USRE20167E - Bookkeeping machine - Google Patents

Description

A. SMITH BOOKKEE ING MACHINE yNov. l0, 1,936.

origina; Filed April 26, 1924y 9 SheetS-Sheet l nventor Abraham Smith n ,i .H... Sigg.. la g l L ill: n n

l l In nanna W MM rlrllll//l//l//ll NOV. lo, A SM|TH l Re.

BOOKKEEPING MACHINE original Filed April 26, 1924 9 Sheets-sneet 2 lnventor Abraham Smith Cttorncg 9 Sheets-Sheet 3 A. SMITH BOOKKEEPING MACHINE original Filed April 26,' 1924 Nov. 10,1936.

nventor Abraham Smith By Hip Qttomeg Re. 20,167r

Nov. 10, 1936. A. SMITH BOOKKEEPING MACHINE Original Filed April 26, 1924 9 Sheets-Sheet 4 will Snventor Abraham Smith AA/Z/ His Cttorneg Nw. 1o, 1936.

A. SMITH BOOKKEEPING MACHINE original Filed April 26, 1924 9 Sheets-Sheet 5 l w a-J Abraham Smith His Attorney NOV. 10, 1936. A, SMITH Re. 20,167 I BOOKKEEPING MACHINE Original Filed April 26, 1924 9 Sheets-Sheet 6 Abraham Smith MM M ` Hi, Gttorrleg Nov. 10, 1936.

A. SMITH BOOKKEEPING MACHINE 1924A 9 Sheets-Sheet 7 Original Filed April 26 lhwentor Abraham Smith By I -lin Gftorneg Nov. l0, 1936. A. SMITH BOOKKEEPING MACHINE Original Filed April 26, 1924 9 Sheets-Sheet 8 3 nventor Abraham Smith Hi. Gttorneg NOV. 10, 1936. ,f A, sMlTH Re. 20,167

` BOOKKEEPING'MACHINE I original Filed April 26, 1924 9 Sheets-Sheet 9 Bnventor Abraham Smith Hin Gttorneu Ressued Nov. 10, 1936 UNITED STATES PATENT OFFICE BOOKKEEPING MACHINE Abraham Smith, Erie, Pa., assigner to The National Cash Register Company, a corporation of Maryland 17 Claims.

This invention relates to adding and recording machines, although it will be understood that some of the features of the invention can be used on adding machines which are not provided with recording mechanism.

While I have shown and described my invention particularly with reference to that type of machines in which there is a separate series of keys for each adding wheel, it will be obvious that some of the features can be utilized in adding machines using one series of keys only for all the adding wheels, and it will therefore be understood that While my invention as illustrated and described is embodied in a machine having several series of keys, I do not wish to be restricted to the use of some ofthe features in any special class of machines.

The objects of this invention are to provide mechanism to add, and to direct subtraction: to provide mechanism adapted to record items, totals, and remainders in several columns, without the use of a movable paper carriage: and to provide in such a machine mechanism which will be easily operated with a minimum of effort on the part of the operator.

The invention will be fully described hereinafter, reference being had to the accompanying drawings, in which:

Figs. 1,2, 3 and 4 are separate views of the front and rear portions of an adding and recording machine embodying my invention, viz:

Figure 1 is a sectional side elevation of the front end portion of my machine with the right hand plate of the frame removed.

Figure 2 is a sectional side elevation of the rear end portion of my machine, with the right hand plate of the frame removed.

Figure 3 is a sectional plan view of the front end portion of my machine, with a portion thereof broken away, thus eliminating one or more series of keys and associated adding wheels.

Figure 4 is a sectional plan view of the rear portion of my machine, with a portion thereof broken away.

Figure 5 is a sectional plan view of the rear portion of the left hand side plate and mecha- Figure 9 is a transverse section of the keyboard mechanism on the line 9 9 in Fig. 3.

Figure 9A is a fragment of the left hand side plate.

Figure 10 is a sectional elevation of the record- 5 ing mechanism on the line Ill-I I) in Fig. 4.

Figure 11 is a rear view of the recording mechaillSm.

Figure l2 is a sectional elevation of the recording mechanism on the line |2-I 2 in Fig. 4.

Figure 12A is an elevation of one of the selective cam-shafts of my invention.

Figure 13 is an end View of the same.

Figure 14 is a front View of the Zero controlling mechanism of my invention.

Figure l5 is a plan view of the same.

Figure 16 is a sectional side View of the same.

Figure 17 is a transverse section of one of the adding Wheel mechanisms on the line I'l-I'I in Fig. 8.

Figure 18 is a like section on the line |8-I8 in Fig. 8.

Figure 19 is a like section on the line I9-I 9 in Fig. 8.

In these drawings A indicates the frame of the 25 machine in which is mounted a rock-shaft A1 which may be operated by a hand crank, or motor mechanism, (not shown) in the usual manner.

Upon the rock-shaft A1 is secured a lever A2, see Fig. l, which carries a wrist-pin post, a..

To the rear of the rock-shaft A1, there is mounted in the frame A a transverse rock-shaft A3, see Figs. 2, 4 and 5, which is journalled in both side plates of the machine.

, Upon this transverse rock-shaft A3 there is secured an arm A4 upon which is pivoted a link-bar A5, see Figs. 1 and 2, which extends forwardly, and is pivoted upon the Wrist-pin a. in the lever A2 by means of a slotted opening a1.

From the wrist-pin a. to a post a2 on the link-bar A5 a spring a3 extends, so that the strain placed upon the operating lever (not shown) is placed upon the spring a3. A6 indicates a full stroke ratchet of ordinary construction and operation, adapted, in association with a double acting pawl, to require a full oscillation of the transverse rock-shaft A3, at each operation of the mechanism.

Upon the transverse rock-shaft A3 there is secured a lever a4 from which a spring a5 extends to an anchor post a6 which operates to turn the rock-shaft A3 back to its starting point.

Operating mechanism Mounted upon a transverse shaft B secured in the side plates of the machine frame A, are a plurality of lever frames B1, B2 and type carrier levers B3. In this invention type levers B3 can` be arranged in spaced groups as shown in Figs. 4 and ll, all of which are mounted and oscillate upon the shaft B.

The lever frames B2 correspond in number with the number of type carrier levers in each group,

fitting, one within the other, and consist of the` side bell-crank levers, b and b1, see Fig. 12, the arms thereof being connected by the cross bars b2 and b3. The type carrier levers B3, of each group, are each provided with segmental posts l)4 which extend upwardly and contact with the cross-bars b2 of the lever frames B2.

The type carrier levers B3 are each provided with springs br1 which maintain the segmental posts b4 on the type carrier levers B in contact with the cross-bars b2 of the lever frames.

Mounted upon the shaft B are a plurality of levers C, C1, C2 and C3, see Figs. 4 and 1l, each of said levers C being integrally connected with one of said lever frames B2 by means of a segmental arm c, as shown in Figs. 11 and 12.

Mounted upon the shaft B are bell-crank levers B4, the upper arms of which are connected by a cross-bar b5, which cross-bar rests upon the lever frames B2, the lower arms of which levers B4 are provided with rollers bs, see Figs. 2, 10 and 11.

Upon the transverse rock-shaft A3, a cam D is secured which engages the rollers be, and maintains the levers B'1 in the position shown in full lines in the drawings, and when said cam D is rotated upwardly by the operation of the machine releases said levers B1 so that the several lever frames and type carrier levers can swing upwardly, as indicated by broken lines in Fig. 12, and the return movement of said cam D will operate said levers B4 to move all of said levers back to their normal positions.

The levers C, etc., are each pivoted to a horizontal slide bar E, E1, E2, E3 and E1 by means of a pivot e., see Fig. 2, to each of which an operating spring e1 is secured, which, when the cam D is moved upwardly by the rotation of the rock-shaft A3, causes the slide bars E to move longitudinally toward the left, see Fig. 2, and the upper arms of the leve'rs B1 and B2 to swing upwardly, thus permitting the type carrier levers B3 to be swung upwardly by the springs b".

To limit the upward swing of the type carrier levers so that the required type will be raised to the printing line, lateral detent posts e2 are placed on the sides` of the slide bars E which as the bars slide forward, contact with a depressed key stem F, thereby stopping the oscilla.- tion of the lever C pivoted to that particular slide bar and the simultaneous swing of the lever frame B2 connected to said lever C by the segment bar c, thereby permitting the required type lever B3 to carry the required type upwardly and bringing it to rest at the printing line. This operation of the type lever takes p-lace in each group of type levers, unless otherwise regulated as hereafter described.

The keyboard The keyboard mechanism is Very similar to those of several other well known machines, being provided Witha plurality of rows, or columns of numbered keys, from 1 to 9. The key stems F are provided with springs f to return them to their normally raised positions, and with notches f2 to receive the edge of a swinging bar F1 the purpose of which is to retain a depressed key, in any column, down until all the bars F1 are simultaneously operated by the operation of the machine, to release the depressed keys. These bars F1 also are for the purpose of releasing a depressed key when a second key in the same column is subsequently depressed. To release all of the depressed keys when the machine is operated, I provide a transversely movable slide-bar F2, which is provided with shoulders f2 which are adapted to engage the swinging bars F1 and swing them out of the notches f3 in the key stems F, and I provide lever mechanism F3, adapted to be actuated by some movable part of the operating mechanism as hereinafter described. I also provide a spring f4 which tends to move the blocks f2 on the slide F2 away from said swinging bars F1 see Fig. 9. The lower ends of the key stems F are bifurcated, the arms of which are adapted to engage said detent posts e2 on either side of said slide bars E, as may be necessary to enable the desired detent post to arrive at and be stopped by the depressed key stems.

Accumulator wheel mechanism Upon the side of each of the slide-bars E, E1, E2 E3 and E4 is slidably secured a double gear rack frame G, see Figs. 1, 3 and 7, composed of a lower rack G1 and an upper rack G2. The upper rack G2 is offset, toward the right, out of the plane of the lower rack G1. G3 indicatesa transverse shaft slidably supported in the side plates of the machine frame, and passing transversely through the rack frames G.

Upon the shaft G3, are rotatably positioned gear pinions G4, which mesh with either the lower or upper racks as may be desired. The faces of said pinions G4 are double the width of the face of either rack, so that as said pinions are moved laterally, as hereinafter described, so as to engage the teeth on one or the other rack, they are never out of engagement with one of said racks. These pinions G4 rotate freely on the shaft G3, and are held in their proper position thereon by the collars g which are pinned on the shaft, so that when said shaft is caused to move longitudinally in its bearings, as hereafter described, the pinions G4 are carried with it out of engagement with one rack and into engagement with the other rack.

Each of the racks G1 and G2 and slide-bars E have a maximum simultaneous movement represented by nine gear teeth on said racks, which movement is stopped when one of the detent posts e2 engages a depressed key stem F, while the racks have a relative movement upon the slide bars E of one additional gear tooth.

This movement of the racks causes the pinion in mesh therewith to rotate an equal number of teeth.

Mounted on a transverse shaft H supported in the side plates of the machine frame, is a swinging frame composed of side bars H1 which are supported on said transverse shaft H, and are intermediately connected together by a transverse screw or bolt H2. There is one of these frames for each accumulator wheel. Secured in the free ends of the side bars H1 is a shaft H2, which is continuous and non-rotatable through all of the frames, and upon said shaft between the side-bars, H1 of each frame is placed an accumulator wheel, I and its integral wheels 11i, I2, I2, and gear pinion I4, see Figs. 17, 18 and 19.

The accumulator gear pinion I'1 intermeshes with the slidable lower gear pinion G'4, and its to commence their forward movement.

o vslide-bars E kcarry the racksG, so-that the racks periphery is provided with ten teeth which correspond to the nine numerals-and a zero represented on the periphery of the accumulator wheels. The cam i, on the cam wheel I1, notch i1 in the periphery of the wheel I3, and the radial post i3 in the periphery of the wheel I3 being opposite the zero on the accumulator wheel I and the tenth tooth on the accumulator gearpinion I4.

Mounted in the side plates of the machine frame is a transverse rock-shaft J, see Figs. 1 and 7,

upon which are non-rotatably secured cam levers J1 upon which the opposite ends of the shaft H3 rest, so that said shaft and the accumulator wheels and pinions I4 are supported on said cam levers J1 and when said cam levers J1 are operated as hereafter described, the cam surfaces J3 thereon will lift said shaft sufciently for the teeth on the accumulator gear pinion to clear the teeth of the slidable pinions G4.

To one of the cam levers J1, see Fig. 1, a linkbar J3 is pivoted, which extends rearwardly and is pivoted to a reversing plate J4 see Figs. 2 and l0, by means of a pivot-post i which extends into a vertical slot 93 in said plate. The reversing plate J4 is pivoted upon a stationary post :i3 secured on the side plate of the machine, see Fig. 4.

The link bar J3 is provided with a longitudinal slot j, see Fig. 1, into which a post K, secured on the stern K1 of the total key, projects,

`so lthat when the total key is depressed the pivot post j in said link-bar is caused to move downwardly to the bottom of the vertical slot J2 in the reversing plate J4.

Secured upon the transverse shaft A3, see Figs. 2 and 10, is a lever L, upon which a doubleacting pawl L1 is pivoted, which is adapted to engage a post i4 at the upper end of the reversing plate J4 at the downward movement of the lever L'and push the link-bar J3 forwardly and thus swing the cam levers J forward so as to carry the cam surfaces J3 thereon under the shaft H3 and raise said shaft and the accumulator gear pinions I4 out of mesh with the slidable pinions G4, and when the lever L reaches its lowest position, as indicated by broken lines in Fig. 10, the pawl L1 engages the post i5, at the lower end of the reversing plate J4, and when the lever L starts its upward movement, the link-bar J3 is moved in its reverse direction thus returning the cam-levers J1 to the position shown by full lines in Fig. 1, with the accumulator gear pinions I4 again in mesh with the slidable pinions G4.

When, however, the total key K1 is depressed prior to the operation of the lever L, the rear end of the link-bar J3 will be moved down to the lower end of the vertical slot i3 in the reversing plate J4, see Fig. 10, so that the lever L and its pawl L1 starts its upward movement there will be a forward thrust imparted to the link-bar J3 which will cause the cam-levers J1 to raise the accumulator gear-pinions I4 out of mesh with the sliding pinions G4.

It will be observed that the lever L, and cam D move simultaneously, and that the lever L immediately, begins tofcause, through the reversing plate J4, the link-bar J3 to push the cam-levers J1 under the shaft H3 so that the accumulator gear pinions I4 will be out of mesh with the sliding pinions G4 by the time the highest point of .the cam D has passed the roller 1; on the lever B4 thereby permitting the levers C and slide-bar E The are carried forward with the slide-bars E while the accumulator gear pinions I4 are out of mesh with the sliding pinions G4 and until the lever L and cam D are ready to commence their reverse upward movement, which causes the pawl L1 to engage the stud-post 75 on the reversing plate J4 for the purpose of causing the link-bar J3 to swing the cam levers J1 backwardly to alloa1 the shaft H3 to lower so that the accumulator gear pinions I4 will again mesh with the sliding pinions G4 and be rotated thereby during the backward movement of the sliding bars E and the racks G thereon, while the cam D is causing the type-carriers to recede to their normal positions of rest.

Printing and adding of numerals The movement of the slide-bar E and the rack G thereon is primarily controlled by the depressing of a key stem F; for instance if number 1 key stem F is depressed, see Fig. l, the lower end thereof will be in the path of the rst stud-post e3 thereon, and the forward movement of said slide-bar E will be stopped thereby, the rack G having turned the accumulator pinion G4 one tooth, and the depressing of any one of the other key stems F in the same column will operate in the same manner, the sliding pinion being turned the number of teeth corresponding to the number of the depressed keys. A3 is operated, the return movement of the operating shaft A3 causes the accumulator gear pinions I4 to drop into mesh therewith which :will rotate the accumulator a corresponding number of digits during the return movement of the slidebar E and rack-bar G.

The carry over mechanism Mounted upon the transverse bolt H2, which secures the side frames H1 together, is a lever h see Figs. 1, 3 and 19, which is adapted to ride upon the periphery of the cam wheel I1, and be operated by the cam surface, i, thereon. This lever h is provided with a hook, h1, see Fig. 19.

Mounted on the supporting shaft H and pass- 1T ing through the rear ends of the frames H1 is a sleeve h3, by which a lever h3 is non-rotatably secured, said lever h3 being adapted to engage the hook h1, by which it is normally held in a raised position, until the lever h is operated by the cam When the operating shaft the accumulator pinions I4, causes the accumu-100 lator wheel of the next order to rotate one unit forward.

In order to raise the lever h3 back and into engagement again with the hook h1 as shown by broken lines in Fig. 1, and thereby cause the lever h4 to press against the stud-post g, on the rack G and force the rack to return to its normal relative position on the slide bar E, a lever H4, see Figs. 1 and' 3, is secured on the supporting shaft H, the free end of which lever is provided with a linkbar H3 which is secured to a link-bar H3 extend- D, so that when said cam D returns to its normallyiraised position, as shownxin Figs.. Zand 10, m

the racks G etc., will be returned to their relative normal position on the slide-bars E as shown by full lines in Figs. 1 and 16.

Zero controlling and printing mechanism Mounted upon a. transverse supporting shaft M are a plurality of bell-crank lever frames M1, one arm of each of which is pivoted to slide-bars M2. Mounted on said shaft M and enclosing each of said bell-crank lever frames M1, are outer frames N, there being a pair of these frames upon said shaft M for each row of keys F.

Beginning at the left hand, each outer frame N is provided with an arm N1 which under-laps the next adjacent outer frame N toward the right. The inner bell-crank lever frames are provided with a slot, n, into which a post, m, secured in the outer frame projects, said slot being of a length equal to one unit, so that when the inner bellcrank lever frame is raised upwardly, as hereinafter described, the post m will raise the outer frame.

Upon the shaft M, an arm M3, see Fig. 16, is secured which, when the shaft M is rotated as hereinafter described, will swing the frames M1 and N upward to their normal raised position, and cause the slide bars M2 to move backwardly for the purpose hereinafter described.

The slide-bars E, each, have a post e3, see Figs. l, 14, 15 and 16, and the slidable racks G on said bars are each also provided with a post g1 which is adjacent to the post e3 on the slide-bar E, and in vertical relation, so that said posts constitute two units of space, and are under the inner frames M1. The inner frames M1 are each provided with a projection m1, the lower extremities of which are one unit of distance above the upper post g1 on the rack G, so that there are a total of three units of distance for the inner frame M1 and its projection m1 to swing in order to engage the post e3 on the slide bar E. Now when a numeral key in the first column of keys at the right is depressed, and the machine is operated, the link bar Hfs is moved forward, which releases the lever M3 which allows the spring m2 to draw the slide-bar M2 forward a distance equal to one unit which movement is limited by the post f1 engaging the slot in the slide M2, and projection m1 on the inner frame M atv the right, corresponding with the row of keys in which a key has been depressed swings downward, one unit, but does not engage either of the posts e3 and g1 on the slide-bar, and rack of that order.

To the left of the depressed key, all of the slides M2 are free to slide forward to the limit of their movement, so that all of the lever frames and outer frames M1 and N swing downward all of three units and engage both posts e3 and g1, thus preventing the slide bars E at the left of the depressed key from moving forward and thus avoiding the upward movement of the type carrier, so that no zeros will be printed at the left of the numeral.

If a numeral at the left is depressed, the slide M2 at the left will likewise move forward one unit, thus allowing the inner and outer frames at the left to swing down one unit of space, but not to engage the posts e3 and g1, so that the slide bar at lthe left is free to move forward far enough to print the number desired, while the succeeding outer frames N toward the right will likewise be permited to swing downward by the underlapping arms N1 frames M1 to swing downward one unit in uniand inner bell-crank son and the inner bell-crank lever frames, by reason of the slots n and post m, see Fig. 16, will drop one additional unit so that the projection M1 will engage the post g1 on the rack G thus permitting a movement of one unit of the slide-bars to the right of the depressed key which will cause all of the type carriers to the right to Swing upward one unit and raise the zero type to the printing line.

When the operating mechanism is returned to its normal position, the rearward movement of the link-bar H6 causes the arm M3 to swing the lever frames M1 and N upward thus forcing the slides M2 backward and releasing the depressed key.

When the link-bar is moved backward by the return movement of the operating mechanism the arm h6 on the link-bar H5 engages the bell-crank lever F3, see Fig. 3, and moves the slide F2, see Fig. 9, to the left thus disengaging the ratchet bars from the-key stems F and releasing all depressed keys.

Total printing mechanism When it is desired to print the accumulator total, as indicated by the accumulator wheels, the pinions Cir*1 must be in their adding position, intermeshing with the lower rack-teeth G1 see Figs. 1 and 7.

'Ihe total key K1, is depressed which moves the rear end of the link-bar J3 downward so that the stud post :i will be in the lower end of the vertical slot in the reversing plate J4, see Figs. 2 and 10. The lower end of said vertical slot, being curved forwardly, as shown in said figures, causes the upper end of said reversing plate to swing forward sulciently to release the lever pawl L1 on the lever L.

Pivoted to the total key stem K1 is a bell-crank lever O see Fig. l. 'Ihe opposite arm of the lever O has pivoted thereto a link O1, the forward end of which is provided with a slotted opening O2.

Secured upon a transverse rock shaft, P, is a lever P1, the lower end of which is provided with a pivot post, p, which engages the slotted opening O2 in said link-bar O1.

Rotatably mounted on the rock-shaft, P, are zero-stop levers P2 adapted to engage the radial zero-post i2 on the periphery of the wheel I3. 'Ihere is a stop-lever P2 for each accumulator wheel mechanism as shown in Fig. 3.

The hubs of these zero stop levers P2 are provided With shoulders p1, see Fig. 3, and nonrotatably secured on the rock-shaft P, are collars p2 having shoulders adapted to engage the shoulders p1 on the hub of the lever P2 and raise the same upward.

Rotatably mounted upon the shaft P beside each of the levers P2, is a zero controlling lever Q, which is provided with a laterally projecting ear or lug Q1 which overlaps the lever P2, so that the lever Q will be lifted by the lever P2 as hereafter described.

'I'he levers Q are provided with studs q adapted to enter the zero notch, i1 in the wheels I2, when said notches are on the upper axial line at the moment said lever Q is lowered as hereinafter described.

After an addition or series of additions have been made as hereinbefore described, and the total has been accumulated on the accumulator wheels, the series of radial posts, i2, and notches i1 on the several accumulators will be distributed u' at different points of their travel around their axes, and it is desired to print said total, the depressing of the total key K1, operates, through the levers and rockshaft P, hereinbefore described, to lower the levers P2 and Q upon the wheels I2 and I3 of the accumulator Wheel mechanism.

If the post q on the lever Q drops into a notch i1, on one of the accumulator wheel mechanisms, the free end q1 of said lever Q will fall below the laterally extending post m3 on the slide-bars M2, so that said slide bars can move forward to the limit of their movement, and allow the bell-crank lever frames M1, and outer frames N connected to such slide-bars M2 to fall enough to engage both posts c3 and g1 on the racks G and slidebars E and prevent their forward movement and the consequent raising of the zero type to the printing line. If, however, the post q on any of the levers Q, drops upon the peripheries of any of the wheels I2, see Fig. 18, the free ends q1 of such levers Q only drop far enough so that the posts m3 on the slide-bars M2 will engage the notch q2 in said lever, and thereby stop the forward movement of such slide-bars M2 at a distance of one unit, thereby allowing the bell-crank lever frames M1 connected therewith to swing downward one unit, but not far enough to engage the posts e3 and g1 on the racks G and slidebars E so that the type carriers will raise a numeral to the printing line, the same as if keys F were depressed.

When the operating mechanism is operated the slide-bars E and racks G thereon, not engaged by the bell-crank lever frames M2 will move forward, and because the gear pinions G4 and I4 are left in mesh, not having been disengaged by the action of the lever L and pawl L1 during their downward movement, the accumulator mechanism will be rotated backward until the radial posts, 12 on the wheels I3 are stopped by the zero levers P2, which will cause the type carriers B3 to raise the required type a distance equal to the number of gear teeth G1 on the racks G travelled by said racks until stopped by the joint action of said radial posts i2 and zero levers P1, and said total will be printed in the usual manner, and the total key being held down, the return upward movement of the lever L and pawl L1 will force the lower end of the reversing plate J4 forward, which through the link-bar J3 will diS- engage the pinions G4 and I4 leaving the accumulator wheels standing at zero.

Sub-totals When a sub-total is required, before the lever L and pawl L1 are allowed to start their return upward movement, the total key K1 is released, thus allowing the link-bar J3 and its stud post to return to the upper end of the slot in the reversing plate J4, which release of the total key K1 will at the same time again raise the zero lever P1 and lever Q off of the wheels I2 and If. In this case the gear pinions, not being released, the accumulator wheels will again be returned to their positions before a total is printed, upon the return upward movement of the lever L and pawl L1. Thus a total is obtained by pressing down the total key and holding it down during the entire movement of the operating mechanism, and a sub-total is obtained by holding down the total key during the first half of the operation of the operating mechanism, -and releasing said key before the commencement of the second half of said operation.

Sub traction When it is desired to subtract an amount from an amount previously accumulated, a subtraction key R is depressed, which through a bell-crank lever mechanism R1 causes the supporting shaft G3 to move longitudinally toward the right, which carries the pinions G4 to the right, so that they will slide out of mesh with the upper rack, as shown in Fig. 8, so that the forward movement of the slide-bars E and racks G thereon will turn the accumulator wheels operated, backward a number of teeth equal to the number to be subtracted. The addition key R2 is then depressed which slides the shaft G3 and gear pinions G1 thereon back to the position shown in Fig. '7, in adding position.

Column selective mechanism Each of the several groups of type carriers B2 represents separate columns in which items are to be printed, the total of all the items printed in the several columns being shown on the accumulator wheels. In these drawings I have shown four groups of type carriers B3, but it will be obvious that, by means of the mechanism I have shown, and described, any number of groups of type carriers can be used as may be desired.

It is necessary that mechanism be provided by means of which a selection of group of type carriers B3, desired to be used to print in the desired column can be made.

For this purpose I have provided on the type carrier hooks S, see Fig. 10, which are adapted to be engaged by spring-pressed hook levers S1 said levers S1, each being broad enough to engage the hooks, S, on each type carrier B3 of an entire group, so that the groups, not in use, will be retained in their lowermost positions.

To release a single group of type carriers, I have provided a cam shaft T, upon which are secured cams T1, T2, T3, and T4, there being a cam for each hook-lever S1. A quarter rotation of the cam-shaft T will cause one of the leverhooks to release a lever S1 from the hooks S on the type carriers B3 of one group, and allow the spring-pressed hook levers S1 to engage the hooks S on all of the other type carriers, so that only one group of type carriers will operate at a time.

To operate the cam-shaft T, I secure thereon a spur-gear U, see Figs. 2, 5 and 6. Intermeshing with the spur-gear U, is another spur-gear U1, which has upon the hub thereof a ratchet wheel, adapted to be engaged and operated by a ratchet lever U3, see Fig. 6, having pivoted thereon a ratchet dog u.

To the free end of the ratchet lever U3 is pivoted a link-bar U4 which is connected to an arm U5 secured on the rock-shaft A3, so that each operation of said rock-shaft will rotate the spurgear U1 one tooth of said ratchet U2. 'I'he spurgear U1 is of such diameter, that a single movement of said spur-gear U1 will cause the spurgear U on the cam shaft T to rotate a quarter turn and release one group of type carriers and secure all the other groups against operation, so that at the next operation of the mechanism the type carriers B3 will be ready to print in the next column.

In order to provide means by which the selective mechanism can be manually operated, when desired, I provide, on the left-hand of the machine a disc V, and thumb knob V1 which is non-rotatably secured on the shaft T of the spur-gear U, said disc V being provided with peripheral notches v, see Fig. 9^, corresponding with the positions of the cams on the cam-shaft T, and engaging the notches U is a stop lever V3, so that by means of the thumb knob V1 the camshaft T can be rotated backwardly, as far as may be desired.

Hammer mechanism Each type carrier B3 is provided with ten spring pressed type, O, 1, 2, 3, 4, 5, 6, 7, 8, and 9 of usual and well known construction, sol that further description thereof is unnecessary. In addition to the type above mentioned, each type carrier is provided with a, spring pressed type-dummy W for the purpose hereafter described.

For striking the type carried by the carriers B3, I provide a hammer W1, one for each group of type carriers, in these drawings four in number as shown in Fig. 4. Y

Each hammer W1 is adapted to strike all of the type carried to the printing line by the carriers of each group. When one or more of the carriers of a group are not raised, by reason of the elimination of the printing of zeros at the left of numerals, as hereinbefore described, the hammer W1 will strike the spring pressed dummy W, so that said hammer will always strike the full number of type, so that the stroke of the hammer will never be delivered upon one type alone, as there will always be the equivalent of ve type to receive the force of the hammer.

When the hammers W1 strike the positioned type, the latter are driven radially against a rotatable platen I5 carried by cross shaft I6 (Figs. 2 and 4). The platen I5 and its shaft I6 may be supported by any suitable means, in the position shown in Fig. 4, so as to be in proper position to serve the four groups of type carriers. Suitable feeding rollers may be provided to cooperate with the platen I5 so as to hold a sheet or strip of record material in the proper position on the platen' I5 and to enable the line by line feeding of the paper by the rotation of the platen I5. Such details of construction as the feeding rollers and the paper supporting table for cooperating with the platen of the type shown herein are well known in the adding machine and typewriter art and are not disclosed herein, as they form no part of the present invention, but merely serve, in their usual manner, to cooperate with the platen I5 to hold and feed a record material.

The step by step rotation of the platen I5 to provide a step by step feed of the record material is accomplished through the medium of a ratchet II (Fig. 2) fast on the shaft I6. Cooperating with the ratchet Il is a ratchet pawl I8 pivotally mounted on an arm I9 which, in turn, is pivoted on the shaft I6 and is operatively connected by a link 20 to the member D, which, as it will be remembered, is given a reciprocation at each operation of the machine. In this manner, at each operation of the machine, the platen I5 will be given a partial rotation to the extent of one tooth of the ratchet Il, so as to bring a new space on the record material to the printing line.

A ribbon 2l (Fig. 4) may be interposed between the type and the record material at the printing line, so as to cause an inked impression of the character to be printed on the record ma.- terial. The ribbon 2| may be mounted in the manner shown in Fig. 4, where it passes from one ribbon spool to another across the face of the platen I5 and is guided intermediate the groups of type carriers by the guide rollers 22.

Ink ribbon mechanisms and means for advancing ink ribbons of this character are old and well known in the art and the'details thereof are not disclosed herein, as they form no part of the present invention, and any well known form of ink ribbon mechanism may be employed in the machine disclosed herein.

'I'he hammers W1 are pivoted upon a shaft W3, and are each provided with an operating lever W3 to which a spring W1 is attached, which will cause the hammer to strike when the lever W3 is released.

To retain the hammer W1 in a backward position as shown in Figs. 2 and 10, I provide a latch lever X, there being a latch lever for each hammer. The latch levers are secured upon a rockshaft X1. Also secured upon said rock-shaft is a lever Y to which is pivoted a link-bar Y1 by means of a slotted opening y, the opposite end of said link-barY1 being pivoted on the eccentric pivot d see Fig. 10, so that just before the rock-shaft A3 reaches the limit of the rst half of its movement, after the released type carriers have carried the desired type to the printing-line, the hammers will be released.

Adjacent to each outside hammer W there is a hammer draw-back lever Z having a bar Z1, see Figs. 4 and 5, which engages the stems of the hammers, for the purpose of forcing them away from rthe type after the stroke has been delivered. These draw back levers are provided with arms Z3, to which link bars Z4 are pivoted which'l are also connected to the eccentric pivots d, see Figs. 6 and 10, so that during the rst half of the movement of the rock-shaft A3 the bar Z1 will be moved away from the hammer stems, and during the return movement of the rock-shaft, the bar Z1 will force such hammers, as made the stroke, back into position to be engaged by the latch X.

I have also provided a cam-shaft Z3 which will be rotated a quarter turn, at each movement of the rock-shaft A3, by the spur-gears Z4 and Z5, which last spur-gear intermeshes with the spurgear U1, so that the cams z on the cam-shaft Z3 will engage any hammer lever W3 and assist in returning the released hammer to latched position as indicated in Figs. 2 and 10.

From the foregoing description of the construction and operation of the several groups of mechanism, it will be obvious to those skilled in the art that, the accumulator mechanism of my invention can be used in several types of adding machines, and also that, column printing mechanism as shown and described by me, can be used in several types of such machines.

And further it will be obvious that many modif'lcations can be made in the construction and arrangement of the mechanism herein shown and described without departing from the scope of my invention.

What is claimed is:

1. The combination with type carrier levers arranged in groups, of movable bars positioned transversely of said levers, a type carrier lever corresponding to each movable bar, and means to cause said bars and type carrier levers to oscillate.

2. An oscillating spring pressed type carrier, an oscillating key controlled spring pressed transverse bar adapted to control the oscillation of said type carrier, and a cam controlled oscillatory transverse bar adapted to return said type carrier and the. rst mentioned transverse bar to their normal position.

3. The combination of type carriers arranged ln groups, an oscillating key-controlled transverse bar adapted to control'the oscillation of each particular type carrier in a single group, and operating means for permitting and arresting the movement of said type carrier, and corresponding transverse bars.

4. The combination `with a plurality of groups of type carriers, movable bars extending transversely of all said groups, means for oscillating each group by the same movable bars, and means to limit the movements of said movable, bars.

5. A plurality of oscillatory type carriers, a plurality of key controlled transverse bars adapted to limit the oscillations of said type carriers, and a cam controlled transverse bar adapted to engage the rst mentioned transverse bars and return them to their normal positions, all of said type carriers and transverse bars being mounted on a common axis.

6. A plurality of type carriers, arranged in spaced groups, a plurality of oscillatory transverse bars extending across all of said groups, a plurality of key controlled mechanisms connected to each of said transverse bars, a cam controlled transverse oscillatory bar extending across said rst mentioned transverse bars, adapted to return said type carriers to their normal positions, and selective mechanism adapted to retain the type carriers of some of said groups in their normal positions.

7. A plurality of type carriers, a spring pressed dummy type stem in each of said type carriers and a single hammer adapted to strike each of said dummy type stems when said type carriers are in their normal position.

8. A plurality of type carriers arranged in spaced groups, a hook on each of said type carriers, a lever hook adapted to normally engage the hooks on all of the type carriers of each group, and cam mechanism adapted to operate one of said lever hooks at a time to release the group of type carriers desired.

9. A plurality of type carriers arranged in spaced groups, a spring actuated hook lever for each of said groups, a hook on each of said type carriers adapted to be engaged by said hooklevers, a transverse cam shaft and a plurality of cams on said shaft and adapted, when rotated, to operate one of said hook levers to release one of said groups of type carriers.

10. A transverse shaft, a plurality of type carriers mounted on said shaft, a plurality of bellcrank lever frames, one enclosing the other and all mounted on said transverse shaft, an upright arm on each of said type carriers adapted to contact with each of said bell-crank lever frames, a plurality of longitudinally slidable key controlled bars, a lever pivoted to each of said key controlled bars and mounted upon said transverse shaft, and an arm secured to each of said levers and to each of said bell-crank lever frames.

11. A plurality of type carriers arranged in spaced groups, key controlled mechanism adapted to cause said type carriers to carry type to the printing line, hooks on said type carriers, hook levers adapted to engage the hooks on said type carriers to retain said groups of type carriers, and cam and gear mechanism adapted to release a desired group of type carriers to the action of said key controlled mechanism.

12. In a machine of the class described, the combination of a plurality of groups of type carriers arranged to print in separate columns on record material, means to print numerals by any group in its respective column including means for supporting said record material in fixed lateral relationship to said groups of type carriers for a series of successive operations of themachine, key mechanism to control the printing of numerals, means for moving said type carriers variable distances under control vof said key mechanism, selectively operable restraining means for each group of type carriers for holding the same against movement,'and automatic means acting through the medium of said restraining means to select in predetermined sequence the group of type carriers to be operated at each operation of the machine.

13. In a machine of the class described, the combination of a plurality of groups of type carriers arranged to print in separate columns on record material, means to print numerals by any group inv its respective column including means for supporting said record material in fixed lateral relationship to said groups of type carriers for a series of successive operations of the machine, key mechanism to control the printing of numerals, means for adjusting said type carriers under control of said key mechanism, selectively operable restraining means for each group of type carriers, and means automatically actuated at one operation of the machine and acting through the medium of said restraining means to select the group of type carriers to be adjusted at the next operation of the machine.

14. In a machine of the class described, the combination of a plurality of groups of type carriers arranged to print in separate columns on record material, means to print numerals by any group in its respective column including means for supporting said record material in iixed lateral relationship to said groups of type carriers for a series of successive operations of the machine, mechanism to control the printing of numerals, means normally effective and operable to move all of said type carriers simultaneously to set up numerals, and automatically operable means for selectively preventing the operation of certain of said type carriers by their moving means whereby selective column printing may be obtained.

l5. In a bookkeeping machine, the combination of a plurality of groups of type carriers arranged to print in separate columns on record material, printing mechanism cooperating therewith including means for supporting said record material in fixed lateral relationship to said groups of type carriers for a series of successive operations of the machine, mechanism to control the positioning of said type carriers, means normally effective and operable to position all of said type carriers simultaneously, and means automatically operable to select in predetermined sequence the group of type carriers to be positioned at each operation of the machine.

16. In a bookkeeping machine, the combination of actuating mechanism therefor, a plurality of groups of type carriers arranged to print in separate columns on record material, printing mechanism cooperating therewith including means for supporting said record material in xed lateral relationship to said groups of type carriers for a series of successive operations of the machine, key mechanism to control the positioning of said type carriers, means normally operable and effective to move all of said type carriers simultaneously under the control of said key mechanism, and automatically operable means for selectively preventing the operation of certain of said type carriers by said moving means at each operation of the machine whereby selective column printing may be obtained.

17. In a bookkeeping machine, the combination of a plurality of groups of type carriers arranged to print in separate columns on record material, printing mechanism cooperating therewith including means for supporting said record material in xed lateral relationship to said groups 10 of type carriers, key mechanism to control the

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