GB917515A - Improvements in calculating devices - Google Patents
Improvements in calculating devicesInfo
- Publication number
- GB917515A GB917515A GB3824660A GB3824660A GB917515A GB 917515 A GB917515 A GB 917515A GB 3824660 A GB3824660 A GB 3824660A GB 3824660 A GB3824660 A GB 3824660A GB 917515 A GB917515 A GB 917515A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scale
- arm
- value
- indicator
- indicated
- Prior art date
- 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
Links
Classifications
-
- 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
- G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
- G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Toys (AREA)
Abstract
917,515. Slide rules &c. WORMAN, G. M. [Representative of WORMAN, W. M.]. Nov. 8, 1961 [Nov. 8, 1960], No. 38246/60. Class 106 (1). A calculating device of the rotary slide-rule type is used to solve problems such as where k is a known constant and l, c, d are variables corresponding to e.g. the length, circumference and density, respectively, of cigarettes. The constant k is indicated by an arrow 13, which may be movable, on a longarithmic scale 11 of an outer disc 4. An indicated radial unity line, 9, of a logarithmic scale 7 on an inner rotatable disc 3 is aligned with the indicator 13, and the reading line 2 of a rotatable arm 1 is positioned above the value I on the scale 7. The arm is held in this position whilst the indicator 9 is brought into line with it. The arm is then released, moved, and held in position above the value c on an inner logarithmic scale 10, on disc 3 and of limited range ; the value c<SP>2</SP> being indicated at the same angular position on scale 7. The indicator is aligned with the reading line 2. The arm is then moved to the value d on scale 7 and the answer is read from scale 11 at this position. . Cylindrical members may be used instead of discs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3824660A GB917515A (en) | 1960-11-08 | 1960-11-08 | Improvements in calculating devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3824660A GB917515A (en) | 1960-11-08 | 1960-11-08 | Improvements in calculating devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB917515A true GB917515A (en) | 1963-02-06 |
Family
ID=10402221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3824660A Expired GB917515A (en) | 1960-11-08 | 1960-11-08 | Improvements in calculating devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB917515A (en) |
-
1960
- 1960-11-08 GB GB3824660A patent/GB917515A/en not_active Expired
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