GB330313A - Improvements in or relating to safety locks for use in lift installations - Google Patents
Improvements in or relating to safety locks for use in lift installationsInfo
- Publication number
- GB330313A GB330313A GB809029A GB809029A GB330313A GB 330313 A GB330313 A GB 330313A GB 809029 A GB809029 A GB 809029A GB 809029 A GB809029 A GB 809029A GB 330313 A GB330313 A GB 330313A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lift
- catch
- arm
- spring
- doors
- 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
- B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
- B66B13/02—Door or gate operation
- B66B13/14—Control systems or devices
- B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
- B66B13/18—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position without manually-operable devices for completing locking or unlocking of doors
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Lock And Its Accessories (AREA)
Abstract
330,313. Medway's Safety Lift Co., Ltd., and Corbett, J. March 12, 1929. Addition to 309,396. Lift doors, locking and unlocking. -Relates to fastenings for lift doors which are unlocked by a ramp &c. so as to yield to definite pressure and which operate an electric switch in the control circuit so that the lift cannot be moved unless the doors are in the locked position. The fixed switch-operating member of the parent case is omitted and the switch is operated by the pivoted catch member. The catch member 5 biassed by a spring 6 and mounted on the door 1 is adapted to enter a slot in a casing fixed to the lintel and snap behind an inclined fixed surface 18. When the lift is moved, a stop member 21 carried by a spring- biassed rocking shaft 19 moves into the position shown behind the stepped end 22 of catch 5 and positively holds it in engagement with surface 18. At a landing stage &c. the arm is rocked by a ramp (not shown) engaging a roller arm 20 to release the catch. The inner end of the catch engages, in the locking position, one arm of a pivoted lever 23, the other arm of which carries a spring-mounted insulated contact 24 adapted to bridge contacts 26 in the control &c. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB809029A GB330313A (en) | 1929-03-12 | 1929-03-12 | Improvements in or relating to safety locks for use in lift installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB809029A GB330313A (en) | 1929-03-12 | 1929-03-12 | Improvements in or relating to safety locks for use in lift installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB330313A true GB330313A (en) | 1930-06-12 |
Family
ID=9845558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB809029A Expired GB330313A (en) | 1929-03-12 | 1929-03-12 | Improvements in or relating to safety locks for use in lift installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB330313A (en) |
-
1929
- 1929-03-12 GB GB809029A patent/GB330313A/en not_active Expired
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