US1285297A

US1285297A - Combined type-writing and computing machine.

Info

Publication number: US1285297A
Application number: US70659112A
Authority: US
Inventors: Holmes Marshall
Original assignee: UNDERWOOD COMPUTING MACHINE CO
Current assignee: UNDERWOOD COMPUTING MACHINE CO
Priority date: 1912-06-29
Filing date: 1912-06-29
Publication date: 1918-11-19
Anticipated expiration: 1935-11-19

Description

- H. MARSHALL. COMBINED TYPE WRITING AND COMPUTING MACHINE. APPLICATION FILED JUNE 29. I9I2.

1 ,285,297. Patented Nov. 19, 1918.

4 SHEETSSI'IEET I- H. MARSHALL.

'COMBlNED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED JUNE 29.1912- Patented Nov. 19, 1918.

4 SHEETSSHEET 2 H. MARSH-ALL.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION HLED JUNE 29.1912

Patented Nov. 19, 1918.

4 SHEETS-SHEET 3.

II [I II II H. MARSHALL.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION EILED JUNE 29.1912.

Patented Nov. 19, 1918.

4 SHEETSSHEET 4- to correspond with certain columns of UNITED STAT S PATENT OFFICE.

HOLMES MARSHALL, 0F PLAINFIELD, NEW JERSEY, ASSIGNOR, BY MESNE ASSIG MENTS, '10 UNDEBWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, N. Y., A

conronurron' or NEW YORK. I

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

speculation of 1mm Iatent.

Application filed June 29, 1912. Serial No. 706,591.

which the following is a specification.

This invention relates to a combined type- I writing and computing machine of a type in which a series of computing heads are arranged to come into action individualllly t e work sheet on the typewriter carriage, and in which when in action, each head receives all of the digits of a number at one stroke of a general operator from a pin set itemregistering mechanism.

In the adaptation of this invention herewith shown, separate numeral keys are used for controlling the computing mechanism from those used to print numbers in an ordinary typewriting operation. special means is used to print the numbers on the work sheet when the machine is used for computing. This means includes a printing register which is connected successively are registered for printing,

computing, andthen are run up and printed to the several computing heads as they come into action, in such a way that the wheels thereof are rotated amounts corresponding to the digits which are transferred from the pin set item-registering mechanism to the wheels of the active computing head by one stroke of the eneral operator.

After the digits registered by the pin set mechanism have been transferred to the ac tive computing head and to the printing re ister, the return movement of the general operator swings theprinting register bodily against the platen to print'a number on the work sheet carried by the platen. After each printing the printing register is returned and the wheels thereof automatically reset to zero, so that the number printed each time is an item'number, and corresponds to the series of keys struck. In other-words, the several digits of a number as well as for all at once.

Arrangement is also made whereby the item printing mechanism is shifted out of the way and out of action when the change 1s made from one computing head to another, and when the typewriter carriage is jumped from one column to a new column. The computing heads in this instance are shown to be carried -by a rotatable turret with an escapement mechanism enabling an automatic movement to bring the computing heads, successively and in order, into action. Manual means is also provided whereby this turret can be rotated to selectively control the activity of any one of the computing heads. This manual means is shown to carry an indicator whereby the particular computing head in action can be readily ascertained.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a vertical section taken from front to rear of the machine.

Fig. 2 is a fragmentary vertical section taken at right angles to the section of Fig. 1, and showing the connections whereby the printing register is actuated to run up the digits run up by the particular computing head in action, and also showing the means for reciprocating the printing register.

Fig. 3 is a top plan View with parts broken away to show the underlying structure.

Fig. i is a vertical sectional view, show ing a detail of the section arrangement whereby the printing register is reciprocated during a single stroke of the general operator. 1

Fig. 5 is a horizontal section of certain of the parts shown in Fig. 4.

Fig. 6 is a fragmentary vertical section, showing one of the printing wheels of the printing register and the means whereby the printing wheel is returned to zero after each printin action.

Fig. -is a view partly in section, in Fig. 6.

Fi 8 is an enlarged vertical section, showing the connections for drivin the printing register from the active printing head, thrown to an inactive position.

Fig. 9 is Patented Non-19, 1918...

partly in elevation and of the mechanism shown a bottom plan view, showing the escapement and detent mechanism for the Fig. 9..

Fig. 11 is a fragmentary rear view in elevation of one of the ,computing heads.

Fig. 12 is a fragmentary-horizontal section, showing the indicating disk for designating which of the computing heads is in action.

Fig.113 is a skeleton perspective view, showing the connection between the tabulating mechanism and the frame which carries the driving connection between the computing head and the printing register. This view illustrates how the printing mechanism is thrown out of operation while the tabulating mechanism is thrown in action to cause the movement of the typewriter carriage.

Fig. 14 is a side'view in elevation partly broken away to show. the underlying structure, and showing the printing register thrown up against the platen during the return movement of the general operator.

Numeral keys 1 have stems. 2' extending through guide openings in a block 3, and held up bysprings 4. Thesestems project below said block to positions just over a set of computation 'pins 5 mounted upon rack bars 6, in the manner set forth inthe application of Frederick A. Hart, No.

466,836, filed December 10, 1908.

By depressing the keys, there may be depressed or set such pins 5 as correspond to the number which is to be computed. The bars 6 have racks 7 to mesh with idle pinions 8, which mesh with computation gears 9, the latter meshing with gears 10 on dial wheels 11.

After depressing the keys 1, there is operated a handle 12, which is fixed on a rock shaft 13, extending across the machine and having at its ends segments'l4 to mesh with pinions 15, the latter meshing with a pair of racks 16, connected "by a cross bar 17 the parts from 12 to 17 forming a general operator for the computation racks and gears. When the general operator moves forwardly it carries the 'cross bar 17 into engagement with such of the pins 5 as have been set up on the rack bars 6, so as to advance the rack bars 6 forwardly, bringing the racks 7 thereon into mesh with the idle pinions 8 to rotate the same and thus transmit a rotation to the dial wheels 11 corresponding to the particular pins 5 set on the accordant rack bars 6.

gageable by a starting tooth 21 upon com-' drum which rotates the turret carryputation gear 9; and also com rising a three-toothed pinion 22, to mesh with a tentoothed gear 23, connected to the next higher computation gear 9.

Each train, after being started by said tooth 21, is actuated by one of a series of spurs 24, carried upon a shaft 25, which makes a revolution once in each return movement of the general operator 12. One

of the general operator racks 16 is connected by two

gears

26 and 26 to a pinion 27 which has a clutch connection to the spur-shaft 25 (Fig. 8) said connection comprising a ball 28, seated in a pocket 29 in shaft 25, and

pressed by a spring 30 into a recess 31 in the pinion 27, so that said pinion may move idly during the forward stroke. of the gen- I eral operator, but may during the return stroke, turn said shaft a full revolution. The spurs engage such pinions 20 as may have been displaced by the starting teeth 21 on the computing wheels, and complete the operations of the tens-carrying trains. Spring detents 32 and 33 are provided for the gear 23 and the pinion 20, respectively.

Upon the return of the general operator to normal position, the cross-bar 17 engages shoulders 34 upon the computation racks 6, and return the latter to normal positions; and a plate 35 is-raised to reset the depressed pins 5, in the manner set forth insaid Hart application.

The

wheels

8, 9, 10 and 11, with their appointments, are mounted in a casing or support 36, to form a computing head which is shown at Fig.- 2 in position for engagement with the racks 7 and the spurs 24, but is shiftable out of such position; being for this purpose mounted upon a carrier or carriage in the form of a revoluble turret 37, which is loosely mounted upon a stationary vertical shaft 38. By revolving this turret, the computing head 36 is moved out of working position at Fig. 1, and another computing head 41 on said turret may be moved into working position. The turret may again be shifted, and the computing head 41 moved out of working position, and another computing head 42 may be moved into working position; and so on, there being preferably five more computing heads. marked from 43 to 47 inclusive, and these computing heads being arranged at equidistant points from the shaft 38 and from one another.

The turret may be revolvedby a spring 48 coiled around shaft 38 and contained in a barrel 49, which is fixed to the hub of the spring barrel may be a series of eight equidistant'teeth or pins 50, to co5perate with escapement dogs 51, 52 mounted on a rocker 53 (Fig. 10), the latter pivoted on the frame-work and connected by an arm 54 and link 55 to a lever 56, so that upon depression of said lever, the dog 51 is permitted to escape, and the spring 48 swings the turret, together with the computing heads thereon, to displace the computing head that has just been actuated, and bring its succeeding computing headto a position to be operated upon, by the key-eontrolled mechanism.

One end of the spring 48 is fixed to shaft 38, which extends from the bottom to the top of the casing 58 of the machine, and has bearings 58, 58", whereby it may be rotated, for restoring the tension of spring 48.

In order to rewind the spring 48, use is made of the forward stroke of the general operator to put a renewed tension on this spring. For this purpose, there is provided a spring-pressed pawl 59, mounted on a bar 60 on the general operator,'which pawl is so arranged that while it will engage the ratchet wheel 61 on the shaft 38 idly during the return stroke of the general operator, it will engage the same effectively during the forward stroke of the general operator, to cause a rewinding of the spring. The ratchet wheel 61,. however, is loosely mounted on the shaft 38 but has a slip friction clutchengagement therewith. For this purpose, there is fixed on the shaft 38, a disk 62 and a collar 185, between which the ratchet 61 is located. The connection between the ratchet 61 and the shaft 38 is yieldingly maintained by one or more spring shims or washers 64, which are interposed between the facing sides of the disk 62 and the ratchet wheel 61. It will thus be evident that until the spring 48 is completely wound, this arrangement will form a positive enough connection between the ratchet wheel 61 and the shaft 38; but as soon as the spring is completely wound, the connec tionwill admit of slipping, so as to prevent any breakage of the parts.

To prevent the accidental reverse move ment of the shaft 38 to unwind the spring 48, there is provided on the shaft, a locking ratchet 63, which is engaged by a springpressed detent 62.

Computation may thus be performed upon the computing heads in succession, by the single set of racks forming a single actuating means. It will be understood that the racks are preferably normally out of mesh with the pinions. so as not to interfere with the niovement'of the turret.

While the lever 56 could be operated suc cessively a number of times to bring any desired computing head into action, this would be slow and for other reasons in this invention, inadvisable. There is therefore provided manual means whereby any computing head desired can be brought into action. For this purpose, the spring barrel 49 is provided with a gear which meshes with a gear 71 on stud shaft 72. The gear 71 is in turn driven by a gear. 73 on a vertically extending shaft 74. The upper end of the shaft 74 extends outside the casing 58 to a point convenient to the operator, where it is provided with a crank 75. It will thus be seen that the hand crank 75 can be rotated to rotate the spring barrel 49.

i In view of the escapement dogs 51 and 52, however, this rotation must of necessity be in a rearward direction, the dogs remaining inactive, but being jointed, as shown in Fig. 10, .so as to admit of a backward rotation of the spring barrel 49. That is to say, the dogs 51 and 52 are each formed in two sections 7 6 and 77 hinged together and held in normal position by means of aspring 78.

.The dogs are provided with stop pins 79 which prevent a pivotal movement of the section 77 when approached by the pins 50 in one direction, but admit of a pivotal movement of the section 77 when approached by the pins 50 in the opposite direction.

In order that it may be readily ascertamed which computing head is in action,

there is provided on the shaft 74 an indicator 80, shown in the form of a disk having on its upper surface numerals from 1 to 8, to correspond to the eight computing heads carried by the turret. These numbers are visible through a sight opening 81 in the casing 58.

which hear at their forward ends, arms 91 connected by means of links 92 to levers 98. The levers 93 rock bell cranks 94 to swing type bars 95 up rearwardly against the front side of a platen 96 mounted on a carriage 97. The carriage 97 is provided with the usual Underwood escapement mechanism which consists of a universal frame.

98adapted to be actuated by a heel 99 on each of. the type bars 95 when the latter swing upwardly to strike the platen. The universal frame 98 carries a pair of pawls 100 which coiiperate with an escapement ,jump movement as in skipping from one column to another. For this purpose, at the front of the machine there are provided tabulating keys 106 connected by means of stems 107 to arms 108 on rock shafts 109. These rock shafts likewise extend rearwardly, where they are provided with arms 110 which may have a pin and slot connection with vertically extending links 112. These links are connected to rock levers 113 which bear at their forward ends against the bottoms of vertical plungers 114. The plungers 114 are moved upwardly when their corresponding keys are operated to project in the path of stops 115 adjustably mounted on a rack 116 carried by the carriage 97.

All of the lungers 114 are provided with notches 117 fbrmin'g a shelf on which rests a universal lever 1.18 which is adapted to be rocked when any of the tabulating keys.

is actuated, so as to pull downwardly on a link 119 whereby an arm 120 is rocked upwardly at its forward end. This arm bears at its forward end a roller 121 resting on the under side of a smooth portion of the rack 103, so as to lift it out of mesh with the pinion 102, so as to enable the carriage to move forward freely underthe traction of its spring barrel 105, until one of the stops 115 comes into engagement with the plunger 114, which hap ens to be projected upwardly.

It will e seen by this arrangement that the numeral keys 82 of the typewriting mechanism are not connected to actuate the computing mechanism. It will also be seen that the computing keys 1 are not connected to actuate the printing mechanism of the numeral keys 82. For this reason there is provided in this case a special printing mechanism, whereby when the computing mechanism is operated, the numbers run up in the computing mechanism will be printed on the work sheet carried by the platen 96. For this purpose there is provided in superposed relation with the active position of the computing heads a driving mechanism or connection 122 whereby a printing register 123 may receive the digits of the number run up in the active computin heads.

The connection 122 inc udes a frame 124 (see Figs. 1, 8 and 13) mounted for vertical movement by means of pin and slot connections 125 and having downwardly extending guiding legs 126 which are adapted to engage with the side plates 36 on the active computing head'when in position,.to bring in register with the gears 10 thereof accord-- ant gears 127. The gears 127 are loosely mounted on a shaft 128 which is supported by the frame 124. Each of the gears 127 carries for rotation therewith a pinion 129 which meshes with the accordant one of a series of racks 130 carried by the lower ends of levers 131 pivotally mounted on a rod 132 carried by the frame 124. The upper ends of these rocking levers 131 carry other segment racks 133 which drive the wheels 134 of the printing register 123.

As will be seen by reference to Figs. 6 and 7, each of the wheels 134 comprises a hollow barrel or drum loosely mounted on a fixed shaft 135 secured to a reciprocating frame 136. On each of the wheels 134 there are provided raised types 137 numbered from 0 to 9. These numbers, when the printing register is forced up into engagement with the platen, as shown in Fig. 14, will act as type to print through the usual typewriter ribbon on the work sheet carried by the platen.

Loosely mounted on each of the barrels of each of the printing wheels 134, there is provided a gear 138 which has a one-Way pawl and ratchet connection with the barrel of the printing wheel. These gears 138 meshing with the racks 133, form a driving connection between the wheels 134 andthe racks for effecting an accumulating rotation of the printing wheels, but permitting a return motion of the racks without actuating the printing wheels.

In order that each printing wheel may return to zero after having printed a digit, there is provided within the barrel thereof, a spiral spring 139 which is connected at one end to a printing wheel, and is secured at its opposite end to the fixed shaft 135.

To hold the printing wheel in any adjusted position before printing, there is provided in each case a detent 140 which is adapted to engage in notches 141 located on the wheel in correspondence with the printing numbers or types 137. This detent is held normally in, the juxtaposed notch by means of a spring 142.

The oscillating frame 136 which carries the printing wheels 134 which together form theprinting register 123, is slidingly mounted in a guiding frame 143 so that the register can be swung or oscillated from a position such that its wheels mesh with the racks 133 to a position such that the type on the wheels strike against the front side of the platen 96.

The means fOr oscillating or reciprocating the printing register obtains its motive force from the general operator during the return stroke thereof. For this purpose there is provided, as will be seen by reference to Figs. 1, 4, 5 and 14, a gear 144 mounted loosely on a stud shaft 145, and meshing with one of the racks of the general operator. Also loosely mounted on the shaft 145 there is provided a mutilated bevel gear 146 which is rotated by the gear 144 during the return stroke of the general operator. For this purpose the gear 146 is provided with a socket 147 having a cam bottom 148. Within this socket or pocket 147 there is provided a roller or ball 149 which rests against a spring 150 in such a manner 147, so as to form a clutch connecting the gear 144 with the gear 146. This clutch arrangement is formed on a hub portion of the gear 146 which extends into an annular groove is slidmgly and pivotally mounted in of the gear 144. Duringtheinitial stroke, however, of the general operator, the rack 16 rotates the gear 144 (see Fig. 4) in a clockwise direction. so that the roller 149 is forced inwardly against the tension of spring 150 into the larger portion of the pocket 147, so that there is no clutch connection between the gear 144 and the gear 146, whereby the gear 146 remains sta tionary.

During the return motion, however, of the general operator, the gear 146 is rotated by the gear 144, so that the bevel segment thereof comes first into engagement with a bevel gear 151 and then in engagement with a bevel gear 152, both of which are secured to a shaft 153. By this engagement, the

shaft 153 is given first a rotation in one Cl1-' rection and then a rotation in the other direction. The upper end of the shaft 153 is provided with a bevel gear 154 meshing with a bevel gear 155 having secured for rotation therewith a gear 156. The gear 156 is arranged to mesh with a gear 157 (see Fig. 23 secured on a shaft 158, which a stationary frame 159. and rotatably mounted in the frame 124, so that it can move with the frame 124 to move the gear 157 into and out of mesh with the gear 156.

The shaft 158 is also provided with a pair of gears 160, which mesh with a pair of arcuate racks 161 carried by the reciprocating frame 136. which carries the printing register 123.

It will be seen that the return stroke of the general operator through the connecting gearing swings the printing .register up to the position shown in Fig. 14, and then back again to the position shown in Fig. 1. .During the return stroke, the detents 140 are released to-enablethe springs 139 to return the printing wheels to zero. For this purpose, each of the detents 140 is provided with a trip 162, which engages with a fixed bar 163 on the frame of the machine. These trips-162 are. pivotally mounted on the detents and heldby springs, so that they will yield inefiectively during the upstroke of the printing register 123. and will forma rigid intermediary during the downstroke of the printing register, causing the detents 140 to be drawn out of the sockets 141.

puting head to another, it is advisable at the same time to shift the typewriter carriage 97 so as to bring a fresh column of connected gears and segment racks.

When the shift is made from one com-.

downwardly beyond the arm 54 to a point where it connects with an arm 164 on a rock shaft 165. Rock shaft 165 extends to the rear of the machine. where it is pro vided with an arm 166 having a pin and slot connection with the downward extension of one of the links 112.

it will be seen that when the lever 56 is actuated, one of the plunger bars 114 will be lifted in the same manner as if the corresponding tabulating kev was actuated, thus attaining a jump movement of the carriage 97. It will readily be seen that when the computing heads are changing, and when the carriage is moving, it would be inadvisable to have the gearing connecting the computing head with the registering mechanism in coiiperation with the computing head, and also it would be inadvisable to have the drive from the general operator to the reciprocating mechanism for the register complete.

Lever 56, as will be seen by reference to Fig. 13, is in reality duplex, both parts, which move in unison, having portions extending beyond the pivot point to underlie pins 167 on the frame 124. As has been said above, the frame 124 has a pin and slot mounting 125, so that it is free to move upwardly when the lever 56 is depressed, thereby carrying the gears 127 out-of mesh with the gears 10, and also lifting the gear 157 out of mesh with the gear 156. When this occurs, the computing head in action can be readily replaced by another com- 106 puting head, andthere is no danger of the printing register 123 being brought in contact'with the platen while the platen is traveling with the carriage.

1n the use of the device, one of the comput- 105 ing heads is brought in register with the rack bars, so aS to be actuated thereby to register the proper numbers. The keys 1 are then struck, so as to set the accordant pins on the rack bars until the number which it is de- 110 sired to compute has been registered by the setting of the pins on the rack bars. The general operator is then moved forwardly by an actuation of the crank 12, so that the registered number is transferred to the computing head which happens to be in action. This computing head, in turn, transfers the several digits of this number to the printing register 123, through the intermediary of the The pawls 140 catch the printing wheels and hold them in their adjusted positions against the tension of springs 139.

During the forward motion of the general operator, the raising mechanism for the printing register has no effect, because the clutch connection is inactive. During the return motion of the general operator, however, the clutch connects the bevel gear 146 in driven relation with the gear 144, so that it'is rotated one complete revolution. During the first half of a revolution, it rotates the shaft 153 in such a direction as to drive the rack bars 161 upwardly, untilthe rinting register comes into the position s lown in Fig. 14. with the raised type thereon in engagement with the ribbon of the typewriting mechanism, so that the number which has been registered 'by'the computing mechanism will be printed on the work sheet. This number is the item. number, and not the total which will appear on the dial wheels 11 it several numbers have been reviously' run up on the active computing head. During the second half of the rotation of the car 1 16, the gear portion thereof will drive 516 shaft 153 in the opposite direction, causing the racks to be drawn down, thus returning the printing register 123 to its normal position, with the computing wheels thereof in mesh with the'racks 133.

On returning, the trips 162 will hit the bar 163 releasing the dogs or detents 140, permitting the springs 139 to return the printing wheels 134 to their normal zero position.

The. gears 138 then come in mesh with the racks 133, when the general operator has completely returned to its normal inactive position. At this time, the change from one computing head to'another is made by pressing downwardly on the lever 56. Lever 56 rocks the dogs51 and 52 to permit the spring barrel 49 to rotate, whereby the turrets 37 will be rotated, bringing the next computing head in active relation with the rack bars 7, and also beneath the driving connectingmechanism' to the printing registe 123. When the lever 56 was depressed, however, it also rocked the shaft'l66 which actuated one of the plungers 114 to enable a jump movement of the carriage 97 to the next column. Before either of these movements takes place, however, the lever 56 raised the frame 124 and brought the

gears

157 and 127 out of mesh respectively with the gears 156 and 1 a lost motion pinand slot connection being provided between the lever 56 and the link 55, to permit this to occur before the release of the carriageand the turret.

As soon as the gears 127 are moved out of mesh with the gears 10, the springs 180 will return the rocking levers 131 to their normal position, which movement is permitted by the pawl and ratchet connection of the gears 138 with the printing wheels 134.

When the new computing head is in position, the same operation can be repeated, the computing head adding the newnumber and r at the same time transmitting the number as an item to the printing register for it to transfer to the work sheet on the platen. This operation may be repeated over and "numeral keys, of a series claim 1. The combination with a plurality of numeral keys, of a series of computing heads, means for bringing said computing heads individually subservient to control by said numeral keys, a printing register, and means for driving said printing register from the active computing head, so as to run up thereon numbers run up on the active computing head.

2. The combination with a plurality of numeral keys, of a series of computing heads, means for bringing said computing heads individually subservient to control by said numeral keys, a. printing register, means for driving said printing register from the active computing head, So as to run up thereon numbers run up on the active computing head, and means for shifting said registers to print.

3. The combination with a plurality of numeral keys, of a series of computing heads, means for bringing said computing heads individuall subservient to control by said numeral eys, a printing register, means for driving said printing register from the active computing head, so as to .run up thereon numbers run up on the active computing head, means for shifting said register to print, and means for automatically returning said registers to zero after printing.

' 4. The combination with a plurality of of computing heads, means for bringing said computin heads individuall subservient to contro by said numeral Keys, a printing register, means for connecting said printing register to the active computing head, so as to run up thereon numbers run up on the active computing head, and means for disconnectingsaid register while changing from one computing head to another.

5. The combination with a computing head for running up and exhibiting numbers, of a printing register for running up numbers to printed, connections for enabling the concomitant actuation of said computing head and said register equivalent amounts, a general operator for causing-the running up of numbers in said computing head and said register, and mean-s actuated by said general operator for reciprocating said register to print.

6. The combination with a series of computing heads, of a single printing register and means for bringing said register into individual driving connection with said computing heads so as to be driven thereby to run up on said register numbers run up on said computing heads and means for enablin said register to print.

7. The combination with a series of computing heads, of computing mechanism for operating said computing heads, a rotatable turret for carrying said computing heads individually into cooperation with said computing mechanism, an escapement mechanism for controlling the rotation of said turret to bring said computing heads successively and in order into cooperation with said computing mechanism, and manual means for rotatin said turret to bring any of said computing heads selectively into cooperation with said computing mechanism.

8. The combination with a carriage having a platen thereon, of a printing register adapted to accumulate a series of digits comprising a number, means for actuating said printing register to print on a Work sheet .on the platen, means for enabling a feeding movement of said carriage, and mechanism for preventing the printing action of said register during the movement of said carriage.

9. The combination with a series of computing heads interchangeable to an active position, of a printing register, adapted to have numbers run up on said computing heads transferred thereto, a carriage having a platen thereon, means for manipulating said register to print on a work sheet on said platen, mechanism for enabling a movement of said carriage, mechanism for enabling the movement of said computing heads to change from one to the other, and means for preventing the printing movement of said register while said carriage is moving, and also preventing the transfer of a number from a computing head to said register 'while said computing heads are moving.

10. The combination with a plurality of computing heads, of actuating mechanism for said computing heads, a traveling carriage, tabulating mechanism. for affording jump movements of said carriage to bring the same to difl'erent computing zones or columns, jump-movement mechanism for bringing different ones of said computing heads into action corresponding to difierent computing zones or columns, and a single means for concomitantly controlling said tabulating mechanism and said jump-movement mechanism so as to accord the computing zones as determined by said carriage with the computing zones as determined by said computing heads.

11. The combination with a plurality of computing heads, of actuating mechanism for said computing heads, jump-movement mechanism for bringing about individual cooperat on of said computing heads with said actuating mechanism to afford different computing zones, a travelin carriage, tabuulating mechanism and said jump-movement mechanism to afiord a concomitant change as determined by said carriage and as determined by said computing heads.

12. The combination with a series of computing heads, of actuating mechanism for said computing heads, a jump-movement mechanism for bringing about a relative ump movement between said actuating mechanism and said heads, so as to bring ndividuals of said heads into play, a traveling carriage, tabulating mechanism for pcs1tioning said carriage for different computing zones, and mechanism for concomitantly caus ng simultaneous actuations of said tabulating mechanism and said jump-movement mechanism so as to concomitantly change the computin zone as determined by said carriage an by said computing heads.

13. The combination with a series of computing heads, of actuating mechanism for sa d computing heads, a carrier movable to br ng about the individual effectiveness of sa d computing heads, an escapement mechanism for said carrier, a traveling carriage movable to different} computing zones or concomitantly actuate both said escape ment mechanisms.

14. The combination with a rotatable turret, of a series of computing heads mounted on said turret, a sin le set of actuating mechan sm capable 0 operating a single computing head, motive means for rotating said turret to bring individuals of said computing heads into cooperation with said actuating mechanism, a traveling carriage, motive means for traversing said carriage, controlling means for governing the action of said motive means for said turret, controlling means for governing the action of said motive means for said carriage, and a manual control common to both said controlling means.

15. The combination with a rotatable turret, of a series of computing heads on said turret, a single actuating means capable of actuating a single computing head at a time, means for rotating said turret to bring individuals of said computing heads into cooperation with said actuating means, an escapement for controlling the rotation of said turret, a traveling carriage, tabulating mechanism for controlling jump movements of said carriage, a hand lever, and connections to both said tabulating mechanism and said escapement mechanism enablin the concomitant actuation of the same to ring about a change in the computing head with a change in the computing zone as determined by said carriage.

16. The combination with a series of computing heads, of actuating means for said computing heads, a jump-movement mechanism for bringing about a relative movement between said actuating means and said computing heads so as to bring individuals of said computing heads into play, a traveling carriage,-tabu1ating mechanism for affording jump movements of said carriage to determine difl'erent computing zones or columns, a printing register cooperating with the active computing head to register the items registered therein and coiiperating with said carriage to print the items registered in said register, and manual means for effecting a concomitant action of said tabulating mechanism and said jump-movement mechanism so as to bring about a relative movement between said actuating means and said computing heads to bring a new computing head into action and also so as to bring about a relative movement between said carriage and said register so as to permit the printing by said register in a new computing'zone or column.

17 The combination With a computing mechanism, of a printing register connected to run up items registered in said computing mechanism, a traveling carriage arranged to carry the work-sheet to be printed on by said register and movable to determine diiferent computing zones or columns, devices for causing said carriage to travel, and means for interrupting the connection between said computing mechanism and said register while said carriage has a movement from zone to zone under the control of said devices.

18. The combination with a computing mechanism, of a printing register connected to be actuated from said computing mechanism so as to register items run up in said computing mechanism, a traveling carriage arranged to carry a work-sheet 'to be written on by said printing register and moving to determine diiferent computing zones or columns, devices for causing said carriage to travel, means for advancing said register to print, and mechanism for automatically rendering said advancing means inefi'ective while said carriage travels under the control I of said devices.

19. The combination with a computing mechanism including a plurality of comput ing heads arranged to be brought individually into action, a printing register connectible to register items run up in the active computing head, an item register adapted to carry items into the printing register through the computing heads, and means for I interrupting the connection of said printing register with said computing heads while changing from one computing head to another.

20. The combination with a computing head, of a printing register connectible to receive items registered in said computing head and to print the same, a carriage cooperating with said register to print the items on a work-sheet carried by the carriage, said carriage traveling to determine different computing zones or columns, means for interrupting the connection between said register and said computing head at the printing actions of said register, and means for interrupting the connection between said computing head and said register during a traveling movement of said carriage.

21. The combination with a computing head, of a printing register connected to be driven from said computing head to register items run up in said computing head and print the same, a traveling carriage cooperating with'said printing register to print items on a work-sheet carried by the carriage, said carriage traveling to determine different computing zones or columns, means for advancing said printing register to said carriage to print, means for interrupting the connections between said printing register and said computing head during the movement of said register to print, and means for rendering said advancing means inefiective during a traveling movement of said carriage.

22. The combination with a computin head, of a registering mechanism for sai computing head, a general operator for cooperating with said registering mechanism to run up numbers in said computing head, a printing register connected to said computing head to be driven therefrom to register numbers to be printed, and means driven by said general operator for advancing said register to print and returning the same subsequent to the running up of a number in said computing head and said register.

23. The combination with a computing head, of a computation-registering mechanism for said computing head, a general operator having a back-and-forth stroke arranged to cooperate with said registering mechanism and run up a computation in said computing head, a printing register connected to be driven from said computing head to register items to be printed, and connections for reciprocating said register solely during the return stroke of said general operator and after said printing register and said computing head have registered the items to be printed.

24. The combination with a computing mechanism, of a general operator for actuating said computing mechanism, a printing register connected to be driven from said computing mechanism so as to register an item to be printed, a rack for advancing said" in action with the printing register so that the former will drive the latter, and means for interrupting the connection between said printing register and said computing head while changing from one computing head to another.

26. The combination with a plurality of computing heads arranged to be brought into individual action, of a printing register, mechanism connecting said printing register with the active computing head so that the former may be driven from the latter, and shifting means acting automatically to bring a new computing head into action and move said mechanism out of the range of action of the computing heads while efiecting the change between computing heads.

27. The combination with a traveling platen arranged to carry a work-sheet, of a seriesof registers, means for concomitantly bringing a fresh computing column. of the work-sheet to the printing point and a new register into action, and prmting means for taking from the register as computed each number and carrying it up to the accordant column of the Work-sheet.

28. The combination with a computing head for running up and exhibiting numbers, of a printing register for running. up numbers to be printed, and a train of gearing from the former to the latter so that the latter may be driven from the former, said train of gearing being interruptable at two points, one at said printing register and the other at said computinghead.

29. The combination with a platen, of printing means cooperating with said platen, and an exhibiting computing head comprising computing wheels and causing the numbers printed by said printing means to accord with the numerical activity of the wheels of said head.

30. The combination with a printing register, of indexing mechanism connected to drive said register, and a sight register forming an element in the driving connection between said indexing mechanism and said printing register.

. 31. The combination with a single printing register, of a unitary indexing mechanism connectible to operate said printing register, and a plurality of sight registers, any one of which may form an element in the chain of connection between said indexing mechanism and said printing register, so that the common printing register may transcribe a number run into any one of said sight registers. by said indexin mechanism.

HOLMES MA SHALL. Witnesses: Roenar Fmronnn Rooms,

WIILIAM R. KENNEDY.