US1528170A - Calculating machine - Google Patents

Description

Mar. 3, 1925.

S. A. SCHELLINO CALCULATING MACHINE Original Filed Feb. 24, 1920 2 SheetsfSheet l @uw w.. f a

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Mar. 3, 1925.

S. A. SCHELLNO CALCULATING MACHINE 2 Sheets-Sheet 2 originl Filed Feb. 24, 1920 INVENTOI; s. f7. SC/ff4L //\/O In' /M WITNESS:

vPatented Mar. 3, 1925.

SPIRIT A. SCHELLINO, OF SANA FRANCISCO, CALIFORNIA.

CALCULATING MACHINE.

Application led February 24, 1920, Serial No. 360,580. Renewed December 23, 1924.

To all whom it may concern:

Be it known that I, SPIRIT A. SCHELLINO, a subject of Italy, and a resident of the city and county of San Francisco, State of California, have invented a certain new and useful Calculating Machine, of which the following is a specification.

The invention relates to calculating machines of a type embodying toothed adjusting wheels, having laterally movable teeth, variable as to the number moved laterally and provided with key actuated means for laterally moving the desired number of teeth into operative position. The rotation of the wheels is preferably effected by a handle which projects to the outside of the machine and the values adjusted on the toothed adjusting wheels are transmitted on the rotation of the crank handle, indirectly, by means of intermediate wheels, to the figure discs of the counting mechanism, which, for

the purpose of making the direct'action of the units toothed adjusting wheel on the intermediate wheel of the figure discs of higher value possible, is preferably disposed in parallel displaceable relation to the adjusting mechanism axis. The counting mechanism or wheels indicating the crank revolutions, is located on the carriage of the displaceable main registering mechanism. The main registering mechanism, or series of figure discs, is provided with a suitable zero setting mechanism and the revolution indicating mechanism is similarly provided with suitable zero setting mechanism. The present invention relates particularly to the toothed adjusting wheels and the means forlaterally moving teeth on said wheels, variable as to number, into the path of the intermediate wheels of the counting mechanism. The mounting of the counting mechanism on a displaceable carriage is a well known expedient and will not be set fort-h herein, it being understood that any suitable or well known counting mechanism may be employed and may be arranged in fixed or displaceable relation, as desired.

An object of the invention is to provide key actuated means for moving the teeth of the adjusting wheel in variable numbers into the path of the registering mechanism operative means.

The invention possesses other advantageous features, some of which, with the foregoing, will be set forth at length in the following description, where I shall outline in full, that form of the invention, which I have selected for illustration in the drawings accompanying and forming part of the present specification. In said drawings I have shown one specific embodiment of my invention, but it is to be understood that I donot limit myself to such form, since the invention, as expressed in the claims, may be embodied in a plurality of forms.

Referring to said drawings:

Figure 1 is a top or plan view of one form of calculating machine embodying my invention.

Figure 2 is aside elevation of one bank of keys and the mechanism actuated thereby.

Figure 3 is a vertical section taken on the line 3-3, Figure 5.

Figure it isa vertical section taken on the line L1 4, Figure 5.

Figure 5'is an elevation of a toothed adjusting wheel' and co-operative mechanism.

The present invention relates to the toothed adjustingwheel and its co-operating and actuating mechanism and the specifica.- tion will be limited to such combination of devices, it being understood that the ydevices are `capable of employment in calculating machines embodying other suitable or well known devices for producing a complete calculating machine. The tooth adjusting mechanism of my invention comprises a unit, a plurality of which are assembled in-a complete machine. In Figure l I have shown a machine embodying five units but it is to be understood that any desired number of units may be assembled together. The registering mechanism is shown stationary, for the purpose of illustration, but may be mounted on a laterally displaceable carriage, as is well vknown in the art.

Each unit mechanism comprises a wheel 2 secured to a shaft 3 which is rotatable by a handle 4 or other suitablelmeans. Formed on or secured to one side of the wheel is a cage 5, having a peripheral slot 6 through which the tooth bars 7, 8, 9 and 12 extend. The tooth bars are pivoted to the cage 5 adjacent the center of the wheel, on a curved bar 13 lying in a plane parallel to the plane of the wheel, so that the tooth bars are movable laterally or in planes normal to the plane of the wheel. The slot 6 is wider than the tooth bars at that portion of the tooth bars which extends through the slot, so that the bars have a limited angular movement about the pivot bar.A The tooth bars are normally pressed away from the wheel and against the outer edge of the slot 6, by springs 14 disposed between the bars and the face of the wheel. The tooth bar 7 is provided with one tooth l5, the tooth bar 8 with one tooth 16, the. tooth bar 9 with three teeth 17 and the tooth bar 12 with four teeth 18. The teeth extend beyond the periphery of the wheel and normally lie in a plane displaced laterally from the plane of the intermediate toothed wheel 19 which is connected to the registering disc 21. Means are provided for moving the teeth laterally in variablel numbers into the plane of the intermediate wheel 19, so thatas the shaft 3 is rotated, the intermediate wheel will be moved through an angle corresponding to the number of laterally displaced teeth. The tooth bar 7 is provided on its face remote from the wheel with a projection 22, the tooth barv8 is provided with a projection 23, the tooth bar 9 with a projection 24 and the tooth bar 12 with a projection 25, the

projections being disposed at diferent distances radially from the center of the wheel.

i Arranged adjacent the wheel are a plu rality of radially movable 'slides 26-27, which preferably overhang the shaft 3 and which are preferably held in place between a collar 28 on the shaft and the next adjacent wheel 2. The slide 26 is provided on its upper end with a. curved cam 29 which is movable with the slide into position to be engaged by either or bothor. neither of the projections 22 and 23 on the tooth bars 7 and 8 and the slide 27 is provided on its upper end with a curved cam 31 which is movable with the slide into position to be engaged by either or both or neither of the projections 24 and 25 on the tooth bars 9 and 12. The plane of the face ofthe cams extends past the lane of the faces of the projections, so t at when a cam anda projection are equally displaced radially from the center of the wheel, rotation of the wheel will bring the projection into contact with the cam and cause a lateral movement of the tooth bar. The slides extend below the periphery of the wheel and means are provided for setting the slides in the desired positions to produce the desired lateral displacement of the desired number of teeth. Normally the cams are radially displaced di'erent distances than the projections, so that rotation of the wheel will cause no lateral displacement of the teeth.

`When it is desired to displace one tooth,

the cam 29 is positioned so that it will be -engaged by projection 22 only; when it is desired to displace two teeth, the cam 29 is positioned so that it will be engaged by projections 22 and 23; when it is desired to displace three teeth, the cam 31 is positioned so that it will be engaged by projection 24 only; when it is desired to displace four teeth the cam 31 is positioned so that it will be engaged byprojection 25 only; when it is desired 'to displace live teeth cams 29 and 31 are positioned to be engaged by projections 22 and 25; when it is desired to displace six teeth, cams 29 and 31 are positioned to be engaged by projections 22, 23 and 25;-when it is desired to displace seven teeth cam 31 is lpositioned to be engaged by projections 24 and 25 and so on. It is understood that the projections engage the cams and move the teeth laterally prior 'tothe time that the teeth pass into the field of the intermediate wheel 19 and that the teeth are held laterally displaced by the cams as they pass the field of the intermediate wheel,

so that the desired registration is effected.

Key operated means are provided for setting the cams 29 and 31 .in the proper positions for effecting the desired registration. rlhe slides 26 and 27 are guided vertically by the shaft 3 and the rod 33 and the slides are provided with pins 34 and 35 which are engaged by the bifurcated ends of the bell crank levers 36 and 37 pivoted on the frame `38. The other ends of the levers 36 and 37 are bifurcated for engagement with pins 39 projecting from the longitudinally movable slides 41 and 42 arrangedv in the frame 3S and held in backward position by the springs 40. Variable longitudinal positioning of the slides 41 and 42 produce variable vertical positioning of the slides 26 and 27 thereby eftecting the lateral displace? ent of variable numbers of teeth. The slides 41 and 42 are moved Vto and held in variable adjusted positions by the depressible' number keys 51, 52, 53, 54, 55, 56, 57. 58, and 59 mounted in the frame. Each key is held normallyvv in` elevated position by a spring 61 secured to the frame plate 62 and io a piu 63 on the key shank 64, which pin acts to limit the downward movement ot the key. Each key shank is shaped ditfcrently` corresponding to the number carried by the key` so that the depression of .fl-key sets the slide or slides 26 and 27 to move the corresponding number of teeth laterally. The slides 41 and 42 are proJ vided with pins 65-66 lying adjacent the forward faces of the Shanks 64 and these shanks are provided with inclined faces 67 over which the pins ride as the key is depressed. Above the inclined faces` the Shanks are of different widths so that the upper slide 41 isheld in different adjusted positions by de ression ofthe different keys. --for setting said cams in predetermined po- The pins on t e lower slide are variably placed with relation to the front faces of the shanks so that the lower slide ft2 is variably moved by the depression of dilerent keys. The key is held depressed by engagement ot' the pin 65 on the tooth formed. by the inclined face 67. Suitable means may be employed for clearing all of the keys.

Depression of key 54 causes a forward movement ot' the upper slide 4l .which sets the cam 31 to move tooth bar l2 laterall Depression of key 55 moves the upper sli e 41 the same distance and also moves the lower slide 42 Which causes both cams 29 and 3l to be set to move tooth bars 7 and l2. Key 56 moves the upper slide the same distance and the lower slide a greater distance on account. of the position of the cooperating pin 6G, so that the cams are set to move six teeth laterally. Key 57 moves the cam 31 to such position that it engages both projections 24 and 25 and so on. The upper slide 41 is connected to slide 27 and the lower slide 42 is connected to slide 26. Depression ot a key causes the mechanism to be set to cause a lateral movement of the number of teeth marked on the key, and rotation of the tooth wheel causes a registration of such number.

I claim: 1. In a calculating machine, a Wheel7 teeth pivoted to said wheel and projecting` radially therefrom and movable in planes normal to the plane of said Wheel; lateral projections on said teeth at different distances from the center of said Wheel; cams adapted to co-operate with said projections to produce movement of predetermined teeth and maintain said teeth in themoved position, upon rotation of said Wheel and means sition.

2. In a calculating. machine, a Wheel, teeth pivoted to said Wheel and movable in planes normal to the plane of said'wheel, projections on said teeth at different dislances from theV center of said Wheel, slides arranged adjacent said Wheel, cams on said slides adapted to co-operate With said projections and keys for moving said slides.

3. In a calculating machine, a Wheel, teeth pivoted to said wheel and movable in planes normal to the plane of said Wheel. projections on said teeth at diiferent dislances from the center of said wheel, slides arranged adjacent said Wheel, cams on said slides adapted to co-operate with said projections to move said teeth laterally as the Wheel is rotated, keys for moving said slides to position to cause the lateral movement ot predetermined teeth and registerinr mech-l anism arranged to be engaged by said laterally displaced teeth.

4. In a. calculatingmachine, a 'Wheeh teeth pivoted to said Wheel and movable in planes normal to the plane of said wheel, projections on said teeth at ditl'erent distances from the center of said Wheel, slides arranged adjacent said Wheel, cams on said slides adapted to co-operate with said projections, levers connected to said slides. slide bars connected to said levers and a plurality of keys associated with said slide bars.

In testimony whereof, I have hereunto set my hand at San Francisco. California, this 16th day of February 1920.

srnur A. soHELLiNo. In presence of H. G. PRosT.

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