US1386653A

US1386653A - pitman

Info

Publication number: US1386653A
Authority: US
Publication date: 1921-08-09
Anticipated expiration: 1938-08-09

Description

H. L. PITMANT 4 COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED JAN. 17, 1918.

1,386,653. Patented Aug. 9,1921.

l l'fnessea- Affor' ey H. L. PITMAN.

4 COMBINED TYPEWRITlNG AND COMPUTING MACHINE.

APPLICATION FILED JAN. 17. 1918.

i,386,653. P tentedAug. 9,1921.

5 SHEETS-SHEET 2- /m/en for":

Affo 2y I Wfnessea- H. L. PITMAN. COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED JAN-17' I9I8.'

2 0. mm e u H P w 6%. 0 2.1 V 1T um fl 4/ n5 H. L. PITMAN.

COMBINED TYPEWRITING AND COMPUTING MACHINE.

APPLICATION FILED JAN. l7, 19H].-

Patented Aug. 9, 1921.

5 SHEETS-SHEET 5- UNITED STATES PATENT OFFICE.

HENRY L. PITMAN, OF EAST ORANGE, NEW JERSEY, ASSIGNO-R T0 UNDERWOOD COM- PUTING MACHINE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

COMBINED TYIPEWRITING AND COMPUTING MACHINE. I

Patented Aug. 9, 1921.

Application filed January 17, 1918. Serial No. 212,213.

To all whom it may concern:

Be it known that I, HENRY L. PITMAN, a citizen of the United States, residing in East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful Im rovements in Combined Typewriting and omputing Machines, of which the following is a specification.

This invention relates to combined typewriting and computing machines, and more particularly to machines provided with means for obtaining the cross-total of numbers typewritten in a single line in different columns on the work-sheet.

This invention is illustrated in connection with the improvements disclosed in my co-pending applications No. 198,375, filed October 25, 1917 (now Patent No. 1,350,387, dated Aug. 24, 1920), and No. 2 1,390, filed April 28, 1915 (now Patent No. 1,308,506, dated July 1, 1919).

In said application No. 198,375, the crosstotalizer is arranged to alternately travel with the t pewriter carriage and return independent y thereof repeatedly during each run of the carriage. For this .purpose, tappets or dogs provided on the typewriter carriage pick up said cross-totalizer successively at different points in the run of the typewriter carriage, and cause said crosstotalizer to move step-by-step with the typewriter carriage through the computing zone. When the typewriter carriage steps out of a computing zone, the cross-totalizer is dropped or released 'fromthe carriage and returned to normal position, read to be picked up by the next tappet on t e type-' writer carriage.

In practlce 1t- 15 often necessary to set back the typewriter carriage for making corrections in the same line of writing and for other purposes. Sometimes this is accomplished by the hand of the operator presslng the carriage directly to the left; but in many cases it is accomplished by the use of a back-space key, the depression of which sets the carriage back a single letter-space. Repeated operation of the key will set the carriage back two or more letter-spaces.

In setting back the carriage, it may sometimes be the case that the carriage is standing beyond the computing zone, and its backward or leftward movement will carry it into such zone. Such leftward movement,

as just explai-ned,may be accomplished by the back-space key or otherwise; the carriage coming to rest within the computing zone. One of the main features of the invention relates to the operation of parts as the carriage is backed into a computing zone, particularly various parts of the computing mechanism.

The ty Writer carriage and the crosstotalizer a've a certain denominational relationship with each other. This relationship is determined by the position of the tappet carried on the typewriter carriage. This relationship is temporarily broken, however, when the typewriter passes out of a computing zone; and in said application No. 198,37 5 provision was made whereby the back-space key for the typewriter carriage could also reset the crosstotalizer accordingly; or in other words, the operation of the back-space key to set back the typewriter carriage into a computing zone, also moved the cross-totalizer (with its associated parts) to reestablish the former denominational relationship between the typewriter carriage .and the cross-totalizer.

The back-space key is not only used for back-spacing the carriage into the computing zone, but may also be used for backspacing the carriage at any other place during its traverse. The connection between the back-space'key and the crosstotalizer, in said' pending application, is such that any actuation of the back-space key will move the cross-totalizer, whether the typewriter carriage is in a computing zone or not.

For the purpose of relieving the backspace key of this unnecessary operation of carriage subsequent operations of the back-space key while the typewriter carriage is in the computing zone, will not operate the crosstotalizer.

For these purposes, the connection between the-back-space key and the cross-totalizer may be shifted from efi'ective to ineffective-position by means of a t'eeler or intermediate element that is arranged to be engaged by connections from the cross-totalizer, so that, when the cross-totalizer and its connections are in normal positions, said feeler will be in position to make said connection effective as the baclnvardly traveling typewriter carriage approaches the computing zone. The typewriter carriage may control the feeler through a cam arranged to be engaged by the tappet on said carriage. This cam may be engaged by the typewriter carriage when the latter is a short distance from the computing zone. I

From this it will be seen that the connections between the cross-totalizer and the back-space mechanism are controlled jointly, dependent upon the position of the typewriter carriage with relation to the comput ing zone, and upon the position of the connections from the cross-totalizer with relation to the tappet on the typewriter carrlage.

The present invention also provides improved means whereby the numeral keys of the typewriting machine will be locked it the typewriter carriage. is moved back into a computing zone by hand without being moved back suificien'tly to reestablish its denominational relation with the cross-totalizer. This locking of the numeral keys forces the operator either to operate the back-space'key, or to move the typewriter carriage sufliciently back to cause the crosstotalizer to connect to the typewriter carriage, and thus reestablish the proper denominational relationship between the two. This locking mechanism is under the joint control of the feeler and the typewriter carriage, so that it will only lock the numeral keys when the typewriter carriage is in the computing zone and the denominational relationship between the cross-totalizer and the carriage is not established.

The present invention also provides an improved train of connections between the tappet on the typewriter carriage and the cross-totalizer.

Other features and advantages will hereinafter appear.

In theaccompanying drawings,

Figure 1 is a side view of the machine with parts broken away toshow the interior structure.

Fig. 2 is a skeleton perspective view of theback-spacing mechanism for the typewriter carriage and a connection to the backspacer key, which may be controlled by the typewriter carriage to render it effective or ineffective for repositioning the cross-totalizer denominationally and relatively to the typewriter carriage.

Fig. 3 is a rear view in elevation, partly broken away, to show the means for locking the numeral keys when the typewriter carriage is backed into a computing zone without the aid of the back-spacer key. This figure also shows the train of links and levers forming the connection from the cross-computer carriage to the pickup bar engaging with the pick-up dogs .on the typewriter carriage. The typewriter -arriage is shown as passing through a computing zone, and the cross computer carriage with its totalizer traveling therewith.

Fig. %l is a detail view, with the pick-up bar and the parts connected thereto in their normal position; the carriagealpproaching a computing zone; with the pick-up bar ready to be caught by the movemcntof the pick-up dog corresponding to the position, on the typewriter carriage, of the next totalizer to enter the computing zone.

Fig. :3 is a view similar to Fig. 4, showing the cros'..'-(.-omputer carriagereturned to its normal position. due to the release of the pick-up bar from the pick-up dog, immediately after the movement of the typewriter carriage out of the computing zone. This figure also shows the numeral-key lock, which is actuated by the pick-up bar, as rendered effective. and further shows the thrust lar, which forms part of the connection from the baclespacer key to the cross-totalizer. as moved to its effective position, so that it may. by the depression of the backspacer key, reconnect the pick-up hook with the previously-engaged pick-up dog, to reposition the cross-totalizer.

Fig. (5 is a view similar to Fig. 5, except that the back-spacer key is in its actuated position, and showingthe parts actuated thereby to reconnect the pick-up bar with the pick-up dog.

Fig. 7 is a detail section. taken on line T7 of Fig. and looking in the direction of the arrows at said line, showing the relative arrangement of the pick-up bar, and how it engages with a fixed bracket to prevent it from swinging whenit is in its normal position. Fig. 8 isa sectional rear view. taken on the-line 8 8 of Fig. 7. and looking in the direction of the arrows, at said line.

Fig. 9 is a perspective view. showing the swinging lever comprising a shoe. which is actuated. when any one oi the pick-up dogs passes through the computing zone, to raise the pivoted intermediate lever thereon to an etfectivc osition to be actuated by the pickup bar to render the key-locking mechanism necting link 42 [t p swing a back-spacer pawl and repositioning connection effective.

I have shown my invention as applied to an Underwood machine, in which alphabet keys 10 and numeral keys 11, when depressed, swing key-levers 12 to rock bellcranks 13 about a fulcrum rod 14, to swing type-bars 15 upwardly and rearwardly about a fulcrum 16, to cause types 17 to strike against the front side of a rotatable platen 18. The platen 18 is rotatably mounted for line-spacing movements on a carriage 19, which travels back and forth on a front rail 20 and a back rail 21 for letter-feeding movements.

' For its letter-feeding movements, the carriage 19 is provided with a rack-bar 22, which meshes with a pinion 23 to rotate the latter. The pinion 23 is connected to rotate an escapement wheel 24 by the usual oneway acting pawls 25. The escapement wheel 24 is provided with teeth 26, which cooperate with a loose dog 27- and a fixed dog 28 on a? dog-rocker 29, when the latter isvibrated by a universal bar 30,.engaged by heels31 of the type-bars 15 when the latter approach the printing point. The upper end of the dog-rocker is returned to its forward or normal position by the usual Springs (not 'shown).

The carriage 19 may be moved to bring any denominational position of a column on the platen to the printing. point; To do this there is provided a series of tabulator keys 32, as in the Underwood machine, which, when depressed, move plungers 33 against the tension of return springs 34, to bring the upper ends thereof into the path of effectively-set columnstops 35 on a stopbar 36 secured to the typewriter carriage by a bracket 37. The usual rack-releasing means (not shownin the drawings) may be actuated by any one of theplungers 33 to effect the releasing of the carriage b raising the rack '22 out of engagement w1th the eseapement pinion .23 at the proper time. The usual spring drum 37, Fig. 3, after the release of the carriage, moves the carriage on its rails to the left until it is arrested by one of the effective column-stops coming into engagement with the projected plunger. The'tabulator key is then permitted to return to normal position, thus effecting a reengagement between the feed rack 22 and pinion 23.

A back-spacer mechanism is provided for the typewriter carriage 19, which may be like that disclosed in the patent to Helmond No. 939,962, dated August 10, 1909, and may comprise a backspacer key 38, which, when depressed, rocks a shaft 39 to swing the forward end of an arm 40, located near the center of the machine, downwardly against the tension of a spring 41. :This movement of the arm 40 pulls downwardly .on a cone,css 8 43 into engagement with the te'eth'on the feed rack 22, by swinging itabout a pivot 44 of an arm 45, upon which the pawl is supported at 46. After the pawl 43 is brought into engagement with the teeth of thefeed rack 22, it is arrested against further pivotal movement in this direction by the upper end of the arm 45 striking the rack 22, when a continued movement of the connecting link 42 becomes efi'ective to swing the pawl 43 in another direction about its pivot 46, to draw t-hecarriage backfrom left to right, thus back-spacing the carriage one letter-space position. A spring 47 returns the back-spacer pawl 43 to its normal position relatively to the arm 45, where it.1s arrested by a stop 48. v p The computing mechanism may be similar to that shown in my co-pending application, Seria-1 No. 24,390, herein referred to. Each numeral keymay comprise a cam 50, by which a common indexing element (not shown in the drawings, but clearly described in my co-pending application) may be moved. through angular distances varying in values from 1 to 9 due to the different shapes of the cams 50 on the different numeral key These-movements of'the indexing eleme t may be transmitted to a master wheel 52 to rotate the latter through various angular distances corresponding to the value of the depressed numeral key. The master wheel 52 is so positioned that its movements may be transmitted to anyone of a plurality of column or footing totalizers 51 ;.the master wheel engaging with a series of computing wheels 53, which transfer the values to a series of dial. wheels 54 contained within each totalizer. The totalizers 51 are mounted for traveling movement relative to the master wheel '52, so that the computing wheels may be brought into cooperative relation successively with the master wheelasthe typewriter carriage passes through a computing zone. The totalizers may be adjustably secured to a supporting bar or computer carriage 56 connected to the typewriter carriage 19 to travel therewith, by arms'57 and may be guided in its traveling movementby a rail 58.

- The depression of a numeral key 11 while another numeral key is active is prevented by suitable locking means to avoid a malaction of the computing mechanism. For this purpose, each key lever 'has pivoted thereon a. pendent link 59, provided witha rearward extension 60, which, when its associated key '11 is depressed, is forced between a pair of pivoted pawls 61 to spread them, thereby moving-the-pawls associated with the other keys to an effective position to prevent the entrance therebetween of the rearward projections associated therewith. V

all of the numeral keys are pivotally supported at 62 on a plate 63, and are suspended between-two studs 64 with an amount of play of the pawls between the studs 64 substantially equal to the thickness of one of the rearward projections 60;. thus, by the depression of any one of the numeral keys, this play of the locking pawls is taken up to prevent the depression of another key before the return of the actuated key. The pendent links 59 are guided at their lower ends in a slot 63 in a cross-bar 63 to which the plate 63 is secured.

In addition to the column-computing unit comprising the master wheel 52, which may be a relatively-fixed element, and the totalizer 51, preferably a traveling element, there is also provided a cross-computing unit having a similar relatively-fixed element and a a traveling element." To effect the crosscomputing of numbers written in several columns, there is provided in the cross-computing unit a second master wheel or relatively-fixed element 66, which may beconnected to the master wheel 52 to be driven therewith in a manner similar to that disclosed in my co-pending application, Serial No. 186,098, filed August 14, 1917 (now Patent N0. 1,345,460, dated July 6, 1920), which may comprise a suitable train of mechanism extending from the master wheel 52, having a horizontal shaft 67 which, through bevel gears 68 and69, drives a vertical shaft 70, which, in turn, by means of bevel gears 71 and 72 drives a shaft 73, which may be connected to drive the master wheel 66. These movements of the master wheel 66 may be transferred to a cross-totali zer or traveling element 74, through the intermediary of a series of computing wheels 75, to a series of dial wheels 76 contained within the cross-totalizer; The cross-totalizer 7 4 maybe adjustably mounted on a sup porting bar or cross-computer carriage 77, which may be intermittently connected (in a manner which will be presently described) to move in synchronism with the typewriter carriage 19 and the computer carriage 56 when the totalizers 51 pass through a computing zone. To guide the cross-computer carriage or sub-carriage 77 in its traveling movement, a suitable guide rail 78 may be provided.

To intermittently pick up the cross-totalizer 74 so that it may travel through a computing zone simultaneously with any one of the footing totalizers, there is provided a series of adjustable elements or pick-up dogs 80 on a bar 81, secured to the bracket 37 of the typewriter carriage. The pick-up dogs or elements '80 in construction are similar to the column-stops 35. Both column-stops and pickup dogs may be key-set, as shown in my 00- ending application, Serial No. 198,375. ach of the said pick-up dogs 80 engages with the projection 82 on the pickup bar 82 when the corresponding totalizer 51 enters a computing zone; thereby conmeeting the cross-totalizer carriage with the typewriter carriage.

In the present invention, during the passage of a totalizer 51 through the computing zone, the pick-up element or bar 82, which forms part of a train of mechanism extending between the typewriter or main carriage and the cross-totalizer or subcarriage, is drawn from its normal position (Fig. 4) to rock a bell-crank or rock-arm 83 about its pivot 84, secured to the machine frame in any convenient manner. This causes a laterally-projecting arm 85 of the bell-crank 83, to move downwardly a thrust link 86, to swing an arm 87 and rock a shaft 88 conveniently supported on the machine frame. The rocking of the shaft 88 causes an arm 89 mounted at its forward end to draw on a link 90 and move against the tension of a return spring 91. The link 90 is pivotally connected at 92 to the crosstotalizer carriage 77, so that the latter is moved with the said link, and thus the crosstotalizer 74 moves in synchronism with the .footing totalizer 51.

The pick-u bar 82 normally occupies the position in igs. 4' and 7, where it is held slightly depressed by an offset 93 thereon which underlies a portion 94 of a fixed bracket 95. During the primary advancing movement of the pick-up bar, the offset 93 movesput of engagement with the portion 94 11 allow a spring-actuated lever 97 to swlng the pick-up bar about its pivot until a pin 96 on the pick-up bar strikes the upper side of a slot 95 formed in the bracket 95. This swinging movement of the pick-up bar effects a better connection between the pickup bar and the pick-up dog, by means of a slot 98 in the pick-up bar 82. Thus, the pick-up bar 82 is positively connected to the pick-up dog against relative movement in either direction while the corresponding totalizer passes through a computing zone. The pick-up bar 82 is released from the pickup dog 80, after Writing the last digit in a computing zone, b the pin 96 engaging with a cam 96' on fixe bracket 95, which swings the pick-up bar 82 about its pivotal connection against the spring-actuated lever 97, so as to withdraw the projection 82 to clear the pick-up dog 80, thus permitting the return spring 91 to restore the pick-up bar and the cross-totalizer74 to their normal position, It will be seen that after the pickup bar becomes released from the pick-up dog, the pick-up bar again swings u wardly until the pin 96 strikes the upper si e of the slot 95 on which it slides until the latter part of the return movement of the pick-up bar, at which time the latter is again swung downwardly by means of a cam 99 (Fig. 8)

on the pick-up bar, engaging with a cam 99 on the portion 94 of the fixed bracket 95, thus bringing the pick-up bar to its normal depressed position to be engaged by the next pick-up dog 80.

It will be seen that when one of the totalizers 51 is passing through a computing zone with the cross-totalizer 74, the back-spacer key 38 is effective, through the connections hereinbefore described. to back-space the typewriter carriage 19, thus back-spacing the totalizer 51 and the cross-totalizer 74, which at this time is positively connected to the typewriter carriage by means of the pick-up bar 82. It will be remembered that after the last digit is written in a computing zone, the crosstotalizer 74 becomes disconnected from the typewriter carriage and moves back to its normal position to the right of the master wheel 66. As in my co- 'pending application, Serial No. 198,375, I

have provlded means actuable by the backspacer key 38 to reconnect the cross-totalizer 74 with the typewriter carriage, by means of the pick-up bar 82, to bring the cross-totalizer into register denominationally with the totalizer 51 when the latter is back-Spaced after writing the last digit 1n a computing zone.

To reconnect the cross-totalizer 74 during a back-spacing operation of the carriage 19 to bring one of the totalizers 51 back into a computing zone, the back-spacer key 38, when depressed, pulls downwardly on a link 100 to swing an arm 101 extending from. a short rock shaft 102, which may be mounted on a suitable bracket 103, secured to the machine frame. The forward end of the, rock shaft 102 has a downwardly-p'rojecting arm 104 to move a thrust link 105 laterally, so that an engaging portion 106 thereof,-when the link 105 occupies its effective position, as shown in Fig. 5, engages with a pin 107 on a bell-crank 108 to swing the latter about a fixed pivot 109so as to draw on a link 110 connected to a branch 111 of the arm 89. This causes the rocking of the shaft 88 to move downwardly the free end of the arm 87, to draw the link 86 downwardly and rock the bell-crank 83 about its pivot 84, thus moving the pick-up bar and. consequently the cross-totalizer from the position indicated in Fig. 5 to that indicated in Fig. 6, where the pick-up bar has been reconnected with the previously-engaged pick-up dog, and the cross-totalizer repositioned relatively to its master wheel.

From the foregoing, it will be understood that when the carriage is back-spaced, the column-totalizer or traveling element 51 is back-spaced with respect to the master wheel or relatively-fixed element of the columncomputing unit, and during this movement,

which is caused by the back-spacer key 38,

the thrust bar 105 moves the cross-t'otalizer or traveling element of the cross-computing unit from a normal retracted position to reposition it relatively to' the master wheel or relatively-fixed element 66, thereby. registeringthe two totalizers 51 and 74 denominationally with respect to the master wheels 52 and 66, respectively. This operation also re-registers the cross-totalizer denominationally relatively to the typewriter car-' 107. This break also permits the thrust bar 105 to be shifted, to render it effective, as will presently be described, so that the crosstotalizer may be repositioned thereby. To permit an actuation of the back-spacer key 38, without disturbing the cross-totalizer 74, the thrust bar 105, which normally occupies the position indicated in Figs. 3 and 4, is

provided with a cut-out or slot 112, which, whenthe cross-totalizer is in its normal position, is in alinement with the pin 107, as indicated in Fig.4, so that the back-spacer key 38 may effect the back-spacing of the typewriter carriage, but the thrust link 105 will move idly over the pin 107, due to the cutout 112. r

The means for rendering the back-spacer key effective to position the cross-totalizer 74, or, in other words, the means for rendering the thrust link 105 effective, which is actuated by the back-spacer key, comprises a lever 113, the forward end of which passes through a slot 114 in the thrust bar 105, which permits the latter to be moved independently of the lever 113. When the typewriter carriage is outside of a computing zone, the lever 113 occupies the position indicated in Figs. 1, 2 and 3, and is held in this position by a spring 116, to retain the thrust bar 105 ineffective. The spring pulls downwardly on one end of a pivoted lever or intermediate element 117 to swing the latter about its floating fulcrum 118 mounted on a swinging lever 119, to swing therewith about a pivot 120 on a bracket 121 secured to the machine frame. The tendency of the spring 116 to swing the lever 117 about its pivot tends to force downwardly a link 122 connected to the rear of the pivotdever 113, thus tending to hold the forward end thereof and consequently the free end of the thrust bar 105 in a raised position (Figs. 3 and 4).

The mechanism, including the lever 11?, for raising or lowering the thrust bar 105 occupies an ineffective position when the typewriter carriage is outside of a computing zone, as indicated in Fig. 4. When, however,the' carriage enters the computing zone, the pick-up dog 80 corresponding to the same position engages with a shoe 123, secured-to the swinglng lever 119.,to swing the latter about its pivot'120, thus carrying therewith the fulcrum 118 to swing the free end of the pivoted lever 117 upwardly about its point of connection with the link 122 from the Fig. 4 to the Fig. 3 position. The shoe 123 is of such a length-and in such a position-as to be engaged by the pick-up dog when its associated totalizer enters a computing zone, and to hold the free end of the pivoted lever 117 in the Fig. 3 position for one letter-space position beyond the digit of lowest denomination. The pick-up bar becomes" released from the pick-up dog immediately after the digit of lowest denomination is written, by means of the pin 96 which at this time engages with the cam 96, thus permitting the pick-ugjbar 82 to return to its normal position. uring the latter part of the returnmovement of the .pick-up bar,

engages with an inclined face or cam 125 on-the free end of the pivoted lever 117, to swing the latter about its pivot 118 and raise the connected end thereof to pull upwardly on the link 122, to swing the lever 113 about its fulcrum 115 and swing downwardly its forward end, thus carrying with it the free end of the thrust bar'105 to its effective position (Fig. 5), where the engaging portion 106 is in alinemen't or coiiperative relation with the pin 107. The same condition will arise in case pick-up bar 82 becomes disconnected, accidentally or otherwise, from a dog 80 during the passage ofsaid dog through a computing zone. It will be seen that. if the back-spacer key is now actuated, the typewriter carriage will be back-spaced, and that the cross-totalizer carriage will be reconnected therewith, (Fig. 6), as hereinbefore described. Thus, it will be understood that the means, comprising the intermediate. lever 117, for rendering the thrust bar 105 effective is dependent for its effectiveness upon the position of the carriage and is actuable by the which forms part of the train 0 mechanism extending between the cross-totalizer and the typewriter carriage.

Let it be assumed that the typewriter carriage has passed out of a computing zone,

and the swinging lever 119 is 1n its lower.

position with the, parts in the Fig. 4 position; if the carriage is now moved in a reverse letter-feed direction to a computing zone, without the aid of the back-spacer key, the nearest ick-up dog or adjustable 'element 80 will engage with the shoe 123 to swing'the lever 119 about its ivot, to swing the intermediate lever 117 a out the bentoif portion 124 on the pick-up bar, which a bent-off portion 124 thereof I ick-up bar,

at this time acts as a fulcrum for the inter mediate lever. The intermediate lever pulls upwardly on the link 122 to. render the thrust bar 105 effective, and at the same time lock the numeral keys againstactuation, as will presently be described It will be seen that during this actuation of the intermediate element 117, it acts as a lever of the third order, the connection 118 to the swingin lever 119 acting as the point ofapplication therefor, and the pick-up bar 82, through the intermediary of the bent-oil portion 124, acting as a fulcrum.

The numeral keys are locked to compel the operative to actuate the back-spacer key 38 w on the typewriter carriage is moved back into a computing zone without the aid of the back-spacer key. For this purpose, I haverovided, as in my co-pending application, erial No. 198,375, an automaticallyoperated numeral-key lock. In the present invention, however, I preferably use the pivoted locking pawls 61, which are used to revent the depression of another numeral ey when a numeral key is in its actuated position. It will be remembered that the pawls are suspended between two studs 64 with sufficient" play therebetween to permit the entrance of the offset portion 60 of one of the pendants 59 between its associated pawls. Thus, to lock the numeral keys when the typewriter carriage is backed intoa computing zone, without the assistance of the back-spacer key, I have provided the lever 113 with a pendent link 126, having a rear- 100 ward extension 127 thereon, which is forced v between two of the pawls' ,61 simultaneously witli'the rendering effective of the thrust bar by an actuation. of the lever 113,-

-which is caused, for example, when the pick- 1 up dog at the right-hand side of Fig. 4 is moved leftwardly (during a return moveacts as a fulcrum for the lever 117. vAny undue strain which-may be caused when the overlying projection 124 acts as a fulcrum for the lever 117 is taken up by the offset 93, (Figs. 5 and 7), on the pick-u bar, which underlies the portion 94 of the xed bracket 95 when the pick-up bar is in its normal or .120 retracted osition.

.It will understood that the repositioning connections for the crossstotalizer and the key-lock are rendered effective simultaneously as the key-lock pendant 126 is con- 12.;

nected to the lever 113, which renders the thrust bar 105, forming part of the connection from the back-s acer key, effective. As indicated in Fig. 5, otter-feeding movement of the carriage from the last letter-space in 130 a computing zone to the first letter-space outside thereof will render effective the connections between the back-spacer key and the cross-totalizer and also the key-lock. Further movement of the carriage in a letter-feeding direction by suitable means,

actuation of the back-spacer key, there is provided an offset 130, Figs: 2 and 3, on the thrust bar 105, which moves under a retaining stud 131, secured to a suitable bracket 132 on the machine frame. This is found desirable, as, during the preliminary movement of the thrust bar 105, when actuated by the back-spacer key, the offset portion 124 of the pick-up bar moves out of engagement with the free end of the other pivoted pawl 117, at which time, without the aid of the retaining pin 131,-the spring 116 would break the effective relation between the thrust rod 105 and the stud 107 on the bell-crank 108.

It will be remembered that the shoe 123 will be retained effective in its upperoractuated position for one letter-space after the last digit has been written in a computing zone, (Fig. 5.) It will also be seen that when the shoe 123 and the pick-up dog 80 occupy this relative position, the thrust bar 105 occupies its effective position. Thus, when the back-spacer key 38 is actuated immediately after the writing of the last digit in a computing zone, it will be effective to reposition the cross-totalizer relatively to the typewriter carriage by back-spacing the typewriter carriage one letter-space and reconnecting the pick-up hook with the previously-engaged pick-up dog.

If the back-spacer key is actuated with the thrust bar 105 in its inefi'ertive position, Fig. 4. the offset portion 130 thereof will ride over the pin 131 to prevent the shifting of the thrust rod during its actuation by the back-spacer key. If the typewriter carriage, previous to the depression of the back-spacer key, occupies a position with one of the ick-up dogs 80 immediately to the right of the shoe 123, indicated in dotted lines, (Fig. 4) the dog will, by the actuation of the back-spacer key, raise the shoe to swing the lever 119, thus carrying with it the fulcrum 118, which, at this time, isv

effective to swing the intermediate lever 117 and cause an upward pull of the connecting link 122. It'will also be remembered that the thrust bar 105 is at this time riding over the pin 131; therefore, an independent movement of the link 122, relatively to the thrust bar 105, is permitted by providing a yielding connection between the connecting link 122 and the operating lever 113.

one end of which is connected to the link 122, the other end being connected to the operating lever 113. The lower end of'the connecting link 122 is provided with a slot 134 to permit this independent movement.

Variations may be resortedto within the scope of the invention, and portions of the improvements may be used without others. Havingthus described my invention, I claim:

1. The combination with a typewriter car-- riage, of a cross-totalizer, means to cause said cross-totalizer to travel intermittently with said carriage, back-s acing means for said carriage, andmeans or rendering said back-spacing means effective so that said cross-totalizer may be re-positioned thereby, relatively to said typewriter carriage.

2. The combination w1th a typewriter carriage, of a cross-totalizer, pickup means, releasing means to cause said cross-tota-lizer totravel intermittently with said carriage, back-spacing means for said carriage, and means for rendering said back-spacing means effective to re-position said crosstotalizer relatively to said typewriter carriage.

3. The combination with a typewriter carriage, of a plurality of column-totalizers traveling therewith, a master wheel therefor, a cross-totalizer, a master wheel, for said cross-totalizer, said cross-totalizer being adapted to travel with "said typewriter ca rriage when one of the column-totalizers passes through a computing zone, meansto permit said cross-totalizer to return to its normal. position when the typewriter carriage passes out of the computing zone, a back-spacer for said typewriter carriage, and means for rendering said back-spacer efl'ective, sothat the cross totalizer may be repositioned thereby relatively to its master wheel.

- the traveling element of said cross-computer unit to travel with the traveling element of the column-computer unit, when the carriage passes through a computing zone, means to permit said cross-computer traveling element to return to a normal position after the carriage passes out of the com uting zone, a back-spacer for the trave ing element of said column-computer unit, a connection from said back-spacer for causing a relative-K re-registering of the elements of 4 said cross-computer unit, and means for rendering said connection efiective.

The combination with a typewriter carriage, of a cross-totalizer, pick-up devices on said typewriter carriage, a train of mechanism extending between the eross-totalizer and the typewriter carriage, said train of machanismcomprising a pickup bar adapted to be engaged by one of said pickup devices when the typewriter carriage "enters a computing zone, means for releasing said pick-up 'bar from said pickup device immediately after the carriage passes out of the computing zone. so as to permit the crosstotalizer to return to its normal position, a back-spacer key for said typewriter carriage, means actuable by the back-spacer key for reconnecting said pickup bar with said pick-up device, said means being normally inefiective, and means for automatical y renderingsaid reconnecting means effective immediately after the typewriter carriage passes out of the computing zone.

6. The combination with a typewriter carriage, of a- 'cross-totalizer carriage, a cross-totalizer thereon, pick-up means comprising a pickup bar and releasing means to cause the cross-totalizer carriage to travel intermittently with said typewriter carriage, a back-spacer key, means actuable by said back-spacer key to reconnect said cross-totalizer carriage with saidtypewriter carriage by means of said pick-up bar. so as to reposition the cross-totalizer denominationally relatively to said typewriter carriage. said repositioning means being n ormally ineffective, and means actuable by said pick-up bar for rendering said repositioning means effective.

7. The combination with a typewriter car- I riage, of a cross-totalizer, means to cause the cross-totalizer to travel intermittently with said carriage, back-spacing means for said carriage, a broken connection between said backspacing means and said cross-totalizer carriage, and means for shifting said connection to render it effective to be actuated by the back-spacing means to reposition said cross-totalizer.

8. The combination with a typewriter carriage and ,a plurality of totalizers arranged to travel therewith, of a cross-totalizer, pickup means and releasing means for causing the cross totalizer to travel intermittently with said carriage, back-spacing means, and a connection from said backspacing means for repositioning said crosstotalizer to register it denominationally with one of the totalizers on said typewriter'carriage, said connection being at times ineffective when the cross-totalizer is in a normal position, so as to permit a back-spacing movement of the typewriter carriage without disturbing said cross-totalizer.

9. The combination with a typewriter carriage. of .a cross-totalizer carriage, a crosstotalizer thereon, a train of mechanism extending between said cross-totalizer carriage and said typewriter carriage, pick-up devices and releasing means engaging with said train of mechanism to cause said cross totalizer to travel intermittently with said typewriter carriage, a back-spacer key, and means actuable by said train of mechanism after its release from said pick-up devices, for rendering said back-spacer key effective intermittently: during the travel of said typewriter carriage. to reposition said crosstotalizer relatively to said typewriter carriage.

ll). The combination with a typewriter carriage. of a cross-totalizer carriage, a cross-totalizer thereon. a train of mechanism. including a pick-up bar. extending between said cross totalizercarriage and said typewriter carriage, pick-up devices and releasing means, engaging with said train of mechanism to cause said cross-totalizer to travel intermittently with said typewriter carriage. a lmck-spacer key, and means controlled by said pick-up devices and actuable by said pickup bar after its release from said pick-up devices for rendering said backspacer key effective intermittently during the travel of the typewriter carriage to re"- connect said cross-t-otalizer carriage with said typewriter carriage.

11-. The combination with a typewriter carriage, of a plurality of adjustable devices arranged to travel therewith, a cross-totalizer,- a train of mechanism extending between said cross-totalizer'and said carriage, said train of mechanism engaging with said adjustable devices to cause said cross-totalizer to travel intermittently with said ear riage. a back-spacer key, a connection from said laiek-spacer key, and means for automatically rendering said connection effective so that it may, when actuated by the back-spacer key, reposition the cross-t0- talizer.

12. The combination with a typewriter carriage and a plurality of totalizersarranged to travel therewith, of a cross-totalizer carriage, a cross-totalizer thereon, a train of mechanism extending between said cross-totalizer carriage and said typewriter carriage, means engaging with said train of mechanism to cause said cross-totalizer carriage to travel intermittentlywith said typewriter carriage, a back-spacer key, a connection from said back-spacer key, and means for intermittently rendering said connection effective so that it may, when actuated by the back-spacer key, engage with said train of mechanism to reconnect the cross-totalizer carriage with the typewriter carriage to re-register the cross-totalizer denominationally with one of the toeffectiveness on the position of the type writer carriage and actuable by said train of mechanism. a

- 14. The combination with a typewriter *arriage, of a cross-totalizer carriage, a cross-totalizer thereon, back-spacing mechanism for said typewriter carriage, repositioning means for said cross-totalizer carriage actuable by said back-spacing mechanism, means for rendering said repositioning means effective, said rendering means comprising a settable intermediate element which is set automatically to an effective position when the typewriter carriage enters a computing zone, and means for actuating said element in its set position, immediately after the typewriter carriage passes out of the computing zone, so as to render said repositioning means effective.

15. The combination with a typewriter carriage and a plurality of totalizers arranged at columnar positionson said typewriter carriage, of a cross-totalizer carriage, a cross-totalizer thereon, a train of mechanism comprising a pick-up bar, pick-up dogs arranged at columnar positions on said typewriter carriage corresponding with those of said totalizers, said pick-up dogs being adapted to engage with said pick-up bar at various ositions 1n the travel of the typewriter carriage, a back-spacer key, and an element engaged by said pick-up do s and actuated thereby to move an interme iate element, carried thereby, to an effective position, so that the pick-up bar upon its release, from a pick-up dog, is effective to actuate said intermediate element to render said back-spacer key effective to reconnect said cross-totalizer carriage with said type writer carriage, to register the cross-totalizer denominationally with one of the totalizers on said typewriter carriage.

16. The combination with a typewriter carriage, of a cross-totalizer, a train of mechanism extending from said cross-totalizer to a position adjacent said typewriter carriage, pick-up meansfor connecting said train of mechanism with said typewriter carriage to cause the crosstotalizer 'totravel with said typewriter carriage, releasing means to render the pick-up means ineffective when the cross-totalizer has traveled through a computing zone, a back-spacer key, normally ineffective back-spacer-key-actuated means for repositioning said cross-totalizer, a controlling device for said normally ineffective means, and means for automatically operating said controlling device to render said normally ineffective means effective, so that said cross-totalizer may be positioned denominationally relatively to the typewriter carriage by an actuation'of the back-spacer key.

17. The combination with a typewriter carriage, of a cross-totalizer, means including a pick-up element to cause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carriage, a normally ineffective connection from said back-spacer to reposition said cross-totalizer, and means including an intermediate element for rendering said connection effective,

said intermediate element being actuable by said pick-up element.

'18. The combination with a typewriter carriage, of a plurality of adjustable elements traveling therewith, a cross-totalizer, means including apick-up element-to cause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carriage, a normally ineffective connection from said back-spacer to reposition said cross-totalizer, and means including an intermediate element for rendering said connection effective, said intermediate element being actuable by any one of said traveling elements when the typewriter carriage is moved in a reverse letter-feed direction.

19. The combination with a typewriter carriage, of a plurality of adjustable elements traveling therewith, a cross-totalizer, means including a pick-up element to cause said totalizer to travel intermittently with said carriage, a back-spacer for said type ing to effect the movement of said interme-- diate element.

20. The combination with a typewriter carriage, of a plurality of. adjustable elements traveling therewith, a cross-totalizer, means including a pick-up element to cause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carrlage, a normally ineffective con-- nection from said back-spacer to reposition said cross-totalizer, means including an intermediate element for rendering said connection effective, and a swinging element, said intermediate element being pivotally mounted on said swingingelement, said adjustable elements engaging with said swinging element tomove' said intermediate element to an effective position to be actuated by said pick-up element upon the return movement of the latter to normal position, thus rendering the connection from the backspacer effective.

21. The combination with a typewriter a reverse letter-feed movement of the type writer carriage to actuate said intermediate element, thereby rendering said connection from the back-spacer effective, the pick-up element acting as a fulcrum for the intermediate element during its movement, while the pivot for said intermediate element on said swinging element acts as a point of application for the swinging element to move said intermediate element.

22. The combination with a typewriter carriage, of a plurality of adjustable elements traveling therewith, a cross-totalizer, means including a pick-up element to cause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carriage, a normally ineffective connection from said back-spacer to reposition said cross-totalizer, means including an intermediate element for rendering said connection effective, a swinging lever, and a shoe on said swinging lever, said intermediate element being pivotally supported on said swinging lever and settable to an effective position through the ii'itermediary of said adjustable elements which engage with said shoe on said swinging lever, said intermediate element being actuable as a lever of the first order by said pick-up element, to render said connection from the back-spacer effective.

23. The combination with a typewriter carriage, of a plurality of adjustable elements traveling therewith, a cross-totalizer,

means including a pick-up element to cause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carriage, a normally ineffective connection from said back-spacer toreposition said cross-totalizer, means including an intermediate element for rendering said connection effective, a swinging lever, and a shoe on said swinging lever, said intermediate element being pivotally supported on said swinging lever, said adjustable elements being effective during the movement of the *arriage'in the reverse letter-feed direction .to actuate said intermediate element to render said connection from the back-spacer effective, said pivoted element, during its actuation, serving aS a lever of the third order, and said pick-up element serving at this time as a fulcrum for said pivoted element.

24. The combination with a typewriter carriage, of a plurality of pick-up devices traveling therewith. a cross-totalizer, means engaging with said pick-up devices to cause said cross-totalizer to travel intermittently with said carriage, back-spacing means for said carriage, means aetuable by said backspacing means to reconnect said'cross-totaL' izer with a previously-engaged pick-up device. and means for retaining said reconnee-ting means in its effective position.

25. The combination with a typewriter carriage, of a cross-totalizer, means to cause said cross-totalizer to travel intermittently with said carriage, back-spacing means for said carriage, means actuable by said back-- spacing means to reposition said cross-total izer relatively to said typewriter carriage, shifting means for said repositioning means,

and means to prevent a shifting movement of said repositioning means during the actuation thereof by said back-spacing means.

26. The combination with a typewriter carriage. of a cross-totalizer, pick-up means and releasing means to -ause said cross-totalizer to travel intermittently with said carriage, back-spacing means for said carriage, means actuable by said back-spacing means to reposition said cross-totalizer relatively to said typewriter carriage. a spring for retaining said repositioning means in an ineffective position, means for rendering said repositioning means effective, and means for retaining said repositioning .means in its effective position against the action of said spring, during the actuation of said repositioning means by said backspacing means;

27. The combination with a typewriter carriage, of a plurality of pick-up devices traveling therewith. a cross-totalizer. means engaging with said pick-up devices to cause said c'ross-totalizer to travel intermittently with said carriage, a back-spacer for said carriage, repositioning means, for said crosstotalizer, comprising a normally ineffective connection from saidbzick-spacer. means including an intermediate element for renderingsaid repositioning means effective, and a yielding connection between said intermediate element and said repositioning means,

to permit an actuation of said intermediate element without effecting said repositioning connection,

28. The combination with a typewriter carriage, of a plurality of adjustable devices arranged to travel therewith, a crosstotalizer carriage, a cross-totalizer thereon, a'train of mechanism comprising a connecting member extending from said cross-totalizer carriage and engaging individually with said adjustable devices, so as to cause said cross-totalizer to travel intermittently with said typewriter carriage, a back-spacer key for said typewriter carriage, a normally ineffective connection from saIdback Spacer key to reposition said cross-totalizer relatively to the typewriter carriage by reconmeeting said train of mechanism with the previously-engaged adjustable device, means for rendering said connection effective, said connection comprising a pivoted element, and means controlled by said adjustable devices to render said pivoted element effective, said connecting member being effective after its release from one of the adjustable devices to actuate said pivotedelement, thereby rendering said repositioning means effective,

29. The combination with a typewriter carriage, of a cross-totalizer carriage, across-totalizer thereon, a train of mechanism comprisinga pick-up barv extending between said cross-totalizer and said typewriter carriage, dogs on said typewriter car'- riage adapted to engage individually with said pick-upbar at various intervals during the travel of the typewriter carriage, means for releasing said pick-up bar from said dogs, to permit the cross-totalizer to return to its normal position immediately after the typewriter carriage passes out of the computing zone. a back-spacer key for said typewriter carriage, a connection from said back-spacer key, normally ineffective, for reconnecting said 'pick-up bar with the previously-engaged dog; means for rendering sald connection efi'ective, said means comprismg a pivoted element, means for renderlng said pivoted element effective, and

said pivoted element to render said connection effectlve by the return movement of said plck-up bar.

30. The combination with a typewriter.

means on said pick-up bar for actuating .ment, means for rendering said pivoted element effective, means on said pick-up bar for actuating said pivoted element to render said connection effective by the return movement of'said pick-up bar, and means for retaining said connection in its effective position during an actuation thereof, so that the pick-up bar may move out of engagement with the pivoted element to be reconnected with one of said dogs.

31. The combination with a typewriter carriage, of a plurality of adjustable pickup devices arranged at columnar positions of said carriage, a cross-totalizer, means engaging with said adjustable devices to cause said. cross-totalizer to travel intermittently with said typewriter carriage, back-s acing means for said carriage, and means e ective, when said carriage is backed to bring a columnar position thereof to the printing point to render said back-spacing means effective, so that it may, when actuated, reconnect said cross-totalizer with the previously-engaged adjustable device.

32. The combination with a typewriter carriage, of a cross-totalizer, means to causethe cross-totalizer to travel intermittently with said carriage, back-spacing means for said carriage, and means controlled by said carriage when it is backed into a computing zone to render said backspacing means effective to reposition said cross-totalizer rel- 5 atively to said typewriter carriage.

33. The combination with a typewriter carriage, of a cross-totalizer, means to cause the cross-totalizer to travel intermittently i with said carriage;back-spacing means for 9 said carriage, means controlled by the 'typewriter carriage when it is backed, substantially into a computing zone,'to render said back-spacing means effective, to reposition said cross-totalizer relatively to said typewriter carriage, numeral keys, and means for rendering said numeral keys ineffective when said carriage is moved, as above stated, without the aid'of the back-spacing means.

34:. The combination with a typewriter carriage, of a cross-totalizer, means to cause the cross-totalizer to travel intermittently with said carriage, back-spacing means for said carriage, means controlled by the typewriter carriage, when it is backed substan- 12 tially into a computing zone, to render said back-spacing means effective to reposition said, :ross-totalizer relatively to said type writer carriage, numeral keys, normally ineffective locking means for said numeral writer carriage, numeral keys, means for rendering said numeral keys ineffective when said carriage is moved, as above stated, without the aid of said back-spacing means, and means for rendering said keys effective.

36. The combination with a typewriter carriage, of a cross-totalizer,.means to cause the cross-totalizer to travel intermittently with said carriage, a back-spacer key for said carriage, means controlled by the typewriter carriage, when it is backed substantially into a computing zone, to render said back-spacer key effective to reposition said cross-totalizer relatively to said typewriter carriage, numeral keys, and normally ineffective locking means for said numeral keys, rendered effective when said back-spacer key is rendered effective for repositioning the cross-totalizer, said locking means being rendered ineffective again when said backspacer key is actuated.

37 The combination with a typewriter carriage, of a plurality of adjustable elements traveling therewith, a cross-totalizer, means including a pick-up element tocause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carriage, a connection from said backspacer to reposition. said cross-totalizer, numeral keys, locking means for said numeral keys, and means'including an intermediate element. for rendering said locking means effective, said intermediate element being actuable by any one of said adjustable elements when the typewriter carriage is moved in a reverse letter-feed direction into a computing zone, said pick-up element at t h1s time being relatively stationary, but assisting to effect the movement of said intermediate element.

38. The combination with a typewriter carriage, of a cross-totalizer, means to cause said cross-to'talizer to travel intermittently with said carriage, back-spacing means for said carriage, numeral keys, locking means for said numeral keys, a normally ineffective connection from said back-spacing means to reposition said cross-totalizer, and means for simultaneously rendering said connection andsaid locking means effective.

39. The'combination with a typewriter carriage, of a cross-totalizer, means to cause the ,cross-totalizer to travel intermittently with said carriage, back-spacing means for said carriage, numeral keys, locking means for said numeral keys, a normally ineffective connection from said back-spacing means to reposition said cross-totalizer and means, rendered effective by the typewriter carriage when the latter is backed substantially into a computing zone, for simultaneously rendering said connection and said locking means effective and for retaining said looking means effective if the carriage is moved, as above stated, without the aid of said back spacing means. I

40. The combination with a typewriter carriage, of a cross-totalizer, means including a pick-up element for causing said crosstotalizer to travel intermittently with said carriage, a back-spacer for said carriage, a normally ineffective connection from said back-spacer to reposition said cross-totalizer, numeral keys, locking means for said numeral keys, and an intermediate element, actuable by said pick-up element, to simultaneously render said connection and looking means effective.

41. The combination with a typewriter carriage, of a pluralit of adjustable elements traveling therewith, a cross-totalizer, means including a pick-up element for'caus- 'ing said cross-totalizer to travel intermittently with said carriage, a back-spacer for said carriage, a normally ineffective connection from said back-spacer to reposition said cross-totalizer, numeral keys, locking means for said numeral keys, and an intermediate element actuable by any one of said traveling elements, when the typewriter carriage is moved in a reverse letter-feed direction to on said swinging l'ever, said intermediate element being pivotally' supported on said swinging lever and being settable to an effective position through the intermediary of said adjustable elements which engage with said shoe on said swinging lever, said pivoted element being actuable as a lever of the first order by said pick-up element to simultaneously render said connection and said locking means effective.

43. The combination with a typewriter carnage, of a cross-totahzer, means to cause said cross-totalizer to travelintermittently with said carriage, a back-spacer key for said carriage, numeral keys, locking means for said numeral keys, a normally ineffective connection from said ,back-spacer key to reposition said cross-totalizer, means, rendered efi'ectivejby said typewriter carriage when the latter is backed substantially into a computing zone, for simul taneously rendering said connection and said locking means effective and for retaining said locking means effective when the carriage is so moved without the aid of said back-spacer key, and means controlled by said back-spacer key to release said lockin means.

44. The combination with a typewriter carriage, of a cross-totalizer carriage, a crosstotalizer thereon, a train of mechanism, means engaging with said train of mechanism to cause said cross-totalizer to travel intermittently with said typewriter carriage, said train of mechanism comprising a pickup bar pivotally connected to a bell-crank, said bell-crank being connected to rock a shaft by an arm extending therefrom, said shaft having another arm connected to said cross-totalizer carriage, and a return spring for said train of mechanism.

45. The combination with a typewriter carriage, and'of a cross-totalizer carriage, a cross-totalizer thereon, a train of pick-up mechanism extending between said crosstotalizer carriage and said typewriter carriage, said pick-up mechanism comprising a pick-up barpivotally mounted on a rockarm, said rock-armbeing connected through intermediate mechanism to one end of a rockshaft, an arm rigidly secured to the other end of said rockshaft, said two arms moving in parallelism, and a link connecting said last-mentioned arm with'said' crosstotalizer carriage.

46. The combination 'with a typewriter carriage, of a cross-totalizer carriage, a cross-totalizer thereon, a train of pick-up mechanism extending between said crosstotalizer carriage and said typewriter car riage, said pick-up mechanism comprising a pick-up bar pivotally mounted on a bell-- crank, a second bell-crank connected to move in parallelism with said first-mentioned bell-crank, a link connecting said second mentioned bell-crank with said cross-totalizer, and a return spring for said mechanism.

47. The combination with a typewriter carriage, of a cross-totalizer carriage, a cross-totalizer thereon, a train of mechanism comprising a bell-crank extending between said cross-totalizer carriage and said typewriter carriage, an actuating element connected to said bell-crank, a back-spacer kev, a normally ineffective connection from said back-spacer key; and means for rendering said connection effective, so that it may engage with said actuating element to reposition said cross-totalizer relatively to said typewriter carriage.

48. The combination with a main carriage, of a sub-carriage, means to cause said subcarriage to travel intermittently with said main carriage, back-spacing means for said main carriage, and 'means for rendering said back-spacing means effective so that said sub-carriage may be repositioned rela tively' to said main carriage.

49. The combination with a main carriage and a plurality of adjustable devices arranged thereon, of a sub-carriage, a train of mechanism extending between said subcarriage and said main carriage, said train of mechanism engaging with said adjustable devices to cause said subcarriage to travel intermittently with said main carriage, a back-spacer key, a nection from said back-spacer key, and means for automatically rendering said connection eiiective so that it may, when actuated by the back-spacer key, reposition the sub-carriage relatively to said main carriage.

50. The combination with a main carriage and a lurality of pick-up devices thereon, of a su -carriage, means engagingwith said pick-up devices to cause said sub-carriage to travel intermittently with said main carriage, back-spacing means for said main carriage, means actuable by said back-spacing means to reconnect said sub-carriage with a previously-engaged pick-up device, and means for retaining said reconnecting means in its efi'ective position.

51. The combination with a main carriage and a plurality of adjustable devices thereon, of a sub-carriage, a train of mecha-V nismcomprising a connecting member extending from said sub-carriage-and engaging individually with said adjustable devices, releasing means for said connecting member to cause said sub-carriage to travel intermittently with said main carriage, a

back-spacer key for said main carriage, a

normally ineffective connection from said back-spacer key to reposition said sub-carriage relatively to the main carriage by reconnecting said train of mechanism with the previously-engaged adjustable device, means to render said connection efi'ective, said connection comprising a pivoted element, and means controlled by said adjustable devices for rendering said pivoted element eflective, said connecting member being effective after its release from one of the adjustable devices to actuate said pivoted element, thereby rendering said connection efi'ective.

52. The combination with a main carriage and a plurality of adjustable devices arranged at'columnar positions thereon, 01

a sub-carriage, means to cause said subcarriage to travel intermittently with said main carriage, back-spacing means for, said main carriage, and means, effective when said main carriage is backed to bring a columnar position thereof to the printing point, to render said back-spacing means effective, so that it may, when actuated, reconnect said sub-carriage with the previously-engaged adjustable device.

53. The combination with a main carriage, of a sub-carriage, means to cause the sub-carriage to travel intermittently with said main carriage, back-spacing means for said main carriage, means controlled by the main carriage, when it is moved back to bring a columnar position to the printing point, to render said back-spacing means effective to reposition said sub-carriage relatively to said main carriage, numeral keys, and means for rendering said numeral keys ineffective when said main carriage is moved, as above stated, without the aid of said back-spacing means.

54. The combination with a main carriage, of a sub-carriage, means to cause said sub-carriage to travel intermittently with said main carriage, back-spacing means for said main carriage, numeral keys,- locking means for said numeral keys, a normally-ineffective connection .from said back-spacing means to reposition said subcarriage, and means for simultaneously rendering said connection and said locking means effective.

55. .The combination with a main carriage, of a sub-carriage, means including a pick-up element for causing said sub-carriage to travel intermittently with said main carriage, a back-spacer for said main carriage, a normally-ineifective connection from said back-spacer to reposition said sub-carriage, numeral keys, locking means for said numeral keys, and means including an intermediate element for simultaneously rendering said connection and said locking means effective, said: intermediate element being actuable by said pick-up element.

56. The combination with amain carriage, of a plurality of adjustable elements thereon, a sub-carriage, means including a pick-up element to cause saidsub-carriage to travel intermittently with said main carriage, a back-spacer for said main carriage, a normally ineffective connection from said back-spacer to reposition said sub-carriage, numeral keys, locking means for said numeral keys, means including an intermediate lever for simultaneously renderin said connection and .said locking means e fective, a swinging lever, and a shoe on said swinging lever, said intermediate lever being pivotally supported on said swinging lever and being settable to an effective posit1on throughthe intermediary of said adjustable elements which engage with said shoe on said swinging lever, saidpivoted lever being actuable as a lever of the first order by said pick-up element to simultane ously render said connection and said locking means effective.

57. The combination with printing mechanism, including a traveling carriage and numeral keys, of a cross-totalizer, means to cause said cross-totalizer to move with said traveling carriage through a computing zone and to be released when said carriage passes out of said zone, means toreturn said cross-totalizer to its normal position, a lock normally effective to prevent simultaneous depression of more than one numeral key, and means whereby, upon disconnection of' said cross-totalizer from said travelingcarriage, while the latter is in a computing zone. said numeral-key-lock will be rendered effective to prevent the depres sion of any of said numeral keys.

58. The combination with printing mechanism, including a traveling carriage and numeral keys, of a cross-totalizer, means to cause said cross-totalizer to move with said traveling carriage through a computing zone and to be released when said carriage passes out of said zone, means to return said cross-totalizer to its normal position, a lock normally effective to prevent simultaneous depression of more than one numeral key, means whereby, upon disconnection of said cross-totalizer from said traveling carriage, while the latter is in the computing zone, said numeral-key-lock will be rendered effective to prevent the depression of any of said numeral keys, and means to restore said numeral-key-lock to its normal condition.

59. The combination with printing mechanism, including a traveling carriage and numeral keys, of a cross-totalizer, means to move said totalizer through a computing zone with said carriage and to return the same to normal position, a numeral-key-lock normally permitting the depression of only one key at a time, means efiective when said cross-totalizer becomes released fromits moving means, while passin through a computing zone, to render said ock effective to prevent the depression of any of said numeral keys, and means to restore said cross-totalizer to the control of said movin means and to restore said numeral-key-loc to normal condition.

60. The combination with printing mechanism, including a traveling carriage and numeral keys, of a cross-totalizer, means to move said totalizer through a computing zone with said carriage and to return the same to normal position, a numeral-kc -1ock normally permitting the depression 0 only one key at a time, means rendered efi'ective when the traveling carriage passes out of the computing zone for said cross totalizer, to render said lock effective to lock all of said numeral keys, and means to release said lock.

'61. The combination, with printing mechanism, including a traveling carriage and numeral keys, of a cross-totalizer, means to move said totalizer through a computing zone with said carriage and to return the same to normal position, a numeral-key-lock normally permitting the depression of only one key at a time, means actuated by said cross-totalizer, when returned to its normal position after passage through the computing zone, for rendering said numeral-keylock effective to prevent the depression of any of said numeral keys, and means to restore said numeraLkey-lock to its normal condition.

62. The combination with axtypewriter carriage, of a cross-totalizer, means including a pick-up element to cause said totalizer to travel intermittently with'said carriage, a back-spacer for said typewriter carriage, a connection from said back-spacer to reposition said cross-totalizer. numeral keys, locking means for said, numeral keys normally permitting the depression of only one of them at a time, and means including an intermediate element for rendering said lockingmeans effective, said intermediate element being actuable by said pick-up element.

63. The combination with a typewriter carriage and a plurality of adjustable elements traveling therewith. of a cross-totalizer. means including a pick-up element to cause said totalizer to travel intermittently with said carriage, aback-spacer for said typewriter carriage, a connection from said back-spacer to reposition said cross-totalizer. numeral keys, locking means for said numeral keys, means including an intermediate elementfor rendering said looking means eflect-ive, and a swinging element, said intermediate element being pivotallymounted on said swinging element, said adjustable elements engaging with said swinging element to move said intermediate element to an effective position to be actuated by said pick-up element during the return movement of the latter to normal position, thus rendering the said locking meansefi'ective. v

64. The combination with a typewriter carriage and a plurality of adjustable elements traveling therewith, of a cross-totalizer, means including a pick-up element to cause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carriage, a connection from, said back-spacer to reposition said cross-totalizer, numeral keys, locking means for said numeral keys, means including an intermediate element for rendering said locking means effective, and a swinging element, said intermediate element being pivotally-supported thereon, said adjustable elements engaging with said swinging element during a reverse letter-feed movement of the typewriter carriage to actuate said intermediate element, thereby rendering said locking means effective, the pick-up element acting as a fulcrum for the intermediate element during its movement, while the pivot for said intermediate element on said swinging element acts as a point of application for the swinging element to move said intermediate element.

65. The combination with a typewriter carriage and a plurality of adjustable elements traveling therewith, of a cross-totalizer, means including a pick-up element to cause said totalizer to travel intermittently with said carriage, a back-spacer for said typewriter carriage, a connection from said, back-spacer to reposition said cross-totaL izer, numeral keys, locking means for said numeral keys, means including an inter-- mediate lever 'for rendering said locking means effective. a swinging lever, and a shoe on said swinging lever, said intermediate lever being pivotally-supported on said swinging lever andsettable to an effective position through the intermediary of said adjustable elements which engage with said shoe on said swinginglever, said pivoted lever bein actuable as a lever of the first order by saidpick-up element, to render said locking means effective.

66. The combination of typewriting mechanism, including a traveling carriage and numeral keys, ofcomputing mechanism ope 'ated by said numeralkeys, comprising a cross-totalizer, means to move said crosstotalizer through a computing zone with said carriage and to return it to normal position, means actuated b said cross-totalizer, when released by t e passage of the typewriter carriage out of the computing. zone, to prevent printing of numerals in the first letter-space following a computing zone, and means to release said preventing means.

67 T he combination of t pe-writing mechanism, including a traveling carriage and numeral keys, of computing mechanism operatedby said numeral keys, comprising a cross-totalizer, means to move sald crosstotalizer through a computing zone with said carriage and to return it to normal osition, numeral-key-locking means norma lly permitting the depression of only one of said keys at a time, and means whereby said locking means may be made effective to lock all of said numeral keys upon passage of said traveling carriage into a' computing zone. I p

68. The combination with typewriting mechanism, including a. traveling carriage