US702052A - Adding-machine. - Google Patents

Description

No. 702,052. Patented lune I0, 1902.

E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.) (No Model.) 7 Sheets-Sheei l.

M/ITNESEEEi INVENTEIR',

76 76 &;4 vac/.4 wwwm 2.1mm

j-HE ATTEIR'NEY.

No. 702,052. Patented June I0, I902.

E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.) (No Model.) 7 Sheets-Sheet 2,

WWT EEEEE |N\/ENITUR',

. n'ww E 45 ATTUR'NEY.

No. 702,052. Patented lune l0, I902.

E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.) (No Model.) 7 Sheets-$heet 3.

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Patented June 10, I902.

7 Sheets-Sheet 4 TTDIQNEY 0.. WASH m5 Q Q mus rams m, PumEu m E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.)

(No Model.)

WITNESSEE? zgm.

No. 702,052. Patented lune l0, I902.

E. FITCH.

ADDING MACHINE.

(Application filed Nov. 28, 1898.)

% (No Model.) 1 SheetsSheet 5 WITNEEEEE 1rs INVENTUR.

76 I by JMJMI i -h5 ATTORNEY.

E. FiTCH.

ADDING MACHINE.

(Applicatio n filed Nov. 28, 1898.)

Patented June I0, [902.

7 SheetsSheet 6.

(No Model.)

INVENTEIR WITNESSES 1 k l5 ATTORNEY No. 702,052 Patentod m ne 10, 1902.

E. rncu.

ADDING MACHINE.

Application filed Nov. 28, 1898.)

(No Model.) 1 Sheets$heet 7.

llllllllh \A/ITNEESEE:

HIE ATTEIRNEY.

I UNITED STATES PATENT OFFICE.

EUGENEFITCH, OF ASTORIA, NElV YORK, ASSIGNOR TO THE UNION TYPE- WVRITER COMPANY, OF JERSEY CITY, NEWV JERSEY, A CORPORATION OF NEW JERSEY.

ADDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 702,052, dated June 10, 1902.

Application filed November 28, 1898. erial No. 697,613. (No model.)

To all whom-it may concern:

Be it known that I, EUGENE FITCH, a citizen of the United States, and a resident of Astoria, in the borough of Queens, city of New York,

in the county'of Queens and State of New York, have invented certain new and useful Improvements in Type-Writing and Adding Machines, of which the following is a specification. I

The present invention relates, primarily, to a combined adding and type-writing machine, one object of the invention being to provide a machine capable of being used for ordinary type-writing work, as writing words and sen- I5 tences, and by a simple adjustment of being rendered capable of doing such work and of registering and adding numbers.

Another object is in adding and recording the numbers added, to correct errors and defective records without operating the adding mechanism. Another object is to record the sum of an addition without disturbing the adding mechanism.

Another object is to provide a means for quickly and accurately writing like denominations under, each other in column.

Another object is to automatically space characters in the units-place and in the tenths- 0 place at a greater distance apart than the usual regular spacing of the Arabian numerals would give.

Another object is in a combined type-writer and adder in which part of the adding mech- 3 5 anism is movable relatively to the rest of such mechanism and in which such relatively movable part is out of engagement with the rest during a part of the forward traverse of the type-writer carriage and is automatically connected with said carriage at a given point or time and is thereafter controlled in its stepby-step movement by said carriage to relieve the driving mechanism or spring of the type-writer carriage from the additional work of moving such movable adding-mechanism element whether it be the adding-wheels or a part of the driving mechanism for operating or turning such wheels.

Another object is in a combined typewriter and adder in which there are two carriages, one of which has a part of the adding mechanism mounted thereon and in which the said ad ding-mechanism carriage is spring (or weight) driven, to automatically throw or bring said driving mechanism into operation when the type-Writer carriage reaches a given point in its forward traverse.

Another object is to operate an adding mechanism by power other than that derived from the strokes or movements of the hand in selecting numbers in the operation of add- Another object is in a combined type-writer and adding mechanism to operate the addingwheels (or equivalent) by a spring-driven escapement-controlled mechanism, and as an adjunct thereto to rewind or reset the said spring (or weight) automatically during the operation of the type-Writer.

Another objectisin acombined type-writer and adder in which the adding mechanism can be rendered inoperative, so as to permit of the use of the machine for ordinary typewriting work, to provide that the chance of accidental engagement and disengagement of the two mechanisms shall be reduced to a minimum, and other objects,-as will herein after more fully appear.

To these ends the invention includes features of construction and combinations of devices hereinafter described, and more particularly pointed out in the claims concluding this specification.

The preferred form of the invention is illustrated in the accompanying drawings, forming part of this specification, in which* Figure 1 is a front elevation of the machine. Fig. 2 is a plan view thereof. Fig. 3 is a central vertical longitudinal or front to back sectional view. Fig. 4 is a side elevation from the left of the machine, certain parts of the casing being omitted or broken away to more clearly show the mechanism. Fig. 5 is a plan View of the adding mechanism and operating parts. Figs. 6, 7, 8, 9,10, 11, and 12 are views of different parts of the mechanism for operating the adding mechanism. Fig. 13 is a perspective view of a number-wheel and operating-gears therefor. Fig. 14 is a detail perspective View of a part of the mechanism intermediate the carriage of a type-writing machine and a carriage of an adding mechanism. Fig. 15 is a similar view of the other end and side of lock and release plate partially shown in Fig. 14. Fig. 16 is a detail view showing the position of the parts in which the adding-mechanism carriage may be connected to or disconnected from the earriage of the type-writingmachine. Fig. 17 is a side view of a modified rack forming part of a carriage-feed mechanism. Fig. 18 is a detail view. Fig. 19 is a perspective view of the escapement mechanism for the addingwheels. Fig. 20 is a rear elevation of the machine, some parts being omitted and others broken away.

The same part in the drawings will he referred to by the same numeral or character of reference.

The particular type-writing mechanism, carriage-feed mechanism, and paper-feed mechanism illustrated in the drawings form the subject-matter of a companion application for Letters Patent filed November 26, 1898, and serially numbered 697,505, and need not be particularly described herein, except in so far as the same are connected with the subject-matter of the present invention.

The working or moving parts of the various mechanisms shown in the drawings are supported by suitable framework composed of a bottom frame 1, a plate 2,'posts 3, uniting the frame and plate, standards 4-, rails 5, strut 6, and various. brackets and other parts, as will hereinafter more fully appear.

The carriage of the typewriter illustrated comprises upright end pieces '7, united by bars 8, Figs. 3 and 20, and is provided with antifriction-rollers 9, which coaet with the guide-rails 5. The platen-carrier comprises end pieces 10, which are united by tie-rods 11. The uprights 7 are provided with forwardly-extending arms 12, perforated vertically to form guides for the rods 13, which are secured to the rods 11 by plates 14 and screws. The platen 15 is suitably journaled in the end pieces 10 and is provided with suitable line-feed and paper-holding devices.

The paper-carriage is provided with ordinary fiXed and movable pawls 16, Fig. 3, which coact with the rocking rack-bar 17. The rack-bar is supported by arms 18, which are pivoted at 19 to brackets or standards 20, rising from the plate 2. The universal bar 21 is carried at the front end of said levers 18 and overlies the key-levers 22. The keylevers 22 are pivoted at 23 on knife-edged pins, and the rear ends of such key-levers are held down by means of springs 24, bearing on the levers and attached to the said plate 2 by the said knife-edged pins. The jointed type-bars are pivoted upon a shaft 26 and coact with the platen and key-levers in a manner hereinafter described.

Considered purely with relation toits func tion as an adding mechanism the preferred form of myinvention includes a series of independently-operable number-carriers, said parts being supported by a suitable frame, and in conjunction therewith a spring or power driven driver for operating said number-carriers one at a time, the said frame and the parts supported thereby or the said driver having motion of translation, whereby the driver and the said independently-operable carriers are caused to be operatively engaged, as described, and a key-controlled escapement which controls the rotatory motion of said driver. I prefer that the variable throw of the driver for operating said nu mber-carriers to move them different distances, according to the amount they are to be turned or otherwise moved, shall be secured bya variable throw in the escapement itself.

In the preferred form of the adding mechanism (that shown in thedrawings) thenumher-wheels are placed side by side and are independently rotatable. These wheels are supported in a carriage which is adapted to move to and fro in a direction parallel to the direction of motion of the carriage of the type-writing mechanism when the adding mechanism is used in conjunction with atypewriter. The adding-wheels are independently rotated one by one, except in the operation of carrying, at which time one wheel turns one or more wheels of higher denomination and are carried in succession from right to left into and out of position to be turned by a rotatoryor other driver supported upon the fixed framework of the machine. Inasmuch as the type-writing proceeds from the left to the right and numbers are read from left to right, the direction of motion of the carriage of the adding mechanism in the preferred form of the invention is from right to left, and the adding-wheels are arranged with the highestdenomination. at the leftand the lowest at the right.

Each number-wheel 27 (see Fig. 13) is provided on its periphery with the nine digits and the naught arranged in order at equal distances apart and is provided with a cogwheel or gear 28, secured thereto at one side thereof. At the other side each wheel 27 (except the hundredths or lowest wheel) is provided with a toothed carrying wheel or gear 29, also fixed thereto. Each number-wheel, with its gear 28 and carrying-gear 29, is perforated axially to fit upon a shaft 30, whose ends are secured in the end pieces 31 32 of the carriage of the adding mechanism, Figs. t and 5. The end pieces 31 232 are secured together by means of the shaft 30, ashaft a bar 3%, Fig. 3, and a bottom plate 35, or by other suitable means, and are provided with antifriction-rollers 36, which coact with the guide-rods 37, secured to the frame 1. The

number-wheels from units up to millions are placed side by side and also the tenths and hundredths wheels; but the units-wheel and the tenths-wheel are separated from each other a small distance, as shown in Fig. 1.

thereto at 40, said pawl being in the plane of or adapted to coact with the carrying-pinion 29 of the number-wheel of the next higher denomination. Each pawl 39 is provided Wit-hacurved extension 41, extending beyond the center of the pinion 38 and coacting with the shaft 33 as a stop for limiting the rotation of the pawl in one direction upon its axis 40. Springs 42, secured to the face of the pinions 38 by screws 43, bear at their free ends upon the said extensions 41 and press said ends against the said shaft 33. Each number-wheel 27 is held against accidental rotation by a suitable detent 44, Fig. 3, at the end of a flat spring, which spring is socured to a bar 45, connecting the end pieces 31 32 aforesaid, said detents engaging with the teeth of the pinions 28 or 29. The V- shaped detent shown permits of the rotation of the number-wheel in either direction by the application of suitable force.

Mechanism by which the pinions 38 and their corresponding number-wheels may be driven will next be described.

One of the cross-bars 1 of the frame 1 is provided with uprights or standards 46, Fig. 5, to the tops of which a plate 47 is secured by screws 48. A bracket 49 extends forward and downward from the top of the plate 47, near one end thereof, and a bracket 50 extends rearwardly from the frame 1, near the left-hand front corner thereof, said brackets 49 50 being provided with suitable bearings in line with each other for a shaft 51, which is journaled therein and is held against endwise motion by collars 52 53, secured thereto as by set-screws. The rotatory shaft 51 is provided with a pinion 54, fast thereto and adapted to mesh with the pinions 38 as these are moved to and fro by the carriage of the adding mechanism. The shaft 51 is provided with a fusee 55, which is held against endwise motion by a collar 56 and a disk 57, the latter being integral with the collar 53 aforesaid. Between the fusee 55 proper and the disk 57 is a cylindrical portion 58, integral with the fusee or rigidly attached thereto, and a ratchet-wheel 59, fast to the said cylinder or barrel 58. The disk 57 is provided with a pivoted pawl 60, Figs. 5 and 18, which is pressed into contact with the ratchet 59 by a spring 61, secured to the disk and bearing on said pawl. The aforesaid pawl and ratchet permit of the rotation of the fusee and barrel in one direction independently of the shaft 51. A cord 62 has one end secured to the fusee, and the other end of said cord is secured at 63 to agrooved disk 64, which'is journaled at 65 on an arm of the said frame 1. The disk 64 is provided with a barrel around which a cord66 is wound. Said cord 66 is fast at one end at 67 to the disk 64 and the other end thereof is fast to one end of the helical spring 68, whose other end engages with a pin 69 on the frame 1. The tension of the con tract-ile spring 68 tends to rotate the disk 64 and to unwind the cord 62 from the fusee 55, the pull of the cord 62, acting through the backing-ratchet 59 60, tending to rotate the shaft 51 and pinion 54. The shaft 51 is providedwith two ratchetwheels 70, fast thereon, Figs. 10, 11, and 19, and a swinging detent-bar 71 coacts with said ratchet-wheels to prevent the rotation of the shaft 51 in the described direction except whenreleased,ashereinafterdescribed. The detent-bar 71 is fixed to and carried by two arms 72, Fig. 9, pivoted at 73 on a shaft or rod 74, Fig. 19, which is supported in brackets 75, rising from the top of the fixed plate 47 aforesaid. A spring 76, fast at one end to the under side of the said plate 47, bears against the under side of the said bar 71 and normally maintains the said bar in its working or holding position, as shown in Fig. 3. The bar 71 forms the holding-dog of an escapement mechanism composed of said bar, ratchet-wheels 70, sliding ratchet-bars 77, and stops,hereinafterdescribed. The saidratchetbars 77 are attached to or are integral with cross-bars 78, the whole forming a rigid rectangular frame. (See Fig. 7.) The bars 77 are provided with grooves 79, which embrace the edges of a carrier, as plate 80, Figs. 6 and 19, on which the said frame may slide. The carrier-plate 80 is provided with arms 81, by means of which it is pivoted=upon the rod 74 aforesaid. Between the arms 72 and the arms 81 arms 82 are placed and are independently pivoted upon the same bar or shaft 74. At their forward ends the arms 82 are united bya rod 83. The arms 82 rest upon pins or studs 84 in the arms 72, and the ratchet-bars 77 are provided with pins 85, which bear upon the tops of the arms 82. It will thus be seen that the force of the spring 76 is exerted in holding the detent 71 against the ratchet-wheel and also in maintaining the arms 82, plate 80, and sliding ratchet-bars in their elevated or upper positions. The sliding ratchet-bars 77 are held in one extreme of their motionto wit, against the stops 86 on the arms 81- by means of a spring 87 and cord 88, Figs. 5 and 19, one end of the spring being fast to the frame 1 or a pin on plate 47 and one end of the cord being fast to a hook or eye 89 on one of the ratchet-bars 77. For convenience the cord 88 passes about a pulley 90, journaled on the plate 47.

From the described construction it will be seen that upon the depression of the plate 80 the ratchet-bars 77 which are normally out of mesh with the ratchet-wheels 70, will be IIO carried down into mesh with said ratchetwheels and that at the same time the holdingdogs or bar '71 will be moved out of engagement with the said ratchet-wheels through the medium of the pins 85, arms 82, pins 84, and arms 72, whereupon the shaft 51 and pinion 54 will be rotated by means of the spring 68 and the connections intermediate said spring and said shaft 51 until arrested in some manner.

Means whereby the amount of rotation of the shaft 51 and pinion 5-1: is varied or regulated will next be described.

By reference to Fig. 2 it will be seen that certain of the keys 91 are provided with the nine digits and the naught. Each of the corresponding key-levers 22, except that of the lever corresponding to the naught, is connected, by means of a strap or link 92, with the rearend of a corresponding lever 93, Figs. 3, 15, and 19, the said straps 92 passing through a suitable slot in the plate 2. The levers 93 are pivoted upon the rod 7+1 aforesaid, and at their forward ends said levers 93 overlie the rod 83. The levers 93 are provided each with a downward extension or lug 94:, and these lugs 91 of the entire series of levers 93 are set back from the forward ends of the said levers 93 by regularly-increasing distances, as indicated in Fig. 12-that is to say, the said series of extensions 91. are in a line extending obliquely across the machine. The plate 80 is slotted obliquely at 95 to permit the said extensions 94: to pass therethrough, though the said extensions 91 do not normally extend below the plate 80. The front ends of levers slant up on their under sides, so as to be depressible without touching the plate'SO.

Upon operating or depressing any of the digit-bearing keys 91 the forward end of the corresponding lever 93 is depressed and carries down with it the rod 83, arms 82, arms '72, and bar 71. At the same time the plate 80 and ratchet-bars supported thereby fall of their own weight and the ratchet-bars mesh with the ratchet-wheels 70. The motion of the forward ends of the levers 93 about the axis '74: is greater than the similar motion of the plate 80, whence it results that the extension 91't of the depressed lever 93 is carried below the lower surface of the plate 80 and into the path of the rear cross-bar 7S afore said and stops the forward motion of the ratchet-bar 79, and so stops the motion of rotation of the shaft 51 and pinion 54. By reason of the oblique arrangement of the said extensions 9t the said forward motion or throw of the ratehet-bars 77 is stopped at different distances from the initial position of such bars, according to whichever digit-carrying key 91 may be depressedthat is to say, the extension or stop 91- corresponding to the 1 key permits the ratchet-bars to move forward a certain unit of space, the stop 94: corresponding to the 2 key permits the said ratchet-bars to be moved forward two of such units of space, and so on for the remainder of the digit-keys, thus controlling or regulating the rotation of the pinion 5i. On the release of the depressed digitkey the spring 76 returns the dog '71 and other parts of the escapement mechanism to the positions shown in Fig.

As shown in Fig. 5 ofthe drawings,the pinion 51- is not in mesh with any of the pinions E) This is the normal position of the parts during the greater extent of the motion of the carriage of the type-writing machine. As will be explained more at large hereinafter, the carriage of the adding mechanism may be put in motion toward the left at a predetermined point in the traverse of the paperearriage toward the left. When the carriage of the adding mechanism is so put in motion, the first or left-hand pinion 38 is moved into mesh with the pinion 54-, and thereafter the remaining pinions 38 come into mesh in succession with the said pinion 51 and the previously-engaged pinion moves out of mesh as the adding-mechanism carriage moves to the left. As shown in the drawings, each typebar is provided with three type and the machine is provided with two shift-keys, rspectively marked Fig and Gap, for de pressing and raising the platen-carrier, and also the keys carrying the digits are provided with letters to indicate the corresponding type. Inasmuch as the operation of any of these digit-keys during the ordinary typewriting will operate the levers 93 and so permit the spring 63 to rotate the pinion 54: it n'iight soon result that the spring (58 would run down before any pinion 38 is brought into mesh with the pinion 5 L. 1 have therefore provided a device for maintaining the spring (38 under tension sufficient to meet the maximum demands thereon during the process of operating the adding-wheels, and such device will now be described.

A spring-setting cord 96, Fig. 5, has one end secured to the barrel 5S,before mentioned, and is led therefrom in such wise that it is wound around said barrel as the cord (32 unwinds from the fusee 55. As shown in the drawings, the cord 96 passes under a pulley 97 (the cord 62 passes over such pulley) and around a second pulley 98, both pulleys being on the frame 1 orother part of the framework of the machine, and the other endof the cord 96 is fast to a pulley 99, Fig. 3, fast upon a shaft 100, journaled in a bearing in block 101. The block 101 is attached to and is moved with the paper-carriage, as by rods 102, connecting the block 101 with the bar 8 of the carriage. The shaft 100 is connected with the block 101 by means of a spiral or clock spring 103, one end of this spring being fast to the shaft and the other end being fast to a pin lixed to and projecting from the block 101. The spring 103 is so placed that its force is exerted to wind up the cord 90 on the pulley 99 as the paper-carriage moves from right to left, thus taking up any slack in the that after the paper-carriage has reached a predetermined point in its return motion from left to right the cord is wholly unwound from the pulley 99, and the further motion of the carriage to the right causes the cord 96 to rotate the barrel 58, thus unwinding the cord 96 therefrom and rotating the fusee 55 to cause it to wind up the cord 62 and through the described connections to put the spring 68 under tension. Upon the feeding forward of the papencarriage to the left the spring 103 takes up the slack of the cord 96 automatically, and the spring 68 does not rotate the shaft 51 except at such times as one of the digit-carrying keys 91 is depressed. If one of such keys is depressed, the wheel 54 is rotated a correspondingdistance, as above described.

In so far as certain of the objects of my invention are concerned it is not material whether the driver 54 be relatively stationary and the adding-wheels be carried by and be movable to andfro with the adding-mechanism carriage or whether the arrangement be reversed, nor is it material in all cases that the adding-mechanism carriage be governed in its forward motion by the type-writer carriage in its forward motion. It is enough that the driven addingmechanism carriage move in a step-by-step mannersimultaneously or otherwise With the type-writer carriage and that it begin such motion when the latter carriage reaches a predetermined point in its forward traverse. I prefer, however, to govern the step-by-step motion of the adding-mechanism carriage from or by the typewritercarriage rather than to govern it by an independent mechanism, as requiring a less complicated mechanism.

The mechanism shown in the drawin, s, whereby the carriage of the adding mechanism is started automatically at a predetermined point in the forward traverse of the paper-carriage and is thereafter moved in a step-bystep manner, will next be described.

The bar 34 of the carriage of the adding mechanism is provided with wide rack-teeth 104, Figs. 3 and 5, on the under side thereof. A pinion 105, fast on the shaft 106, meshes continuouslywith said rack-teeth 104. The shaft 106 is journaled in bearings 107 108 on the frame 1 and is capable of a limited endwise motion in said bearings, such motion not being sufficient to take the pinion 105 out of mesh with the said teeth 104. The shaft 106 has a second pinion 100 fast thereto at a point adjacent to the path of the block 101. The end of shaft 106 outside the pinion 109 is provided with a flat-faced lock-block 110, Figs. 14, 16, and 20, shown in the drawings as substantially half of a cylinder. The block 101 has a bar 111 attached thereto, said bar being parallel with the line of motion .of the papercarriage and being in the form of an anglebar provided at its right-hand end with rackteeth 112, said teeth being for coaction with the pinion 100 whenever the said pinion is moved rearward by shaft 106 from the position shown in Fig. 3, as will presently appear.

liar 111 is of a length equal to or greater than the length of the carriage traverse, and the rack 112 is at the right-hand end part of said bar 111. The downwardly-extending part of the angle-bar 111 is adapted to glide over the flat surface of block 110 during the progress of the paper-carriage, and so prevent any motion of rotation of the shaft 106. The said downwardly-extending part of bar 111 extends from the left-hand end thereof continuously toward the right and terminates at 113 adjacent the point where the rack 112 begins, so that beginning from the said point 113, Fig. 14, the block 110 and shaft 106 are released and may be rotated. At its forward side the said bar 111 is provided with a downwardly extending plate 114, which extends from the right-hand end of the bar 111 to a point 115, Fig. 15, near the left-hand end of said bar 111. The function of the plate 114 is to prevent the endwise motion of shaft 106 except at such. time as the paper-carriage is in its extreme right-hand position, at which time the shaft 106, with its attached pinions 105 and 100, may be moved rearward from the position shown in Fig. 3 to bring the pinion 109 to the rear of the plate 114, and so into the path of the rack 112. As shown in Figs. 3, 4, and 16, the block or lug 110 is long enough to engage under bar 111 in both (endwise) positions of shaft 106; but it is obvious that the block may be of a length sufflcient to cause such engagement only when shaft 106 is moved into its rearward position. The shaft 106 when in the position shown in Fig. 3 may be locked against rotation at all times by means of a pin 116 On the shaft and a slot 117 in the bracket 118, through which the shaft passes. The shaft 106 is provided with a circumferential groove 119, with which a pin 120 engages. The said pin 120 is carried by an arm 121 of a shaft 122, Fig. 5, which is journaled in the bracket 11S and in a bracket 123, secured to the frame 1. The shaft 122 is provided with an arm 124, adjacent to the bracket 123, which arm 124 extends upwardly through a slot in the plate 2 and forms a handlever, Figs. 1, 2, and 4, by which the shaft 122 may be rocked, and so cause the shaft 106 to be moved endwise. As long as the shaft 106 and the attached parts are in the positions shown in Figs. 3 and 4 the adding mechanism is in the position shown in Fig. 5. \Vheneverit is desired to connect up the adding mechanism in order. that it may perform its function, the papercarriage is moved to its extreme right-hand position against the tension of its propellingspring 125, Figs. 1 and 20, and the lever 124 is pulled forward, thus moving the shaft 106 and its attached pinions rearwardly of the machine, and so moving the pinion 109 into the path of the rack 112, as indicated in Fig.

IIC

1.4. This moves pin 116 clear of slot 117, and

so frees shaft to that extent as soon as the paper-carriage has moved far enough to carry the pinion 100 beyond the point 115. The plate 114 and the bar 111 prevent undue endwise motion of the shaft 106. When the paper-carriage has reached a predetermined point in its traverse to the left, the rack 112 comes into mesh with the pinion 100 and rotates the pinion and shaft. When the pin 116 is locked by the slot 117, the shaft 106 cannot rotate, and hence the adding-wheel carriage cannot move so as to engage any of the pinions thereon with the common driver 54. Thus the machine may be used solely as a type-writing machine and figures maybe written freely at all portions of the line of writing without affecting the adding-wheels. In other words, the machine operates either as a simple type-writing machine or as a combined type-writing and adding machine, according to the adjustment of the lever 12%. It will be perceived that it is not necessary when using the adding mechanism to adjust said lever 124: at the beginning of each line of writing, because after said lever is once adjusted and the pin thereby drawn out of the locking-slot the adding-wheel carriage becomes automatically coupled to the papercarriage near the end of each line of writing and automatically uncoupled during each return stroke of the carriage. The function of said lever is merely to move the shaft end wise far enough to withdraw the pin from the locking-slot and simultaneously move the gear 100 into line with the rack 112, so that the gear may be actuated by the rack at the same portion of each reciprocation of the paper-carriage. Fig, 1-1 shows the positions of the parts when the pinion 109 is in its rearward position, or in line with the rack 112, so that at the proper point in each traverse of the bar 111 saidpinion may mesh with the rack, whose teeth, it will be understood, are cut the full width of the squared end of the bar 111. It will be observed that the pin 110 has been moved clear of the slot 117, thus permitting the shaft 106 to be rotated. The pinion 109 is by preference smaller than the pinion 105, and both said pinions engage their corresponding racks at their own top sides, whence it results that the carriage of the adding mechanism moves from right to left during the movement from right to left of the rack 112, the bar 111, and the papercarriage, to which said bar is secured, the movement of said carriage being produced by the spring 125, Fig. 20, hereinafter mentioned, and being controlled in the usual manner by the escapement-pawls 16, which are coinmonin type-Writing mechanism and which permit step-by-step advance movements of the carriage at the successive operations of the type-keys. It is obvious, however, that if the rack 10-1 engaged the pinion underneath the same the carriage of the adding mechanism would be moved from left to right, or the same result could be obtained. by causing rack 11:? to mesh with the under side of the pinion 100, in which case the positions of the block and the bars 111 and 111- should be inverted.

The long horizontal shaft 100, which drives the adding-wheel carriage, is formed in two sections, the adjoining ends of the sections being rigidly connected by a coupling 126, Fig. 3, which is preferably formed in one piece and is secured to the shaft-sections by set-screws. A portion of said coupling between its ends is enlarged at 127 to form a drum, upon which is wound a cord 128, one end of said cord being secured to the drum and the other end thereof being attached to a contractile helical spring 131, Fig. 5. The function of this spring is to drive or assistin driving the shaft 106 and the adding-wheel carriage, which is geared thereto, thus relieving the mainspring 125, which drives the paper-carriage, to the end that the letterfeeding movements of the latter shall not be rendered too sluggish when the adding-wheel carriage is coupled thereto. It will be understood that it is desirable not only that the movements of the paper-carriage shall be prompt, so as to avoid irregular crowding or overlapping of the type impressions, but also that the movements of the adding-wheel carriage shall be prompt, so that a connection may be established between the common driver 5t and the adjoining pinion 38 before said driver is caused to rotate by the depression of a type-l ey, since if said driver should be rotated during a movement of the adding-wheel carriage and while the driver is not connected with any pinion 38 no pinion would be actuated by said wheel, and hence a mistake would. occur in the adding operation. Except when the paper-carriage is coupled to the adding-wheel carriage said spring 131 performs no function, and during the portion of the paper-carriage travel at which the adding-wheel carriage is inactive I prefer that said spring should exert no turning action upon the shaft 100, as it would cause undue friction between the locking-piece 110 and the cooperating locking-bar 111. \Vith this end in view I cut away a portion of the barrel 127 in such a manner as to leave opposite flanges 129 and 130, between which the cord 128 is con fined, and the cut-away extending to the axis of its drum, so that when the adding-wheel carriage is in its normal posi tion or at the extreme right-hand end of its travel the cord 12S maypass inastraight line from the spring 131 and substantially through the axis ofthe drum 19 7, so that said cord may normally pull at a dead-center, and hence exert practically no rotative influence upon the shaft. As soon as the shaft becomes coupled to the carriage-rack 112 said barrel is rotated, so that the cord is lifted and exerts a rotative influence upon the shaft. The diameter of the gear 105, which engages the rack 101 on the wheel-carriage, is so great that less than an entire revolution of the shaft is required for moving the carriage to the limit of its travel, and hence the cord 128 is not again brought to a dead-center, but constantly exerts a d riving influence upon the shaft and carriage. It will be seen that the portion of the drum 127 around which the cord is wound is semicylindrical in form, the plane face thereof passing substantially through the ,axis of the drum. If desired, the spring 131 and cord 128 may be omitted, and the paper-carriage-driving spring maybe given sufficient tension to drive both the type-writer carriage and the adding-wheel carriage.

Type-writer operators occasionally strike a wrong key,and so cause the impress of a wrong letter upon the paper on the platen. In such cases it is almost invariably true that the operator is aware of having struck the wrong key as soon as the stroke is done and notes the place for the purpose of makinga correction later on. If, however, the type-writing mechanism is being used with adding or registering mechanism, it is more convenient to make the correction at the time the wrong key is struck; but this involves a double correction-to wit, the erasure of the wrong character from the paper and the setting back of the corresponding number-wheel (or wheels, it carrying occurs) to what it was before the wrong key was struck and then the subsequent striking of the right key, the type writer carriage being also moved back to get the right digit in the right place. In this case the operator must move back the proper number-wheel by a number equaling the digit erroneously imprinted. For example, assuming that the numbering-wheels are in the position shown in Fig. 1to wit, all showing the naught-and that it is intended to write the digit 9 in the units-place and that the 8 key has been struck instead; this will cause a turning of the units-wheel to bring the 8 into view in the slot 13-32, (it being assumed that the adding mechanism is connected with the paper-carriage and that the carriages are in proper position to have the pinion 54 into mesh with the pinion 38, which drivesthe unitsnumber-wheel.) To make the correction, the operatorerases the 8 upon the paper on the platen and with a pencilpoint or the like inserted between the teeth of apinion on the units number-wheel moves the said wheel backward to bring the naught into view in the slot 132. Also the paper-carriage is to be set back one stop or space, thus moving the adding-mechanism carriage backward by the paper-space to bring the pinion 51 again into mesh with the pinion 38 driving the units number wheel. Thereupon the proper key-to wit, the 9 key-is struck, and the 9 imprinted upon the paper on the platen, and the 9 upon the units-wheel of the adding mechanism is brought into view in the slot 132. Alike method or operation is to be followed whatever may be the number erroneously shown in the slot 132 by the adding mechanism, care being taken, of course, to

turn the number-wheel backward the proper distance. It is observed that the pivoted spring-pressed pawls 39 will yield at such times as the carrying-wheels 29 pass by them should the pawls or any of them be in position to engage with the said carrying-pinions.

In writing bills or statements or other matter containing a column of numbers and summing up by the adding mechanism the sumtotal of the amount written upon the paper on the platen is shown by the number-carriers through the slot 1252, Figs. 1 and 3, and when it is desired to write this sum-total on the bill there are two ways in which it may be insured that the adding-wheels will not be moved while the operator reads the said sum therefrom and writes it upon the type-writing machine. One way is to disengage the adding mechanism from the type -writing mechanism, so that the latter may be operated without operating the former. This is done by disengaging pinion 109 from the groove formed by the bar 111 and plate 111 that is, by moving the shaft 106 into the position shown in Fig. 3 of the drawings. The second way to prevent the rotation of the number-wheels while writing the said summation is to lock the pinion 5-1 against rotation,whileleaving the adding-mechanism carriage and its operating mechanism in position to be operated by the rack 112.: In this case the pinions 38 will pass by and intermesh with the pinion 5% without being turned thereby during the said operation of writing the summation. For the purpose of so locking the said pinion 54: I provide a movable detent 133, Fig. 5, which may be moved into I and out of mesh with the teeth of the pinion 5i. As shown in the drawings, the said detent is carried by a sliding bar 13 1, which has a limited motion upon the plate 47 by means of slots in the bar 13& and screws 13G, passing through said slots and engaging the threaded holes in the plate 17. The bar 134: extends to the letthand side of the machine in position to be conveniently operated by hand. When the detent 133 is in engagement with the pinion 54, the said pinion and its shaft are prevented from being rotatedin either direction, though the detent 71 and ratchet'bars 77 are moved up and down whenever a digit-bearing key is struck. The ratchet-wheels 70 do not move, however.

At Fig. 17 is illustrated diagrammatically a rack 17, which may, if desired, be substituted for the usual feeding-rack, as shown at Figs. 3 and 1. In this figure a gap or interval 137 is shown between two of the rackteeth, the gap being produced by cutting away an intermediate tooth. It will be understood that as a result of the extra space 137 the paper-carriage will be caused to feed a double space instead of the ordinary space, and it will also be understood that the adding-wheel carriage is accordingly moved a double space, and accordingly a gap is left between the units -whecl and the decimalwheels, as illustrated at Figs. 1 and 5. If no space were left in the rack 17 at 137, there would be no jump of the carriage, but only the usual letterfeeding movement thereof, and accordingly there would be only the usual single-step movement of the addingwheel carriage, and hence the driver 5% would stand opposite the gap in the system of adding-wheels, so that if by mistake the operator should touch any figure-key, thus causing a rotation of the driver 5%, none of the addingwheels would be affected, and hence an error would occur in the adding operation. The purpose of leaving the gap 137 is therefore to provide against such an error and to insure that after the pinion 38, which engages the units-wheel, is moved out of engagement with the driver 54, the first decimal-pinion 38 shall be immediately moved into engagement with said driver. In this connection it will be observed at Fig. 5 that the tenscarrying pawl 39, which is mounted upon the tenths-pinion 38, is made of sufficient size to bridge the gap between the units and tenths numbering-wheels, so that tens may be carried from the tenths-wheel to the units-wheel at the proper time. In case a paper-carriage rack of uniform pitch is used care should be taken to strike either the period-key or the usual space-key after writing a figure inthe units-column and before writing the succeeding figure.

The carriage of the adding mechanism is provided with a pointer 138, Fig. 2, which coacts with the scale 139, attached to or formed on the plate 2. As shown, the pointer 138 is carried by a bar 140, which is connected to the carriage of the adding mechanism by a post 141, Fig. 4, and screw 142, the post passing through a slot 1 13, Fig. 3, in the said plate 2.

IVhenever the pointer 138 is opposite or over any one of the marks on the scale 139, it shows that the pinion 38 for operating the number-wheel of the corresponding denomination is in engagement with the driver 5%. Thus if the pointer be opposite the third mark to the right of the decimal-point'indieating mark 14st on the scale 139 it indicates that the pinion 38 for operating the hundrednumber carrier is in engagement with the pinion 5-1 and will be operated. by said driverpinion should a digit-bearing key be struck, it being understood, of course, that the pinion 109 is in mesh with the rack 112 at such time.

Although in this case I show the adding wheels on the carriage of the adding mechanism and the driver 5 L on the frameworkthat is to say with the former as having a to and-fro motion relatively to the driverit will be understood that in as far as that feature of my invention relating to an independent power mechanism for driving for the carriage (and attached parts) of the adding mechanism and in so far as certain objects of my invention are concerned the driver 5% may be made the so movable part of the adding mechanism (being moved axially in such case) and the adding-wheels may remain in a relatively fixed position, as shown and described in my application aforesaid.

It will be noted that the mechanism shown for connecting the type-writer and addingmechanism carriages includes a journaled shaft, which is continuously geared with one and is discontinuously geared with the other of said carriages. I do not limit myself to the instance shown, (one in which the typewriter carriage is the one discontinuously geared to the shaft,) however, since my invention is in this respect broad enough to include the case w ierein the adding-mechanism carriage is the one discontinuously geared to the shaft.

In order to provide for quickly moving the typewritor-carriage forward from any position to any other position, I provide a carriage-release key 145 on a lever 141;, Fig. 2, which is pivoted at 1-17 to a bracket 148, rising from plate 2, and is held with key 145 elevated by a spring 1 1-9. The rear end of lever 1&6 lies under the universal bar 21 and lifts the same to such an extent whenever key 1&5 is depressed sufficiently that the rack 17 is wholly disengaged from dogs 11; and the paper-carriage is free to be moved forward by its spring 125 until it reaches the end of its traverse or is stopped by hand or automatically at some other point. The scale 139 and pointer 1238 indicate the positions at which the carriages should be stopped.

The type-writing mechanism shown in the drawings comprises a series of type-bars 25, each formed in two parts hinged together at 150, the lower part 151 being fulcrnmed upon the rod 26 above described and the upper part 152 being provided with a type-block 153, having three types thereon. The part 151 has a disk-shaped lower end, which is provided with an open-ended slot to engage with the rod 26 and at the side opposite the slot with a notch to engage the rounded end of the corresponding key-lever 22, all as shown in Fig. 3. Each part 151 is provided with a cam 151-, substantially in line with the pivot 150, for a purpose presently to appear. The parts 152 are bent outwardly from a medial line of the machine, as illustrated at Fig. 2, and rest in combs 155 156, which are secured to a guardframe 157, extending around the type-bars in theirnormal positions. Converging arms 158 are secured to the guard 157 and serve to guide the parts 152 to a central guide 1.59, by means of which the type-bars are brought to the printing-point of the platen 15. An inking-roller 1H0 lies in the path of the type on the bars at the guide 159 and imparts ink to the type when the latter strike it on their way to the printingpoint and push it aside. The roller 160 is pivoted in arms 1131, which are pivoted upon a vertical axis at 162. A spring 1623 returns the roller to the position thereof shown in Fig. 2 as soon as the type releases. During the return motion of the type-bars the cams or guides 15!- of the bars ICC adjacent to that operated coact to force the part 152 of the bar operated to its normal position, the working faces of cams 151 being inclined inwardly from each side of the machine, as shown in Fig. 2.

The platen-carrier 10 is provided with downwardly-extending arms or rods 13, provided at their lower ends with rollers 161, which run upon a rod 165. The latter is borne by arms 166, fast upon a rock-shaft167, suitably journaled in the framework of the machine. Springs 168, secured to the frame of the machine and having a limited motion, rest under the ends of the shaft or rod 165 and hold the platen-carrier in a central position, in which the middle types of the blocks 153 will coact with the platen. The shaft 167 is connected by an arm and a link 169 with a V-shaped shift key-lever 170, having two keys 171 and 172 thereon and pivoted at 173 to a bracket 174, rising from the top plate 2. By pushing the key 171 'rearwardly of the machine the link 169 is drawn forward and the shaft 167 is rocked, so as to lower arms 166 and rod 165 against the tension of the springs 168, thus permitting the platen-carrier 10 to move downwardly into position to coact with the lowermost types on the typeblocks 153. By depressing the key 172 to the limit of its motion the link 169 is moved rearwardly, and the shaft 167 is rocked to lift the arms 166 and rod 165, and so lift the platen to position in which it coacts with the upper types of the blocks 153.

The operation of the machineis as follows: A sheet of paper is inserted in the usual manner around the platen, and the paper-carriage is pushed to the right. This movement of the carriage sets the mainspring 125, Figs. 1 and 20. The capital shift-key 172, Fig. 4, is then depressed, swinging the lever 170 upon the pivot 177 and through the link 169 rocking the shaft 167 and elevating the horizontal shifter-bar 165 and the vertical rods 13, thus lifting the platen to the position for writing capital letters. While the platen is in this position a type-key 91 is depressed, so as to vibrate its lever 22, Fig. 3, and elevate the rear end thereof, thus swinging the arm 151 upwardly about the fulcrum 26 and carrying the type-bar 152 up, so that the capital type upon the block 153 strikes the paper upon the platen. During this movement the bar 152 contacts with the edge of the deflector 158 and is thereby guided toward the printing-point. Justbeforestrikingtheplaten the type contacts with the ink-roller 159 and receives a supply of ink therefrom, said roller being pushed aside by the type and swinging upon its pivot 162. The transverse universal bar 21 is also raised by the ascending rear end of the key-lever, thus causing the arms 18 to rock upon the pivots 19 and moving the feeding-rack 17 down out of engagement with the upper and into engagement with the lower feeding-dog 16, mounted upon the carriage. Upon the relief of the type-key 91 from pressure the key-lever 22 is restored to its original position by the spring 24, the type-bar and the inking-roller also returning to their normal positions. At the same time the universal bar 21 descends and the rack 17 rises, the latter thus releasing the lower dog and rengaging the upper dog 16, whereby the carriage is permitted to advance under the tension of the spring 125 to a position for receiving the next type impression in the usual manner. The capital shift-key 172 is now released,thus permitting the platen to descend to its normal central position. Then other type-keys are operated in succession, the middle or lower-case types upon the type-blocks striking the platen. When it is desired to print figures, the rear shift-key 171 is pushed rearwardly, and through the link 169 the shifterbar 165 is depressed, thus permitting the vertical rods 13 and the platen to descend, so that the lower or digit types upon the typeblocks may strike the platen. When the key 171 is released, the platen is lifted by a spring 168 to its normal central position. It will be understood that by the successive type-key depressions the carriage is fed along step by step by the cooperation of the mainspring 125, the feeding-dogs 16, and the rack 17. Then the line of writing is completed, the platen is given a slight rotation, so as to advance the paper thereon in line-space direction, and the carriage is pushed to the right for beginning a newline. The above-described operations may be continued indefinitely without affecting the adding-wheels. When it is desired to bring the adding mechanism into play, the handle 12%, Figs. 1, 4:, and 5, is pulled forwardly, thus rocking both the shaft 122 and its downwardly-projecting arm 121, and by means of the pin-and-slot engagement with the carriage-coupling shaft 106 the latter is slid rearwardly, so as to withdraw the pin 116 thereon from the locking-slot 117, Fig. 3 and 1 1, and simultaneously move the pinion 109 into line with the short rack 112, which is suspended from the lower portion of the paper-carriage. Care must be taken to see that the paper-carriage is at the extreme right-hand limit of its travel at the time that the lever 124: is swung forwardly, because when the carriage is in this position the cut-away 115, Figs. 15 and 20, stands opposite the pinion 109, and hence the rearward movement of the latter is not obstructed, whereas at any other point in the travel of the paper-carriage the bar or plate 114 would prevent the shifting of the pinion. It willbe seen that this movement of the lever 12% puts the adding-wheel carriage-driving shaft 106 into condition to be automatically coupled to the paper-carriage mechanism at the terminal portion of each line of writing-that is, the portion at which figures are to be written in column upon the paper. The bar 1251, Figs. 1 and 5, is also drawn toward the left, thereby withdrawing the locking-tooth 133 and releasing the number-wheel rotator 5-1:, so that the latter may be intermittently rotated by the spring 68 when the figurekeys are manipulated. Having thus placed in condition for activity both the mechanism for rotating the number-wheels and the mechanism for coupling the latter to the paper-carriage, the type-keys may be manipulated so as to write words or items at the left-hand portion of the page or line in the manner already described. After such writing the paper-carriage is moved into position at the left for writing in the column. This carriage movement may be produced, if de sired, by pressing the releasekey 145, Fig. 2, thereby lifting the universal bar 21 and swinging the rack 17 down clear of both dogs 16, so that the carriage is free to run rapidly to the left under the influence of its driving-spring 125, said rack rengaging the dogs upon the return of the release-key to normal position. During said movement of the carriage the lock 110, Figs. 14 and 16, prevents rotation of the shaft 106, which drives the adding- Wheel carriage, and hence the carriage stands idle. hen, however, during said carriage movement the short rack 112 upon the carriage reaches and engages the pinion 109, the shaft 106 becomes automatically coupled to the paper-carriage. At the same moment block 110 is released by the bar 111, the looking portion of the latter terminating at the left-hand end of the short rack 112, and during the onward travel of the paper-carriage said pinion 109 and shaft 106 may be rotated freely by the rack 112. At the initial rotation of the shaft 106 and a half-drum 127, Fig. 3, the extreme right-hand end of the horizontal portion of the cord 128 is raised, and thereafter the spring 131, Fig. 5, exerts a rotative power upon the shaft and aids materially in driving the adding-wheel carriage.

As will be understood by reference to Fig. 5, a short preliminary travel of the addingwheel carriage is necessary in order to bring the first pinion 38 thereon into engagement with the key-controlled rotator 5- This first pinion is of course associated with the millions number-wheel; but the operator may by touching the usual space-key or otherwise advance both the paper-carriage and the add ing-wheel carriage until the number-wheel of the desired denomination is engaged by said rotator54that is, until the pointer 13S, Fig.2, stands opposite the graduation upon the scale 139 which corresponds to said denomination. If the number to be written and added is of the millions denomination, then the papercarriage and adding-wheel carriage will be arrested when said index is opposite the extreme right-hand graduation upon said scale, or if it is of the hundred-thousand denomination when said index is opposite the second graduation, and so on.

Assuming that the number to be written is 23%.56, the carriages are advanced until the pointer 138 stands opposite the fifth graduation from the righton the scale 139,

at which time the fifth pinion 88 from the left at Fig. 5that is, the pinion connected with the hundreds number-wheelis engaged to the common rotator 5 1, while the paper-can riage stands in position to receive the impression of a type in the lnindreds-eolumn. Having thus positioned both the paper-carriage and the adding-wheel. carriage, the figure shift-key 171 is pushed rearwardly, and the platen is hence depressed, and while the platen is in this position the type-key 2, Fig. 2, is depressed, thus swinging up its type-bar to impress the type 2 upon the paper, and also affecting the carriage-feed mechanism, as above described, while by the linlc 92 the rear end of the second lever 93, counting from the right at Fig. 5, is elevated, thereby depressing the forward end thereof, said lever turning upon the fulcrum-rod 71. The

forward tip end of said lever bears down upon the cross-bar 83, Figs. 3, 5, 11, and 19, and presses down both said rod 83 and the side arms 82, the latter swinging upon the rod 71'. At the same time the square rackframe, consisting of the opposite racks 77 and the cross-bars 78, descends by gravity, the laterally-projecting pins 85 upon said racks resting upon the upper edges of the said descending arms 82, and by reason of the descent of said rack-frame the normallydisengaged racks are enabled to engage or mesh with the pinions 70, which prevent further downward movement of the racks as well as of the plate 80. These pinions are fixed upon tne same shaft 51 that carries the addingwheel rotator 51-. In their downward movement the arms 82 bear down the pins 81, Figs. 9 and 19, and the side arms '72, which also swing upon said fulcrum-rod 7 1-, and during the latter portion of the descent of the lever 93 the crossbar 71, which is carried by the arms 72 and normally engages both of the pinions 70, is withdrawn from the latter. Simultaneously the lug 0-1- upon the lever 93 is projected downwardly through the oblique slot 95 and slightly below the bottom surface of the hinged plate 80, upon which, as hereinbefore described, said square raclnframe may slide. Hence it will be seen that the pinions are released for a rotative movement, so as to slide the racks '77 forwardly along the plate 80, while simultaneously the lug fit is placed in position to contact with the bar 78, and hence arrest the racl :frame. The arrest is effected in this instance when the ratchet-wheels and the actuator 51 have advanced two points, according to the position of the particular lug 91- which is associated with the type-key 2, said lug being so close to the normal position of the stop-bar 78 as to arrest the latter as soon at it has moved two points. This will be understood by reference to Figs. 11 and 19, at which figures, however, the racks are illustrated as having been arrested by the lug 91-, associated with the 9 key. It will be understood that the rotary movement just referred to of the shaft 51 and the pinions and 54, fixed thereon, is-produced by the spring 68, acting through the cord 66, pulley 64, cord 62, fusee 55, and backing-ratchet 60. It may also be remarked, parenthetically, that the cord 96 is simultaneously wound to a slight extent upon the barrel 58, said cord unwinding from the pulley 99 in opposition to the tension of the spring 103, Fig. 3, said cord having been automat ically wound upon said pulley by said spring during the movement of the paper-carriage from right to left or in letter-feeding'direction. By means of the pinion 38 the rotator 54 is enabled to effect a rotation.of the fifth number-wheel from the right at Fig. 5 for a distance of two points, so that the figure 2 appears thereon through the sight-opening 132 at Fig. 1. During this movement of the number-wheel the detent 1 1, Fig. 3, bobs over the teeth of the pinion 28 and operates accurately to position not only said pinion and number-wheel after the actuation thereof, but also the pinion 38, so that the addingwheel carriage may travel freely and without danger of collision between a tooth of the pinion 3S and a tooth of the common rotator 54. The figure 2 having thus been iinpressed in the hundreds-column upon the paper and the hundreds number-wheel having been advanced two points, the finger-key 2 is released and returns to normal position under the influence of spring 24:, thus permitting the return of the type-bar in the de scribed manner and also enabling the stoplever 93 to resume its normal position. As the forward end of the latter rises the spring 76, Figs. 3, 11, and 19, lifts the detent bar or dog 71 into engagement with the escapementwheel 70, and at the same time, by means of the detent-arms 72 and the pins 84: thereon, the frame, consisting of arms 82 and bar 83, is lifted, and the pins 85 lift the racks 77 out of mesh with the pinions 70, said racks swinging up with the plate 80, which is hinged upon the rod 7-;t. The rengagement of the detent-bar 71 with the power-driven wheels 70 prevents rotation of the latter when the racks 77 are withdrawn therefrom, and upon said racks becoming clear of the wheels the rack-frame is drawn rearwardly to normal position against the stops 86 by means of the cord 88 and the spring 87. As already explained, during the return of the key-lever 22 to normal position the universal bar 21 descends, the rack 17 rises, and the paper-carriage is permitted to feed a letter-space. During this movement of the paper-carriage the rack 112 thereon rotates the pinion 109, and by means of the shaft 106 and large gear 105, Fig. 3, which is in engagement with the rack 104 upon the adding-wheel carriage, the latter is given a corresponding endwise movement, said movement being greater than that of the papercarriage owing to the difference in the diameters of the gears 109 and 105. This movement of the adding-Wheel carriage is of course assisted by the spring 131, and by said movoment the fifth-wheel 38 from the left, at Fig. 5, is moved out of engagement and the next pinion 38 is moved into engagement with the rotator 54:, thereby connecting the tens number-wheel to the figure-kcys at the keyboard. Having thus both printed and added the the finger-key for 3 is depressed, thus impressing the type 3 upon the paper, and also through the third lever 93 from the right at Fig. 5, causing the operation of the escapement-pinions '70, the rotator 5st, and the pinion 38 engaged therewith, so as to rotate the tens-wheel three points and cause the number 3 to appear thereon through the sightopening 132 at Fig. 1. After releasing said key the key 4: is depressed so as to print a in the units-column and turn the unitswheel four points. Then the period-key is depressed, thus feeding both the paper-carriage and the adding-wheel carriage without causing a rotation of any number-wheel by reason of the space that exists between the units and tenths wheels, and in which space the rotator 54E is located after the units-figure has been written and while the period-key is operated. Then the type-keys for 5 and 6, respectively, are operated with corresponding results. It will be understood, however, that if a rack such as illustrated at Fig. 1.7 is employed the period-key need not be manipulated between the units and tenths columns, since the paper-carriage will automatically skip a space at this time, and the adding-wheel carriage will accordingly move far enough to engage the tenths-pinion 38 with the rotator 54:. The platen 15 is now rotated, so as to advance the paper a linespace, and the carriage is moved back to begin a new line. During this reverse movement of the carriage the rack 112 rotates the pinion 109 reversely, and hence by means of the shaft 106 and gear 105 the adding-wheel carriage is returned to its original position, as illustrated at Fig. 5. At this moment the rack 112 leaves the pinion 109, thereby uncoupling the carriages, while the locking portion of the bar 111 engages the block upon the pinion-shaft 106, and thereby prevents further rotation of said shaft, and hence further movement of the adding-wheel carriage. It will also be understood that during the reverse rotation of the shaft 106 the cord 128 is wound upon the half-drum 127, thereby resetting the spring 131, the cord 128 being finally restored to its original position and extending substantially through the axis of the drum 127, so as not to have any rotative effect upon the latter, thereby avoiding undue friction between the looking-block 110 and the bar 111. It will be understood that at each rotation of the fusee 55 by the spring 68 during the adding operation a length of the cord 96 has been wound upon the barrel 58, a considerable portion of said cord finally becoming Wound about the barrel, said cord paying off from the sleeve 99. During the initial portion of the said return movement ICC IIO

of the paper-carriage the remainder of the cord is unwound from the sheave 99 (which is mounted upon the carriage) in opposition to the tension of the spring 103, since the ten sion of the latter is not sufficient to rotate the barrel 58 in opposition to the pull of the spring 68 acting through the cord 62. During the final portion of the return travel of the paper-carriage the unwound cord 96 is dragged along by the sheave, thereby forcibly rotating the barrel 58 and fusee 55, so as to wind the cord 62 upon the latter, and hence reset the spring 68. During this movement of the fusee the pawl 60 slips over the teeth of the ratchet 59, Figs. 5 and 18, while the shaft 51 and rotator 54 remain motionless, and hence it will be seen that said rotator cannot at any time be accidentally operated to rotate the adding-wheels backward, even if the return movement of the carriage should be begun while said rotator is engaged to one of the pinions 38.

The operation of writing words at the lefthand portion of the page and of writing and adding numbers at the right-hand portion thereof maybe repeated indefinitely, the adding-wheels being rotated according to the Values of the figure-keys operated. At each revolution of a pinion 38 the pawl 39 thereon, Figs. 5 and 13, comes once into mesh with the pinion 29 upon the right-hand face of the adding-wheel of nexthigher denomination and ro tates said pinion 29 and its addingwheel one point, thereby carryingten. If it should happen at any time that the pawl 39 is in such engagement at the moment when the numberwheel of higher denomination is being independently actuated by the rotator 5 1-, said pawl will yield and accommodate the movement of the number-wheel of higher denomination, so that the movement of the latter may not be transmitted through said pawl to the wheel of lower denomination,which would be the case if said pawl were rigidly attached to its pinion 38, thereby causing an error in the adding operation. The spring 42 restores the pawl to normal position after the yielding movement thereof, so that the tens-carrying operation may proceed as before.

It will be observed that I have combined a series of letter and figure types, keys therefor, a carriage connected for letter -space movement to all of the keys, a series of power-rotated adding-wheels, means for connecting each adding-wheel to any of the figure-keys, and means for enabling the connected key to limit the are through which the adding-wheel is power-rotated. Said connecting means are normally called into action at a predetermined point in the traverse of the paper-carriage and are disconnectible from the paper-carriage by the lever 1%. At said predetermined point the adding-wheel carriage-driving spring 131, which is normally on a center, and hence inoperative, is automatically brought into active operation. The

gearing connected to said spring is eontinnously connected with the adding-wheel carriage and discontinuonsly connected with the paper-carriage. The independent operating means 38 for the number-wheels are distances apart greater than the step-by-step feeding movements of the paper-carriage, this being due to the motion-multiplying mechanism which connects the paper-carriage to the adding-wheel carriage. The adding-wheel carriage moves at a greater rate of speed than the type-writer carriage, the motion of the former being, however, governed by the motion of the latter. The adding-wheel carriage moves in a direction of the axis of the driver 5et. It will also be observed that a variable throw-escapement mechanism, including the racks 77, pinions or escapement-wheels 70, and detenls 71, is common to and controllable by all the lignre-lreys and controls the rotatory movements of the driver 5-l, the latter being rotated progressively in one direction by the spring (58. The escapementwheels 70 are power-driven, the movable holding-dog 71 coacts therewith, and the endwisemovable racks or ratchet-bars 77, which are also movable transversely of their length into and out of mesh with said wheels, are constructed to cooperate with the holding-dog to permitthe escape movement of the wheels. The rack-carrier S0 is pivoted upon the fixed bar 7-l independently of the pivotal mounting of the holding-dog7l. The reciprocatory feed-racks or ratchet-bars 77 are movable transversely into and out of mesh with the escapement wheels 70, said racks being pressed in one direction of their reciprocationthat is, rearwardly-by the spring 87, which normallyholds the rectangular rackframe against stops 86 on the plate 80. The racks move endwise to and fro upon the carrier 80 and are arrested by independentlymovable stop-bars 93 at different distances from their initialpositions, said stops or stoplevers 93 being each adapted to move the holding-dog 71, so as to release the escapemerit-wheels 70. The bars 93 have stop-lugs 94: and are operated by connections which extend to the type mechanism. The stoplugs 9% are arranged in a line which extends across and obliquely to the direction of the to-and-fro motion of the rectangular rackframe. The plate 80 and the rack-bar frame thereon are connected by the pins to the bail-arms 89, so to be moved in one direction therebynamely, in an upward directionduring the upward movement of the finger-key. The arms S2,taken together with the cross-bar 83, form a pivoted bail for moving the arms 72, which carry said holdingdog 71. It will be observed, further, that independent means, as 38, are provided for rotating each adding-wheel, said means being operated one at a time by the rotatory driver 51, which is driven by the spring 68. Means are connected with the type writing mechanism for resetting the spring 68, said means IIO including the barrel 58 and the cord 96,1hereby restoring the power for operating the adding-mechanism driver 54.. In other words, the paper-carriage is a to-and-fro movablespring setter connected with the spring 68, which actnates the number -wheel d riverwheel 54, so as to reset said spring from time to time.

By means of either the slide 13 which looks the adding-wheel driver against rotation, or the lever 12t,which moves the coupling-pinion 109 to'a position of disuse, the addingwheels may be rendered inoperative at will.

While I have particularly described the illustrated form of my inventiomlam not to be understood as limiting myself to such particular form, inasmuch as my invention is capable of being embodied in other forms and arrangements without departing from the spirit thereof.

WVhat I claim as new, and desire to secure by Letters Patent, is

1. The combination of type mechanism, a carriage,an adding or registering mechanism, a second carriage on which the adding-wheels are mounted, and means for automatically connecting said carriages together at a predetermined point in the forward motion of the type-writer carriage, means independent of the moving means of the first-mentioned carriage for moving the carriage on which the adding-wheels are mounted; substantially as described.

2. The combination of type mechanism, a carriage,an adding mechanism, a second carriage on which part of said adding mechanism is mounted, and independent spring-operated driving mechanism for said second carriage and automatically thrown or brought into operation when the type-writer carriage reaches a predetermined point in its forward traverse; substantially as described.

The combination'of type mechanism, a carriage, an adding mechanism, one part of which has motion to and fro relatively to the other part,and an independent driving mechanism for moving said movable part and normally out of action until the said carriage reaches a predetermined pointin its forward motion; substantially as described.

4. The combination of type mechanism, a carriage, an adding mechanism, a second carriage on which part of said adding mechanism is mounted, mechanism for connecting said carriages together when the type-writer carriage reaches a predetermined point in its forward traverse, and an independent spring for moving said second carriage but normallyinactive before the type-writer carriage reaches said point and thrown into operation when said carriages are coupled to gether, substantially as described.

5. The combination of type mechanism, a carriage, an adding mechanism, a second carriage on which part of said adding mechanism is mounted, gearing continuously connected with one of said carriages and discontinuously connected with the other thereof, and a drive-spring connected with said gearing and on a center until the gearing is connected with both carriages, substantially as described.

6. The combination of type mechanism, a carriage, an adding mechanism, a second carriage on which part of said adding mechanism is mounted, an independent driving mechanism for said second carriage, and means for automatically connecting said driving mechanism with the type-writer carriage when the latter reaches a predetermined point in its forward traverse; substantially as described.

7. The combination of type mechanism, acarriage, an adding mechanism, a second carriage on which part of said adding mechanism is mounted, an independent driving mechanism for said second carriage and normally inactive during a part of the forward traverse of the type-writer carriage, and means for automatically throwing or bringing said driving mechanism into action when the typewriter carriage reaches a predetermined point in said forward traverse; substantially as described.

8. The combination of type mechanism, a carriage, an adding mechanism, a second carriage on which the adding-wheels are mounted, an independent driving mechanism for said second-named carriage, and means for automatically connecting said driving mechanism with said type-writer carriage at a predetermined point in the forward traverse of the latter; substantially as described.

9. The combination of type mechanism, a carriage, an adding or registering mechanism including a series of adding-wheels, asecond carriage on which the adding wheels are mounted,normallyinactiveindependent driving mechanism for said adding-mechanism carriage; and means for automatically throwing said driving mechanism into action when the type-writer carriage reaches a given point in its forward traverse; substantially as described.

lO. The combination of type mechanism, a carriage, an adding mechanism, a second carriage on which part of the adding mechanism is mounted, a rack on the last-named carriage, a pinion meshing with said rack, a spring for rotatin said pinion in one direction, and means for rendering said spring inoperative dnring a part and operative during the remainder of the forward traverse of the type-writer carriage; substantially as described.

11. The combination of type mechanism, a carriage, an adding or registering mechanism, a second carriage supporting the addingwheels, a rack on said second carriage, a journaled pinion meshing with said rack, and mechanism for automatically connecting said pinion with the type-writer carriage at a predetermined point in the forward motion thereof 5 substantially as described.

12. The combination of type mechanism, a

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