Historical Document · 1908
US Patent 897,688: Resetting Device for Adding-Machines (J. J. Walsh)
The Calcumeter's reset wheel, filed 29 November 1907 and granted 1 September 1908.
Historical Document · 1908
The Calcumeter's reset wheel, filed 29 November 1907 and granted 1 September 1908.
No. 897,688, PATENTED SEPT, 1, 1908. J. J. WALSH, RESETTING DEWICE FOR ADDING MACHINES, APPLICATION FILED NOW, 29, 1907, ad Zaw n 22 ZZZZZZZZZZZZZZZZ2 gy 2x s l minimit SNS a in N WITNESSES N -- YAY er s s f NWEAVTOR v/62772e.97.77% AsA2 UNITED STATES PATENT OFFICE. JAMES J. WALSE, OF ELIZABETH, N E W J E R SEY. RESETTING DEVICE FOR ADDING-MACHINES. No. 897,688. Specification of Letters Patent. Patented Sept. 1, 1908. Application filed November 29, 1907, Serial No. 404,236, To all whom it may concern: | to, so that further detail description of the Beit known that I, JAMEs J. WALSH, a citi said mechanism is not deemed necessary, it Zen of the United States, and a resident of being sufficient to state that between adia Elizabeth, in the county of Union and State cent numeral disks D is arranged a lever E, 5 of New Jersey, have invented a new and fulcrumed at E' on the back plate A and car Improved Resetting Device for Adding-Ma rying a cam surface E° for engagement by a chines, of which the following is a full, clear, finger F on the hub D' of the preceding nu meral wheel D, the said lever E also carrying and exact description. The invention relates to adding machines, a spring-pressed pawl G engaging a ratchet 65 . O such as shown and described in Letters Pat wheel II on the hub D of the next following ent of the United States, No. 689,255, grant numeral disk D. Spring-pressed dogs I are fulcrumed on the back plate A and engage ed to me December 17, 1901. The object of the invention is to provide a the ratchet, wheels H, to hold the same and new and improved resetting device for add the numeral disks D against reverse turning, 5 ing machines, arranged to permit the user to and each ratchet wheel His also adapted to 70 quickly raise the numeral disks to zero posi be engaged by a retarding dog J, fulcrumed tion whenever it is desired to do so. on the preceding lever E. The resetting device for resetting the nu The invention consists of novel features and parts and combinations of the same, meral disks D at Zero is arranged as follows: 7 5 20 which will be more fully described hereinaf On the studs A" are mounted to turn loosely gear wheels K of a train of gear wheels, also tel' and then pointed out in the claims. A practical embodiment of the invention is having an initial or actuating gear wheel K. represented in the accompanying drawings in mesh with the gear wheel K mounted on forming a part of this specification, in which the stud A' on which the unit numeral wheel SC similar characters of reference indicate corre rotates. The initial gear wheel K" is pro vided with a socket or recess K”, slightly in sponding parts in all the views. Figure 1 is a plan view of an adding ma clined, and adapted to receive a stylus or chine provided with the improvement, the other tool in the hand of the operator, to en cover being removed, and parts being in sec able the latter to turn the gear wheel K" and 85 30 tion and parts being broken out; Fig. 2 is a hence the entire train of gear wheels Kwhen transverse section of the same on the line ever it is desired to reset the numeral disks 2-2 of Fig. 1; Fig. 3 is a sectional plan view D at zero, as hereinafter more fully explained. of the adding machine provided with the im On the upper face of each gear wheel K is provement and showing the parts in a differ fulcrumed a spring-pressed paw L, adapted 35 ent position from the one shown in Fig. 1, to engage a single-toothed ratchet wheel N, 90 and Fig. 4 is a reduced perspective view of an secured to or formed on the hub D' of the adding machine provided with the improve corresponding numeral disk D. The ratchet wheels N and the pawls L are so arranged lment. The adding machine illustrated in the that when the numeral disks D are turned drawings is mounted on a back plate A and by the operator from the left to the right, is inclosed by a cover B, provided in its top | then the gear wheels K remain stationary, with apertures C, through which appear the as the pawls L. glide over the ratchet numeral disks D, having their hubs D' wheels N. mounted to turn on studs A" arranged on the When the operator inserts the stylus in the 45 back plate A, each numeral disk D being socket K? and turns the gear wheel K" in the L00 adapted to be turned by the use of a stylus direction of the arrow a', then the gear wheels or other tool in the hand of the operator, the K are rotated, and the pawls IL of the tens turning motion from the left to the right be numeral disk D and that of the thousands ing limited by a stop lug B' formed on the numeral disk D engage the ratchet wheels N 50 cover B and projecting into an opening C. and turn the said numeral disks correspond The mechanism employed for turning a nu ingly, that is, from the left to the right. meral disk D from a preceding one may be of When the operator, after having given a com any approved construction, preferably, how plete turn to the gear wheel K, turns the lat ever, like the construction shown and de ter in a reverse direction, then a reverse turn 55 scribed in the Letters Patent above referred ing motion is given to the gear wheels K, 10 2 897,688 whereby the pawls L turn the ratchet wheels claim as new and desire to secure by Letters N for the units and hundreds numeral disks Patent: D, to rotate the latter from the left to the 1. In an adding machine, a series of num right. ber disks, and a resetting mechanism com 5 In order to limit the turning motion given prising a train of gear wheels, and connec 70 by the operato' to the gear wheel K" to one tions between the gear wheels and the num full revolution in either a forward direction, ber disks, whereby the turning of one of the as indicated by the arrow a', or a reverse di end gear wheels of the train in opposite di lection, the following arrangement is made: rections will reset the said number disks to O A stop arm O is fulcrumed at O' on the back Zero position. plate A and has a limited swinging motion 2. In an adding machine, a series of num between stop pins P, P, secured on the back bel disks mounted to turn, and means for re plate A. The free end of the stop arm O is setting the number disks comprising a train adapted to be engaged by a pin Q, arranged of gear wheels of which one is the actuating on the face of the last geal wheel K of the gear wheel, connections between the gear SO train of gear wheels. Thus when the initial wheels and the number disks whereby two gear wheel K is turned in the direction of complete turns of the actuating gear wheel the arrow a' and has nearly completed a in opposite directions will set the number revolution, then the pin Q engages the arm disks to zero, and means for limiting the O and swings the same from the right to the turning movement in both directions. left, until the alm O abuts against the stop 3. An adding machine comprising a series pin P, thus preventing the arm O from of number disks, mounted to turn, and a re swinging further from the right to the left, at setting device for resetting the number disks the same time preventing further turning of to Zero position, the said resetting device 2 5 the last gear wheel K by the pin Qabutting having an initial or actuating gear wheel, a 90 against the locked arm O. The gear wheel train of gear wheels actuated thereby, and con K' can now be turned in the inverse direc nections between the said train of gear wheels tion of the arrow (t', and when having nearly and the number disks, whereby the turn completed a revolution then the pin Q en ing of the initial gear wheel in one direction gages the stop al'm O at the opposite side and will move sundry of the number disks toward swings the same from the left to the light, Zero position, and the turning of the actuat until the stop arm O abuts against the stop ing gear wheel in the opposite direction will pin P', thus preventing the stop arm O from complete the movement of said number further turning in this direction. From the disks to Zero position and move the remaining 100 foregoing it will be seen that when the initial number disks to said position. gear wheel K" is turned in one direction, then 4. An adding machine provided with a alternate numeral disks D are rotated, to series of number disks mounted to turn, and bring the numeral 9 into registering position a resetting mechanism for the number disks at the offset opening C in the face of the comprising a train of gear wheels of which 40 cover B, and when the initial gear wheel K" one is the actuating gear wheel, connections 05 is turned in the reverse direction of the ar between the gear wheels and the number row a' then the remaining numeral disk disks, whereby alternate number disks can wheels are turned, to bring their numerals 9 be turned nearly to Zero position when the into register with the opening C, and a slight actuating gear wheel is turned in One direc further turning of the initial wheel K" in this tion, and the remaining number disks can be O direction causes the numeral disks to pass to turned to zero position when the actuating Zero position, that is, the units and hundreds gear wheel is turned in the opposite direction, numeral disks D are turned by the corre and connections between the number disks sponding gear wheels K, their pawls L and whereby the movement of the said remaining the ratchet wheels N, while the tens and number disks to Zero position completes the 15 thousands numeral wheels D are turned turning movement to Zero position of the from the preceding numeral wheels by the said alternate number disks. action of the fingers F, the cam surfaces E, 5. In an adding machine a series of manu level’s E and pawls G. The turning move ally controlled number disks mounted to 55 ment of the initial gear wheel K" is finally in turn, a resetting mechanism comprising a 20 terrupted by the arm O abutting against the train of gear wheels of which one is the initial stop pin P. or actuating gear wheel, the others being t is undel'stood that it is wholly immate mounted to turn loosely on the axes of the rial how many numeral disks D are used, as number disks, connections between alternate 60 the arrangement holds good in either case, it gear wheels and the corresponding number being, however, understood that the adding disks for turning said number disks toward machine is usually provided with numeral Zero position when the initial gear wheel is disks up to the tenth million, as indicated in turned in One direction, connections between Fig. 4. the remaining gear wheels and the corre Having thus described my invention, I sponding number disks whereby the said 3. O 897,688 3. number disks are turned to zero position loose gear wheels, a tooth. On the hub of each when the said initial gear wheel is turned in number disk and adapted to be engaged by the opposite direction, and mechanism for the said pawl On the corresponding gear turning a number disk from a preceding one, wheel for turning the number disk to zero 5 whereby on the completion of the turning position on turning the initial or actuating 40 movement in the last mentioned direction all gear wheel, a back stop arm mounted to the number disks will be restored to zero po Swing, spaced stops for limiting the Swinging sition, and means for limiting the turning motion of the said stop arm, and a pin on the movement of the actuating gear wheel in last gear wheel of the train of gear wheels for O both directions. engaging the said stop arm to impart a swing 4.5 6. An adding machine comprising a series ing notion to the latter and to be stopped of number disks, each capabic of being turned by it. inantlally, mechanism for turning a number S. In an adding machine the combination (lisk from a preceding one, a resetting device With a casing comprising a back plate and a for resetting the said number disks at Zero cover for the same provided with apertures position, the said resetting device having a in its top, of manually controlled number train of gear wheels and spring pressed pawls disks, mounted to turn on studs arranged on 'arried on the said gear wheels and adapted the back plate, a train of gear wheels, also to engage a tooth on the sail number disks mounted to turn. On said studs, means for for rotating the latter to Zero position, a stop turning said number disks from said gear 5 5 arm having a limited swinging motion, and a wheels to reset the number disks at Zero, a pin. On the last gear wheel of the train of gear stop arm fulcrumed on said back plate, stop wheels and adapted to engage and impart a pins on said back plate between which the Swinging notion to the said stop arm and to said arm has limited swinging movement, 2 5 be stopped by the latter. and a pin on the face of one of said gear 60 7. An adding machine comprising a series wheels, and adapted to engage the stop arm, of number disks, each capable of being turned for the purpose set forth. Imanually, mechanism for turning a number Ir testimony whereof I have signed my disk from a preceding one, a resetting device name to this specification in the presence of 30 for Pesetting the said number disks at Zero two subscribing witnesses. position, the said resetting device having a JAMES J. WALSH. train of gear wheels, of which one is the initial Or actuating one and the others are mounted Witnesses: to turn loosely on the axis of the said number THEO. G. HOSTER, 3. 5 Wheels, a Spring-pressed pawl on the said EVERARD B. MARSHALL.