US927838A - Variable automatic spacing mechanism for combined type-writing and adding machines. - Google Patents

Description

v w. L. DBNCH. VARIABLE AUTOMATIC SPAGING MECHANISM FOR COMBINED TYPE WRITING AND ADDING MAQHINES. nrmonron Hum rim. 11,1908.

. Patented July 13, 1909;

5 SHEETS-B F BET 1.

film/Jar. jwmioz;

mgr-411 1 oath/W 35 W. L. BENCH. "VARIABLE AUTOMATIC SPAGING MECHANISM FOR COMBINED TYPE WRITING AND ADDING MACHINES. APPLICATION nun PEB. 12,1908.

Patented July 13, 1909.

5 SHEETS-SHEET 2.

a w. L. BENCH VARIABLE AUTOMATIC SPAGING MECHANISM FOR COMBINED TYPE WRITING A'ND ADDING MACHINES. APPILIOATION FILED rm.12,190s.

Patented July 13, 1909.

6 SHEETS-SHEET 3.

W. L. BENCH.

VARIABLE AUTOMATIG SPAGING MECHANISM FOB COMBINED TYPE WRITING I APPLIOATION FILED FEB. 12, 1908.

a lull-E.-

AND ADDING MACHINES.

SHEETS-SHEET 4.

Patented July 13, 1909.

W. L. BENCH. I VARIAB E AUTOMATIC SPAGING MECHANISM FOR COMBINED TYPE WRITING AND ADDING MAGEINES. 4 APPLIOATION FILED 33.12, 1908.

5 SHEETS-SHEET 5.

' UNITEDSTATEs-PAT NT oF roE.

WILLIAM L. DENOH,

or PELHAM, NEW YORK, AssIeNoe-To LLIOTT-FISHER COMPANY, or NEW'YORK, N. Y., A CORPORATION or DELAWARE.

VARIABLE AUTOMATIC SPACING MECHANISM FOR COMBINED TYPE-WRITING AND ADDING MACHINES.

1 Specification of Letters Patent.

Patented July 13, 1909,

Application filed February 12, 1908. Serial No. 41.5;469.

Wl'llCll the following is a specification.

My present invention relates to spacing mechanism for machines-(if that class which embrace a traveling carriage movable to different positions to space printed characters or to select different denominations, as for instance of an addlng mechamsm. Type-,

writing machines, computing machines, and

' combined ty ewriting and computing machines are al embraced within the .class mentioned, and my invention may be con-' sidered more specifically as relating to automatic spacing mechanism for combined typewriters and adders.

The machine for the equipment of which the mechanism constitutin my invention has been devised is the Eli chine of commerce.- This machine is what is known as a flat with adding mee anism o 'erated from the numeral keys to add a co umn of numbers as the latter are printed by the typewriter. As is well understood in the art, the typewriter carriage advances step-by-step to space the characters printed, and when numbers of comparatively large denominations are printed, it is customary to leave spaces or print commas between groups of igits. represent money values, a decimal space is left or a decimal point is printed. In order to avoid the loss of time incidental to the printing of the decimal or commas, or the operation of a space key to space the carriage over the comma or decimal spaces,'it has been proposed. to provide automatic spacing mechanism which will effect an exaggerated operation of the ,typewriter escapement w ion a comma'ordecimal space is reached, thus causing the carriage, without attention on the part of the operator,

to space two spaces u )011 the release of the key after printing a character to the left of a given comma or decimal position. Such spacing mechanism is entirely cllicicnt for the performance of its intended functir'm, but the preferences: of certain operators and iott-Fisher maplaten typewriter equipped So also, when the numbers printed the demands of cert-ain'classes of work make it desirable-to vary the condition of the spacing mechanism sothat'. themachine" will automatically space over both comma and. decimal points where speed of operation is the primary consideration, orgautoniaticallyspace over the decimal point alone when'it is desired to print the commas, or entirely eliminate the automatic spacing feature, in order that both the comntia's and decimal points may be printed whorl-speed of oper-' ation is subordinate to the desire to have all of the usual unetuation marks appear in j the printed co umn.

Having these conslderations in mind, the

object of my invention is to produce aspac- I ing mechanism adapted for the-equipment of a machine of the charaeter'specified and capable of securing the recited variationsiof spacing conditions, to-wit, no automatic I5 automatic spacing at the decimal spacin both point alone, or automatic spacing at the, decimal and comma points.

To the accomplishment of this primary object and others subordinate thereto, the *8!) preferred embodiment of'the invention resides in that construction and arrangement of parts to be hereinafter described, illustrated in the accompanying drawings, and suceinctl defined in the appended claims. In sai drawings Figure '1 is a sectional elevation of so much of an Elliott-Fisher'billing machine as is necessary to showtheapplication ofmy spacing mechanism thereto. 1 ig. '2 is a rear elevation of the upper portion of-a machine equipped-with my invention. Fig. 3 is a perspective view of the'spacinq mechanism and associatedparts detached. Fig. 4 is a sectional view of a portion of the car riage casing showing the spacing mechanism in plan, the two extreme positions of the trip 1 arm being indicated'in dotted lines. Fig. 5' is a vertical section through the carriage cas- 1 ing, showing the spacingmechanism in eleva- I 1 tion and indicating in dotted lines the'ex- 100 treme positions of the trip arm and the space key, respectively. Fig. 6 is a sectional view showing a portion of the automatic key connecting mechanism. Fig. 7 is a verticalsectional view through the carriage of the type-, writer, showing the carriage feeding mechanism or escapement and certain of the elements of the automatic spacing mechanism.- Fig. 8 is a detail vicwof the setting ke ffor the spacing mechanism. Fig. 9 is a etail shaft and its associated arm.

cate the three paths ol' movement or" the triparm in the three set positions of the latter.

Each part is indicated by its appropriate reference character, wherever shown.

The lClliott-l isher billing machine illustrated in the drawings comprises a llat plat en 1 upon which the work sheet is supported and over which travels longitudinally'thereol', l'or line spacing, a machine frame 2 which in turn supports a carriage 3 movable transversely ol' the platen to letter space the writing. Mounted on and movable with thccarriage 3 is a downwardly acting printing mechanism including type arms 4 operated through suitable intermediate connections by letter and numeral keys 5 and 6.

The carriage 3 is propelled to the right by carriage propelling mechanism including spring drums, not shown, connected to the carriage by flexible ta es 7, one of which is indicated in Fig. 2. T to step-by-step movement of the carriage for letter spacing is controlled by carriage feeding mechanism operated from the typewriter keys in a manner well understood in the art (see Fig. 7) and including a carriage feed spindle 8 gearedto the frame 2, as indicated at 8", and controlled b an escapement which includes a ratchet Wheel 9 fixed to thespindle 8 and cooperating with two dogs T0 and 11 connected by links 12 and 13 to a vibrator 14, which is in turn connected by a link 15 to an arm of a rock shaft 16 arranged to be rocked byslides 17, which are in turn operated by key-yokes 18 mounted in the carriage of the typewriter and operated, as any given key reaches the downward limit of its movement, to eliect the rocking of the shalt 1c and thus swing the vibrator 14, all as hilly lescribed and shown in Patent No. 765,861 to John A. Smith.

It will be noted that the dog 10 normally en ages the escapmnent wheel 9 and thus holds the carriage against movement. Upon the depression of a key, the dogs are simultaneously moved in opposite directions, the

fdog 1 1 reaching its engaging position before the carriage .is l'LltitSOt and permitting only SLlillGltlllt movement of the wheel 9 to insure the engagement of the dog 10 with the next succe' x-ling tooth ol the wheel when the dogs are again reversed by the action of a retracting spring 15) upon the release of the key. Therefore, as the key is depressed, there is no appreciablemorement ol the carriage, but upon the release or the key'the dog 11 moves out of. engagement with. the whee-Ll) thus of the upper portion ol the carriage 3 (see Fig. 1). The register ill) is ol well known construction and includes a series of denomn national members or number wheels 21 arranged in line and equipped with suitable carrying mechanism whereby the value accuniulated. upon any wheel will. be translerred or carried to the Wheel ol' next higher order. The register constitutes the relatively .lixed unit ol the adding nu-chanism, which latter also embraces a relatively movable unit in the form of actuating mechanism which travels with the: typewriter carriage I; and is presented by the movement of such carriage to stwcessive number wheels. 'lhus upon the depression of-any numeral key of the typewriter to print a digit in a given denmninational position of the adding held or column, the number wheel at corresponding denomination will be moved a number of increments corresponding to the value of the printed digit, thereby accumulating the value of the digit in the register, simultaneously with the printing thereof.

The actuating mechanism embraces a master wheel 22 and suitable differential connections between the master wheel and the several numeral keys 6, the connections being so proportioned that each numeral key will move the master wheel a distance proper-- tionate to the value of said key.

It is thought to be unnecessary to specificall y describe either the register or its operating comiections, but for-a more complete tilSClUSUI't ol these mechanisms, attention is directed to Patents Nos. 825,469 and 829,971 to Laganke and Smith,

The variable automatic spacing mechanism.lhe Elliott-Fisher machine is extensively used for the computation of money values and includes in its organization automatic spacing mechanism arranged to cause the carriage to skip over a predetermined point, as for instance a decimal space, upon the release of a key after the printing of a digit at the left of such space or oint. One form of such mechanism is disc osed in Patent No. 820,879 to Laganke and Smith, but a form more nearly approximating that which is disclosed in the accompanying drawings. is shown in the copending application of John A. Smith, No. 390,360.

Depending from the sing of the register 20 is a decimal spacing tr o 28 in the form of a pointed tooth disposed b the path f a trip arm having pointed tooth 29 which,

when the decimal space is reached by the carria e, engages and passes under the trip 28. The trip arm '29 is secured to-the outer end of a rock shaft 30, which is rotatable and longitudinally movable in a'bearing sleeve 31 projecting through the back wall 3 of the carriage casing, see Figs. 1, 3, 4, 5 and 7.

Adjacent to" the inner end of the rock shaft 30 is secured an arm,32 the free end of which is disposed over the laterally disposed end or lug 33 of. a dog retarding lever 34. The lever 34 is fulcrumed intermediate of its ends upon the back wall of the carriage casing and is extended under the pin 35 projecting laterallyfrom the free end of the dog 10.

We have already seen that the letter space advance of the carriage is effected while the dog is moving back to engage the next succeeding tooth of the ratchet, and it will therefore be obvious that if thisrnovement of the dog to its engaging position is momentarily retarded, the ratchet will be permitted to move the distance of two teeth instead of one before it is engaged and the carriage arrested by the dog. The arts just described aredesigned to effect t is momentary retardation of the dog 10 so that as the carriage moves from the units position it will advance a double space or the distance of two normal letter'space movements, so as to cause the printing point to pass directly from the units to the tenths osition and skip over the decimal space. t will be seen that when the trip arm 29 engages the decimal spacing trip 28, said arm will be slightly depressed, thus rocking the shaft 30 and depressing the arm 32, which in turn depresses the left hand end of the lever 34 and causes the right hand end of said lever to rise and thus, by engagement with the pin 35, to retard the movement of the dog 10 toward its: engaging position, the retardation being obviouslymomentary because of the very brief or mementaryengagement of the 'trip 28 with the pointed tooth 29 of the trip arm.

It is sometimes desirable to render the decimal spaei g mechanism inoperative, particularly inwriting ordinaryrnatter across that area which may be used as the adding field, for instance when the computing device is entirely out of use or when it is desired to write matter across the sheet above or below a'eolumn of numbers which are to be or have the shaft 30 is made longitudinally movable,

as stated, in order to ermit the same to be shifted back tobring t e trip arm 29 into cooperative relation with the trip 28 or forward to present the trip arm out of cooperative relation with said trip. These two positions of the trip arm 29 are the positions a, 12, Figs.

4, 5 and 13, it being obvious that when the trip arm is in position a, its advance with the typewriter carriage Wlll cause 1t to traverse a path in advance of and unobstructed by the decimal trip 28, whereas when the trip arm.

gages the angular forked extremity 40 of a setting lever 41 fulcrumed intermediate of its ends, as indicated at 42, to a bracket 43 secured to the wall 3 of the carriage. The opposite end of the lever 41 is turned to vertical position, as shown in Fig. 9, and is provided with a fork 44 engaging a reduced portion 45 of the rock shaft 30. It will thus be seen that by tilting the space key 36 in one direction the lever 41 will be swung to shift the shaft 30 longitudinally and thus present the trip arm 29 in operative position. Similarly, by tilting the key 36 in the opposite direction, the arm 30 will be withdrawn to its ineffective or inoperative position. Therefore, by manipulating the key 36, the operator may determine'whether or not the automatic spacing mechanism will operate when the tooth 29 of the arm 29 reaches the decimal spacing trip 28.

The provision for both comma and decimal spacing.-The mechanism substantially as thus far described is disclosed in the application of John A. Smith, hereinb efore identified, but it will be noted that thus far we have only considered the mechanism as a meansforsecuring or eliminating automatic spacing. In accordance with my invention, however, the decimal trip 28is made of double width from front to back, as best shown in Fig. 13, and in line with-the rear portion of this trip the register is equipped with suitably spaced additional trips 45 and 46. These trips being of only approximately one-half the Width of the trip 28, are located in rear and outside of the path traversed b \the trip arm when the latter is in position The additional trips 45 and46 are located in' positions appropriate to the comma spaces of the column, so that, if engaged by the trip arm 29, during the movement of the carriage, the latter will be spaced over the comma spaces as well as the decimal space. v-ide for thisengagement of the trip arm with all of the trips, it is merely necessary to so proportion the parts which support and shift the trip arm that the latter may be shifted to any one of three positions instead of to either of two positions, as is disclosed in the Smith application. Thus in accordance with my resent invention, the rock shaft 30 is cngthened somewhat to accommodate the additional movement, and the end 33 of the To pro' retarding lever 34 is of suflicient length to remain in engagement With the arm 31 in each of the three set positions of said arm. Similarly, the key 36.is movable to either of three positions, as shown in Fig. 5, so that the shaft 30 may be shifted endwise to present the trip arm 29 in position a or b, as already described, or in a still more rearward position 0. In this third position the trip arm Will traverse a path obstructed by all three of the trips, to-Wit, the comma trips and 16, and the decimal trip 28. Thus it will appear that by the simple manipulation of the key 36 to either of its three set positions, the operator mayestablish any one of the three desirable conditions of the spacing mechanism, that is to say, this mechanism may be set in inoperative condition when no auto matic spacing is desired (position (I or in condition to secure decimal spacing alone (position 1)), or in conditirm to secure both. comma and decimal spacing (position c). it should be understood, however, that it is within tbepurview of the invention to increase or diminish the number of trips or to increase the number of set positions of the trip arm for the purpose cleansing the latter to move in paths obstructed by selected trips.

The retention of the setting key in its several set positions may be eil'ected by the frictional resistance of the parts or by a dctent of any desired form enacting with the key or some other element of the associated mechanism. Before com-hiding, attention may be directed to the fact that the spacing mechanism coacts with the escapement of the carriage feeding mechanism to exaggerate the normal carriage movement at a predetermined point or at predetermined points and that its operation is entirely independent of any operation of the carriage release key. 'lherel'ore, the escapement of a machine equipped in accordance with my irivention is operated normally to ellect a letter space movement of the carriage by the operation of the letter and numeral keys or is operative to release the carriage and permit free movement thereof by the operation of the release key and is operative to effect exaggeratedspacing at predelermincd poinls, as for instance the commaand decimal points, by the automatic operation of the several mechanisms herciniiel'ore described,

Attention is also direclcd to the fact that the spacing mechanism embraces two coacling units, to-wil, the scrics of trips and the trip arm, which are brought into engagement by the movement of the carriage and which are relatively variable to at tain different spacing conditions by the manipulation of a setting key.

it is thought from the foregoing, the coin struction and operation of my variable spacing mechanism will be fully understood, but while the illustrated en'ibodimcut f the in vention appears at this time to be preferable,

I reserve the right to effect such changes,

ot' points at which said spacing mechanism shall operate. I

2. The combination with a carriage and means for effecting a uniform step-bystep movement thereof, of spacing mechanism brought into action by the movement of the carriage to exaggerate the normal movement of the latter, said spacing mechanism including a plurality of devices relatively adjust able to determine the number of times thc spacing mechanism will operate during a sintraverse of the cz'irriage.

3. The combination with a carriage and means for effecting a normal uniform stepby-stcp movement thereof, of spacing mechanisminchuling a series of devices and a single device adapted to be broughtinto engagcment with the series of devices successively by the movement of the carriage to exaggerate the normal carriage movement at snccessivc points in the carriage travel, said devicesbeing relatively adjustable to different set positions to predetermine the number of points at which exaggerated spacing will be ell'ected. i

4. The combination with a carriage and means for ell'ccting a normal stepbystep movement thereof, of spacing mechanism cooperating with said means to exaggerate the normal movement of the carriage, said spacing nwchanism including two units relatively movable by the carriage into coactive relation, one unit including a series of devices and the other unit including a single device adapted to coacl successively with each of the devices first named and one of said units bcing adjustable to dili'erent set positions to determine the extent of coaction between the respective units.

6. The combiinition with a carriage and means for ci'l'ecting a normal stcp-by-siep movement thereof, of spacing meclninisln adapted to wopcratc with said means to ex- :lggcratc the normal carriage movement. said spacing mechanism including two units, one mounted on the carriage and the other rclaiivcly stationary, one unit including a sc'rii s of devices located at different points and the other unit including a single device, and means for iinlepcinlcntly adjusting a device of one unit into and out of ii'iterl'cring n-lvtion with a device of the other unit.

' 1 mechanism being whether or not said mechanism shall operate 6; In a'typewriting machine, the combination with a carriage, of anescapement controlling the normal step-by-step advance of said carriage, release mechanism arranged to operate theescapement to permit free movement of the carriage, and spacing mechanism independent'of the release mechanism and acting automatically at given'points in the movement of the carriage to exaggerate the 10 extent of the carriage movement by cooperation with the escapement, said spacing mechanism being variable to determine the number of points at which the carriage movement will be exaggerated in a single traverse of the machine by said carriage.

7. In a typewriting machine, the combination with a carriage, of an escapement controlling the normal step-by-step advance of said carriage, release mechanism arranged to operate the escapement to permit free movement of the carnage, and spacing mechanism independent of the release mechanism and acting automatically at given points in the movement of the carriage to exaggerate the extent of the carriage movement by cooperation with the cscapement, said spacing variable to "determine and also to determine the numberof times the carriagemovement will be exaggerated in a single traverse of the machine by the carriage.

8. In a typewriting machine, the combination with a carriage, of an escapement controlling the normal step-hy-step advance of said carriage, release mechanism arranged to Operate the escapement'to permit free movement oi thecarrlage, and spaclng mechanism independent of the release mechanism and 4 0 acting automatically at given points in the movement ofthe carriage to exaggerate the extent of the carriage movement by cooperation with the escapement, said s acing mech anism including a plurality of c evices and a single device adapted to coaet therewith, one

of said devices being adjustable into and out of operative position.- v

9. In a typewriting machine, the combina tion with a carriage, of an escapement controlling the normal stepby-step advance of said carriage, release mechanism arranged to operate the escapement to permit free movementof the carnage, and spacing mechanism independent of the release mechanism and acting automatically-at given points in the movement of the carriage to exaggerate the extent of the carriage movement by cooperation with the escap ement, said spacing mechanismincluding two units, one ofwhich is adjustableto determine whether or not the spacing mechanism shall be operative, and one of said funitszbeingadjustable to determine thejnumber of oints at which the 'carriage' movement "be" exaggerated in a riage.

single traverse of the machine by said car- 10. In a typewriting machine, the combination with a carriage, of an escapement controlling the normal step-by-step advance of said carriage, release mechanism arranged to V operate the escapement to-permit free movement of the carnage, and spacing mechanism independent of the release mechanism and acting automatically at given points in the movement of the carriage to exaggerate the extent of the carriage movement by cooperation with'the escapement, said spacing mechanism including two coacting units one of which is adjustable to operative or inoperative position and is also adjustable to different operative positions to determine. the number of points at which the carriage movement will be exaggerated in a single traverse of the machine by said carriage.

11. In a typewriting machine, the combination with a carriage, of an escapement controlling the normal step-by-step advance of said carriage, release mechanism arranged to operate the escapement to permit free movement of the carriage, and spacing mechanism independent of the release mechanism and acting automatically at given points in'the movement of the carriage to exaggerate the extent of the carriage movement by coopera w tion with the escapement, said spacing mechanism including .a plurality of trips anda trip arm adapted to coaet therewith and means for'moving the trip arm into and out of operative position and to either of several-- 0 erative positions, substantially as and for t e purpose specified.

12. In a typewriting machine, the combination with a carriage, of an escapement controlling the normal step-by-step advance of said carriage, release mechanism arranged to anism including a plurality of 'devices located in different planes and a coactin'g device adjustable to different set positions c'ori esponding to said planes. V

13. In a typewriting machine, the combi-- nation With a carriage, of an escapeme'nt controlling the normal step-by-step advance of said carriage,=releasemechanism arranged to operate the escapement to permit free movement-of the carr age, and spacing mechanism independent of therelease, mechanism and acting automatically at given points in the movementof' the carriage toexaggerate the "extent of the carriage movement by cooperation with theescapement, said spacing mechanism including a plurality of trips andila 5n ism coacting with said means and trip arm adjustable into interfering relation Wlth certain or all of the trips or with none of said trips, as desired.

14. In a typewriting machine, the cmbination with a carriage, of an escapement controlling the normal step-bystep advance of sald carriage, release mechanism arranged to operate the escapement to permit free niovement of the carriage, spacing mechanism in- 10 dependent of the release IIIGClltLl'llSHl and act ing automatically at given points in the movement of the carriage to exaggerate the extent of the carriage movement by cooperation with the escapemcnt, said pacing mechanism including two units adapted to be brought into engagement by the movement of the carriage, one of said units including a plurality of trips and the other unit including a member coacting with said trips, and

means for adjusting one of the units to different set positions to vary the number of trips engaged by the member during a traverse of the machine by the carriage.

' 15. In a typevvriting machine, the combination With a carriage and means for effecting the normal step-by-step advance of said carriage, of spacing mechanism automatically operated by the movement of the carriage to" exaggerate the normal carriage movement, said spacing mechanism including enacting devices, and setting means operative to vary the relation of said devices to determine whether or not the spacing mechanism shall operate and to vary the number of points at which the carriage movement will bc exa geratcd in a traverse of the machine b v said irriage.

It). in a lypcn'riting machine, the combination with a carriage and means for effect- 40 ing the normalstep-by-stepmovementthcrc of, of spacing mechanism automatically opcratcd by the movement of the carriage to exaggerate thc normal mo-vcmcnt thereof, said spacing mechanism including a plurality of devices and a single device successively cooperating \\'ith said'dcviccs, and a setting key opcrat ivc to vary the relation of the sevcral coactivc devices, to select or determine the number of said first named dcviccs with.

which the single devices ivill comet.

said spacing .meclninism including a pluralirv 1 of said trips, a trip arm, and means for sci l i lfi and al o in an inopcra! ivo posit ion.

18. In a typcvsritcr. lhc combination qii h the frame, carriage, and carriage lei-ding mcchanism, of spacing nicclianis'm courting with the fccdingmc hanism and brought into on the trip arm in dill'crcnt operative positions I action by the movement of the carriage to exaggerate the normal movement thereof, said spacing mechanism including a plurality of trips mounted on ihc frame, a trip arm mounted on the carriage, and a setting key arranged to move the trip arm into and out of operative position and also the different operative positions to vary the number of tripse gagcd by said arm.

19. In a combined typcn'riting and adding machine, the combination with a typewriter inclu ling a carriage. an cscapcmcnt controlling the normal stcp-lrv-stcp n'iovcmcnt thereof, and printing mechanism including keys, arranged to operate the cscapcn'icnt, of an adding mechanism including a register, actuating mechanism therefor, and spacing mechanism autonnitically operated by the movement of the carriage and mounted in part on the register, said spacing mechanism being variable to detcrminc the number of points at which said spacing mecln'mism will operate as the carriage is traversing the width of the adding field 20. In a combined. typcwriting and adding machine, the combination with a typewriter including a carriage, an o 'npeniciit controlling the normal stcp-by-stcp nnwcment thereof, and printing mechanism including keys arranged toopcrate the csaipement, of an adding mechanism including a register, and ai'ituating means therefor having its denominational relation controlled by the movement. of the typewriter carriage, and automatic spacing mechanism coacting with the escapcment to exaggerate the carriage movcnu-nt for the purpose of causing the latter to' skip over comma and decimal spaces, said spacing mechanism being variable to determine the number of points over which the carriage will be automatically spaced by the spacing mechanism during a given traverse of thc adding field.

21. in a combined t ypcwriting and adding machine, the combination with a typewriter including a carriagc, an cscapement controlling the normal stcp-bystcp advance thereof, and printing mechanism including keys arranged io operate the cscapemcnt, of an adding mechanism including a register and actuating mechanism thcrcfor having their dcnominalional relation controlled by the movcmcnt of thc typmvritcr carriage, and automatic spacing mechanism brought into action l the movement of the typewriter carriagc and coacting with the escapcment' to space the carriage over a plurality of oint ilhin 1hr adding held, as for instance thc decimal and comma points, said spacing Incclmnisin being variable to determine lvrhclhcr or no? it vvill operate to automatically space the carriage during a traverse. of

thc adding licld and also to dctcrn'iinc the number of pomtsatn'lnch it willopcralodurmg such traverse.

22. In a combined typewriting and adding machine, the combination with a typewriter including a carriage, an escapement controlling the normal step-by-step advance thereof, andprinting mechanism including keys arranged to operate the escapement, of an adding mechanism including a register and actuating mechanism therefor having their denominational relation controlled by during such traverse, and a, setting key for varying the spacing mechanismr 23. The combination with a carriage and a means for effecting anniform step-by-step movement thereof, of variable automatic spacing mechanism operative to cause exaggerated movement of the carriage at a number. of predetermined points' in its travel, said spacing mechanism including a setting key movable to different positions to vary the points at which the exaggerated spacing will occur.

24. The combination with a carriage and means for effecting a uniform step-by-step movement thereof, of automatic spacin mechanism operative to cause exaggerated movement of the carriage'at a number of predetermined points in its travel, said spacing mechanism including a setting key and means variable by said setting key to select or determine the point "or points in the carriage travel at which exaggerated movement of said carriage willbe efi'ected.

In testimony whereof I afiix my signature in presence of two witnesses.

' WILLIAM L. DENCH.

Witnesses:

W; M. CARTMELL, ETHEL FLINN.

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