US666070A - Mathematical device. - Google Patents
Mathematical device. Download PDFInfo
- Publication number
- US666070A US666070A US3379700A US1900033797A US666070A US 666070 A US666070 A US 666070A US 3379700 A US3379700 A US 3379700A US 1900033797 A US1900033797 A US 1900033797A US 666070 A US666070 A US 666070A
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- US
- United States
- Prior art keywords
- sector
- mathematical device
- figures
- disk
- mathematical
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G1/00—Hand manipulated computing devices
- G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
Definitions
- Figure A is a dial arrangement consisting of figures for the purpose of furnishing the total amount multiplied or divided.
- Fig. B serves as a sector wherewith to multiply or divide.
- a disk having a series of igures in radial rows and in concentric circles, a pivot in the center of said circles, a sector of a circular disk revolubly mounted on said pivot and extended to cover all except tlie outside concentric circle of figures, said sector also having a radial row of iigures, said tigures on the sector corresponding in distance from the center with the figures on the disk, any ligure on the disk eX- cepting those in the outer circle being equal to the product of the figure in the outer circle in the radial row next to the left multiplied by the figure on the sector in the same circle, substantially as described.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Adornments (AREA)
Description
No. 666,070. Patented lan. I5, |90I. 0. SCHLEICHER.
MATHEMATICAL DEVICE.
(Application med oct. 2o, 19oo.\
(Nu Nadel.)
UNITED STATES PATENT OEEICE.
OTTO SCI-ILEICI-IER, OF CINCINNATI, OHIO.
MATH EMTICAL DEVEGE.
SPECIFICATION forming part of Letters Patent No. 666,070, dated January 15, 1901.
Application filed October 20, 1900. Serial No. 33,797. (No model.)
To all whom, t may concern,.-
Beit known that LOTTO ScHLEioHER,a citt zen of the United States, residing at Cincinnati,in the county of Hamilton, State of Ohio, have invented and produced a new and original Configuration of an Article of Manufacture of a Mathematical Device, of which the following is a specification, reference being had to the accompanying drawings.
Figure A is a dial arrangement consisting of figures for the purpose of furnishing the total amount multiplied or divided.
Fig. B serves as a sector wherewith to multiply or divide.
For example, to multiply twelve times twenty-seven bring the sector-letter B 7 under the figure 27 on dial lettered A. In the next right-hand column under the iigure 28, immediately in front of the figure l2 on the dial 13, Will be found the correct answer, 324. For division the rule is -j ust the reverse, as twenty-seven into three hundred and twenty-i`our goes twelve times. This mode of operation applies to all the different figures on the card.
I-Iaving described my invention, what I claim as new, and desire to secure by Letters Patent, is-
In a calculator, a disk having a series of igures in radial rows and in concentric circles, a pivot in the center of said circles, a sector of a circular disk revolubly mounted on said pivot and extended to cover all except tlie outside concentric circle of figures, said sector also having a radial row of iigures, said tigures on the sector corresponding in distance from the center with the figures on the disk, any ligure on the disk eX- cepting those in the outer circle being equal to the product of the figure in the outer circle in the radial row next to the left multiplied by the figure on the sector in the same circle, substantially as described.
In testimony whereof I have signed my name to this application in the presence of two witnesses.
OTTO SCHLEICHER.
Witnesses:
E. H. BAKER, W. C. HILL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3379700A US666070A (en) | 1900-10-20 | 1900-10-20 | Mathematical device. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3379700A US666070A (en) | 1900-10-20 | 1900-10-20 | Mathematical device. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US666070A true US666070A (en) | 1901-01-15 |
Family
ID=2734626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US3379700A Expired - Lifetime US666070A (en) | 1900-10-20 | 1900-10-20 | Mathematical device. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US666070A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308451A (en) * | 1979-05-21 | 1981-12-29 | Shedlock Culbert H | Overlap distance indicating device |
| USD392674S (en) | 1997-04-21 | 1998-03-24 | Irma Maritza Perez | Arithmetic instructional apparatus |
| USD392675S (en) | 1997-04-21 | 1998-03-24 | Irma Maritza Perez | Arithmetic instuctional apparatus |
| USD394878S (en) | 1997-04-21 | 1998-06-02 | Irma Maritza Perez | Arithmetic instructional apparatus |
| USD395675S (en) | 1997-04-21 | 1998-06-30 | Irma Maritza Perez | Arithmetic instructional apparatus |
-
1900
- 1900-10-20 US US3379700A patent/US666070A/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308451A (en) * | 1979-05-21 | 1981-12-29 | Shedlock Culbert H | Overlap distance indicating device |
| USD392674S (en) | 1997-04-21 | 1998-03-24 | Irma Maritza Perez | Arithmetic instructional apparatus |
| USD392675S (en) | 1997-04-21 | 1998-03-24 | Irma Maritza Perez | Arithmetic instuctional apparatus |
| USD394878S (en) | 1997-04-21 | 1998-06-02 | Irma Maritza Perez | Arithmetic instructional apparatus |
| USD395675S (en) | 1997-04-21 | 1998-06-30 | Irma Maritza Perez | Arithmetic instructional apparatus |
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