GB244621A - Improvements in or relating to electrically controlled lifts - Google Patents
Improvements in or relating to electrically controlled liftsInfo
- Publication number
- GB244621A GB244621A GB747925A GB747925A GB244621A GB 244621 A GB244621 A GB 244621A GB 747925 A GB747925 A GB 747925A GB 747925 A GB747925 A GB 747925A GB 244621 A GB244621 A GB 244621A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lift
- cage
- arm
- operating
- cam
- 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
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/46—Adaptations of switches or switchgear
- B66B1/50—Adaptations of switches or switchgear with operating or control mechanisms mounted in the car or cage or in the lift well or hoistway
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Elevator Door Apparatuses (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
244,621. Fothergill, J. March 19, 1925. Lift cages and doors, locking and unlocking and operating.-Lock operating mechanism for lift doors of the kind in which the lock is operated by an arm moved by the cage is provided with means whereby the lift controlling circuit is opened and the lift stopped if the cage commences to move away from the doorway when the arm operating the locking mechanism fails to lock the door. The door bolt is held in the locked position by a spring pressed rod b which engages the bolt retaining lever and in turn is locked by a projection d on a spindle q, as described in Specification 242,144. The spindle q has a projection e carrying one contact of a switch a and also has an arm j carrying one contact of a switch f the other contact of which is carried by a pivoted extension c on the arm j, the extension being pressed outwards by a spring and adapted to be operated by a cam m on the cage. Two such switches are provided at each floor and are arranged in parallel and in the electrical control circuit of the lift. If the lift is started and the arm i fails to return the projection d to the locking position, then as the cage moves away from the doorway the cam m will release the extension c so that the switch f will be opened and the lift stopped. The cam may be attached to a solenoid in the electrical circuit so that the cage can move past any floor without operating the locking mechanism.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB747925A GB244621A (en) | 1925-03-19 | 1925-03-19 | Improvements in or relating to electrically controlled lifts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB747925A GB244621A (en) | 1925-03-19 | 1925-03-19 | Improvements in or relating to electrically controlled lifts |
Publications (1)
Publication Number | Publication Date |
---|---|
GB244621A true GB244621A (en) | 1925-12-24 |
Family
ID=9833892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB747925A Expired GB244621A (en) | 1925-03-19 | 1925-03-19 | Improvements in or relating to electrically controlled lifts |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB244621A (en) |
-
1925
- 1925-03-19 GB GB747925A patent/GB244621A/en not_active Expired
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