US997562A - Type-writer. - Google Patents

Description

w, P, Kimm:

TlE WRITER,

AFPLIOATION FILED FEB: 15. 1906.

Pasemted July il, 191.1;

VFELLINGTON I-ARKEB KIDDR, OIF BOSTON, MASSACHUSETTS.

TYPE-WRITER.

Specification of Letters Patent. Original application filed February 1, 1904, Serial No. 191,602;

Patented July 11, 1911. Divided 'and this application filed February 15, 1906. Serial No. 301,278.

To all whom may concern.'

Be it known that I, WELLINGTON PARKER K inunn, of thecity of Boston, State of Massachusetts, United States of America, have invented certain new and useful Improvements in ".lype-Vifriters; and I d o hereby declare that the following is a. full, clear, and

exact description of the same.

This invention has forits objectto provide an automatic ribbon reverse which will be caused, while being automaticallybrought into action, to perform its function by a manual act-ion thereby reducing the resistance to this portion of the mechanism to a minimum;

The invention may be said brietly to consist of a movable device intersecting theline between the supporting surfaces of the ribbon drums and adapted to be moved by the ribbon when it becomes taut, or begins to tighten, and means co-acting with said device and obstructing a movable part the movement whereof is due tothe stroke upon the keys, and an operative connection between such last. mentioned part and the ribbon reversing mechanism whereby the first stroke upon the key will, through the medium of such part, reverse the ribbon shifter.

For full comprehension, however,I of my invention reference must be had to the accompanying drawings forming a part of this speci-ication'in which similar reference characters indicate the same parts and wherein- Figure. l is a plan view of a portion of a typewriter provided with rnyimprovements; Fig. 2 is a longitudinal vertical sectional view thereof taken on line A. A. Fig. l; Fig. 3 is a detail longitudinal sectional view taken through the center of-'the machine and illustrating' particularly the pivotal connection ot' the levers of the ribbon reverse to the 4frame.

The improved automatic ribbon feed and reverse consists of a pair of bell-crank levers each having one arm Z) shorter than the other the latter being curved to clear the ribbon drums (Z (of usual construction) and preferably having a depending antifriction roller c at what may be designated, its bearing end. These bell-crank-levers are ilulcruined at their angles as at f, to the frame r/ of the machine in a manner and in positions to enable their bearingends to be swung into intersection of the path of the ribbon, indicated at l1; while the ends of the short arms are connected by links 2' p ivoted at a. common point to a piu upon a lever arm Z. One end of this lever arm has an arbor m rigidly secured thereto and project-- ing into a guiding sleeve n rigidly mountedin a perforation in one of the cross bars 0 of au open quadranta-l ribbon-.feed frame y? secured rigidly at'its end to the frame of the machine. This sleeve supports the lever arm through the medium Vof a duplex rctaining pawl to be presently described, and a rigid collar y upon the upper end of the arbor adjacent to such level' arm, both the sleeve and collar acting as distance pieces to accommodate certain members of the improved ribbon gear. The opposite end of the lever arm Z has a headed stud 1' upon its underside, the neck of which is straddled by the forked 'end s of a longitudinally reciprocating and transversely oseillative slide bar t having a, preferably, rectangular loop u between its ends and adapted to be tittcd over the arbor im and lie upon the duplex paw] and beneath the lever arm; while the. other end of this slide bar is pivoted to the upper end of a vertical lever o the lower end whereof receives movement from the universal-bar rocker shaft w as usual through an arm a.' upon and oscillating with the latter and a link v/ pivotally connected at its ends to the upper end ot such arm and the lower end of the vertical lever.

` The longitudinal sides of the loop 'u have depending rigiddogs 2, to in their reciprocatiou with the bar move back and forth at opposite sides of the arbor. Upon the guiding sleeve 1L is pivoted an arm 3 the hub whereof has a pair of rigid dogs'lprojectingr radially from diametrically opposite sides thereof, and its end has a stud '1"'. One end of a retractile volutoid spring is connected to the lower end of such stud, the other end thereof being connected, as at (i, to the crotch of a duplex actuating paw] to be presently described, while the upper end of the studengages a du lex retaining paul to be presently describe This spring has two bearing points one being u on the end of the arm 3 and the other `a tt e crotch of the duplexl actuatingpawl and Ithis form of spring is preferable because lowing to its spam-it will yieldingly retain, the arm 3 vat either sideof its pivot point to which it may be moved and in conjunction with this arm, retain the actuating and retaining pawls in' operative relation with either ribbon drum.- The duplex' actuating p'awl before 4mentioned is in the form of a Y having the end of its leg 7 notched'and` pivotally connected as at 8 to the vertical lever va short distance below the top thereof, while .its fur? cated end 9 is 'oa width to almost but vnot quite engage the ratchet toothed disks 10 of the ribbon drums, and it terminates in pawls 12. either of which is adapted toen-v '4 gage the toothed disk ,at its side' u on being swung into engagement therewit The.' duplex retaining -p'awl is in the form of an arc13 having its ends 14 widened and inthe form of pawls, the total lengthbeing substantially equal to the' Width of the furcated end of the duplex' actuating nawl.

'The function of this duplex retainingl pawl is to prevent draggingof theratchet toothed disks'with the duplex actuating `pawl during the latters returninovement andzit is shown in plan in Fig. 1 andin transverse sectional view inFig. Tlaese duplex pawls'are retained in o erative relation with the 'ratchet toothed dis cs by a pair ofbars 15 extending over thends of such pawls and each connected at one end as at 16 tothe usual' quad-i rantal bar 17 which receives the impact lof the return movement of thetype bars, andat ther other ends to a pair of standards 18 carried rigidly by the ribbon feed frame p, each of these bars 15 having an arm 19 extending laterally therefrom over ,such pawls.

'lhe operation of the improved ribbon feed and automatic reverse is as follows: l'lach or-tcillation of the universal barcauses the .slid/c har t to reciprocate and theduplex actuating pawl to intermittently rotate the ribbon drum with which it happens to be in operative relation.4 When the ribbon is almost completely wound upon this drum,

and commences to tighten, it will bear upon the hearing end of and-move the bell cranklever adjacent to the other drum, thereby drawing toward it (through the'inedinm of its connecting link the lever larinjl which, through itsstud 7', swings the lforked end of the slide bar t with it, and brings the dogV on' the opposite-side of bar' t into line with the rigid 'dog-jl adjacent thereto and upon :u'm 3.- When the next stroke is given, rdc-1hanupou the-space bar orlany one-of the keys, and the har t is, Ain sequence, reciprocidad, the-said dog 2; will impinge upon the dog 4 and swing such v:tz-m 3, against the ieldin'r resislanf.,` of the retractile volutoid i Lsprinfg, from the side of the guiding sleeve n, at whichit may have, been resting, to the other side thereof, thereby throwing the line of tension between the two bearing points of the spring tothe said other side of the center (indicated by the sleeve n). The' spring A then under its retractile force, and through lformed by a manual ei'ort. i

This'application is a divisional partof application No. 191,602. Filed byme February 1, 1904.

"What I claimis as follows:`

1'. The combination with printing mechanisni, of a pair of, rotary drums adapted to havethe ends of the ribbon connected thereto, a unitary member reciprocating with each vaction of the printing mechanisinand adapted to directly engage and rotate either one of said drums, means normally out, of engagement with-Q and adaptedv to be actuated by the .ribbon when the latter nears the end'of the travel in one direction for shifting said unitary-4-.member from operative conneetionwith one-,of said drums into l 100 operative connection with the other.

2. The combination with printing mechanism, of a pair of rotary drums adapted to have the end sof the ribbon connected thereto, a horiz'ontalmember reciprocating with v each action of the printingmechanism and adapted to directly engage and vrotate either one of said drums, such member being of less length in direct line between its ends than the distance between the drums, means actuated by the ribbon when the latter nears the end of the travel inlone direction for shitting said horizontal member bodily from operative connection with one of said drums into operative connection with the other.

3.'1n. a typewritingmachine ribbon re- 'versing mechanism including a member adapted to be movedby the ribbon when it becomes taut or begins to tighten, and a lever arm connected thereto and adapted to be moved thereby, a pivoted armee-acting withthe ribbon reversing mechanism ,and a mempivoted arm after the movement' of the lever ill'nl.

4 1; The combination with a pair of ribbon drums,.and a pair or ratchet toothed disks ber adapted to engage with and move the in operative relation with the drums .of a

drum rotating device, means Slidably supportln'g,r the device adjacent to the dlsks,

suclidevice including means imparting vi.` i

bratory movement thereto transversely relatively to the ribbon and in a direction intersecting the plane in which the disks lie, and means for at times shifting the said device parallel to the said plane to bringthe sec- 'onu mentioned means into operative relation 4with the drums alternately.

5. The combination with 'printing'mechanism, of a ribbon feed consisting of a pair of rotary drums adapted to have the ends of the Iribbon connected thereto, a furcated member arranged to slide at right angles to a line intersecting the axes of the drums and reciprocating with each action of the p rinting mechanism and'adapted to rotate elther `one of saiddrnms, and means whereby said furcated member is automatically shifted from operative connection with one of said drums into operative connection with the other for the purpose of reversing the direction of feed of the ribbon.

6. The combination of ribbon-carrying reels having opposed ratchet-wheels, a reciprocating furcated actuating pawl pivotally mounted and movable into engagement with either of said wheels such actuating paw'l being of less length in direct line between its ends than the distance between the ratchetwheels a pivotally mounted fui-cated restraining pawl n'lovable into engagement with either ofvsaid wheels, and connections between said pawls causing the shifting of one to'shift the other.

Y. The coxubimiticn of ribboucarrying reels having opposed ratchet-wheels, a reciprocating fui'cated actuating pawl -pivotally mounted and movable into engagement with either of said wheels, a pivotally mounted furcated restraining pawl movable into engagement with either of Asaid wheels,'

Connections between said pawls causing the shifting of one to shift the other, and means normally out of engagement" with the ribbon for automatically reversing the pawls by the ruiming out et the said ribbon.

8. The combination with printing mechanism, of a p air of rotatory ribbon drums adapted to have the ribbon connected thereto, and ratchet toothed disksin ,operative connection therewith of a member of lless length in direct line between its ends than the distance between the disks, pawls at the opposite ends of such member, means actuated synchronously with each printing action for reciprocatingI the said member to and from opcrative'rclation with one of the disks, and means for at times shifting the said member from one disk to another such last mentioned means being normally out'of engagement with the ribbon and adaptedtoA be actuated thereby near the end of travel thereof.

9. The combination with printing mechanism, a ribbon carrier adapted to support and guide a ribbon across the printing point,

action of the printing mechanism, and means for feeding the ribbon, such means operating in unison with the movable part, a lever 1ntersecting the path of the ribbon andadapted to be moved bythe ribbon when such ribbon tightens, and means, co-acting with said lever, for causing the said horizontally movable part to reverse the direction' ofthe feed.

10. The combination with printing mechanism, and means whereby an inking ribbon is fed past the printing -mechanism of a movable device located adjacent to such feeding means, a re'ciprocatory part distinct from the ribbon feeding, means and actuated by the printing mechanism, an operative connection between such movable device and feeding means, whereby the movement of such movable device will reverse the feeding means, said reciprocatory part being adapted to at times engage and move said movable device, a lever actuated by the ribbon when it nears. the completion of its travel in one direction,'and means connecting such lever to said reciprocatory part, for the purpose set forth.

l1. The combination with printing mechanism, of a platen., means whereby an inking ribbon is fed between the printing mechanism and the platen, such feeding means being reversible', of an oscillatory arm pivoted adjacent to such feed device, a reciproca-tory part distinct from the ribbon feeding means and actuated by the printing mechanism and adapted to at times engage and swingdthe arm, an operative connection between the arm and feed device whereby the latter is reversed upon an.engagement being effected between the movable partand the arm, a lever intersecting the path of the ribbon and adapted to be moved by the latter when it nears the end of its travel in one direction, and intermedial means actuated by said lever for car-fing said reciprocatory part to engage the arm.

12. The combination with printing mechanism, of a pair of rotatable drums located one at each Side of such printing mechanism, a reciprocating pawl carrier, means operatively connecting the pawl carrier -to the printing mechanism to be reciprocated with each action thereof, .a movable part adapted when change the pawl carrier from rotative relation with onedrum to the other, a laterally movable and longitudinally reciprocating slide bar actuated bysuch pawl carrier and adapted upon being moved from side to side to move the said movable part and canse same to shift the paivl carrier, a lever adapted to be moved by the ribbon when it nears the end of its travel, and means actuated byV said lever for causing said slide'bar to move vlaterally for thepurpose set forth.'

movement is imparted thereto to 13. r1`he combination with printing mechanism, of rotatable drums located one at each side of suoli printing mechanism, a pawl carrier, means operatively connecting such 5 pawl carrier to printing mechanism to be re- .ciprocated with each action thereof, a movable part adapted when movement is imparted thereto to change the pawl carrier l .from rotative relation Vith one drum to the other, a laterally' movable and longitudinally-reciprocating slide Vbar, actuated by such pawl carrier and adapted upon being moved from side to side to 'move the said movable part .to cause same to shift the pawl 415 carrier, a bell-crank-'lever fulcrumed adja'-- cent to each drum having one of its arms adapted to intersect the path lof the ribbon and be moved by the latter when it nearsthe end of its travel, and a pair of links connecting the other arms of such bell-cranklevers to the slide bar, for the purpose set forth. y

14. The combination with printing mechanism, and a pair'of rotatable drums located one at each side of suoli printing mechanism,

of a reciprocating pawl carrier, means operatively connecting such pawl carrier to the printing mechanism to be reciprocated with each action thereof, a movable part adapted when movement is imparted thereto to change the pawl carrier from rotative relation with one drum to the other, a bar operatively connected to said pawl .'carrierto reciprocate simultaneously therewith and formed to engage and move said movable part when such bar is displaced laterally in either directi'onan oscillatory lever arm having a-4 sliding pivotal connection with .said bar, a pair of bell-crank-levers one lo- 40 ated adjacent to each drum and each having one of its arms adapted to intersect ythe path of the ribbon and be moved thereby when it nears the end of its travel,- and a pair of links connectingthe other arms 0f .15 such bell-crzmk-levers to such oscillatory lever arm for the purpose of transmitting the movement of said bell=cranklevers to the reciprocatory bar.

1.5."l`he combination with printing mechcated one at each side ofsuch printing mechanism, of a reciprocating pawl carl'icr, pawl carrier to the printing mechanism to be rcciprocated with cach act-ion thereof; means yieldingly retainingr said pawl carrier in the position to which it is moved, a

movable partadapted when movement is imparted thereto to change thepawl carrier from rotative relation .with one drum to the other, a bar operatively connected to said pawl carrier to reciprocate simultaneousljr therewith and formell to engage and more said movable part when suoli bar is 6 displaced laterally in either direction, 'an

anism, and a pairof rotatable drums lomeans. operatively comiecting suchoscillatory lever arm having a sliding pivotal connection With said bar, a pair of bellcranlr-levers one located adjacent to each drum and each having one of its arms adapted to intersect the path .of the ribbon and be moved thereby when it nears the end of its travel,.and a pair of links connectingl the other arms of such bell-crank-levers to said oscillatory lever arm for thel purpose of transmittingr the movement of said bellr5 crank-lm ers to the bar.

16. The combination with printing mecha- Y nism, and a pair of rotatable drums located one at each side of such printing mechanism, of a reciprocating pawl carrier, means operatively connecting such pawl carrier to the printing mechanism to be reciprocated With each action thereof, a retaining pawl adapt. ed to retain4 either drum inany position to which it may be rotated a movable part adapted when movement is imparted thereto to change theA pawl from rotative relation with one drum to the other, a bar operatively connected to said pawl carrier to reciprocate simultaneously therewith and formed to engage and move said movable part when such bar is displaced laterally in either direction, an oscillatory lever arm` having a sliding pivotal connection .'With said bar, a pair of bellcranklevers'.one located 95 adjacent to each drum and each having one of its arms adapted to intersect the path of the ribbon and' be moved thereby when it nears the end of its travel, and a pair of links connecting the other arms of Such bell- 100 crank-levers to said'oscillatory lever arm for the purpose of transmitting the --movement'of said bell-crank-levers to the` bar.`

17. The combination with printing mechanism, and a. pair of rotatable drums located one at each side of sachv printing mechanism, of a reciprocating pawl carrier, means operatively connecting the pawl carrier to the printing mechanism to be reciprocated with each action thereof, a retaining pawl adaptedl to retain either drum in any osition to which it may be rotated, means yield-A ingly retaining said pawl carrier in the position to which it may be moved, a movable part adapted when movement is imparted thereto to change the pawl carrier from rotative relation with one drum to the other, a lbar operatively connected to vsaid pawl carrier to reciprocate, simultaneously therewith and formed to engage and'n'lovesaid 120 movable part when such bar is dis laced laterally'in either direction. an oscil atory lever arm having a sliding pivotal connection with said bar, a pair of bell-crank levers -one located adjacent to each drain and each 12 having one of its arms adapted to intersect the path of the ribbon and -be moved thereby when it nears the end of its travel, and a. pair of links connecting the other arms oi such bell-crank-levcrs to said oscillatory 133' lever arm for the purpose ot' transmitting the movement of said bell-crank-lever to the bar. y

18. The combination with printing mechanism, and a pair of rotatable drnms located one at each side ot such printing mechanism, of a reciprocating duplex pawlv carrier, means operatively connecting such pawl carrier to the printing mechanism whereby such paw. carrier will reciprocate upon each action of the printing mechanism, a duplex retaining pavwl adapted to retain either ,drinn in any position to which it may be rot-ated, a movable part adapted when movement is imparted thereto to change the pawl carrier from rotative relation with one drum to the other, a bar operatively connected to' said vpawl carrier to reciprocate simultaneously therewith and tormed to engage and move said movable partwhen such bar is displaced laterally in either direction, an oscillatoiy lever arm havinga sliding pivotal connection with said bar, a pair ot' hellcranlt-levers one located adjacent to each drum and cach ha ving one ot' itsarinsadapt.- ed to intersect the. pat-h of the ribbon and bc nimmt thereby when it. nears the end oi its travel, and a pair ot links connecting the other arms ot snch bell-crank-levers to said oscillatory lever arm for the purpose ot transmitting the movement 'ot said bellcranli-levers to the bar.

lt). rl`he cimlbination with printing mechanism. n pair ot' rotatable drums loca tcd one at cach side ot said printing mechanism and adapted to have the ends of an inlting ribbon connected thereto, a part. ot each drinn being circular and havingv ratchet teeth formed in its periphery. and means for guiding said ribbon between the print-ing' mechanism and the platen, ot a reciprocatory carrier, means operatively' connecting such carrier to the printing mechanism to be reciprocated with each action of such printing mechanism, a duplex inrcated pawl carried by the carrier and adapted to be moved into rotative connection with the ratchet teeth of either drnm, an oscillatory arm pivoted independently ot" the said carrier and the pawl carried thereby, said oscillatory arm having a pair ot' radially projecting rigid dogs thereon one at each side of the pivot point, a bowspring connected at one end to the end of such oscillatory arm and at its other end to snch pawl at the crotch thereof, a. reciprocatory bar operatively connected to said carrier to reciprocate simultaneously therewith and extending over said oscillatory arm,

vsnch bar having a pair of downward proits travel, and means operatively connecting such last mentioned member to the said bar Vtor the purpose of causlng the movement of the member to move the bar laterally, sub' stantial ly asl described.

20. The combinationwith printing mechanism, a pair of rotatable drums located one at each side of said printing mechanism, a partof each drum being circular and having ratchet teeth formed .in its periphery,

land mea-ns for guiding said ribbon, of a rearm pivoted independently of the pawl car-l rier and the pawl carried thereby, said oscillatory arm having a pair of radiailly rojecting rigid dogs thereon one at each si e of the pivot point, a bow-spring connected at one end to the end of such oscillatory'arm and at its other end to such pawl at the crotch thereof, a second reciprocatory har Operatively connected to the said pawl earrierto reciprocate simultaneously therewith and extendingr over said oscillatory arm, such bar having a pair of downward projections located one at. each side thereof anda distance apart slightly greater than the length between the ends oi said rigid-dogs, an oscillatory lever a-rm'haviiig a Sliding pivotal connection with said' bnr, a pair o bellcranlt-levers one located adjacent to each drum and each having one of its -arms adapted to intersect the path of the ribbon and be moved thereby when-it nears the end of its travel, and a. pair of links connecting the. other arms. of sach bell-crank-levers to said oscillatory leverarm for the purpose of causing the movement. of the member to move said bar laterally substantially-as described. t

2l. ln a type writer the combination with the. frame thereof, printing' mechanism carried by snclrfraine and vincluding a universal member operatively connected to' the printing mechanism and moved by each ac'- tion ot' the latter and a pair of rotatable drums located one at each side of said printing mechanism, of a .horizontal reart wardly extending reciprocatory carrier, a vertical lever plvoted between its ends to the trarne of the machine and having the front of such carrier pivotally connected thereto a short; distance below the upperl end thereof, mea-ns operatively connecting` .the lower rotative connection with the ratchet. teeth ot'A either d rlim, an oscillatory arm pivotedto the frame of the machine and having a pair of radially lprojectie rigid dogs'thereon` onefatfeaeh side of t e ivot point and a vertieallyprojecting stu at its free end, a bow-spring connected at one endto the vsaid stud and at its other end to such pawl at the crotch thereof, a reciprocatory bar extending above and parallel to said pawl carrier and over said oscillatory arm, such bar being late-rally movable pivotally connected at one'end to the upper end of said vertical leverl and having its opposite end forked and a portion between its ends widened and formed -with an opening, a pair of downwardly projecting lugs one upon cach side of 'said widened portion,'a second oscillatory arm located above said bar and pivoted eoaxially with but independently of the tiiv'stlmentioned oscillatory `arm and havinga downwardly projecting Astud engaging the forked end of the reciprocatory bar,'a pair of bell-.cranklevers one located adjacent to each drum and each having one of its arms adapted to intersect the path of the ribbonand be moved there- 'by when it nears the end of its travel, and

i a pair of links connectingl the other arms of such belherault-levers to said lastA mentioned oscillatory lever arm for the purpose of causing the movement of the member to move .said bar laterally, substantially as described. j 4

22. 'ln a type ,writer the combination with the iframe and universal bar thereof, printingmechanism carried by such frame and a pair of rotatable ribbon drums located one at each side of said printing mechanism, a part of each drum being circular and having ratchet teeth formed in its periphery, of a horizontal rearwardly.extending' re ciprot-.atory carrier, a vertical lever pivoted between its ends to the frame ot' the machine and having `the front of such rearwardly extendingr bar pivotally connected thereto a short dist-ance below the upper end thereof, means operatively connecting the lower end of such vertical lever to the universalbar,

aduplex lfurcated pawl carried by such carrier and adapted tobe moved into rotative connection with the ratchet teeth of either drum, an oscillatory arm pivoted to the frame of the machine and having a pair of radially projecting rigid dogs thereon one at each side of the pivot point and a. vertically projecting stud at its free end, a duplex retaining pawl pivotednnidway of its length to the said oscillatory arm adjacent to`said stud, a bow-spriiig connected at one end to the said stud and at its other end to such pawl at the crotch thereof, a reciproeatory bar extending above and parallel to the carrier and over. said oscillatory' arm, such bar being laterally movably pivotally connected at one end to the. upper end of said vertical lever and having its opposite end forked and a portion between its ends widened and formed with an opening, a pair of down 'ardly projecting lugs one Vupon each side of said widened portion, a

second oseillatorycarm located above said' bar and pivoted coaxially with but independently of thctirst mentioned oscillatory arm and having a downwardly projecting Stud engaging the forked end of the said reciprocatory bar, a pair of bcll-crank-levers one located adjacent to each drum and each having one of its arms adapted to intersect the path of the ribbon and be moved therev4by when it nears the end of its travel, and a pair of links connecting the other arms of such bell-eranlelevers to said last mentioned oscillatory lever arm for t-he purpose o f causing the movement of the member to move said bar laterally, substantially as described.

ln testimony whereof, l have signed my name to this specifieation, in the presence of two subscribing witnesses.

WELLINGTON PARKER RIDDER.

Witnesses M. E. Kumi', J. J'. KENNEN.

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