GB136287A - Improvements in or relating to Visual Electrical Indicators for Collieries and other Mines. - Google Patents
Improvements in or relating to Visual Electrical Indicators for Collieries and other Mines.Info
- Publication number
- GB136287A GB136287A GB2113918A GB2113918A GB136287A GB 136287 A GB136287 A GB 136287A GB 2113918 A GB2113918 A GB 2113918A GB 2113918 A GB2113918 A GB 2113918A GB 136287 A GB136287 A GB 136287A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lamps
- bell
- switch
- contacts
- mines
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B19/00—Mining-hoist operation
- B66B19/06—Applications of signalling devices
Landscapes
- Audible And Visible Signals (AREA)
Abstract
136,287. King, J. Dec. 18, 1918. Mine signalling systems; order apparatus. - Signalling-apparatus designed particularly for mines comprises a number of lamps illuminating stencilled or other signs which form the front of compartments in a locked frame in which the lamps are situated. A bell is also provided for giving a number of rings corresponding with the visual signal. The lamps are selected by turning the handle of a switch, and the bell is rung by a separate device in the switch. In the switch shown in Fig. 7, leads i<1>, l<5>, &c. from the lamps are connected to contacts 1, 5, &c., and a circuit is completed through the contact x on the switch arm v through a battery to the common lead from the lamps. The bell leads are connected through semicircular wires s, t to contacts z, 6, which can be brought together by depressing the hinged part y. In the switch shown in Fig. 8, the common lead from the lamps is connected to a ring 16 mounted on an insulating-disk 13. Connexion is thus made through a brush 23 with a stud 17 connected to one of the lamps and selected by turning the handle 28 till the pointer 25 registers with a numbered notch. The bell is rung by depressing the knob 32, when a plate 34 bridges across the two sides of the bell circuit, which are connected to the contacts 35, 36.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2113918A GB136287A (en) | 1918-12-18 | 1918-12-18 | Improvements in or relating to Visual Electrical Indicators for Collieries and other Mines. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2113918A GB136287A (en) | 1918-12-18 | 1918-12-18 | Improvements in or relating to Visual Electrical Indicators for Collieries and other Mines. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB136287A true GB136287A (en) | 1919-12-18 |
Family
ID=32672640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2113918A Expired GB136287A (en) | 1918-12-18 | 1918-12-18 | Improvements in or relating to Visual Electrical Indicators for Collieries and other Mines. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB136287A (en) |
-
1918
- 1918-12-18 GB GB2113918A patent/GB136287A/en not_active Expired
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