US1133004A

US1133004A - Type-writing machine.

Info

Publication number: US1133004A
Application number: US750514A
Authority: US
Inventors: Samuel E Carlin
Original assignee: UNDERWOOD COMPUTING MACHINE CO
Current assignee: UNDERWOOD COMPUTING MACHINE CO
Priority date: 1909-06-26
Filing date: 1913-02-25
Publication date: 1915-03-23
Anticipated expiration: 1932-03-23

Description

s. E. G ARLIN.

TYPE WRITING MACHINE.

APPLIUATIOH FILED FEB. 25, 19 13. 1,133,064, Patented Mar. 23,1915.

8 SEEBTFSHEET 1.

ITNESSS:

INVENTOB:

S. E. GARLIN. TYPE Wan-me MACHINE. I APPLICATION runflrnims, 1913. 1,133,004. Patented Mar.23,19 15.

8 SHEETS-SHEET 2.

FIG. 2.

INVENTOR:

S. E. GARLIN. TYPE WRITING MACHINE. APPLIOATIONYFIU-EDPBB.25,1913.

1,133,004. Patented Mar.23,1915.

8 SHEETS-SHEET 3.

FIG. 3..

INVENTOB:

ITN 'SSES:

I I l I I S. E. GARLIN.

TYPE WRITING MACHINE. APPLICATION FILED FEB. 2'5, 1913. I

1,133,004. 7 I Patented Mar.23,1915.

8 SHEETS-SHEET 4.

S. E. GARLIN.

TYPE WRITING MACHINE.

APPLICATION FILED 11:3.25, ma.

Patented Maf.23,1915.

MENTOR:

8 SHEETS-SHEET 5.

lll lllllilll l lvllll lilllll I a dc WITNESSES}.

mmamz? s. E. GARLIN. TYPE WRITING MACHINE.

APPLICATION FILED FEB. 25, 1913.

1,1 33,004. Patented Mar. 23; 1915.

a SHEETS-SIHBBT a.

l 7 H W 88 j l 57 f4 Q o 0 o o i i A 414 2 d7 :57 27 g FIG. 7

INVENTOR: WITNESSES; Mid/Am s. E. GARLIN.

TYPE WRITING MACHINE. I APPLICATION IILED' FEB. 25, 1913.

1, 1 33,004.. I Patented. 23, 1915.

8 SHEETS-SHEET 7. H6. 8. 1 22 INVENTOH: MW

WITNESSES:

S. E. GARLIN.

TYPE WRITING MAGHINE.

APPLICATION FILED M125, 1913.

Patented Mar. 23, 1915.

8 BHBETS8HBET 8.

wwusssgs:

SAMUEL E. GARLIN, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, 'I'O UNDERW'OOD (YOMPUTING MACHINE COMPANY, OF NEVJ YORK, N. Y., A CORPORA, TION OF NEW YORK. i

TYPE-WRITING MACHINE.-

be remade-0m a source of'pewer, and is filed June 26, 1909. A feature of this invention is the provis on of means whereby the platen can be .a "division of my application. No. 501L995,

rotated an undetermined amount either forwailly in a normal line-spacing direction or'backwardlyin a reverse directiin from a source; oh-vowel". This may be"accomplished byf the prov -isionof driving connections bet'ivengthe platen and rce of power.

' which aremet-man -"maeave but rendered active or'efl'ect'ive by the mere manipulation of one'of two levers, whereby the platen can,

be driven continuously in one direction or the (ther according to the particular lever actuated, and for an amount depending on thetime which the lever is held in its pos1-. --t1o "n corresponding to'the continuous driving connection between the 'motor and the platen. Y

"A furthe'r featui'e of this 'ention is the provision of mechanism wli reby the platen can be rotated not only for an undetermined distance but also fora plurality of predetermined line paces, and that, too. either in a normal line-spacing direction or in a reverse direction. For this purpose, the driv- "ing connection between the motor and the pla t'er'i' oan berendered teem-e at two series of: differentpoints, one seriescorresponding one direction,

This difference is obtained by providing Specification of Letters Patent.

r g-to a I'Ct'!tl011 otitherplaten in tlievoppo sitedirection. Each point'of connection in agents controls a. ditferentextent of movement'gof the platcni rammed Mar. 23-, 1915.

N 1909, Serial No. 594,595. Divided and this appiication filed February 25, Serial No. 750,514.

in aseri'es differs from its fellows in the number of teeth. which ithas, the difference being arranged successively, starting with a. mutilated gear of one tooth and continuing through mutilated gears of two, three, four and live teeth, corresponding to the same number of line-space movements of the platen. 4

A still further feature of this invention is to provide. a sel'ectivemeans for controlling the e'ltectiveness of the drive from the motor to the platen at a point other than those above mentioned. This is accom' plished by havingthe train of driving connecticns normally inactive at a point intermediate the controlling mechanism and the platen but manlpulated by a key at the key-j board to bring about an effective connection.

Other features and advantages will hereinafter appear.

In the accompanying drawings Figure 1 is a front view in elevation. Fig.2 is atop plan view. Fig. 3 is a skeleton planIviw with some of the superposed parts removed to show the underlying structure. Fig.4 is

a vertical section taken from front to rear of the machine. Fig. 5 is a vertical section taken from frontto rearol' the top of the machine, showing more particularly the type action. Fig. 6 is an enlarged :t'ragmentar top plan view of the right-hand end of the machine showing the series of keys which controls the spacing of the c'arriagetothe right or in a return direction, and the movement of the platen backwardly or in a backspacing direction. Fig. 7 is a perspective view of one of the mutilated gears with its cam. and more particularly the mutilated:

gear which controls a singlestep-spacing movem t; Fig. 8 1s a 't'ijag ntary vertical set-t1 t the left-hand d rind portion of ti detail vertical sec at? ontinuonsly-rotatin a 4 s ance, the gear shown 15 the five-tooth gearl the machine,

corresponding to a five-step movement of the platen or carriage. Fig. 11 is an enlarged top plan view showing the clutching arrangement whereby the selection may be tween the elongated barrel gear and the' gear on the platen. Fig. 16 is a detail perspective view of one of the mutilated gears, showing the notched disk whereby it is caught against overthrow.

Referring more particularly to the separate parts of this invention as embodied in the form shown in the drawings, 1 indicates numeral keys and 2 alphabet or character keys, which when depressed force down key levers 3 (Fig. 5) to swing type bars 4,

through the intermediary or linkages 5,-

' rearwardly up against the front side of a platen 6, mounted to rotate by means of an axle 7 extending in bearings 8 on a carriage '9. The carriage 9 is mounted between guidew-ays 10, so as to be capable of traveling from left to right of the machine.

In order to traverse the carriage 9 either to the left or right. there is provided on the rear thereof, a rack 11, which is drivenby a pinion 12 on a shaft 13 (Figs. '11, 12 and 13). The shaft 13 may be driven from a shaft 14, which is alined therewith, but the shafts 13 and 1.4 are not directly or rigidly connected together.

-To enable a driving connection between the

shafts

13 and 14, there is secured on the shafts 13, aclutch element 15, into mesh with which is normally .held by a spring 16 (Figs. 4 and 5), a sliding clutch 17, which is splined on the shaft 14. In passing, it

may be noted that the clutch element 15 (Figs. 12 and 14) is provided with a detent l ratchet wheel 18, into engagement with which is normally forced a justifying detent 19, by means of a spring 20. This detente and-ratchet arrangement enables the accu-,. rate' posit oning of thecarriage for any. let- 'j ter space after the carriage has been moved either to the right or to the left.

It is to be noted that the clutch element 17 is double-faced, that is to say, in addition to having clutch teeth which engage the clutch teeth of the clutch element, 15, there are also provided on the opposite side, clutch teeth 21, whereby a mutual engagement may be brought about between the clutch element 17 and a clutch element 22 which is splined on a hub 23,. the latter, however, being loosely mounted on the shaft 14. When there is a mutual engagement between the clutch element 17 and the clutch element 22,

then the hub 23 will be driven from the shaft gear or pinion 31 mounted to rotate on the carriage 9. The elongated barrel gear 31 is at least as long as the platen 6, so that it will be in mesh with the pinion 30 just so long as any point of the platen is opposite to the printing point of the typewriter. The barrel gear 31 is connected to rotate the platen 6 through a train of gears (Figs. 2 and 15), comprising a pinion 31*, forming an extension or continuation of the barrel gear 31,

idlers

32 and 33, and a gear 34 secured to the axle 7 of the platen 6. It willthus be seen that when the shaft 14 is rotated and the clutch element 17 is interlocking with the clutch element 15, then the pinion 12 will be rotated so as to traverse the carriage 9 to the right or left according to the direction of rotation of the shaft 14. If, on the other hand, the clutch element 17 is disconnected from the clutch element 15 and interlocking with the clutch element 22, then the barrel pinion 31 will be rotated so as to rotate the platen either forwardly, or backwardly, ac-

cording to the direction of rotation of the shaft 14. Of course, if it is so desired, inasmuch as the

clutch elements

17 and 22 are both splined for relative movement while yet connected in driving relation with the parts on which they are splined, a concomitant traveling movement of the carriage and rotating movement of the platen may be ob tained.

It will now be shown how the shaft 14 obtains its rotation. 1

1 The shaft 14 has secured at its rear end, a bevel gear 35 (Fig. 11), which meshes with acompanion gear 36 on a vertical shai. 37, having, at its lower end, a bevel gear 38 meshing with a like gear 39 on a forwardlyextending shaft 40, which for-purpose of distinction may be" termed a counter-shaft. On the front end of the shaft 40, there is provided abevel gear 41 (Figs. 3 and 4), which meshes with a pair of oppositely-facing bevel gears 42'and 43, so as to be alternatively driven thereby in a direction corresponding to whichever of the

gears

42 or 43 is driving it. The

gears

42 and 43 are secured to abutting but relatively

movable shafts

44 and 45, respectively. The shafts I nected' position y .maii piila thereto. l The gears in t ,thef spacing'of the car Likewise, the series 6:2"c'ontrols normal or forward line-space movements of the platen;

d 51 (Fig. 3), g ith gears 52 and 53 loosely mounted,"respectively, on the shafts 4i andl l5. To secure the gear 52 (Fig. 9) to the shaft 44, this gear is provided With a clutch element 54:, into engagementwith which may be brought a clutch element55, which" is splined on the shaft 4% which mesh, respfc t'ivelyfw and 'movablefrom' a normal disconnected position by'a. cont llingflever 56, to a con- 1 spring 5 7', vhich normally holds these clutch elementsdisconnected. For convenience, the control lever 56 being located at the left, is

used to control a traveling movement of the carriage to the left, and correspondingly, a

normal or forwardline-space movement of the platen. On the other hand, 1f it 18 desired to have either a return movement of the' carriage on 'erse movement of the platen, control 1" 55,;(Figs. 3 and 6) J a ain t the tension of a spring 59 .fjtofhringf a clutch element 60, which, is "splineid on shaft 45, into look ing engagement with a clutch element 61, secured to the gear 53, which is loosely mounted on the shaft 45. Such an arrangement will cause a continuous drive of the shaft 45 from the shaft, 16, just so long as the clutch elements 60 and 61 are' held in meshing engagementjwith each other.

"In addition to th'efprovision for an undetermined"move: onto ither the platen orthe carriageQ-p on sfalso made for a predetermined.movement thereof in either one direction or the other. For this purpose, there are provided on the shaft 46. two.

series

62 and 6 3 of mutilated gears 64, which are normally disconnected from the continuously rotating shaf but conncetible er as have vary- 'th amuti- Fig. 7) and tilated gears 'n'stance five 1,9 respectively,

e step movein, in'bers'rif teeth latedgeaz (Fig. l0) i 'eorrcspo em three, 'foui v of the platen oi the c rriage. The series 62 controls the spacing of the carriage to the left, and thesserie 63 controls d'jacent opposite o the, right.

and the series 63 contr0ls the reverse or backward movement of the platen.

When connected to the shaft 46 so as to rotate therewith, each mutilated gear is arranged to drive a pinion 65, arranged in onposition thereto, an amount corresponding to the number of teeth on the particular mutilated gear. There is one of these pinions 65 secured on the shaft as for each mutilated gear in the series-62. There is likewise one of these pinions 65 on the shaft 4L5 for each of the mutilated gears in the series 63.

To bring about the connection of the mutilated gears in locked relation with the shaft so that they will rotate therewith, each of these mutilated gears has pivotally mounted thereon, as at 66 (Fig. 10), a clutching pawl 67, which is normally urged by a. spring-68, so asto tend to engage a clutch star or ratchet wheel 69, secured on theshaft 46 in juxtaposition with each of the mutilated gears. Each of the clutching pawls 67, however, is normally held out of engagement with its associated star wheel 69 against the tension of the spring 68, by

means of a tripper or trigger 70 (Fig. 4)

having a toe 72 engaging a lug 73 on the'associated pawl 67.

To release any one of the clutching pawls 67, it is necessaryto rock the associated tripper or trigger 70 about its pivot, to bring the toe 72 thereof out of engagement with the lug 73. To accomplish this, there are provided two

series

74 and 75 of keys 76 (Figs. 3, 6 and 9), which control, respectively, the connection of the mutilated gears of the series 62- and 63 to the shaft 46. Each key 76 is mounted on a bell crank lever 77 (Fig. 4-), which is pivotally mounted on a shaft 78, so that when a key 76 is depressed, it will rock the'bell crank to pull up on an associated link 79, which isconnected to rock the associated tripper or trigger 70 against the tension of a spring 80. Each tripper ortrigger is limited in its return movement by an enlargement 81 thereon engaging a transverse rod 82.

It will be noted after each depression of one of the keys 76, that the associated mutilated gear should be connectedto the shaft 46 but for a single rotation While the spi-i'iig80' migl'it be dependedfupon to acco nplish this, it is desirable to provide positiij e ns for insuring the movement 'of the t1'ippers},o1. triggers. 70 intoflthe'path of. the lugs 7to1 insure the disconnection of the clntches'fifi from the associated star wheel 69;, To accomplish this, each f the. mutilatd'igeai's has secured thereto, so as to rotate h with, a cam disk 83' liaving a cam Sflther on, which is so located with respect to" the teeth of the mutilated gear that-it will come into play subsequent tothe'action of the teeth near the end of a'single rotation of the mutilated gear. This cam engages a cam lever 85, of which there is one provided for each mutilated gear, so as to rock the same and thus rock a common shaft 86 to which all of the cam l evers 85 are secured. The rock shaft 86 has also secured thereon, two pairs of arms 87, each pair of which is connected by a transverse universal bar 88 arranged to overlie the tails of all of the trippers or triggers 70. Thus, when any one off the mutilated gears has been ""nnected to rotate with the shaft 16, the

aft 86 will be rocked near the end of the rotation of the particularly mutilated gear, so as to depress the universal disconnecting bars 88, and thus force whichever tripper or trigger may have been rendered ineffective, to its effective tripping position. In order to prevent overthrow of the mutilated gears. they are each provided with a locking disk 89 (Fig. 16), having a notch 90-, into engagement with which is urged, by means of a spring 92, at the end of the rotation of the corresponding mutilated gear, a detent 91, pivotally mounted on the rod 82. The rock shaft 86 also prevents overthrow of the shafts 4th and 45. For this purpose, these shafts are provided, at their opposite ends, with individual star or ratchet wheels 120 (Figs. 3 and 8), which are secured thereto and provided with the same number of teeth as the gears 65. Each of these star wheels 120 may be engaged by a detent 121, loosely mounted on the rock shaft 86. There are secured to the rock shaft 86, two arms 122, one for each of the detents 121. These arms are each provided with a pin 123 overlying the associated detent 121, so that when the shaft 86 is rocked, to bring about a positive return movement of the trippers or triggers 70, then the deten'ts121 will also be positively forced into engagement with their associated star wheels 120, to lock the shafts 44: and 45 in whatever position they may have been driven to. T o a certain extent, these detents 121, having each a wedge toe engaging between the bevel teeth of the adjacent star wheel 120, 'act as justifying members. Each detent 121 is provided with a second arm 124, having a pair of

notches

125 and 126 therein, which are engaged by a spring-pressed dog 127, which yieldingly ho ds the associated detent in either of its adjusted'positions in or out of engagement with the associated star wheel 120.

It is, of course, desirable to enable a spacing of the carriage when any of the character keys 2 are struck, so as to bring the next letter space of the work-sheet opposite to the printing point. For this purpose, there is provided, underlying all of the key levers 3 for the alphabet keys 2, a universal bar 93, which joins a pair of arms 94 loosely mounted on the shaft 78. One of the arms 94 extends beyond the shaft 78, as at 95, where it is provided with a link 96 connecting it to the tripper or trigger (Fig. 4) which corresponds with and controls the mutilated gear 0-1 in the series (32 which has but a single tooth corresponding to a single step movement of the carriage 9 in a travel to the left, that is, in a letter-feeding direction. The universal bar 93 and connected parts are returned after actuation to their normal position by one of the springs 80. It will be noted at this point, that the link 79 for the key 76, which also controls the activity of the particular mutilated gear 61 just mentioned, has a loose connection with the trigger 70, so as to permit the actuation of the trigger '70 by any of the alphabet keys 2, without a corresponding movement of this particular key 76.

As has been stated above, the movement of,the platen or of the carriage is selective. The arrangement whereby this selection is made will now be described.

The shifting of the clutch 17 which controls the elfectiveness of the driving connection to the carriage-traversing gear 12, is controlled from a key 97 (Figs. 2 and 5) arranged in juxtaposition to the character keys of the typewriting mechanism. This key is mounted on a lever 98, which is pivoted intermediate its ends and connected by a link 99, to rock a bell crank shifting lever 100, which is forked at its other end and provided with pins 101, which engage in an annular groove 102 in the clutch 17. The clutch element 22 is also controlled by a key 103 mounted on a lever 101, which rocks about a pivot 105, so as to draw down on one arm 100, of a bell crank lever 107, through the intermediary of a connecting link 108. The other arm, 109, of this bell crank levcr107 is bifurcated at its upper end and provided with pins 110, which engage in an annular groove in the clutch element 22. A spring 11.1 is connected to'the arm 109, so as to hold the clutch element normally away from the clutch 1?.

If it is desiredto rotate the platen solely, both of the keys 97 and 103 must be depressed simultai'ieously, so as to move the clutch 17 out of mesh with the clutch element 15, and move the clutch element- 22 and the clutch 17 into mutual mesh with each other. ()1? course, the key 103 can be actuated alone to bring the clutch element 22 into engagement with the clutch 17, so as to aiford a concomitant rotation of the platen with a traveling movement of the carriage. Likewise, the key 97 can be operated alone, to disconnect the carriage from the driving train without connecting tae' Will be descriioed more particularly as related. to this mechanism.

Under norni l nditions, \villfbe by reference to Figs; 5, 11 and 12, the c element is held out of engagemcn the clutch 1'? tlies 'ir'ing 111, so the, platen 6 is rot tijvelyfdisconnectedfrom shaft 14 and bus ffrom the cont ollin mechanism] wh cl governs the connecti the shaft la wi th' tl e motor &7. ()1- it is not desired to same time that the carriage is traversed, so that both the key 97 and the key 103 will be depressedsimultaneously by two fingers of one hand of the operator, so as not'only to bring the clutch element 22 into engagement with the clutch 17, but also to move the clutch in'cmber' 17 out of mesh with the clutch element 15. 1 \Vhile the keys 97 and 103 .are held in their depressed position, the controlling mechanism, which governs the connection of the shafts 4-1 and if) in driven relation with the shaft- 16, can be manipulated with the other hand of the operator.

If it is desired to rotate the platen forwardly in a normal line-spacing direction an undetermined amount. the lever ofiican be manipulated to bring the clutch element into engagement. with the clutch element 5-t,'whereby the platen canbe rotated any desired. amount ,dependent, on the period which these clutch elements are held in en gageme'nt with veach other. Ifit is desired to "rotate the platen an undetermined amo int in the opposite direction, that is, backward, instead of the lever 56 being iiianipulated, itjs merely necessary to move the lever 58 so as to bring about a connection of the clutch elements 60 and 61, when there will be a direct drive from the continuously-rotating shaft L6 to the shaft 45. On the other hand, if it is desired to rotate the platen a distance corresponding to any given number of line spaces, then one of the keys 76 would be depressed in place of a manipulation of either the lever 56 or the lever 58.

Hit is desired to space the platen a single A forward line-space movement thereof. Likewise, if it is desired to space the platen two, three, four or five spaces in a normal linespacing direction, it s merely necessary to depress the corresponding rotate the platen at the comprising a drive motor for rotating sard' platen, a

Y and liaving' nea -motor for irritating said platen n and 5 keys in the series 74, whereby the corresponding'inutilated gears willfbe con; nected to the shaft to gveflthefd movement 0f t h laten Aira'npi 'n i of rotating the p ,7 a spacing direction it 'is'desi d'to rr platen or givejit a i movement, thengoe v would be depressed," the p t tic ila he 75 depending on the numbef'o'f line -spaces which it is desired to return the pljatenlflfsf soon as thepressureon the key 103 isfref leased, the platen willbe operativiely disconf nected fromjthedrijving tra" cannot be rotated "fi mthe by this mechani si for other puip h carriage back and'forth Variations be re scope of the invention, 7 I ,1 I improvements maybe usedfvvithoiit o 1313:: Having thus described my invention, I

1. The combination withaipla'ten, H t, d'lil s? train connected to'said motor, connections betv platen, said-tr and having means 0' connection between saidsh' I a loose mutilated gear and a lifted w a clutch associated'fWi'th'jsaidjloose gear 2. The combination with a platen,

train connected to connections betwee platen, said tr n b comprising a drive sh connection between said I, H v v a loose mutilated gear and a ,geaigjaf clutch associated with said, loose gear, and means for disconnecting saidfclutch ts said mutilated gea r has 'COinpIeteda si gl i rotation. Y 1

3. The coinbinatw A motor for rotating saidfpl train connectedt i connectionsjbet e'en 's d ti fin platen, said'tra I (I I and having 'm'eans'toiender the ame" ctlve comprising a. drive. shaft, a driven l connection between said shafts co" intermeshing fixed and loose goal said gears being mutilated, and I means associated with sai'd loose gear; 4. "The combinatio iwith'fii platen train connected'f ,7 connections between Said tra platen, saidi t'rainf n'giiorma or andhaving men ft e aer the sa 6 act vc e'emprisinga driveshaft,"aidrivenfshatt,, (1,1

aco nnection between said shafts consisting of inter-meshing series of fixed and loose gears, the gears of one series being mutilated and each having a different number of teeth from every other one in the series, individual clutches associated with said loose gears, and selective means for determining Which of said clutches shall be effective.

5. The combination with a platen, of a motor for rotating said platen, a driving train connected to said motor, and driving connections between said train and said platen, said train being normally"'inactive and having means to render the same active comprising a drive shaft, a driven shaft, and a connection between said shafts consisting of intermeshing series of fixed and loose gears, the gears of one series being mutilated and each having a different number of'teeth than every other one in the series, individual clutches associated with said loose gears, selective means for determining Which of said clutches shall be effective, and disconnecting means operating after a predetermined rotation of a loose gear to disconnect the same.

6. The combination with a platen, of a motor for rotating said platen, a driving train connected to said motor, and driving connections between said train and said platen, said train being normally inactive and having means to render the same active comprising a drive shaft, a driven shaft, and a connection between said shafts consisting of intermeshing series of fixed and loose gears, a clutch associated with each of. said loose gears, and disconnecting means for manipulating the parts of said clutches to disconnect their respective gears after a predetermined rotation.

7. The combination with a platen, of a motor for rotating said. platen, a driving train connected to said motor, and driving connections between said train and said platen, said train being normally inactive and having means to render the same active comprising a pair of driven shafts to determine the direction drive of said train by said motor, a drive shaft, and selective mechanism for connecting said drive shaft in driving relation with either 'of said driven shafts. i

8. The combination with a platen, of a motor for rotating said platen, a driving tra n connected to said motor, and driving connections between said train and said platen, said train being normally inactive and having means to render the same active comprising a pair of driven shafts determining the direction of rotation of said platen by said motor, a drive shaft, connections between said drive shaft and said 'driven shafts to drive said train from said motor to an undetermined extent, and connections between said drive shaft and said driven shafts for driving either' of said driven shafts predetermined extents by said motor.

9. The combination with a platen, of a motor for rotating said platen, a driving train connected' to said motor, and driving connections between said train and said platen, said train being normally inactive effective positions, and individual levers for enabling the manipulation of said clutches to their effective positions.

10.- The combination with a platen, of a motor for rotating said platen, a driving train connected to said motor, and driving connections between saidtrain and said platen, said train being normally inactive and having means to render the same active comprising a pair of driven shafts determining the direction of drive of movement of said platen, a series of gears fixed on each of said driven shafts, a drive shaft, two series of gears loosely mounted on said drive shaft, and means for connecting said loosely-mounted gears individually to said drive shaft for a predetermined period.

11. .The combination with a platen, of a motor for rotating said platen, a driving train connected to said motor, and driving connections between said train and said platen, said train being normally inactive and having means to render the same active comprising a pair of driven shafts, dettrmining individually the direction of movement of said platen, a series of gears fixed on each of said driven shafts, a drive shaft, two series of gears loosely mounted on said drive shaft and arranged to drive said fixed gears, a clutch individual to each of said loosely-mounted gears for connecting the same to rotate With said drive shaft, each of said loosely-mounted gears having a different number of teeth from its fellows corresponding to a different extent of rotation of the associated fixed gear on one of the driven shafts, and means for manipulating said clutches to render the same effective and ineffective.

12. The combination with a platen, of a source of power, and rotating means to enable said source ofpower to revolve said platen to difierent predetermined extents from any position of said platen and selectively in either one of two directions.

13. The combination with a platen, of a source of power, and a driving train between said source of power and said platen, said driving tram having a series of d fferent points 'of connection for effecting different degrees of rotation of said platen.

l t. The combination with a platen, of'a source of power, and a driving train for connecting said source of power in driving relation with said platen to enable the rotation of said platen by said source of power, said train being normally'inactive and having separate means for rendering it active at a plurality of points.

15. The combination with a platen, of a source of power, and a. driving train for connecting said source of power in driving relation with said platen .to enable the rotation of said platen by said source'of power, said train being normally inactive and having means for rendering it active at a plurality of points, said means giving different periods of driving connection at each of said points in a graded manner corresponding to diflerent extents of movement of said platen.

16. The combination with a platen, of a motor for rotating said platen, and a drivingtrain between said motor and said platen, said train being normally inactive and having means for rendering it activeat a plurality of points, the means at each of said points enabling a different number of linespace movements of said platen.

17. The combination with a platen, of a motor for rotating said platenfand a drivingtrain between said motor and said platen, said platen, said train being normally inactive and having means for rendering it active at five points, the means at the several points enabling one, t\ vo, three, four, and five line-space movements of said platen.

18. The combination with aplaten, of a motor for rotating said platen, and a driving train connecting said motor with said platen, said train being normally inactive and having means for rendering it active at a'plurality of points, said means at one point enabling a single line-space movement of said platen, and at the other points enabling successively increased numbers of definite line-space movements of said platen, increasing by a definite increment.

19. The combination with a platen,of a motor for rotating said platen, and a driving train connecting said motor with said platen, said train being normally inactive and in cluding a drive shaft, a series of mutilated gears looselv mounted on said drive shaft, and means for individually connecting said mutilated gears to said drive'shaft to render said train active, said mutilated gears having varying numbers of teeth corresponding to different line-space movements of said platen. 20.

The combination with a platen, of a motor for rotating said platen, and a driving train connecting said train with shaft, and means foiflconnectmg said inutr lated gears .iiidivid' to render the train active;

21. The Carina-ants "with a platen, motor for rotating said platen, a ,d train connectin saidmotor' ivithsaid said train beingnarmau inactive 'ari dirr-tf eluding a drive shaft, a series of'inuti-lated gears loosely mounted on said drive shaft, and means for connecting said mutilated gears individually to*"said*'drive shaft-to render the train active betw'een said motor and said platen, eac'li of'fsaidf mutilated gears having one tooth more an the gennext preceding it corresponding to different ex; tents of movements of said 'platenfeach. of said teeth correspondiiig jtd a fine-spate movement of said platen." f 22. 'The combinationvvith' a platen-aria motor for rotating saidplaten,and'adriving train connecting said 'inotorfltjo said drmallyflinact platen, said trainbeing; and including means for 'reiiiiering to effect a defi ite'praietermineda-oranan of said platen corresponding to I definite pl'u' ral number of line-spaces, and Inecl ariisin insuring but a single-mannerand means at one time. 1 f i 23. The combination'with a platen, of a motor for-rotating said platen, andfia driv ing train connecting said motor with said platen, said train being'no'rina'lly inactive and including means connectible to the train for rendering itjactivefand 'mechanismffor insuring the disconnectio "oit'*'"said means after a predetermined drlveworre'sp'oiiding to a definite rotation of sai'dplga ten.

24. The combination'with aplat'en, of'fa' motor for rotating said platen, and a driv; ing train connecting said i motor with said platen, said train being normally inactive and including means to render it active, having a definite cycle corresponding toa given rotation of said platenfcontrolling means for starting the actio'n of said first-men'- tioned means, and trippingm chanism for insuring the disconnectionof said{ first mentioned means after "the: coiiipletion I ffof its cycle. 7 f

25. The combination with a platen, of a motor for rotatingsaid platen, a driving train between said motor and said platen, said train being normally inactive, connecting means for rendering said "train active for a period of, rotation corresponding to a single line-space movement of sai platen, and selecting "meane'for determining whether "the movementQof saidplaten shall be'in one 'directi'ou or the other,

26, The combination with" 'a platen, ofa motor for rotating said platen, a driving.

lytosaid'drive ft train between said motor and said platen, said train being normally inactive so as to prevent movement of said platen by said motor, and selective means for rendering the train active for different predetermined periods of rotation corresponding to one, two, or more line-space movements of said platen.

27. The combination with a platen, of a motor for rotating said platen, a driving train between said motor and said platen, said train being normally inactive to prevent the rotation of said platen by said motor, and a key for rendering the train active to drive said platen an extent correspondlng to a definite plural number of line-spaces.

28. The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor With said platen, said train being normally inactive so as to prevent the rotation of said platen by said motor, and a series of keys for reni dering said train active to drive said platen to differentpredetermined extents.

29. The combination with a platen, of a motor for rotating said platen, and a plurality of keys for effecting rotations of sa d platen to different definite extents by said motor.

30. The combination with a platen, of a motor for rotating said platen, and a plurality of keys for controlling the rotation of said platen by said motor in different directions.

31. The combination with a platen, of a motor for rotating said platen, a series of keys for controlling the rotation of said platen by said motor to different extents in one direction, and a series of keys for controlling the rotation of said platen by said motor to different extents in the opposite direction.

The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor with said platen, said train being normally inactive so as to prevent the rotation of said platen by said motor, and a series of keys for rendering said train active, each of said keys corresponding to a different number of linespace movements of said platen.

33. The ecinb nation with a platen, of a motor for rotating said platen, a driving train conuec said motor with said platen, said train being normally inactive, a key for rendering said train active to enable a rotation of said platen in one direction, and a kev for rendering said train active to enab e a rotation of said platen in the opposite direction.

ll. The comb nation with a platen, of a motor for rotating said platen, a driving train between said motor and said platen. a kc for enabling a rotation of said platen in a normal line-spacing direction a given The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor with said platen, a series of keys for effecting rotations of said platen in a normal linespa-cing direction, and a series of keys for effecting rotations of said platen in the reverse-to-normal direction.

36. The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor With said platen, a series of keys for effecting rotations of said platen in a normal line-spacing direction, and a series of keys for effecting rotations of said platen in the reverse direction, each key in each series effecting a rotation of different magnitude from that effected by every other key in the same series.

37. The combination With a platen, of a motor for rotating said platen, and a driving train connecting'said motor With said platen, said train being normally inactive and including a drive shaft, a driven shaft, a gear on said driven shaft, a mutilated gear loosely mounted on said drive shaft and arranged to mesh with said gear on said driven shaft, a clutch for connecting said mutilated gear to said drive shaft, and akey for controlling said clutch.

The combination with a platen, of a motor for rotating said platen, and means for enabling the rotation of said platen by said motor, said means including a driving train connecting said motor With said platen, said train being normally inactive and including a drive shaft, a driven shaft, a'pinion on said driven shaft, a mutilated gear on said drive shaft arranged to mesh with said pinion on said driven shaft, said mutilated gear being loosely mounted, a clutch for connecting said mutilated gear with said dr ve shaft, a key for rendering said clutch effective to connect said mutilated gear with said drive shaft, and a tripper for insuring the disconnection of said mutilated gear from said drive shaft.

89. The combination with a platen, of a motor for rotating said platen, and means for enabling the rotation of said platen by said motor, said means including a driving train between said motor and said platen, said train being normally inactive and including a drive shaft, a driven shaft, a pinion fixed on Said driven shaft, a mutilated gear looselyniounted on said drive shaft, a clutch for connecting said mutilated gear to said drive shaft, means for causing.

connection of said mutilated gear with said drive shaft through the intermediary of said clutch, and a tripper acting at the end of a complete revolution of said multi- 40. The combination with a platen, of a motor for rotating said platen, and tabulating means for connecting said motor with said platen to space said platen back and forth different definite extents from any point in the movement of said platen.

41. The combination with .a platen, of a motor for rotating said platen, means for en abling the rotation of said platen by said motor, said means including a driving train for connecting said motor and said platen, said train being normally inactive and including a drivesliaft, a driven shaft, a series of mutilated gears loosely mounted on said drive shaft, a series of pinions for meshing with said mutilated gears'respectively and secured to said driven shaft and a clutch for each of said mutilated gears for connecting it to rotate with said drive shaft, and

a key controlling each of said clutches to connect the associated mutilated gear to said drive shaft, said mutilated gears having different numbers of teeth increasing successively by equal increments.

42. The combination with a platen, of a motor for rotating said platen, means for enabling the rotation of said platen by said motor, said means including a driving train for connecting saidmotor 'with said platen, said train being normally inactive and including a drive shaft, a driven shaft, a series of mutilated gears loosely mounted on said drive shaft, a series of pinions for meshing with said mutilated gears respectively-and secured to said drivenshaft and a clutch for each of said mutilated gears for connecting it to rotate with said drive shaft, a key controlling each of said clutches to connect the associated mutilated gear to said drive shaft, said mutilated gears having different numbers of teeth increasing successively by equal increments, and a tripper for each of said clutches acting to render said clutches ineffective after a given movement of the associated mutilated gear with said drive shaft.

4.3. The combination with a platen, of a motor for rotating said platen, means for enabling the rotation of said platen by said motor, said means including a driving train for connecting said motor with said platen,

said train being normally inactive and in-' cluding a drive shaft, a driven shaft, a series of mutilated gears loosely mounted on said drive shaft, a series of pinions for meshing with said mutilated gears respectively and secured to said driven shaft, and a clutch for each of said mutilated gears for connecting it to rotate with said drive shaft, a key controlling each of said clutches to connect the associated mutilated gear to said drive shaft, said mutilated gears. having different numbers of teeth increasing successively by equal increments, a tripper for each of said clutches acting to render said clutches ineffective after a given movement of the associated mutilatedgear with said drive shaft, and a bar universal to said trippers actuating at the connection of an} of said mutilated gears with said drive shaft to insure the disconnecting action of said trippers. I

44. The combination with a platen, of a motor for rotating said platen, means for enabling the rotation of said platen by said motor, said means including a driving train for connecting said motor with said platen, said train being normally inactive and including a. drive shaft, a driven shaft, a series of mutilated gears loosely mounted on said drive shaft, a series of pinions for meshing with said mutilated gears respectively and secured to said driven shaft'and a clutch for each of said mutilated gears for connecting it to rotate with said drive shaft, a key con: trolling each of said clutches to connect the associated mutilated gear to said drive shaft, said mutilated gears having different numbers of teeth increasing successively by equal increments, a tripper for each of said clutches acting" to render said clutches ineffective after a given movement of the associated mutilated gear with said drive shaft, a cam rotating with each of said mu" gears, and a bar operated by said cam the rotation of any of said mutilated with said drive shaft, said bar engaging said trippers to insure the disconnection of the mutilated gear in action from said drive shaft by its tripper.

45. The combination with a platen, of a motor for rotating said platen, means for enabling the rotation of said platen by said motor, said means including a driving train connecting said motor with saidplaten, said train being normallyvinactive so as .to prevent the rotation of said platen by said motor, and means to render said train active, comprising a drive shaft, a driven shaft, a mutilated gear loosely mounted on said drive shaft, a pinion secured to said driven shaft and engageable by said mutilated gear, a clutch connecting said mutilated gear to rotate with said driving shaft, a tripper for interrupting the action of said clutch, a spring for holding said tripper in its effective position, and positive means actuated at each rotation of said mutilated gear insuring the disconnecting position of said tripper.

46. The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor with said platen,

'said train being-normally inactive and including a drive shaft, a gear loosely mounted on said drive shaft and a clutch for connecting said gear to said drive shaft, a tripper for rendering said clutch-effective to connect said gear with said drive shaft, a key for shifting said tripper to effect the connection of said gear with said drive shaft, and means actuated by each rotation of said gear With said drive shaft for positioning said tripper to render said clutch ineffective, so as to enable the disconnection of said gear from said shaft.

47. The combination with a platcn,.of a motor for rotating said platen, and a driving train connecting said motor with said platen, said train including a drive shaft, a driven shaft, and a connection between said shafts consisting of inter-meshing fixed and loose gears, and a clutch associated With said loose gear.

48. The combination with a platen, of a motor for rotating said'platen, a driving train connecting said motor with said platen, I

said train including a drive shaft, a driven shaft, and a connection between said shafts consistingof intermeshing fixed and loose gears, a clutch associated with said loose gear, means for holding said clutch in a normal position, and means for manipulating said clutch to control the driving of said platen by said motor.

49. The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor with said platen, said train including a drive shaft, a driven shaft, a gearing for connecting said drive shaft with said driven shaft, and spring- -controllcd moans associated with said gearing for normally rendering the same inactive, to interrupt the transmission from said drive shaft to said driven shaft.

50. The combination with a platen, of a motor for rotating said platen, a driving train for connecting said motor with said platen, said train including a drive shaft, a driven shaft, and a connectionbetween said shafts consisting of intermeshing fixed and loose gears, a clutch associated with said loose gear, a lever for manipulating said clutch, and a spring for holding said clutch normally in its disconnected position.

51. he combination with a platen, of a motor for rotating said platen, a driving train including a drive shaft, a pair of 'driven shafts, a comitershaft common to both of said driven shafts, gearing connecting said driven sir f i with said countershaft so as to drive the ttcr in' opposite directions, connections for joining said drive shaft with one of said driven shafts to rotate said countershaft in one direction, conncctions for joining said. drive shaft With the other of said driven shafts to rotate said countershaft in the opposite direction, and

motor for rotating said platen, a driving train connecting said motor with said platen, said train including a drive shaft,

a pair of driven shafts, a countershaft, gearing connecting both of said driven shafts With said countershaft to enable the former to drive the latter in opposite directions, intermeshing pairs of fast and loose gears connecting said drive shaft With both of said driven shafts, and'a clutch associated with each loose gear, and means for selectively manipulating said clutches.

53. The combination With a platen, of a motor for rotatingsaid platen, a driving train connecting said motor With said platen, said train including a drive shaft, a pair of driven shafts, a countershaft, gearing connecting both of said driven shafts With said counter shaft to enable the former to drive the latter in opposite directions, intermeshing pairs of fast and loose gears connecting said drive shaft With both of said driven shafts, and a clutch associated With each loose gear, spring means normally holding said clutches in their ineffective position, and levers for manipulating said clutches against'the tension of said spring means.

54. The combination with a platen, of a motor for rotating said platen, a driving train connecting said ,motor With said platen, said train including a drive shaft,

a pair of abutting driven shafts, a countershaft, a bevel gear on said countershaft, a pair of oppositely-facing bevel gears "secured, respectively, one on each of said driven shafts and meshing with said firstmentioned bevel gear to drive said countershaft in opposite directions, a gear loosely mounted on each of said driven shafts, a pair of gears fixed on said drive shaft and meshing with said loosely-mounted gears, a clutch for securing each of said looselymounted gears to its shaft, and means for manipulating said clutches.

55. The combination With a platen, of .a motor for rotating said platen, a driving train connecting said motor With said platen, said train being normally inactive, means for rendering said train active for an undetermined period of operation to r0- tate said platen any undetermined amount, and means for rendering said train active for a definite predeterminedperiod of operation corresponding to a definite plural number of line-space movements of said platen. if

56. The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor With said platen, said train being normally inactive,

clutching means for rendering said trainpredetermined extents of rotation of said platen.

57 The combination with aplaten, of a 'motor for rotating said platen, a drivingtrain for connecting said motor with said platen, said train being normally inactive, clutching means for rendering said train active for any undetermined period of operation at a plurality of points to enable any undetermined rotation of said platen selectively backv'ardl or forwardly, and clutching means for rendering said train active for a definite predetermined period of operation at any one of a plurality of points cor-responding to different definite predetermined rotations of said platen selectively in one direction or the other.

58. The combination with a platen, of a motor for rotating said platen, means. for effecting an undetermined rotation of said platen by said motor, andmeans for effecting a definite predetermined rotation of said platen by said motor to an extent corresponding to a definite predetermined plural number of line-space movements.

59. The combination with a platen, of a motor for rotating said platen, means for effecting an undetermined extent of rotation of said plater by said motor in either one direction or the other, and means for effecting av definite predetermined rotation of said platen by said motor to an extent corresponding to a definite predetermined plural number of line-spaces in one 'direc-.

tion or the other.

60. The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor with said platen, said train including a drive shaft, a pair of driven shafts, a countershaft arranged to be alternately driven by said driven shafts in opposite directions, a gear loosely mounted on each of said driven shafts, a clutch for connecting each of said gears to said driven shafts, a pair of gears on said drive shaft and meshing with said loosely-mounted gears, a lever for manipulating each of said clutches, a springfor holding each of said clutches normally in its disconnected position, a series of gears fixed on each of said driven shafts, a series of mutilated gears loosely mounted on said drive shaft and arranged to mesh with said fixed gears on said driven shafts, and

clutches for connecting said mutilated gears individually to said drive shaft, trippers normally rendering said second-mentioned clutches ineffective, and keys individual to each of said mutilated gears for actuating said trippers to enable the engagement of said second-mentioned clutches so as to cause predetermined line-space movements of said platen selectively in one direction or the other.

61.'The combination with a platen, of a motor for rotating said platen, a driving train connecting said motor With said platen, the train being'normally ineffective, a. plurality of clutches for rendering said train effective at different points-to govern the kind of rotary movement imparted to said platen by said motor, and a clutch for determining the subservience of said platen to said motor irrespective of said first-mentioned clutches.

I 62. The combination with a platen, of a motor for rotating said platen, a driving train for connecting said motor with said platen, said train being normally ineffective, a plurality of clutches for rendering said train effective at a plurality of different points to govern the kind of rotary movement imparted to said platen by said motor, and a clutch located intermediate said firstmentioned clutches and said platen to determine the efiectivenessof said train independent of said first-mentioned clutches.

63. The combination with a platen, of a motor for rotating said platen, a normally inactive driving train extending between said motor and said platen, key-controlled means for rent ering said train eifectiveto rotate said platen in one direction, and keycontrolled means independent of the firstnamed means for rendering said train effective to rotate said platen in the opposite direction.

64. The combination with a platen, of a motor for rotating said platen, a driving train for connecting, said motor to said platen, said train being normally inactive, aseries of keys for rendering said train active to enable the rotation of said platen by said motor,v and key-controlled means for determining the. subservience of said platen to said train when rendered active by said firstqnentioned keys.

65. The combinationwith a platen, of a motor for rotating said platen, and a plurality of selective driving trains conuecting said platen With said motor. to rotate said platen a given amount corresponding to a plural number of'line-spaces, or an indefinite amount.

66. The combination with a platen, of a motor for rotating said platen, and a driving train connecting said motor with said platen, said train being normally inactive, and including a drive shaft, a driven shaft,

a. plurality of mutilated gears on one of said shafts, and a plurality of complete gears on the other of said shafts corresponding to said mutilated gears, said mutilated gears having different number of teeth starting with a minimum and increasing by increments so as to eflect different numbers of line-space movements of said platen.

67. The combination with a platen, ofa motor for rotating said platen, and a multiplex driving train connecting said motor to said platen, said train being normally inactive, and including means to render it active in a plurality of ways, each way corresponding to a different driving ratio between said motor and said platen.

68. The combination with a platen, of a motor for rotating said platen, and aseries of keys for controlling the rotation of said platen by said motor, each of said keys effecting a movement of said platen different.

in extent from that determined'by the others of said keys.

69. The combination with a platen, of means for rotating said platen, and selective mechanism for enabling the rotation of said platen by said means either in a forward direction or in a backward direction, said selective mechanism being also selective as to the degree of rotation of said platen by said first-mentioned means in one direction or the other.

70. In a typewriting machine, the combination with a carriage, and a rotatable platen thereon, of a plurality'of means, distinct from one another, for effecting variable rotations of said platen according to the particular means operated, and a key individual to each of. sa.id means for operating the same; said keys being mounted upon the framework of the machine.

71. The combination of a rotatable platen, a plurality of means, distinct from one another, for effecting back and forth rotations of said'platen of diiie'rent definite predetermined extents, and a key individual to each of said means for operating the same.

72. The combination with a platen, of a motor for line-spacing the platen, a normallyinactive. driving train for connection said motor to said platen, key-controlled means for rendering said train active to line-space said platen in normal direction, and key-controlled means independent of the first-named means for rendering said train active to linespacesaid platen in reverse direction.

73. The combination with a platen, of a, motorfor line-spacing said platen, a normally-inactive driving train for connecting said motor to said platen, means for rendering said train active to line-space said platen to a definite predetermined extent in nbrmal direction, and means independent of the first-named means for rendering said train active to line-space said-platen to a definite extent in reverse direction. V

74. The combination with a platen, of a motor for line-spacing said platen, a normally-inactive driving train for connecting said motor to said platen, means for rendering said train active to line-space said platen in one direction to an extent corresponding to a predetermined plural number of linespaces, and means independent of the firstnamed means for rendering said train active to line-space said platen in the opposite clirection to an extent corresponding to a predetermined plural number of line-spaces.

75. The crmbination with a platen, of a motor for line-spacing said platen, a normally-inactive driving train for connection said motor to said platen, key-controlled means for rendering said train active to line-. space said platen to a definite predetermined extent in normal direction, and key-controlled means independent of the first-named means for rendering said train active to linespace said platen to a definite predetermined extent in reverse direction.

76. The combination with a, platen, of a motor for line-spacing said platen, a normally-inactive driving train for connecting said motor to said platen, key-controlled means for rendering said train active to line' space said platen in one direction to an extent corresponding to a predetermined plu- 'ral number of line-spaces, and key-controlled means independent of the first-named means for rendering saldrtrain active to line-space said platen in the opposite direction to an extent corresponding to a predetermined plural number of line-spaces.

77. The combination with a platen, of a source of power, and selective means for connecting said source of power with said platen so as to impart line-space movements to the latter to different predetermined extents and in either of two directions.

- 78. The combination with a platen, of a motor for line-spacing said platen, a key for.

enabling line-space movement of said platen by said motor innormal direction only and to the definite extent of a single line-space only, and aseparate key for enabling a linespace movement of said plaien by said motor in reverse direction only and to the definite extent of a single line-space only.

79. The combination with a platen, of a motor for line-spacing tneplaten, a key for enabling a line-space movement of said platen by said motor in one -direction only and to the definite extent of a predetermined number of line-spaces only, and a separate key for enabling'a line-space movement of said platen by said motor in the opposite direction only andto the definite extent of a predetermined number of line-spaces only..

80. The combination with a platen, of a.