GB567915A - Improvements in slide rules and other calculators - Google Patents
Improvements in slide rules and other calculatorsInfo
- Publication number
- GB567915A GB567915A GB871343A GB871343A GB567915A GB 567915 A GB567915 A GB 567915A GB 871343 A GB871343 A GB 871343A GB 871343 A GB871343 A GB 871343A GB 567915 A GB567915 A GB 567915A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scales
- disc
- marked
- transparent
- slide
- 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
- G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
- G06G1/08—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales
-
- 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
- G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
567,915. Circular slide-rules. MAcLEAN, J. D. June 1, 1943, Nos. 8713 and 11112. [Class 106 (i)] A calculator or sliderule of circular form comprises superposed coaxial relatively rotatable discs of which the upper is transparent and is marked on the lower side with two of the usual scales, e.g. the B and C scales, while the lower disc is opaque and is marked with the other scales (the A and D scales) in positions to cooperate with the scales on the transparent disc. An intermediate transparent disc or arm carrying a cunsor line may be provided. The slide rule may be duplicated by providing a third disc with B and C scales co-operating with A and D scales on the back of the lower disc, the scales being marked for calculations in sines and cosines. The slide rule may be mounted in a watch type of case, with one of the discs and the cursor rotatable by winding stems.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB871343A GB567915A (en) | 1943-06-01 | 1943-06-01 | Improvements in slide rules and other calculators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB871343A GB567915A (en) | 1943-06-01 | 1943-06-01 | Improvements in slide rules and other calculators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB567915A true GB567915A (en) | 1945-03-08 |
Family
ID=9857808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB871343A Expired GB567915A (en) | 1943-06-01 | 1943-06-01 | Improvements in slide rules and other calculators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB567915A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2591058A (en) * | 1951-03-19 | 1952-04-01 | Howard E Freeman | Screen and lens calculator |
US3280464A (en) * | 1964-11-05 | 1966-10-25 | Louis A Warner | Universal navigational plotter |
FR2065618A1 (en) * | 1969-10-31 | 1971-07-30 | Int Nickel Ltd | |
EP1943526A2 (en) * | 2005-10-31 | 2008-07-16 | Answering, LLC | Device for resolving interpersonal relationship issues |
-
1943
- 1943-06-01 GB GB871343A patent/GB567915A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2591058A (en) * | 1951-03-19 | 1952-04-01 | Howard E Freeman | Screen and lens calculator |
US3280464A (en) * | 1964-11-05 | 1966-10-25 | Louis A Warner | Universal navigational plotter |
FR2065618A1 (en) * | 1969-10-31 | 1971-07-30 | Int Nickel Ltd | |
EP1943526A2 (en) * | 2005-10-31 | 2008-07-16 | Answering, LLC | Device for resolving interpersonal relationship issues |
EP1943526A4 (en) * | 2005-10-31 | 2010-12-08 | Answering Llc | Device for resolving interpersonal relationship issues |
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