US1075124A

US1075124A - Slide-disk calculator.

Info

Publication number: US1075124A
Application number: US72461412A
Authority: US
Inventors: John Adolph Scheibli
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-10-08
Filing date: 1912-10-08
Publication date: 1913-10-07
Anticipated expiration: 1930-10-07

Description

J. A. SCHEIBLI.

SLIDE DISK CALCULATOR,

` APPLICATION FILED 0012.8. 1912. 1,075,1 24. Patented oct. 7', 1913.

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JIN .ADLPH YSGIHEIBLI, -O 'WEST NEW YORK, NEW JERSEY.

stimmten" oaneonmoa.,

Spcification 0f Ltts Tawlit.

fP-atenteaoet. 7,1913.

Application'ld October 8, 1912. Serial No. 734,614.

poses, since on account of the'laek of space in the short distance from the beginning to the end of the rule, a line and legible divi-V sion is impossible. Circular computing rules of a diameter of the length of those'lengest rectilinear computing rules are, on the contrary, not only very easily handled, but,on account of their 3.14 longer peripheral Ineas'- urement, make possible a graduation more exact to that very extent. In contrast to the circular, the rectilinear vcomputing rules also have the disadvantage that, according to the size of the result to be read, a second displacement of the'rule in one direction or the other is necessary when computing, so that the result will notpass beyond the scale.

IWith the circular computing'rulesthis disadvantage is done-away with, since here a continuous scale can be employed. The cir,- cular computing rules on the other hand' having only two gradually adjacent edges are limited to'fewer possibilities of computing with direct reading of theresults than the rectilinear rule, while the rectilinear computing rules have the advantage of being so arran-geable that by employing two pairs of mutually'movable edges provided with graduations, and by one adjustment of the rule, the result of two computing processes, `for instance, the product of three numbers, can be arrived at.

Thepurpcse of the presentinvention is to combine the advantages of the rectilinear and the circular rules. The simple transfer of the rectilinear arrangement to the circular form would not result in a handy construction or one operating ina manner permanently free from objection, since the rule would have to be constructed circular and be exactly fitted inside as well as outside. This disadvantage would be present especially in the Alar-ger lcomputing rules which are reouired in the large majority of cases, since they are absolutely necessary for computation of comparatively precise exactness.

In Ithe slide disk calculator according to the present invention, the graduations are placed on Ysup'erposed disks, the upper of which, at least, is transparent.`

-A device embodying the .invention is shown, by way of example, inthe accompanyin g drawing, fin which;-

Figure '-1 shows-a side elevationlof the deviee;-Fig.v2,aplan View thereof, and Fig. 3

shows a. partial vertical section on a larger scale.

A- pair of graduations, 1an inner and an outergraduation GQGZ, is'placed upon the transparentdiskp. This disk-isfastened to the crown g which-provided with the covering ring 1 also serves as a handle to rotate the disk Between the disk p and the ring g is anot- 1er vdisk cl which is attached to the ring e. Upon the disk al are-placed outer and inner graduations, G3 and G4, which in the present-case are alike and one of which is adjacent to the inner and the other tothe outersgraduation of the disk p. All these logarithmic graduat-ions as is apparent from Fig. .2, run continuously in the same way around the circumference, but the inner graduation upon disk p, is directed oppositely to the others. The hub e carryingthe rin-ge and in-turn the disk Z is rotatable upon the axis a of the stand a. The stand can be attached to a desk, not shown, rotatable about a horizontal axis. A hand wheel j" serves to rotate the disk d, which wheel is t-he ring e. By a'nut 7L. with counter nut z' the ring g is pressed against the hand wheel 'ring The latter is pressed against the ring g which yin its turn ispressed against the ring e. The disk-supporting ring y is therefore clamped between the disk-supportingring @and the hand wheehring rEhe pressure can beregulated by adjusting the nuts h, c'. The result of this larrangement is that, upon rotating the hand wheel f', in addition to the disk d, the crown rj and the disk 2') are carried along by friction, in case the two latter parts are not-prevented from rotating by holding fast the crown. And

vice versa, upon rotation of the crown q, in addition to the disk p, the disk ai is also rotated by friction in case the handv wheel f is not held fast.

In order to make possible the most exact reading, the indicator or runner m is not attached above the disks p and Z but between them. The indicator is fastened to a ring l, which is pressed against the ring e by the ring lc and hence through friction participates in the rotation of the disk d. After removal of the central nut c screwed onto axis a and of cover plate b, the friction between ring Z and ring e can be adjusted by means of the screws fastening ring lo to ring e. In order that the indicator may be rotated independently, an arm 0 is fastened to ring Z above the indicator, the end of which arm is provided with a handle 0. At the graduations the indicator m and the arm 0 are given a circular form and in the ring of the indicator is attached, for instance, a thread n. formed of a tine metal wire or a hair-line uponr a transparent plate.

To carry out a computation, commencement is made either by rotating hand wheel f while holding fast crown q', or by rotating crown Q while holding fast hand wheel f,- or by simultaneous moving of both parts. lVhen crown g is left free, both disks are moved together by rotation on hand wheel f. The movement of the disks can also be effected, of course, by rotation of .the crown g. In this way the slide disk calculator can be brought into such a position that the result will be directly in front of the person computing so that it will not be necessary for the computor to change his position, although the result of the compiuta-- tion is to be read, without rotation of the entire slide disk calculator, at a point lying opposite the person making the computation. O

Instead of the graduations specially shown, graduations formed in a different manner may also be employed for different kinds of computations.

The graduation arrangement shown on the drawing can also be repeated, so that several pairs of graduations are arranged on one disk, adjacent to which are graduations arranged on the inside and outside of the other disk. Additional graduations can also be arranged on one disk which are not adjacent to the graduations on the other disk. rlhe numbers on these graduations may be read o by employing the indicator.

It is understood that the word disk as used herein refers to the relatively movable parts of a calculator whether it be disk shaped or not. l

I claim as my invention: 1 In a slide disk calculator, the combination of a pair of superposed graduated disks; a rotatable crown connected. to one novara@c of the disks; and a hand wheel connected to and remote from the other disk.

2. In a slide disk calculator, the combination of a pair of superposed graduated disks; a continuous rotatable crown secured to one disk; and a continuous hand wheel secured to the other disk and in a dilferent plane therefrom.

3. In a slide disk calculator, the conbination of a pair of superposed graduated disks; a continuous rotatable crown secured to one disk; and a continuous hand wheel secured to the other disk and in a different plane therefrom, said crown and wheel being separated a considerable distance from each other.

4. In a slide disk calculator, the combination of a pair of superposed graduated disks; a continuous rotatable crown secured to one disk; and a continuous hand wheel secured to and remote from the other disk, said crown and disk being disposed in widely separate parallel planes.

5. In a slide disk calculator, the combination of a stand; a pair of rings both rotatable on said stand; a pair of disks carried by the rings respectively; a crown connected to one disk; and a hand-wheel connected to the ring on which the other disk is carried.

6. In a slide disk calculator, the combination of a support; a pair of co-axial disks rotatably mounted on said sulpport; an indicator revolubly mounted on the support co-axially between said disks and spaced from both of them; and means holding said disks and indicator in spaced relation and yieldably connecting the disks, the indicator and the support. 1

7. In a slide disk calculator, 'the combination of a support; a rotatable disk having frictional engagement with the support; a second rotatable disk out of contact with the support and having frictional engagement with the first disk; and a revolving indicator having frictional engagement with the irstdisk and out of Contact with the support.

8. In a slide disk calculator, the combination of a support; a rotatable disk mounted on said support; a second rotatable disk out of contact with the support and having frictional engagement with the first disk; and a revolving indicator associated with the disks.

9. In a slide disk calculator, the combination of a support; a rotatable disk mounted on said support; a second rotatable disk out of contact with the support and having vfrictional engagement with the first disk; and a revolving indicator associated with the disks and having frictional engagement with one of the disks.

l0. In a slide disk calculator, the combination of a support; a rotatable disk having noviem adjusting the friction between the indicator and the first disk.

11. In a slide disk calculator, the-combi.

nation of a support; a rotatable disk mounted on said support; a second rotatable disk out of contact with the support and having frictional engagement with thev first disk; a revolving indicator associated with the disks; and means for adjusting the friction between the disks.

12. In a slide disk calculator, the combination of a support; a rotatable disk mounted on said support; av second rotatable disk out of contact with the support and having frictional engagement with the iirst disk; a revolving indicator associated with the disks and havin frictional engagement with one of the dis s; and means for adjusting the friction between the indicator and said one` of the disks.

13. In a slide disk calculator, the combination of a support; a rotatable disk having frictional engagement with the support; a second rotatable disk out of contact with the sup ort and having frictional engage-l ment with the first disk; a revolving indicator having frictional engagement withthe first disk and out of cont-act with the support; Aand means for adjusting the engagement between the first disk and the support.

14. In a slide disk calculator, the combination of a pair of disks; an indicator therebetween; means for supporting the indicator and holding it out of contactwith the disks; and separate means for rotating the first named means.

15.' In a slide disk calculator,"the combination of a pairof super osed disks relatively concentrically rot-ata le, one of which has a central opening; a support concentrically rotatable relative to said disks; an indicator between the disks secured to said support; and a strong arm' secured to said support and disposed above the to disk.

16. In a slide disk calculator, t e combination of a support; a pair of disks rotatably mounted thereon; an indicator between the disks; a ring supporting the indicator and holding it out of contact with the disks; a strong arm secured to the ring; and a nonrotatable top `plate disposed higher than the disks and carried by said support.

' 17. In a slide disk calculator, the combination of a pair of disks and a ring rotatable about a common axis; a manipulating arm secured to said ring and havinga handle;

horizontal plane different from :horizont-al Y ynation of an upper disk; a lower disk be- .neatii the upper disk; an arm above the upper disk; an indicator between the disks;

and a member connecting the arm and indi-` cator.

19. In a slide ldisk calculator, the combination of an upper disk having a central opening; a, lower disk beneath the upper disk; an arm above the upper disk; an indicator between the disks; and a member disposed in said. opening and connecting the arm and indicator.

20. In a slide disk calculator, the combination of an upper disk having a central opening therein; a lower disk beneath the upper disk; a ring in said opening; an indicator between said disks and secured to the ring; and an arm above the upper disk and secured to the ring, said disks and ring being rotatable about a common axis.

21. In a slide disk calculator, the combination of an upper disk; a lower disk; a ring late below the lower disk and supporting t e upper disk; a manipulating wheel below the ring plate and connected to the lower disk; an indicator between the disks; and an arm connected to the indicator and disposed above the upper disk, said disks, plate, wheel, indicator and arm being rotatable about a common axis.

22. In a slide disk calculator, the combination of an upper disk; a lower disk; a ring plate below the lower disk and supporting the upper disk; a manipulating wheel below the ring plate and connected to the lower disk; an indicator between the disks; an arm connected to the indicator; and a supporting member around the axis of which said disks, plate, wheel indicator and arm rotate.

23. In a slide disk calculator, the combination of a supporting shaft; a'hub rotatably mounted thereon; a. lower disk mounted on the hub; a ring plate rotatably mountnation of a supporting shaft; a hub rota tably mounted thereon; a lower disk carried by the hub; a ring late rotatably mounted on the hub below the lower disk and provided with a peripheral crown; an upper and an indicator secured to said ring in a plate mounted on. said crown, above the is@ lower diei: and having e @entrai opening', )in testimony whereof, have signed my e ring rotatably mounted Within said open- 11eme to this specication in the presence of mg; en indicator carried thereon between twosubseribm Wltnesses.

the disks; a manipulating arm .mouned on JOH ADGLPH SCHEIBLI. 5 the disk above the upper disk; and a 'mw Witnesses:

nipuiating ring below the lower ring Piate FRANK H. LOGAN,

and connected to the hub. ALFRED R. ANDERSON.,