US1284055A - Type-writing machine. - Google Patents

Description

f. o. uampei. xcuw, ,TYPE WRITING MACHINE.

APPLICATION FILED fes. 2L 1911.

L@ Paemea Nov. 5,1918,

55m@ (i @W @ma UNITED sra'rns earner LEE s. BURRIDGE, DECEASED. LATE or NEW YORK. N. Y..A BY riTnoIsoBoRRIDGE, y

EXECUTOR, OF NEW YORK, N. Y.. ASSIGNOR, BYv MESNE ASSIGNMENTS, 'TQ UNDER- WOOD TYPEWRITER COMPANY, OF NE WARE.

Specification of Letters Patent.

W YORK. N. Y.. a CoRPonAirroN for DELA- PatentedNotnj'i1918.

originai application med'seprember 3o, i915. serial No. 53,220. Divided and this application sied'rebruary i 27, 1917. Serial No. 151,173. t'

To all chal/rit may concern:

Be itl known that Les S; BtunrDoE, cleceased, late a citizen ot' the United States, and late residing` in the. borough of Manhattan, county, city, and State ot New York,

invented certain new and uset'ul improvements in Type-lriting Machines. of which the following is a specification.

The present invention relates toribbonvibrating mechanism tor tvpewriting machines. More partieularlv the invention relates to mechanism, ot' this character, in a,

typewriting machine in which the platen is f bar, on the main trame. operable at typestrokes; the vconnection being texible or capable of accomn'imlating itselt to the ditierent vcase-lwsitions ot the platen traine, so that the ribbon mechanism need at no time be disconnected trom the universal bar. A feature ot' the invention is the construction and manner ot' shifting the platen trame., whereby the proper relations ot the ribbon n'ieehanism to the platen are maintained in all ease-positious of the platen, without. oomA plicated parts or movements.

One ot the lobjects ot' the invention is a simple and novel ribbon-vibrating mechanism. shiftable with the platen between two or more oase-positions; and. in all case-positions. being;r adjustable. to elt'ect a variable throw ot' a biehrolne ribbon. so that one or another of the eolor zones thereot may be presented to the printing point at the typestrokes; or so that the ribbon may be maintained 'silent at type-strokes, for stenC-iling. A feature of this mechanism is the, manner in which thel ribbon vibratorl is supported for oscillation at type-strokes. and in which this support. is adjustable relatively tothe vibrator to shorten or' lengthen ,the eli'ective 'by the latter at type-strokes.

ln a preferred torni oit' the invention, the

platen vframe is shittable substantiallr rectlllnearly between case-positions, so that theV platen andA the ribbon-vibratingnmechanisin both have practicallv the`saineniovexnent, and maintain their relative positions.v On the main frame ot' the machine is a rook shaft, connected to the universal bar, to be rocked vPivot-ally mounted on theV shit'table traine are two le vers Connected by links toxarnis onthe ri f shaft.` These links form a pernianent and flexible connection between the ribbon meshanism on the platen frame and the universal bar on the main trame.; because. when the platen is shifted, the link merely rocks to another angular position or setting. There are. as usual. two ribbon spools,and each lever actuates a pawl and ratchet,meehanism at one ot' the spools. for turningthat spool.'

The pa wl` and ratehets are arranged to drive the two spools inopposite directions, and hence. according` to the direeti'on otteed of the ribbon. vwhen one meehanisnr operative, the other is inoperative. f

One ot' the two levers operatesthe ribbonfeeding` ineehanisins land `said lever isA also linked to the ribbon-vibratino,ineeiianism to operateiae latter. The vibra gmeehanism comprises a ribbon-carrier in the,V torni of a vibratorv arm through which the `ribbon is threaded. and this armis linked to an oseilatory plate. rl`he link t'rom lthe ribbonteeding lever carries a pin in a Slot in the oscillatory plate, and this pin is linked to another pin in the same slot-.,whichlatter pin serves as the pivot onwuhoh the plate oscillates. The plate isfsu'pported and guided in its oscillatory movementsby a pinH 1n another slot in the plate; and this rsupthe printing point. Another shift of the supporting pin removes the pinl on the link which oscillates the plate from the slot in the latter, so that, when stencilng is to be done, the late and ribbon-carrier are silenced.

T is application is a division of applica- 'tion No. 53,220, iled September 30, 1915 (patented December 4, 1917, No. 1,249,022).

Other features and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a top plan view, partly broken,

"of the ribbon-vibrating mechanism, and of ribbon-vibrator, and of its connections to the ribbon-carrier, and to the lever by means of which it is actuated.

The platen 10 is journaled in a frame 11 which has letter-feed and' return movement on a frame 12. The frame 12 is connected to the 'main frame 13 by links 14 at each side thereof, and is shiftable up and down thereon between case-positions, of which there may be three, as shown and described in my co-pending application for Letters Patent, Serial No. 52,594 filed September 27th, 1915.

The type keys 15 are on levers 16 ulcrumed Each typekey is held Von a bladel 17 carried by the main frame. to its fulcrum, and is also returned to normal position after each operation thereof, by' a spring 18 which is attached at one end to a 'finger 19 on the key lever and at the other end at 20, to the rear of the key lever, and which is bent over a plate 21 on the main frame, so that the spring, in tending to straighten itself, exerts an upward pressure on the key lever. A plate 22 also restricts movement of the key levers away from the blade 17. The key lever operates in a slot 23 in a front plate 24 of the main frame; and the upper and lower walls of the slot determine the throwv and normal position of the key lever. Each type key lever has a shoulder 25 thereon, adapted, upon depression of the key, to engage and depress a universal bar v26 pivoted at 27 in yarms '28.,on the main frame. A suitable spring (not shown) returns the universal bar to normal position when the key is released, and a suitable stop (not shown)'determines the normal position lof the universal bar and other parts connected thereto.

To ears 30 on the side plates 31 of the shiftable platen frame 12, are secured cups 32, one at each side of the machine, to receive the ribbon spools 33 and 34. Journaled in ears of brackets secured to the side plates 'i 31 of the platen frame, are shafts 35, onto each of which one of the spools is adapted to be placed for rotation therewith.

Fast to each shaft 35 is a hub 40 'secured to a ratchet wheel 53, by means of which the spool. is turned step by step at type-strokes. Loose on each shaft 35 is an arm 54; and pivoted to the end of the arm 54 is a pawl 56, held resiliently in engagement with the teeth of the ratchet wheel by a spring 57, for turning the ratchet wheel when the arm 54 is vibrated. Pivoted to the base of the cup 32 (see Fig. 1), and held resiliently to the ratchet wheel by a` spring 58, isa pawl 60 for holding the ratchet wheel when the vpawl 56 is returning to normal positie after each feed.

Each arm 54 has depending therefrom a 'pin 61 which lies between two prongs 62, offset horizontally on the end of a lever 63, pivoted at 64, at an intermediate point thereof, to the bracket ear. Pivotally connected to the lower arm of eachlever 63 is a link 65, the other end of which connects to an arm 66, fast to a rock-shaft 67, journaled in bracket arms 68, which are secured to a cross plate 69 of the main frame near each side thereof, (see Fig. 3). Also fast to the shaft 67 is an arm 70, connected by a link 71 to the universal bar' 26. Depression of the universal bar by a type key therefore rocks theshaft 67, to throw the links and rock the levers 63, thus edecting a one-step lleed of the ribbon. The universal bar, in returning to normal position, also returns the levers 63 and pawl-carrying arms 54- to normal position. A preferred means for connecting the link 65 t0 the lever 63, and one which permits of ready separation and 'union ofthe two, is shown in Fig. 3, comprising a' pivot and spring on the link 65. It will be noted that the link 65 4maintains the connection of the arm 66, on the main frame, to the lever 63, on the platen frame,

in all case-positions, and during the shift l ot the latter. A shift of the platen frame merely causes the lever 63 and link 65 to assume a different angular position, and the pawlr56 to be moved slightly to a diiierent set position on the ratchet wheel: the-operation of they parts at type-strokes is not changed. The ribbon may` be fed in either direction; and the direction of feed may be reversed when desired.

Between the spools, and just to the left oi' a type guide 84 on the segment 85, at printing point, the ribbon is threaded through an eye or slot 86d in a carrying arm 86,. At the right of the printing point, the ribbon is held and guided between two spring clips 87 and 884 secured to the platen frame. clip '88 may also serve asa paper guide. 'lhr carrier 86 is vibrated at type-strokes, (ei- The i cept in stenciling), to present the ribbon to the printing point, and thereafter to return it to a normal position below the printing point. The carrier is shown as a strip of sheet metal turned on itself to have a part S9, by means of which it is braced for rigidity. The carrier is on a pivot pin 90 held in ears on a b 'acket 91 secured to the left-hand side plate 31 of the shiftable platen frame. lts pointI of support thus maintains the same. position with respect to the platen in all case-positions of the latter. The normal, or non-printing, position of the carrier, (shown in full lines in Fig. 2), is determined by contact of a stop finger 92 on the carrier against the rside plate of the platen frame. For shifting the carrier at type-strokes, to the dotted line position in Fig. 2, to present the ribbon lto the printing point, there is a link '93, one end of which hooks into a hole S01 in the carrier. and the other end of which connects with a vibratory plate 91 on a bracket arm 95 secured to a cross plate 90 forming part of the shiftable platen frame. The bracket arm 95 may also be braced from the side plate 31 of the platen frame by a strip of metal 97T. rll'he plate 91. is slotted at 9S to engage a pin 99 on the bracket 95; and pivoted on the pin 99 is a link 100, pivotally connected by a pin 101 to a link 102. lVhen the parts are set for printing, as distinguished from stenciling, the vpin 101 also lies in the. slot 98, so that reciprocation of the link 102 causes the plate 91 to be rocked, (for example, between the full and dotted line positions of Fig. 41), thereby causing the carrierto be moved up and down with the riblt pin 103 on an arm 101 pivoted to he bracket 95, by engagement with another slot 105 in the plate 91, controls and guides he plate 91 in its vibratory movements. 'he link 102 is pivotallv connected at 100 to toe lever 03 which operates the ribbon-feeding mechanism, and which, it will be reinembered, is connected to the universal bar 26 to be vibrated by the latter at type strokes.

fihis connection, it will also be remembered.

maintained in all oase-positions of the into a slot 109, which, in this position of the plate, will extend in the direction of reciprocat-ion of the link 102. Reciprocation ot' the link 102, when the plate 91 is so shifted. resultsl in back and forth movement of the. pin 101 in the slot 109 without vibration otthe plate 91 or of the ribbon carrier; and the parts are thus set in so-called neutral position for lstenciling. If, on the other hand. the linger lever 10T is moved tothe left from Fig. 1 position, the pin 103 will cause the plate 91 to bev lifted, and at the same. time shifted angularly to the left. leaving both pins 99 and 101 in the slot 98, but with a longer arm from the pin 101 to the point of connection of the link 93 to the plate, and also providing for a greater angular-throw of the plate 94 when the latter is vibrated. This last setting of the plate 91 therefore provides for a greater movement of the ribbon carrieA at type-strokes than when the parts are set as in Fig. 4, and is the setting for printing from the red Zone of the ribbon. The Fig. 1 setting is the setting for printing from the black zone of the ribbon.

For locking the plate 941 in any of its settings, the nger lever 107 has an extension 110 with three recesses 111%", 1111, and 111Il iu its edge. Adapted to engage the part 110 in any one of these recesses,accoiding to the angulaiposition of the lever 107. is a pin 112 carried by an arnrll, pivoted at 114 to the bracket 95. A spring 115, connecting the. arm 113 to the bracket 95, holds the pin 112 in whichever of the recesses it registers with, and prevents accidental displacement of the lever 107 and plate. 94. The pin 112 is cammed outl by the teeth when the lever 107 is thrown to re-set the plate 94. f

All parts of the ribbon-Vibrating mechanism, and of the mechanism for setting the ribbon for different` colors, and for stenciling, are seen to be carried by the shiftable platen frame, excepting only the connections from the lever 63 to the universal shaft; and even these lastconnections are at all times n'iaintained unbroken. A shift of the platen frame, as pointed out, changes the angular position of the lever 63,41nd 1n so doing shifts the. link 65 somewhat; and the link 65 in shifting, may change somewhat the settingl of the plate 94. This last change is not sufficient, however, to affect the described operations of the mechanisms at` type strokes. .l

y said' pin and carrying a seco-nd pin in said slot, ineaus connected to'said link for oscil lating the saine. means t'oi' supporting the plate with the pivot piiiin desired position in said slot during oscillation thereof', and a ribbon carrier connected to said plate.

2. n a typewriting machine, an oscillatory plate slotted radially with respect to its pivotal point, a pin which progects into said slot and serves as the pivot on which the plate oscillates, a link adapted to be rocked on said pin and carrying a second pin in said slot, means connected to said link for oscillating thel saine, a third pin for supporting the plate in position on its pivot pin, the

plate having a second slot to receive the snpporting pin and to permit ot' oscillationot the plate thereon, and a ribbon carrier con'- nected to saidA plate. f

3. In a typewriting machine, an oscillatory plate slotted radially with respect to its piv- .otal point, a pin which projects into said slot and serves as the pivot on which the plate oscillates, a link adapted to be rocked on said pin and carrying a second pin in said slot, means connected. to said link for oscilllating the same, ineans tor supporting the plate with the pivot pin in desired position in said slot during oscillation thercot, a ribbon carrier connected to said plate, and Ameans for shitting the plate toa setting in which said second iin is out ot' said slot, so that said link may )e rocked without movement ot the plate and ribbon carrier.

^ Jr. ln a typcwriting machine, an oscillatory plate slotted radially with respect to its pivotal point, a pin which projects into said slot and serves as the pivot on which the plate oscillates,l a link adapted to be rocked on saidipin and carrying a second pin in said slot, means connected 'to saiil'link tor oscillating the saine, means tori supporting the plate with the pivot pin inl desired position in said slot during oscillation thereof, a ribbon carrier connected to said plate, and means for shifting the plate to .cause said second pin to leave said slot and enter a Slot transverse thereto, so that said link may then rock at type strokes without moving the plate and ribbon carrier.

5. In a typewriting machine, an oscillatory plate slotted radially with respect to its pivotal point, a pin which projects into said slot and serves as the pivot on which the plate oscillatcs, a link adapted to be rocked on said pin and carrying a second pin in said?.

slot, means connected to said link for oscillating the saine, a third pin for supporting the plate in position on itsl pivot pin, the plate having a see-ond slot to receive the supporting pin and to permit of oscillation of -the plate thereon` a ribbon carrier connected to said plate, and means tor shifting' the snpporting pin with the plate to canse said second pin to leave said first slot and to enter a slot transverse thereto, so that said link may then rock at type strokes without moving the plate and ribbon carrier. A

6L In a typewriting machine, an oscillatory plate slotted radially with respect to its pivotal pointv` a pin which pro3ccts into .said slot and serves as the pivot on which the plate oscillates, a link adapted to be rocked on said pin and carrying a second pin in said slot, means connected to said link for oscillating the saine, means tor supporting the plate with the pivot pin in desired iosition in said slot during oscillation tliereo a ribbon carrier connected to said plate, and means toi' shifting the plate to change the setting ot' said pins in said slot, so that the.

throw of the ribbon carrier at type strokes may be varied.

7. In a typewriting machine, an oscillatory plate slotted radially with respect to its pivotal point, a pin which proJects into said ""slot and lserves as the pivot on which the plate oscillates, a link adapted to be rocked on said pin and carrying a second pin in said slot., means connected to said link for oscillating the same, a third pin for supporting the plate in position on its pivot pin, the plate having a second slot to receive the snpporting pin and t0 permit of oscillation ot' the plate thereon, a ribbon carrier connected to said plate, and means for shifting the supporting pin and plate relatively to the pivot pin to change the throw of the ribbon carrier at type strokes.

8. In a typewriting machine, an oscillatory plate slotted radially with respect to its pivotal point, a pin which projects into said slot and serves as the pivot onl which the plate osc-illates, a link adapted to be rocked on said pin and carrying a. second pin in said slot, means connected to said link for oscillating the same, a third pin for supporting the plate in position on its pivot pin, the plate having a second slotl to receive the-snpporting pin and to permit ol oscillation of the plate. thereon, a ribbon carrier connected to said plate, and means for shifting the supporting pin with the plate to change the position ot' the pivot pin in its slot, s that the throw et' the ribbon carrier at type Strokes niay be varied.

5l. ln a typewriting machine, an oscilla-l tory plate slotted radially with respect to its pivotal point, a pin which projects into said slot 'and serves as the nivel. on which the i :terently located assente plate oscillates, a link adapted to be rocked on said pin and carrying a second pin in said slot, means connected to said link for oscillating the same, means for supporting the plate with the pivot pin in desired position in said slot during oscillation thereof, a ribbon carrier connected to said plate, and means for shifting the plate in one direction relatively to its pivot pin to vary the throw .of the ribbon carrier at type strokes, and in slot, means connected to saidlink for oscil' lat-ing the saine, a third pin for supporting the plate in position on its pivot pin, the plate having a second slot to receive the supporting pin and to permit of oscillation of the plate thereon, a ribbon carrier connectedto said plate, a pivoted carrierfor the supporting pin, and means for setting said carrier in dilerent angular positions to change the relative position ot the plate and its pivot pin, so that thethrovvot the ribbon carrier at type strokesinay be varied.

1l. ln a typevvriting machine, an oscillatory plate slotted radially with respect to its pivotal point,y a pin which projects into said slot and serves as the pivot on which the plate oscillates, a link adapted to be rocked on said pin and carrying a second pin, in said slot., means connected to said link for oscillating the same, a third pin for supporting the plate in position on its pivot pin, the plate having a second slot to receive the supporting pin and to permit of oscillation of the plate thereon, a ribbon carrier connected tosaicl plate, a pivoted carrier for the supporting pin, means for moving said carrier tol different Vangular positions to change the relative position of the plate and its pivot pins, so that the throw ot' the ribbon carrier at type Strokes may be varied, and a spring detcnt adapted to engage dii'- retaining means on the car. rier for the supporting pin, to lock the plate in any desired setting.

l2. The. combination with an'ibbon-cartier, of an oscillatingplate linked thereto, two` linked pivots entering a slot in said plate, means for swinging one of said pivots about', the other to oscillatethe plate, and

means for shifting said plate relatively to said pivots to vary the point to which the ribbon-carrier will be raised by the oscilla tion of the plate,

18. The combination with a ribboncar rier, ot an oscillating plate, a link between said carrier and said plate forming a togglejoint with the plate, a pivot entering a slot in said plate for operating said toggle-joint, and a pin supporting'said plate, adapted to be variably shifted to vary the point to which the ribbon-carrier will be raised.

1%The combination with a ribbon-carrier, of an oscillating plate, `a link between said carrier and said plate forming a togglejoint with the plate, a pivot entering a slot in Said plate tor operating said togglejoint, and a pin supporting said plate, adapted to be variably shifted to vary the. point to which the ribbon-carrier will be raised; said slot comprising an extension in which said pivot may operate idly.

l5. The combination with a lixed pivot, of a linlr journaled on said pivot, an oscillatf ing link, a tica-ting pivot joining said first link to said oscillating link, a ribbon-carrier, a connectin nected to said connecting link, extensions of both pivots extending into'a slot in said operating plate, and means for variably supporting said plate along said iixed pivot, to vary the point to which the ribbon carrier will be raised.

16. The combination with a. ribbon-carrier, of a slotte-d operating plate linked thereto, a fixed pivot about. which said plate mayrock entering the slot, a second pivot entering said slot for rocking said plate, moans for supporting and operating said second pivot, and means for variably supporting said plate to vary the point to Which the ribbon-carrier Will be raised.

17. The combination with a ribbon-carrier, of an oscillating plate linked thereto, a iixed pivot entering a slot in said plate, an operating pivot also entering said slot, a third pivot entering a slot in said plate, adapted to shit't said plate along the line of the other pivots, but permitting oscillation of said plate, and a finger-piece adapted to variably position said third pivot, to vary the position to which the ribbon carrier will be raised.

FRANCIS URRDGE, Eaecutor of k-Jael? wt'ZZamZ testament of Lee S. Bw'wflge, deceased. Witnesses:

ANDREW A. JOHNSON, EDITH B. "Linnen,

link, an operating plate con-

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