US1375344A - Typewriting-machine - Google Patents

Description

F. H. ARMSTRONG.

TYPEWRITING MACHINE.

APPLICATION man ocr. 16,1917. RENEWED SEPT-24, 1919.

1,375,3%%= Patented Apr. 19, 19210 2 SHEETS-SHEET1.

754,7 GU01 M21 4 I F. H. ARMSTRONG. TYPEWRITING MACHINE. APPLICATIPN FILED OCT. 16.1917. RENEWED sEPT.24. 1919.

Patented Apr. 19, 192E 2 SHE'ETS*SHEET 2.

at far.

FRANK H. ARMSTRONG, OF AUBURN, NEW YORK, ASSIGNOIR, TO CORONA TYPEWRITER COMPANY, INC., OF GROTON, NEW YORK, A CORPORATION OF NEW YORK.

TYPEWRITING-MACHINE.

Specification of ietters Patent.

Patented Apr. 19,1921.-

Application filed October 16, 1917, Serial No. 196,867. Renew d September 24, 1919. Serial No. 325,962.

To all whom it may concern:

Be itknown that I, FRANK H, ARMSTRONG,

1 a citizen of the United States of America,

and a resident of Auburn, county of Cayuga, State of New York, have invented certain new and useful Improvements in Typewriting-Mac-hines, of which the following is a full and clear specification.

This invention has particular reference to the means for supporting and guiding the platen carriage, and the object of the-invention is to provide simple means whereby the carriage will be assured of an easy,

steady movement, devices being provided for compensating for wear and for slight unevenness of the anti-friction ball raceways, as more fully hereinafter set forth.

Referring to the annexed drawingsand itssupport;

Fig. 2 is a bottom view thereof; Fig. 3 is an end elevation thereof partly in section, taken on the line 33 of Fig. 1,

Fig. 4 is a fragmentary transverse section through the race-way having the movable flange or member;

Fig. 5 is a horizontal section on the line 5-5 of Fig. 3;

Fig. 6 is a vertical longitudinal sectional View on the line 6-6 of Fig. 5;

Figs. 7 and 8 are side elevations of'two slightly difl'erent forms of ball spacers; and

Fig. 9 is a detail view showing a modification of the stop for the yieluable raceway. 1

Referring to the drawing by reference characters, it will be observed that the carriage consists of a sheet metal plate awhose ends are bent up at Z) to form supports for the platen c and whose longitudinal edges are bent downwardly the full length of the;

plate (1 to form a pair of depending flanges (Z, these flanges being formed with longitudinal race-way channels 6, which face inwardly, that is, toward each other. 7

The supportingor base plate f is aflixed to the frame bars 10 of the carriage frame and is provided with longitudinally extending upstanding flanges g bent to form outwardly facing ball channels it, it, these channels h, it being complementary to the outer channels 6 so that the anti-friction balls 2' are received 1 between each pair of channels. One of the Figure 1 is a rear elevation of a carriage g is formed integral with the baseand the other is pivotally connected theret and has a limited inward and outward swing. This movable flange is. normally pressed outwardly by a pair of springs j, ea 1 consisting of a .fiat plate fastened tothe nder side of the base-plate f and hav-. ingts free end extending up through an ope ing therein and bearing against theconvex /side of the channel it in the adjacent movable flange g, to thereby press said movable flange outwardly and maintain the' balls at both sides of'the carriage in operative position and compensate for unevenness in the tracks as well as for. wear. To further compensate for unevenness in the track due to imperfection of manufacture, or

presence of grit, or slighttwisting or disthition of the track members-I divide the swinging member or flange into two parts,

division being made at k, about midway the ends of the swinging track member, one of the springs jbeing arranged to bear against each of thesections of the track member.

Two ballsare arranged in each race-way,

one at each side of mid-length of the carriage, by means of'a spacing bar Z, this-bar extending across break 70 in the movable track-member g and serving to restrict'the' travel of each ballin the race-way to one section of the: divided track member or flange. To-prevent an excessive movement of this anti-friction device ineither direction, I provide stop-screws m in the raceways. Each of the spacing bars Z, is provided with a head i at each end, in which w'ay flange g away from its companion raceway flange (Z. To prevent this abnormal tilting of the bar, I provide each of the heads 71 with a pair of projections 2' which extend respectively upwardly and downthe body of the base plate 7. These chair 1* wardly far enough beyond the race-way grooves to strike against the adjacent flat faces of the flanges'd and g and thus serve to maintain the spacing bar approximately edgewisely vertical under all conditions. This non-jamming spacing member orbar willbe particularly advantageous in use on a Corona machine, in View of the fact that in that machine the platen-carrying member of the carriage is frequently subjected to downward and lateral thrusts in folding and unfolding the platen carriage frame, the bars 10 of which are shown in thedrawin as To prevent excessive swinging inwardly of the movable race-way flange, I provide a series of set screws ntapped upwardly through the'supporting plate f and so positioned as to form stops against which the channel portion-h of the flange strikes in case the flange is forced an undue distance inwardly. .A lock nut 0 is provided on each of the set screws for looking it in its ad justed position. Instead of set screws, ,1 may, asshown in Fig. 9, form a non-adjustable stopfn, by striking up a portion of nel-flange stops are particularly advantageous in that they prevent the. movable channel member from being swung inwardly far enough to permit the platen-carrying -memberfbeing disconnected from the base member of the'" carriage. These arresting stops are particularly advantageous in a. machine of the Corona type in which the platen-carrying member, in the act of folding and unfolding theanachine, is exceedingly' liable to be subjected to transverse thrusts; V

I The sections ofv the movable flange 9 formed with the race way'h are pivotally connected to the base-plate by having each of the sections provided at each end with a hook lug 0 extending through the base plate and engaging theunder side of the plate. The hook lug 0 at the outer end of .each of the sections engages in a notch 10 formed in the end of the base-plate and the hook lug 0' at the inner end of each section extends through one of the spaced longitudinal slots 9 formed in the plate 7", the slots 9 being long enough to permit the hooks 0 to passtherethrough. In assembling, the hook lug 0' at the inner 'end of. each section is inserted through the adjacent slot 1 and then the section is moved longitudinally until the shank of the outer hook l'ug engages in notch p. The free ends of both hook'lugs on each section will then engage the under side of the base-plate. When each section is assembled on the base-plate in this manner, the two ends thereof meet at the joint 70, and the two sections are locked in this assembled relation by means of a plate 1' fastened to the under side of the base or supporting plate. f by screws 8 and prochines, such as the vided'with'lugs t engaging behind the two center lugs 0'. held against outward sliding action, wlth The two sections are thus their hook-shaped ends engaging under the base-plate-f. The slots? and g are sufliciently wide, compared with the thickness of the plates from which the sections of the movable raceway flange are formed, to permit a limited swinging movement of the sec-1 tions, the movement of each section being independent of the other section. The rear A longitudinal edge of the base plate f is bent upwardly to form a longitudinal flange u to stilfen the plate.

It will be observed that the race-way flanges 9 .carried by the base plate are formed with flat upper edge portions extended to near the'under face of the platencarrying plate This not 'only aids in stiffening the flanges onthe base plate, thus permitting them to be constructed of, thin gage. sheet metal, but also permits these flanges g to function as stops in case the I platen-carrying plate a is forced downwardly with'sutlicient severity to cause the movable race-way h to. be swung inwardly .far enough to .permit the said plate a to displace the balls occurs when the carriage of the Corona machineis lifted and thrown backwardly into operative position, as well as when the carriage s swung forwardly and dropped down into compact position.

The nature. and scope of the invention having been thus indicated and its preferred embodiment having been specifically. de-

scribed, what is claimed as new is:

1. In comblna'tion, a platen carriage and a support therefor, the carriage and the support being provided with cooperating raceway flanges, one of the flanges being movable and means being provided for normally pressing it toward its companion flange, said movable flange being composed of independently-movable sections, for the purpose set forth.

2. In combination, a platen carrying member provided with a pair of race-way flanges,

a supporting member likewise provided with' a pair of race-way flanges, anti-friction balls in the race-ways formed by said flanges and means for spacing the balls so as to main-, tain them at opposite sides of. a point midlength of the platen-carrying member, one of said raceway flanges being divided into two parts both parts being pivotally connected to one of saidmemb'er's, and'ineans for normally pressing said sectional raceway flange against the balls, for the purpose set forth.

,3. In combination, a platen-carriage member having race-way flanges, a supporting member having complementary raceway flanges, one of said flanges having a limited pivotal movement on one of said members, and stops arranged on this latter member to engage the movable race-way flange to prevent undue movement thereof.

' 4. The combination with two sheet metal members one adapted to support a platen and the other adapted to be attached to the frame of the machine and each being provided with a pair of race-way flanges, the flange on one of the members being, movable toward and from its companion race-way flange, of springs fastened to the member carrying said movable race-way flange and bearing normally against the flange to force it toward its companion race-wayflange.

tachment to the typewriting machinea'nd.

5. In combination, a pair ofsheet metal members one being adapted to support the platen and the other bein adapted for ateach provided with a pair of race way flanges, one of the flanges on one of-the members being movable toward and from its companion flange, this movable flange being sectional and the connection between each section and its supporting member consistng ofhook-shaped lugs engaging 'in, openings in said member, means being providedfor holding these' lugs in locked position.

6, In combination, a. platen-carriage plate, 7 a base-plate, race-way flanges carried by, said plates, one of said flanges being pivotally connected to one of said plates and being sectional, the connection between each section and the plate consisting of a pair of hook-shaped lugs extending through openings in theplate and engaging the opposite side thereof, anda locking device on the plate.

7. A platen supporting structure, comprising a traveling carriage having raceway channels, a sheet metal carriage bed having a rigid integral flange at one edge formed with a raceway channel and a longitudinal stiffening flange at its opposite edge, a racef way member divided inte independently movable sections each having a rocking connection at one edge with the bed adjacent said stiffening .flange' and formed witli a racewaychannel, anti-friction rolling"ele-' ments' in the raceways formed by said chan 'nels, and means for yieldably pressing the sections of said divided member against the anti-friction elements.

8. 'A platen-supporting structure, comprising a sheet metal traveling carriage having depending raceway flanges, a sheet metal carriage bed having an upstanding integral raceway flange at one edge and a detachable raceway channel member adjacent its opposite edge having a rocking connection with the base of the bed, the integral bed flange and said raceway channel member being inclosed within the flanges on the carriage and having upwardly extending vertical portions above the raceway channels the upper edges of which lie closely adjacent the under side of the carriage, anti-friction rolling elements in the raceways, and means for yield ably forcing the rocking raceway member toward its companion raceway flange on the carriage.

9. A platen-supporting structure,comprising a sheet metal traveling carriage having depending raceway flanges, a sheet metal carriage bed having an upstanding integral raceway flange at one edge and a detachable raceway channel member adjacent itsppposite edge having a rocking connection with the baseof the bed, the integral bed flange and said raceway channel member being inclosed within the flanges on the carriage and having upwardly extending vertical portions above the raceway channels the upper edges of which lie closely adjacent the under side of the carriage, anti-friction rolling. elements .in the raceways, and means for yieldably forcing 'the' rocking raceway member toward its companion raceway flange 0n the carriage, and integral stop lugs stamped from the carriage bed for limiting the movement 9f the rocking raceway member away from its companion raceway flange.

10. In combination, a I plate member tween the support and platen-carrying means comprising two race-ways and a plurality of rolling elements confined in said race-ways, one member of one of said r'aceways being divided into independently yieldable sections alongea'ch of which one rolling element is adapted to travel.

12. In a typewriting machine, the combination of a support, platen-carrying means, and an anti-friction bearing interposed between the support and platen-carrying means comprising two race-ways and groups of opposed rolling elements confined in said race-ways, one member of-one race-way being divided into independently yieldable sections with each of which one group of opposed rolling elements, cooperate.

13. In a typewriting machine, the combination of a platen carriage, a support for the carriage, and an anti-friction bearing interposed between the carriage and its suprace-w ays,'each rolling element in the raceway having the divided member being adapted to travel along'a single section of the divided" member. a 14. The combination of, a pair of sheet metal members, one of which is adapted to support aplaten and theother of whichis adapted for connection with the frame of a typewritmg machine, each of said membersbeing provided with a pair o'frace-way flanges adapted to cooperate with the flanges T on the other member, one flange on one memher being divided into sections which are independently movable toward and from the cooperating flange, interlocking rocking connections between each section of the di- V'ldfid flange and its supporting member, in-

, dependent means for normally pressing each section of the divided flange toward itscooperating flange, and rolling elements confined in flanges.

15. Thecombination of a sheet metal platen carriage formed with integral de-' pending race-way flanges, a sheet metal base plate provided with race-way flanges ex-I tending upwardly within the depending vflanges onthe carriage, one of theflanges,

on the base plate having an interlocking rocking connection with the baseiplate, resilient means for normally forcing said latter flange toward the cooperating flange on the carriage, and anti-friction balls confined in the race-ways formed by said flanges. V

16. The combination of 'a sheet metal member adapted to support aplaten and formed with integral depending race-way flanges, a sheet metal base tor supporting.

the' platen supporting member provided with race-wayflanges extending upwardly between the flanges on the platen supporting member, one of the flanges on said base being divided into independently movable sections,each 01": which is detachably held to the base by hook lugs forming a rocking connection, means for normally forcing each section of the divided flange toward its co operating flange, and anti-friction balls confined to the race-ways formed by the flanges.

17. An anti-friction support for a platen, comprising two members provided with c'ooperating pairs of race-way flanges, one of said flanges being divided into sections movable independently toward and from its cooperating flange, a plurality of anti-triction balls confined in the race-ways formed by the flanges, and means for maintaining the balls in spaced relation and restricting.

the race-ways formed by said ellng the raceway channels.

of which isformed with a pair of integral race-way flanges and the other of which is provided with an integral race-way flange and a movable race-way flange cooperating v with the flanges on'the other member, said movable flange being divided intosections each of which has an interlocking rocking connection with its supporting member, in-

dependent resilient means for normally forcing each section of thedivided flange toward its coflperating flange, anti-friction balls'iconfined 'in the race-ways formed by the flanges, and means for restrictlng the travelofeach ball in the race-way having the divid'ed flange to a single section of the divided flange.

the travel of each ball in the race-way hav- '19,. Thebo'mbinationj of a platen carriage having raceway channels and flat facesat both sides of the channels, a pair of nontraveling raceway members having raceway channels cooperating with the channels on the, carriage'and formed with flat faces at both sides, of thechannels, one of said nontraveling members being divided into sections movable independently toward and from the adjacent channel on the carriage,

rolling elements in the raceways, and a bar loosely hung on the rolling elements in each raceway and having a pairof oppositelyextending projections adj'acent'each end travbetween the flat faces at the sides of i 20. The'combination of a platen carriage having raceway channels and flat faces at both sides of the channels, a, pair of nontraveling raceway members having raceway channels coiiperating with the channels on the carriage and formed with flat faces at both sides of the channels, one of said nontraveling mer'nbersv being divided intosections movable independently toward and from the adjacent channel on' the carriage, rolling elements in the raceways, and a bar loosely hung on the rolling elements in each raceway and having a pair of oppositely extending projections adj acent' each end traveling between the flat faces at the sides of the raceway channels, and means carried by the non-traveling raceway members adjacent each endthereot adapted to engage "the rolling elements at the opposite ends of the bars to restrict the travel of the rolling elements.

21. A platen support, comprising a sheet" metal traveling member having raceway flanges, a sheet metal stationary member having raceway flanges, all of said flanges having flat faces at opposite sides of the raceway channels and one of said flanges being divided midway its length into sections having rocking connections with their supporting member, means for yieldably forcing the sections of the divided flange toward its cooperating flange, a pair of balls in'each raceway,'a spacing bar in each raceway having eyes adjacent each end thereof to receive ,the balls, and lugs adjacent each end of the spacing bars traveling between the flat faces of the flanges.

22. A platen support, comprising a sheet metal traveling member having raceway flanges, a sheet metal stationary member having raceway flanges, all of said flanges having flat faces at opposite sides ofthe raceway channels and one of said flanges being divided midway its length into sections having rocking connections with their supporting member, means for yieldably forcing the sections of the divided flange toward its cooperating flange, a pair of balls in each raceway, a spacing bar in each raceway having eyes adjacent each end thereof to receive the balls, and lugs adjacent each end of the spacing bars traveling between the flat faces of the flanges, and stops carried by the flanges onthe stationary member adjacent each end thereof adapted to engage the balls, said stops and the spacing bars cooperating to limit the travel of each ball to one side of mid-length of the stationary member.

4 23. In combination, a platen-carriage member having race-way flanges, a supporting member having complementary raceway flanges, one of said flanges having a yielding movement on its carrying-member, and a stop to prevent undue movement of the movable flange away from its complementary flange.

24. In a typewritingmachine carriage, a sheet metal base member provided with upstanding race-way flanges, a sheet metal platen-carrying member provided with depending race-way flanges, rollin elements in the race-ways formed by said flanges,the flanges on one member extending above the ball race-ways and close to the opposing face of the other member to form stops to limit the downward movement of the platencarrying member, one of said flanges being laterally yieldable toward and from its companion race-way flange.

25. The combination of a platen carriage having raceway channels, a pair of stationary raceway members having channels cooperating with the channels on the carriage, one of said members being divided into independently movable sections, means for yieldably forcing said sections of the divided member toward its companion raceway channel, rolling elements in the raceways, spacing devices for the rolling elements in the raceways, and means for limiting the travel of the spaced balls.

26. In combination, a platen carriage member having race-way flanges, a supporting member having complementary raceway flanges, one of' said flanges havin a limited movement onits carrying-mem er, and a stop onthis latter member arranged to engage the movable flange to prevent undue movement thereof away from its complementary flangeQ 27. In a typewriting machine carriage, a basemember provided with upstanding flanges having race-Way channels, a platencar'rying plate liying over, the top edges of said flanges an provided with depending race-way flanges, rolling elements in said race-ways, said upstanding flanges extending to near the under face of said platenca'rrying plate, one' of said flanges being laterally yieldable toward and from its companion race-way flange.

28. In a typewriting machine carriage, a plate member adapted to support a platen and provided with dependin race-wa flanges, a base plate provided wit up-stan mg race-way flanges,'one of said race-way Iflan es being attached to its carrying plate V plate, and a locking plate engaging said hook-lugs and detachably locking said raceway flange to said plate.

This specification signed this tenth day of October, A. D. 1917.

FRANK H. ARMSTRONG.

ook-lugs entering openings 1n said-

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