GB299874A - Improvement in elevator safety appliance - Google Patents
Improvement in elevator safety applianceInfo
- Publication number
- GB299874A GB299874A GB30205/28A GB3020528A GB299874A GB 299874 A GB299874 A GB 299874A GB 30205/28 A GB30205/28 A GB 30205/28A GB 3020528 A GB3020528 A GB 3020528A GB 299874 A GB299874 A GB 299874A
- Authority
- GB
- United Kingdom
- Prior art keywords
- jaws
- rails
- engage
- cage
- jaw
- 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
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
299,874. Waygood-Otis, Ltd., (Assignees of Hymans, F.). Nov. 4. 1927, [Convention date]. Skid brakes. - A safety appliance for lifts of the kind acting on the occurrence of overspeed and in which braking jaws on the cage are adapted to grip stationary rails in the well, comprises braking jaws provided with anti - friction means such as a roller to temporarily engage the rail and cause full engagement of the jaws. The braking jaws 73, Fig. 5, are mounted on a spindle 75, one jaw carying a brake shoe 88 with a curved part fitting a similar recess 87 in the jaw and the other jaw having a cylindrical recess 81, Fig. 3, in which a wedge 82 fits. A wedge-shaped shoe 93 slides along the wedge 82 and at one end is linked to a crank 66 and at the other end is linked to a roller 97. A spring 100 is fitted between the longer arms of the jaws. In operation, if the cage overspeeds the governor causes a clutch to hold the governor rope, a release arm is freed and the crank 66 swings upwards. As the crank moves upwards the rollers engage the rails and slide up the wedges 82 until the shoes 88 engage the rails, the spring 100 is compressed and the rollers move on to the upper outwardly sloping parts of the wedges 82 so that the shoes 93 engage the, rails and the cage is stopped.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US299874XA | 1927-11-04 | 1927-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB299874A true GB299874A (en) | 1929-10-10 |
Family
ID=21851944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30205/28A Expired GB299874A (en) | 1927-11-04 | 1928-10-18 | Improvement in elevator safety appliance |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB299874A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966949A (en) * | 2010-10-29 | 2011-02-09 | 江南嘉捷电梯股份有限公司 | Elevator safety structure |
| CN103318721A (en) * | 2012-03-21 | 2013-09-25 | 株式会社日立制作所 | Elevator apparatus |
| CN109532936A (en) * | 2018-12-29 | 2019-03-29 | 河北省安全生产监督管理局安全科学技术中心(河北省危险化学品登记注册办公室) | The anti-race accident-free vehicle of inclined shaft hoisting automatic braking |
| EP3286123B1 (en) | 2015-04-21 | 2020-04-08 | thyssenkrupp Stairlifts B.V. | Stair lift |
| CN111776913A (en) * | 2020-07-20 | 2020-10-16 | 台州学院 | Bent lever type anti-failure elevator safety tongs and elevator |
-
1928
- 1928-10-18 GB GB30205/28A patent/GB299874A/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966949A (en) * | 2010-10-29 | 2011-02-09 | 江南嘉捷电梯股份有限公司 | Elevator safety structure |
| CN103318721A (en) * | 2012-03-21 | 2013-09-25 | 株式会社日立制作所 | Elevator apparatus |
| EP3286123B1 (en) | 2015-04-21 | 2020-04-08 | thyssenkrupp Stairlifts B.V. | Stair lift |
| CN109532936A (en) * | 2018-12-29 | 2019-03-29 | 河北省安全生产监督管理局安全科学技术中心(河北省危险化学品登记注册办公室) | The anti-race accident-free vehicle of inclined shaft hoisting automatic braking |
| CN109532936B (en) * | 2018-12-29 | 2023-09-22 | 河北省应急管理科学研究院(河北省危险化学品登记注册中心) | Inclined shaft lifting automatic braking anti-running safety vehicle |
| CN111776913A (en) * | 2020-07-20 | 2020-10-16 | 台州学院 | Bent lever type anti-failure elevator safety tongs and elevator |
| CN111776913B (en) * | 2020-07-20 | 2021-11-19 | 台州学院 | Bent lever type anti-failure elevator safety tongs and elevator |
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