GB1322744A - Cable drum assemblies - Google Patents
Cable drum assembliesInfo
- Publication number
- GB1322744A GB1322744A GB1322744DA GB1322744A GB 1322744 A GB1322744 A GB 1322744A GB 1322744D A GB1322744D A GB 1322744DA GB 1322744 A GB1322744 A GB 1322744A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- cable
- drum
- spring
- drums
- 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
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/26—Rope, cable, or chain winding mechanisms; Capstans having several drums or barrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D2700/00—Capstans, winches or hoists
- B66D2700/01—Winches, capstans or pivots
- B66D2700/0125—Motor operated winches
- B66D2700/0166—Winches with multiple drums or with drums with multiple parts of different diameter
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
Abstract
1322744 Spring drum apparatus; counterbalancing; winches OVERHEAD DOOR CORP 5 Oct 1970 47218/70 Heading B8B [Also in Division E2] A pair of cable drums 6, 6<SP>1</SP> for counterbalance cables 10, 10<SP>1</SP> of a liftable door have a counterbalancing torque applied thereto by a torsion spring 25, a lost motion rotatable coupling 21, 22 for each drum delaying any accumulation of slack cable should the load in either cable be relieved. Each drum is independently loaded by a spring 34 in the cable wind up direction to tension any slack cable, within the limits of the couplings 22, 21. The torsion spring 25 has one end secured to the door surround structure 29 and the other end adjustably locked to a shaft 1 to facilitate setting the initial spring tension. The drums are freely rotatably mounted on the shaft 1 and each has an arcuate projection 22 engageable with an arcuate projection 21 of a sleeve 19 locked to the shaft 1 to facilitate drum drive, an arcuate gap between the two projections permitting the lost motion in the drive. In a further embodiment, the drums are rigidly secured to the shaft and the lost motion coupling is formed within the shaft. In other embodiments the counterbalancing torque is provided by weights or drive motors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4721870 | 1970-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1322744A true GB1322744A (en) | 1973-07-11 |
Family
ID=10444185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1322744D Expired GB1322744A (en) | 1970-10-05 | 1970-10-05 | Cable drum assemblies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1322744A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2263728A (en) * | 1992-01-30 | 1993-08-04 | Whiting Roll Up Door Mfg Corp | Spring balancer for a roll-up door |
| EP2295365A3 (en) * | 2000-07-28 | 2011-06-15 | Daktronics Hoist, Inc. | Modular lift assembly |
| CN110077899A (en) * | 2019-04-28 | 2019-08-02 | 建德市勇华电器有限公司 | A kind of caravan electric wire apparatus for spooling thread-like products |
-
1970
- 1970-10-05 GB GB1322744D patent/GB1322744A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2263728A (en) * | 1992-01-30 | 1993-08-04 | Whiting Roll Up Door Mfg Corp | Spring balancer for a roll-up door |
| GB2263728B (en) * | 1992-01-30 | 1995-04-19 | Whiting Roll Up Door Mfg Corp | Spring balancer for a roll-up door |
| EP2295365A3 (en) * | 2000-07-28 | 2011-06-15 | Daktronics Hoist, Inc. | Modular lift assembly |
| CN110077899A (en) * | 2019-04-28 | 2019-08-02 | 建德市勇华电器有限公司 | A kind of caravan electric wire apparatus for spooling thread-like products |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |