US695217A - Adding-machine. - Google Patents

Description

No. 695,2l7. P atented Mar. :1, I902.

' w. A. LANCKTON.

ADDING MACHINE.

(Application filed Oct. 28, 1901.) I (No Model.) 2 SheetsShaet l.

WITNESSES. INVEJVTUR.

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No. 695,2[1 Patented Mar. ll, I902.

W. A. LANCKTON.

ADDING MACHINE.

(AppXicatiou m M a, 4001.) (No Model.) 2 Sheets-Sheat 2.

WITNESSES. INVENTOR.

$2 M WWW/1% UNITED STATES PATENT OEEIcE.

WILLIAM A. LANCKTON, OF DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, TO ACME ADDER MANUFACTURING OO., LIMITED, OF

DETROIT, MICHIGAN.

ADDING-MACHINE.

SPECIFIQATION forming part of Letters Patent No. 695,217, dated March 11, 1902.

Application filed October 28, 1901. Serial No. 80,180. (No model.)

To all whom it may concern:

Be it known that 1, WILLIAM A. LANOKTON, a citizen of the United States of America, residing at Detroit, in the county of \Vayne and State of Michigan, have invented certain new'and useful Improvements in Adding-Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in adding-machines; and its object is to provide a cheap and compact machine for adding several columns of figures with despatch and accuracy and to so construct the same that the friction of the rotative annuliis reduced to the minimum and all binding prevented, but a slight uniform degree of force thus being required to operate the device. To this end I provide a suitable annular casin g with walls or flanges having shoulders to form races for balls, which balls support three rotative annuli or rings, all lying in the same horizontal plane, the outer one being provided with numbers representing the tens and units columns, the middle annulus the hundreds and thousands columns, and the inner annulus the tens and hundreds of thousands columns. Beneath these annuli is suitable mechanism for connecting the same, so that one revolution of one annulus will turn the one which is next within one space or number, and in the bottom of the casing is an opening closed by a plate to which the said mechanism is attached, so that it may be readily removed. Above these annuli are stationary annuli provided with graduated scales and openings through which the numbers on the rotative annuli appear.

It is also the object of my invention to pro vide the same with certain other new and usef ul features, all of which are hereinafter more fully described, and particularly pointed out in the claims, reference being had to the accompanying drawings, in which- Figure 1 is a plan view of a device embodying my invention with parts broken away to show the construction. Fig. 2 is a section of the same on the lines o: m of Figs. 1 and Fig. 3 is a plan View of one-half of the ma chine with the annuli removed. Fig. 4 is an inverted plan view of the rotative annuli; and

Fig. 5 is a detail of the plate with the dogs attached, showing their operation.

1 is an annular casing consisting of a bottom 2 and the continuous vertical walls 3, 4, 5, and 6, extending upward therefrom, and in the angles formed by the junction with the bottom of the walls 3, 4:, and 6 are formed the shoulders 7, which form ball-races for the balls 8. Supported by these balls near one edge and all lying in the same horizontal plane are the rotative annuli 9, 10, and 11, the outer annulus 9 being provided at its inner edge with holes 12, equally spaced apart and numbered from O to 99, inclusive, these numbers representing the units and tens columns. The middle annulus 10 is also provided with holes 12 near its outer edge, which holes are numbered the same as those in ring 9, these numbers representing the hundreds and thousands columns, and the inner annulus 11 is spaced and also numbered the same as the other rings, its numbers representing the tens and hundreds of thousands columns, but is provided with but one hole 12, which hole is near its inner edge and opposite the number 75.

A stationary annulus 13 is secured at its outer edge within a groove in the top of the wall (3 and extends inward, with its underside in proximity to the surface of the annulus 9, a distance less than the width of said annulus, so as to expose the openings 12 therein, and a transverse opening 14 is provided in the annulus 13 to expose the numbers on the annulus 9 beneath, one at a time, said annulus 13 being provided at its inner edge with a graduated scale, each line of which is opposite a hole 12 and numbered from O to 99, inclusive. An inner stationary annulus 15, with a similar graduated scale indicating the number of holes 12 in the annulus 10, is secured to the top of the wall. A and extends outward to near these holes 12, leaving them exposed, and inward to near the inner edge of the annulus 11, transverse openings 16 and 17 being provided in said. annulus 15 opposite the opening 14 to expose the numbers on the rings beneath, and extending across the annuli 13 and 15, from the inner to the outer walls and secured thereto adjacent to the lines thereof marked 0, is the stop 18.

On the under side of the annulus 9 is a rib 19, having a shoulder to prevent the balls'8 from rolling from the shoulder 7, and to the under side of the annuli 10 and 11 are secured the toothed rings 20, the teeth being formed on their peripheries, their inner edges also forming shoulders to retain the balls intheball-races. I prefer to use but four or five of these balls in each race, segments of wire 21 being interposed between the same to stantially V-shaped, and secured to the bottom of the casing adjacent to said rings are the springs 24, having their ends bent V- shaped to engage the teeth and equally hold the annuli from turning in either direction,

said springs being only strong enough to prevent accidental turning.

In the bottom of the casing is a circular opening closed by a plate 25, and above this plate the walls 4 and 5 are partially cut away to provide space for the dogs 26 and 27 ,which are pivoted on pins on said plate, the dogs 26 being provided with slots 28 to receive their pivot-pins. Springs 29 are secured at one end to the dogs 26 and engage the walls at their opposite ends to hold the inner ends of said dogs in engagement with the teeth of the rings 20, and the outer ends of the dogs are provided with the inclines 30, adapted to be engaged by pins 31, which extend downward from the annuli 9 and 10 and move therewith. In the side of each of the slotted dogs 26 is a notchwhich is engaged by one of the dogs 27, each of said dogs 27 being pivoted intermediate its ends and provided at its outer end with an incline 32, also adapted to be engaged by the pin 31.

To operate the machine, a style or tool having a suitable point to engage the holes 12 and turn the annuli may be employed. The rotative annuli are first set at zero or with their numbers O showing through the openings 14, 16, and 17, the inner annulus being so set by inserting the operating-tool in the hole 12 of this annulus and turning the same until the tool comes in contact with the stop 18. Each hole 12 in the annulus 9 represents a unit of the units and tens columns number of units to the columns"i"epresented 1 by the annulus turned, the scale-always indi-' cating the number of holes that any particular hole is distant from the stop. The pin 31 is so .positioned on the annulus 9 that when 57 said annulus hasmade 'one complete revolution the pin will engage the incline 30-of the dog 26, the opposite end of which is held 1n engagement with the toothed ring 20, and

move the same longitudinally on its pivot-pin to turn the annulus 10 one space. When the end of the slot 28 in said dog engages the pivot-pin, the longitudinal movement of the said dog is stopped and the outer end of said dog is forced inward by theincline 30 and the dog rocked on its pivot against the action n'al movement of said dog 26 turns the dog 27 onits pivot, thus projecting its opposite end having the incline 32'into the path of the pin 31, which pin upon further movement of its annulus will engage said incline and turn the dog 27 to engage the notch on th 26 and p move said dog 26 longitudinally on its pivot-" i pin to engage a newnotch of the toothed ring 20. A like arrangement of dogs is provided to actuate the annulus 11 from theannulus I g 10, and the springs 24 act to hold the annuli from being accidentally turned in either direction and to bring the holes 12 directly opposite the lines of the scale. It willthus be seen that by this arrangement the inner annulus 11 is free to turn independently of the annulus 10, but may be turned by it, and that the annulus 10 may be turned withoutaifecting the annulus 9, but may be intermittentlymoved by it.

The advantage of providing the removable plate 25, on which the dogs are pivoted, is obvious, as the actuating mechanism is thus made accessible for repair and is easily replaced, the walls engaging the upper side of the dogs and preventing them from becoming disengaged from their pivot-pins.

The annuli 9 and 10 do not contact the shoulders 22, but serve only as supports when the style is engaged with the holes 12 and downward pressure applied and by supporting the annuli at one edge on the balls the friction is reduced to the minimum and all binding prevented.

What I claim as myinvention is- 1. In an adding-machine, in combination 'with the casing thereof, rotative annuli mounted in hearings on said casing, a toothed mounted on said casing, a toothed ring secured to the under side of the inner annulus, a dog provided with a slot and adapted to engage the said toothed ring and having a notch in its side, a pivot-pin on the casing engaging said slot, a dog pivoted to the casing and engaging said notch, and a pin on the outer annulus to engage the outer ends of said dogs.

3. In an adding-machine, in combination with the casing thereof, rotative annuli mounted in bearings on said casing, toothed rings on the inner annuli and a rib on the outer annulus, a friction-spring secured to the side of said rib and engaging the said casing, springs having V-shaped ends to engage the toothed rings, dogs having slots and notches and adapted to engage and turn the toothed rings, pivot-pins engaging the slots and pivoted dogs engaging the notches, both the pivoted and slotted dogs being provided with inclines at their outer ends, springs secured to the inner ends of the slotted dogs to hold the same in engagement with the toothed rings, and fixed pins on the outer and intermediate annuli to engage the said inclines of the dogs and operate the same.

4:. In an adding-machine, in combination, an annular casing provided with a bottom having a circular opening, an outer peripheral wall having a groove in its upper end and a shoulder on its inner side forming a ball-race, an inner marginal wall provided with a like shoulder, an intermediate an nular Wall having a shoulder forming a ball-race and cut away at its under side above the circular opening in the bottom of the casing, anda second annular Wall also cut away above the circular opening in the bottom and provided with a shoulder at its inner and outer side to form supports for annuli, balls and Wire segments in said ball-races, rotative annuli supported by said balls at one of their edges, the outer annulus being provided with a rib having a shoulder to engage and retain the balls in place, and the inner and intermediate annuli provided with toothed rings having shoulders to retain the balls in the races, a circular plate secured in the opening in the bottom of the casing and having upwardly-projecting pins forming pivots, dogs each having a slot to engage one of said pins and provided with an incline at its end and a notch in its side, and dogs pivoted on the other pins on the plate and engaging the notches of the slotted dogs at one end and provided with inclines at their opposite ends all of said dogs lying partially beneath the intermediate Walls of the casing within the cut-away portion thereof and engaged thereby at their upper sides to hold said dogs on their pivot-pins, a fixed pin on the said rib of the outer annulus and a fixed pin on the toothed ring of the intermediate annulus, a fixed annulus secured Within the groove of the peripheral Wall and extending inward above the outer rotative annulus and provided With a transverse slot, and a fixed annulus having transverse openings secured to the upper end of one of the intermediate walls and extended laterally above the inner and intermediate annuli.

In testimony whereof I affix my signature in presence of two Witnesses.

WILLIAM A. LANCKTON. Witnesses:

Orro F. BARTHEL, JOSEPH A. NonLKE.

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