US836130A

US836130A - Adding-machine.

Info

Publication number: US836130A
Application number: US19765004A
Authority: US
Inventors: Charles N Mcfarland
Original assignee: Burroughs Adding Machine Co
Current assignee: Unisys Corp
Priority date: 1904-03-11
Filing date: 1904-03-11
Publication date: 1906-11-20
Anticipated expiration: 1923-11-20

Description

No. 836,130. PATENTED NOV 28, 1906. 0. N. McPARLANDQ ADDING MACHINE.

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UNITED STATES PATENT OFFICE.

CHARLES MCFARLAND, OF DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO BURROUGHS ADDING MACHINE COMPANY, OF DE- TROIT, MICHIGAN, A COR-PORAHON OF MICHIGAN.

ADDING-MACHINE.

Patented Nov. 20, 1906.

Application filed Earth 11, 1904. gerisl 150. 197,850-

To ail whom [it may concern.-

Be it known that I, (Julianne N. Mol na LAND, a citizen of the United States, residing at Detroit, W'ayne county, Michigan, have invented certain new and useful im rovements in Adding-Machines, of Whielrt e following is a specification.

My invention relates more particularly to improvements upon What is commonly known as the Burroughs adding-machine, illustrated and described in various Letters Patent of the United States granted to illiam S. Burroughs, of which it will suilice to refer to Nos. 504,963 and 565,078, dated September 12, 1893; but it is applicable in its essential features to other addingma chines of a similar character or intended for asirnilar urpose.

In mac ines of this character it is essential that at the beginning of operations the machine shall be clear'i. a, that the addingwheels shall have nothing added upon them and shall stand at zero or initial position, so that when a list of individual items is printed and added and the machine then operated to print the total of such list the proper amount of such total will be printed and not have in cluded in it any amount standing upon the ad d in g-wheels at the beginning of operations. In the ordinary use of machines of this char acter the printin of a total clears the machine or returns the adding wheels to zero or initial position, and it is therefore the practice at the beginning of operations to operate the machine in the manner to print a total in order to insure that the machine is clear be fore heginnin the printing and addition of the indlvidua items to be listed. in these machines as heretofore constructed if the machine is operated in a manner to print a total when the adding-wheels are already at zero or initial .osition nothing will be printed upon the s set of paper, and there will, therefore, be nothing u on such paper to indicate whether or not t e machine was cleared at the beginning of operations.

The object of my invention 1s to provide means for the rintmg of a character or characters for indlcating the fact that the machine has been cleared, so that if such character should appear at the head of a column 'or list of items or amounts the operator is when the listing of such items was begun. The character or characters may be any desi nation such as a cipher or ciphers, and in the present instance I have adopted the latter as the indicating character or characters, for the reason that I am thereb enabled without providing an extra type-p ate or the like to utilize the regular rintmg mechanism of the machine, each of W ose levers or typearms are provided with type bearing the dig its 1 to 9 and also 0. In the pres ent instance the means for so printing the indicating character or characters are under the control of the operator through the medium, as shown, of a special key and of the adjusting means for the clearin mechanism of the machine, with the resu t that such last-named means not only adjusts the parts for a clearing operation of the machine, but by the same adjustment provides for a charactor or characters being printed to indicate the fact that the machine has been cleared. In the present instance the arrangement is such that the printing mechanism associated with all of the type-arms is actuated to so indicate that the machine has been cleared, with the result that a horizontal row oi oiphers is printed in the clearing operation of the machine. However, this is not essential and the number of clear characters may be fvaried considerably. Furthermore, the in "vention is not limited to the employment of the cipher type of the regular type-arms for this urpose, but other 'instrumentalities may e employed to record the clear condition of the machine.

In the drawings, Figure 1 is a plan view of a Burroughs adding-machine embodying my improvements, a part of the machine-case being broken away to expose the type plates and levers Fig, 2, a section taken on the line 2 2 of Fig. 1 looking in the direction of the arrow; Fig. 3, a detail view of the pevvls and latches which trip the type-hammers and of the additional pawl and latch provided by me, and Fig. 4 an example of printing done by the machine.

Inasmuch as the Burroughs adding-machine is not only Well known, but also dethereby inform ed that the machine was clear ISO scribed in the prior Letters Patent aforesaid, and as my improvements comprise an attachment thereto for the purposes explained, have herein shown only those parts of i'nechanisms of such machine which are directly concerned or associated with the oper ation of my improvements.

The machine herein shown is of the multiple-key-bank type having a keyboard provided with a plurality of rows of keys 22], extending from front to rear of the machine, the nine keys in each row representing the nine digits and the respective rows representing different denominations increasing from right to left.

The plurality of levers B corresponding in their number with the rows of keys are hung upon a rock-shaft 600, Fig. 2, and are each provided with a downwardly and forwardly extending arm 611, operatively connected with a gear-toothed rack 610, whose movements are controlled and determined by the rods 270, operated and set by the keys 221. The rearwardly-extending and sector-shaped arms 611 of the levers carry at their rear ends the usual typeplates 618, whose type are forced against the paper arranged on the platen or paper-roller 619 by the action of the strikers or hammers 715 when released or tripped in the wellknown way. The strikers are fulcrumed near their lower ends upon a rod 701 and provided with curved slots 10, in which travel actuating-studs 741, carried by the curved levers 716, fulcrumed on a rod 702. The upper ends of the levers 716,which carry the studs 741, are rearwardly springpressed, but restrained against such spring tension. by the engagement of their upper ends by latches 717, fulcruined upon the rod 700. These latches are adapted to be tripped by the tripping-pawls 718, hung 011 a rod 704,which is supported between the upper ends of parallel side arms 711, secured at their lower ends to a rock-shaft 703. These latches and pawls are precisely the same in operation as those illustrated in Fig. 3 of said Burroughs patent, No. 505,078, and are identically the same in construction as the extra latch and awl marked herein 717 and 718*, respective y, and forming part of my attachment hereinafter described. and which in Fig. 2 of the present drawings hide the other latches and pawls, the latter, however, ape pearing in Fig. 3.

The rock-shaft 703 and consequently the associated parts described are operated in the well-known manner by the operating-handle 367, at the end of whose forward movement the arms 711 and rod 7 04 are rocked forward, with the result that the rearward ends of the tripping-pawls (except the one or more corresponding to any particular row or rows of keys operated or set) will be rocked upward by contact of their forward ends against the sloping shoulders 611 of the non-operated levers B, so that such particular pawls will not engage the shoulders on the upper edge of their respective latches, but will pass thereabove. llowever, with respect to the operated levers B the pawls corresponding therewith will not be rocked because of the removal of the interfering shoulders 61 1", with. the result that such particular pawls will engage the shoulders on the edges of their respective latches and rock the latter in such manner as to release their levers 716, whose springs 780 will now throw such levers rearwardly and. thereby throw their strikers 715 against the particular type-plates which are at that time positioned. in line between them and the platen-roller 619.

In the Burroughs adding-machine as manufactured and as illustrated, particularly in Burroughs patent, No. 505,078, provision is made for tripping the latches 718 successively from left to rigl1tthat is, from the higher to the lower denominations-so that the machine will be caused to print a series of ciphers to the right of any digit, except, of course, those in the first row on the righthand side. To this end the lower forward. end of each latch (with the exception of the outermost one on the right) has a tail or lug d, Fig. 3, projecting in the path of movement of the heel of its next adjacent latch on the right, so that the trip ing of one latch causes a tripping of all 0 them successively, the first character printed being a digit corresponding in value to that represented by the particular digit-key operated and the remaining characters following successively to the right and of decreasing denomination being all ciphers.

Each lever B is held in the normal position (shown in Fig. 2) by a latch 415, controlled by the corres onding rows of keys in the key board. of t e machine, and when any key in any row is depressed the latch of the corresponding lever is tripped and the front end of the lever and the rack 610, carried by it, are released, so that they may (later) swing downward until arrested by a stop projected into the path of one of the moving parts by the operated key. The levers B do not move immediately upon the tripping of their latches by the operated keys, but only upon the subsequent movement of the operatmghandle 367, Fig. 1. This handle is secured upon the projecting right-hand end of a stub rock-shaft 367, journaled in the right-hand side of the framework of the machine. This rock-shaft is connected with the rockshaft 600 by a train of mechanism not necessary to be here illustrated or described, whereby when the shaft 367 is rocked by pulling forward the o crating-handle 367 the shaft 600 will be roc ed in the same direction. Fast upon the rock-shaft 600, at opposite sides of the machine, Fig. 2, are two downwardly and forwardly extending levers 613, which are LII connected beneath the front ends of the levers 611 by a cross-bar 617, whose opposite ends extend upward along the sides of the outside levers 611. The operating handie and parts moved by it are yieidingly heid in and returned to normal osition by suitable sprin s, so that when t e operating-handle is pu ed forward the frame com osed of levers 513 and cross-bar 617 wil he swung downward and rearward, and when the operating handle is released said frame will he swung forward and upward again to normal osition. This frame constitutes the restormg or resetting frame for the levers 13, its downward and rearward movement at the operation of the handle permitting such levers B as have been released by the trip ing of their latches to swin downward unti arrested by the stops of t e operated keys, as heretofore explained, and the return forward and upward movement of the frame serving to restore such levers to normal position upon the release and return of the operatinghandle.

If the racks 610 of the levers B remained in mesh with the pinions 916 of the addingwheels during the downward movement of the racks, at the forward movement of the opprating-handle the pinions and addingw eels would be turned distances corresponding to the values of the operated keys. In the present instance, however, the pinions 916 are swung forward out of gear with the racks 610 at the forward .movement of the operating-handle and downward-movement of the released racks, so thatthey are not turned by the racks during the downward movement of the latter; but at the return upward movement of the parts the pinions are swung rearward into gear with the racks and turned by the latter distances corresponding to the previous downward movement of the racks. This is accomplished by mounting the supporting-shaft 955 of the pinions 916 in a swmgindg frame composed of two side arms 0, locate at opposite sides of the machine and fast u on the opposite sides of a rock-shaft 900. he up er end of one of these arms C is bifurcate as shown in Fig. 2, and cooperates with a etc 205, which limits the forward and backwar movement of the rockin frame carryin the inions. This rocking ame is operate for t e purpose mentioned in the followin manner and y the following means: Pivots ly supported upon a stud 941, projeetin inward from the lefthand-side frame of t e machine, is a" three-armed lever 913, whose vertically-dc pending arm has pivoted to its lower end the rear end of a forwardly-extending arm 914, which is supported near its forward end by a long link 911, depending from a stud upon the front end of a bell-crank 227, fulcrumed upon the framework of the machine at 204 and having at its forward end an upwardlyextendi stem carry-in a fin er iece 265. This heil crank 227 and its stein a rid fingerbutton 265 constitute the total-key of the machine, which is yieldingly held in and returned to its normal osition, Fig. 2, by

springs acting upon ot er parts of the mait and not necessary It suffices for pres- 0 'ie connected with to be referred to here.

ent urposes to say that the upper end of V the ink 911 is supported by the key or hellcrank 22? and that the lower end of the link is pivoted to and supports the forward end of the arm 914. At its front end this arm 914 is divided into two diverging

arms

914 and 914*, the former of which extends upward immediately adjacent the side arm (1' of the rocking frame carrying the train of pinions and is provided with a notch engagmg a stud 958 upon said side arm. Under this arrangement of parts it will be understood that if the arm 914 be swun bodily forward by forward movement of t e lower end of the vertical arm of the lever 913 and lower end of the link 911 it will force forward the rocking frame carrying-the pinions and disengage them from the racks 610. This movement of the parts is accomplished at the forward movement of the operating-handie by the following means:

Journaled in the lower middle part of the machine is a rock-shaft 800, connected with the rook-shaft .367, which carries the operating-h'andie in such manner that the forward movement of the handle rocks the shaft 800 haekward. Fast upon the shaft 800 is a three-armed lever 813, whose upwardly and forwardly extending arm 813 carries a piv oted'wiper block or plate-S21, adapted to cooperate with studs 963 and Q81 upon the backwardly and forwardly extending arms of the threearmed lever 913. A contractile spring 883, connected by a rod or wire to the lower end of the pivoted plate 821', tends to swing said plate mto-alinement with the levar-arm 813 uponiwhich the plate is pivoted and in the osition of the parts shown in Fig. 2 holds t e upper end of said plate against the rear side of the stud 961. When the operating-handle is ulled forward and the shaft 800 thereby roc ed in the direction of the arrow, theupward and rearward move 7 ment of theiever-arrn813 will engage one of the shoulders of the pivoted plate 821 with the stud 961 of the three-armed lever 913, thereby forcing upward the forward arm of said lever and swm ing forward its depending vertical arm, w ich latter will force forweird the am 914 and cause its upwardly and forwardly extending front arm 914, engaging the stud 958,'to swing forward the rocking frame C, carrying the pinions 916 and disengage the latter from the racks 610, so that the racks may swing downward without turningthe pinions.

The operations thus described due to the forward movement of the operating-handle will have swung the lever-arm 813 and its ivoted plate 821 rearward into proximity with the stud 961 on the rearwardlyproject ing arm of the lever 913, and at the end of the forward movement of the operating-handle the pivoted plate 821 will stand in substantially the same relation to the stud 961 that it occupies in respect to the stud 961 in Fig. 2, its upper end bea ring against the forward side of the stud and the plate itself being rocked upon the lever-arm 813 to a posit ion opposite that occupied by it in Fig. 2. At the return or backward movement of the o crating-handle the rock-shaft 800 will re rocked forward to normal position, and as the lever-arm 81.3 swings forward the rear shoulder upon the pivoted plate 821 will engage the stud 961 of the lever 913 and force the rcarwardly-projecting arm of said lever upward, thereby swinging its vertieallydepending arm rearward and drawing the arm 914 backward to normal position, and in this backward movement the arm 914 will carry the rocking frame C with it, owing to the engagement of the notched end of the arm 914 with the stud 958 upon the frame, thereby rengaging the pinions 916 with the racks 610 at the beginning of the return movement of the operatinghandle, so that as the levers 611, carrying the racks, are returned to normal position by the restoring-frame 613 617 the pinions and adding-wheels will be turned distances corresponding to the previous downward movements of the respective racks.

It will be understood that at the end of the forward movement of the operating-handle and of the downward movements of the respective racks which have been released by the operations of the keys in the rows corres onding to them the type-plates carried by the rear ends of the levers B will have been swung upward into positions to present at the printing-line immediately in front of the platen 619 the respective types corresponding to the values of the operated keys, and while the parts are in such position at the end of the forward movement of the operatinghandle those types are forced rearward against the platen by means of strikers or hammers hereinafter described to effect the printing of the amount represented by the operated keys, an inked ribbon being passed between the types and the paper upon the platen-roll.

Under the operation above described merely the amount of the individual item represented by the operated keys will be printed upon the st rip or sheet of paper, and it will be next in order to explain how the total of all of the amounts or items accumulated upon the adding-wheels may at any time be printed. it will be understood that if the pinions of the adding whcels were allowed to remain in mesh with the racks 610 during the downward movement of the latter the pinions would be turned backward by the downward movement of the racks. The pinions are free to turn backward upon their shaft 955 to but not beyond zero position. If, therefore, any rack be allowed to swing downward while in mesh with its pinion, it will turn such pinion backward until the pinion reaches 'zero position, whereupon the arresting of the pinion will arrest the movement of the rack. Thus if the pinion and its adding-wheel be standing at 9 it can turn backward ninetenths of a revolution, and the rack engaged with it can move downward a corresponding distance. If it be standing at 5, it can move backward five-tenths of a revolution, and the rack a corresponding distance, and so on, with the result that if all of the racks be released and the operating-handle be drawn forward while the pinions are permitted to remain in mesh with the racks each pinion will be turned backward the exact distance which it has been moved forward from zero position and the racks will all be permitted to move downward corresponding distances, and this downward movement of the racks will cause corresponding upward movements of the type-plates 618, carried b the rear end of the levers B, so that there wi 1 be brought to the printing-line the types corres ending to the numbers which have been disp ayed upon the adding-wheels. In other words, the totals which have been displayed upon the addingwheels will, by the return of those wheels to zero osition, be transferred toand presented by t e types at the printing-line at the rear end of the machine, so that by then forcing said tyfpes rearward against the platen the total 0 all the items previously added upon the adding-wheels may be printed upon the strip or sheet of paper. The pinions are left in mesh with the racks whenever it is thus desired to print a total by throwing out of 0perative position the arm 914 whose forward movement disengages the pinions from the racks in the manner heretofore explained. This is accom lished by depressing the total-key 265, w 'ch, through the medium of the link 911, swings the front end of arm 914 downward and disengages its member 91 1 from the stud 958 upon the pinion-carrying frame C, so that when the operating-handle is then pulled forward the arm 914 will move idly forward and leave the frame 0 in its normal position, with the pinions 916 in engagement with the racks 610, the depression of the total-key having, through the medium of the links 216 and cross-rod 209,displace the latches 415, and thus released the racks 610.

If the pinions were permitted to remain in mesh with the racks during the return upward movement of the latter at the release and backward movement of the operatinghandle, they would be turned forward again to the respective positions which they occupied prior to the operation of printing the total in the manner described, so that at the end of the operation there would remain accumulated u on the adding-wheels the amount which lad previously been added upon them, and succeeding items or amounts would thereafter be added to this aggregate of the preceding items. This is permitted when it is desired to merely print what is termed a subtotal and not clearthe machine; but for the purpose of printing what may be terrnetl a grand total and clearing the machine means are provife'l for swinging the pinions of the adding-wheels out of engagement'with the racks prior to the return upward movement of the latter, so that the pinions and adding-wheels will be left in zero position at the end of the operation of the machine, and the latter be thereby cleared. This is accomplished by means of the hooked lower end of the depending member 914* of the arm 914, which hooked end is adapted to cooperate with a stud 958 upon the ower end of the side arm C of the pinion-carrying frame. The depression of the total-key 265 swings this hooked end of the arm 914 downward into proximity to the stud 958, and when the arm 914 is moved forward at the forward movement of the o crating-handle the hook catches over t e stud 95S, and when the arm 914 is then drawn rearward again at the of the rearward movement of the operatinghandle, as heretofore explained, the engage- .ment of the hook with the stud pulls the lower end of the rocking frame 0 rearward and swings its upper en forward and disenages the pinions from the racks, so that the latter may move upward to normal position without turning the pinions.

The construction and operation, so far exlained, in general terms, are that of the welllinown Burroughs machine, and my invention which is shown embodied therein will now be described. As hereinbefore stated, the purpose of my invention is to provide means whereby the machine at the will of the operator shall rint a character or characters indicatin t e fact that the machine has been cleared, in the present instance such indication bein a horizontal row of characters composed w holly of ci hersa result which could not be attained y the machine when constructed as hereinhefore described. To this end I provide an additional latch and pawl, (marked 717 and 7.18, respectively) similar to the latches 717 and pawls E8 and arranged on the extreme left-hand side of the set or series of such latches and pawl's, as clearly indicated in Fig. 1. It will now he understood that when this latch 717*, which is not associated with any lever B, striker, or type-plate, but which is provided with a projecting lug d in the same manner and for the same purpose as the latches 718, is tripped by its pawl 718 all of the latches 717 wil e successively tripped, with the result that the entire set of the V type-plates, including, of course, in the present instance, the one corresponding to the row of keys of the highest denomination, will be caused to print oi hers in a horizontal row. For the purpose 0 tripping this additional latch 717 at the will of the o orator, and thereby tripping the ordinary atches of the machine, a special key E and intermediate connections are provided, such connections in the present instance comrising a substantially vertical lever or arm a, secured at its u per end to a rock-shaft C, journaled in'the Etc 210, Fig. 2. The lower end of this arm is provided with an inclined edge a, corres ending with the sloping shoulders 611* of tlie levers B and adaptedto give the same action to its pawl 7'18 as given by the said shoulder 611 to their respective paivlsthat is, normall a roclrirn movement to elevate the rearwar ends of the pawls of the non=operated levers B sniliciently to cause them to clear the shoulders on the upper edges of the latches in the movement of ,the pawis bodily forward. The forward movement of the arm 0, which is springpressed in that direction by spring 0, 15 kmlted by a branch arm 0', arranged to rest against the main rock-shaft 600.

As shown in Fig. 2, the rock-shaft C has a second depending arm c whose lower end is pivotally connected to the rearward end of a substantially horizontal link or bar D. This link is horizontally slotted intermediate of its length to receive the pin d at the lower end of the stem 3 of the special key E, whose depression, as shown in Fig. 2, a ainst the tension of the spring a brings the ink D in position so that its shouldered front end may be contacted by the pin 227 a when said key is depressed, as shown in Fig. 2, with the resuit that the link Dis thrust rearwardly and the edge e of the arm C raised to such extent as to he no longer controlling as to its pawl 718, but swung to an inoperative position with respect thereto. The pawl 718 u on its forward movement at the end of the on ward movement of the operating-handle 367 will consequentl en age its latch '71? and thereby trip all t 6 0t er latches successively to cause their strikers to operate and all the type-plates of the machine to implrint their ci hers on the paper carried by t e platenro ler, with the result that in the present instance a horizontal row of characters, compssedwholly of ciphers and rspresentin all the denominations on the keyboard will be printed.

The special key E is adapted to be locked to the he heard in depressed condition,so as to hold t e bar D pro erly positioned for its actuation by the tote -key, and to this end such key is provided on its rearward edge with a notch e to en age the keyboard in the usual manner. In t e present instance, and as shown in Fig. 2, the stem 6 of the s ecial key has a pin-and-slot connection wit the plate 210, to which end the key-stem is slotted to receive a pin or stud e, projecting from said plate and on which, as a fulcrum, the key-stem is rocked, as hereinafter explained. The forward end of the bar D is provided with a shoulder or projection D in order to )rcvent such bar from being swung upwardly y the bell-crank of the total-key and the special key E from being thereby rocked at its lower end in such manner as to be disengaged from the keyboard without the intended longitudinal movement of such bar. By reason of the pin-and-slot connection between the key-stem e and link or bar D the latter is permitted to move longn'tudinally a certain distance before rocking the lower end of the stem of the s ccial key on the pin 0 as a fulcrum, with t 1e result that the arm C is first rocked to inoperative position as respects its tripping-paw 718 before the s ecialkey is automatically disengaged from t e keyboard by the further travel or movement of such link or bar. Thus the special key may be set by the operator and be automatically released from its locking means during the last stage of the downward movement of the total-key and in position to be restored to normal position upon the upward movement or restoration of such total-key, it being understood that the latter is held down during the printing operation.

In Fig. 2 of the drawings the key E is shown depressed with the associated parts in position to be operated by the total key 265 for the purpose of making the described indication of the fact that the machine has been cleared. The key E in normal condition is held upwardly by the s rin e", and likewise the forward end of the l ink is held out of the path of travel of thi pin or stud 227" of the bell-crank, at which time the total-key 265 performs its usual and wellknown functions without actuating said link.

The mechanism or attachment which I have described provides a simple and eflicient means under the control of the operator for indicating to him whether the machine has been cleared when he began the printing and listing of individual items in a column, with the result that any total or footing at the bottom of that column represents the total of those particular items so listed below the horizontal row of ciphers. However, it is to be understood that the car g out of the invention might be modifie by printing less than the entire row of ciphers and that other means might be employed for recording a clear condition of the machine than those here shown without departing from the spirit and scope of the present invention.

I claim 1. In an adding-machine, the combination of printing and adding mechanism and means for clearing the machine and by the same operation printing a character to indicate the fact that the machine has been cleared; substantially as described.

2. In an addin -machine, the combination of printing and a ding mechanism and means for clearing the machine and by the same operation printing a cipher to indicate the fact that the machine has been "cleared; substantially as described.

3. In an adding-machine, the combination of adding, printing and clearing mechan isms, and key-controlled means cooperating with the printing mechanism and actuated by the clearing mechanism for printing a cipher when the clearing mechanism is operated to thereby indicate the fact that the machine has been cleared substantially as described.

4. In an adding-machine, the combination of addin printing and clearing mechanisms, an means actuated by the clearin mechanism in the clearing operation or causing the printing mechanism to rint a plurality of ci hers when the mac e is cleared to t ereby indicate the fact that the machine has been cleared substantially as described.

5. In an adding-machine, the combination of addingglprinting and clearing mechanisms, the printing mechanism being normally arranged not to print when the machine is clear, and means cooperating with the printing mechanism for causing the same to print a character when the machine is clear and to thereby indicate the fact that the machine has been cleared substantially as described.

6. In an adding-machine, the combination of adding, printing and clearing mechanisms, the printing mechanism being normally arranged not to print when the machine is "clear, and means under the control of the operator for causing the rinting mechanism to print a character w en the machine is in said condition and to thereby indicate that fact; substantially as described.

7. In an adding-machine, the combination of adding, clearing and printing mechanisms, the printing mechanism being normally arranged not to print When the machine is clear and key-controlled means cooperating with the printing mechanism to cause the same to print a character when the machine is in clear condition and to thereby indicate that fact; substant ally as described.

8. In an adding-machine, the combination of adding, printing and "clearing mechanisms, the printing mechanism being normally arranged not to print when the ma chine is clear, and means cooperating with the printing mechanism for causing the same the machine is in said condition and to there by indicate that fact; substantially-as described.

10. In an adding-machine, the combination of adding, printing and clearing mechanisms, the printing mechanism being normally arranged not to print when the machine is clear, and means under the con trol of the operator for causing the printing mechanism to print a plurality of ciphers when the machine is clear to thereby indicate that fact; substantially as described.

11. In an adding-machine of the multiplekey-bank t e, the combination of adding. printing an clearin mechanisms, and means for printing a c creator to indicate the fact that the machine has been cleared substantially as described.

32. In an adding-machine of the multiplekcy-bank ty e, the combination of adding, printing an clcarin mechanisms, and means cooperating with the prmting mechanism for causing the same to print a character to indicate the fact that the machine has been cleared substantially as described.

13. In an adding-machine of the multiple key-bank ty e, the combination of adding, printing an clearing mechanisms and means cooperating with the printing and clearing mechanisms for causing the same to permit a vlurality of ciphers to indicate the fact that t e machine'has been cleared substantially as described.

14-. In an adding-machine. the OOIHlHfitte tion of adding, printing and clearin mech? anisms, means arranged to cause t 1e printing mechanism to print a character to indicatethe fact that the machine has been cleared and a special key cooperating with said means and arranged to move the same to a osition to be operated by the cleans mec .anism in the clearin operation of is machine; substantially as ascribed 15. In an adding-machine, the combination of adding, printing and clearing mechanisms, means arranged to cause the printing mechanism to print a character to indicate the fact that the machine has been cleared, a s ecial key cooperating with said means an adapted to move the same into operative relation with the clearing mechanism whereby said means are c erated and the indicatin character cause to be printed in the cearing operation of the machine and means for locking the key in operated position, said clearing mechanism being arranged to unlock the key during said clearing operation; substantially as described.

7 16. In an adding-machine, the combination of printin and adding mechanism, mechanism for clearing the machine. said printing mechanism having a series of movable type carriers. a corresponding series of strikers or hammers which are inoperative when the machine isoperatcd during clear condition, and means under the control of the operator for causing the hammers to opcrate and thereby print ciphers to indicate the fact that the machine is clear; substantially as described.

17. In an addin -machine, the combinstion of rinting and adding mechanism, and means or clearing the machine and by the same 0 oration printing a horizontal row of similar characters at the head of a column of listed items to indicate that the machine has been cleared; substantially as described.

18-. In an addin -machine, the combination of rinting and adding mechanism, and means or clearing the machine and by the same 0 oration. rintin a series of ciphers at tie head e f a. co norm of listed items to indicate that the machine has been cleared f substantially as described.

19. In an adding-machine, the combination of printing and adding mechanism, means for adjustin the same for a clean iing operation, and a special key cooperatsaid printing mechanism to print a horizonta row of characters composed wholly of ciphers to indicate that the machine has been. cleared substantially as described.

21. In an adding-machine, the combination of printing and adding mechanism, means for clearing? the machine, said prmtm mechanism being controlled by a series 0% latches, and means for tripping the latches and thereby causing the printin mechanism to print a horizontal row 0 characters composed wholly of ciphers; enhstantially as described.

22. In an adding-machine, the combination of printing and adding mechanism, means for clearing the machine, said printing mechanism having a series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forc ing the type of the carriers against the platen,

a series or latches for controlling said strikers,

and n'ieans for tripping all of said latches to cause the type to print a horizontal row of ciphers; substantially as described.

23. In an adding-machine, the combination of printing and adding mechanism, means for clearing the machine, said printing mechanism having a series of movable typecarricrs, a corresponding series of spring-pressed strikers or hammers for forcing the type of the carriers against the platen, a series of latches for controlling said strikers, and manually-operated means for tripping said latehesto cause the type to print a horizontal row of characters composed wholly of ciphers; substantially as described.

24. In an adding-machine, the combination of printing and adding mechanism, means for clearin the machine, said printing mechanism having a series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forcing the type of the carriers a ainst the platen, a series of latches for control ing said strikers, and adapted to trip each other successively from left to right, and means for tripping the outermost latch on the left Without setting up any of the ty e-carriers, Whereb a horizontal row of cip iers will be printe to indicate that the machine has been cleared; substantially as described.

25. In an adding-machine, the combination of printing and adding mechanism, means for clearin the machine, said printing mechanism aving a series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forcing the type of the carriers a ainst the platen, a series of latches for control ling said strikers, and a separate latch tri ped at the will of the operator and positioned at the left-hand side of the outermost one of said series of latches, said separate latch bei arranged to trip such outermost latch an thereby cause the remaining ones t0 be successively trip ed, whereby a horizontal row of ci hers wi 1 be printed to indicate that the mac ine has been cleared, substantially as described.

26. In an adding-machine, the combina tion of printing and adding mechanism, means for clearing the machine, said printing mechanism aving a series of movable type-earriers, a corresponding series of spring-pressed strikers or hammers for forcing the t e of the carriers a ainst the platen, a series of atches for control ing said strikers, and a key-controlled latch positioned adjacent the outermost latch on the left-hand side of said series of latches and arranged to trip said outermost latch without the operation of any of the type-carriers, thereby causing all of said series of latches to be successively tri ped and a row of ciphers to be printed to indicate that the machinehas been cleared substantially as described.

27. In an adding-machine, the combination of printing and adding mechanism, means for clearin the machine, said printing mechanism having a series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forcing the type of the carriers a ainst the platen, a series of latches for control ling said strikers, a total-key controlling the operation of the printing mechanism to print a total, and tripping device actuated by the total-key for tripping said series of latches and to thereby cause a row of ciphers to be printed to indicate that the machine has been cleared substantially as described.

28. In an addingmiacliine, the combina tion of printing and adding mechanism, means for clearing the machine, said printing mechanism having a series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forc ing the type of the carriers a ainst the platen, a series of latches for controlling said strikers, a total-key controlling the operation of the printing mechanism to print a total, and a separate latch actuated by the total-key and positioned adjacent the outermost latch on the left-hand side of said series of latches, said separate latch bei arranged to cause a tripping of said series 0 latches and a conseuent printin of a row of ciphers to indicate t at the mac line has been cleared substantially as described.

. 29. Inan adding-machine, the combination of printing and adding mechanism, means for clearin the machine, said printing mechanism Iiaving a series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forcing the ty 0 of the carriers a ainst the platen, a series of atches for control ing said strikers, a total-key controlling the operation of the printing mechanism to print a total, a special or separate latch arranged to cooperate with said series of latches, and a tripping device for said separate latch normally mo erative but moved to operative position by t e operation of the totalkey; substantially as described.

30. In an adding-machine, the combination of printing and adding mechanism, means for clearin the machine, said printing mechanism raving a.series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forcing the type of the carriers against the platen, a series of latches 717 normally restraining said strikers from movement, and having means for causing their successive tripping from left to right after the tripping of one of them by its tripping-pawl, tripping-p awls 7 18 for tri ping said latches, a separate latch arrange adjacent the outermost latch on the left-hand side of such series of latches and itself adapted, when tripped, to trip said outermost latch of the series, a special and normally inoperative trip for said separate latch, and a total-key and connections for renderin said special trip operative when the tota -key is operated; substantially as de- W scribed.

31. In an adding-machine, the combine tion of rinting and addingmechanism, means for c caring" the machine, said pnnting mechanism having a series of movable type carriers, a corresponding series of springpressed strikers or hammers for forcing the type of the carriers against the platen, a se ries of latches 717 normally restraining said 7 strikers from movement and having means for causing their successive tripping from left to right after the tripping of one oi their by its tripping-pawl, tripping-pea ls 713 for tripping said latches, a separate latch ar" ranged adjacent the outermost latch on the left-hand side of such series of latches and itself adapted, when tripped, to trip said outermost latch of the series, a s ecial and normally inoperative trip for sai separate latch, a total-key and connections for rendering said trip operative when the totalkey is operated, and aseparate key for bringing said s 'ecial trip into operative relation with the total-keymechanism; substan tially as described. :vv

32. In an adding-machine, the combination of printing and adding mechanism, means for clearin .the machine, said printing mechanism aving a series of movable type-carriers, a corresponding series of spring-pressed strikers or'hammers for forcing the t e of the carriers. against theplaten, a series o latches 717 normally restraining said strikers from fm0vement and having means for causing their successive trippin from left to right after the tripping oi one 0 them by its tripping-pawl, tripping-pawls 7 18 for tripping said latches, a'separate latch arranged ad'acent the outermost latch on the left-hen side of such series of latches and itself adapted, when tripped, to tri said outermost latch of the'series, a s ecia l and. normally inoperative trip for sai se arate latch, a pivotedarrn G cooperating Wltlhlih said tri to normally keep thesame in inoperai tive re ation with respect to said separate latch, a "total-key and connections, and

means under the control of the operator tor operatively connecting the arm U with the total-key mechanism for swinging said arm to inoperative position; substantially as described. r r 7 33. in an adding-machine, the combine tion of printing and adding mechanism, means for clearing the machine, said printing mechanism having a series of movable type carriers, a corresponding series of spring-pressed strikers or hammers for forcing the type of the carriers against the platen,

a series of latches 717 normally restraining said strikers from movement and having means for causing their successive tripping from left to right after the tripping of one of them by its tripping-pawl, trippingawls 718 for trip ing said latches, a separate atch arranged a 'acent the outermost latch on the left-hand side of such series of latches and itself adapted, when tripped, to trip said outermost latch of the series, a s ecial and normally inoperative trip for sai separate latch, a pivoted arm 0 cooperating with the said trip to normally keep the same in inoperative relation with respect to said separate latch, s totahlre and connections, and a key-controlled'lin 1) arranged to be moved into the path of movement of the totalkey connections and to transmit such motion "to said arm 0, whereby the latter is swung to inoperative position and its trip caused to release all the latches and their hammers when the machine is operated; substantially as described.

34. In an adding-machine, the combination of printing and adding mechanism, means for clearin the machine, said printing mechanism raving a series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forcing the type of the carriers against the platen, a series of latches 717 normally restraining said strikers from movement and having means for causing their successive tripping from left to right after the tripping of one of them by its tripping-pawl, tripping-pawls 718 for trip said latches, a separate latch arranged a acent the outermost latch on the left-hand side of such series of latches and itself adapted, when tripped, to trip said outermost latch of the series, a s ecial and normally inoperative trip'for sai separate latch, a pivoted arm C cooperating with the said trip to normally keep the same in inop erative relation with res set to said separate lateh,a "total-key an connections, a rockshaft c to which the arm G is fastened, a second arm c fastened thereto, a link D pivotally connected at one end to said arm c a special key E operatively connected with the link, and a total-key? having a bell-crank connection 227 arranged to shift the link D when moved by its key into the path of movement of such bell-crank; substantially as described. r

35. In an "adding machine, the combination of printing and adding mechanism, means for clearing: the machine, said printing mechanism aving a series of movable type-carriers, a corresponding series of spring-pressed strikers or hammers for forcingthe type of the carriers against the platen, a series of latches 717 normally restraining -said strikers from movement and having means for causing their successive tripping from left to right after the tripping of one of them by its tripping-pawl, trippingpawls iIO ' cooperating with t 718 for trip ing said latches, a se arate latch arranged a j aoent the outermost iatch on the left-hand side of such series of latches and itself adapted, when tripped, to trip said outermost latch of the series, a s ecial and normally inoperative trip for said separate latch, a pivoted arm 0 cooperating with the said trip to normally keep the same in inoperative relation with respect to said separate latch, a total-key and connections, a rockshaft 0 to which the arm C is fastened, a second arm a fastened thereto, a link D pivotally'connected at one end to said arm 0, a special key E having a pin-and-slot connection with the link D intermediate of the latters length, and a total-key having a bellcrankconnection 227 arranged to shift such link longitudinally when the latter is moved by its key to cooperative relation therewith, whereby the arm 0 will be rocked to inoperative position and its trip permitted to engage and operate its latch, t ereby causing a tri ping of the series of latches associated wit the printing mechanism; substantially as described.

36. In an adding-machine, the combination of the levers B carrying t e-plates 618 at their rear ends, s ring-presse strikers 715 libtype-plates, a series of latches 717 corresponding in number with the strikers and levers B and normally restraining said strikers from movement, each of' said latches, except the outermost one on the ri ht, having lugs for tripping, when operated, the adjacent latch on its left, tripping-pawls 718 for trip ing the latches, a

special latch similar to t ose of the series of latches, a special pawl similar to those of the series of pawls and arranged adjacent the outermost left-hand latch of said series of latches, a pivoted arm C having an inclined edge a normally in the path of movement of the special pawl to keep the latter, when moved in the operation of the machine, from en agement with its latch, and key-contrdlled connections for shifting said arm to an inoperative position to allow said special pawl to engage its latch and thereby trip all the latches to cause a printing of a horizontal row of ciphers denoting that the machine is cleared substantially as described.

37. In an addingmachine, the combination of the levers B mounted on a rock-shaft 600 and carrying type-plates 618 at their rear ends, springpressed strikers 715 cooperating with the type-plates a series of latches 717 corresponding in number with the strikers and levers B and normally restraining said strikers from movement, each of said latches,

except the outermost one on the right,

havi lugs for trippin when operated, the a jacent latch on its eft, tripping-pawls 718 for tripping the latches, a special latch similar to those of the series of latches, a special pawl similar to those of the series of pawls and arran ed adjacent the outermost left-hand latch 0 said series of latches, a piv oted arm C having an inclined edge c normally in the path of movement of the special pawl to keep the latter, when moved in the operation of the machine, from engagement with its latch, said arm bein spring-pressed rearwardly and provided wit a branch arm a arran ed to contact said shaft 600 and thereby imit the movement of such arm, and key-controlled means for swinging said arm to inoperative position and permitting the special pawl to enga e its latch, thereby causing a tripping o the entire series of latches and strikers and a consequent printing of a horizontal row of ciphers to denote that the machine is cleared substantially as described.

38. In an adding-machine,the combination of the levers B carrying type-plates 618 at their rear ends, springpressed strikers 715 cooperating with the type-plates, a series of latches 717 correspondi in number with the strikers and levers B an normally restraining said strikers from movement, each of said latches, except the outermost one on the right, having lugs for trippin' ,when operated, the adjacent latch on its left, trippingpawls 718 for tripping the latches, a special latch similar to those of the series of latches, a special pawl similar to those of the series of pawls and arranged adjacent the outermost left hand latch of said series of latches, a pivoted arm C having an inclined edge 0 normall in the path of movement of the special paw to keep the latter, when moved in the operation of the machine, from engagement with its latch, a total-key and its connections, a special key arranged to be locked to its depressed or downward position, and movable mechanism arranged intermediate the total-key and said arm C and controlled by said special key, said mechanism being actuated by the total-key whose first movement rocks the arm C to inoperative position and whose continued movement also auto matically releases the special key from its downwardlocked condition; substantiallyas described.

39. In an adding-machine, the combination of the levers B carrying t e-plates 618 at their rear ends, spring-presse strikers 715 cooperating with the type-plates, a series of latches 717 corresponding in number with the strikers and levers B and normally restraining said strikers from movement, each of said latches, except the outermost one on the right, having lugs for tripping, when operated, the adjacent latch on its left, trippingpawls 718 for tripping the latches, a special latch similar to those of the series of latches, a special pawl similar to those of the series of pawls and arranged ad'acent the outermost left-hand latch of sai series of latches, a pivoted arm C having an inclined edge 0 normall in the path of movement of the special paw to keep the latter, when moved in the operation of the machine, from engagement with. its latch, a total-key and its connections, a special key, and a movable bar I) op erativel connected with said arm C and controlled li y the special key and adapted to be positioned thereby into the path of movement of the total-key connections; substantially as described.

40. In an adding-machine, the combination of the levers B carrying type-plates 618 at their rear ends, spring-pressed strikers 715 cooperating with the type-plates, a series of latches 717 corresponding in number with the strikers and levers B and normally restraining said strikers from movement, each of said latches, except the outermost one on the right, having lugs for tripping, when operated, the adjacent latch on its left, trippingpawls 718 for tri ping the latches, a special atch similar to t 1086 of the series of latches, a special pawl similar to those of the series of awls and arranged adjacent the outermost oft-hand latch of said series of latches, a pivoted arm C having an inclined edge e nor= mall in the path of movement of the special paw to keep the latter, when moved in the operation of the machine, from engagement with'its latch, a total-key having a movable connect-ion provided with a in 227, a special key arranged to be locks to its depressed or downward position, and a longitudinallysnovable bar D, operatively connected with the arm 0 and having a pin-and-slot connection with the special key, said bar being controlled by the special key and adapted to be ositioned into the path of movement of said pin 22? whereby such bar will first rock said arm C and subsequently rock the special key to release the latter from its locked condition; substantially as described.

41. In an adding-machine, the combina tion of the levers B carrying type-plates 618 at their rear ends, spring-pressed strikers 715 coojixerating with the type-plates, a series of late es 717 corresponding in number with the strikers and levers B and normally restraining said strikers from movement, each of said latches, except the outermost one on the right, having lugs for tripping, when operated, the adjacent latchonits left, trippingpawls 718 for tri ping the latches, a special latch similar to tliose of the series of latches, a special pawl similar to those of the series of awls and arranged adjacent the outermost cit-hand latch of said series of latches, a pivoted arm C having an inclined edge 0 normallv in the path of movement of the special pawl to kee the latter, when moved in the operation 0 the machine, from engagement with its latch, a total-key having a movahle connection provided with a pin 227 a special key arranged to be locked to its depressed or downward osition, and a longitudinally-movable bar 1 operatively connected with the arm G and having a pin-and-slot connection with the special key, said bar being controlled bv the special key and adapted to be ositioned into the path of movement of sail pin 227 said bar D being provided with means for preventing displacement or swinging movement when engaged by the pin 22?, whereby such her will first rock said arm C and subsequently rock the special key to release the latter fromitslocked condition; substantially as described.

42. In a machine of the character described, the combination with printing and adding mechanism adjustable for clearing operations, of means controlled by such adjustment for recording a clear condition of the machine.

43. In a machine of the character described, the combination with adding and listing means adjustable for clearing operations, of means controlled by such adjustment for recording a clear condition of the machine prior to listing.

CHAS. N MCFARLAND.

Vlitnesses G. M. JARMAN, M. E. KULE'WATZ.