GB518731A - Improvements in or relating to means for demonstrating control operations in electrical and other flow circuits - Google Patents
Improvements in or relating to means for demonstrating control operations in electrical and other flow circuitsInfo
- Publication number
- GB518731A GB518731A GB2535438A GB2535438A GB518731A GB 518731 A GB518731 A GB 518731A GB 2535438 A GB2535438 A GB 2535438A GB 2535438 A GB2535438 A GB 2535438A GB 518731 A GB518731 A GB 518731A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- diagrams
- slider
- visible
- relating
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
Landscapes
- Actuator (AREA)
Abstract
518,731. Diagrams. JACKSON, E. W. Aug. 30, 1938, No. 25354. [Class 146 (ii)] Electric, hydraulic, or pneumatic circuit changes are demonstrated by a diagram comprising a fixed part showing the circuit to be controlled with gaps completed by one of several diagrams on a moving part to complete the circuit of that control position. Fig. 3 shows a four - heat electric circuit with a series - parallel switch, the varying connections being shown by diagrams 12 visible through an aperture 7 in a fixed part 1, the diagrams 12 being formed on a slider 3 having 'explanatory panels 21 visible through a window 20. The slider may travel right through part 1 or, as shown, may carry ears 3a limiting its travel, and the ears may project beyond the sheets 2 of part 1 and act as indicators. According to the Provisional, Specification, the fixed and moving parts may be pivoted together, and the moving part may consist of an arm or disc giving a direct representation of the circuit established atthe switch..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2535438A GB518731A (en) | 1938-08-30 | 1938-08-30 | Improvements in or relating to means for demonstrating control operations in electrical and other flow circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2535438A GB518731A (en) | 1938-08-30 | 1938-08-30 | Improvements in or relating to means for demonstrating control operations in electrical and other flow circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB518731A true GB518731A (en) | 1940-03-06 |
Family
ID=10226302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2535438A Expired GB518731A (en) | 1938-08-30 | 1938-08-30 | Improvements in or relating to means for demonstrating control operations in electrical and other flow circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB518731A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2523339A (en) * | 1946-05-07 | 1950-09-26 | Noah E Sprecher | Wave form demonstrator |
-
1938
- 1938-08-30 GB GB2535438A patent/GB518731A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2523339A (en) * | 1946-05-07 | 1950-09-26 | Noah E Sprecher | Wave form demonstrator |
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