US1742532A - gubelmann - Google Patents

Description

Jan. 7, 1930. w. s. GUBELMANN 1,742,532

BEPEA'TING MECHANISM FOR CALCULATING AND LIKE MACHINES Original Filed Jan. 10, 1900' 7.Sheets-Sheet 1 Jim% INVENTOR.

Jan. 7, 1930. w. s. GUBELMANN REPEATING MECHANISM FOR CALCULATING AND LIKE MACHINES Original Filed Jan. 10, 1900 7 Sheets-Sheet Jan, 7, 1930. w. s. GUBELMANN REPEATING MECHANISM FOR CALCULATING AND LIKE MACHINES Original Filed Jan. 10, 1900 '7 Sheets-Sheet 3 mam A? @MM INVENTOR.

. 1930- w. s. GUBELMANN 1,742,532

REPEATING MECHANISM FOR CALCULATING AND LIKE MACHINES Original Fild Jan. 10, 1900 v Sheets-Sheet 4 MW yaw/M INVENTOR.

Jan. 7, 1930.

w. s. GUBELMANN Original Filed Jan. 10, 1900 7 Sheets-Sheet 5 luvnfronj Jan. 7, I930. w. s. GUBELMANN 1,742,532

I REFEATING MECHANISM FOR CALCULATING AND LIKE MACHINES Original Filed Jan. 10, 1900 I 7 Sheets-Sheet 6 N N I 2 Maw W luvem'oa.

Jan. 7, 1930. w. s. GUBELMANN REPEATING IQIECHANISM FOR CALCULATING AND LIKE MACHINES 7 Sheets-Sheet 7 Original Filed Jan. 10

INVENTOR.

Patented Jan. 7, 1930 UNITED S1ATES PATENT OFFICE,

WILLIAM S. G'UBELMANN, OF BUFFALQ, NEW YORK REPEATING MECHANISM FOR CALCULATING AND LIKE MACHINES Original application filed January 10, 1900, Serial No. 1,004. Divided and this application filed August 10, 1918. Serial No. 249,303.

This application relates particularly to repeating mechanism for calculating and like machines, and is a division of my pending application Serial No. 1,004, filed January '5 10,1900, and eventuating in Patent No.

1,429,201, granted September 12, 1922.

One of the objects of the invention is to ,=provide improved means for adding the same amount on a set of accumulators at each of a plurality of operations of the machine and with a single setting of the keys.

Another object is to provide means for adding the same amounts on a plurality of independent sets of accumulators ateach of a plurality of operations of the machine and with a single setting of the amounts by the controlling keys.

Another object is to provide means for causing printing mechanism to print the same, item or items at each of a plurality of .operationsof the machine and with a single iettin'g of the item or items by the controlling inother object is to provide means for adding the same amount on one set'.of:accumi1- lators at each of a plurality of operations of the machine while adding different amounts on another set of accumulators at .each of said operations of said machine.

w Another object is to provde key mechanism for controlling all of the. above results.

Another object, is to combine the repeat I key with total taking mechanism in such manner that'the operation of the repeat key will automatically renderthe total taking mechanism incap'ableof releasingthe number keys from theirdetainingmechanism.

Other objects will be. pointed out in th following description and claims. M

I have shown a machine embodying re.

peating' mechanism and non-.pr1nt1ng-mecha- .nism, and the combinations of these two mechanisms'have been claimed herein, as they are useful in multiplying. v In the accompanying drawings consisting offseven sheets:

.Fig. 1 is a fragmentary top plaii view of my improved adding and recordingfmachine.

Fig. 2 is a vertical longitudinalsection of i the same; taken substantially in, line 2- 2,

Figure 1, and showing the adding and recording mechanism of one column or set of keys in the normal or inoperative position. Fig. 3 is a fragmentary perspective view of the units gear segment and controlling arm 5 of the main adding mechanism.

, Fig. 4 is a perspective View of one of the registering keys.

Fig. 5 is a fragmentary perspectiveview showing the key lever, the main gear segc0 ment, the controlling arm and the printing 1sgegment of one of the higher columns of numers.

Fig. 6 is a fragmentary longitudinal sectional elevation taken substantially in line 0-6, Figure 1, and showing the auxiliary adding and printing mechanism.

Fig. 7 is a fragmentary longitudinal sectional elevation taken substantially in line 7-7, Figure 1, and showing the mechanism whereby words are printed.

Fig. 8 is a longitudinal sectional-elevation, taken substantially in line 8--8, Figure 1, and showing particularl the "mechanism wherebydifferent parts 0 the machine may Z5 be thrown into and out of gear.

Fig. 9 is a vertical section taken substam tially in line 9 -9, Figure 2.

Fig. 10 is a vertical transverse section taken in line 10-10, Figure 2.

' Fig. 11 is a fragmentary transverse sectional elevation taken in line 1l-11, Figure 2, and showing the mechanism for holding the keys in their depressed position and for releasing the same. Fig. 12 is a fragemntary perspective view of the key holding and releasing mechanism. Fig.1? is a fragmentary transverse sectional elevation, taken inline 13-13, Figure 2. J 9o Fig. 14 is a similar view showing one of the keys locked in a depressed position.

Fig.15 is a fragmentary vertical section in line 15-15, Figure 11. Figs. 16, 17 and 18 are views of details. 9.5

Like letters of reference referto like parts in the several figures. a General construction 1 represents themainv frame of the machine 1 which may be of any suitable construction so as to support the working parts of the machine.

2, Figure 2, represents a number of main dials which register the total of the numbers which are added together. These dials consist preferably of cup-shaped wheels which are numbered on their periphery and are mounted in their proper order on a transverse dial shaft 3, which is journaled in bearings on the main frame, the dials being so arranged that the dial representing the lowest number is arranged on the right hand end of the series and the dials representing the successively higher numbers being arranged successively in their order toward the left from the dial representing the lowest number. The lowest or righthand dial is pref erably divided on its periphery into eighths 0 so as to indicate fractions of a cent in eighths,

more than tens of millions.

andthe remaining dials are graduated on their periphery according to the decimal system into tenths.

fractions of a cent to tens of millions, but if desired, additional dials may be added to the right and to the left of the series, if it is desired to register smaller divisions of a cent or Each of the main 'total dials 2 is provided on its left hand side with a gear pinion 4, which is rigidly connected therewith, as shown in Figures 2 and 6. The pinion .of the fraction wheel has eight teeth while the pinions of the remaining dials are each provided with ten teeth.

5 represents the main registering gear segments, one of which is provided for each of the dials 2 and is adapted to engage with the pinion thereof, for operating the respective dial. Each of these gear segments is arranged in rear of itscompanion gear pinion and is provided at its lower end with a rearwardly projecting arm 6 which is pivoted loosely on a transverse supporting rod 7. This rod is mounted with its ends on the upper ends of two rock arms 8 which turn loosely with their lower ends on' a transverse rock-shaft 9. The rock-arms 8 are connected by a transverse bar 10 which compels the two arms tomove'back and forth together. In the normal position of the gear segments when the machine is at rest these segments are retracted rearwardly out of engagement with the dial pinions of the dials and the segments-are elevated so thattheir lowermost teeth are opposite the spaces between the ad- As shown in the drawings ten total dials are shown and extend from transverse stationary bar 12 in the rear part of the machine. The gear segments are moved forwardly so that their teeth engage with the dial pinions 4 by means of a shifting rock-arm 13, which is preferably secured to the right hand rock-arm 8 and projects rearwardly. Upon raising the shifting rockarm 13, the rock-arms 8 are swung forwardly and the gear segments 5 are engaged with the dial pinions, while upon swinging the shifting rock-arm downwardly, the rock-arms 8 are swung rearwardly and the gear segments are disengaged from the dial pinions.

14 represents a cam whereby the gear segments are engaged with the dial pinions. This cam is mounted on the upper portion of a vertically swinging rocking frame 15 which is arranged on the right-hand side of the machine. This cam is provided at its front end with an incline or cam face 16 and at its rear end with a concentric face 17. When the cam is in its rearmost or retracted position, its incline stands in rear of a roller or projection 18 on the rear end of the shifting arm 18, as shown in Figures 2, 6 and 9. Upon swinging the rocking frame 15 so that the cam 14 moves forwardly, the incline of the latter engages underneath the roller 18 and raisesthe arm 13, thereby moving the arms 8 forwardly. The throw of the incline 16 is just sufficient to engage theteeth of the gear segments with the dial pinions. When the roller 18 has been raised to the top of the incline, the concentric portion of the cam engages with the roller during the continued forward movement of the cam and the latter does not shift the gear segments any further forward.

When the rear end of the concentric face 17 of the cam passes forwardly from underneath the roller 18, the constant pull of the springs 11 causes the rock-arm 13 to be depressed and the rock-arms 8 to be moved rearwardly, thereby disengaging the gear. segments from the dial pinions. Upon now moving the cam 14 backwardly together with the rocking frame 15, this cam does not affect the arm 13 and the parts connected therewith but is affected by said arm at the last portion of the backward movement of the cam, at which time the back or lower side of incline 16 engages with the roller 18 which lifts said incline and at the end of the backward movement of the cam, the latter clears said roller and drops behind the same, as shown in-Figure 2, preparatory to again raising the roller 18 and connecting parts during the next forward movement of the cam 14.

For the purpose of permitting the front end of the cam to rise so as to clear the roller 18, this cam is pivoted at its rear end to the rear portion of the rocking frame 15. The upward and downward movement of the front end of the cam is limited by means of a lug 19 proj ectlng from the side of the cam and engaging with a slot in the adjacent part of the rocking frame 15, as shown in Figure 9. The rockingframe -is secured withrits lower portlon to a transverse rock-shaft 2O journaled in the main frame and provided outside of the frame with a hand crank 21, as shown in'Figure 9, whereby this shaft is rocked and the parts connected therewith are operated.

ends with the transverse rod 7 by lifting plates 23. '24 represents two shifting arms which are mounted loosely at their rear ends on the rock-shaft 20and which support at their other ends a transverse bar .25 which transverse bar is connected "at its ends by two links 26, with the lifting plates 23, whereby I ments and the other parts connected therewith resting on said bar. Upon depressing V the transverse bar 25, the lifting bar 22 is moved downwardly andthe gear segments resting thereon are permitted to move down: wardly with the bar until the segments are arrested.

Each of held in contact with the lifting bar 22 by a spring 27'which connects the arm of the segment with the transverse bar 25. If the down-- ward movement .ofthe geai'fsegment is ar-" rested while the shifting arms 24 continue to move downwardly, the lifting bar 22is moved away from the underside of the arm of the gear segment and the spring 27 is strained.

The transverse bar 25 is arranged at one end in a segmental notch 28 formed'in the front part of the rocking frame 15, shown in Figures 2, 6 and 9 and its opposite end' isarrangedin a similar segmental notch 28,

' formed in a rocking frame 29 which is se-- cured to the operating shaft 20 on the'lefthand side of the machine. The rocking frames 15 and 29 together with the operating shaft 20 constitute the main or universal operating frame of the machine; I 0

When the, machine is at rest, as shown m Figure 2, the transverse bar 25 engages with the front side of the notches 28 in the rock{ .ing frames 15and 29. Upon turning. the,

' ment independent of the transverse bar 25.

The latter remains at rest until the inclinedfrontend 16 of the cam-14 has raised the arm 13 and moved-the gear segments into engagement with -the dial pinions, during which movement the rocking frames move idly the extent of their notches 28, along the ends of the bar 25 without disturbing the latter. After the gear segments have been upon raising the shifting arms 24, the lifting bar 22 is causedto raise the gear seg'- PlIllOIlS.

the gear segments is yieldingly Upon now turningtherock-shaft 20 baclr- 1 engaged with the dial pinions, the continued forward movement of the rocking frames causes the rear ends of'their notches 28 to engage with the bar25 and depress the same,

thereby causing the lifting bar 22 to be moved downwardly and strain the springs 27. This causes all of the gear segments which are free,

to be moved downwardly and to-continue turned depends upon the position in which their downward movement until they are arrested. During the downward movement of the downward movement of its operating seg-' ment is arrested; After the segments have been arrested in their downward movement, they remain in this position while the rocking frames complete their forward movement. At the end of the forward movement of the rocking frames, the roller '18 of the rock arm 13 drops off from the rear end ofothe concentric part of the cam 14:, thereby allowing the springs 11 to pull the gear segments rearwardlyout ofengagement. from the dial wardly by means of the handle 21, the rocking frames are moved backwa'rdly, until the front endsof the notches engage'with .bar 25.

lVhen the latter is so engaged it is moved" backwardly' with the rocking-frames to the end of their rearward movement which causes the transverse bar 25 to lift the lifting bar 22 and the gear. segments which have been depressed into their highest or normal position. During this upward movement of the depressed gear segments they are out of engagement with the dial pinions, so that the dials are not turned backwardly with the segments, but remain in their shifted position, 30 represents a number of. elbowshaped controlling arms, which form part of the devices whereby the downward movement of the registering gearsegments is controlled. One of these arms is arranged along the.left-hand side of each gear segment and consistsof an upright front part and a horifrom the lower end of the upright part, thereby leaving a clear space in rear of the upright part of the controlling lever as represented in Figures 1, 2, 3, 5- and 6, The rear end of the lower part of each controlling arm is mounted loosely on a transverse support ing bar 31, while the'upper end of'its front or upright part isloosely connected with the upper portion of its companion gear segvzontal lower part which extends rearwardly ment. This loose connection permits the controlling arm and the gear segment to swing freely-about their individual axes, which are arranged parallel but out of line, and also permits the gear segment tomove forward and backward into and out of engagement 1 with its companion dial pinion. In the uppermost position of the controlling arms the same bear with their upper ends against a" transverse stop bar 32, as shown 1n Figure 2, which limits the upward movement of these arms. Each controlling arm is provided on the rear part of its upper end with a locking lug 33, and on the front part of its upper end with a stop lug 34, both of which lugs project toward the left and are preferably stampedout in one piece with the controlling arm.

The operation of the registering devices is controlled by a number of elbow-shaped key levers which are arranged side by side and pivoted to a transverse supporting rod 35. Each key lever is provided with a lower actuating arm 36, which projects forwardly, and an upper stop arm 37 which projects upwardly along the left hand side of one of the controlling arms and gear segments, as represented in Figures 2 and 5. -Eachof "these key levers is provided on the rear" side is moved forward into engagement with the adjacent dial pinion, and the rocking frames are turned forwardly for depressing the gear segment, the spring 27 of this segment will be strained without, however, shifting the segment. At the end of this forward movement of the rocking segments, the roller 18 i of the rock arm 13 drops off from the rear end of the cam 14, the gear segment is moved rearwardly out of engagement from the dial pinion and then the rocking frames move backwardly without having shifted the dial.

The upper arm of each key lever is provided on its front side with a vertical series of differential stop shoulders 39, which are arranged step fashion and extend from the upper endof this arm downwardly and forwardly thereon, or in other words the stop shoulders 39 are arranged radially out of .linewith one another and different distances from the pivot of the key lever. These stop shoulders of the key lever are adapted to be moved forwardly into the path of the stop lug 34 on the controlling arm. The stop shoulders are arranged different distances from the stop lug 34 of the controlling arm, so that by moving different stopshoulders of the key lever into the path of the stop lug of the controller arm, the latter and the gear segment connected therewith may be der of the key lever is most remote from the stop lug of the controlling arm andtherefore requires the greatest forward movement of the key lever, in order to bring this stop shoulder into the path of this stop lug.

The stop shoulders of the key lever are so arranged that the distance from the stop shoulders to the path of the stop lug gradually grows less from the uppermost stop shoulder to the lowermost stop shoulder. The relative position of the different stop shoul ders of the key lever is such that when its locking shoulder 38 remains in engagement with the locking lug 33 and the gear segment is simply moved into and out of engagement with its dial pinion,,the latter remains at zero, if the same has not been previously moved. But when the key lever has been moved forwardly, so as to disengage its locking shoulder from the locking lug and moves one of its stop shoulders into the path of the stop lug of the controlling arm,the latter arm. and gear segment connected therewith will be moved downwardly upon moving the rocking frames forwardly, until. the stop lug of the controlling arm strikes the respective stop shoulder of the key lever which stands in its I path, whereby the gear segment while turning in engagement with the adjacent dial. gear pinion turns the same forward. a By turning the key lever forward more or less and'moving one or the other of its stop shoulders into the path of the stop lug 34 of the controlling arm, the distance which this arm descends can be varied, thereby varying the number of spaces which its gear segment turns the adjacent dial.

Main number key mechanism 40 represents the main keys whereby the key levers of the main registering and recording mechanism are operated, and which are guided with their depending stems in the top 41 and bottom 42, of the key-board. As

shown in the drawings, nine longitudinal columns of these keys are arranged transversely side by side. The first column on the right-hand side of the machine contains seven keys and represents fractions of one-eighth of a cent, the next column toward the left contains nine keys and represents cents and the remaining columns of keys toward the left each contains ninekeys and represents progressively higher orders of numbers according to the decimal system, so that the registering .keys in the last or left hand column represent hundreds of thousands of dollars.

The lowest numbers of the several columns of keys are arranged transversely in a row on the rear part of the key-board and the corresponding highernumbers of the several columns are arranged likewise in transverse rows and progressively in their order toward the front end of the key-board.

Eachofthe registering keys is yieldingly.

. key and bearing with its lower end against the bottompf the.k ey-board. The upward movement of each key is limited by a shoulder 44 formed on the upper part of its stem and engaging with the underside of the top of the keyboar Y I 7 The downward movement of all of the keys is substantially the same, but the arrangement of each column of keys lengthwise of the lower actuating arm of each key lever causes the-keys to bear against their lever at different distances from its pivot, so that by depressing different keys the same distance, the

.key lever will be turned different distances.

The keys having thev lowest numbers bear against their respective key levers nearest the pivot and consequently the levers are thereby thrown the greatest distance, and the uppermost stop shoulders are shifted into the path of the stop lug 34 of the respective controlling arms. The throw of each key lever upon depressing any one of its keys is such that the proper stop shoulder on its upper arm is moved into'the path of the stop lug 34 of the controlling arm, and the downward movement of the respective gear segment is arrested after having turned the adjacent dial gear pinion a number of spaces corresponding to the number of the key which is depressed.

Loose connection for segments The loose connection between each controlling arm and its gear segment, heretofore referred to, is shown in its simplest form in the connection between the controlling arm and the gear segment, which are controlled by the initial or lowest column of registering keys. As shown in Figures 1 and 3, the loose connection between the controlling arm and the gear segment of the lowest registering device consists of upper and lower-guide lugs 45 and 46 arranged on the upper end of the segment and bearing against the upper and lower guide faces 47 and 48, which 'are formed on the upperend of its companion controlling arm. As the controlling arm and segment rise and fall, the guide lugs of the segment slide back and forth on the guide'faces of the arm. The guide faces are so constructed that the back and forth movement of the segment on the arm is radially with reference to the dial pinion in all positions of the segment. By so forming the guide faces of the arm, the gear segment can be engaged with and disengaged from the dial pinion in all positions of the segment without disturbing the position of the dial pinion. The construction of the loose con-' nections between the controlling arms and gear segments of all of the higher registering devices above the fractional registering device are combined with carrying devices, whereby each registering dial, upon making one complete turn, causes the next higher dial to be turned forward one space, thereby carrying up a number from one column'to the nexthigher column. The loose connections between the controlling arms and the segments and the carrying mechanism of the higher registering devices are constructed as follows As shown in Figures 1, and 2, each controlling arm is provided at its upper end with upper and lower guide faces 47 and 48 and its lower guide face is engaged by a lower guide lug .46 on the adjacent gear segment, the same as in the coupling between the controlling arm and segment of the initial registering device. The gear segments of the higher registering devices are each provided with an upper guide lug 49 which is adapted at times 7 to bear against the upper guide face 47 of the guide face of the companion arm when no number is carried from a lower to a higher registering device. is held in. this elevated position above the adjacent guide face by a rocking latch 50 "which is arranged in a notch in the rear side of the gear segment and which normally projects toward the left and-engages with the upper guide face 47 of the adjacent controlling arm, as shown in Figures 2 and 5.

During the ordinary up and down movement of each higher controlling arm and gear segment, the latter is guided by its lower guide lug 46 and the locking latch 50 engaging with the lower and upper faces of the adjacent arm, this movement being'the same as the movement of the controlling arm and gear segment of .thefractional registering device. Normally the downward movement of the controllingarm is determined by the position of its companion key lever and this arm in turn controls the extent of the down- The upper guide lug 49 latter.

more than the position of the key leverpermits the same to move.

The withdrawal of the locking latch of each higher registering device is controlled by the next lower registering device and the withdrawal of each latch is eflected when the next lower registering device has made one complete turn and arrived at zero. Each of the locking latches is pivoted on the right hand sideof its adjacent gear segment, so as to turn transversely with reference to the The latch is turned toward the left into its operative position by a spring 51, the movement in this direction being limited by a shoulder 52 arranged on the latch and hearing against the right hand side of the gear segment. 53 (Fig. 5) is an upright trip plate bar 35 and is provided at its upper end with a rearwardly and then forwardly projecting hook 55, and in front and below said hook with a bend forming a bearing finger 56 (Fig. 16). 57 represents trip cams arranged on the left-hand side of each registering dial pinion and connected with the adjacent pinion and dial, but separated from the pinion by an intervening space or groove. The face of each of these cams may begin at its lowermost point near the axis thereof and then extend outwardly in a spiral line terminating with its highest point in line with its lowermost point with which it connects radially and abruptly. The trip cam of the fractional registering device has its face divided into eight parts, each part of which except the first is arranged one-eighth of a space further from the center of the cam than the preceding part, while the trip cams of the higher registering devices each has its face divided into ten parts, each part except the first being arranged one-tenth of a space farther from the axis of the cam than the preceding part. Each of the trip arms 54 extends upwardly along the right-hand side of the trip cam of a lower registering device, and its shoulder 56 engages with the face of this cam, while the hook 55 at its upper end extends toward the left and is adapted to engage with the trip plate 53 of the next higher registering mechanism. In the initial position of each trip arm, its shoulder 56 engages with the lowest part of its trip cam, as represented in Figures 2 and 6. As the trip cam is turned in the direction of the arrow, Figure 2, at the same time that the dial and gear pinion are moved forwardly, by the adjacent gear segment, during the adding operation, the trip arm is moved backwardly by the gradually rising face of the trip cam. During this back ward movement of the trip arm, its hook engages with the trip plate 53 of the next higher registering device and is deflected toward the right thereby, the hook being sufficiently elastic for this purpose. After the hook has passed in rear of said trip plate, the hook owing to its resilience springs back to its normal position, so as to stand behind said trip plate. When the shoulder of the trip arm reaches the highest part of the face on the trip cam the trip arm has been shifted to its rearmost position. Upon now turning this cam forwardly another space together with its companion dial and pinion, the highest part of the cam is carried from underneath the shoulder ofthe trip arm and the latter is moved forwardly over the abrupt face of the cam until its shoulder 56 again engages with the lowest part of the cam face. During this IIIOXGIIlGllt of the trip arm,its hook strikes the rear side of the trip plate 53 of the next higher registering mechanism and turns the same forwardly, thereby disengaging the locking latch from the adjacent controlling arm and permitting the gear segment carrying the trip plate to move forward one space. The forward movement of the trip arm is effected when the dial with which its trip cam is connected has made one complete rotation and again stands at zero, whereby the addition represented by this complete rotation is carried to the next higher registering device. The forward movement of the trip arm is effected quickly by a spring 58, which connects with a stationary cross bar 59 arranged in front of the trip arms. The trip plate 53 of each registering device is so arranged and is of such length that the hook of the next lower trip, arm can engage with the rear side of the plate, for disengaging its latch in any position of the gear segment carrying the plate, and in order to accomplish this engagement it is obvious that cams 57 should be constructed so as to give arms 56 the proper throw. If a gear segment is locked in its highest position by reason of none of its companion keys having been depressed, the withdrawal of its latch from the controlling arm simply permits the gear segment to drop one space and turn its companion dial pinion forward one space, while in engagement therewith, the movement of this dial representing one number carried up from the next lower dial. If any one of the keys of the key levers has been depressed, so as to release the gear segment and permit the same to move downwardly for effecting an addition, and if during this time the next lower registering device has made a complete turn, so as to require the carrying up of a I in addition to the spaces corresponding to the depression of its respective key.

Then the locking latch has been withdrawn so as to permit a gear segment to move downwardly one space farther than its controlling arm, the latch remains in this position during the subsequent upward movement of the arm and the segment until the upward movement of the arm is arrested by striking thestop bar 32, and the gear segmentcont-inues its upward movement independent of the arm the extent of one space. The gear segment has now reached its highest position, and its latch is again swung automatically, by its spring, over the controlin this instance the millions of dollars is ling arm. The controlling arm and gear segment now remain in this relative position until another number is to be carried up from the next lower registering device.

WVhen the controlling arm has been retracted to its highest position, the adjacent key lever is moved into its normal retracted position, so. that its locking shoulder 38 engages with the locking lug 33 of the controlling arm and locks the latter against downward movement. The. return movement of each key lever is preferably effected bya spring which connects the upper arm of the key lever with the transverse shaft 9, as shown in Figure 2, or with some other convenient part of the machine. The lower guide lug of the gear segment is not absolutely necessary because the weight of the parts connected with the controlling arm and arranged in rear of its pivot is sufficient to raise the arm, butit is preferable to employ this lower guide lug 46 on the gear segment becauseit compels the arm to rise with the gear segment and avoids displacement of these parts. with reference to each other,

and also serves as a stop to limit the upwar movement of the gear segment.

The gear pinion and the co-operating gear segment of the fractional registering device are so constructed that the fractional dial makes one rotation whenever it is moved forward eight spaces. After the fractional dial has made one rotation the whole number represented by this rotation is transferred by the first carrying device from the registering mechanism of the fractional dials to the next higher registering device which represents cents. The complete turns of each of the following registering devices are in. like manner carried or transferred to the next higher dial by the respective carrying device. The dial which records the highest number;

preferably operated only by the adjacent carrying device of the next lower dial and is incapable of being operated directly from the key-board because it is not provided with of these shifting levers is mounted loosely on the supporting bar 35 adjacent to the left hand side of each of the key levers and is provided on its upper arm with a forwardly projecting feeling finger 62 and with a shifting finger 63 which extends behind the upper arm of the adjacent key lever. Thefeeling levers have their fingers arranged in rear of the total cams, 57, and each of these levers is turned so that its upper arm moves backwardly by the upper arm of the adjacent key lever engaging with the shifting finger 63 of. the feeling lever. 64 represents a transverse pull bar arranged in rear of the lower arms of the feeling levers and connected' with each of the latter by a pull spring 65, as represented in Figures 2 and 6. This pull bar is connected at its ends to the lower ends of two depending pull or rock arms 66, which are secured at their upper ends to'the rock shaft 9, as shown in Figure 6. Upon turning this rock-shaft, so as to swing its depending pull arms backwardly the feeling levers are turned by means of the springs 65 so as to move the upper arms of these levers forwardly. This movement of the rock-shaft on the rocking frame 29 in the same manner inwhich the like cam 14 is pivoted on its corresponding rocking frame 15. The cam 67 can be, raised and lowered with its front end into an inoperative oroperative position, this movement belng limited by means of a lug 70 arranged on the cam, as shown in Figure 9, and projecting into a slot 71 '(Fig. 8) in the adjacent rocking frame in the same manner in which the movement of the cam 14 is limited.

72, Figures 8 and 9, represents a rearwardly projecting rock-arm secured to the rock shaft 9 and provided at its rear end with a roller or projection 73 which is adapted to be engaged by the cam 67 for turning the rock shaft 9. When numbers are being added with the machine, the cam 14 is depressed, as shown in full lines, Figure 2, so as to be in a position when moved forwardly by the rocking frame 15 to engage the roller on the arm 13, for moving the gear segments into engagement with the dial pinions, and during this time the cam 67 is lifted into the position shown in full lines, Figure 8, so that when the rocking frame 29 is moved forwardly, the cam 67 will clear the roller 7 3 of the rockarm 72 and not disturb the Iigoc-k-shaft 9 and the parts connected therewit If it is desired to restore all of the total dials 2 to zero, the cam 14 is raised into its in'- operative position, shown by dotted lines 14 in Figure 2 and the cam 67 is lowered into its operative position. as shown by dotted lines 67 in Figure 8. Upon now turning the rockshaft by hand so as to move both rocking I 20 frames 15 and 29 forwardly, the cam 14 passes over the roller 18 of the arm 13 without disturbing the same, but the inclined front of the cam 67 engages with the roller 7 3 on the rear end of the rock-arm 7 2 and raises the same until this roller engages with the concentric This pull on the springs '65 causes the feeling levers to be turned until the feeling fingers of their upper arms engage with the spiral surfaces of the trip cams. After the feeling fingers bear against these cams, their movement is arrested and the continued backward movement of the pull-bar 6% simply stretches the springs until the bar reaches the end of its backward movement. The feeling finger of each feeling lever engages with that part of the surface of the adjacent trip cam which is directly opposite the feeling finger, and as these trip cams are turned with the adjacent dial'they present different parts of their spiral surfaces to the opposing feeling fingers, which causes the forward movement of the upper arms of the feeling levers to be arrested in different positions when swung forwardly. During the forward movement of the upper arm of each feeling lever, its shifting finger 63 engages with the rear side of the upwardly projecting arm of the adjacent key lever and moves this arm forwardly. The construction.of the partsin such that the spiral surfaces of the trip can bears a definite relation to the step-shaped series of stop shoulders on the upper arm of the key lever. When the feeling finger of the feeling lever, upon being moved forwardly, bears against the lowestkey leverstop-controlling part'of the adjacent trip cam, the adjacent key lever is carried simultaneously forward with the feeling lever the greatest distance and its uppermost stop shoulder is carried'into the path of the stop lug of the controlling arm. The'succeeding parts of the spiral surface of the trip cam are so constructed that they rise progressively, higher and arrest the forward movement of the feeling lever when the same has carried the adjacent key lever with its corresponding stop shoulder into the path of the stop lug of the controlling arm. This forward movement of the feeling lever and that of the upper arm of the key lever is gradually reduceo. as the progressively higher parts of the trip cam are presented to the feeling finger, and when the highest part of the trip cam is presented to the feeling finger, the feeling lever is prevented from moving forward at all and the upper arm of the key lever is not moved with its locking shoulder out of engagement with the locking stop of the controlling arm and consequently the companion gear segment connected therewith is held against downward movement. After the rocking frames 15 and 29 have been turned forwardly sufficiently to engage the several feeling fingers of the feeling levers with their respective trip. cams, the rear ends of the segmental notches 28 in the rocking frame engage with the cross bar 25 and depress the same, thereby moving the lifting bar 22 downwardly and at the same time pulling down the springs 27. This downward pull on these springs causes each spring to pull its respective gear segment down as far as possible, and after the downward movement of the segment has been arrested the continued downward movement of the cross bar 22, together with the rocking frames simply stretches these springs until this bar reaches the end of its downward movement. If a gear segment is locked in its uppermost or zero position, its spring 27 will After the rocking frames have reached the j end of their forward movement and the roller 73 has dropped 05 from the rear end of the concentric portion 69 of the cam 67, the gear segments are moved forwardly by hand operated mechanism into engagement with their respective dial pinions and are held in this position during the entire subsequent backa ward movement of the rocking frames, which is effected by hand operated mechanism. During the backward movement of the rocking frames, the gear segments are raised to their highest positions, while in engagement with the dial pinions by the rod 22 and connecting parts and turn the dials backwardly. At the end ofthe upward movement of the gear segments the latter are released, so as to permit them to move into their retracted position, out of engagement from the dial pinions. During this operation, those gear segments which are held or locked in their highest positions, by reasons of their dials being at zero, are simply moved forward at the end of the forward movement of the rocking frames, so as to engage with their respective dial pinions and are again moved backwardly out of engagement therefrom at the end of the forward movement of the rocking frames, without disturbing their respective dials. Each of the unlocked gear segments is moved downwardly a number of spaces corresponding to the number which is registered on its dial, the extent of this movement being controlled by the companion trip cam which arrests the forward movement of the key lever, through the medium of its feeling lever, when the proper stop shoulder of the key lever has been presented to the controlling, arm.

Upon now moving the gear segments forwardly in their variously depressed positions and then raising them to their highest position, each depressed gear segment will turn its dial backward the same number of spaces that the gear segment was depressed. Inasmuch as each gear segment was permitted to descend by its trip cam, feeling lever and key lever the same number of spaces as the number indicated on its dial, the gear segment subsequently moves upwardly the same number of spaces before reaching its highest position, thereby turning its dial backwardly the same number of spaces and restoring the same to zero. When all of the dials have been returned to zero, the shoulders 56 of all the trip arms engage with the lowest parts of all the trip cams 57. The cams 14 and 67 are provided with a longitudinal slit 74, (Fig. 18) so as to facilitate the manufacture of these parts. i r

The mechanism whereby the positions of the cams 14 and 67 are reversed preparatory to restoring the dials to zero is constructed as follows:

The cams 14 and 67 drop into their opera-- tive position by gravity. Each of these cams is provided in rear of its pivot with a tail 75 (Fig. 8) which is depressed when it is desired to lift the respective cam into its inoperative position.

76 is a shifting lever which is pivoted at its lower end and is normally turned so that its upper end is disengaged from the rear side of the tail on the cam 14, by a spring 7 7, as

shown in Figure 2. The member 7 6 projects in rear of the main frame .so as to' be accessible for manipulation. 78 is a shifting lever which is pivoted between its upper and lower arms and arranged with its upper arm in rear of the tail on thecam 67 and normally held in engagement therewith by a spring 79, as shown in Figure 8. 80 represents an elbow lever pivoted below the bottom of the keyboard, as represented in Figure 8. 81 represents a main line or cord which is connected the branch 83 connects with the shifting le-' ver 7 8below its pivot. 84 represents a total or shifting key having a depending stem which is guided in top and bottom of the keyboard and which bears with its lower end against the upper arm of the elbow lever 80. Upon depressing the key 84, the elbow lever 80 is turned, so as to draw the cords or lines 81, 82 and 83 forwardly, thereby moving the upper end of the shifting lever 76 into engagement with the tail of the cam 14 and lifting the same into an inoperative position, while the shifting lever 78 is moved rearwardly with its upper arm from the tail of the cam 67, thereby allowing-the latter to drop into its operative position. 1 Upon depressing the gear segments while the parts are in this shifted position, the segments move downwardly out of engagement with the dial pinions. After the gear segments have been depressed, they are moved forwardly into engagement with their respective dial pinions by an elbow lever 85'which is connected with its lower arm bya line or cord 86 to the rod or bar 7, as shown in Figure 8, or to one of the rock arms 8. The elbow lever is turned in the proper direction for this purposeby a shifting key 87 having a depending stem which is guided in the top and bottom of the key-board and which bears against the upper arm of the elbow lever 85. After the gear segments have been moved forwardly into engagement with the dial pinions, while in the depressed position, the gear segments are retained in forward position, and at the same time raised untilthey reach their uppermost position, whereby the dials are turned to zero. The shifting key 87 is now released which permitsthe spring 11 to move the gear segments rearwardly out of engagement with the dial pinions. The key 84 is also released, thereby permitting the shifting levers 76 and 78 to resume the positions shown in Figures 2 and 8, leaving the machine in position to resume adding. Each of the dials is held against turning while its companion sub total dial is being turned to zero by means of a detent pawl 103 which These springs are connected loosely at their rear ends to the rocksl1aft 9 and at their front ends to the pawl arms 105. During the forward movement of the gear segments preparatory to turning the dial pinions, the detent pawls are swung forwardly out of engagement with the dial pinions by means of two shifting rods 107 which are connected at their rear ends to opposite ends of the transverse rod 7 or some part moving there with and each of' which is provided at its front end with a fork or bifurcation 108, which engages with a pin or shoulder 109 on the pawl arm arranged on the adjacent side of the machine. As the gear segments move forward into engagement with the gear pinions the shifting rods 10? move the 'detent pawls 103 out of engagement with the dial pinions, and when the gear segments move backwardly the detent pawls are again engaged with the dial pinions by the springs 106.

Recording mechanism For the purpose of recording the numbers which are added together by the above described mechanism a recording mechanism is provided which is constructed as follows 140 represents a printing roller or platen which is arranged transversely in the upper,

rear part of the machine and under the lower side of which the sheet or other article is placed which receives the record. 141 represents a number of type segments which are arranged transversely side by side below the platen and which are pivoted at their front ends to the supporting bar 31 upon which the rear ends of the controlling arms 30 are pivoted. Each of these type segments is provided at its rear end with a segmental row of type carriers 142, which are capable of moving radially back and forth on the type segment.

Each of the type carriers is provided at its rear end with a type and is guided upon the type segment by means of screws or rivets 143 secured to the type carrier and arranged in radial slots 144 formed in the type segment, as shown in Figures 5 and 17. Each of the type carriers is held in its inward or retracted position by means of an S-shaped spring 145, which is arranged between the carrier and the type segment and is secured with one end to the carrier and with its other end to the type segment, Upon raising or lowering the type segment, any one of its type can be brought to the printing point or line, and upon striking the back or inner end of the type carrier, when the same is in line with the printing point, the type carrier will be driven outwardly and its type will produce an im pression on the sheet supported by the platen. After the carrier has received the blow for driving the same against the platen, the carrier is again quickly retracted to its innermost position by means of its sprin Each of the type segments is connected with one of the controlling arms, so that upon depressing a controlling arm and the registering gear segment connected therewith, the companion type segment will be raised and present one of its type'to the printing point.

For convenience in operating the machine, the keys are separated a considerable distance on the key-board and in order to produce a compact record, the printing segments are arranged closer together than the keys and the registering mechanism. In order to permit of this arrangement, each type segment and its corresponding controlling arm are connected by a connecting arm 146, as represented in Figures 1, 2 and 5. The connecting arms of the central controlling arms and type segments are comparatively straight, but the connecting arms of the outer type seg ments and controlling arms are arranged obliquely, the degree of this obliquity gradually increasing from the central type segments and controlling arms in opposite directions toward the outer type segments and controlling arms, as represented in Figure 1. The connecting arms 146 of the outer controlling arms are arranged in the spaces behind the upright parts and above the horizontal parts of the controlling arms, thereby permitting the inner controlling arms to move up and down without interfering with the connecting arms 146 of the outer controlling arms.

The types on each type segment are arranged to correspond with the teeth and numbers of its companion gear segment and registering dial, the zero type being at the upper ,end of the series and the progressively higher digits arranged in their order downwardly from the zero type. WVhen the registering gear segment is in its highest position, it presents its zero tooth to the dial plnion, and the type segment which at this time is in its lowest position presents its zero type to the printing point. Upon depressing a gear segment so as to present one of its higher teeth to the dial pinion, its companion type segment is raised proportionally and presents a corresponding higher numbered type to the printing point.

147 represents a number of hammers whereby the'type carriers are struck for driving the type against the platen. One of these hammers is arranged adjacent to each "type segment and is provided with a head which is arranged in front of the series of types and in line with the printing point of the platen. Upon shifting the type segment so as to br ng one or another of its type carriers to the printing line and then operating the hammer, the latter delivers a blow against the inner end of the particular carrier which is at the printing point and produces an impression of its type on the platen. The several hammers are pivoted on the transverse rod 12. arranged in rear of the segments; and each of the hammers is yieldingly held in its forward position by a spring 148 connected at its lower end to a cross bar 149 and atits upper end to a depending arm 150 on the hammer.

lVhile the drawings show a preferred means for operating said hammers, which means is fully described in the parent application, Serial No. 1,004, now Patent No. 1,429,201, any suitable means may be employed for this purpose and as the specific hammer operating mechanism forms no part of the invention claimed in this application, this mechanism is not described in detail. It will be sutlicient for the purposes of this application to state that the hammers are re- .tracted from the types and then released by pawls 153, Figure 2, which pawls are mounted on and'operable by a rod 151. The rod 151 is moved to operate the pawls, by means of a hooked member 168, pivoted on the rod 151 and normally engaging the bar 169, which latter is operated at each operation of the rocking frames and 29.

Suitable means are provided for automatically eii'ect-ing printing of zeros in the items.

Any suitable means for this purpose may be employed, that shown in the drawings being the preferred one which is fully described in the parent application, Serial No. 1,004, now Patent No. 1,429,201, to which reference is hereby made.

N on-pm'nt mechanism l/Vhen it is desired to only add the num bers and not record the same, the coupling hook 168 (Figs. 2 and 8) is raised with its notch out of engagement with the crossbar 169, which allows the rocking frames and connecting parts to move back and forth without affecting the hammer operating devices. from the cross bar by means of an elbow 171 secured to a transverse rock shaft 172. The lower arm of the elbow lever is connected with the shaft by a spring 173, whereby the lever and the shaft carrying the same are turned in the direction for disconnecting the upper arm of the. lever 17 from the hook 168 thereby permitting the latter to engage the bar 169. 174 represents an elbow lever arranged below the bottom of the key-board and connected by a line or cord 175 with its lower arm to the upper arm of the elbow lever 171 as represented in Figure 8. 176 represents a shifting key having a depending stem which is guided in the top and bottom of the key-board and which engages with its lower end against the upper arm of the elbow lever 174. Upon depressing this key the elbow lever 174 is turned in the direction for moving the rock arm 171 into engagement with the coupling hook 168 and disengaging the latter from the cross bar 169, thereby throwing the recording mechanism out of gear. Upon releasing the key 176, the rock arm 171 is per- The coupling hook is disengaged mitted to swing backwardly and allow the coupling hook to engage with the cross bar 169, thereby throwing the recording mechanism into gear. When the gear segments and the printing segments are thus operated relatively to the keys which, have'been depressed, the number represented by the depressed keys is registered and also recorded by the printing mechanism. The addition of further numbers proceeds in like manner the several numbers added successively by the registering mechanism but each number is printed individually by the recording mechanism.

When it is desired to print or record the total at the foot of the column of the numbers which have been printed, the operation is as ,feeling fingers forwardly into engagement with the respective cams 57 and at the same time each feeling, lever carries the adjacent key lever forwardly so that its particular stop shoulder 39 corresponding to the position of the trip cam 57 and its dial is moved into the path of the stop lug 34 of the controlling arm. After the key levers have been thus shifted forwardly into their respective positions corresponding with their dials, the continued forward movement of the rocking frames causes the gear segments while in a retracted position out of engagement with the dial pinions to be depressed until each segment is arrested by the engagement of the stop lug on its controlling arm with the respective stop shoulder of its key lever; where by each printing segment is raised so as to present the type carrier to the printing point which carries the type corresponding to the number registered on its companion dial. During the last part of the forward and downward rocking movement of the rocking frames the hammers are operated and the particular type at the printing line are im pressed on the platen. Upon now swinging the rocking frames backward the gear segments are raised while still in a retracted position out of engagement with their companion dial pinions, thereby permitting further numbersto be added to the total already registered on the dials. If, however, it is desired to turn the dials back to zero, after the total of the added numbers has been printed or recorded the gear segments, while in the retracted lower position which they occupy while printing the totals, are moved forwardly into engagement with their respective dial pinions by the depression of the key 87. Upon now moving the rocking frames baekwardly the gear segments are raised while in their forward position in engagement with their pinions, whereby each of the latter is turned backwardly and when the segments reach the end of their upward movement, the dials have been turned backwardly a number of spaces corresponding to the numberi on the dial, thereby turning all of the dials to zero.

l'Vord printing mechanism For the purpose of permitting words to be printed in front of the numbers which are added together the following mechanism is provided 1411 (Figs. 1,7,9 and 10) ,represents awordprinting segment which is mounted loosely on the rod 31 next to the highest number printing segment of the main number recording mechanirim. This segment is provided with a number of radially movable carriers 1420, which are constructed the same as the carriers of the number printing segments and each of which is provided on its face with a word type. The words of these types are selected according to the purpose or business for which the machine is to be used. For instance, if the machine isto be used in a bank, types representing the words Vouchers, Checks, Drafts, Bills, and similar words common to the banking business may be used. lVhen the machine is designed for use in a restaurant the words Soup, Vegetables, Meats, Dessert, and other words peculiar to this business may be used.

The position of the word type segment is controlled by a key lever 3600, Figure 7, which turns on the bar 35, is similar to the number key levers and is provided on the front side of its upper arm 3700 with a vertical series of differential stops or shoulders 3000 which are adapted to be engaged by the stop lug 3-100 of a controlling arm 3000; and lever 3000 is also provided with a locking stop or shoulder which is adapted to be engaged by a locking lug 3300 on the controlling arm, represented in Figure 7. The controlling arm 3000 is connected with the word printing segment by a connecting bar 1460. The stop shoulders on the upper arm of the word key lever are so arranged that upon swinging this lever so as to carry different shoulders into the path of the stop lug on the controlling arm, the latter will be arrested at different points in its downward or forward movement and the word printing segment connected therewith will be stopped at different points in its upward movement and present the particular word type to the printing point which corresponds with the shoulder or stop on the word key lever. The upward movement of the controlling arm 3000 is limited bv its rear locking lug 3300 engaging with the stop bar 32 which arrests the upward movement of the controlling arms 30 of the number registering and recording mechanism. The downward movement of the controlling arm 3000 and the simultaneous upward movement of the word printing segment is effected by a spring 215 which yieldingly connects this arm with the bar 25 to which the registering gear segments are connected.

216, Fig. 1, represents a row of word keys having depending stems which are guided in the top and bottom of the key-board and which engage against the upper side of the front arm 3000 of the word key lever at different distances from the fulcrum thereof. Upon depressing any of the word keys the word key lever will be turned the proper distance to bring its proper stop shoulder into the path of the stop lug of the companion controlling arm and arrest the word type segment during its upward movement, when the word type corresponding with the word of the depressed key has reached the print ing line. l-Vhen the respective word type is in this position the same is driven against the recording surface for producing an impression thereon, at the same time that the printing of the numbers by the numbering printing segments is effected. The word types are driven against the platen by a hammer operating mechanism which is constructed the same as the hammer operating devices of the number printing mechanism and the same letters of reference are therefore used to denote the same. The word key lever is yieldingly held in its normal position by a spring 000.

Auxiliary addin mechanism An auxiliary adding mechanism is provided which permits of registering and recording the individual or separate number of adding and recording operations which have been made by the main adding mechanism and also permits of effecting an addition of numbers different from the numbers which are added by the main adding mechanism.

This auxiliary adding mechanism is constructed as follows: I

2000 (Fig. 6) represents a number of auxiliary dials which are mounted on the left hand end of the dial shaft 5000 represents a number of auxiliary gear segments which are mounted on the transverse rod 7 and are adapted to engage with gear pinions 4100 on the auxiliary dials. Each gear segment 5000 is connected with a controlling arm 1,001 arranged adjacent to the gear segment by a latch or coupling which at times permits the segn'ients to move independently of the controlling arm. 3601 and 3701 represent auxiliary key levers which are operated by auxiliary keys 4101 (Fig. 1) and which control the'operation of the auxiliary registering and recording mechanism. The detail construction of the dials, gear se ments, printing segments, key levers and the parts co-opcrating therewith of the auxiliary registering and recording mechanism is substantially the same as the construction of the same parts anism, except as hereinafter distinguished,

and the same letters of reference are there-v fore employed to denote like parts in both of these sets of mechanisms.

In the drawings, two auxiliary key levers and three auxiliary dials are shown, which permits of registering and recording a total of 999, but additional registering and reco ding devices may be employed if it is de sired to increase the capacity of the machine.

In the auxiliary mechanism each of the higher gear segments 5000 is provided with a pivot latch identical inconstruction with the latches in the main registering mechanism. The lowest or primary gear segment of the auxiliary registering mechanlsm s provided with a movable latch 502 which is adapted to be en aged with or to be disen gaged from the upper guide" face on its companion controlling arm, but for the. purpose of the present application this latch might be dispensed with and the primary gear seg ment constructed the same as the primary gear segment of the main registering and re cording device.

1 In the auxiliary registering mechanism the gear segments are not provided with lower stops 46 like those of the gear segments of the main registering mechanism, which permits the auxiliary controlling arms to move downwardly when necessary independently of the auxiliary gear segments. The upward movement of the auxiliary gear segments is limited by stops 218 with which the upper ends of the gear segments engage. 219, represents a foot formed on the lower side of each controlling arm 3001 and adapted to engage with the lifting cross bar 22. However, for the purposes of the present application, the auxiliarv mechanism could be made exactly as the main number registering and recording mechanism is made.

For the purpose of effecting an ordinary addition of numbers on the auxiliary registering mechanism, the auxiliary key levers are shifted into the proper position by the depression of the keys 401 representing the numbers to be added and then the rocking segments 15 and 29 are turned forwardly. During the forward movement of the rocking frames the auxiliary gear segments are first moved into engagement with the auxiliary dial pinions by the cam 14 and then pulled down by the springs 27, and the controlling arms are also pulled down by the latches of the gear segments engaging with the controlli ng arms. The downward movement of the gear segments and controlling arms continues until the stops 34: of the controlling arms strike the shoulders 39 on the key levers which stand in the path of the stops 34. At the end of the forward movement of the rocking frames the gear segments are withdrawn from the dial pinions by the springs and during the subsequent backward movement of the rocking frames, the gear segments and controlling arms are raised by the cross bar 22 engaging with the gear segments and with the feet 219 of the arms. The carrying of numbers from the units dial to the tens dial and from the latter to the hundreds dial and the turning of the dial to zero is effected in the same manner as in the main registering mechanism.

By this organization of the machine, numbers such as sales or prices of goods can be added and recorded by the main registering mechanism, and other numbers such as the rebate on sales or discount on the prices of the goods, can be separately added and recorded by the auxiliary registering mechanism.

The key controlled devices whereby the parts of the main registering and recording mechanism are shifted into the proper position preparatory to registering and recording a number are distinct from the key controlled devices whereby the same effect is produced in the auxiliary registering and recording mechanism, but both sets of registering and recording mechanisms are operated simulta-' neously by the one'universal shifting mechanism for effecting the registration and record-' ing of the numbers which are represented by the different positions of both key controlled devices. 4

Keyboard mechanism word or other character are autoniatically locked in a depressed position until the adding or recording operation of the particular number, word or other character has been completed, and then the depressed keys are automatically released and permitted to be raised by their springs.

As shown in Figures 2, 6, 8, 11, 12, 13 and 14, the keys are held in a depressed position by a number 'of locking plates 327 one of which is arranged lengthwise on the left side of the stems of each row of keys. Eachof the locking plates is pivotedat its lower end to the top of the keyboard bottom, so as to swing transversely and is provided along its upper edge with a number of downwardly facing catches or shoulders 328 which are adapted to engage with upwardly facing locking shoulders 329 on the stems of the keys. Each of the keys is provided with a convex face below its locking shoulder, consisting of a lower rising portion 330 which inclines upwardly and laterally from the lower part of the key toward the adjacent locking plate, and an upper recedingportion 331 which inclines from the 0 upper end of the rising portion to the outer end of the locking shoulder 329 of the stem, as shown in Figures 12 and 13. Each locking plate is drawn yieldingly with its catches against the stems of the adjacent row of keys by a spring 332, as shown in Figure 13. The locking catches of the locking plates bear against the key stems below the convex faces

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