US1270241A - Combined type-writing and computing machine. - Google Patents

Description

B. C. STICKNEY.

COMBINED TYPE WRITING AND CUMPUTING MACHINE.

` APPLICATION FILED OCT. I3| IQII 1,270,241 Patented June 18, 1918.

5 SHEETS-SHEET I.

WITNESSES' INVENTOR:

B. C. STICKNEY.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

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INVENTOR: @Mw/mw WITNESSES:

B. C. SICKNEY. COMBINED TYPE wRmNG AND COMPUUNG MACHINE.

APPLICATION FILED 0CT.33,\9|1. 1,270,241 Patented 1111191111918.

5 SHEETS-SHEEY 3.

FIG. 7.

INVENTOR:

B. C. STICKNEY.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED 001113 19H.

1,270,241 PatentedJun18,191&

5 SHEETS-SHEET 4.

WITNESS ES:

B. C. SUCKNEY. commen TYPE wnnm Mm coMPuTmG MACHINE:

APPLICATION FILED OCT. 13| |9| 1,270,241 Patented June 18, 1918.

5 SHEETS-SHEET 5.

INVENTOR:

w |TNEssEs:

UNITED STATES PATENT OFFICE.

BURNHAM C. STICKNEY, OF ELIZABETH, NEW JERSEY, ASSGNOR TO UNDERWOOD COMPUTING MACHINE COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF NEW YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

Application filed October 13, 1911.

To all whom 'it may Concern.'

,Be it known that I, Bunninur C. STiCkn Nm', a citizen of the United States, residing in Elizabeth, in the county of Union and State Yof New Jersey, have invente-d certain new and useful Improvements in Combined Type-Writing and Computing Machines, of which the following is a spiwitication.

rlhis invention relates to combined typewriting and computing nniehines of the kind in which a relative step-by-step movement is eil'ected between the master wheel and a system of computing wheels coneoniitantly with the letter-feeding mrlivenients of the carriage of theA typewriting machine, and in which a rotation or movement of the master wheel or device is effected as eac-h key is operated.

The object of the present invention is to provide improved means for preventing au improper or incorrect action ot' the compito ing Wheels due to the liability ot the master wheel being rotated while the typewriter carriage is in motion, or before it has left one computing Wheel and been brought into proper engagement with the next. By means of this device, the necessity is avoided ol providing or relying wholly upon stop devices i'or preventing simultaneous rotation of the master wheel and traveling movement of the carriage.

The improvements are illustrated in connection with aA computing head which is connected up to the paper carriage to travel therewith. while the master wheel does not travel with the paper carriage.; but it will be understood that the invention is applicable to machines in which the master wheel travels stcp-by-step while the computing head does noi travel ith the paper carriage; or in which both master wheel and computing wheels travel simultaneously,but in opposite directions.

According to this invention, the master wheel is rotated by the linger key during the early part. of the key stroke; and after such rotation and before or during the com pletion of the key stroke, the master wheel jumps to the neXt computing wheel in the system. that is, to the wheel ot' next lower denomination, instead of remaining in mesh With the computing wheel which it has just rotated. This jumping ot the master wheel is effected automatieffilly and anticijmtively, 0r in advance ot' the ensuing letter-tending Specification of Letters Patent.

Patented June 1S, 1918.

serial No. 654,535.

movement of the carriage, which usually oecurs during the return stroke of theI numeral key.

Heretofore, in key driven computing mechanisms, it has been the custom for the master Wheel to remain in mesh with 'the dead computing wheel, that is7 the computing Wheel which it has just rotated7 until after the key had returned to normal position, and until after the arri-age had coinpleted its ensuing letter spacing movement; and hence the master Wheel has remained uselessly in engagement with the dead computing wheel for a. comparatively long time. According to the present invention. the master wheel immediately leaves the dead coinputing Wheel and jumps to the live computing wheel in advance of the movement of the carriage, so that if a succeeding key is depressed before the carriage movement is completed, it will cause the master wheel to rotate together with the computing wheel, even though said wheels are traveling with the carriage. Hence faulty operation cannot occur, and the necessity ol using complicated interlocking mechanisms is avoided. The master wheel is very light and mores quickly so that it :an jump the short distance required before there any liability of an operation of a succeeding key, and in fact this jumping movement of the, master Wheel may be completed by the time the tirst key has linished its down stroke, so there is no liability of clashing of any parts of the mechanism. The master wheel is normally in mesh with the live computing Wheel, and, after turning the latter. the master Wheel immediately jumps to the next computing wheel, Where it remains until the next key has operated, so that there is hardly any interval of time during which the mas14 ter wheel is in mesh with the dead computing wheel. This saving oi time is important not only because it permits speed of operation, but also because it renders it unneces- Sary t0 hamper the operator by :t system oli locks.

I arrange to disconnect the numeral key from the master wheel during the down stroke of the numeral key, preparatory to the jumping movement of the master wheel; and at the last part of the down stroke of the numeral key a spring is caused to advance the master wheel to the next computing wheel; this movement being controlled by the numeral key, which, after effecting this purpose, is disconnected from the innster wheel; so that the computing devices are operated and thc master wheel is repostioned, and all these parts disconnected from the numeral key by the time it has completed. its printing stroke, thus insuring quickness of operation of the automatic mechanism and clearing a way for the operation of the succeeding key before the first key has entirely returned to normal position, and be fore the paper carriage has made. its ensuing letter feeding movement. The master wheel can perform its function of turning the computing wheel both when the carriage is stationary and also when the carriage is moving, so that there is a relatively long interval of time during which rotation of the master wheel can perform its function, instead of the extremely limited time as heretofore.

The feature of disconnecting the key from the master wheel during the down stroke of the key has further advantages, which may also be employed in machines in which there is no relative anticipative jumping movement between the muster wheel and the computin wheels.

Upon t 1e return of the key to normal position, it reconnects automatically with the computing mechanism for elfecting a subsequent operation of the latter.

Other objects and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a sectional View similar to a part of Fig. 3, showing particularly the normal position of an overthrow check for the master wheel.

Fig. 2 is a perspective view of a spiral series of key-operated arms projecting from a rock shaft which drives the master wheel.

Fig. 3 is a sectional side elevation taken longitudinally through an Underwood front strike typewriting machine, showing the present improvements applied thereto.

Fig. 4 is a front elevation of the machine, showing the parts in normal positions.

Fig. 5 is a plan of the numeral keys of the typewriter.

Fig. 6 is a plan of the connection between the computing mechanism and the typewriter carriage escapement Wheel.

Fig. 7 is a rear elevation of a wheel driven by the typewriter carriage and a pawl mechanism associated therewith to vibrate the master wheel 29 seen at Figs. 1 and 3.

Fig. 8 is a view similar to Fig. 7, but showing the master wheel vibrating pawl as silenced.

Fig. 9 is a sectional side elevation, showing the automatic disconnection of a numeral key from the master wheel driver.

Fig. 10 is a similar view, showing the key wholly disconnected from the computing mechanism prior to the completion of the printing or down stroke of the key.

Fig. 11 shows the key temporarily at the end of its down stroke, while the computing devices have returned to normal positions.

Fig, 12 shows the key returning to normal position.

Figs. 13 to 1U are views similar to Fig. S, but showing different positions of the parts.

Fig. 13 shows the pawl 52 as just released from the carriage driven Wheel 54.

Fig. l-1 shows the pawl 52 as intercepted by the pin 71 in case the releasing arm 51 should remain an undue length of time in its depressed position; whereby the spring 57 is enabled to cam the pawl 52 upwardly into engagement with the succeeding tooth of wheel 54.

Fig. 15 shows the pawl 52 in engagement with the succeeding tooth of wheel 54, to enable the carriage to drive the master wheel, to cause the latter to accompany the carriage in its ensuing letter-feeding movement.

Fig. 16 illustrates what happens when an alphabet key is employed for printing a type and feeding the carriage; the wheel 54 driving the pawl idly toward the left until cam 80 on the paw] is intercepted by fixed pin 81, thereby causing the pawl to escape rom the wheel, and permit it to jump into the next notch thereof under the tension of spring 57.

Fig. 17 is a front elevation, illustrating the pawl 52 and master wheel 29 as silenced by t-he finger key 82; the dotted lines showing the normal position of the master wheel.

Fig. 18 is a view similar to Fig. 17, showing the parts in the same position as at Fig. 16.

Alphabet keys 1 and numeral keys 2 are mounted on levers 3 fulcrumed at 4 and connected by bell cranks 5 to type bars 6, which strike upwardly and rearwardly against a platen 7 as usual in the Underwood typewriting machine; said platen mounted on a carriage 8, which is propelled by a spring barrel 9 and has a rack 10 meshing with a pinion 11, to which is connected an escapement wheel 12 which is controlled by detent and feeding dogs 13, .14. Each type bar has a heel 15 to press rearwardly a universal bar 16, the latter mounted on a frame 17 sup-- ported on its rear end by idle links 18 and operating the dogs 13 and 14 in the well known manner, to cause the carriage 7 to feed at each type stroke.

Each of the numeral keys 2, bearing the numbers from l to 9, is provided with a connection 19, pivoted at 20 to the key lever 3 and having at its upper end a hook or nose 21 to catch over one of a series of pins or li'lgs 22 formed upon the arms 23; the latter all fixed upon a rock shaft 24 of the computing mechanism, and projecting rearwardly from said rock shaft. Said shaft also carries an arm 25 upon which is piv- Oted a driving pavvl 26 to mesh with a ratchet Wheel 27, which is iXed to a shaft 28 on Which is carried a master Wheel 29.

To the paper carriage 8 is connected a series of computing wheels 30 meshing with pinions 31 carried upon dial Wheels 3a; the computing Wheels and dial Wheels (together With the usual tens carrying mechanism, not shown) being placed in a easing 33 supported upon arms 34 projecting forwardly from the carriage 8.

The arms 28 have a spiral arrangement; the strokes of the connections 19 being uniform. and the arms 23 being placed s0 that different movements will be given by different keys to the master Wheel Q9, according to the value of the key. The parus 23 to 2.7 operate as an indexing mechanism to drive and determine the extent of rotation of the master wheel or member 29. Any other suitable system of computing Wheels andinaster Wheel. and means for driving the master Wheel may he employed; as the parts 92 to 34 are used merely to illustrate one kind of computing mechanism to which the improvements can he applied.

Each connection 19 is in the form of a trip which releases the pin duringlr the down stroke of the numeral key Q. This release may be 'effected in various Ways, as hy means of a trip bar in the path of a cam or tappet 3G on the trip. Then the type har has nearly reached the platen, as illu='- trated at Fig. 9, the cam 3G, by cooperation with the trip har 35, disengages the nose 21 of the trip from the pin 2Q; and a spring 3T, connected to an arm 38 on the rock shaft 21, returns the latter to normal position in advance of the return of the key to normal position; said spi-ine; holding said arm 88 up against a stop 39. ny suitable means miv he provided for preventing overthrow of the master wheel :1t the key strokes. The dierononction of the key from the computinnr mechanism. as aforesaid. condnccs io the speed of manipulation of the machine. It also avoids liabilityv of the type har being cheri-:eil in its printing stroke hy reason of fire arrest of the computing; devices at the completion of their strokes; since the type ller can continue in action a ft er the key lever il has heen disconnected from the computing devices.

Said master wheel 29, as soon as it has completed the rotrtion of the computing Wheel. and before the down stroke of a numeral key 2 is completed, moves or starts to move to position to engage the rire computing Wheel.. that is, the computing wheel 30 of the next lower denomination to the one that has just heen operatori. This jumpino; of the master Wheel is initiated h v said. trip 19, the latter having' a second nose 4) to engage a luslr or crook L11 formed on the end of an arm a2 fixed upon a rock shaft 43. There are one crook 11 and one arm 42 for cach trip; and therefore the devices 41, 42 and 13 may he taken together as constituting a universal device. The nose el() is formed upon an ear 41 Which is folded from the upper portion of the trip 19 and extends alongside of the nose 21. This nose 40 operates the part 41 of the universal device as the trip disconnects itself from the piu Q2; so that it is insured that the master wheel shall not jump before its rotation is completed. The positions of the parts, when the nose l0 is depressing the member L11 of the universal device. is seen at Fig. 9.

llilhen said universal device is dei'iressed in the manner indicated, a pendant arm 4:5 fixed upon the rock shaft Li-8 is swung; forwardly, and, by means of a link 4G, swings an upstandingir arm 47 on a rock shaft LL8 at Vthe rear of the machine. This rock shaft is journaled in any suitable supports 49, 50, and upon its inner end carries a releasing arm 51. This arm is depressed when the shaft L18 rocks in the manner just stated; and during such depression, the arm 51 engages and carries down a pawl 52, which is normally in engagement with a tooth 5? of a Wheel 54, which is fixed upon the shaft 55 which carries the pinion 11 and escapement Wheel 12 of the carriage l'cedingr mechanism. The Wheels 51 and 12 are rigidly connected; while the pinion 11 has a ratchet connection 56 to the Wheel 12, to permit the carriage to run hack to begin a new line while the wheels 12 and 54 remain stationary. The depression of the pawl 52 carries it down out of engagement with the tooth 53. as at Fig. 13; and as soon as said pawl escapes from the tooth 53, a draw spring 57 snaps the pai-vl toward the right at Figi. 15 to engage it with the next tooth of the wheel 54.-, which at this time is stationary. Said pawl is connected to the master wheel 99 to jump the latter toward the right at Fig. 4 to position to engage the next lower computing: wheel 30. This connection includes an arm 58. to which the paw] 52 is pivoted at 59; said arm fixed at its lower end to a horizontal rock shaft. 60, which may he suitably journalod in the framework, and at its forward end carries an arm (il having: a slotand-pin connection at (i2 with a lever (i3 of the first order. vwhich is tulcrumed at (S41 und has at, its upper end a pivotal` connection (53 to a link (iii. This lini.v 131'? extends tow-wd. the. master Wheel 29. and at its inner und is pivoted t0 a collar 67 which is confined in a groove 88 in the huli G9 of the master wheel; said link G6 having a fork 70 to loosely liestride the shaft 28 to restrain the inner end of the link against vertical displacement. The lud) tlf! isplined at. 8? lo the master- Wheel shaft or ratchet wheel shaft. The

spring 57 therefore, as soon as the pawl 52 is released from tooth 53, operates to engage said pawl with the next notch in the Wheel 54, and simultaneously jump the master Wheel 29 out of engagement with the dead computing Wheel and into engagement with the live computing wheel; all of this occurs during the down stroke of the key 2, or at about the completion of said down stroke.

It will be seen that the pavvl is not only moved toward the right, but is also caused (preferably by the same spring 57) to jump up into the succeeding notch. A stop 7l prevents overthrow of the paWl 52, Fig. 15, and the master Wheel 29 connected thereto.

At the time that the nose 40 of the double trip engages the universal member 4l, the cani 39 is still in engagement with the tripping bar 35; and the cam action continues, so that the nose 40 is caused to release the universal member 41 at the final portion of the stroke of the key 2, so that the arm 5l may release the pavvl 52 and permit the spring 57 to snap the pawl into the next notch of wheel 54; the return movement of 51 and 45 being produced by a spring 72, Figs. 3 and 15.

During the last portion of the down stroke of the key 2, the heel 15 on the type bar strikes the universal bar 16 and moves the carriage feeding dog 13 ont of mesh with the escapement Wheel 12 and the dog 14 into mesh therewith; no motion of the aper carriage taking place at this time. t the beginning of the return stroke of the key 2, the dogs 13, 14 resume the initial positions at Fig. 3, and the escapement Wheel 12 is permitted to turn one tooth, and the carriage S to advance one letter space. Durin this motion of the Wheel 12, the Wheel 54 rives the pa-Wl 52 to the left from Fig. 15 position to the normal Fig. 7 position; and in consequence the master Wheel 29 accompanies the live computing wheel 30 as the latter travels to the left at Fig. 4 With the paper carriage as the latter feeds a letter space.

If another numeral key is started down during the return of the operated key to normal position, it will be seen that the master Wheel 29 will rotate, and Will turn the computing Wheel 30, during the travel of the carriage; since all the Wheels, including the master Wheel, are traveling together. It often happens that a second key is depressed before the paper carriage completes its letter feeding movement; and sometimes the key is half Way down before the carriage has made one half of a letter space movement. Owing to the provision of having the master Wheel 29 travel with the carriage, in the manner stated, no harm results from such premature operation of the second numeral key, because the computing operation Will proceed in a proper manner, and the paper carriage will be in position to receive the matas/ia impression by the time that 4the key is fully depressed. lt will be seen that the ynecessity for relying wholly upon interlocking devices for .preventingP the carriage from traveling while a computi-ug' wheel is turning, and for preventing ,a computing wheel from turning while the carriage is travel ing, `is avoided. As each numeral key 2 returns, a spring 73, Fig. 3, snaps the trip 19 back over ithe pin 22:, said spring connecting the stem of the trip 19 directly to the key. rllhe trips may be guided in a comb 74.

At Fig. 1 is shown a yieldingfarm 75 on the rock shaft 43, said arm having a locking tooth 76 to engage atooth or notch of the master wheel 29 (Fig. 9) to lock the same temporarily at the completion of its rota4 tion by any iigure key 2, so as to .prevent overthrow. This` lock is promptly Withdrawn, asthe arm V .returns to normal position simultaneously with Ithe rock shaft 423, under the inliueuee of spring 72, as soon as nose 40 ofthe double tnip is released from the universal member 41 duning the down stroke ofthe lkey 2. Saitlarm 7 5 has a hub, whereby it is `loosely mounted on the rock shaft 43; and a spring linger 7 7 projects from said shaft, and is caught at its other end by clips 78 on the arm 75. This spring permits slight additional motion of the rock shaft after the engagement of the locking pin 7 G with the master Wheel 29. Any other suitable means may be provided for locking the computing wheels against overthrow.

than the carriage is fed by any of the letter keys l, the wheel 54 forces the paWl 52 toward the left at` Fig. 16, together With the arm 58; the rock shaft G0 and the master Wheel 2f) also partaking of this idle movement. A cam 80 on the paivl is at this time intercepted by a releasing pin 81, which is fixed upon the machine frame, and causes said paWl to escape from the Wheel 54 at about the time the latter has made one half of its step-by-step movement or from the dotted line to the full line position at Fig. 16. Upon such escape the spring 57 returns the pawl to the right at Fig. 16, and the cycle of movements is repeated for each depression of any alphabet key 1.

The pawl 52 may be carried to the left at Fig. 16, and held out of the path of the wheel 54, by swinging down a linger-piece 82 pivoted at 83 upon the front portion of the framework and having an arm 84 Which engages a dependent arm 85 fixed upon the rock shaft (S0. The key is swung to the Fig. 17 position, and thereby withdraws the paWl 52 entirely from the Wheel 54; and arm 84 mechanically locks the parts in the F ig. 17 position; since said arm at this time eX- tends at a right angle to the arm 85, the pressure oi.' the latter being directly toward the pivot 83.

At the same time, the numeral keys 2 may i be disconnected from the computing wheels, by the following means. A bail or rod or releasing bar 86 extends down from the shaft 35, which may be mounted to rook to carry said bar 86 rearwardly to swing all of the trips 19 back far enough to clear the lugs 22 and 41, so that the numeral keys may be operated Without disturbing the coinputing devices. An arm 87 is xed upon said rock shaft to be engaged by a pin or arm 88 secured to the arm 85, so that when the latter is moved to the Fig. 17 position, the trips 19 are also swung back and silenced.

The key 2", Fig. 4, which is used for Writing a character 0, is not provided with an arm 23, but its trip 19* has a nose 40 to engage a finger 11 carried b-y the rock shaft 48. so that although the master Wh el Q9 is not rotated` still it is jumped to tie neXt lower computing wheel when a 0 is Written, so that the master wheel is in position to' turn the next computing Wheel in advance of the completion of the ensuing feeding movement of the carriage.

Variations may be resorted to Within the scope of the invention, and portions of the improvements may be used Without others.

Having tlius described my invention, I claim:

l. The combination of numeral keys. a carriage, a master Wheel, a gang of computing Wheels, one of said master Wheel and gang elements being connected to said carriage, means to enable the numeral keys to drive the master wheel, means for automatically effecting connection between the master wheel and the computing Wheel of next lower denomination, during the down stroke of each numeral key and after the Wheel at the master Wheel has been turned by said keys. and independently of the letter feeding movement of the carriage, and means for causing thc master wheel and computing wheels to travel together during the ensuing letter-feeding movement of the carriage.

2. The combination with a letter feeding carriage and numeral keys, of a master wheel. a computing head, said master wheel and computing head constituting companion elements one of which is connected up to the carriage to travel therewith. means for jumping the master Wheel automatically to the l ve computing Wheel as soon as it has turned the preceding computing Wheel.. and means for causing the master Wheel and computing head to travel together With the carriage during the ensuing letter feeding movement of the latter.

The combination with a letter feeding carriage and numeral keys. of a master wheel rotatable during the early part of each key stroke, means effective after suoli rotation and before or during the completion of the key stroke, for jumping the master Wheel to the next computing Wheel in the system, and means to return the master wheel during the next ensuing letter feeding movement of the carriage.

4. The combination With a letter feeding carriage and numeral keys, of a master wheel rotatable by the numeral keys during the early part of each key stroke, means effective after such rotation and before or during the completion of the key stroke, for jumping the mi ster wheel to the next coniputing wheel in the system, and trip devices between said numeral keys and said master Wheel to disconnect the master Wheel from the control of the keys during the down stroke of the keys and after the complete turning of the master Wheel.

5. The combination With a computing mechanism, and a master Wheel, of numeral keys for controlling the drive of the computing mechanism by the master wheel on the down stroke of said keys, and means for enabling the master Wheel to jump from the dead computing wheel to the live computing wheel during, or at the completion of, the down stroke of a key, to thereby increase the period of engagement of said master wheel with the live computing Wheel.

6. The combination with a letter-feeding Ycarriage, a computing mechanism, and a master Wheel, of means to enable said master Wheel toiiiove in one direction with the carriage throughout the letter feeding movement of the latter and to move in the opposite direction independently of the carriage.

7. The combination With a series of coniputiiig Wheels and a master wheel, of numeral keys for driving said master wheel, means for disconnecting a numeral key from the master Wheel during the down stroke of the key, a spring controlled from said keys to cause the master Wheel to jump to the live computing wheel. as soon as said master wheel is disconnected from the driving key, and means for restoring the master wheel to normal position against the tension of said spring.

8. The combination With a master Wheel and a series of computing wheels driven therefrom, of a series of numeral keys, a series of spiral arms controlled by said keys, said arms controlling the drive of said inaster wheel. and operating trip connections between said arms and said numeral keys.

9. The combination of a series of immoral keys, a master Wheel, operating trip connections between the numeral keys and the ni aster Wheel, and master-Wheel-jumping meel anisin also having trip connection to said keys` botli the operating trip connections and the jumping mechanism trip connection being released on the down stroke of the keys, the release of the said operating trip connections being followed immediately by that of the jumping mechanism trip connection,

whereby the master Wheel may he lumped independently of the return of the keys to normal positions.

l0. In a computing machine, the combinaF tion with computing mechanism, a` master Wheel therefor, and keys for driving said master Wheel, of trip means to disconnect said keys and master Wheel on the downstroke of any key and after said key has driven said master wheel, and overthrowpreventing means for said master Wheel operated by said trip means,

11. The coml'iination with a master Wheel and a series of immoral keys for driving the same on the down stro-ke of a key, of means for jumping the masterV wheel from one computing Wheel to the next lower wheel at the last part of the down stroke of a. key, and means for disconnecting the lmaster wheel from the control of the key during the said down stroke of the key preparatory to the jumping movement of said master Wheel.

12'. The combination with a series of numeral keys, a master wheel andl computing wheels, of connections pivoted to the keys and having hooks, pins over which said hooks catch, arms carrying said pins, a rock shaft from which said arms project, a driving pawl between said rock shaft and said master Wheel, and means dependent upon the key strokes Jior disconnecting said hooks.

13. The combination With a series of numeral keys, a master Wheel and computing wheels, of connections pivoted to the keys and having hooks, pins over which said hooks catch, arms carrying said pins from a rock shaft from which said arms project, a driving paWl between said rock shaft and said master Wheel, means dependent upon the key strokes for disconnecting said hooks, cams or tappets on said hooks, a trip bar in the paths of said cams or tappets and a. spring for returning said rock shaft in advance of the return of the key.

14. The combination with a carriage, a set of computing wheels, a master Wheel and numeral keys. of a. universal device operable by any numeral key, a Wheel or rack connected to said carriage. a pawl normally in engagement With said Wheel or rack and disengageable by said universal device, and a spring to advance the master Wheel to the next lower computing Wheel when said pawl is released, said pawl connected to said master wheel and moved by said spring into engagement with' the next tooth on said carriage wheel, and caused by the carriage during the ensuing feeding movement thereof, to move the master Wheel axially in unison with the feeding movement of the carriage. whereby said master Wheel may be rotated by' the next operated numeral key before said carriage and master Wheel come to rest.

15. Tn a combined typewriting' and computing machine, the combination with computing wheels, a master Wheel therefor, a traveling carriage, and numeral keys, of a. universal device to prevent overthrow of said master wheel and operable by any numeral key, a controlling Wheel, a pawl normally engaging said Wheel and disengageable therefrom by said universal device, and means to advance the master wheel to the next lower computing Wheel when said pawl is released, said pawl connected to said master wheel and moved by said advancing means into engagement with the next tooth on said controlling wheel, and caused by the carriage during the ensuing feeding movement thereof, to control the master wheel axially to hold it inV engagement with the live computing Wheel, Whereby said master Wheel may be rotated by the next operated key before said carriage comes to rest.

16. In a combined typewriting and computing machine, the combination with coniputing wheels, a master Wheel therefor, a traveling carriage, and alphabet and numeral keys, of a controlling Wheel, a pavvl normally in` engagement with said wheel and disengageable therefrom by any numeral key, and a spring to advance the master wheel to the next lower computing Wheel when said pawl is released, said pawl connected to said master Wheel and moved by said spring into engagement with the next tooth on said controlling wheel, said carriage causing said wheel to restore said spring to normal tension during the ensuing feeding movement of said carriage, to control the master Wheel axially to hold it in engagement with the live computing Wheel, \vhere by said master Wheel may be rotated by the next operated numeral key before said carriage comes to rest, said spring being further tensioned to move said pawl to abnormal position during each operation of an alpha bet key.

17. In a combined typewriting and computing machine, the combination with computing wheels, amaster Wheel therefor, a traveling carriage. and alphabet and numeral keys, of a controlling wheel, a pawl normally in engagement with said Wheel, means controlled from any key for disengaging said paivl from said controlling wheel, a spring to advance the master wheel to the i next lower computing Wheel when said pawl is released, said pawl connected to said master Wheel and moved by said spring into engagement with the next tooth on said controlling Wheel, ,said carriage causing said wheel to restore said spring to normal tension during the ensuing feeding movement of said carriage, to control the master VWheel axially to hold it in engagement with the live computing Wheel, whereby said master wheel may be rotated by the next operated numeral key before said carriage comes to rest, said spring being further tensioned to move said pawl to abnormal position during each operation of an alphabet key, and a. device to move and lock said pawl in said abnormal position.

18. In a computing machine, the combination with computing Wheels, of a master Wheel, numeral keys to drive said master wheel, means for disconnecting said keys from said master Wheel, means to reciprocate said master wheel, an overthrow lock for said master Wheel, and a universal member controlling said reciprocating means and said lock, said member operated by each key immediately after said key is disconnected from the master Wheel.

19. The combination with numeral keys, a` master wheel controlled on the down stroke thereof. and computation Wheels' operable by said master wheel. olt means etlective upon the down strokes oi' the keys sul, sequent to the rotation ol the master wheel, tor effecting relative jumping' movement. between the master wheel and computation wheels Afor engaging the master wheel with the live. computation wheel.

2t). The combination with numeral keys. a master wheel controlled on the down stroke thereof. and computation wheels operable by said master wheel, of a. step-bystep feeding carriage for controlling; certain movements of said master Wheel, and means etlective upon the down strokes of the keys .subsequent to the rotation of the master wheel for eltectinpg'relative jumping between the master Wheel and computation wheels l'or engaging the master Wheel with the live computation wheel, said jumping movement. being distinct trom and anticipative of the movement ol said Carriage.

2l. The combina( ion with nun'ieral keys;y a master wheel connected with said keys to be controlled thereby, and computation n'heels operable by said master wheel, ot means effectiver upon the down strokes ot' the keys subsequent to the rotation of the master wheel for ett'ecting relative jumping' movement between the master and com putation wheels for engaging the master Wheel with the live computation Wheel. and means for disconnecting the active key `trom the master wheel preparatory to the jumping or anticipative movement ot the latter.

The combination with numeral keys. a master wheel connected with said keys to be controlled thereby` and coi'nputation wheels operable by .said master wheel. of a step-by-step t'eedinn carriage tor ettectinfj i relative denonlinational movements between said master Wheel and said computation Wheels, means effective unon the doivn strokes ot the keys subsequent to the rotation of the master Wheel. for etteeting relative jumping movement between the master Wheel and computation wheels for engaging the master wheel with the live eominitation wheel., said jumping armement being distinct from and anticipative ot' the movement ot' said carriage, and means for disconnect,- ing the active key from the master Wheel preparatory to the jumping o1' anticipative movement of the latter.

23. The combination et numeral keys` :i master 'Wheel or member, means cfmtrollable by the keys for causing the master wheel to rotate 'ariably during the doivn :strokes ot' the keys, computation wheels or members operable by said n'msteit'ayheel, and means eliective upon the down strokes ot' the keys subsequent to the rotation of the master wheel, for effecting relative jumping' movement between the master wheel and coinputation Wheels for engaging the master wheel with the live computation wheel.

2l. The combination with numerzil keys, a master wheel conneettal to said keys to be controlled thereby,y and computing wheels operable by said master wheel. ol' a single member connected to each key, and means. rendered eli'ectivo by said member on the down-stroke oi said key subsequent to the rotation ot the master wheel for disconnecting' said key from said master wheel. tor effecting' relative jumping movement between said master Wheel and the computing! wheels to engage the master Wheel with the live computing' wheel, and tor reeonniatinn' each key to the master Wheel `upon the return stroke ot the key.

The combination with a serif-s ol' ronputing' wheels, ot a master wheel Ytor drivinfr' said computing wheels aeration.. and means for vibrating said master wheel bark and forth axially between drives thereby o each computing Wheel.

2G. The combimition with a .seriesl oi' einnput ing* wheels. ot' a master wheel i'or dlii inn' said computinglr wheels. actuat ingmeelmuism for said master Wheel` a series ol miniera! keys controlling the action ot' said act ua! ingr mechanism, locking,r merhanisln normally disconnected from the keys for prevention overthrow of said master wheel, and nicnas enabling each key as it controls said artuning mechanism. to disengagre itselt therefrom and then engage and operate said loi-lfing* mechanism to prevent overthrow ot' said master Wheel attcr the drive thereolf by said actuating n'ieehanism has ceased.

Q7. The combination with a series ot eumputing Wheels, oit a master vfheel tor dri. ieg said computing` Wheels, actuating' mechanism vlor said master Wheel, a series of numeral keys controlling the action of said actuating' mechanism, locking` mechanism tor preventing` overthrow ot' said master Wheel, and means enabling each key, after eontrollinff the action of said actuating mechanism. to disengage itself therefrom and then momentarily operate said locking mechanism lit) to prevent overthrow of said master wheel and subsequently escape from said locking mechanism to enable said locking mechanism to free itself from said master wheel.

28. The combination with a series of computing Wheels, of a master Wheel for driving said computing Wheels serieta'm, a traveling carriage, said computin Wheels being mounted to travel with sai carriage, an cscapement mechanism for said carriage, an escapement mechanism for said master Wheel, a series of numeral keys for controlling the drive of said master wheel and the escapement mechanism of said carriage, means for actuating the escapement mechanism of said master Wheel on the driving stroke of a key and before actuation of the escapement mechanism of said carriage, to enable the engagement of the master Wheel with the next loWer computing wheel before the carriage is released for a step-by-step movement, and means to cause said master wheel and said computing Wheels to travel together with said carriage during the stepby-step movement thereof.

29. The combination with two primary elements, to Wit, a series of computing Wheels and a master Wheel, of a carriage traveling and controlling during its traveling movement, a relative movement between said primary elements, so that said master Wheel may drive said computing wheels seriatm, means for anticipating a relative movement between said primaryi elements by a movement of one of said primary elements, to brine' said master Wheel into register with the neXt computing wheel, and means for returning said last-mentioned primary element with the ensuing step movement of said carriage, so as to maintain said master wheel in register With the computing Wheel with which it is anticipatively in engagement, during the movement of said carriage.

30. The combination with tivo primary elements, to Wit, a series of computing Wheels and a master Wheel for driving said computing Wheels sew'atz'm, of a carriage tor controlling said primary elements, one of said primary elements traveling continuously with the carriage, means enabling the second of said primary elements to travel to anticipate the traveling movement of the first of said elements, and means for moving both said primary elements together when the first o said elements moves with said carriage.

31. The combination with a series of computing Wheels, of a master Wheel for rotating said computing Wheels seriatz'm, said master Wheel and said computing Wheels having a relative traveling movement to enable said master Wheel to register Seniat/m With said computing Wheels, a series of numeral keys for controlling the rotation ol' said master wheel, and means acting during the down stroke of each numeral key, to bring about said relative travcling movement between said master Wheel and said computing wheels, so as to cause a change in registation during the dovvn stroke oi' each numeral key, of the master wheel from one computing Wheel to the next succeeding computing vvheel.

32. The combination with a series of computing Wheels, of a master Wheel Jfor driving said computing Wheels, a carriage travcling to effect a relative movement between said computing Wheels and said master Wheel, said computing Wheels traveling with said carriage, and means for effecting a double feed of said master Wheel so as to move While said computing Wheels are stationary, and also so as to move with said computing Wheels when said computing yfheels travel with said carriage.

33. 1n a combined typevvriting and computing machine, the combination with a carriage, of printing mechanism, a series of computing Wheels, a master Wheel for engaging said computing Wheels seriez/im to drive the same, a series of numeral keys for controlling the action of said master Wheel, said carriage and said printing mechanism; operating trip connections from said numeral keys for turning said master Wheel, means for locking said master Wheel when said turning movement by said numeral keys is completed, means for jumping said master Wheel from the computing Wheel it has just turned to the live computing wheel, and a connection operable by said keys common to said locking means and said jumping means.

3,4. In a combined typewriting and computing machine, the combination with a carriage` of a series of computing Wheels, a master Wheel for driving said computing wheels Seniat/im, a series of numeral keys tor controlling the movement of said carriage and the rotation o'E said computin wheels, means for driving said master Whee from said numeral keys, means for locking said master Wheel as its rotation by a key is completed, and means for jumping said master Wheel to the live computing Wheel as it complet-es the turning of a computing Wheel, and means connected to each key for actuating said driving means and subsequently said locking and iumping means.

35. 1n a combined typewriting and computing machine, the combination with a series of computing Wheels, of a master Wheel engaging and driving said computing Wheels seretim, a series of numeral keys for driving isz-iid master Wheel, a member for each numeral key, connections from said members to drive said master Wheel, a trip carried by each member, means operated thereby for locking said master Wheel after it has been turned by any one of said numeral keys, and means for disconnecting each member as actuated by the corresponding numeral key, so as to interrupt the connection between the numeral key and the master Wheel.

36. In a combined typewriting and computing machine, a series of computing wheels, a master wheel for driving said computing wheels sem'atim, a series of numeral keys for controlling said master Wheel, a member for each of said numeral keys, forming part of a connection between the numeral keys and the master wheel, a tri carried by each member, means contro led thereby for jumping the master wheel to the next computing wheel, and means also operated by said trips for positively locking said master wheel against rotation just before it is jumped from one computing wheel to the next computing wheel.

37. The combination with a series of computing wheels, of a master wheel for driving said computing Wheels seriatz'm, driving mechanism for driving said master wheel, a series of numeral keys for controlling the extent of drive of said master wheel by said driving mechanism, a series of individual connections to said numeral keys, each of such connections arranged to operate said driving mechanism and disengaging itself therefrom durin a down stroke of the numeral keys, loc ing mechanism for said master wheel, jumping mechanism for said master wheel, and tripping devices operated by said individual connections for actuating said jumping mechanism to bring the master wheel into register with the next computing Wheel and concomitantly actuate said locking mechanism to prevent the rotation of the master wheel while jumping from one computing wheel to the next computing wheel.

38. A computing typewriter combining numeral keys, a master wheel, a totalizer comprising denominational digit wheels, a carriage providing relative traverse between master wheel and totalizer, means to enable the numeral keys to effect a feeding movement of the carriage, means to enable the numeral keys to control the drive of the master wheel, and means for automatically effecting connection between the master wheel and the digit wheel of next lower denomination during the downstroke of each numeral key after the digit wheel at the master Wheel has been turned by said key, said last-named means acting independently of the feeding movement of said carriage.

39. A combined typewriting and computing machine having computing mechanism including denominational members, a master member, and a step-by-step feeding carriage; and comprising, A1n combination,

means for jumping the master member to the dcnominational member of lower order prior to the carriage movement and in a dirortion opposite thereto, and means to move the master member and computing mechanism with the carriage and in the same direction during a substantial part of the stcp-by-step feeding movement of the carriage.

l0. A combined iypewriting and computing machine, having computing mechanism comprising denominational members, a master member therefor, a step-by-step letterfeeding carriage, an escapement mechanism therefor, said computing mechanism being movable in the same direction as the letterfeedin n'iovement of said carriage; and comprlsin in combination, means for jumping t e master member to the denominational member of lower order, prior to thc carriage movement, and in a direction opposite thereto, and means acting through the medium of said escapement mechanism for moving said master member and earriage in the same direction during the letter-feeding movement of said carriage, to thereby maintain said master member in engagement with said denominational member of lower order during said movement.

41. A combined typewriting and computing machine, having computing mechanism, comprising denominational members, a' master member therefor, a step-by-Step letterfceding carriage, an escapemen-t mechanism therefor, including an cscapement shaft, said computing mechanism being movable in the same direction as the letter-feeding movement of said carriage and comprising, in combination, means for jumping the master member to the denominational member of lower order prior to the carriage movement, and in a direction opposite to such movement, comprising a pawl connected to the master member, and a spring for acting on said pavvl, and means comprising a ratchet on said escapement shaft for positively engaging said pawl durin the normal turning of said shaft to fee said carriage in letter-space direction, for moving said master member in the same direction as thc carriage movement during the letterfeeding movement thereof, to thereby maintain said master member in engagement with said lower computing member during said movement. i

42. A combined typewriting and computing machine, having computing mechanlsm, comprising denominational members, a master member therefor, a step-by-step letterfeeding carriage, an escapement mechanism therefor, said computing mechanism being movable in the same direction as the letterfeeding movement of said carriage; and comprising, in combination, means for jumping the master member to.the denominational member of lower order prior to the carria e movement and iu a direction opposite t creto, comprisinfr a paul connected to the master member, and a spring fory acting on said` pawl and means for putting said sprinnr under tension through the medium of said escapement mechanism on the letter-feeding movement of said carriage, said spring being released from tension; subsequent to the completion of the stepping movement of the carriage.

43.1111 a computing machine, the combination with computing mechanism, a master wheel. therefor, and4 keys for driving said master. wheehof a member universal to. said keys, connections,between Said keys and said member, said member having arms projecting in, dillfenentY .radial directions for engagement bysaid. connections, whereby Said keys may diil'erentially drive said` master Wheel, and means or disengaging each of said connections from its corresponding radial arm at thesame point in the4 down-stroke of cach numeral. key.

44. In; a computing machine, the combination) ith computiln mechanisma master wheel ieliefor,y and eys for differentially driving said master wheehof means to disconnect Saiid keys and master Wheel at the same pointinthe down-strokeof each key, and means common to all; of said keys and operated. immediately aiiter, any key has reached; said point, of disconnection to prevent, overthrow of said` inasterwheel.

45,1111` a, computing machine, the combination withicomputng mechanism, a master wheel therefor, andv keys for driving said master. Wheel, `of a mem r universal to said keys, connections between said keys and said membensaid member, adaptedto be engaged and. .differentially driven by said connections, meanstodiscomlect, said keys and master Wheel atA the Same pointA in the down-stroke of eacl1 keyand means for preventing overthrow ffsalidA masterfwheel when driven by any. key, Sad, overthrow-preventing means including 21:.member. having4 a series of, arms projecting in the same direction, each adaptedtobeenga Aedby each key connection immediately. ater said connections have reached. saidfpoint of disconnection from said. universal-member.

l46, In,aconiputingmachine, lhc combination with computing mechanism, a master Wheel, therefor, ,and keys for, driving said mtenW-heel, of@ a member universal to said keys, connections between said keys and said member, said, member having arms projectinggindierentn'adial directions for engagementby said cnnnections,l whereby said keys may diiolientiallydrive. said master Wheel, means for, dingagingeach ofsaid connections flomnts corresponding radial arm at thersanie point. in the down-stroke of each numeral key', and means for preventing overthrow of said master wheel when driven by any key, said meansl including a. member having a series of arms projecting in the same direct-ion, each adapted to be engaged by cach key connection immediately after said connections have reached said point of disconnection from said universal member.

47. In a combined typewriting and computing machine, the combination with computing mechanism, a letter-feeding carriage, and numeral keys controlling said carriage,

of a master Wheel driven by said keys, and

means controlled by each numeral key on its down-stroke for preventing overthrow'of the master Wheel driven' thereby, and causing the master 'wheel to automatically jump to the live computing wheel in anticipation of the feeding movement of the carriage.

48. In a combined typevvriting and computing machine, the combination with computing mechanism, a letter-feeding carriage, and numeral keys controlling said carriage, of a master Wheel driven by said keys, and u member universal to all of said keys to prevent overthrow of said master wheel when driven by any key, and to cause said master Wheel to jump to the live computing Wheel in anticipation of the feeding movement. of the carriage.

49. In a combined'typetvriting and coniputing machine, the combination with computingmechanism, a letter-feeding; carriage, and immoral keyscontrollingsaid carriage, of a master wheel drivenby said keys, and al universal member actuated by any of said kcyson their down-strokes to cause saidmaster wheel, to jump tothe live computing wheel` in anticipationof the feeding movement of the carriage.

50. Ina combined typewriting and computing machine, the combination with c0mputing mechanism, a; letter-feedingv carriage, and numeral keys controlling said carriage, of a master Wheel` driven by, said keys, a universal member for operating said master wheel, and a universal, member controlling thegjnmpingof sa'idmaster wheel to the` live computing 'wheelfin anticipation of the computing'l movement of said'vvlieel,l both said universal members being controlled by Said numeral keys.

5'1. In a combined typewriting and computingmachine, the combination with compui ing mechanism, a letter-feediugfarriage, and numeral keys controlling saidcarriage, of a master wheeldriven by said keys` a universal member controlling; the 'operation of said master Wheel by saidinuineral keys, and a universal member for preventing overthrow of said master Wheel after being driven by each key, said numeral keys :1cting on said universal members successively.

52. In a combined.typewritingand com- |n1ting 1n`achine, the combination with computing mechanism, alette-feeding carriage,

and numeral keys controlling said carriage, of a master wheel driven by said keys, a universal member to operate said master wheel, a second universal member, and means controlled thereby to prevent overthrow of said master wheel driven by any key and also to control the jumping of said master wheel to the live computing wheel in anticipation of the carriage feeding movement, said keys operating on said universal members successively.

In a combined typewriting and computing machine, the combination with computing mechanism, a master Wheel therefor, a letter-feeding carriage, and keys for differentially driving said master Wheel and controlling said carriage, of means to disconnect each of said keys from said master wheel at the same point in the down-stroke of each key, and means controlled by said keys immediately after reaching said point to cause said master Wheel to jump to the live computing wheel in anticipation of the feeding movement of the carriage.

54. In a combined typewriting and computing machine, the combination with computing mechanism, oi a master wheel therefor, a letter-feeding carriage, keys, connections from said keys for di'erentially driving said master wheel, said connections including a member universal to said keys, said member having arms projecting in different radial directions for engagement by said connections whereby said keys may differentially drive said master wheel; means for disengaging each of said connections from its corresponding radial arm at the same point in the down-stroke of each numeral key, and means for causing said master Wheel to jump to the live computing Wheel in anticipation of the feedin movement of the carriage immediately a ter said key has reached said point of disconnection, said means comprising a member havin a series of arms projecting in the same ra ial direction, each arm adapted to be engaged by each key connection after said connections have reached said point of disconnection from said universal member.

55. In a combined typewriting and computing machine, the combination with computing mechanism, a master wheel therefor, a letter-feeding carriage, and numeral keys controlling said carriage and master Wheel, of connections between the numeral digit keys and said master wheel for controlling the latter, and connections from said digit keys and the zero key for controlling the jumping of the master Wheel to the live computing Wheel in anticipation of the feeding movement of said carriage.

56. In a combined typewriting and computing machine, the combination with computing mechanism, a master Wheel therefor, a carriage, and numeral keys controlling said carriage and master Wheel, of means for jumping the master Wheel automatically to the live computing wheel as soon as it has turned a computing Wheel, connections from said numeral keys to said jumping means, and from said numeral keys to said master Wheel, said connections including a plurality of members, all of said members connected to said digit keys having a trip for operating said master Wheel, and a trip for operating said master-Wheel jumping means, the member connected to the zero key having a trip for the master-Wheel jumping means only.

BURNHAM C. STICKNEY.

Witnesses C. Rummy, B. GOLDBERG.

Copies of this patent may be obtained for tive cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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