US1412637A - Typewriting machine - Google Patents

Description

R. W. UHLIG.

TYPEWRITING MACHINE. APPLICATIONI HLED JUNE 20, 1911- RENEWED SEPT. 9| 1921 Lmgwn y, www@ Apr. u, 1922.

4 SHEETS-SHEET l. y'

R. W. UHLIG. `IYPEWRI'HNG MACHINE. APPLICATION FILED IuIIEzo. 1917. IIEIIEWED SEPT. 9. IszI.

Patented Apr. M, 1922.

4 SHEETS-SHEET 2.

` R. W. UHLlG. TYPEWRITING MACHINE. APPLlcATloN P1150 JUNE zo, 1911. 11ENEwEDsEPT.9,1921.

1941296370 Patented @1.1111922 4 SHEETS-SHEET 3.

I Q m i 1 N R. W. UHLIG. TYPEWRITING MACHINE. APPLICATION FILI-:D IUNE 20, 191?. RENEINED SEPT. 9,192I- Lmgyo l Patented Apr. u, 1922.

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IIII Il 'auf mennen w. entre, or aitLiNe'roN, New JERSEY, AssroNon. ro ALLEN rvrnwni'rnn ooivirANY, or ALLENTOWN, rnNNsYnvANra, a oonronarrion or PENNSYLVANIA.

TYPEWRTNG- MACHINE.

inlener;

Specification of Letters Patent.

Patented Apr.. 11, i922.

Application filed .Tune 20, 1917, Serial No. 175,829. Renewed September 9, 1921. Serial Ilo. 499,548.

To @ZZ 'whom t may concern:

Be it known that l, RICHARD' V17. UHLIG, a citizen of the United States, and a resident of Arlington, inthe county of Essex and ft te of New Jersey, have invented certain new and useful improvements in Typewriting Machines, of which lthe following is a specification.

This invention relates to typewriting machines and particularly to typewriting maohines in which the type strike rearwardly against the front of a platen, the platen being rotatably carried by a carriage which is shiftable upward and downward to support the carriage with the writing line of the platen which is in a plane in line with the axisof the platen in dierent planes, and it is the object of the invention to provide improved means to support the platen carriage in the normal writing position and to shift said carriage above the normal ff'riting position and releasably lock it in such position.

lt is another object of the invention to provide improved carriage shifting means to shift the carriage above or below the normal writing position and to releasably look it Ain either of such posit-ions.

ln the drawings accompanying and forming a part of this specification Figure 1 is a sectional side elevation of a typewriting machine illustrating an embodiment of mylinvontion with the partsin position to support the platen in normal writing position, only euclf parts of the typewriting machine being shown as are essential to an understanding of the invention.

Figure 2 is a view similar to Figure `1 but showing the parts in position with the carriage shifted upward with the platen above the normal writing position.

Figure 3 is a view similar to Figure 1 but .showing the parts in position with the carriage shifted downward with the platen below the normal writing position.

Figure 4 is a sectional front elevation the section being taken substantially on the line L1-4L of Figure 1.

Figure 5is a detail of theV means to limit the upwardA and downward movement of the platen carriage.

Figure 6 is a detail front elevation showing the manner of slidably mounting and guiding the carriage support in the framework, the framework being shown in sec-` tion; and

Figure is a detail plan view to showthe manner of 'locking the levers to shift the platen carriage to maintain the carriage in shifted position.v

Similar characters of reference designate like parts throughout the different views of the drawings. i

ln the embodiment of my invention shown in the drawings the operative parts are carried by a framework, designated in a general way by F, adapted to be supported upon feet 8. A carriage 9 rotatably supports a platen 10 and has a pair of longitudinally extending bars 11, 12 the inner edges of which have longitudinally extending V- shaped grooves 13. The carriage is mounted to have to and fro movement upon a support comprising a rectangular frame 14 having V-shaped grooves 15 in its front and rear edges to constitute with the grooves 13 in the carriage barsr 11', 12 raceways for balls 16. Fixed to the opposite ends of the supporting frame 14 are racks 17, 18 slidably engaging in guideways 19 in the framework and guideways 20 in supporting brackets 21 for the feet 8 fixed to the framework, and with which racks pinions 22, 23 mesh, said pinions being fixed to a shaft 2-1 journaled at its ends in the side members of the framework. Springs 25 connected at one end to the framework, as at 26, and to forwardly extending fingers or hooks 27 secured to the bottom of the carriage supporting racks operating to counterbalance the weight of the platen carriage and its support.

The carriage` support is maintained in normal writing position, as shown in Figure 1, by a toothed segment, which is in the nature of a double segment, rotatable with the pinions '22, 23, and shown as comprising a wheel or disk 28 fixed to the shaft 24 adjacent the pinion 22,7said wheel having equidistantly spaced pins, shown as three in number, to extend laterally from opposite ides of the wheel, as shown at 29 and 30. ln normal writing position of the carriage support the pin at the extreme right of the shaft 24, as viewed from 'Figure 1, Aabuts against the top of a tooth 31 at the end of a toothed portion 32 at the right of the wheel 28, as viewed from Figure 4, 'said toothed portion being formed at the rear end of a lever 33 pivotally supported, as at 34, in a transverse slot of a cross bar 39 and having a linger key 35 at the forward end. The top of the tooth 31 is in the form of an 'arcof a circle whose Center is in the pivotal support of the lever 33, for a pur'- pose to be hereinafter described. 1n this position of the carriage support the projecting portion 30 of a pin atthe left of the shaft 24 asviewed from Fignre 1 also abnts against the top of a tooth 36 of a toothed vportion 37 `formed at the rear end of a lever 38 and located at the left of the wheel 28 als viewed from yFigure 4, said lever being pivotarllysupported at 4() in a vslot ofthe cross bar 39 and having a finger key 41 .at its 'forward end. The top of this tooth 36 is also in the form of an arc of a circle whose center is in the pivotal support of the lever 38. The levers 33 and 38 are maintained in the Figure 1 position with the ends of the levers forward ofthe pivots 34, 40 in Figure 2,V the normal writing position of` the platen being shown in dotted lines in this figure, as for instance, to write capital .lettersfor the like, the forward end of the lever 35 is depressed by applying pressure to the linger key 35, as shown in Figure 2, thereby elevating the sector 32, the sector having. a slight free movement until the tooth 31 rides off of the pin 29 and the latter is engaged by the next `tooth 31 and thereby rotate the wheel'28 in thel direction lof the arrow (Figure 2) and therewith the shaft 24 and pinions 22, 23, the latter meshing with the racks 17, 18 moving said racks with the frame 14and platen carriage up-A ward, the upper movement of the carriage vsupport being limited by stops 60, consisting of the laterally bent upper end of a plate 61 secured to the racks, k17, 18,-engaging with the upper end wall of slots 62 in thesidemembers of the framework, the carriage support being supported during this movement by the engagement of the portion 29 of the pins with the tooth 31, as clearlyv .shown in Figure 2.

Tovlock the carriage support inits upward shifted position there is provided a slide 47 lsupported adjacent its opposite ends Y in the framework, as at 48 and 49, to have a limited rearward and forward movement, therrearward movement being limited by a shoulder 50 engaging with the framework,

and the forward movement being limited by a pin 5 1 engaging with a transverse memT ber-at the front of the framework, the slide being normally maintained in its forward v Vspring 52, which movement may be imparted to the slide by the thumb of the same hand by a finger of which, the lever 33 is der pressed, a hook or latch 53 formed on theV slide will engageover a Ypin.54 extendingv laterally from the lever 33, as shown in dotted lines in Figure 2, .the pressure of the v spring 43 on the lever at the opposite side of its pivot support retaining the pin in engagement with the latch 53 and the platen carriage supported inielevated position. To release the lever 33 from the slide latch 53 to permit the carriage support to. again assume its normal writing position shown in Figure 1, or the platen in thel dotted line position shown in Figure 2, pressure' is applied to the finger key end of the lever 33 relieving the pressure of the ypin y54 on the slide latch 53 when the slide will. be returned by the spring 52 to the full line position shownin Figures 1, 2 and `3, and as pressure is released vfrom the finger l'key the leverx33 will be returned to the Figure 1 .position by its spring 43 and thereby the'carriage support to the normal writing position as shown in Figure 1. c

To shift the carriage support so that the writing position of the platen will be below the normal writing position, or from a position as shown in Figure 1 to theposition shown in Figure 3, or from the dotted line position of the platen shown in Figure' 3, as, for instance, to write numerals and other characters, the finger key end of the lever 38 is depressed against the action of its spring 44 thereby lifting the toothed level` end 37, said end having a slight Yfree movement until the tooth 36 rides off of the pin 29 and the latter is engaged bythe next tooth 36 thereby rotating the wheel'28 in" the direction of the arrow indicated in Figure 3, reverse to the movement imparted thereto by the toothed portion 32 of lever 33, and rotate with said wheel the shaft 24 and .pinions 22, 23, the latter meshing with the racks 17, 18 moving said racks with the frame 14 and platen carriage downward, the downward movement of the carriage snpport being limited by the engagement of stops 63, consisting of bending the lower ends of the plates 6] laterally, engaging with the lower end wall of the slots 62 in the side. members of the framework-,the car-v riage support being supported during this movement by the. engagement of the portions 30-of the pins w-itlithe sector 37. I

To lock thecarriage support in this Vposition with the finger ykey end of the lever 38Y depressed the slide 47 'is moved inward thereby causing a latch V57 formed on said anlass? slide to engage 'over a pin 58 extending laterally from the lever 38, said pin being maintained in engagement with said latch through the pressure of the lever spring 44, and thereby locking the carriage support with the platen in the position shown in Figure 3. To release the lever 38 and permit the return of the carriage support to the normal writing position shown in Figure l, pressure is applied to the finger key end of the lever 38 relieving the pressure of the pin 58 on the slide latch 5? when the slide will again be returned to initial position by the spiing 52. j

l'lariations may be resorted to within the scope of my invention, and portions-of my improvements may be used without others.

Having thus described my invention, l claim:

l. 1n a typewriting machine, the combination with framework, of a platen carriage support including a vertical rack adjacent opposite ends thereof slidablyengaging guideways in the framework to have av limited up and down movement; arotatable shaft; pinions on said shaft tomesh with the racks; and a Vdepressible lever having a finger key at one end and the opposite end arranged'to co-operate with means on the shaft to maintain the shaftagainst rotation and the platen carriage in normal writ-ing` Position, and adapted to impart rotative movement to the shaft upon the depression of the lever tochange the writing position of the platen carriage.

2. 1n a typewriting machine, the combination with the framework, of a platen carriage support including` a rack adjacent opposite ends thereof slidably engaging guideways-in the framework to have a lim'- ited up and down movement; means including pinions to mesh with the racks operable to impart movement to the racks and carriage support; lever mechanism arranged to co-operate with said latter means to hold the pinions againstk movement' and thevcarriage support with the platen innormal writing position, and operableto actuate said means to rotate the pinions and thereby shift the carriagewith the platen to another writing position for the purpose specified.

3. ln a typewriting machine, the combination with the framework, of a platen carriage support including a rack adjacent opposite ends thereof slidably mounted in the framework; pinions to mesh with the racks; lever mechanism arranged to coi-opcrate with means rotatable with the pinions to hold the pinions against rotation and the platen carriage support in normal writing position; and means to co-operate with the lever mechanism to lock the samein 'position with the carriage support in lposition with the platen above or below ythe normal writingposition for the purpose specified. i,

riage; a support therefor a. ln a typewriting machine. the combination with the framework, of a platen carriage support including a rack slidably engaging a guideway in the framework; a pinion to mesh with said rack; a wheel having laterally projecting pins rotatable with the pinion; and a depressible lever having a. toothed portion at one end to co-o'perate with the pin wheel to lock said wheel and pinion against movement and maint-ain. the rack with the platen carriage in norma writing position, and the depression of tln4 end of said lever opposite the toothed portion causing said toothed portion to co-operate with the pins of the wheel to rotate the same and connected pinion to impart movement to the rack to shift the carriage to another writing position for the purpose specified.

5. In a typewriting machine, the combina tion with the framework, of a platen carincluding a rack engaging in a guideway in the framework to have a limited sliding movement; a pinion to mesh with said rack; a wheel having` laterally projecting pins connected to the pinion to rotate therewith; and a depressible lever having a linger 'key at one end and a toothed portion at the opposite end with which one of the wheel pins co-operewtes to lock the pinion against movement and maintain the rack with the platen in normal writing position, the depression of the linger key end of the lever causing the toothed portion to cooperate with the wheel pins to rotate the wheel and pinion to impart movement to the rack to shift the position of the carriage, substantially as and for the purpose specified.

6. 1n a typewriting machine, the combination with the framework, of a platen carriage support including a rack slidably engaging in a guideway in the framework; a

pinion to mesh with said rack; a wheel having laterally projecting pins connected to the pinion to rotate therewith; a depressible lever having a finger key at one end andy a toothed portion at the opposite end with `which one of the wheel pins co-operates to lock the pinion against movement and maintain the rack with the platen carriage in normal writing position, the depression 'of the lingenkey end of the lever causing the toothed portion to (zo-operate with the wheel pins to rotate the wheel-and pinion to impart movement to the rack to shift the position of the carriage; a pin projecting laterally from the lever and a notched slideV to cooperate with the lever pin projecting from the lever to lock the lever in depressed position and the carriage in shifted position, substantially as Vand for the purpose specified. j n

7. ln a typewriting machine,` the combination with the framework, of a platen carriage support including a rack engaging a guideway in the framework to have a limited up and down movement; a pinion to `mesh with Said rack; a wheel having pins pro-v jecting laterally. therefrom rotatable fwith the pinion; .a pair of depressible levers eachY arranged with a toothedend to co-o'perate with the wheel pins to hold said wheel and pinion against movement and thereby the platen carriage vin normal writing position,

" the depression of one of said Vleversoperating to cause the connected toothed portion to co-operate with the pin wheel to rotate the wheel and pinion in one direction `to impart movement to the rack and move the platen abovev the normal writing position,` and the depression of the other lever operating to iotate the wheel and pinion in reverse direction to. impart downward move- '.mentto the rack and move the platen below the normal writing` position'for the purpose specified.

' .8. In a typewriting machine, the combination with the framework, of a platen car- -riage support including a, rack at opposite ends slidably engaging guideways in the framework, pinions to mesh with said racks; a wheel, rotatable with the pinions having pins projectinglaterally from opposite sides thereof;v a pairv of depressible levers, eachlever having a toothed portion to co-operate with the wheel vpins to lock the latter andV the pinions against movement and maintain the racks with the platen carriage in 'normal writing position, the toothedl por-A tion of vone lever upon the Vdepression of the lever co-operating with the wheel pins to rotate the wheel and pinions in one direction to move the racks and the platen above the normal writing position, and the toothed portion of the other lever upon the depression of said lever co-operating with the wheel pins to rotate the wheel and pinioiis in reverse direction to` move the racks in opposite direction and the platen below the normal writing position; and means to releasably lock either one ofsaid levers in depressed position for the purpose specified.

`9. lna typewriting machine, the combina- .tionwitli the framework, of a platen carriage; a support therefor including a rack engaging in a guideway in the frameworkf to have a limited up and downr movement; a pinion to mesh vwith said rack; a wheel to rotate with the pinion; pins extending from opposite sides thereof; a pair of depressible levers, each lever having a finger- 'key at one end and a toothed portion at the opposite end with which the Wheel pins (3o-operatev to lock the pinion and rack against movement with the platen in normal writing position, said toothed portions upon the depression of the levers co-operating with the wheel pins to impart movement to the wheel and pinion and move the rack and the platen. above or below the normal writing position, substantially as and `for the purposesp'ecitied. j 1 f l0. ln a typewriting machine, the combination with the framework, ,of a :platen carriage; a support therefor including a rack engaging in a guideway in theframework to have a limited up and down movement;ra pinion to mesh with said rack; a i,

ins at one sidey the platen above the normal 'writing posii tion, and the depression ofthe other lever causing its vtoothed section to co-operate with thepins at the opposite side lof the wheel to rotate the wheel and. pinion in -reverse direction andiinpart downwardmovement to the rack and move the platen below the normal writing position, substantialhT as andy for the purpose specified.

ll. In a'typewriting machine, the conibination with the framework, ofa platenV carriage; a support therefor, including a rack engaging in a guideway in the frame-Y work to have alimited up and down movement; a pinion tomesh with said rack; a wheel to rotateV with the pinion; pins tending from opposite sides thereof; a pair of depressible levers, each lever having a finger-key at oneend and a toothed lportion at the opposite end-with which the wheel pins co-operate to lock the pinion.

and rack againstmovement with the platen in vnormal writing position,r said toothed portions upon the depression of the lingerkey end of the levers co-operating with the wheel pins to impart movement to the wheel and pinion and move the rack and the vplaten above or below the normal writingposition; pins projecting laterally from the levers, and a notched slide to co-operate with lever pins to lock either of said levers in depressed position with the rack raised or lowered and the platen either.

above or below the normal writing position, substantially as and for the purposey specified.

V12. In a typewriting machine, the combination with the framework, of a platen carriage; a support therefor including a rack engaging in a guidewayin the framework to have a limited up and down movement; arpinion to mesh with said rack; a Wheel'to rotate with'. the pinion; pins extending from opposite sides of the Wheel;

a pair of depressihle levers, each .lever having a linger-key at one end and a toothed portion at the opposite end with which the wheel pins co-operate to lock the pinion and rack against movement with the platen in normal writing position, the depression of one of said levers causing the toothed portion thereof to co-operate with the pins at one side of the wheel to rotate the wheel and pinion and impart movement to the rack and ymove the platen above the normal writing position, and the depression of the other lever causing its toothed portion to co-operate with the pins at the opposite side of the wheel to rotate the wheel and pinion in reverse direction and impart downward movement to the rack and move the platen below the normal writing position; pins projecting laterally from the levers; and a spring influenced slide having a pair of notches to co-operate with pins extending from the levers to lock either of the levers in depressedv position with the rack raised or lowered and the platen either above or below the normal Writing position; said slide being,` releasaole from the lever pins through the influence of its springby depressing the levers, substantially as and for the purpose specified.

Signed at New York city, in the county of New York and State of New York this 9th day of June 1917.

RICHARD W. UHLIG.

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