Historical Document · 1901
Walsh's Calcumeter, filed 16 January 1901 and granted 17 December 1901: a straight row of identical stylus dials with a latch carry, the first commercial success of the type.
No. 689,255. . Patented Dec. 17, 1901, . . WALSH. ADDING MACHINE. (Application filed Jan. 16, 1901.) (No Model.) s Se ASS 2 SNS W/7WESSES 4449% égé- . v re-orris Petersco, Photo-lir-to-WASH:NGTON, D. /WWEW7OA BY 4. UNITED STATES PATENT OFFICE. JAMES J. WALSH, OF ELIZABETH, NEW JERSEY. ADDING-MACHINE. SPECIRECATION forming part of Letters Patent No. 689,255, dated December 17, 1901. Application filed January 16, 1901, Serial No. 43,468, (No model.) To all, whom it nually concert: turning the disk, as will be hereinafter de Beit known that I, JAMESJ.WALSH, a citi scribed. Adjacent to one of these depressions Zen of the United States, and a resident of or pockets a mark is placed, as indicated at S, 55 Elizabeth, in the county of Union and State which will indicate the depression in which of New Jersey, have invented a new and Im the pencil or other device is to be placed to proved Adding-Machine, of which the follow turn the disk to bring the “0” into the sight ing is a full, clear, and exact description. 4. Each disk has a tubular hub por This invention relates to improvements in opening tion 9, mounted to rotate on a stud 10, ex adding-machines; and the object is to provide tended upward from the bottom of the casing, O a machine of this character of simple and com and the disk with its is held in place, as paratively inexpensive construction and of here shown, by meanshub of a screw 11 engaging small compact form, so that it may be car in a tapped hole in the upper end of the stud, ried in a person's pocket or placed upon a with its head portion engaging upon the up desk for the convenience of bookkeepers, ac persurface of the disk. Connected to the hub 15 countants, and the like in adding long col of each disk is a ratchet-wheel 12. It may be umns of figures without material mental cal here stated that the ratchet-wheel 12 on the culation and insuring a correct total. hub of the units-wheel is only designed in co I will describe an adding-machine embody acting with a spring-pressed dog 13 to act as ing my invention, and then point out the novel a stop to prevent a backward movement of the features in the appended claim. - units-disk. The ratchet-wheels on the other Reference is to be had to the accompanying disk-hubs, however, are not only designed to drawings, forming a part of this specification, be engaged by spring-pressed stop-dogs 14 to in which similar characters of reference indi prevent backward movement, but are de 75 cate corresponding parts in all the figures. signed to be engaged with propelling devices Figure 1 is a plan view of a machine embody impart rotary motion to the disks. ing my invention with a portion of the casing that The propelling devices consist of plates 15, top removed to show the interior. Fig. 2 is a arranged between adjacent disk-hubs and piv plan view of a portion of the machine, show oted to swing on the bottom of the casing. ing parts in a different position from that Each plate 15 has a sleeve portion through 3o shown in Fig. 1. Fig. 3 is a section on the which a pivot-screw 16 passes, and the plate line acac of Fig. 1, and Fig. 4 is a section of one is held yieldingly and normally in its inop of the numeral-disks. w position by means of a spring 17, Referring to the drawings, 1 designates a erative coiled around said sleeve and having one end casing of any suitable material and through connected to the sleeve, while the other end 35 the top 2 of the casing is a series of alined is connected to a pin 18, attached to the bot openings 3, under which the numeral-disks are tom of the casing, Connected to each sleeve arranged. Each opening 3 at one side is pro surrounding the pivot-pin is a retarding-dog vided with an offset-opening 4, through which 19, consisting of a strip of metal designed to a numeral on a disk will be disclosed, and ex engage with the surfaces of the ratchet-wheels, 40 tended inward from the wall of each opening as clearly indicated in Fig. 1, as the propel at a short distance from the offset-opening 4 ling device is moved forward to impart a ro is a stop-finger 5. Arranged on the top around tary motion to the disk. Carried by the free each opening 3 is a series of figures ranging end of each plate 15 is a pawl 20, which is 95 from O' to 9.’ Each numeral-disk 6 has held in yielding engagement with its ratchet 45 on its upper surface a series of numbers rang wheel by means of a spring 21. ing from “0” to “9,” and all of the numbers ex On the rear side of each plate 15 near its cepting one, which is disclosed in the offset free end is a cam projection 22, the outer edge opening 4, will be covered by the top 2. Each of said cam projection being inclined from its OO diskis also provided within the circumference center in both directions toward the plate. of its opening 3 with a circular row of depres These cam-lugs are designed to be engaged sions or pockets 7, in which a pencil-point or by fingers 23, connected to and extended out other tool may be inserted for the purpose of ward from the hubs 9, and each finger is also 2 689,255 designed to engage with an arm 24, extended while the dog 14 will prevent a backward 45 outward from the pivoted end of the plate 15, movement of said tens-disk. After the fin SO as to move said plate to its normal position ger 23 passes the cam 22 it will engage with after it shall have performed its service in ro the arm 24, moving the plate 15 back to its normal position, where it will be held yield tating a disk. In operation the several disks, commencing ingly, as before stated, by means of the With the units-disk at the right-hand end of spring 17. While I have described the machine as all the machine, are to be rotated until “0” or Zero is disclosed through the sight or offset adding-machine, it is quite obvious that it may O opening 4. This is done by placing a pencil be employed in other calculations--such, for point or the like in the depression or pocket instance, as multiplication, division, or sub 55 . indicated by “0” and turning the disk in the traction. direction indicated by the arrow in Fig. 1 Having thus described my invention, I until the pencil or other turning device strikes claim as new and desire to secure by Letters IS against the stop 5, as indicated in Fig. 1. It Patent Will be noted that the depressions or pockets An adding - machine, comprising a casing of a disk are arranged midway between the having a series of openings through its top, figures on said disk, but are in line with the each opening having an offset or sight open figures on the casing-top. Assulming the first ing at One side, numerals arranged around figure of a column to be “9, the pencil-point each opening, a numeral-disk below each open is to be inserted in the depression or pocket ing and having a hub portion mounted to ro opposite the numeral '9' on the casing-top, tate on a stud, a ratchet-wheel on said hub then the disk rotated until the pencil is portion, a propelling-finger on said hub por stopped by the finger 5. This will bring the tion, a plate mounted to swing between ad 25 “9’ of the disk into the sight-opening 4. jacent hubs, a cam projection on the rear The next figure to be added to the “9’ may edge of said plate near its free end and adapt be “8.’ Therefore the pencil is to be in ed to be engaged by the propelling-finger, an serted in the depression or pocket of the units arm extended from the pivoted end of said disk opposite the figure 'S' on the casing plate and adapted to be engaged by said fin 30 top and said disk again rotated until stopped ger, a retarding-dog carried by said plate and by the figure “5.’ During this movement of adapted for engagement with the ratchet 75 the disk the figure “23” by engaging with wheel forward of the plate, a spring-pressed the cam 22 will swing the plate 15, so that its pawl carried by the free end of the plate for pawl will rotate the next or tens disk, rotat engaging with and operating the ratchet 35 ing it one step or until the numeral “1” is dis wheel forward of the plate, and spring-pressed closed in the sight-opening 4, and at this time stop-dogs engaging with the ratchet-wheels, the numeral '7' of the units-disk will be substantially as specified. disclosed through the sight-opening of said In testimony whereof I have signed my units-disk. The two numerals thus disclosed name to this specification in the presence of indicate the total of the added numbers-that two subscribing witnesses. is, seventeen. During the operating move JAMES J. WALSH. ment of the plate 15 the dog 19 will engage Witnesses: against the periphery of the tens-disk and JNO. M. RITTER, C. R. FERGUSON. prevent any possible overthrow of said disk,