GB110984A - Improvements in Proportional Calculators. - Google Patents
Improvements in Proportional Calculators.Info
- Publication number
- GB110984A GB110984A GB1813716A GB1813716A GB110984A GB 110984 A GB110984 A GB 110984A GB 1813716 A GB1813716 A GB 1813716A GB 1813716 A GB1813716 A GB 1813716A GB 110984 A GB110984 A GB 110984A
- Authority
- GB
- United Kingdom
- Prior art keywords
- scales
- extensible member
- calculators
- proportional
- evenly divided
- 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)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
110,984. Duckham, Sir A. M. Dec. 18, 1916. Proportional calculators of the kind in which an extensible member bearing graduations is mounted at the zero end of an evenly divided scale and adapted to be stretched alongside it. The single evenly divided scale is replaced by a number of scales having their zero marks in the same line and the extensible member H is mounted on a wire F' so that it can be moved transversely across the scales.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1813716A GB110984A (en) | 1916-12-18 | 1916-12-18 | Improvements in Proportional Calculators. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1813716A GB110984A (en) | 1916-12-18 | 1916-12-18 | Improvements in Proportional Calculators. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB110984A true GB110984A (en) | 1917-11-15 |
Family
ID=32250407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1813716A Expired GB110984A (en) | 1916-12-18 | 1916-12-18 | Improvements in Proportional Calculators. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB110984A (en) |
-
1916
- 1916-12-18 GB GB1813716A patent/GB110984A/en not_active Expired
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