US1033124A - Ribbon feed and movement mechanism. - Google Patents

Description

APPLICATION FILED AUG. 5,1904.

3 SHEETS-SHEET 1.

Patented July 23, 1912.

J. B. SEOOE. RIBBON FEED AND MOVEMENT MECHANISM.

APPLICATION FILED AUG.5, 1904. 1,933,124.

Patented July 23, 1912.

s sums-sum z.

J.B.SEG0R. RIBBON FEED AND MOVEMENT MECHANISM.

APPLICATION FILED AUG.5, 1904.

Patented July 23,--1912;

3 SHEETS-SHEET WW 0 who (Mu? citizen cf the United Loss.

'hereinaft er l UNITED STATES PATEN T OFFICE.

JEROME B. SEUUR, OF DERBY, CONNECTICUT, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO SECOR TYPEWRITER COMPANY, OF DERBY, CONNECTICUT, A CORPORATION OF CONNECTICUT.

Application filed August 5,

To all w/mm it may concern. 1

ie it known that l, .lruonu B. Sncou, a States, -residing at Derby. in the county of New Haven and State of Connecticut. have invented certain new and useful lm n'ovements in Ribbon Feed and Movement Mechanism. of which the following is a specification.

The object of my invention is to provide ribbon feeding mechanism for that class of typewriting machines known as front strike machines in which the ribbon is fed step by step noon each actuation of the type bars and in whichfthe ribbon is moved upon each operation of a type bar to the printing point to receive the type head impact.

My invention is furthermore applicable to a typewriting machine in which the platen is shifted to change the case of'the type and for which purpose I have provided an improved means whereby, upon changing the printing case, the ribbon will be shifted to a. ditt'erent initial point so that upon actuation of the type bars, the ribbon will always be brought to the proper printing position.

In a machine involving my invention is embodied a pair of ribbon spools, one at each side of the. machine. and carrying individual feed devices suitably connected to and actuated by the type bar actuating mechanism. Relating to this portion of the machine, my invention comprehends an improved means whereby the reversal of the direction of feed of the ribbon is brought about consisting in a suitable connection between the individual ribbon feed devices, by which only one of said devices will operate at a time and through which one of said feeding devices is thrown out while the other is thrown into operation.

My invention furthermore relates to many improved details of structure incidental to the above named iml'n'ovements which will )0. made clear and are shown in the accompanying drawings, in which like reference numerals refer to like parts and in which Figure l is a transverse section through a front strike typmvriting machine, parts of the ribbon feeding mechanism being'removed and showing especially my improved ribbon movement: mechanism and its connec- Specification of Letters Patent.

Tdevices shown in F sectlonal view, through one. of the ribbon .bon feed devices; and Fig. a modified form f=- ribon'.-.j

Patented July 23, 1912. 1904. Serial No. 219,607.

tion with the type key and platen shift levers. Fig. 2 is a detail perspective view of a bracket and a depressible frame pivoted therein forming part' of the ribbon movement mechanism. Fig. 3 is a detail side elevation of the ribbon vibrating levers showing means operating same and showing the same in contracted positions. Fig. 4 is a similar view showing same in extended positions when operated by the platen shift mecha nis1n.- Fig. 5 is a like View when operated through the universal bar. Fig. 6 is a detail elevation, looking in a direction opposite to Fig.1, and showing the overlapping ribbon vibrating levers, thebracket upon which they are pivoted and a means for. actuating said levers. Fig. 7 is a detail front elevation of theribbon'frisket and alining plate upon which the same is mounted. Fig. 8 is a bottom plan View of the individual ribbon winding or actuating devices showing the parts of one of said devieesin operative engagement and parts of the other of said de vices out of operative engagement and'showing the means for actuating said devices. Fig. 9 is a detail side elevation of one of the 8. 'Fig. 10 is a detail spools showing the connection with its ro-' tating shaft and showing the ribbon leading from such spool. Fig. 11 is a side elevation of a slightly modified form of means for operating the ribbon vibrating levers. Fig. 12; is a detail side elevation of a portion of the same. Fig. 13 isa top plan view of the samei Fig. 14 is a detail elevationfof a'portion'of;

thestructure shown in Fig.

10, showing the x same in operative engagement withathe rib 15 is a'detail view illustrating vibrating lever.

Referring now in detail to 1 represents the frame of the'machinehaying mounted thereon afulcrumbar 2 at the rear of the machine upon which the key levers3 are -fulcrumed. Key le'vers 3 are held normally in elevated position by coil springs 4 ,secured tothe heel of the levers' 3 at one end and secured attheir other ends, to a portion of the machine frame. Mounted'abo-ve the key levers 3 on brackets'5 on the bridge 6 of the machine are pivoted a series of type bars 7 arranged. in a segment,

thedrawings:

i is clearly shown and described in my apply and to which are'connected at their heels the straddle links 8. straddle links 8 are connected at their forward ends to the upper arms of bell cranks 9 pivotally mounted on suitable brackets 10 on a bar 11 extending transverse the machine. The lower arms of.

bell cranks 9 are engaged by downwardly extending straddle links 12 which are con mected at'their lower ends to the key levers 3., A depression of any one of the keylevers ried 3y each of the straddle links 8 is a pivoted hooked arm.14 rest-mg upon a universal bar 15 carried by it irame 16., Frame 16 is suitably mounted-upon a shaft 17 extending transverse the machine Engagement of he universal bar 115. by thehooked arm 14: upon each actuation of a1 straddle link 8 will rock the frame 16 whichheing rigidly mounted upon the shaft 17 will rockv the said shaft. (Fig. 1.) All of the mechanism thus far described cation filed August 7th, 1903 for-improve: merits in 'typewriting machines, Serial No. 168600. I v a Shaft 17 has rigidly mounted thereon at each side of the machine a downwardly depending arm 18. t i

19' are the ribbon-spool shaftshaving their upper ends a bevel gear 20 adapted to mesh with abevel gear 21 on the ribbon spool carriers .22mounted onpinskor prejeCtiOnS 23 rigidly seatedi'n the top of the machine frame 1. Spools 22 are mounted on carriers 22. The pins or projections 23 c are set at slant to oifset the spools from the carriage and to provide the proper feed slant for the ribbon in tooth its upper and lowercase ositions. (Fig. 10. At the lower end 0 each of the shafts 19 is rigidly mounted a ratchet wheel 24:, and loosely mounted on each of the said shafts is abell crank lever 25 carrying at one end antifriction rollers 26 adapted to be moved by means hereinafter described into and out of the path of vibration of the downwardly extending arm 18. At its other end the bell crank 25 carries a pawl 27 pivotally mounted on said bell crank and held normally in engagement with the teeth of the ratchet wheel 24; by a spring 28. The shafts 19 are seated in brackets 29 mounted upon the machine base, and bell cranks 25 .are connected to the'brackets29 by coil springs 30, coil springs 30 tending to hold the bell cranks 3 will draw its straddle link 12 downwardly,

The return of the straddle links 8 to a projection on the straddle link 8. Car

vided with a thumb piece or projection 37 upon which the spool carriers 22 are mo-unt-' is provided the rollers 25 in a positicn which will bring their antifriction rollers 6 into the path of vibration of thearm 18. 4

8 1 is a dog mounted pivotally on brackets 29, held in engagement with the teeth of ratchets 24: by a spring 34 and adapted to prevent movement of said ratchets in the wrong direction,

It will be readily seen that each time an arm '18 engages an antifriction roller 26 on the beltcranks25, the said bell cranks 25 will be displaced in oppositionto the coilsprings 30 which tend to hold the rollers 26 in the path of arms 18 and ratchet wheel 24 will be i rotated, and, through the] mechanism already, described the 's'pool 22 mounted upon. the shaft 12 rotated, will be rotated to wind the ribbon upon that spool.

in order to throw one of the pawls 27 out of engagement with the teeth of its ratchet 35' wheel 24 while the other pawl 27Qis being actuated, I have provided a segmental cam plate 31 mounted on each of the shafts 19 aboye-the hell crank 25 and bracket 29, and having cam prcgections or surfaces 32 adaptco ed to ride under the pawl 27, and 33 adapt- ;ed to ride under the pivoted dog 34land "carry the same out of engagement with the teeth of rs tchet in opposition to spmngfi'; Camplate 31 is provided with an arm or projection '35 to which is connect- .ed a link 36., connected at the othercnd to the arm or projection 35 on the opposite cam plate 31. One of the cam plates 31 is pro 106 by which the camplatesfil may be adjusted to throw the pawl 27 a d dog 3 at one or the ratchet wheels '24 into engagement, and the pawl ,27 of the other ratchet wheel 24 outofengagernent, for the purpose of reversing the feed of the ribbon. The cam plates 3,1 are so connected by the links 36 that oscillation of one of said cam plates to bring its pawl 27 into engagement with the teeth of the ratchet wheel will throw the 110 pawl 27 ct the c 'posite'cain, platejti out of engagement wi the teeth of, its ratchet wheel 24. (Fig. 8.) v j On each of the cam plates 31 is a pro; jection 25'" adapted either to engage and move bell cranks 25 in opposition to springs 30 to take rollers 26 out-cf the path of on gagement at the same time that cam surfaces 32, 33 ride under pawl 27 and dog 34 respectively. or to allow the roller 26 to be 12 drawn into the path of engagement at the same time that pawl 27 and dog 34 are low ered'into engagement with the teeth of the ratchet. wheel 24. Each of the brackets 29 with a stop 26 against which 26 abut normally, the function of these stops being to prevent said rollers- 26 from going beyond the path of reciprccation of arms 18.

l have now described the means for rot-at 13.3

free ends of which is pins 48 pin 57.

55 upon movement of the arm the spools :22 (Fig. 10) and passed from, one spool through a vfrisket 43 slidably mounted upon the ali-ning plate 44. (Fig.1.

and from the printing tuation of a type bar, of shifting tial and for the purpose said .fnsket to an advanced inilowing mechanism: positioned-on the bar 11 is a bracket 45, in which is pivoted a U shaped frame 46, (Fig. 2) carrying at its free end a U-shaped. link 47,'t'l'i'iough the passe'd a pin 48 proecting from said link 47. Frame 46 is provided with a pin'49'tli-rough its sides and projecting .to on'e side of said frame 46, and in direction'oppositeto the pin 48. Both and. 49 may carry, a ntifriction rollers. 5O is at forked arm on a bar 51 connecting a pair of platen shift sub-levers 52, which are pivoted at 5'3 on the machine frame.

connected by straddle linkd 5'5 to main shaft key levers 56,, which are rigidly mounted at their rear ends on a rock shaft and held in raised position by the usual spring means,

IQO' SZIId rock shaft and spring means not being shown in the drawings. Levers 56 being mounted rigidly upon the rock shaft, move in unison. Bracket 45 is provided with an arm or extension in which seated a pivot- Fig. 6.) Pivoted on pin 57 is a ribbon vibratinglever 58, one arm of which is connected to a bent pitman 59 engaging a perforation 60 in the frisket 43, and a slot 61 in the alining platc 44, which limits the movement of said pitman. The other arm of the lever 58 is provided with a notch 62 engaging the pin 48 and a portion of the engagini'g' surface of which is angular to the path of travel of the pin 48 in one direction to form a cam so that upon movement of pin 48' in either direction permitted by its link 47 the lever 58 will be displaced to move the pitman 59. Hung to pin 57 is a'second ribbon vibrating lever63 overlapping 5 lever one arm thereof, engaging pin 48. The,

58 and provided with a notch 64 in other arm of the lever 63 is engaged by a projection 65 mounted on an'arni 66 rigidly n'iounted on the shaft 17. PllOjGCtlOll 65, 66 by shaft 17 displaces the lever 63 moving p1n48, and link 47 on its pivot and laterally forcing said pin against the side of the notch 62, "the lever 58, in order to compensate for said lateral moven'icnt. of the pin 48 being'forced to turn onits pivot 57, and thus moving the pitman 59 as the shaft 17 1S oscillated upon each actuation of a type bar. Through this means the pitmanv 59 is moved upon each actuation of a type bar. The movepoint upon each at point upon actuation of either ofthem platen shift levers, I have provided the fol-- Levers 52 engage at their rear ends 25 a platen elevating-frame 54. Levers 52 are ment of lever 63 by projection is limited by a stop 67 (Fig. 6) on bracket- 45 engaging a notch on lever 63. If shift key 56 be operated, turning the shift sub- For the purpose of moving the' fri sket-- to levers 52 on their pivots, the frame 46 through the pin 49 and forked arm 50 of the bar 51, will be displaced, moving pin 48 in,

58 moving the pitman 59 and carrying the frisket 43 to an "advanced initial point in A subsequent actuation of any one of the type bars will displace the its reciprocation.

pin 48 laterally in the manner already described, and therefore displace or move the lever 58 on its pivot 57 to move the pitman 59 and the bracket 43 to the advanced printing point. Hence it will be seen device is operative in both of th H156 positions of the platen and that up the shifting of the platen the frisket'is shifted to an advanced initial point. In order 'to prevent the lever- 63 "from being displaced by the pin 48'when the latter is moved through the fat the ,platen shift mechanism, a portion of the bracket 45 is bent outwardly into the path of the lower arm of the lever 68 to form a stop 45 so that the lever will engage the same immediately upon movement of the pin 48 by the platen shift mechanism, and its displacement by the said pin 48 will be prevented which will have the eliect of maintaining the pin 48 in its proper path against the angular portion of the notch 62 to elevate the frisket as desired.

In Figs. 11, 12 and 13, I have shown slight modifications in the mechanism just described for operating the ribbon vibrating levers. Therein I have shown a means for operating the lever 63 by the key bars 3 instead of by. the hooked arms 14 carried by the straddle links 8." For this purpose I construct the bracket 45 with an upwardly projecting arm 69 which carries a pivot pin 70 on which is pivoted a bell crank 71 carrying on its lower arm an antifricticn roller 72 engaging a notch 73 in the upper arm of the lever 63. Pivoted to the upper arm of the bell crank 71 is a depending rod or link 74 which is connected at its lower end to an arm 7 5 on a depression frame 38. The depressible frame 38 is pivoted at 39 to the sidesof the machine frame 1 and carries at its upper end a rotatable universal'bar 40, this bar 40 being a substitute for the universal bar 15 carried by the arm 16. This universal bar 40 is located and held in engagement on the under-sides of the key levers 3 by spring or springs 41 secured at their lower ends to the frame 38 and their upper ends to a portion of the "i'iiiichine. frame. Upon each depression of a key'lever 3, the universal bar 40 is forced down turning the deprcssihlc frame 5355 upon its pi'v druwing the rod T l downwardly, turning the hell crn'nl; Tl on its pivol; 70 an l depressing the lever 53 to elevate the pitmen through the notch G l, pin r-S end the notch (32 in the lever in Fig, l4; is shown a, slight modification the means already described for actuating; the hell crank carrying the pn-vvls If to eilect the rotation of the ribbon shafts ll). .sl pair oil? projecting cum fingers 4:2 nu'nin'ted on the frame 38 and adapted to engage the cnlifriction rollers .26 on the hell cranks in the same n'uinner as the arm nhcfere described except that such rollers '26 ere in this structure changed to vertical position to meet the thrust of the llUQQl l2, which, being; mounted upon the l depressihle frame 38 travels in e as shown in Fig. 155, the overlapping rihhon vibrating levers may he modified by doing away with one Well all the notches 62, 6 1-, that by constructing the lever; so that the pin all? will engage the edge of the notches in said leve llhc levers being overlapping and hung to the same pivot 52'' in this modified structure the pin l8 engages the opposite ()(IlgBS of said levers, the

edge of the lever 63 being straight the en ing edge of the lever 58 angular and in principle to the operation elf the notche levers and quite as cil'cctive.

1 do not desire to limit myself to the con structicn shown and dcscrihed herein hut the same may be varied \vijhcnt depcrling from the spirit and scope of my invention.

liming thus described my iiwention, the folio g whet ll claim as new therein and dc, re to secure by Letters lfctentz 1. ln a Writing machine, the combination with the rihhon spool and theshelt geared thereto, o? c. mltchct Wheel rigidly mounted on said melt, a hell crank leoscl v mounted on said shaft, he pawl carried h the ssh hell crenl; end in geinent with the teeth of ratchet Wheel, the rock shaft su'iinhl nionnted in the machine frame, the universsl her mounted the roe-h shaft and adm red. to reel: the same, the dcwnn'ergll v exten n; arm mounted on the said roclr shaft d adapted to engage and displace the id bell crenlr to feed the said ratchet Wheel, and cam means "for disengaging the said. pawl from the teeth or": the seidactchet wheel,

ii. In ith (iii the operation being; ident itueticisi .cnntecl selv iccl' by the platen shift mechanism,

cr or projection on the said frame in posi "ion to engage and displace the said bell crsnlr upon depression of the frame, espring for returning said hell crank to its normal iosition, and earn means for throwing the Mid pawl out of engagement with the teeth of said ratchet- Wheel, and then throwing said hell crank out of the path of said finger or projection,

3. In a Writing machine, the combination with a frisket and a pitmen connected to nd adapted to elevate vsaid friskct, of a lever connected to said pitmen and having 9, care face thereon, a pin mounted in en-, gageinent with said face, means. actuated and means actuated by the type-her actuating mechanism for depressing said pin lio elevate the said lever to bring the frislrct to proper printing position,

4;. .ln a Writing machine, the combination th e :frisket, of a lever connected to and adapted to shift said frisket and having a cam surface, s pin connected toend shifted by the platen shift mechanism and engag-. ing said surface, a. depressible framelocated beneath the hey bars, a lever overlapping said frislret shift lever, having a notch therein engaging the said pin, and suiteble pivotal connection between thefdepre'ssible frame and the last named lever] in at writing rhachine, the combination with e t'rishet, of a frisket shift lever havin cam surface therein, a second lever seid lrishet shiftlever hevini; 1 00 nerch therein, 2 pin connected to the platen shift mechanism and engaging the cam surface end the notch in the second lever, a denressihle trance located beneath the key hers, c hell crank lever pivotally nc-tinted ediscentthe second lever, an anti-friction roller mounted on the hell crank lever, c

in said second lever engaging sea a rrie icn roller, and link connecting sn hell crank lever to said dcpressllole 11o Efrem G, In Writing with s-"Erislret, of a frisket chin surface, connection and. said lever, a crack tee machine frame to which said fr-isket, hilt lever is rhvcted, e cam le ver overlap ping said frislr't shift lever and pivoted to the said 'Ereme, a bell crank lever also plvot- I ed'to the said bracket, en antifriction roller 120 carried by said hell crank lever and engaging e notch in the said cam lever, adepressihie lrenie located beneath the key hers, and link connecting the hell creme lever to the said iiirarneai I 7. in e machine of the character described, the comhinethin with the ribbon spool, a shaft for said spool, a ratchet for i i. shelt and a universal her, or :1 horizonhell creel; lever, a pawl carried by said 13D means under control of actuate said frisketshifting lever.

brator actuating levers having substantially parallel arms,

bination of said IllllX'Gl'Sl-l bar and vibrator, a connection between said angular levers, a platen, platen shitting means, and means under control of the platen shifting means for shifting said connection relatively to said levers.

15. In a .typewriting machine, the combination of a ribbon vibrator, vibrator actuating levers having substantially parallel arms slotted longitudinally thereof, a-connecting device engaging the slotted parallel arms of said actuating levers and movable longitudinally of the slotted arms, and means lever, an antifrict-ion device on said lever, and a downwardly depending arm operated by the universal bar to engage said antifriction device and actuate said lever.

8. In a machine of the character described, the combination with the ribbon frisket, a frisket actuating lever having a cam surface, a stud for engaging said sur face, typekey actuated means for displacing said stud in one direction, and means for displacing said stud in another direction to 9. A ribbon mechanism for type-writing machines comprising a shiftable ribbon support, means including adjacently disposed cam members and an interposed roller for actuating said support by character printing keys, at key independent of said printing keys and connections controlled thereby and operatively connected to said cam roller to adapt the support actuating means to different ranges of action preparatory to printing.

lOQA ribbon mechanism for typewriting machines comprising a shiftable ribbon support, support actuating means including relatively movable members provided with adjacent cam surfaces, character printing keys operatably connected to one of said cam members, a cooperating member intervening said cam members -and normally movable therewith, a key 'other than said printing keys 'operatablv; connected to said intervening member, the-last said key being movable transversely to said normal move- 'ment, to vary the initial position of the ribbon preparatory to printing. a 11. In a typewriting machine, the comb nation of a ribbon vibrator, two ribbon v1- device longitudinallv of the slotted arms of said levers.

16. In a typewriting machine,'the combination of a ribbon vibrator, vibrator actuating levers having substantially parallel arms slotted longitudinally thereof, a connecting device engaging the slotted parallel arms of said actuating levers and movable longitudinally of the slotted arms, a platen, a platen shifting means, and means under control of said platen shifting means for effecting a movement of said connecting device longitudinally of the slotted arms of said levers.

17. In a typewriting machine, the combination of a ribbon vibrator, two angular actuating levers each having a substantially horizontally disposed arm and a substantially vertically disposed arm, asubstantially vertically shiftable connection between the vertically disposed arms of saidangular levers, an chmeans for shifting said connectiorr. -18.' In a typewriting machine, the combituating levers each having horizontally disposed arm and a substantially vertically"disposed 'arm, a substantially vertically shiftable connection between the vertically disposedarms thereof, means for shifting said connection, a platen,'platen shift-ing means, and means under control of the platenshifting means for shifting said connection relatively to said levers.

19. In a typewriting machine, the combination of a shiftabl'e platen, a vibratory ribbon carrier shiftable with said platen and having an unvarying normal relation therewith, an operating lever having a single ful; crum, which fulcrum has the same normal position for both positions of the platen, means for shifting said ribbon carrier through said operating lever, means comprising relat-ivelymovable parts for actuat ing said lever means for varying the relation between said parts. i

20. In a typewriting machine, the combi nation of a anism, of a vibratory ribbon carrier, a twopart operating connection, means for actuan intermediate connection between said substantially parallel arms, and means for shifting the connection relatively to said levers and longitudinally of said parallel arms.

12.. In atypewriting machine, the combination of a ribbon vibrator, two ribbon vibrator actuating levers having substan tially parallel arms, an intermediate connection between said substantially parallel arms, a platen, platen shifting means and said platen shifting means for shifting said connection longitudinally of said substantially parallel arms.

13. In :a typewriting machine, the combination of a ribbon vibrator, a universal bar, intermediate angular levers between said universal bar and vibrator, said angu-' lar levers being mounted on fixed axes, a connection between said angular levers, and means for shifting said connection relatively to said levers;

14. In a typewriting machine, the coma (ribbon vibrator, ,a universal bar, intermediate angular levers between for eltecting a movement of said connecting.

at printing operations, and

ating said connection at printing operations,-

platen and platen shifting mechand. means connected with said platen shifting mechanism and operative thereby to vary the relation between the two parts of said connection.

21. In a typewriting machine, the combination with a platen and platen shifting mechanism, of a vibratory ribbon carrier, an operating connection comprising .tWo parts jointed together, means for constraining said parts to move as one piece in a plut'aiity oi fixed relations depending on the shift position of the platen, and means for actnnting said parts as one piece at printing operations.

innate;

tive by said platen shifting mechanism tochange the relationship between the jointed parts of said connection.

JEROME B. SECOR.

Witnesses:

J. P. CLARKE, Gno. H. PATTERSON.

Gnnte n at this patent may he obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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