US1302032A - Combined type-writing and computing machine. - Google Patents

Description

W. L. GUMPRECHT.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APR. 5. me.

Patented Apr. 29, ISHS.

3 SHEETS-SHEET I.

INVENTORf ATTORNEY.

WITN ESSES 4 W. L. GUMPRECHT.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

APPLICATION FILED APR. 5, |916.

INVENTOR= WITN ESSI- S GMM@- 2mg/Maw W. L. GUMPRECHT.

coMBmED TYPE wRmNG AND COMPUTING MACHINE.

APPLICATIN FILED APR.5.1916.

Patented Ap.. 29,1919.

3 SHEETS-SHEET 3.

, v INVENTOR= www@ BY 'M/fw@ ATTORNEY.

WITN ESSES' UNITED STATES PATENT OFFICE.-

WILLIAM L. GUMPRECHT, OF HARTFORD, CONNECTICUT, ASSIGNOR TO UNDERWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, N. Y., A CORPORATION 0F NEW YORK.

COMBINED TYPE-WRITING AND COMPUTING MACHINE.

Application led April. 5, 1916. Serial No. 89,015'.

T 0 all ywhom it may concern Be it known that I. 'ILLIAM L. GUM- rnEcH'r, a. subject of the King of Great Britain, residing in Hart-ford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Combined Type-"liting and Computing Machines, of which the following is a specification.

This invention relates to combined typewriting and computing.machines, and more particularly to means whereby the pointing ott' or spacing between figures, asbetween dollars and cents, and between hundreds and thousands, etc., is done automatically in the regular course of writing numbers. This invention is herein disclosed in the nature of an improven'ient on the application of Frederick A. Hart, Serial No. 79,969, filed February 23, 1916, (now Patent No. 1,282,- 823', dated October' 29, 1918,) and also on the application of Andrew W( Steiger, Serial No. 87,672, tiled March 30, 1916.

In the applications above referred to, the mechanism includes an escapement wheel which cooperates with a fixed and a loose dog, both supported by a pivoted dog rocker, the. latter controlled by character keys to effect letter-feed movements of the typewriter carriage. Said applications also 1nclude mechanism to etfect double-space movements of the typewriter carriage at points where it is desired to space between the figures, by automatically shifting a stop member which controls the throw of the loose dog; the .stop member being shifted by means of a bail provided with tappets which are engaged lby a projection on a tabulator stop, during the travel of the typewriter carriage.

In said application No. 87,672. there is shown means whereby, when the computing mechanism is disconnected by operating a disconnect key, the double-spacing mechanism is rendered ineffective.

A feature of the present invention is the provision of means whereby the double-spacing mechanism is rendered ineffective when a case-shift key is operated, as it is often desirable to print in upper-case position without such double-spacing mechanism coming into use,v particularly where the typebars actuated by the numeral keys Carry (hfi ferent tvnes in the upper-case position.

A further feature of the present invention relates to means whereby a tappet plate, designed for one class of work, as, for example, for writing numbers, as dollars and cents, where automatic spacing' is desirable at the decimal position and between the hundreds and thousands denominations, etc., may be readily replaced by another tappet plate carrying a differently arranged set oftappets suitable for a ditl'erent class of work, as, for example, tabulating numbers without decimals. For this purpose, the tappet plate may be removably attached to the swinging tappet bail as by means of screws, such arrangement being also convenient for the purpose of permitting the tappets, which are subject to wear, to be case-hardened.

' the numeral keys to set up pins correspond.

ing to the operated keys. Said tappet is held in position to operate the jacks by a cam connected to a rock shaft, which shaft may be rocked to move the cam to inoperative position when the disconnect kev for the computing mechanism is operated.' In the present invention, said rock shaft may also be actuated as by an arm on the platenshift frame when a case shift key is operated. Said rock shaft, when actuated either by the disconnect key or the case-shift key, swings to inoperative position the tappetcarrying bail which controls the doublespacing mechanism.

The present invention as herein shown, is applied t0 a combined typewriting and computing machine of the type shown in the patent to Hans Hanson, No. 816,319, dated March 27, 1906, and in the patent of Frederick A. Hart, No. 1,190,171, dated July 4, 1916.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

AConnection between the shi Figure 1 is a transverse vertical section of the machine, some of the parts being broken away, others being omitted.

Fig. 2 is a detail front elevation of the upper portion of the bracket in which the tabulator plunger stops are mounted, with part of the space-skipping means supported thereon.

F ig..3 is a plan view of Fig. 2.

Fig. 4 is a skeleton perspective View illustrating myv invention and showing the connection from the non-add key and the shift key. to the tappeted bail.

Fig. 5 is a fragmentary side elevation showing the tappeted bail swung to its inoperative position and the computing machine set to disconnect.

Fig. 6 is a fragmentary front elevation of t-he typewriter escapement, showing the parts in a position to allow the typewriter carriage to move single letter-space distances.

Fig. 7 is a similar view with the escapement dogs rocked rearwardly in normal letter feeding.

Fig. 8 is a View similar to Fig. 7, except that the stop member is shifted to effect a double-space movement 0f the typewriter carriage.

Fig. 9 is a developed diagrammatic view, showing enough of themachine to illustrate the application of my inventionin a simple manner.

The typewriting machine, except some of the carriage-feed devices which will herein after be fully described, is ofthe usual Underwood construction, in vwhich numeral.

rock shaft 24. AV shift key 25 when de! pressed, moves the lever 26 provided with an arm 27. The latter rocks a shift frame 28 on a rock shaft 29 to elevate a shift rail 30 carried thereby, moving the platen .frame 22 upwardly and thus shiftin the platen 20. rail 30 andthe platen frame 22 is made in the usual manner by a roller 31 on a linger 32 carried by a bar 33 on the platen frame:

The typewriter carriage is under constant tension of the spring drum 35'connected'to the carriage bya strap36- (Fig. 4). vA rackV 40 is pivotally mounted on the typewriter,

carriage '34 and engages with a pinion 41 to rotate an escapement wheel 42 providedr with teeth 43. The pinion 41 is connected with the escapement wheel by the usual oneway driving pawls 44. This eseapement wheel coperates with a loose' dog 45 and a fixed dog 46 mounted on'a dog rocker 47, the dog rocker being pivotally supported by an escapement bracket 48.

The escapement, except the double-space feature herein described, is in many respects like that described in the patent to Rice et al., 769,804, dated September 13, 1904, and is operated in the following manner.

' Each type bar 16 is provided with a heel 50 which, as the type bar swings to printing position, moves a universal bar 51 rearwardly against the tension ofa spring 52 (Fig. 4) and rocks the dog carrier against the tension of a spring 53 (Fi 6). The spring 53 serves the double lnction of swinging the loose dog about its pivot 54, when the upper 4part of the dog rocker is moved rearwardly, and also returning the dog rocker to normal position. (See the aforesaid patent to Rice et al.) l During the operation of the type bars 16, the dog rocker 47 is caused to vibrate transversely of the escapement wheel 42, thus bringing the teeth 43 of the escapement wheel into cop- (ration alternately with the loose and fixed When the dog rocker is moved rearwardly, the loose dog45 is disengaged from a tooth 43 of the escapement wheel, after the fixed dog 46 has moved into a position to engage said tooth and hold the escapement wheel. The loose dog, when thus disengaged, is permitted under the influence of the spring 53, to swing on its pivot until it is arrested by a stop 55 (Fig. 7), and when thedog rocker is .brought back to normal position, the loose dogl will be brought into the path ofthe next succeeding tooth 43 of the es- ,l f

capement wheel 42, and the xed dog will be withdrawn from the path of the teeth. The wheel being now free, is rotated, causing said succeeding tooth 43 to swing the loose dog about its pivot 54 back to normal position (Fig. 4) against a stop 56 on the dog f rocker 47, thereby larresting the carriage which has been moved a letter-space distance by the spring drum 35.

Y The tabulator, except some of the stops on thev stop bar, is of the regular Underwood construction, comprising keys 60, each of which, when depressed, swings a lever 61- about a fulcrum 62, to lift a denominational stop, in the form of a plunger 63into the path of a column-stop 64 on a sto bar 65, supported on` the carriage 34. ile -the plunger is thus being moved, thek typewriter carriage is released by the plunger engaging v with a pivoted universalbar 66, to move a link V67 downwardly and swing a'lever. 68 about its pivot 69, thus ,raising the rack 40 out of engagementwith thepinion' 4l, andv setting the typewriter 'carriage free from the escapement device, to be moved by the sprlng drum 35. The carriage will ,run until the tabulator stop 64 strikes the projected plunger 63.- Thus the carriage is arrested at the denominational position corresponding to the actuated key 60. In the present case I have shown eleven plungers, each being provided with a key 60 and a lever 61.

The computing mechanism comprises the usual denominationselecting tappet 75 which, when a computing zone is reached during the travel of the typewriter carriage, rides upon a ca1n'r'oller'76 located under a set of jacks 77, where it is held in effective position by the usual spring 77a, as set forth in my Patent No. 1,237,895, dated August 21, 1917, so that the tappet rocks the jacks one at a time. `Each jack moves a corresponding thrust rod 78 downwardly to swing a lever 79 about a fulcrum 80, caus` ing one of the links 81 to raise one of the computing bars 82 so that pins 83 thereon are brought into coperative relation with linkages 84. If` a numeral key 11 is depressed while a computing bar 82 is raised, a stem 85 on the key lever 13 rocks a shaft 86 to move its corresponding linkage 84 and' set one of the pins 83 on the computing` bar 82. Thus the lower end of the pin 83 will be in a position when the computing bar is lowered,to be engaged by a horizontal bar 87 of the general operator which, at the proper timeis operated by the handle 88 to move the bar 87 forward. `The computing wheels 89 are operated and the computation completed substantially in the manner described in said Hanson Patent, No. 816,319.

To disconnect, or in other words, to make the computing mechanisml inoperable when writing numbers in the computing Zone, the cam roller 76 is moved rearwardly where it will not engage with the tappet 75 during the travel of the typewriter carriage. Thisis accomplished by actuating a non-add or disconnect key 90 which moves a thrust rod 91 to rock a lever 92- about its pivot 93. A roller94 on the lever 92 engages with an arm 95 to rotate a rock shaft 96, and move a frame 97, thus carrying the cam roller 76 out of the path of the tappet 75.

To disconnect during case-shifting operations, which is desirable when the numeral type bars are provided with another character, the cam roller 76 is moved to inoperative position by providing the rock shaft 29 with an arm 98 having a roller 99 to engage with a cam in the form of a hook-shaped arm 100 secured to the rock shaft 96. It will be seen that when the shift key 25 is depressed, the roller 99 moves downwardly on the cam 100, rocking the shaft 96 to move cam roller 76 out of the path of the tappet 75.

From the foregoing description it will be seen that the cam roller is moved to inoperative position by an actuation of either a non-add key or a .platen-shift key.

The shift key 25 and the non-add key 90 may be provided with a means for locking them in their actuated position. In the present case I have shown the non-add key provided with the usual lock which comprises a pin 101 projecting laterally from the thrust rod 91y into 'a slot 102, the pin 101 being of a suiiicient length to permit manipulation by the fingers for moving into a depressed portion 103 of the slot 102 when it is desiredl to lock the non-add key in its actuated position. f

Double-space movements of the typewriter carriage at predetermined positions during its travel are effectedV in the following manner. i

The stop 55 which normally controls the swinging or loose dog 45, as hereinbefore described, is carried on a shifta'ble stop member or double-space permitting element 105 pivoted on a stud 106 secured to the escapement bracket 48, the lever being held in position lengthwise of the stud by nuts -107 and 108 (Fig. 4). A second stop 109 on said member 105 is so positioned that when the member 105 is rocked from the Fig. 7 position to the position indicated in Fig. 8,

Aa stop 109 is brought into the path of the loose dog 45. It will be understood that in the Fig. 7 position, the swinging dog 45 is arrested by a pin 110 on the dog coming in" contact with the stop 55, and in the Fig. 8 position, the loose dog is arrested by the rounded' portion 111 engaging with the stop 109. If the dog rocker 47 is now rocked to disengage the fixed dog 46 from the escapement wheel, the latter is permitted a doublespace movement as one tooth 43 has been skipped by the pivoted loose dog 45. v

The shiftable stop member or doublespace permitting element 10.5 is heldin its normal position by a spring 115 which causes an arm 116to bear against the escapement bracket 48, and is rocked to its doublespace permitting position against the tension of said spring 115 in the following manner. Those of the tabulator stops 64 which are used for determining the position of a column of figures wherein it isdesired to skip the punctuation spaces, are provided with extensions 117 which, during the travelof the carriage, engage with tappets 118 on a plate 119 which is secured to a pivoted bail 120. The forward portion of the bail 120 is depressed whenever the extension 117 engages one ofthe tappets 118 which causes ythe stop member 105 which is connected to said bail by a link 121, to be shifted to the Fig. 8 position, where the stop 55 has been taken out of, and the stop 109 brought into coperative relation with the loose dog 45.

It is desirable to harden the tappets 118 as they are exposed to wear. I have therefore formed them on the plate 119 which may be secured to the bail 120 in any convenient manner, as for example, by means of screws 1191. This arrangement permits the tappet plate 119 to be quickly removed and replaced by another plate with -differently disposed tappets, positioned for automatic spacing at different denominational positions,as may be desired, for example, in writing numbers without monetary decimals.

movements of the carriage', let it be assumed that the carriage has reached the ten thou.- sands position in an adding zone. In this position the extension 117 of the tabulator stop 64 will be at the right of and adjacent to the middle tappet 118. If we now print in this position, the escapement mechanism will operate as usual to permit the carriage to advance a single letter-space distance. This movement of the carriage, however, will cause the tabulator stop to swing the bail 120 downward against the tension of the spring 115 and through the link 121 shift the stop 109 to the Fig. 8 position, so that on the next depression of a numeral key (the carriage now being in the. thousands position) the loose dog (as the dog rocker -swings rearwardly) will 'be permitted to move to the position 'shown in Fig. 3, where v the dog 45 is arrested by the stop 109. When the dog rocker is allowed to return to normal position, the loosedog will move back 'of the adjacent tooth 43 and engage with the next tooth, permitting a double-space movement of the escapement wheel, and the carriage will be fed two letter-space distances. Automatic double-spacing is in like' manner effected at the decimal point position and at any other desired point in the computing zone, by correspondingly located tappets 118. To make the double-spacing mechanism ineffective, which is desirable when the platen is shifted to upper case position, or

when the computing machine is set to disconnect, I have found it advantageous to provide the rock shaft J6 with arms 125 having the pins 126 thereon which, (Fig. 9), normally restrain dwells 127 of the cams 127, thus holding the levers 12S-and bail 120 in position, but which, when the shaft is rocked, move in the cam slots 127 to swing forwardly the levers 128 pivoted to the tabulator plunger bracket 12S) by screws 130. Thus the. parts will be brought to the position shown in Fig. 5, where the bail 120 has been swung about its point of connection to the. link 121 to lower the tappets 118 out of the path of the projection 117 on the talmlator stop (34.

It should be,v understood that the bail 120 can be swung about two pivots, and that means are provided to swing it about. one

To explain more clearly the double-space shift key.

To permit an adjustn'ient ofthe bail. 120 so that the tappets 118 cooperate with the tabulator stop at the proper' time during the travel of the typewriter carriage, I have provided a screw 132 (Fig. 3.), Secured to one of the levers 123, and nuts 133 and 134, 'the nut 131 being provided with a shoulder 135 on which one arm of the bail 120 is pivoted. T'he other arm of the bail is pivoted on a stud 136 secured to the other lever 128. It will be seen that after loosening the nut 133, the nut 131 can be moved to the right or left, for the purpose of adjusting the bail vwith adjusting screws, the other side being free to move lengthwise of the pivot pin 136 during an adjusting operation.

Variations may be resorted to within the scope ofthe invention, and portions of the improvemei'its may be used without others.

Having thus describedv my invention, I claim:

1. Ina combined typewriting and computing machine. the combination of a carriage, a variable feed escapement for said Carriage, an element traveling with said carriage, means controlled from said element for permitting double-space movementof the carriage at Ipredetermined positions in its travel, printing mechanism, a.case shift key, computing mechanism, a disconnect key for rendering said com'pi'iting mechanism inopera- 115 tive, and means controlled from either the case shift key or the disconnect key for rensponding to the keys actuated, eseapement mechanism to control the letter-feed movements of the carriage, means to automativcally effect a double letter-space movement of the carriage when the latter reaches a predetermined denomination during the writing of a number, a key operable to disconnect the computing mechanism, a case-shift key, and means operable by either of said lastmentioned keys to disconnect said doublespace means.

3. In a combined typewriting and computing mach-ine, the combination with a carriage and propelling means therefor, of escapement mechanism, computing devices,

character keys, including numeral keys adapted to effectcomputations in said devices, type-bars actuated therebv and coin- 2prising upper and lower case type, casecapement mechanism actuated bv said keys,

means operable automatically to control the escapeinent mechanism and to effect an unequal spacing between the several digits of a number being written, a non-add key, means operated 'thereby to render ineffective said computing mechanism, a case-shift key, and means controlled by each of the two lastmentioned keys to render ineffective said escapement controlling means.

5. In a combined typewriting and computing machine, the combination with a paper carriage and propelling means therefor, of escapeinent mechanism, computing mechanism, a series ofjacks mounted on themachine frame, a tappet on the carriage-to operate said )acks seram during the travel of the carriage while the latter is in a comj puting zone, said jacks operable to control-fv the computing mechanism, a tappet holding device to hold said tappet in operative position, a rock shaft to which said holding device is connected for swinging the latter into and out of operative position, double-spacing mechanism coperat-ing with the escapement mechanism to automatically effect a doublespace movement of the carriage when a predetermined denominational osition is reached during the printing o a number, said double-spacing mechanism comprising a swinging frame supported on the machine frame, means on the carriage to actuate said swinging frame` means forming a connection between said swinging frame and said .rock shaft for swinging said frame into position to make the double-spacing mechanism ineffective when the rock shaft is moved to position to make 'the computing mechanism ineffective, a case-shift key, and means actuated thereby to rock said shaft and thereby make ineffective the computing mechanism andsaid double-spacing mechanism.

(p3. In a combined typewriting and computing machine, the combination with a aper carriage and propelling means there or, of escapement mechanism, computing mechanism, a series of jacks mounted on the machine fraine, a tappet on the carriage to operate said jacks serial/afm during the travel of the carriage while the latter is in a coinputing Zone, Said jacks operable to control the computing mechanism, a tappet holding device to hold said tappet in operative position, a rock shaft to which said holding device is connected for swinging the latter into and-out of operative position, doublespacing mechanism coperating with the es- -apement mechanism to automatically effect a double-space m'ovement of the carriage when a predetermined denominational posi.- tion is reached during the printing of a number, said double-spacing mechanism comprising a swinging frame supported on the machine frame, means on the carriage to actuate said swinging frame, means forming a connection between said swinging frame and said rock shaft for swinging said frame into position to make the double-spacing mechanism ineffective when the rock shaft is moved to position to make the computing mechanism ineffective, a non-add key, means actuated thereby to rock said shaft and thereby make the computing mechanism and -said double-spacing mechanism ineffective,

a platen on the carriage, a platen Shift frame, a case-shift key to actuate said shift frame and move the platen to upper-case position, and means operated by said shift escapement mechanism, computing mechanism, a series of jacks mounted on the machine frame, a tappet on the carriage to operate said jacks se/latz'm during the travel of the carriage while the latter is in a computing zone, said jacks operable to control the computing mechanism, a tappetholdingdevice to hold said tappet 1n operative position, a rock shaft to which said holding device is connected for swinging the latter into and out of operative position, double-spacing mechanism coperatin with the escapement mechanism' to automatically effect a doublespacc moyen'ient of the -carriage when .a predetermined denominational position is reached during the printing of a number,

said double-spacing mechanism comprising a swinging frame supported on the machine frame, means on the carriage to actuate said swinging frame, means'forming a connection between said swinging frame and said rock shaft for swinging said frame into position to make the double-spacing mechanism ineffectivewhen the rock shaft is moved to position to make the computing mechanism ineffective, a case-shift key, aA disconnect key for the computing mechanism, and means operated by each of said keys to rock said shaft for making the computing mechanism and the double-spacing mechanism ineffective. i

8. In a combined typewriting and computing machine, the combination with a carriage 'and propelling means therefor, of numeral keys, numeral types operated thereby, computing mechanism controlled by said keys, escapement mechanism actuated by said keys and operable to effect a. movement of the carriage at each operation of a key, means operable automatically to conytrol the escapement mechanism and to effect an unequal spacing between the several digits of a number being written, a denomination selector for said computing mechanism, a support for said selector adapted to be moved to ineffective position, a lever connected to said automatically controlling means, a cam on said lever, and an arm connected to said support and adapted to operate said lever by said cam.

9.*In -a combined typewritin and computing machine, the combination with a carriage and propelling means therefor, of

numeral keys, numeral types operated there-v by, computing mechanism controlled by said keys, escapement mechanism ac-tuated by said keys and operable to effect al movement ofthe carriage at each operation of a key, means operable automatically to control the escapement mechanism and to effect an unequal spacing between the several digits of a number being written, a denomination selector for said computing mechanism, a support for said selector adapted tobe moved to ineffective position, a lever connected to said automa-tically controlling means, a cam on said lever, a non-add key adapted to make said support ineffective, and an arm connected to said support and adapted to operate said lever by said cam.

10, In a combined typewriting and computing machine, the combination with a carriage and propelling means therefor, of numeral keys, numeral types operated thereby, computing mechanism controlled by said keys, esca-pement mechanism' actuated by said keys and operable to effect a movement of the carriage at each operation of akey, means operable automatically to control the escapement mechanism and to effect an unequal spacing between thc several digits of a number being written, a denomination selector for said computing mechanism, a support for said selector adapted to be moved to ineffective position, a lever connected to said automatically controlling means, a cam on said lever, a case-shift key adapted to make said support ineffective, and an arm connected to said support and adapted to operate said lever by said cam. y

l1. In a combined typewriting and computing machine, the combination with a carriage and propelling means therefor, ofv

numeral keys, numeral types operated thereby, computing mechanism controlled by said keys, escapemcnt mechanisml actuated by said keys and operable to effect a movement of the carriage at each operation of a. key, means operable automatically to control the escapement mechanism and to effect an unequal spacing' between the several digits of a number 'being written, a denomination selector for said computing mechanism. a support for said selector, a shaft carrying said support, anV arm fast to said shaft, a lever .connected to said automatically controlling means comprising a cam operated by said arm, a second arm on said shaft, a non-add key, and a lever operated by said non-add key adapted to be effective on said second arm to make said support ineffective, and thereby carry the automatically controlling means to ineffective position. f

12. In a combined typewriting and computing machine, the combination with a carriage and propelling means therefor, of numeral keys, numeral types operated ther by, computing mechanism controlled 'by said keys, escapementmechanism actuated. by said keys and operable to effect a vmovement of the carriage at each operation of a key, means operable automatically to control the escapcment mechanism and to effect an unequal spacing between the several digits of a number being Written, a denomination se-y lector for said computing mechanism, a support for said selector, a shaft carrying said support. an arm fast to said shaft, a lever connected to said automatically controlling means comprising a cam operated by said arm. a non-add key adapted to carry the automatically controlling means to ineffective position, a case-shift device, and a lever 0perated by said case-shift device adapted to carry the automatically controlling means to ineffective position.

13. In a combined typewriting and computing machine, the combination Witha carriage and propelling means therefor, of numeral keys` numeral types operated thereby, computing mechanism controlled by said keys` esca pement mechanism actuated by said keys and'operable to effect an escapement movement of the carriage at each operation of a key, means operable automatically to control the escapement mechanism and to effect an unequal spacing between the several digits of a' number being written, a lever for supporting 'said automatically controlling means, a cam' for said lever comprising a dwell, a follower adapted to engage said cam dwell to hold the automatically controlling means effective and adapted to be moved to cause the cam to shift the lever to make said means ineffective, and means for simultaneously making said computing mechanism ineffective and operating said follower.

14. In a combined typewriting and computing machine, the combination with 'a carriage and propelling means therefor, of numeral keys, numeral types operated thereby, computing mechanism controlled by said keys, escapement mechanism actuated Iby said keys and operable to effect a movement of the carriage at eachl operation of a key, means op'- erable automatically'to control the escapement mechanism and to effect 4an unequal spacing between the several digits of a number being written, a lever for supporting said automatically controlling means, a. cam for said lever comprising a dwell, a follower adapted to engage said cam dwell to hold the automatically controlling means eiective and adapted to be moved to cause the cam to shift the lever to make said means inelective, a denomination selector for said computing mechanism, a support for said selector'adapted to be moved to ineffective position, an arm connected to said support and carrying said follower, and means for moving said support to ineffective position to cause said automatically controlling means to become ineffective.

l5. In a combined typewriting and computing machine, the combination with a carriage and propelling means therefor, of numeral keys, numeral types operated thereby, computing mechanism controlled by said keys, escapement mechanism actuated 'by said keys and operable to effect-a movement of the carriage at eachl operation of a key, means op- `erable automatically to control the escapement mechanism and to effect an unequal spacing-between the several digits of a numarm, a third arm on. said shaft, a follower on said third arm, a lever connected to said automatically controlling means, a cam on said lever coperating with said follower, and a dwell on said cam to hold said automatically controlling means effective.

116. In 'a combined ty ewriting and computing machine, the comlbination with a carriage and computing devices, of an escapement for said carriage adapted normally to feed single letter-spaces, numeral keys for operating said escapement' and computing devices, a stop adapted to cause said escapement to feed said carriage double letterspaces, a bail adapted to operate said stop, tappets on said bail, a lug on said carriage adapted to operate said bail by said tappets, a swinging lever device on which said bail is pivoted to enable it to be swung to and from said lug, a cam on said lever comprising a dwell, a follower for operating said cam normally resting in said dwell, vand a key adapted to make said numeral keys in- Aeective to compute and adapted to move said follower and said cam to swing said bail to ineffective position.

WILLIAM L. GUMPRECHT.

Witnesses:

J. BAsKERvILLE, SHIRLEY E. GLnDHILL.

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