US1266660A - Calculating-machine. - Google Patents

Description

J. BR'ICKEN.

CALCULATING MACHINE- urucmopmzn mm. 24. ISH. nzuswsn act. 6. ms.

Patented May 21,1918.

5 SHEETSSHYEET I.

v J.BRIC KEN.

CALCULATING MACHINE. I APPLICATION FILED MAR. 24. l9l4- RENEWED OCT. 6. I916- 1 ,266,66(), Patented May 21,1918.

5 SHEETS-SHEET 3.

q 1. BRICKE N.

CALCULATING MACHINE-x nrucmoq FILED IAI. 24.1914. nzniwib OCT. 6. 1915. 1,266,660. Patented May 21, 1918.

v 5 SHEETS-SHEET 4. da Z6 1 7 J. BRICKEN.

CALCULATING MACHINE. APPLICATION FILED MAR-24. I9I4- RENEWED OCT. 6. 1916.

Patented May 21,1918.

5 SHEETS-SHEET 5- 62 n a 6/ m 6 an i 6 mm 6 67 766 57 7/ 72 74 7 Z 76 5; //9

UNITED STATES. PATENT OFF-ICE..- 1.

JOHN BBICKEN, OF CHICAGO ILLINOIS, ASSIGNOR TO THE WAHL COMPANY, WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE,

CALCULATING-MACHINE.

Application med latch 24, 1914, Serial No. 826,833.

To all whom it may concern:

Be it known that I, JOHN BRIGKEN, a subject of the Emperor of Russia, residing at on which I show, an application of my pres cut invention, is shown and describedin the patent issued to John C. Wahl, #893,719, dated July 21st, 1908.

One of the objects of my invention herein described is the automatic printing of totals seriatim, that is, automatically printing a total usual methodemployed in adding machines of printing all of the digits of a total simultaneously.

Another object of my invention is the automatic printing of a total-present in a calculating machine of the type described in the aforementioned patent to Wahl. These and further objects of my invention will be disclosed and referred to hereinafter in the following specification and claims.

I have shown my invention on a typewriting'calculating-machineof the class shown in the cited patent to Wahl'.

Referring to the figures illustrating my invention Y Figure 1' is a section on line 11 of Fig. 2,

Fig. 2is a front view of a typewriter and calculating machine,

Fig. 3 is a section on line 3-3 of Fig. 1, Fig. 4 is a section on 47-4 of Fig. 3, Fig. 5 is'a section on line 55 of Fig. 1 partly in plan,

Fig. .6 is a section on line 6-6 of Fig. 2, Fig. 7 is a section on line 7-7 of Fig. 6, Fig. 8 is a view along the line 8 8 of Fig. 6,. v Fig. 9 shows some of the mechanism shown in Fig. 1, in its alternative position,

Fig. 10 is a perspective view of certain mechanism cooperating with the totalizer and automatic key operating device of mypresent invention,

Fig. 11 is a View of one of the carrying gears of the totalizer showing the three short teeth, and

Specification; of Letters Patent.

A good example digit by digit in distinction to the Renewed October 6-, 19 16. Serial No. 124,204.

Fig. 12 is a View of the totalizer-from the right showing the relation of the totalizer side plates to. the carrying gear in the lowest decimal place thereon. -Before entering into a detailed description of my invention, I shall'givea general outline of the'theory of its operation- The calculating machine is provided with a totalizer which is adapted to receive numbersseriatim as these numbers may be set up on the. digit keys. This nism is .substantially similar to that shown in the cited patent to Wahl. The totalizer has in each decimal place thereof a movable part whose displacement from the zero posi tion represents the number insaid decimal place. Cooperating with the totalizer is a single set of feelers. These are thrown into contact with the movablemember of the t0- talizer at the proper time andas a result of such engagementone of the feelers is displaced. These feelers control a set -oflatches, each'connected to adigit key of the typewriter, including the zero key, and the latch corresponding to the displaced feeler is thrown into engagement with a Vibrating bar driven by a source of power such as an electric motor or other suitable means. As

artv of the mecha-- Patented May 21,1918.

the said bar vibrates it will engage with the particular latch which has been displaced and thereby operate the digit key of the typewriter. This operation will produce precisely the same effect as if the key were operated by hand. The typewriter carriage will escape so that the set of feelers before referred to will be in line with the next lower decimal place of the totalizer. The set of feelers will again be thrown into cooperation with the totalizer, and a latch corre-' sponding to the digit in that decimal place of the totalizer thrown into the path of the vibrating bar. A second key will then be operated by said bar, thus printing the second digit of the total. This operation will be repeated for each decimal place of the totalizer until the entire number'appearing in the totalizer has been printed. A lever determining that the totalizer shall be operated in subtraction is supposed to have been set before the beginning of the automatic extraction of the total. Consequently during the operation, the totalizer will be cleared. When the digit in the last decimal place has been printed, the automatic total patent to Wahl.

chine, I shall first describe each section separately and subsequently describe the woperation of the various portions of the machine.

The totalz'ecr and actuating mechanism.

The totalizer and actuating mechanism are substantially like those shown in the cited A set of digit keys 139 to 139 are mounted in a typewriter 16, and coperate with the usual printing mechanism l'Z, which is adapted to prlntnumbe'rs on a platen. The typewriter with which the calculating machine is shown is the .well known Remington. typewriter, which will be recognized from the outlines in Figs. 1 and.2. Each of the digit keys 130 to 139 inclusive is connected by a pull rod 19 to a fan 20 in the actuator. These fans of which there is one to each digit key, are rotatably mounted on .a shaft 21, rigid'in the frame work 22 of the ma chine' There is provided a master wheel '23, and master dog 24:, both of which are moved in consequence of the operation-of any digit key 130 to 139 in the manner described in the cited patent to Wahl, viz., the master wheel is rotated a number of steps depending upon the particular key operated, and prior to such rotation, the

master dog is rotated on its axis in a counter clockwise direction, (Fig. 6) thus unlockingthe chain of totalizer gears at the actuated point.

The totalizer is mounted on'a' truck 26 which moves step by step with the typewriter carriage as the latter escapes due to the operation of the digit keys. Numbers are thereby inserted into this totalizer by the master wheel serial/5m, beginning with the digit in the highest decimal place and progressing to the lowest as the totalizer escapes stepby step upon the operation of the keys.

.The totalize'r 25 is substantially like that shown in the cited patent to Wahl. "in it is provided. a set of carrying gears 26 provided with carrying teeth '27, and these gears are rotatably mounted on a shaft 29 rigid in the frame work of the totalizer. A set of transfer gears 29, mounted on a set of swinging arms 30 serve to transfer the tens at the proper time. These transfer gears 29 and the carrying gears 26 form normally a locked gear chain, which is unlocked at the actuated point bythe master dog 24.- lifting a swinging arm 30 prior to the rotation of the master wheel 23. The

- direction ofrotation of the master wheel rseaeeo.

patent, but from this point, my machine begins to differentiate therefrom.

Reference to Figs. 6 and 11 will show that the carrying gears 26 having thirty teeth and three carrying teeth 27, are provided with three short teeth. These teeth are not wholly cut away, but have simply the points removed, and their action with the transfer gears 29 and the idle gears 32,

serving to transmit the motion of said car rying gears to the number disks 33, is sub stantially the same as if the points of the teeth were present. The number disk 33 of any decimal place and the carrying gears 26 associated therewith are so meshed to gether that when a short tooth is in the position shown in Fig. 6, the number wheel associated with said wheel is in a position to exhibit the 0 through the window 34 in the casing 35 of the totalizer. In Fig. 6, T have placed a small 0 opposite this position of the short tooth and shall refer to .such position as the 0 position.

It is to be noted that in the Wahl totalizer there are two sets of transfer gears 29, a gear of each set being placed on alternate arms 30 as. disclosed in the cited patent to VVahl. This staggered construction makes it necessary to have two species of carrying gears 26 in my present invention, these species being difl'erent in the relation of the short teeth' to the carrying teeth 27 of said gears, the arrangement being such that when the carrying teeth of all the carrying gears 26 are in contact in the same direction with their associated transfer pinions 29, one of the short teeth on each carrying gear 26 will be in a position corresponding to the 0 posi- 1 tion of said gear. The feelers and latches connected therewith.

In the samevertical plane as the master wheel 23 is a set of feelers which I have numbered 40 to 49 inclusive. These feelers arerotatably mounted on three shafts 155,

a link numbered 80 to 89 inclusive to correspond tothe arms to which said links are attached. Each digit key has pivoted thereon a latch. These latches I have numbered 90 to 99 inclusive, the digit in the chain of mechanism from the carrying gear 26 up to and including the latch 90 shown in the perspective view of Fig. 10.

Each latch has in it a pin 100, which cooperates with a fork 101 in the end of its associated link 80 to 89. A set of tension springs 102 connects each of the latches 90 to 99 to its associated link 80 to 89. A set of springs 103 serve to hold the depending arms 70 to 79 in a position determined by a universal rod 104- which rod contacts with all of the depending arms 70 to 79.

At this oint, it should be noted that the feeler 40 or instanceis connected to the rock shaft 60 by the link 50 and on the rock shaft 60 is mounted the depending arm 70, which is connected by the link 80 to the latch 90, mounted on the 0 digit key. Similarly the feeler41 is connected by the link 51 to the rock shaft 61 on which is mounted the depending arm 71, controlling the link key.

81 associated with the latch 91 on the 1 digit This same system of reference numbers has been followed for all of the other digit keys so that the digits in. the units place of the numbers 50 to 99 both inclusive, will identify the particular digit with which such numbered part is associated.

Reference to Fig. 6, in which is shown a plan view of the carrying gears 26 in the lowest decimal place, shows that the position of the short tooth on said wheel is determined by the position of the number disk 33 in mesh with said wheel. The feeler 40 is opposite this 0 position of the short tooth. The feeler 41 is opposite the position immediately above the 0 position. The feeler 42 is opposite the next succeedingposition. The feeler 43 is at the extreme lower part, and this feeler will contact with the short tooth belongin to the next cycle of ten teeth. The fee ers 44, 45, 46, 47, 48 and 49 respectively, follow in the order given. An inspection of Fig. 6 will then clearly show that if the entire bank of 10 feelers is allowed to come into contact with the carry- -ment of the feelers with the gears 26 depends upon the position of the short tooth, and since, as has been before explained, the short tooth has a definite relation to the number disk 33 geared to the carrying gear 26, motion of all the feelers into mesh with said wheel will result in the displacement of is best a particular latch and this latch will correspond to the number exhibited by the number disk 33.

It will be remembered that each of the latches numbered 90 to 99 inclusive is associated with the particular digit key corresponding to the digit in the units place of the designated number of the latch. Therefore upon engaging all of the feelers with any carryin gear 26, the latch associated with the digit key corresponding to the position of sald ear will be displaced in ad- Vance of the ot er 9 latches. It is by means of this displacement that I am able to select the particular digit key which is to be operated.

Mechanism for engaging the feelers 40 to .49, inclusive, with the cawytng gears 26 of the totalizer.

v105, rigid on a shaft 106, pivoted in the frame work of the machine. At suitable times during the operation of the machine, the shaft 106 is rocked in a clockwise direction, Fig. 10, thereby withdrawing the universal rod 104 from the path of the depending arms to 79. This allows these arms to rotate in a counter clockwise direction (Fig. 10) under the influence of their respective springs 103, and through the linkage connecting said depending arms to the feelers 40 to 49, and bring all of said feelers in contact with the particular carrying gear 26 which may be in the plane of said feelers at that time.

Scarce of power for operating the keys.

In the previous description, I have followed themechanism through to the point where a latch associated with a particular digit key is displaced relative to the other latches to thereby determine what particular key shall be operated. I shall now describe the source of power for operating the keys following the displacement of said latch.

Attached .to the frame work 22 of the typewriter, I have shown a suitable source of power, which in my application is a continuously running electric motor 108. Of course any other suitable source of power, such as a continuously rotating shaft driven by a ,belt might be used. A power sh: ft 107 is rotatably mounted in the frame work of the machine, and on this shaft is loosely mounted a pulley 109, connected to the motor 108 by a belt 110. Slidably but nonrotatably mounted on the shaft 107 is a clutch 112, (best shown in Fig. 2) controlled by a handle 111. The clutch consists of the usual two engaging members, one of which is shifted by the handle 111, and I shall not at this place enter into a detailed description of it since there are many suitable clutches in the prior art, any one of which would answer the purpose of the particular form shown here. All that is necessary is that there be some means of connecting the pulley 109 to the power shaft 107.

Rigidly mounted on the power shaft 107 is an arm 113, on which is pivoted a pawl 114, which is held in engagement by a spring 115 to the disk 116 loosely mounted on the shaft 107. The disk 116 has a series of notches 117 into which the pawl 114 engages thereby transmitting the rotation of the power shaft 107 to the disk 116. In case the disk 116 should be at any tlme prevented from rotating the pawl 114 will ride out of the notches 115 and the shaft 107 may still rotate notwithstanding the fact that rotation of the disk 116 is prevented. The object of this slip clutch will be afterward explained.

Projecting from the disk 116 is a crank pin 118 on which is mounted a link 120 p1voted to an arm 121, rigid to a shaft 122, rotatably mounted in the frame work. Th1s linkage just described consists of the crank pin 118 on the disk 116 which in effect forms a crank arm on the shaft 107 the link 120 and the arm 121 form a well-known linkage serving to oscillate the arm 121'upon rotation of the shaft 107. Rigidly attached to the shaft 122 are a pair of arms 123, located at either end of said shaft, and these arms have mounted between them a rod 124 which serves to operate .the latches 90 to 99 inclusive. From the preceding it is apparent that rotation of the power shaft in case the clutch 112 is thrown in the position shown in Fig. 2, will result in a vertical oscillation of the rod 124, and in case any latch is in position to engage said rod 124 on the downward motion of the same, the digit key connected to said latch will be op erated.

I shall now describe the means by which the vertical oscillation of the rod 124 results in operation of the typewriter digit keys. Referring especially to Figs. 1 and 9, it will be noted that the latches 90 to 99 inclusive have formed in them at their upper ends, a recess 125. Since all the latches 90 .to 99 inclusive, are similar in shape and have the same action with the rod 124, I have numbered the latch shown in Fig. 9 as 90, and the following remarks will apply to any of the other nine latches of the set. In-

- spection of Fig. 9 will show that if when the rod 124 is in its uppermost position, the latch 90 be allowed to move from its dotted position to its full position, when the rod 124 descends said rod will engage the lower portion of the recess 125, depress the latch 90 and consequently the 0 digit key 130 to.

engages a link 127 pivoted to one of the arms 105. A. spring 119 connected to the arm 105 serves to hold said arm in a normal position determined by the contact of the universal rod 104 with the depending" arms 70 to 79, which in their turn are held in a normal position by the stay rod 128, rigid inv the frame work. It is to be noted that the spring 119 is stronger than all of the springs 103 combined, so that said spring 119 always holds the depending arms 7 0 to 79in contact with the stay rod 128 until such time as the universal rod 104 is removed by the action of the pin 126 on the link 127. 1

During the rotation of the crank pin 118 and consequent oscillation of the arm 121 ing-gear 26, which happens to be in the same plane as the feelers. According to the position of one of the short teeth on. said wheel, the feeler contacting with such short tooth will enter deeper than the balance and the particular latch associated with such feeler will move from the dotted line position shown in Fig. 9 to the full line position. At the time of the withdrawal of the universal rod 104, the rod 124 is in its uppermost position. Consequently any latch is free to move into the position shown in full lines in Fig. 9.

Continued rotation of the crank pin 118 results in a depressin of the rod 124 and the particular latch which is in engagement therewith. It also results in the restoring of the universal rod 104 to its normal osition and consequent disengagement o the nine non-actuated latches from the carrying gears 26. All of the latches then move to their normal position except the one which is in engagement with the rod 124. It is to be noted (Figs. 9 and 10) that the recess 125 has a projecting nose 129, which prevents the disengagement of the latch in contact with the rod 124 by reason of the tension of the spring102. Consequently such latch is not returned to its normal position when the rod 104 returns to its normal position, but is carried down with the rod 124 as the latter descends, owing to the continued rotation of the crank pin 118.

The downward motion of the latch just i key reaches its bottom position, the escape ment of the typewriter is actuated, and the carriage escapes to its next decimal place, the feelers, of course, at that time being held out of engagement with the totaliz'e'r gears by the universal rod 104. When the rod 124 has reached its bottom position it will, of course, make a slight pause while the crank pin 118 is .going over the deadcenter, but the digit key and the type bar connected therewith st1ll have velocity at this point, consequently, the downward motion of the digit key will ersist due to its momentum, andthe projectlng nose 129 will drop below the position of the rod 124. The latch will then be snapped back to its normal position relative to the link 80 by tension of the spring 102. After the crank pin 118 passes over the dead center, the rod 124 will start to rise. It will encounter a projectin lug 140 on the latch which was engaged t erewith. Each of the latches 90 to 99 has these lugs 140 on its upper portion, and the function of this lug is to insure. the digit ,keys

beingrestored to itsnormal position before the rod 124 again descends. Each of the digit keys 130 to 139 has a restoring s ring 141 tensioned between said key an the frame work, which spring tends to hold the digit key in its normal position. In case the digit key does not return to its normal position after having been operated by the rod 124, asfast as the rod 124 moves upwardly, the lug 140 serves to restore the digit key to its normal position upon the return movement of the said rod. I

The operation 0; the machine.

I have described in detail most of the mechanism necessary to carry out my invention. I will now describe the operation of the same, taking as'an example a definite number in the totalizer, and following the operation of the machine step by step during the automatic printing of such a numer. i a

Assume that the totalizer has a capacity of 999 999 99 and that the reading on the totalizerI-as a result of the prevlous calculation is 654 30 and that it is wished to print out this numberautomaticall by opcrating the digit keys aerz'atim. e will also assume that the handle 111 is in. its off position, thereby disconnecting the oscillating rod124 from the motor 108, and that the subtraction lever 31' is in the osition determining that the machine shal o erate' inaddition. The operation of the evice will be as follows I The operator first tabulates the carriage of the machine so that the master wheel engages. the carrying gear 26 in the decimal place of .the 'totalizer containi the first siglnificant figure, viz., 6, and t rows the su traction lever 31 into lts subtraction position. Thi being done, she throws the handle 111 into the on position. Neglecting for the moment the action of the universal cam 142, not previously referred to, operatively connected to the handle 111 by the link 143, the clutch 112 is engaged and the crank pin 118 starts to rotate thereby oscillating the rod 124. It is also assumed that the apparatus was started with the rod 124 in its uppermost position and'it will be described hereinafter howthe machine will alway stop with the saidrod 124 in this gosition. The first thing that ha pens a er the clutch is engaged is the cloc ise rotation of the rod 104 about its shaft 106, due

to the action of the link 127, (Figs. 1 and 10). All the feelers then are thrown into engagement with the gear 26 of the totalizer by means of the springs 103 attached to the depending arms 70 to 79. The feeler 46 encounters the short tooth, and all the other feelers encounter long teeth. Conseipllently feeler 46 enters the wheel deeper t an any 'of the others and through the intermediation of the connecting link 56, the rock shaft 66, the depending arm 7 6,the link 86, the latch 96 attached to the 6 key of the typewriter, is thrown in the path of the then descending rod 124. This position of the latch 96 would correspond-to the full line position of the latch 90 shown in Fig. 9. Immediately after the latch 96 is engaged' by the rod 124, the continued rotation. of the crank pin 118 permits the unlversal rod 104 to rock about its shaft 106 under the tension of the spring 119 and I thereby restores all of the depending arms and as said crank pin is passing over the dead center, the continued downward motion of the 6 key prints a '6 on the platen, subtracts a 6 from the totalizer and unhooks the latch 96 from the rod 124. During this downward stroke of the 6 ke it contacts with a universal bar 144 exten mg under all of the typewriter keys, whlchbar is connected by. a link 145 to the rock shaft 146 pivoted in the frame work of the machine. An arm 147 rigid with the rock shaft 146 isconnected by a link 148 to the usual typewriter escapement mechanism 149. By means of the connections 144 to 149 just described, the typewriter carnage five spaces angularly disp aced from itsO i The upstroke of the rod 124 then position is then in. engagement with the master wheel and in the plane of the feelers.

As a result of the operations just described, a 6 has been printed on the work sheet and a 6 has been subtracted from the totalizer thereby restoring the gear 26 which was angularly displaced six spaces to its 0 position, and the carriage has escaped so that the master wheel is in engagement with the gear 26 hearing the next digit of the total, viz., that displaced five spaces.

Continued rotation of the crank pin 118 again releases the feelers 40 to 49 by withdrawing the rod 104 out of the path of the depending arms to 79 and since the carrying gear 26 at that time in the plane of the feelers has an angular displacement of five spaces from the 0 position, the feeler 45 will contact with a short tooth, and as described in the previous paragraph the latch 95 will be thrown into a position to engage the rod 124 upon the next descent of said rod. Continued rotation of the crank pin 118 permits the spring 119 to restore the universal rod 104 to its normal position, thereby withdrawing the feelers from contact with the carrying gear 28. The rotation also results in a descent of the rod 124, carrying with it the latch 95 which is in engagement therewith. As before described, the depression of this latch 95 result in the printing of a 5 on the work sheet, subtracting 5 from the totalizer and the escapement of the carriage one step. The master wheel is now in engagement with the carrying gear 26, which is angularly displaced four spaces from its normal position-and this gear is, of course, inthe same plane'as the feelers 40 to 49.

Continued rotation of the crank pin 118 now prints a 4 on the work sheet and restores the carrying gear 26 to its normal position as previously described, the only difference being that it is the latch 94 and the digit key 134 which are actuated during this rotation of the crank pin 118. As a re? sult of the printing of the 4, the carriage has escaped to the position where the master Wheel is in engagement with the carrying gear 26 in a decimal or pointing ofi space of the totalizer, lhis case brings in a few new considerations which will now be taken up. l Vhen the totalizer is in a pointing ofi space, it is desirable to have no typewriter key operated at all since it is not wished to print anything in this space. The Wahl totalizers are usually made with the carrying gear 26 in a pointing 03 space rigid with the carrying gear of the next lower order and the transfer gear 29 connecting these two gears 26 is of course omitted. In my present invention, the gear 26 in the decimal space has no short teeth. All of the teeth are of the full length. Consequently ifthe feelers 46 be thrown against such a gear incense none of them will be displaced and none of the latches to 99 will be thrown into a position to be engaged by the rod 124. Therefore no typewriter key will be operated on the descent of the rod 124 when the totaL' izer stands in the pointing oil" space. However, it is necessary to have the carriage escape due to this oscillation of the rod 124. To this end, I have provided a projection 150 on the rock shaft 146' and have placed the projection 151 rigid with the shaft 122 and in a suitable position to engage the projection 150 and operate the typewriter escapement independently of the universal bar 144. l

The universal bar 144 is unnecessary to the operation of the typewriter escapement I during the automatic printing of a digit. However, it must be remembered during the manual insertion of numbers by the digit keys, the rod 124 is not oscillating, but is stationary, therefore the universal bar 144 is required to operate the typewriter escapement at that time. Its presence during theautomatic operation of the digit keys does not interfere withvthe operation of the escapement by means of the lugs 150 and 151.

As a result of the oscillation of the rod 124 crank pin 118, as before, throws the feelers 40 to 49 into contact with this carrying gear 26, the feeler 43, hy reason of encountering a short tooth, throws its associated latch 93 into a position to engage the rod 124 during the descent ofsaid rod. The feelers 40 to 49 are thrown out of contact with the carrying gear 26 by reason or the return of the universal rod 124 to its normal position, all of the latches 90 to 99, with the exception of the latch 93 engaged with the rod 124, are restored to their normal position, and the descent of the rod 124 depresses the latch 43, and with it the digit key 133 to which said latch is attached. The operation of the digit key 133 results in the printing of a 3 on the work sheet, restoring the carrying gear 26, which was angnlarly displaced three spaces, to its normal position, and the escape of the carriage to the last decimal place of the totalizer;

When the feelers are thrown in'a position to engage the carrying gear 26 in the lowest decimal place of the totali'zer, the feeler 40 encounters the short tooth, consequently the latch 90 is thrown into a position to engage the rod 124 on its descent, and the 0 key of the typewriter is operated. This results in the printing of the last digit of the total,

. viz.,0, and the operation is complete as for as the printing of the total is concerned, so that there but now remains to describe-how the mechanism is brought into its position of plate of the totalizer. The, Side plate 153 to the right of the gear 26 1 of lowest order is out below the level on the short teeth ofsaid gear (Fig.12). Consequently when the feelers are thrown toward the totalizer due to the withdrawing of the universal rod 104, a

all of the latches 90 to 99 are thrown into a position to engage the rod 124. When the latter descends it consequently tries to operate all of the digit keys of the actuator at the same time. Since the Wahl actuator is provided with a single key mechanisnn'that is,-a mechanism which prevents the operating of more'than one digit key at any one time, the descent of the rod 124 is positively prevented by the said single key mechanism. Consequently the rotation of the crank pin 118 is prevented and the pawl 114 begins to slip over the notches 117 in the disk 116. This slippage results in a rattling noise, thereby notifying the operator, and calling her attention to the fact that the automatic printing of the total has been completed. The operator then throws the handle 111 to its off position..disconnecting the clutch and simultaneously operating the restorer cam 142. g

In order to avoid complicating the description, I have, up to this point, omitted any description of the said restorer cam. It consists of a universal bar pivoted in the frame Work and having a projection 152 adapted to contact with all the latches 90 to 99, (Figs. 1 and 10). When the bar is thrown into its dotted line position, shown in Fig. 1, all the latches 90 to 99 are held by the projection-152 out of the path of the rod 124. It will be remembered that this rod 124 was brought to rest in its upper-' most position at the time the slip clutch connecting the crank pin 118 with the power shaft 107 began to yield, so consequently the parts are now in a position to automatically print a new total when the same has been accumulated in the totalizer by the manual operation of the digit keys 130 to 139.

Having now described the construction ent device, I have provided a source of power and means to connect .said source of present specification,

It will be observed thatin my prespower to the automatic total printing de-.

vice, and automatically disconnect said source of ower as an incident of the completion of the printing of said total;

I also wish to point out that .I consider I the particular mechanism comprising a single set of feelers adapted to cooperate with the totalizer in successive digit' places of great advantage. By means of these feelers in connection with the device of pro- 'viding the short teeth in the totalizer gears themselves, I am enabled to" work directly from the totalizer .without the addition.

thereto of locating mechanism such as separate cams and their associating gearing whichwould complicate the totalizer mechanism itself.

As an incidental advantage of the con-- struction of the above mentioned machine, I call attentionto the extreme simplicity of .the device for taking care of'the pointing Attention is directed tothe provision ofthe slip clutch consisting of parts 113 to.

117 inclusive. This clutch, besides render ing the source of power operating the automatic total printing inefiective after the completion of a total printing operat1on,.

will also give an audible indication to the operator'that the auotmatic printing of the total has been completed.

It is also to be noted'that it is not at all necessary to the operation otmy device that I subtract the total from the totalizer as an incident to the printing of said total. As is wel1-known,'the Wahl machine is provided with a. so-called disconnect handle,

the object of which is to disconnect theactuator from the digit keys. If this handle is thrown to its disconnect position before starting the operation of printing a total, it is obvious that the-totalizer gears will not be rotated at all during the printing of said total, and I am therefore enabled to' print a total and 'leaveth e same unaltered in the totalizer, thus automatically printing out sub-totals during the course of a computation.

I do not wish to be confined in my, 1nvention to its application disclosed inthis viz., to the calculating machine of Wahls; It is obviouszthat the alphabetical printing features of the'Wahl calculating machine are by no means necessary to the operation of my present 1nvention, and that it maybe used toadvantage in non-alphabetical printing adding machines.

In typewriters like the Blickensderfer, for instance, the operation of the key levers determines the position of a wheel on which the type are mounted and continues. oper ation of one of these keys prints the selected character ()bviously my invention can be applied; to a type writem of this class III- stead of being applied to the type bar machine clisclosed in this application, I consioler the application. of my invention to e machine printing by a Wheel to. be the equiv alent o-fmy present iisclosure= Many changes and variations may be made in the above described arrangement Without departing. from the spirit of my invention. I have illustrated it in its preferred form but those skilled in the art will have no diificulty in adapting my inprinting of said total 2. In a calculating machine the combination of: a set of totalizer gears; a set of feelers adaptecl to cooperate scmctim with said gears; and means associates with saiol gears determining a clififerential motion of sai i feelers .3 In an automatic total printing iievice; e totalizer; printing mechanism; automatic means to operate tlie same; and; a set cf feelers adapted to cooperate with saioltotalizer in all of decimal places sezccitm; and

thereby initiate the automatic operaticn of saiol printing device as determinecl by a particular one of said feelers: 1

4. In, a calculating-machine the combine tiou of: a set of tctalizer gears; a set of feelers aclaptei to cooperatewith saiel totalizer gears serttiim; a set ofdigit key a set of latches associates. with saicl' eigit keys; and means to automatically opesate any 0? said latches upon displacement of the same:

5. In a calculating machine the combinetion of e set of displaceable elements which may be displaced to represent a number: a set of feelers adapted to coopeiate Witli said displaceable elements eerctim; a set of fiigit keys; and means operating saitl igit keys satectim in a seguencedetermined by the position of sairl mlisplaceable elements.

(ii In a calculating machine the combinetlon of: printing mechanism; automatic means to operate the same; a; set of cisplacea-lcle elements. ale-pried to represent a number by their iiis iplezcemeut said elements beings arranges ic-grcups; deter mining mews cooperating sccicfim'. with iecc ecc -meens rendering saicl printing mechanism inoperative when said determining means cooperates in a pointing ofi? space,

calculating machine the combination of: an automatic total printing device;

a source of pews; and a slip clutch con- 7 nectiug saiclscui'ce of power auol automatic total crintiug oievic'ee 8U a calculating machine the combine tiou oi: automatic total-printing device; a source ot'poWe-r; a slip clutch connecting saiol source of power to saiol automatic total printing device; and means to lock saial automatic total pcinting device upon the completion of its operation ami thereby cause the slippage of saiol clutch.-

9 "in a calculating machine the combination of a totalizer gear having a short tooth, a set of feelers adapteoi to be thrown into contact with saiol gear a set oif type bars operating means for saicl type bats,- and; mes-31s associated with. said set of feelers to determine the operation of the type bar selectefl by the one cl saicl feelers saiei short tee-ti 1Q, lira calculating machine, the combination oi a set of tctalicer gears each of which utaius it short teeth, a set of feelers adlapttc engage ccitaztm with saiol e set of tyjce operatingmeans for saisi type bass, anti connections between said: set of feelers and type hats whereby said opcratiug means operates a type bar as detemiineoi by the position of saitl short tooth on totalizer gee}: eugegetl by saicl feelers:

EL 1513 a calculating machine, the combinatiouof totelizes gear a set of feelers aclapteel: to coiipei ate eecicfiim with saio; gears amt.

a short tooth on some of said gears tc letermine the @ifi'etential motion of Sitliii feelers. 1% lo a calculating machine the combine ticu of a set oi totalizer gears, a set of i eelcte' edaptezl to cooperate sccicfim with semi geere saiii feelers being normally out of engsgiemcnt with saifi gears a short toothos scme cf semi gears to cletermme e cuttereutial motion of ease feelers. anal means to automatically bringsaidi feelers into contact with. one of saiol gee-ts au withdrew saitl feelers subsequent to the automatic determinaticn by said feelers of the position of sai short teeth 13. In a calculating machine, the ccmbiuaticu of a totalizer, a set of type loses, a latch associated with each cf saidtype bacaoommen operating means for saicl type bars anal a set of feelets to automatically iietermine the (iiSPlfiGGHN-Efifi of a latch corresponoling to the position of a geeeiu said totalizer.

M. in a calculating machine, the combine tion of a totalizer, a set of type bars each ct scitii liars leaving e latch pivotcdl thereon a common operating means for saidl type bars, and a setiof feelers to automatically.

determine the displacement of a latch corresponding to the position of a gear in said totalizer. A

15. In a calculating machine, the combination of a totalizer, a set of type bars, each of said .type' bars having. a latch pivoted 4 thereon, an oscillating bar adapted to engage in said latches and thereby'operate said type. bars, and a set of feelers to automatically determine the displacement of a latch corresponding to the position of a gear in said totalizer into the path of said oscillating bar.

16; In a calculating machine, the combination of a totalizer, a set of type bars, each of said bars having a latch pivoted thereon,

an oscillating bar adapted to engage said latches and thereby operate any of said type bars, a set of feelers cooperating with said totalizer to automatically determine the-displacement of a particular latch into the path of said oscillating bar, and means to bring said feelers intocooperation with said total- .izer in each decimal place thereof seriatim.

17 In a calculating machine, the combination of a totalizer, aset of feelers, adapted to cooperate with said totalizer and pivoted in staggered arrangement, said feelers having the parts which contact with said totalizer brought into 'a single plane.,

18. In a calculating machine, the combination of a set of feelers, a set of type bars, power-operating means for said type bars, a set of latches, each latch being pivoted to a type bar, a spring normally holding each latch out of the path of the operating means and a set of links connecting said feelers I and said latches whereby a displacement of any of said feelers will throw'its associated latch into the path of the operating means.

19. In a calculating machine, the combination of a totalizer, a set of feelers adapted to cooperate therewith, elastic means tending to bring said feelers into contact with said totalizer, and a universal bar adapted to hold said feelers out of contact with said totalizer.

20. In a calculating machine, the combination of a totalizer, a set of feelers adapted bring said feelers into contact with said totalizer, a universal bar adaptedto hold said feelers out of contact with said totalizer, and automatic means to operate said universal bar.

In witness whereof I have hereunto subscribed my name in presence of two witnesses.

' 7 JOHN BRICKEN. Witnesses:

MINNIE Bmonnn,

Armrrrrn Vmnon.

to cooperate therewith, elastic means 130

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