GB632244A - Improvements in and relating to calculating devices - Google Patents
Improvements in and relating to calculating devicesInfo
- Publication number
- GB632244A GB632244A GB1587247A GB1587247A GB632244A GB 632244 A GB632244 A GB 632244A GB 1587247 A GB1587247 A GB 1587247A GB 1587247 A GB1587247 A GB 1587247A GB 632244 A GB632244 A GB 632244A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- shillings
- figures
- apertures
- pence
- 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
- G06G1/0005—Hand manipulated computing devices characterised by a specific application
- G06G1/0068—Hand manipulated computing devices characterised by a specific application for conversion from one unit system to another, e.g. from British to metric
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Image Generation (AREA)
Abstract
632,244. Calculating-apparatus. KENNETH, E. H. June 17, 1947, No. 15872. [Class 106 (i)] A device for showing the decimal equivalents of English money comprises an upper disc 1 having apertures 2, 3, 4, 5 and situated above a relatively-rotatable disc 6. The apertures in the left-hand side of the upper disc are at different radial distances from the centre from those in the right-hand side. Adjacent the left-hand apertures on the upper disc are marked even shillings 11 and corresponding decimals 11a of ú1. Against the right-hand apertures are odd shillings 12 and the first figures 12a of the corresponding decimals. Rings of figures 14, 16 on the lower disc show pence and corresponding decimals and are arranged to be read in conjunction with the even shillings figures 11, 11a on the upper disc. The lower disc also has two other rings of figures showing pence 15 and corresponding decimal equivalents 13 adjusted to include the." .05 " required to complete the equivalents 12a of the odd shillings 12. When' the lower disc is adjusted to set a pence figure, e.g. " 5d.," adjacent an odd shillings figure, e.g. " 9/-," the figures 12a on the upper discs and 13 on the lower read straight across give the decimal equivalent of 9s. 5d., i.e., .470833. The lower disc may be moved by a knob or may be larger than the upper disc or both discs may have projecting operating tabs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1587247A GB632244A (en) | 1947-06-17 | 1947-06-17 | Improvements in and relating to calculating devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1587247A GB632244A (en) | 1947-06-17 | 1947-06-17 | Improvements in and relating to calculating devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB632244A true GB632244A (en) | 1949-11-18 |
Family
ID=10067043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1587247A Expired GB632244A (en) | 1947-06-17 | 1947-06-17 | Improvements in and relating to calculating devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB632244A (en) |
-
1947
- 1947-06-17 GB GB1587247A patent/GB632244A/en not_active Expired
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