GB191417000A - Improvements in and connected with Signalling in Mines. - Google Patents
Improvements in and connected with Signalling in Mines.Info
- Publication number
- GB191417000A GB191417000A GB191417000DA GB191417000A GB 191417000 A GB191417000 A GB 191417000A GB 191417000D A GB191417000D A GB 191417000DA GB 191417000 A GB191417000 A GB 191417000A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- arm
- movement
- additional
- spring
- 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
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Switches With Compound Operations (AREA)
Abstract
17,000. Black, G. J. F. July 17. Retractive switches are actuated by a lever handle having a compound movement, the first part of the forward movement causing an additional switch to be closed and opened. The additional action docs not take place during the return stroke. The lever A, Fig. 2, is pivoted by a pin 2 to the end of an horizontal rocking shaft 3 journaled in the cover 5 of a case 20. The first part of the movement of the lever takes place in a vertical plane against the force of a return spring 25, and a spring contact-arm 21 on the shaft 3 connects fixed contacts 23, 24 to complete an additional circuit. further movement carries the arm 21 past the contacts 23, 24 and the lever against a stop 8 so that a lateral projection a on the lever comes opposite the head of the push switch. By now moving the lever laterally on its pivot 2, the push switch can be closed as many times as desired. On the return stroke, the spring arm 21 rides over the outside of the contact 24 and does not complete the additional circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191417000T | 1914-07-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191417000A true GB191417000A (en) | 1915-09-17 |
Family
ID=32374544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191417000D Expired GB191417000A (en) | 1914-07-17 | 1914-07-17 | Improvements in and connected with Signalling in Mines. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191417000A (en) |
-
1914
- 1914-07-17 GB GB191417000D patent/GB191417000A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB655389A (en) | Improvements in or relating to electric switches of the push-push type | |
| GB191417000A (en) | Improvements in and connected with Signalling in Mines. | |
| GB243007A (en) | An improved electro-magnetic switch | |
| GB529136A (en) | Improvements in or relating to contact structures for electric circuit breakers | |
| US1351161A (en) | Switch | |
| GB658602A (en) | Improvements in operating mechanism for quick make and break electric switches | |
| USRE15152E (en) | Switch mechanism | |
| GB193252A (en) | Improvements in electric switches | |
| GB519605A (en) | Improvements in snap-action electric switches | |
| GB207956A (en) | Improvements in electric switch fuses | |
| GB190918471A (en) | Improvements in Electrical Switches. | |
| GB191161A (en) | Improvements in and relating to electric switches | |
| GB619936A (en) | Improvements relating to electric switches for cinematograph cameras | |
| GB496483A (en) | Portable electric drills and and the like | |
| GB197867A (en) | An improved electric switch | |
| GB783401A (en) | Improvements in and relating to an electric snap-action switch | |
| GB703018A (en) | Improvements relating to dolly-operated electric switches | |
| GB845382A (en) | Electric switch interposed in a mechanical linkage | |
| GB162858A (en) | Electric switches | |
| GB1277224A (en) | Electric switch mechanisms | |
| GB138866A (en) | Improvements in electric switches | |
| GB359431A (en) | Improvements in or relating to quick make and break electric switches | |
| GB212620A (en) | Improvements in or relating to electric switches | |
| GB191026009A (en) | Improvements in Electric Switches. | |
| GB218441A (en) | Improvements in and relating to electric switches, relays and the like |