GB890312A - Improvements in moving staircases, escalators and like passenger conveying installations - Google Patents
Improvements in moving staircases, escalators and like passenger conveying installationsInfo
- Publication number
- GB890312A GB890312A GB2740759A GB2740759A GB890312A GB 890312 A GB890312 A GB 890312A GB 2740759 A GB2740759 A GB 2740759A GB 2740759 A GB2740759 A GB 2740759A GB 890312 A GB890312 A GB 890312A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- pawl
- escalator
- discs
- reverse
- 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
- B66B29/00—Safety devices of escalators or moving walkways
Landscapes
- Braking Arrangements (AREA)
- Escalators And Moving Walkways (AREA)
Abstract
890,312. Escalators. RHEINSTAHL HAMBURG STAHLBAU EGGERS & FRIEDRICH KEHRHAHN G.m.b.H. Aug. 11, 1959, No. 27407/59. Class 78 (1). In an escalator provided with a service brake and an emergency brake, the emergency brake is adapted to be operated if the escalator is unintentionally run in reverse, but is not operated when it is intentionally run in reverse. For this purpose two discs 1, 1<SP>1</SP> are mounted to rotate together on a shaft driven by the escalator drive, the discs having notches 1a, 1b respectively, the latter being adapted to be engaged by a pawl 2<SP>1</SP> on a lever 2 whilst the former are engaged by a roller 3 carried by the pawl and resting by gravity on the disc 1. Lever 2 is pivoted to a two-armed lever 5, 5<SP>1</SP> pivotally mounted at S and connected by a cable 6 with a control for brake-actuator motor 7. A compression spring 11 normally holds lever 5, 5<SP>1</SP> in the position shown. When the escalator travels forwards discs 1, 1<SP>1</SP> rotate in direction a so that pawl 2<SP>1</SP> cannot engage notches 1b, the speed of rotation of the discs being such that roller 3 engaging disc 1 maintains pawl 2<SP>1</SP> clear of the disc 1<SP>1</SP>. When the escalator unintentionally runs in reverse pawl 2<SP>1</SP> engages one of the notches 1b so that lever 2 is moved and with the assistance of spring 11 now acting over centre turns lever 5, 5<SP>1</SP> to actuate the control for motor 7 to apply the emergency brake. When the escalator is intentionally run in reverse a solenoid 9 is actuated to raise a pin 10 which lifts lever 2 sufficiently for pawl 2<SP>1</SP> to remain clear of the notches 1b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2740759A GB890312A (en) | 1959-08-11 | 1959-08-11 | Improvements in moving staircases, escalators and like passenger conveying installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2740759A GB890312A (en) | 1959-08-11 | 1959-08-11 | Improvements in moving staircases, escalators and like passenger conveying installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB890312A true GB890312A (en) | 1962-02-28 |
Family
ID=10259071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2740759A Expired GB890312A (en) | 1959-08-11 | 1959-08-11 | Improvements in moving staircases, escalators and like passenger conveying installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB890312A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515008A (en) * | 2011-12-13 | 2012-06-27 | 江南嘉捷电梯股份有限公司 | Safety device for detecting ascending reversal of escalator |
-
1959
- 1959-08-11 GB GB2740759A patent/GB890312A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102515008A (en) * | 2011-12-13 | 2012-06-27 | 江南嘉捷电梯股份有限公司 | Safety device for detecting ascending reversal of escalator |
| CN102515008B (en) * | 2011-12-13 | 2013-11-13 | 江南嘉捷电梯股份有限公司 | Safety device for detecting ascending reversal of escalator |
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