US767871A - Adding-machine. - Google Patents

Description

PATENTED AUG. 16, 1904. R. GORBIN.

ADDING MACHINE.

APPLICATION FILED APR. 20, 1904. N0 MODEL.

2 SHBETS-SHEBT 1,

WITNESSES.-

N VE N TOR fiayaz ATTORNEY PATENTBD AUG. 16, 1904.

R. GORBIN.

ADDING MACHINE.

APPLIOATION FILED APR. 20, 1904.

N0 MODEL.

INVE/VTUR fiyal (21"52'70 WITNESSES:

ATTORNEYS UNITED STATES Patented August 16, 1904.

ROYAL CORBIN, OF PLATTSBURG, NEWV YORK.

ADDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 767,871, dated August 16, 1904.

Application fil d April 20, 1904.. Serial No. 204,032. (No model.)

To 0]] Iv/1,07 it may concern:

Be it known that I, ROYAL CoRBIN, a citizen of the United States, and a resident of Plattsburg, in the county of Clinton and State of New York, have invented a new and Improved Adding-Machine, of which the following is a full, clear, and exact description.

My invention relates to a simple construction of adding-machine capable of being held in one hand--the left hand, for instance-and which is conveniently and readily operated by a pencil or stylus held in the other hand to effect an addition of a column of figures and show the correct aggregate of each column added or to effect a reversal of the mechanism, thereby, for example, restoring the various dials quickly and accurately to their normal positions, at which time the zero on each of the dials will be presented to properlydisposed openings in the casing of the device, at which openings the numerals are likewise presented at proper times which indicate the sum of the addition.

A further purpose of the invention is to provide an operative mechanism consisting practically of but three parts-a master unit wheel or dial and a wheel or dial representing tens and hundreds and a pawl for the combined tens and hundreds wheel or dial, which normally locks the latter wheel or dial and is operated at predetermined intervals by the rotation of the master unit wheel or dial as it releases the pawl from the combined tens and hundreds wheel or disk, acts upon the latter to turn it one point or numeral when the machine is operated for adding purposes, or wherein at any time both wheels or dials may be moved by the rotation of one in a backward direction to restore them to their normal or zero position.

Another purpose of the invention is to provide means whereby the master-wheel may be turned by the pencil or stylus exteriorly applied, so as to turn it and the master-wheel at proper time to effect the addition of succeeding numbers and present the total at the reading-face of the casing.

A further purpose of the invention is to provide such a construction of the device that the master-wheel may be controlled by the thumb of the operator while the device is in operation.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of the improved adding-machine, illustrating the manner in which it is designed to be held in the hand. Fig. 2 is a plan view of the improved adding-machine, the members being in their normal position, or in the same position as illustrated in Fig. 1. Fig. 3 is an edge view of the improved adding-machine, a part being in section to show more fully the construction of the casing. Fig. at is a plan view of the improved adding-machine, the parts being in the position shown in Figs. 1 and 2, the front or reading plate having been removed. Fig. 5 is an outer face view of the master unitswheel. Fig. 6 is a rear view of the same wheel, a portion of the cam at the back face thereof being shown broken away; and Fig. 7 is a vertical section taken practically on the line 7 7 of Fig. 6.

The casing A and, in fact, all of the parts are preferably made of metal and a metal which is as light as possiblefor example, aluminium. The said casing consists of a rear plate a, a front or reading plate a, and an interposed marginal supportingrib a These plates are preferably more or less tapering at their sides, the lower portions of the body of the plates being narrower than the upper portions of their bodies, as illustrated in Figs. 1, 2, and 4. The rear plate a is pro vided at its upper edge with a central arched or segmental extension 10, which does not extend to the side edges of said plate, thus producing at the upper side portions of the plate horizontal shoulders 11 and 11. (Shown best in Fig. 4.) The marginal or spacing section (0 extends around the marginal portion of the body of the back plate corresponding to the equivalent portion of the body of the front or reading plate a, and at the upper right- I hand end of the spacing-section a? a lip 12 is formed, which extends beyond the right-hand shoulder 11, and the upper exposed inner edge portion of this lip is more or less concaved, so as to temporarily receive and hold 15, preferably of circular construction, and

this opening extends half-way within the body er the said front plate a and half-way within the said extension 1 1, as is shown in Figs. 1 and 2.

-'Above the opening. 15 in the front face of the' extension 14: from the front or reading Body-plate a a series of numerals 16 is produced, reading from the right in direction of the left, and the reading of the numerals is from O to 9, inclusive. The said numerals are spaced an equal distance apart, as is shown in Figs. 1 and 2.

Preferably just below the central portion of the opening 15 an aperture or side opening 17 is made in the front or reading plate a of the casing A, and lower down a corresponding opening or aperture 18 is made, as is shown in Figs. 1 and 2. At these apertures or openings 17 and 18 the result of the addition is read. The circular opening 15 gives the thumb of the operator access to the outer sur face of the master-wheel, so that said wheel is under perfect control.

The sections of the body A, just described, are connected by'means of suitable screws 19 or their equivalents, which extend through the front or reading plate a and through suitable apertures 19, formed'in the spacing-section (0 and these screws 19 or equivalent devices employed are carried through the back plate a, as is shown in Fig. 3.

In connection with. the casing A, I employ what 1 term a'master units-wheel B and a wheel (J, which expresses tens and hundreds.

These wheels are located one below the other, the master units-wheel being the uppermost wheel and overlapping the combined tens and hundreds wheel. The master units-wheel is provided with a series of numerals reading in a double sequence from O to 9, and the two ciphers in the arrangement of the numerals are opposite each other. These numerals are designated in the drawings by the reference-letter b.

At the center of the master units-wheel an opening 21 is made of circular formation adapted to receive a stud 21*, which stud exrends outward and forward from the central portion of the circular opening 15 in the front section to of the casing, as is particularly shown in Figs. 1 and 2. The units masterwheel B is adapted to turn loosely on this stud 21, as is clearly indicated in .the drawings. A series of teeth 20 in the nature of ratchetteeth are formed at the periphery of the master units wheel B, and these teeth are so grouped that one will be practically opposite each numeral on the said wheel, the numerals appearing only on the front face of the wheel. The teeth will incline from the right in direction of the left of the said wheel, and their left-hand edges are more or less straight.

A disk 22 is secured to the back portion of the master units-wheel at its central portion, and this disk is provided with a central opening 21", which is in registry with the opening 21 in the master-wheel proper. The disk 22 is of much less diameter than the diameter of the master-wheel B and, as is shown in Fig. 6, is provided with opposite recesses 23 and 2 1, the barrier or transverse walls of which recesses are oppositely located, as is also shown in Fig. 6. This disk 22"may be termed a cam-disk, as the said disk, in connection with a pawl to be mentioned, regulates the movement of the combined tens and hundreds disk or wheel C.

The disk 22 is secured to the master-wheel B, preferably by means of suitable rivets 25, although other means may be employed for the purpose, and between the cam-disk 22 and the master units-wheel B, I locate usually a strip 26 of metal apertured to correspond to the apertures 21 and 21 in the wheel B and its disk 22, and the ends 27 of this strip extend beyond the cam-disk 22, and such ends are contracted and are in the form of teeth, being located between the respective numerals 9 ant O on the master units-wheel, but at the back thereof, as has been stated.

The combined tens and hundreds wheel C is mounted to turn on a stud 28, which is below the periphery of the master units-wheel B, and this combined tens and hundreds wheel 0 is flat, so that when in position on the stud 28 the peripheral portion of the master unitswheel will pass over its front face.

On the front face of the combined tens and units wheel C numerals 0 are produced, reading consecutively from -O to 19, inclusive, and the said combined tens and hundreds wheel C is provided with peripheral teeth 29, more or less triangular. Atooth 29 is opposite each numeral on the wheel, the numerals being produced near the peripheral portion of the wheel, as is shown in Fig. L.

A pawl 30 is employed to coact with the teeth of the wheels B and C, and this pawl between its center and its upper end is mounted'to turn on a stud 31 at the right-hand side of the pivot of the master units-wheel, and the stud 31 is secured to the back body-plate Fig. 1. The 30 is inclined in and is provided adapted to engage with the peripheral portion of the said cam-disk, while the lower and longer member of the pawl 30 is provided with a head 30 adapted to engage with the toothed peripheral surface of the combined tons and units wheel C, so as to enter the spaces between thelsaid teeth and prevent the latter wheel from shifting from its set position.

The numerals on the master units-wheel appear at the opening 17 in the front plate a of the casing, While the numerals on the combined tens and units wheel C appear at the lower opening 18, also produced in the front plate of the casing. Prior to the use of the machine, or in the normal position of the two wheels B and (J, a cipher will appear at both of the openings 17 and 18, as is illustrated.

An opening 32 is produced in the master units-wheel B, removed a desired distance from its center, and this opening 32 extends through the said wheel and its attached parts from one face to the other and is of such size as to readily receive the end of a pencil or stylus of any suitable description.

In the operation of this ad ding-machine, the wheels having been properly set by turning the master units-wheel to the left, so as to bring a cipher at the opening 17 and through the connection of said master-wheel with the combined tens and hundreds wheel C causing at the same time a cipher to appear at the lower opening 18, if it is desired to add five to seven, the device being held in the left hand, as shown in Fig. 1, it is simply necessary to place the stylus or pencil in the space between two teeth on the master or units wheel B adjacent to the figure 5, which is on the front scale 16 of the front of the easing, and then the pencil or stylus is forced to the right, revolving the master-wheel five points, and when such revolution has been made the pencil or stylus will strike the lefthand shoulder 13 and will be prevented from accidentally slipping from the shoulder by means of the projection or horn 12, heretofore referred to and forming a portion of the spacing-strip a of the casing. Next the stylus or pencil is placed in the space between the two teeth of the master-wheel adjacent to the numeral 7, and then the master-wheel is again revolved to the right through the medium of the pencil or stylus until the pencil or stylus shall have reached the right-hand shoulder 13 on the casing and will be again prevented from slipping therefrom by the horn or projection 12. hen the master units-wheel was first revolved, the numeral 5 was rendered visible at the opening 17; but after the second partial revolution of the master units-wheel the figure 2 will appear at the upper opening 17 and the numeral 1 at the lower a of the casing, as is shown in upper portion of the pawl direction of the cam-disk 22 with a head 30*,

opening 18, reading 12f which is the sum of seven and live, the numeral 1 the lower wheel and the tor-wheel B.

It will be observed, as stated, that there are two series of numerals on the master unitswheel, reading each from O to 9, inclusive, whereas the combined tens and hundreds wheel Chas produced thereon numerals reading from 0 to 19, inclusive, and at each half-revolution of the master units-wheel B the combined tens and hundreds wheel U is turned one tooth. This is accomplished in the following manner: Vhen one-half of the revolution of the master units-wheel B has been made, the upper head 30 of the pawl 30 will be opposite one or the other of the depressions 23 and 24' in the cam-disk 22. Consequently the lower head 30" of the said pawl is free to pass out from its position between adjacent teeth in the lower or combined tens and hundreds wheel C, and just at this time one point 27, extending at the rear of the master units-wheel, will enter the space between adjacent teeth of the wheel C, presented to it, as is shown by dotted lines in Fig. 1, and will consequently move the said wheel U the distance of one tooth, and at that time the upper head 30 of the pawl 30 will have ridden out of the recess or depression in which it was located to the plain peripheral portion of the cam-disk 22, thereby forcing the lower head 30" into the most convenient space between opposing teeth on the lower wheel C, preventing the latter wheel from moving until the upper or master units-wheel has again made a half-revolution.

It will be understood that the master unitswheel B must be turned a certain number of times to bring the cipher on the disk C at the opening in the casing after an addition has been made--as, for example, if the disk C stood at 16 in order to reset both disks to Zero the master units-wheels would have to be turned eight times; but it will be understood that the gear connections between the disk 0 and the master units-wheel B may be so made as to accomplish the aforesaid result without so many turns of the master units-wheel.

This device is exceedingly simple in its construction. It comprises but few parts and is being on 2" on the masab solutely perfect with reference to calculation. It can be readily and quickly manipulated, in fact as rapidly as numbers can be read by or dictated to a person controlling the device.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent- 1. In adding-machines, a casing having an upper segmental section and a shoulder at each side of said section, a master unitswheel mounted to revolve within the casing and having its central portion exposed for contact by the thumb of the operator, a combined tens and hundreds wheel likewise mounted to revolve in the casing, each wheel being provided with numerals upon its reading-face, and peripheral teeth corresponding innumber and practically in location to the said nuv merals, the peripheral teeth of the master units-wheel extending beyond the upper segmental section of the casing and being visible at the said shoulders, a pawl adapted for normal engagement with the combined tens and hundreds wheel and released from said engagement by the master-wheel at a point in its revolution, the said master units-wheel being provided with an inner point which at the time of such release engages with the combined tens and hundreds wheel to move the latter one numeral.

2. In an adding-machine, a casing, a master units-wheel mounted to revolve in the casing and having a portion of its periphery exposed, the master units-wheel being provided with numerals on its outer face reading from O to 9 inclusive, and a point on its outer face located between the numerals 0 and 9, a cam-disk located on the rear face of the master units-wheel having a recess therein, a combined tens and hundreds wheel also mounted to revolve in the casing and having a series of numerals thereon, teeth at the periphery of both wheels, located opposite the numerals thereon, and a pawl pivoted in the casing, h aving engagement with the said cam-disk and with the toothed periphery of the combined tens and hundreds wheel, the said master units-wheel being provided with an opening therein at one side of its center, adapted to receive a stylus or pencil, whereby the said wheel may be revolved in one direction, the same stylus or pencil being adapted for engagement with the teeth of the said master units-wheel to turn it in an operative or working position, and shoulders formed on the upper portion of the said casing, limiting the movement of the stylus or pencil when in operative engagem ent with the said master unitswheel, as described.

3. In an adding-machine, a casing, a combined tens and units wheel mounted to revolve units-wheel, the master units-wheel being provided with an opening at one side of its center to receive a stylus or pencil to impart movement thereto in one direction, and with a series of inclined peripheral teeth, together with numerals reading in two series, each from O to 9 inclusive, the teeth on the periphery of the master-wheel corresponding in number to the numerals thereon, and a camdisk located at the rear of said master unitswheel, having opposing recesses in its periphery and points extending from the back of the cam-disk in a radial direction, the points being located so as to be opposite the space between the numerals O and 9, and a pawl having an upper and a lower head, which pawl is pivoted in the casing, the upper head riding on the periphery of said cam-disk and the lower head being in engagement with the periphery of the combined tens and hundreds wheel, said casing being provided with a main opening in its front, exposing the opening in the master-wheel, and with a lower side opening adapted to expose the numerals on the two wheels, together with a scale reading from O to 9 at the upper portion of the main opening, the spacing of the numerals on the scale corresponding to the spacing of the peripheral teeth on the master Wheel, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

ROYAL GORBIN.

lVitnesses:

FRANK C. AGNEW, CHARLES J. VERT.

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