US1232739A - Computing-machine. - Google Patents

Description

C. WALES.

COMPUTING MACHINE. APPLICATION msn nE'c.22. |914.

Patemeamy 110, 1917.

5 SHEETS-SHEET l C. WALES.

COMPUTING MACHINE. APPLICATION FILED DEc.22. 19|4.

Patented July 10, 1917.

5 SHEETS-SHEET 2 "Sfr C. WALES.

' coMPunNG MACHINE.

APPLICATION FILE) DEC. 22| 1914. Patented July 10, 1917.

5 SHEETS-SHEET 3.

'I M1 ou. o0C00- nuf- IIIIIIMI-ll l .mmm-m r Hill".-

ll--lllllll ll c. WALES.

'COMPUTING MACH|NE. APPLICAUON FILED DEC. 22| |914.

nun" Q OCOOOO N nog vwo@ ggg a'lobnega C.WALES,

COMPUTING MACHINE.

Awucmnn min umn. 19u.

Patented Junio; 1917.

'SSHEETS-SHEETE.. A

also cheapen the cost.

CHARLES WALES, OF NEV HAVEN, CGNNECZICUT, ASSIGNOR T0 TE i- M 'QIIINFJ COMPANY, OF NEVI' HAVEN, CONECTCUT, A CORPORATN OF CON- NECTICUT.

COMPUTING-MACHINE.

Specification of Letters Patent.

Patented July it), i917.

To @ZZ whom i may concern.'

Be it known that l, CHARLES VVALns, a citizen of the United States, residing at New Haven, New Haven county, State of Connecticut, have invented certain new and useful improvements in Computingdvlachines, of which the following is a full, clear, and exact description.

My invention relates to improvements in computing machines and. has for its object to provide a computing machine that encompasses many desired features in a machine of this character by the use of novel constructions and the fewest possible number of parts.

material is avoided. The simplicity of the parts and the possibility of their being manufactured out of easily obtained material, such as sheet steel, by use of tools of the character of punches and diesand the avoiding of bending parts after being punched, all tend to add durability and accuracy without lowering the grade of manufacture, The entire absence of castings from the interior mechanism o f the machine is a very strong feature for the reason that castings are expensive to make, hard to machine and inaccurate when machined in large numbers.

lThe following is a description of an embodiment of my invention, reference being had to the accompanying drawings in Figure l shows a section of the machine on a plane just inside the right hand frames of the machineand keyboard.

Fig. 2 shows a section' of the machine on a plane adjacent to the left hand frames of -the machine, and certain other operative arts. p Fig. 3 shows a plan view of the numeral wheels and accumulating mechanism.

Fig. 4 shows a front elevation of the initial stops and sliding members on the rack j bar carriers.

Fig. 5 shows a longitudinal. section of a y portion ofthe keyboard and a portion of the main frame of the machine, with parts for securing the early release of the numeral keys. A

Fig. 6 shows a front view of the same parts on the line of the transverse break of Fig. 5.

Fig. 7 shows in full lines in side elevation By combining many ofiices in aA single part much construction and waste ofmachine and 2 is the cover' .which is secured y to the base 1 by the hook 3 which engages witha stud 4 which is placed on the lower part of the cover. Panels of glass 5 and 6 are introduced in the front and sides of the i machine and also in the top above the numeral wheels. The main frames 7 of the machine are secured to the base bya hinged connection, andin turn support the keyboard. Various transverse parts of the machine are held in their proper positions between side frames, (and this applies both to the main machine and the keyboard) in holes through which they project, and in some instances turn, much in the same manner as the works of a clock, it being possible to release and spring these frames so as to remove one part leaving others securely held in their original position. The key-board consists of as many rows of numeral keys 10 as are desired, arranged side by side, each row consisting of nilie keys placed at proper intervals and numbered from one to nine, the one key being nearest the operator and the nine key farthest away.A These keys are retracted to normal position by springs surrounding their lower ends. Near the upper end of each of the keyslO, which are made to move in a perpendicular direction and stand in slots 11 in the key-board top 12, is a stud'13 (Figs. 1 and 6) which projects to the right into a recess in a pivotally mounted flexible shutter 14 and so arranged that when any key of its series is depressed the stud 13 passes below the lower edge of the flexible shutter so as to be engaged therein locking it in depressed position. 15Y connected to tl'ie cross-bar 16 hold. the shutters in engaging position. lOne of the keys is shown in depressed position in Fig: 6. The lower ends of the keys are encircled Springsl by spiral springs 17 which return them to fpierced with a hole which surrounds the bent end of an index wire 21, which moves los - indexing slide 26 and prevents motionv chine.

each one being beneath the other at givendistances, their rear ends thrusting against an initial stop member 24 which has a ,shoulder 2 5, which under the action of.

the spring 24" normally 'lies beneath an of the rack-bar carrierl 27 of the ma- Should any index wire 21 be thrust rearward it removes the corresponding initial stop 24 out of the path of the slide 26 and leaves the forward end of the rack-bar carrier 27 free to descend and stop upon such rearwardly moved index wire under the action vof springs 27.y The rack-bar carrier 27 consists of a member loosely ournaled onthe central shaft 28 having three arms, one of which bears the slide 26 and is controlled by the index wires 21, another of which carries a vertically moving rack 29 and the third' of which is connected through a link 30 with the type-bar 31 t which carries the moyable typel32. The in'- 'dexing slide 26 provides a movable face for the first arm which is normally heldin forward position by aspring 33. The purpose of this movable face is to permit the operator to set up anewv item before a former item has been recorded and printed. Thus, should one' of the index wires 21 be thrust rearward before a previous item has been recorded, it would come in contact with the indexing slide 26 of the rack-bar carv rier, pushing it backward and carrying with it the .corresponding initial stop 24. When the rack-bar carriers are thereafter v restored to their normal positions the actuated index wire remains thrust rearward.

The ,carriers are restored by the universal bar 272'carried by the 'cani plates 50, v50', which are at oppositesides of the machine and iirmlyfixed to the shaft 28. When the curved face of'the indexing slide 26 passes by-the end' of the actuated index wire, the indexing slide moves back into its "jnormal position and upon the succeeding movement of the rack-bar is stopped by the actuated index wire in the desired position for the new itemto be added and printed. Each nine key 10 in the keyboard has but one oiice to perform, namely, it removes from the path of the rack-bar carrier 27 and its indexing slide 26 the initial stop 24, and

the front end of the rack-bar carrier will continue its downward progress until 1t Lese-,vae

reaches the bottom of the plate 22 in which the .rear ends of the index wires 21 are held, the bottom edge of the plate 22 being bent atv an angle of-ninety degrees to limit its movement and 'constituting a limiting stop 22. This key 10 acts upon a cam surface 34 on the initial stop 24. The 'rack-bar carriers 27 are strung side by side Von the main shaft 28 of the machine and the middle or upwardly extending arm is provided with two ears 35 at thetop, which are bent into a position parallel withv the main shaft and are provided with milled slots. Sliding in these slots and having" perpendicular motion-is the rack-bar 29. provided with a section of teeth cut in its upper end, whose pitch line is concentric with the main shaft 28 when the rack 29 is in its elevated position and isin mesh with the corresponding numeral wheel pinion .36. The lower end of the rack-bar is provided with a lslot 37 which surrounds a section ofthe hub 38 which carries the rack-bar carrier. This slot is of sufficientv longitudinaly length to permit the rack-bar to drop out of mesh with the pinion 36 and, when the rack-bar` moves, to pass' freely beneath vthe teeth of the pinion and not touch them, there being a seriesof pinions36 constituting accumulating gears, and corresponding series of rack-bars 29 and carriers 27. For the purpose of elevating and lowering the rackbars 29, their lower ends are each provided with a hook-shaped member 39, the inclosed space in which hook is in the nature of a curved slot 40 and concentric with the main shaft 28 of the machine when its rack-bar is in an elevated position. To give the rackbars their proper `motion a roller 41 (Figs. 1 and 2) is provided lwhich rolls in the slot `at the lower end of the rack-bar, which roller is just about the' size of the width'of the slot, allowing but ac little freedom of motion. It will be seen by this arrangement that no matter which one of the nine positions' assumed by a rack-bar carrier, the roller when ra1sed`w1ll raise its rack-bar and when the rack-bar carrier and rack-bar rotate, furnish a rolling bearing for the rack-A bar. A series ofrollers one for each rackbar are strung upon ashaft 42 common to them all, which is thrust through the ends of va series of arms 43 centered on al shaft 44 at a point backof the main shaft and allowing-the arms 43 to assume a horizontal position and soarranged that when the shaft 44 on which they are centered rotates they all riseat once and lift the rack-bars with them. At the left hand end of the shaft direction and having at its lower end a roller 46. Centered on a large shaft 47 in the rear of the machine, which shaft is in a position horizontal .with the last named roller and some distance behind it, is a loosely mounted secondary cam-plate or cam 48, having at its forward end a cam-slot 49 which surrounds the roller 46 on the end of the vertical arm 45 described above. The cam-slot 49 in the cam-plate 48 is of a width slightly larger than the roller 46 it incloses,

. and is formed having twosurfaces concentric with the center on which the camplate revolves so as to form two dwells, the difference between these two surfaces being suicient, when the cam-plate 48 operates, to cause the roller 46 to move in a'circular path concentric with the shaft 44 on which thearm 45 is hung and to move a suiiicient distance'to turn said shaft and its various arms 43 and rollers 41 a suflicient distance to elevate the rack- 'bars 29 and cause them to come into mesh ous cams and inclined planes for operating different parts of the machine. At the lower part of the main cam plate 50 is a stud 51 to' which is connected a link 51a whose other end is connected tothe' lever 51b securely fixed tothe shaft 47. A stud 51 on the cana plate 50 carries one end of a.- slotted link 52 which extends horizontally in a rearward direction and is vperforad to inclose a stud 53 in the upper part of :the cam 48 controlling the rack-bars, the

slotted end delaying the action of the cam 48 .and permitting it to rest after being pushed into a position placing the rackbars 29 and the numeral wheel pinions 36 in mesh, and leaving it in -that position until the machine has nearly returned to the normal position shown in the drawing. It

is essential vto hold this camv 48 in suchv a position until the other parts of the machine have nearly comeJ to rest on the return stroke of the main handle, since the cam above described, being drawn by spring toward the front of the machine would naturally follow the motions of the machine back intoplace-were it not controlled. 1 To i hold it in nearly the position it takes in the forward stroke of the handle of the machine until the back stroke is almost nished is a pawl 54, retracted by a spring 54 and centered on a center 55, and provided with a flat face or tooth 56 which drops into the path of a pin 57-set in the cam 48. The pawl 54 has an upwardly extending arm 58 lying at rightangles to the slotted link` Mounted on the mainy 58, carried by the stud 51 and riding at its other end on 'the link 52, is provided with a pin 5), which as the machine assumes the normal position shown in the drawings, strikes the upwardly extending arm 58 a lateral blow lifting its tooth 56 from in front of the stud 57 in the cam and releasing the cam 48 to the action of the spring 60 which turns it in an anti-clockwise direction. This system oi .controlv enables the rack-bars, when rotated clockwise by the universal bar, to turn the numeral wheels in an anti-clockwise direction and' then drop out of mesh coincident with the return of parts of the machine to the normal position shown in the drawing.

lt is necessary to protect an adding machine from a violent pulling of the handle which operates it or else the machine could be caused to move too fast for its various parts to perform their functions. ATo protect the machine from possible injury flexible spring connection exists between the motive shaft 61 and the transmission shaft 47, so arranged that when the motive shaft 61 is violently moved the transmission shaft 47 will be drawn after it by springs at a slower rate. To control the action of the shaft 47 an ordinary dash-pot 62 (Fig. 2) is connected to a rearwardly extending arm 63 and so arranged that the oil in the dash-pot through its action on the piston will give the shaft 47 a uniform slow speed of operation. Mounted on the shaft 47 and lrmly attached thereto are a pair of arms 64 (Fig. l) having at ,their lower ends a rod 65 to which are attached a number of springs 66. @n the shaft 61 are iixedly mounted similar arms 67 carrying a rod 68 for the reception of the springs 66 above mentioned. It will be seen that `if the, shaft 61 is rotated and the shaft 47 p is held from rotation the springs 66 will be stretched and will continue so stretched until the parts onv the shaft 47 controlled by the dash-pot follow at a slower speed under such. control. It isnecessary to limit the motion of the arms 64 on the shaft 47 in their motion after power has been transmitted through the springs 66, g. and'for this purpose there isprovided a connecting rod 69 extending from the rod 68 mounted on the shaft 6'1 to the lower end of a lever 70 hanging loosely upon the shaft 47 which connecting rod in turn comes in 1 contactv with the rod 65 mounted on the arms on the shaft 47 and maintains a distance between the rods to which the springs 66 are attached which cannot be less than fthe length-of the rod 69. The shaft 61 is retracted to normal position by springs 66.

The rearwardly extending arm of the rack-bar mentioned above is connected to and operates portions vof -the printing sectionjwhich are not a part inbody of this application and are described in my application No. 829,197, iled April 3, 1914.

In the top of the machine beneath the glass window 6 in the case and having two sets of numbers, naught to nine, uponI their periphery are the numeral wheels 71, each of which has mounted on it a pinion 36 having twenty teeth, one. foreach numeral wheel number and a double-ended carrying pawl cam 72 (Figs. 2 and 3) having on each end a face 73 lying in a` plane passing through the center of the numeral wheel and an inclined faceV 74, said faces so shaped that' ifthe numeral wheel is revolved in a clockwise 4direction the face 73 of the double-ended pawl will catch on andstop against any interposed object and if revolved in an anticlockwise direction ythe face 74 will give a l' cammng motion to any interposed object.

This larrangement is for the purpose of allowingv the `double-ended pawl cam 72 on the numeral wheel to operate certain carrying vdevices hereafter described while travellng in an anti-clockwise direction and also to retain the numeral wheels from more than half of a revolutionv in a clockwise direction. 4The numerals on the periphery ofthe v numeral wheels are disposed i'n such a way that, when the double-'ended pawl is in contact with a hereinafter mentioned part of the carrying device, a zero is placed at the peep hole 75v provided above the numeral wheel.

` The numeral wheels are contained in a housing consisting of two angle bars 76 (Fig. 3)

which surround and are mortise'd' to flat pieces 77 having atl their ends holes. through.-

which is thrust a shaft 7 8 common to all the v v numeral vwheels and forming stalls for the numeral wheels. Mounted on a shaft' 79 at the lower corners of the stalls and almost in the angle of the lower angle bar are a set of carrying pawls 80, leach one having an upright` member carrying a forward cam-like projection which stands in the vplane ofthe rotation of one of the double-ended pawls 72 on the numeral wheel and so arranged that when one end of the pawl 72 passes, it will force the carrying p'awl 8 0 in a rearward direction. At the upper end of the carrying pawl is a small-stud 81 extending laterally and carrying at its outward end a bolt 82 which extends between the at pieces 77 and the numeral wheels and has its` front end surrounded by a slot in an angle iron 83 extendin across the machine, The front end of the` bolt 82, when in its forward position,

extends beneath a hooked end 84 on the carrying lever 85 and retains the-carrying lever'which is journaled in the shaft 78,

. carrying the numeral wheels, in an elevated position. It will be seen that if the bolt 82 is withdrawn the carrying lever, pulled by the spring'86, will rotate on the numeral `6`5jwheel shaft until it falls upon a rod 87 extendngclear across the machine and havmaar@ ing rollers 87 resting upon annular lfaces 88 of the main cam 50, which motion is approximately eighteen degrees or one-twentieth of a circle. 'Mounted upon the carrying lever 85 at a point'ahout half-way its length is a combined lock and carrying pawl 89 consisting of a piece of metal the shape of a bell-crank. Its upper end is provided with a nose 90 which has the'form of the interior part of a pinion tooth. Its horizon- ,tal member is connected to and operated'by started to move out of mesh, thereby locking the numeral wheel at all times. The same thing holds good in reverse order, when shaft 42 is traveling down. Attention is called to the unequal length of the arms of the carrying-pawl 89. This pawl isbellcrank in shape and the arm connected with link 91 is shorter than the upper arm which has the locln'ng-nose. 90 upon it. This produces theelfect of moving the upper end faster than the end connected with the link 91. As the upward movement of the link' 91 is practically coacting with the movementOfrack-bar 29, the quick retreat of the nose is thus providedfor. It will be seen by this arrangementthat if the rack-bars of 'the machine .are elevated and lowered as above describedthe carryinghooks 90 on the carrying-lever willbe thrown into and out vof mesh with the pinions on phenumeral ioo wheels accordinghasthe carrying-lever is'in lits elevated ornloweredfpositlon. The upwardly vextending arm offeach carrying-lever 85 is provided at'its forward side with a hook 92, (Figs. 1 and 3) the plane of which hook is `slightly above the hook 84 on the opposite side of the upwardly extending member described' above. This hook 92 is -so arranged that it will stand above a rail 93, which operates on centers 93 in ,the main side. frames o f the machine when the hook 84 isin engagement with the bolt 82.

This rail 93, when tipped back and under the hook 92, holds the carrying-lever 85 from motion after the boltsV 82 have been withdrawn from the hooks 84. It will be seen by the arrangement of these two hooks 84 and 92, one above the'other, that if the rail 93 is in position beneath the front hook 92,

- with Vthe back hook 84 'resting upon the end of the bolt 82, that if the bolt 82 is withdrawn the carrying lever 85 will move downward very slightly, but only a suiicent disneearse tance to keep the bolt 82 from returning and getting under the inner hook`84. At the end of the operation of adding, the rail 98 is thrown out from under the front hook 92- of the unbolted carrying lever 85, allowing it to descend and carry with it in rotation its pawl 90 and the correspondingnumeral wheel. The carrying levers 85 have to be restored at the end of each addition to their normal positions and for this purpose the rod 87 described above, upon which they fall is provided with rollers 87 at each end and with arms 94 at each end which are cen-- Aits rollers 87 to mount up to a higher planeA carrying with it the depressed carrying-levers 85 so as to restore them to bolted position. To be sure that the.'carryinglevers are fully hooked up, on the'bolts 82l the'camfaces 95 on themain cam 50 of the machine are of sufficient height to slightly over-cockV the carrying-levers so that the bolts82 will be sure to assume` their normal position beneathvthe hooks 84; The bolts 82 are cony trolled by suitable springs 96 to give them the forward motion necessary. If a bolt 82 and its carrying `pawl 8 0 are connected-tolgether Without the medium of a slot, it vwill f beseen that on turningthe numeral wheels to zero and allowing the double-ended pawls on the-numeral wheels to stand upon the carrying pawls 80 the carrying lever 85 in its upward motion and while latchingwith and'would carry the corresponding carryingble-ended' pawl onA the'num'eral wheel and the machine, which is connected by a long link 98 to the cam 48 on the shaft 47 which, by means described above, controls the action of the rack-bars in their upward and downward movements. rlfhe lower end of this link 98 has a stud 99 (Fig. l) which extends' into a slot 100, open atone end and concentric withthevcenter of the shaft'47. This slot 100 is of such length and shape that just as the cam 48 in which it is cut is coming tolrest the stud 99 in the end of theslot 10G-is thrust'upward against the action of a suitable spring 101, and in turn forces the rail 93 out from under the carrying levers 85 allowing them to drop and turn the numeral wheels. The interval occupied by the cam 48 on the shaft 47 in mov.- ing its entire distance is long enough to let the rack-bars 29 descend from mesh with the pinions on the numeral wheels and the carrying hook -90 on the carrying lever 85 to fully enter the teeth of the pinions 36 on the numeral wheels before the rail 98 is forced out from under the hooks 92 of the carrying levers. lt will bel seen that the fall of the carrying levers 85 will be de- 'layed for a time aftervthe other parts of the machine haveA gone to rest.

' In the'proces's .of adding it is' necessary at intervals to take what 'is known as a @sub-total, technically meaning printing what numbers are exposed upon the numeral wheels upon the strip ofl paper in the machine,- and thencausing the wheels to return to theirv former lpositions so that addition can be uninterruptedlycontinuedf- In taking a total it is desirable that the numeral wheels be returned to zero position and left I there .while .the parts of the adding machine Vitsv bolt 82 would cam the bolt 82backward I allowing fthe numeral wheel to turn farther i back in a clockwise direction than Zero. The bolt 82 where it engages the stud 81 ofthe pawl 80'is, therefore, slotted, one side being partially cut away to allow for easy assembling.

The rail 93, which retains the carryinglevers in their -elevated position, to make the carrying operation successfulmust lbe removed from beneath the hooks 92 on the forward side of the upwardly eirtending arm on the carrying lever and allow them to drop, should the rail be tipped forward at the end of the motion of the whole adding mechanism. It would not be a fault if this action was delayed-beyond the termination of the return movement of the rack-bars 29 so as to give the numeral wheels time to lose their inertia and come-to rest, and to provide this, the rail 93 above referred to has an arm 97 extending backward and into are restored to their normal positionindependentlyof the numeral wheels. It is also desirable that these two operations sub-totaling and totaling should be brought about by the use of separate keys on thev keyboard. YIt has been customary for the purpose of performing these two functions to provide separate internalmeans for each operation. l combine the means for performing these operations in one 'construction with'the exception that two levers are 115 provided extending from the key-board to vthe machine proper, both of which levers operate upon armechanismrcommon to them both, thefon'ly diiference in their operation being the distance which they and the keys attached tov them move Centered in the 'side frames ofthe key-board section of the- Lmachine are the total .lever 102 and subtotal lever 103, (Fig. 2) whose. forward ends are depressed by keys 102 and 103 in the 125 .left hand Aside of the key-board. Their inner ends lie beneath a stud 104 in what is known as the totaling arm 105 and are so fulcrumed as to respectively give this stud 104 and its arm 105 two distinct movements. 130

- of the left side frame of Thus upon depressing' .the total key 102 the totaling arm 105 israised to a nearly horizontal position. Upon depressing the subtotal key 103 itis raised to a point somewhat lower. vIf vthe operator should fail to fully depress either of these keys and pull the handle he would set up serious dificulty in. the operation of the machine by such failure. '12o make it impossible for .this to occur, I provide an L. shaped piece 106 which is centered at 107 inthe lower part the machine. The upwardly extending arm of this member has three notches 108, 109, 110 with which the forward end of total-arm 105 engages.

The member also has a forwardly*l extending arm 111 lprovided with a hook 112 which engages with and prevents the motion of a plate 113 ha g a sharp corner lying'in. the path of this hook, which plate 1s iiXed to the shaft 61. The action of thisv -plate 113,` havinga surface concentric with when a sub-total is taken, 133 mounted on the left hand side 'frame of the shaftl6 1=is such that whenv it" tips forward under'A the end of the hook-`112, the

hook and its upwardly extendin l arm are prevented from motion, and as t e` end ofl the totaling arm-105 is in one of the notches in its edge it cannot escapewhile the shaft totaling arm 105is not in one of thenotches but is opposite one of the higher surfaces). upward arm theshat '61 is locked.

from motion.

of the initial 'stops In order. to retract the I provide a lever the keyboard.'` (Fig. 2), the vlower end of wh1ch' liesx in front of a universal bar 135 .(Figs.2 5 and 6) carried by arms mounted on the shaft 127 and held in forward positionby springs 24, acting through the initial per end ofthe lever 133 is cam-shaped and'j pivoted. at 11T -lower end a slot 118i for a stud 119 carried by the cam 48. pivoted thereto'at 121, whose lower end under-action of spring 116` engages thel stud stops to which they are connected.v The upis engaged by a pin 136 carried byi the subtotal lever 103. When the sub-total lever isv actuated, thepin 136 actuates the lever1133' so as tov cause vit to move the universal bar 135 to the rearward, carrying'with itall of the initial stops 25, soas to beout of the way vlower end of which isv pivoteda engaging the universal ba`r135. and retracted f est of the carriers.. In order lto retract the 4provide a c 2),- to the -tial stops when a total is taken, I somewhat similarV lever 137 (Fig. `hook 138 by the spring 134. This lever `137`is. actuated by a stud 139'lonjf. th e f total lever. 102,;jsovthat f when the total-flever`102is actuated-the" 138 'draws the- `liversal-` barbckward to retract Vthe initial-stops'in .a nia-nner 60 lar to their retractidn'when'fthesu toy path in itsl orwar ib'ar carrier 27. This is a safety guard so .that if thel total-key be unduly held at its depressedpesition the rack-bar carriers and rack-hars. will return toinitial position Inv order to print item for subsequent elimination, which item shouid'not be added to the. items already set up, I provide an elimination key 141.v Fig. 2) which acts upon a .lever142. When this key is actuated, the lever 142 engages the latch 54 so as to with- 'draw it from the path. ci the stud 57 with` the result that item 'set'by the keys will be setl up in the type'32", lso as to he printed without being added to. theitems previously set upr j To make it4 impossible to confuse the operation vof the vtotal and sub-total keys by attempt'mgto perform the; function oif one with the. other; two:.studs are set, one stud 1114 upper arm of' the hook and the other stud 115 in theen'd. ot' the total lever l 5102 `15T-i 2n/seaman e that the im in e 61 is moving. Likewise if the end of the nr gpo (-,mthep g y p g and wirilein such posiy1o 11 prevent the notch normally occupied by taling arm 105, and also keep` the hook 112 :1nengagement with the vpoint of the plate To cause the numeral wheels to return to zeroby turning in a direction opposite to.- thatI employed in ordinary addition it is necessary to reverse the action of the whole adding machine in so far as its relationship tothe numeral wheels is concerned. To

. bring about the total arm 105 is provided a downward extending link 116 (Fig. 2) and having at its .This arm carriesa hook 120 119 onfthe cam 48 on the shaft 47 which cam .controls the: elevating and lowering ,of the ,rackbars,"`thu s bringing them into and out ofv engagement with the numeral wheel pinions. When Athe total key 102 and in turn ,brings the rack-bars 29I into mesh with `the- -piriions' of the numeral4 wheels.

The operthenjpulling thehandle under these d tionsfcansesthe; numeral wheelsto. re-

can

y be standing at,jto zero -which tlf " ee rack-bars for total printing.

accomplished' Iwhile the' handle of the ladding machine is movingforward toward 'As soon, however, as it starts j the operator.

b akward, afdirection :away from the oprunbackw'ard from whatever numi Lacasse @17,

erator it is necessary to withdraw the rackbars 29 from the numeral Wheel pinions 36 leaving the numeral wheels stationary while the machiney is returning to its normal position,ot`herwise vthe numeral wheels would roerate for the reason that the hook 120 (Fig.

2) is andremains hooked on the stud 119 on the cam 48. To release the -cam 48 from the hold of this hook 120 the latch 58, above referred to is provided with a'notch 123.v

This trip latch notch 123, as the handle of the machine is about to start backward, engages with a stud 124 on the hook 120 and forces it to letgo of the stud 119 on the cam 48 letting the cam 48 drop under the action of vthe spring 60,- which carries the rack-bars downward and out of mesh with the pinions on the numeral" wheels.

In takingY a sub-total the depression of lthesub-total key 1.03 lifts the total arm 105 (Fig. 2) toa position where its end engages with the notch 109. on the upward arm of the hook 106 and' in so'doing does not lift the arm 116 which is attached to the total arm 105 high enough to .cause the stud 122 Y vto release the pawl 54 from the pin 57 or touching it.

bring the stud 124 into the path of the notch v128, said notch passing over the top of the stud 124 onfthe hook 120 without By this'operation it will be Y seen that the action of the cam 48l is stopped in `taking a sub-total and the rack-bars and the pinions on the numeral wheels remain in mesh andwhen the parts of the machine come to rest the numeral wheels are turned and restored to the positions they formerly occupied, leaving the addition to be continued as long as desired.

It has been customary to inclose the whole structure of an adding machine in side frames of cast iron-or other material which key-board section and the motiveprtion of l the machine itself are each` contained in I making it possible toremove these two sec' separate side frames made of sheet. metal,

tions, one from the other for convenience in assembling and repairing. To make this possible the side frames of the .key-board' are provided with inwardly projecting studs 125 that are made to set in vertical notches 126 in the top and near the front of the frames.

main side frames 7 of the motive portion of the machine. The lower rear corners of the side frames of the key-boardv are provided with a pair of hollow studs 127 made to swing into laterally extending slots 128 near the base'of the front edge of the main side frames 7. 1t will be seen by this arrangement that the key-board can be raised as is thelid of a desk turning on the two studs 125 and it will valso be seen that when it is dropped into its normal position it' cannot be unhooked or disjointed from the main portion of the machine without being rst raised so as to disengage the lower studs 127 from their slots 128. Then when so tipped by slightly lifting the key-board it will come free' of the main portion of the machine. `VVhen the case 2 is in position, the key-board is prevented from tipping and is,

therefore, firmly held in position. All the assembly man further access to all parts.

Other machines have beenprovided with trap doors in their bottoms which can be taken off if necessary. To make all parts of the machine including the bottom in' stantly accessible to hands I provide a connection between the main side frames 7 and the base 1 which permits the use of hinged joints in the front cornersy of the side On the base casting 1 of the machine are four lugs, 129, 130 the two forward ones 129 provided with screws 131eX- tending through them and into the forward corners of the side frame. The rearward lugsl 130 are provided .with holes through across the machine and slightly beyond the vfaces ofthe side frame which rod is 'held from motion.laterally when the case is in Upon withdrawing' place on the machine. the rod 132, the motive portion of the machine can be :tipped -forward as shown in dots in Fig. 5, thus exposing the back of the machine in a horizontal position and the L bottom of the motive portion in a vertical position, this being a great convenience.

By myl arrangement of centers and levers and members constituting various links and springs which-are .a medium of connection ,between the arms carried on the shafts 61 and 47 of the machine the shaft 47 can.l travel in an angle of approximately ninety degrees without straining any parts of the motive part .of the-machine or disarranging any of its mechanism. It is also possible with the, key-board attached to the rest of the machine to tip the whole machine forward about twenty degrees Without removing the keyboard which makes room enough for the operators hands to be placed in the space at Ithe lback of the machine soy created for the purpose of adjustment and repair.-

Assuming that the machine, asvshown in the drawings, isl cleared so that the numeral wheels stand at zero, the operation is as follows: The keys lO are rst actuated. so as to position the stops 21-in the various series'` to correspond to the numberwhich wise direction-and the universal bar 222 loe`- ing lowered permits the carriers'27 corresponding to the initial` stops 25 which may have been retracted to rotate counter-clockwise under the influenceY of their springs 27 until their movement is arrested by a stop 2l. This positions the rack-bars 29 so that their positions correspond tothe several numbers's'et up on the keys 10. d/)uring' the latter part of the movement of the camplate 50, the pin 5l', reaching the end of .the slot in the link 52 which is connected tothecam 48, .causes that cam 48. to .rotate clockwise until'the latch 54 falls beneath the projection 57, upon the cam 48. During this movement of the ca m 48, the slot 49 acting upon the lever 45 causes the levers 43 to rise and lift the rack-bars 29 and to mesh with the .teeth of the gear .36. I-t'also, acting' through the link 91, retracts'the nose 90 of the alinin and carryin'g-pawl so as to withdraw it from the teeth upon the gear 3.6. The vertical elongation of `the slots in the lower .end of the links 91, through which the shaft 42 extends, permits the rack-bars 29 to. begin their engagement with the gear 'teethbefore the pawls 90 arejwithdrawn therefrom. Upon the return movement of vthe' shaft 61 Vunder the influence of the spring 66', theram plates 50 and 59 are moved in a clockwise direction which results in a clockwise movementA of the-rack-bar carriers 27 while the rack` bars 29 are still in engagement with the -teethof the gears 36.

" This-moves the gears 36 counter-clockwise to an' amount correspondingto whichever key j 6'5 10 of its *series was depressed. lJust prlr to the vend :of the clockwise .movement .a position t that carrying-lever.

of the cam- plates 50 and 50 the pin 59 en,-Y gages the upright arm 58 of the latch 54,

withdrawing-it from theprojection 57, so as to' permit the cam 48 to move counter-clockwise under the Ainfluence* of its spring'60,

which movement'causes the cam-slot 49 to.

move the levers 43 so as tolower the rackbars 29 andwithdraw them the teeth of the gears 36 'and simultaneously causes the link 91 to move the :pawl 99 so that its tooth enters `between teeth `upon said gear.

In this way, the numeral wheels arev moved a distance corresponding .to the numbers set drawn from beneath the projection 84 of the carrying-lever 85 to the left. This permits.

the carrying-lever to fall until the nose 92v rests upon the upper edge 4of the retaining plate 93, the rojection 84 being then in such hat the bolt 82 cannot again move forward beneath it. kThis carryinglever carries a pawl 90, which is in engagement with the teeth of the gear 36, which is to the left Vof the gear to which is connected the cam 72, which withdraws vthebolt. of After all the other parts of the machine except the cam 48 have come to rest and just before the cam 48 comes to rest vafter being released by the latch 54, the end of the slot causes the pin 99` with its 'link98 to inove so as to cause the retaining plate 93 to move upon. its center 93', with the result that the upper edge of the plate 93 moves forward so a'sto be withdrawn from beneath the projections les 92; .This permits the carrying-levers, 'supi ported by the plate .93, to be drawn down.- -wardby springs 86 until they rest against the shaft 87. At this time the pawlsj390of these carrying-levers are in 'engagement -with their gears' 36 and being carried by the gears 36- through an arc of about 18l or one-twentieth s' carrying-levers '85, `move their,

of a revolution, thereby carrying fromv one numeral wheel to the next. Thecarryinglevers are restored to their normal positions, -I so that the bolts 82 can'come beneath their.

projections 84," bythe universal bar 87, which is lifted upwardly' by the inclined Acam surface 95 of the main cam duringthe Vperiod in which the rack-bar carriers are being positioned. vTherearwardarm of the carrier 27 acts through" the link 30 to position the type-bars 32 properly relatively to if 130! 4the platen (not shown), whereupon they are hit by suitable hammers, the mechanism for operating which does not form a part 'of the present invention. 4 I

The operation which takes place in printing totals and sub-totals has been` fully de,

member 144 engages when the shaft 61 is at` the end of its forward throw. The lever is engaged by a pawl 145 pivoted to the side frame at 146. 147. is a hammer mounted on the shaft 28 which, on the clockwise movement of the cam-plate 50, is cocked by the stud 148 carried by the cam 50.r 149 is a trigger which engages the hammer and holds it cocked. 150 is a pin that releases the trigger 149 when the cam-plate rotates counter-clockwise. The hammer, when released, is thrown by the spring 151. The action is as follows: If the shaft 61 is rotated counter-clockwise the end of the distender 144 Vengages the notch 143 and, eX- cept for the action of the hammer 147, would remain there and hold the spring .66 distended. At the end of the counter-clockwise movement of the cam 50, however, the pin 150 trips the trigger 149 permitting the hammer to be thrown by its spring so as to hit the upper end of the pawl 145, thereby releasing the lever 142 which, with its hub,

turns so as to release the distender, whereupon the spring 66 contracts. This action results in a slight delay in the action of the spring 66., insuring suihcient time for the carriers and other parts to be properly position-ed. The stud 148 on the clockwise movement of the cam-plate 50 recocks theA the full advantage of the slide 26 upon therack bar carrier, I provide a transverse sliding plate 152 (Figs. 5 and 6) which has upward projections 153 engaging with the left hand edges of flexible shutters 14. This sliding plate 152 is provided with an oblique slot 154, in which lies an anti-friction roller 155, mounted upon the end of a lever 156 pivoted at 157 in the right hand side-frame of the key-board. rThis lever is provided at its rear end with a roller stud Y' 158 (Fig. 5) which lies in the path of a yielding trip pawl 159 pivoted to the upper end of an arm 160 which is pivotally mounted at 161 on the side frame 7. The upwardly projecting arm 160 has a slot 162, in

which lies a stud 163 carried by the trip pawl, thestud being normally held inthe rear end of said slot jby theaction of a spring 164 connected to the trip pawl and the upwardly extending arm.' This trip pawl has a seat 165, which, when the trip pawl is moved forward, comes beneath'the roller ,stud 158, and when the tripv pawl is moved backward, raises the rear end of the lever 156, so as to depress the ro-ller155. The spring 164 normally holds the trip pawl in the position shown but permitsrit to yield, so that its seat 165 readily passes vbeneath the roller stud 158 upon the lever 156,' during forward movement of the trip pawl. The upwardly extending projection 167 `upon the trip pawl prevents the trip pawl from snapping by the roller stud 158. Vhen the trip pawl is moved in a rearward direction it acts to raise the rear end of the lever 156 and to depress its forward end, whereupon the roller 155 causes the plate 152 to move to the right, causing the projections 153 to engage with the flexible shutters, move them to the right out of the path of the studs 13 upon the depressed keys, permitting the keys to return to normal position under the action of their springs 17.

In order to give the arm 160 (Fig. 5) the necessary movements to move the trip pawl backward and forward,. provide that arm with a roller stud 168 andform a. slot 169 in the main cam 50 (Fig. 1), in which that roller stud moves and by which it is actuated. Vhen the handle of the machine is pulled so as to cause the cam 50 to move in a forward direction, the arm 160, together with the trip pawl 159 is also moved in a forward direction, until the seat 165 of the trip pawl ,comes beneath the roller stud 158 upon the lever 156. `When the cam 50 moves in backward direction, the slot 169 acting upon the roller stud 168 vcauses the armk 160 together with the trip pawl 159 to move in a rearward direction and so that the trip pawl actuates the lever 156 so as to release the keys in the manner above described.

-a total or sub-total key is depressed. 1n

order to secure this, T provide a bell crank lever 170 pivoted to the right hand frame (Figj) whose lower arm extends into the pathway of an' extension ofthe rod 13.5A

which passes through' slots'135 -in the keyvboard side frames. The oth ei; arm of this 'b`ell crank is Connected by a link 171, tothe 1. In a calculating machine, theicombina- 'y tion of a keyboard, keys and'stops therein, the stops being actuated by said keys, a shaft, oscillating rack-bar carriers revolubly mounted on said shaft and coperating with said stops, rack-bars carried by said carriers and movable toward and away from the axis of revolution thereof, accumulating gears coperating with said rack-bars, carrying mechanism for carrying from one of said gears to the next, a main cam-plate actuating said carriers, a secondary cam-plate actuated by said main cam-plate, said secondary cam-plate acting to position said rack-bars and whenractuated by said cam.-

plate to hold them in engagement with said' gears, a detent for holding said secondary cam-plate in actuated position, and means actuated by said main cam-plate for releasing said secondary cam-plate near the end of the return'movement of said main vcamplate, a totalizing arm and means controlled by said arm for preventing the holding action of said detent during substantially all of the return movement of said main camplate when said arm is intotalizing position.v

2. In a calculating machine, thecombinaltion of a keyboard, keys 4and stops therein,

the stopsbeing actuated by said keys, a shaft, oscillating rack-bar carriers revolubly mounted on said shaft and coperating with said stops, rack-bars carried by said carriers and movable toward and away from the axis of revolution thereof,'accumulating gears coperating with said rack-bars, carrying mechanism for carrying from one of said gears to the next, a main cam-plate actuating said carriers, a secondary cam-plate actuated by said main cam-plate, said second. ary cam-plate acting to .position said rackbars and when actuated by said cam-plate to hold them in engagement with said gears, a detent for holding said secondary cam-plate in actuated position, and means Aactuated by said main cam-plate for releasing said secondary cam-plate near the end of the return movement of said main cam-plate, a totalizing arm and means controlled by said arm vfor preventing the' holding action of said detent during substantially all' of the return movement of said main cam-plate when said arm is in totalizing position, and total and sub-total levers for placing 'said totaliZing-arm in 'different bly mounted on said shaft and coperating with said stops, rack-bars carried by said carriers and movable toward and away from. the axis of revolution thereof, accumulating ,gears cooperating with said rack-bars, car-` rying mechanisnifor carrying from one of 'said gears to thel next, a main cam-plate actuating said carriers, a secondary camplate actuated by said main cam-plate, said secondary cam-plate acting to position said rack-bars and when actuated by Said camplate to hold them in engagement with said gears, a detent for holding said secondary cam-plate in actuated position, and means actuated by said main cam-plate for releasing said secondary cam-plate near the end of the return movement of saidmain camplate, a totalizing arm and means controlled by said. arm for preventing the holding action lof saidv detent during substantially all of the return ymovement of said main cam-plate when said arm is in totalizing position, and total and sub-total levers for placing this totalizing-aim-in dif` ferent positions, and an interlock controlling the movements of said total-arm and said total and sub-total levers.

4. In a calculating machine, the combination of a keyboard, keys and stops thereon, the stops being actuated by said keys, a shaft, oscillating rack-bar carriers revolubly mounted on said 'shaft and cooperating with said stops, rack-bars carried by said carriers and movable toward and away from the axis of revolution thereof, accumulating gears cooperating with said rack-bars, carrying mechanism for carrying from one of said gears tothe next, a main cam-plate actuating said carriers, a secondaryv cam- 4plate actuated by said main cam-plate, said secondary cam-plate acting to position said placing said' totalizing-arm in diterentpositions, and means preventing the operation of the inachine When said totalizing-arm is held in sub-totalizing position by said total lever. P

5. In a calculating machine, the combination of a main shaft, a main cam-plate thereA on, a plurality of series of stops, a plurality of rack-bar carriers on said shaft, a plurality of radially movable rack-bars on said carriers, a plurality of gears, said carriers and rack-bars having a movement vor oscil lation aboutthe axis of said shaft, lsaid rackbars havingracks and curved slots concen-A tric with said axis When said racks are positioned to engage said gears, bell-crank levers engaging said slots, said main cam plate coacting With saidstops to4 position and actuate said carriers, and a secondary cam-plate acting through said bell-crank levers to move said rack-bars radially into and out of engagement with said gears, means for oscillating said main cam-plate and a lost motion connection between said cani-plates, and meansfor temporarily hold- 'ing said secondary cam-plate in actuated position, v

6. In a calculating machine, the combination of a main shaft, a., main cam-plate thereon, a-plurality of series of stops, a plurality of rack-bar carriers on said shaft, a plurality of radially movable rack-bars on said carriers, a plurality of gears, said car-' riers and rack-bars having a movement of oscillation about the axis of said shaft, said ra cli-bars having racks and curved slots concentric With said axis when said racks vare positioned to engage said gears, bell-crank levers engaging said slots, said main camplate coacting With said stops to position and actuate said carriers, and a. secondary cam-plate' acting through said bell-crank levers to move said rack-bars radially into and out of engagement with said gears, means for oscillating said main cam-plate and a lost motion lconnection between said cam-plates, means for temporarily holding I said secondary cam-plate in actuated position, a totalizing mechanism and means controlled by the totalizing mechanism for releasing said secondary cam-plate at the beginningjof the return movement of said main cam-plate. l

7. In a machine of the character described, the combination of a reciprocating actuator having a yielding` abutment piece provided with an elongated face, a-limiting stop, a series of inovablenormally retracted stops, each adapted to be projected into the normal path of said abutment piece, said series occupying a space less than that occupied by said elongated face and any of said movable stops engaging and retracting said abutment piece when actuated While said actuator is in one'ot its extreme positions provided With an elongated face, a limiting stop, a series of movable normally retracted stops, each adapted to be projected into the normal path of v,said abutment piece,-said series occupying a space less than that occupied by saidelongated face and any of said movable stops engaging and retracting said abutment piece when actuated While said actuator is in one of its extreme positions and in engagement with said limiting stop, said abutment piece vreturning to ncrma-l position when said actuator is returned to its other extreme position, an initial stop engaging said abutment piece so as to hold said actuator in said other extreme position, any stop of said series being adapted when actuated to move said initial stop out of the normal path of said abutment piece.

9. In a machine of the/.character de-v each adapted to be projected into the normal path of said abutment piece and to retract the same when opposite thereto and to move said initial stop out of the normal path of said abutment piece said series occupying a space less than that occupied by 'said elongated face.

10. In a machine of the character described, tlie combination of a reciprocating actuator having a yielding abutment piece provided ivitli an elongated tace, a limiting stop, a series ot movable normally retracted stop bars each adapted to be projected into the normal path of said abutment piece, said series occupying a space less than that occupied by said elongated face and any of said movable stop bars engaging and retracting said abutment piece When actuated While.

piece, said abutment piece being slidingly mounted upon said actuator.

. and in engagement with said limiting stop,

said abutment piece returning to normal position when said actuator is returned to linitial, position, an initial stop engaging said abutment .piece so as to hold said actuator in initial position, any stop bar of said series being adapted when actuated to move said initial stop out of the normal' path of said abutment piece, said limiting stop being located below said series of stop bars.

12; In a calculating machine, the combination of a single totalizing-arm for setting the machine for either totaling or sub-totaling, two levers acting on said single arm,

I ,one for placing it in totalizing position and the other for placing fit in sub-totalizing position, and keys for operating said levers,

radially movable rack-bars, a rack-bar con-` trolling-cam, and means controlled by said totaliZing-arm for-releasing said'cam in advance of its time for release in normal calculating operation. f

l 18. In a calculating machine, the combination of a series of accumulating gears, a lSeries ofrcombined alining and carrying-pawls therefor, and means for actuating each of said pawls to both aline said gears .and carry from one gear to the next adjacent gear.

.14. `In a calculating machine, the combination of a series of gears, a series of combined alining yand carrying-pawls, levers to which said p awls 'are pivoted, means for selecting from said levers those which correspond to gears to which carrying is to be done, means for moving the selected levers while their pawls are in Ialining engagement with said gears and restoring them to position While their pawls are disengaged from said gears each pawl being both an alining and a carrying pawl. l

15. In a calculating machine, the combina'- tion of a series of gears, a series of pawls, a series of carrying levers to which said pawls are pivoted, a series of bolts supporting said levers respectively, a series of dogs to which saidbolts are connected at one end, and a cam on each gear for retracting the bolt controlling the lever which carries the pawl which engages the next adjacent gear.

16; In a calculating machine, the combination of a series of gears, a series of pawls, a series of carrying levers to which said pawls are pivoted, a series of bolts supporting said levers respectively, a series of dogs to whichl said bolts are connected atV one end, and a cam on each gear for retracting theV bolt controlling the lever which carries the pawl which engages the next adjacent gear, and

a universal bob lengaging and temporarily supporting in approximately their initial positions all of said levers whose bolts are retracted, and means for withdrawing said universal bar from beneath all of said levers.

17. In a calculating machine, the combination of a main 'cam-plate, a secondary cam-plate, lost motion connecting means bef positioning said carriers.

18. In a calculating machine, the combination of a main cam-plate, a secondary' cam-plate, lost motion connecting means between said cam-plates, oscillating rack-bar carriers released and returned by `said main cam-plate, rack-bars on said carriers moved radially by said secondary cam-plate, a detent for holding said secondary arm in actuated position, means for releasing said detent near the end of the return movement of said main cam, and means for angularly positioning said carriers when moved into totalizing position for releasing said' secondary cam-plate inA advance of the time at which it would be released byv the normal action of said main cam-plate.

19. In a calculating'machine, the combination of a retracting spring, a distender, a lever having a retaining notch for said dis- `tender, an oscillating cam-plate, a hammer revoluble about the axis of said cam, a trigger for said hammer, a detent engaging said lever adapted to be hit by said hammer,

means on said cam-plate for cooking said hammer, and means on said cam-plate for releasing said trigger so as to permit. said hammer to hit said detent and withdraw it from lsaid lever. i j I 20. In a calculating machine, the combination of a series of rack-bar carriers, a seo n ries of rack-bars carrled thereby, a series of initial stops, a plurality of series of secondary stops, each initial stop extending in front of all the stops of one of said series of secondary stops; each secondary stop of any series acting directly on the initial stop of that series to `withdraw it from the path of the corresponding carrier, and keys for actuating said secondary stops, the releasing` lmovement of the initial stop being in the opposite direction from the releasing movement of any secondary stop.

v:21. In a calculating machine, the combiestarse nation of a series of rack-bar carriers, a series of rack-bars carried thereby, a series of initial stops, a plu ality of series oi secondary stops, each initial stop extending in front of all the stops ot one oi said series ot secondary stops, each secondary stop orn any series acting directly on the initial stop of that series withdrawit from 'the path of the corresponding carrier, and keys for actuating said secondary stops, totalizing means .and a bar directly engaging all oi said initial stops and adapted to withdraw all ot said initial stops from the paths of all oic said carriers, said bar being actuated by said lotalizing means, the releasing movement or the initial stop being in the opposite direction from the releasing movement of any secondary stop.

22. in a calculating machine, the combination ot a series of rack-bar carriers, a series of rack-bars carried thereby, a series of initial stops, a. plurality of series of secondary stops, each secondary stop of any series acting to withdraw the initial stop of that series from the path of the corresponding carrier, keys for actuating saidsecondary stops, and totalizing means adapted to withdraw all of said initial stops from the paths or' all of said carriers, and means for releasing all of said initial stops before said to-.

talizing means are restored to normal position when said totaliaing means are held in totaling position.

23. ln a calculating machine, the combination of a series o1"- q'ears, two-faced cams carried thereby, carrying paivls, bolts controling said pawls, dogs stopping said cams when said cams are revolved in one direction and together with said bolts retracted by said cams whenv said cams are revolved in the other direction, means 'for causing said pawls to carry when released', and means :tor restoring said pawls to initial position.

2d. ln a. calculating machine,the Combination or a base, a motive shaft thereon, a frame on the rear or" said base, driven mechanism carried by said tra-me, a driving spring extending from a'crank-arm on said motive shaft anil connected near the rear of said frame to said driven mechanism, said frame being pivoted 'at its lower forward end to the central portion of said base and revoluble through an angle upon said pivot.

25, ln a calculating machine, the combination of a base, a motive sha-lit thereon, a frame on the rear of said base. driven mechanism carried by said frame, a driving spring extending from a crank-arm on said motive shaft and connected nea-r the rear or said trame to said driven mechanism, said frame being pivoted at its lower forward end to the central portion of said base and revoluble through an angle upon said pivot,

and movable means for securing the rear end of said frame to the rear end of said base.

Q6. in a calculating machine, the combination of a base, a frame on the rear end thereof containing' the driven mechanism, a keyboard having keys and stops coperating with said mechanism, said keyboard being removably suspended from the upper front portion of said trame.

2T. ln a calculating machine, the combination of a base, frame on the rear end thereof containing `the driven mechanism, a keyboard having keys and stops coperating with said mechanism, said keyboard being removably suspended from the upper front portion of said frame, the points of suspension being in an axis about which the keyboard is partially revoluble.

28. .ln a calculating machine, the combination of a base, .i frame on the rea-r end thereof containing the driven mechanism, a keyboard having keys and stops coperating with said mechanism, said keyboard being removably suspended from the upper front portion of said frame, the. points of suspension being iny an axis about which the keyboard is partially revoluble, said keyboard and trame having engaging projections preventing the direct upward movement of said Y keyboard relatively to said frame.

29. In a calculating machine, the combination of a base, a Jframe on the rear end thereof containing the driven mechanism, a keyboard having keys and stops coperating with said mechanism, said keyboard being removably suspended from the upper front portion or' said frame, the points of suspension being in an axis about which the keyboard is partially revoluble, said keyboard and frame having engaging projections preventing the, direct upward movement of said keyboard relatively to said frame, a cover secured to said base and holding-said keyboard'against movement about said axis.

30. In a. calculating machine, a frame containing the driven mechanism and forwardly extending movable members, a keyboard containing stops and rearwardly eX- tending movable members coacting with said forwardly extending members, the ends of the coacting members being in diierent horizontal planes, said keyboard being supported by said :trame and revoluble about an axis lying within portions of both said frame and said keyboard and being unrestrained in such movement of revolution by

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