GB111421A - Improvements in Pulley-block Hoisting and Lowering Gear. - Google Patents
Improvements in Pulley-block Hoisting and Lowering Gear.Info
- Publication number
- GB111421A GB111421A GB542417A GB542417A GB111421A GB 111421 A GB111421 A GB 111421A GB 542417 A GB542417 A GB 542417A GB 542417 A GB542417 A GB 542417A GB 111421 A GB111421 A GB 111421A
- Authority
- GB
- United Kingdom
- Prior art keywords
- brake
- load
- drum
- pulley
- chain
- 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
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
111,421. Pearson, J., and Parker, L. E. April 18, 1917. Brakes for paying-out apparatus; regulating; self-sustaining gear. - In pulley-block hoisting and lowering gear, the weight of the load is transmitted to two segmental brake bands, of which one is always in contact with the brake drum and the other can be moved out of contact at will. One end of the chain a which supports the usual pulley block (not shown) is attached to a lever b which is pivoted at the end c and at the other bears upon a bar g connecting the arms h<1>, i<1> of the pivoted brake bands h, i. The brake i always bears against the drum j, but the brake h can be taken off by rotating the shaft n thereby forcing a roller l against a projection k at the upper end of the band. The shaft n is rotated in one direction by pulling a chain &c. attached to the lever o, and in the other by a weight s or spring. The hoisting chain wheel (not shown) is discon. nected from the first-motion spindle p when the brake is released to lower the load by a scroll on the quadrant g moving the clutch member r. Running back of the load is prevented by pawls u carried by radius arms, or by a disk v, secured to the spindle p which engage ratchet teeth t on the inner face of the drum j.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB542417A GB111421A (en) | 1917-04-18 | 1917-04-18 | Improvements in Pulley-block Hoisting and Lowering Gear. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB542417A GB111421A (en) | 1917-04-18 | 1917-04-18 | Improvements in Pulley-block Hoisting and Lowering Gear. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB111421A true GB111421A (en) | 1917-11-29 |
Family
ID=32245531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB542417A Expired GB111421A (en) | 1917-04-18 | 1917-04-18 | Improvements in Pulley-block Hoisting and Lowering Gear. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB111421A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582057A (en) * | 2021-08-10 | 2021-11-02 | 常州大学 | Self-protection type hoisting crane |
-
1917
- 1917-04-18 GB GB542417A patent/GB111421A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582057A (en) * | 2021-08-10 | 2021-11-02 | 常州大学 | Self-protection type hoisting crane |
| CN113582057B (en) * | 2021-08-10 | 2022-09-09 | 常州大学 | Self-protection type hoisting crane |
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