWl. its ratchet and by Q1 the disengaged pevl. To effect .tl s longitu nal movee hen-die or reversing top plate, Thus when the operator deer a to reverse the feed of itis simply necessary to move the pr' geoting portion of thereversing pin 1 0 to the opposite end of the slot or opening 71.

It will he noted that the rocking of the shaft 67 will oscil ate the '66 and thus reciprocate the pit is 65, so that the --en' pawl will co t with its ratchet tore tzitethe latter and} thus rotate one of the ribbon spools. The necessary rocking of the sheftt 'l' to accomplish this result is effected by the spindle 11 of the printing wheel. The spindle 11 is edoptedto coact with a cam. plate Y2 extended reeiwmrdiy from the middle portion of the rock shaft 67, as shown ii and 'Z The lines in 3 by 1 r tracting spring.

j; intense 73 backed by thetop pi and bearing plate 76. when the table 8 is thrown back upon the upper side of the cam plate 72. to the posit-Ion shown 1 n 1g. 0 its move In this depressed position of the plate 72 ment is hunted by a prO ect-mn 87, as shop 11 the pawls are held retracted, but when ll hen the typewriter is not muse how eyei, the wheel carrier 8 is retracted by the the table 85 1s swung to a position overihe spring -15 after. the printing'of a character platen. 88 nd cates a bail-shaped swingthe upper end of the spindle 11, as 1t moves 111g scale bar pivoted to the end members backwith said carrier, will enga e the 'un- 77 of the platen and ret d b 1 b der hide of the cam plate T2 thus elevating springs 89. 99 indicates a locating bracket the latter and rocking the shaft 67 to ador frame havmg plns wh ch engage and ivance the pawls 65 from the dotted position hold the printing .wheel during the printing in Fig. 6 to theposition indic ed in l operation in a manner understood in the art. lines. Thus the burden of operating the The step-by-step advance or feed ot the ribbon feeding mechanism is imposed on the rri g i ff t d by a feed dog 91'm0untretracting Spring :5- d cll e lc key ed onfthe wheel carrier S and arranged to go is depressed and the spool carrier 8 moves gag and advance the feed rack 7 8 in an rw y to P the Wheel Spindle 11 obvious manner. The machine is also rides o t from under t cam plate 72 equipped with the usual marginstop devices y 37 abutting the under side of the depression 2 and a.

plate 76 at the upper edge thereof and is is formed of resilient sheetmecal. The

Which P hack the dotted Position and and bell mechanism, the construction of both retracts; the lihhim feeding P i j of which is well understood in the art and 5 repetition of the described operation. it d t b d ib d. y he hhted'ih P g that the Plate it remains only to describe in detail the 72 is Of Suhh Width, 598 g thiit novel construction of the finger keys. As engagement {3mm h Spindle 11 will not be shown in Figs. 16 to 20 inclusive, each finhfiechhd y Such lhhl'emehh of thh'shhfh gel: key comprises what is known as the key so and Plate 72 as ii hhchssiuy t0 @fihch a top 92, the character plate 93 and the plate Of the Tibbh fhech frame 94. The key top 92 is a horizontally Secured to the rear member?) of the ma n i d t l hit h i i l I frame i by a base flange h W pression or sink in the bottom of which is 75 a'ghlhsh the from face 0i Whlch Slides a comparatively long and narrow sub-sink 95 t k Plate 9 a Plahgn cmjl'iage Whlch! or depression 96 disposed diametrically of m addlhlon to the. plate r l i the depression 95 and transversely of the members 77 and a feed rack T 8 which like key level. 7 At the upper end Ofthe key the back -h 76 E n between the d lever 37 is formed a tongue 97 which extends m but is located m a h s PO51 through an opening 98 formed by cutting 100 i at lower Dion: 0if away the central portion of the sub-sink 96 g?" i For th suppinh f h rack In assembling the parts the key top 92 is m i t h l' with upstanding placed with the upper end of the key lever supporting. or. bearing lugs 79, see Figs.

95 "so that the key top rests upon the lever -with the walls of the sub-sink dropped down upon the opposite sides of the lever and forming shoulders 99 which abut against the opposite sides of the lever, as shown in Figs. 17 and 20, to resist lateral displacement or rocking of the key top on its support. In. order to rigidly secure the key top, that portion of the metal key lever which extends into the key top, to-wit the tongue 97, and perhaps a portion of the adjacent metal is punched down or riveted. The character plate 93 is merely a flat plate of any suitable material placed upon and con- To facilitate the guiding of the paper around the platen, a paper guiding and clamping plate 80 is secured to the back carried under the platen and around to the front side thereof wnere its front edge-is scalloped to form holding or clamping tingers 81, it being understood that the plate upper edge of this. plate or guide 80 is bent over to form at the upper edge of the back plate 76 a hanger or guideway '82 which fits over the flanged upper edge of the back allrelative to which it moves with the carf i t th t f th key t 9'); g I and held in place by the plate frame 91 To facilitate the feeding of the paper t O The frame 9st extends continuously around feed rolls 83 extended through openings in the edges of the key top andcharacter plate e paper guide 80 and bearing against the and is formed with a face flange 100 which platen are-mounted on a rod carried by overlies the margin of the p character plate the back plate Z6. The advanced end of the 93. The frame 9i also formed with de paper as it passes rearwardly from the up-' pending tabs 101 which are bent under the members 5"? of the per side of the platen is sustained by a foldkey top shown in Figs. 17 and 20, to reing paper table 8 o pivotally mounted on a l frame 94 and'tccause the latter to long pintle 86 ariorded hearings rrth er clamp the character piate and key above the 2* It is thought that from the foregoing, the

' construction, operation and advantages of the several described features of the invention will be fully understood, but I wish'to distinctly reserve the right to modify the novel features within the scope of the appended claims and to employ said features in other than the specified relation.

What I claim is 1. In a typewriter, the combination with a platen and type wheel, of wheel operating means including a slide having a graduated series of contact rolls and a'series of key levers for operating said slide and coacting with the contact rolls thereof. 2. In a typewriting machine, the combination with a platen and type wheel, of wheel operating means including a series of key levers and a wheel operating slide operated by said levers, said slide having a series of lever guides and a graduated series of con-.

tact rollers each arranged to be engaged by a key lever.

3. In a typewriter, the combination with a platen and type wheel, of wheel. operating mechanism including a series of key levers, a slide operated by said levers and provided with a series of parallel lever guideways and a series of contact rollers mounted in said guideways.

4. In a typewriter, the combination with aplaten and type wheel, of wheeloperating mechanism including-a series of key levers,

a slide-coacting with said key levers and having a seriesof parallel guideways for the levers and a contact roller mounted in each guideway, the several contact rollers of'the series being graduated as to size and mounted on a CO IIImOHaXI'S.

- a type wheel and platen, of wheel operating 5. In a typewriter, the combination with means including a slide, and a series of op- .erating levers therefor, adjustable guides for the slide, and anti-friction bearing elements interposed between the slide and guides.

6. In a typewriter, the combination with a type wheel and platen, of wheel operating Witness:

means including a slide having a series of lever guideways and graduated contact r'oll-- ers mounted in said guideways, a series of key levers coacting with the contact rollers of the slide, and means facilitating the adgitudinally.

7. In a typewriter,-the combination with justment of the slideboth' laterally and lona platen and type wheel, of wheeloperating I mechanism comprising a-pair of reciproca-r tory slides each having a graduated series of contact elements, and .a series of key levers associated with each slide, certain of said levers being arranged to coact with the graduated contact elements and movable to shift the slide.

ated contactelements thereof, and a rack geared to the pinion and disposed to engage the key levers. "9. The combination with a platen and printing wheel, of means for operating the wheel to print, said means including a pair of parallel reciprocatory slides arranged at opposite sides of the wheel and each having a graduated series of contact surfaces, a pinion arranged to revolve with the type-wheel,

an oscillatory vibrator, and a rack geared to said pinion, operating 'connections between the slides and the vibrator, and a series of key levers for operating each slide, said key levers being arranged to, engage the graduated contact surfaces of said slides and to be engaged by the rack to limit the rotative movement of the type-wheel.

In testimony whereof I affix my signature in presence of a witness.

HARRY A. FOOTHQRAP.

W. J. Evnnr.

G'opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. G.

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