GB306572A - Improvements in pulley blocks - Google Patents
Improvements in pulley blocksInfo
- Publication number
- GB306572A GB306572A GB2785028A GB2785028A GB306572A GB 306572 A GB306572 A GB 306572A GB 2785028 A GB2785028 A GB 2785028A GB 2785028 A GB2785028 A GB 2785028A GB 306572 A GB306572 A GB 306572A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulley
- coacting
- pendulum
- concentric
- pivot
- 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
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
- B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
- B66D3/10—Applications of braking or detent devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Emergency Lowering Means (AREA)
Abstract
306,572. Johansson, C. A. Sept. 28, 1928. Window appliances.- A pulley furnished with means for retarding the descent of the load and suitable for use as a fire escape, comprises a pendulum 5 pivoted at 4 near its lower end and coacting at its upper end with a guide 7 concentric with the pivot, and a starwheel 10 integral with the pulley 9 and coacting with a guide 11 having contact parts 12 concentric with the pivot 4 and a recess 13 of sufficient size to permit the turning of the wheel during the oscillations of the pendulum. The rope 16 is prevented from slipping by rollers 14, 15. Specification 6451/14 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2785028A GB306572A (en) | 1928-09-28 | 1928-09-28 | Improvements in pulley blocks |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2785028A GB306572A (en) | 1928-09-28 | 1928-09-28 | Improvements in pulley blocks |
Publications (1)
Publication Number | Publication Date |
---|---|
GB306572A true GB306572A (en) | 1929-03-07 |
Family
ID=10266311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2785028A Expired GB306572A (en) | 1928-09-28 | 1928-09-28 | Improvements in pulley blocks |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB306572A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105804484A (en) * | 2016-02-17 | 2016-07-27 | 浙江省送变电工程公司 | Anti-wear and anti-groove-skipping tool for ground pulley blocks for lifting high tower derrick and using method |
-
1928
- 1928-09-28 GB GB2785028A patent/GB306572A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105804484A (en) * | 2016-02-17 | 2016-07-27 | 浙江省送变电工程公司 | Anti-wear and anti-groove-skipping tool for ground pulley blocks for lifting high tower derrick and using method |
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