GB525340A - Improvements in and relating to electric hoists - Google Patents
Improvements in and relating to electric hoistsInfo
- Publication number
- GB525340A GB525340A GB5406/39A GB540639A GB525340A GB 525340 A GB525340 A GB 525340A GB 5406/39 A GB5406/39 A GB 5406/39A GB 540639 A GB540639 A GB 540639A GB 525340 A GB525340 A GB 525340A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- pinion
- motor
- shaft
- disc
- 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
- B66D3/18—Power-operated hoists
- B66D3/20—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing
- B66D3/22—Power-operated hoists with driving motor, e.g. electric motor, and drum or barrel contained in a common housing with variable-speed gearings between driving motor and drum or barrel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
525,340. Electric hoists. YALE & TOWNE MANUFACTURING CO. Feb. 17, 1939, No. 5406. Convention date, Oct. 20, 1938. [Class 78 (v)] An electric hoist comprises a winding drum 25 keyed to a sleeve 22 carrying a pinion 28 which is driven through gearing 30, 34, 36 from a co-axial shaft 21 coupled to a motor shaft 19. The pinion 34 is internally threaded to ride on its shaft 35 against a friction disc 33 which carries a pinion of the gear train, gripping in this action a ratchet wheel 31 held by a spring- pressed pawl 32, which normally sustains the load when the motor stops. On reversing the motor the pinion 34 retracts from the disc 33, thus freeing the wheel 31 and allowing the load to fall. A rate of fall greater than that determined by the motor speed will, however, result in the disc 33 and pinion 34 being brought toward one another again, with binding of, and effective pawl action on, the wheel 31. The outer end of the shaft 21 carries the drum 37 of a band brake, the bands being normally spring- pressed on to the drum exterior, but having their ends forceable apart. by a cam 40 on a shaft 45 rockable by the core 43 of a solenoid in the motor circuit. The inside of the brake drum 37 is furnished with vanes which draw air in through louvres 47 to cool the drum and adjacent parts, an exhaust vent 47a being provided below the casing. The hoist has bolt-eyes 11 for suspension from a trolley, and the cable 48 passes round a sheave 49 for attachment to the drum casing. Hand-operated switches control the motor and brake solenoid, and a pivoted lever 55 extends across the path of the rising sheave to shut off the power automatically at the end of the wind.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US525340XA | 1938-10-20 | 1938-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB525340A true GB525340A (en) | 1940-08-27 |
Family
ID=21978235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5406/39A Expired GB525340A (en) | 1938-10-20 | 1939-02-17 | Improvements in and relating to electric hoists |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB525340A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2645138A1 (en) * | 1989-04-04 | 1990-10-05 | Mannesmann Ag | COMPACT LIFTING EQUIPMENT |
CN113860163A (en) * | 2021-11-01 | 2021-12-31 | 深圳市瑞吉斯科技有限公司 | Hoisting device |
-
1939
- 1939-02-17 GB GB5406/39A patent/GB525340A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2645138A1 (en) * | 1989-04-04 | 1990-10-05 | Mannesmann Ag | COMPACT LIFTING EQUIPMENT |
CN113860163A (en) * | 2021-11-01 | 2021-12-31 | 深圳市瑞吉斯科技有限公司 | Hoisting device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB525340A (en) | Improvements in and relating to electric hoists | |
GB1177663A (en) | Hoist Utilizing a Weston Brake Mechanism. | |
US2315628A (en) | Hoisting apparatus | |
US2380801A (en) | Winch cable guide | |
GB508067A (en) | Improvements in and relating to electric devices for operating hoists, cranes and the like | |
US1506341A (en) | Motor brake for electric hoists | |
GB1148995A (en) | Cable Winch Assembly | |
CN203976274U (en) | A kind of Electric Chain Blocks | |
CN107473110A (en) | For starting the steel wire rope manual and electric dual-purpose cucurbit of subway closed guard gate's Flood gate | |
GB181180A (en) | Improvements in or relating to winches and the like hoisting apparatus | |
GB1246911A (en) | Improvements in or relating to mechanical systems for the remote control of davit winch hand brakes | |
GB612084A (en) | Improvements in or relating to mechanism for lifting and lowering cradles | |
GB747428A (en) | Improvements relating to winches | |
GB651485A (en) | Improvements in or relating to hoists | |
GB338623A (en) | Improvements in capstans, winches, or winding apparatus | |
GB274515A (en) | Improvements in capstans | |
GB391316A (en) | Improvements in brake for hoists | |
CN116588847A (en) | Electromagnetic braking winch | |
GB1110260A (en) | A double coiling arrangement, particularly for metal wire | |
GB314347A (en) | Improvements in and relating to hoists | |
DE1152517B (en) | Safety brake for hoists | |
GB545809A (en) | Improvements in or relating to mechanical power transmission apparatus for lift systems | |
GB504329A (en) | Improvements in winches and particularly in those used for launching and raising lifeboats for ships | |
AT96304B (en) | Hoist driven by an AC induction motor. | |
GB553870A (en) | Improvements in and relating to hoists |