GB191226279A - Improvements in or relating to Cranes and other Hoisting Apparatus. - Google Patents
Improvements in or relating to Cranes and other Hoisting Apparatus.Info
- Publication number
- GB191226279A GB191226279A GB191226279DA GB191226279A GB 191226279 A GB191226279 A GB 191226279A GB 191226279D A GB191226279D A GB 191226279DA GB 191226279 A GB191226279 A GB 191226279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- motor
- motors
- pipes
- hoisting
- 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
- B66D1/02—Driving gear
- B66D1/08—Driving gear incorporating fluid motors
-
- 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
- B66D2700/0133—Fluid actuated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
26,279. Variable Speed Gear, Ltd., and Robson, J. Nov. 15. Jib cranes. - Relates to cranes wherein one or more hydraulic motors are employed for effecting the various operations, the motors being worked from a pump which supplies pressure liquid to the motors at varying rates of flow. The pump and motor are preferably constituted by the pump and motor units of a variable hydraulic transmission gear. This may be of the kind having a cylinder barrel having a number of parallel cylinders for the reception of pistons provided with piston-rods pivotally connected to the pistons and to a plate carried by a tilting box, which in the case of a pump unit is displaceable to vary the direction and flow of the liquid. Fig. 1 shows the invention applied to a floating crane driven by one propeller and having a fixed jib. The prime mover A' is coupled to the pump A, from the valve plate of which pipes a, a<1> lead to distributing-valves a<Î>, a<Î>, from which pipes b, b<1> and c, c<1> are led to the valve plates of the motor units B, C respectively. The valves a<Î>, a<Î> are similar and are connected together to occupy similar positions. In Fig. 2, the valve a<Î> is shown in position for supplying fluid to the motor C" for hoisting, and in Fig. 3 to the propelling-motor B. The drums C<1>, C<2> are driven from the motor through suitable gearing for hoisting light and heavy loads respectively, a clutch c<2> being operated to clutch in either drum. A double-acting relief and by-pass valve is fitted between the suction and delivery pipes of the pump. The control is effected by operating the tilting box of the pump and the valves a<Î>, a<Î>. In a modification shown in Fig. 4, the floating crane is fitted with two propellers. In this case, two pump units A are driven by one or more prime movers A<1>. Pipes lead from the pumps to propelling and hoisting motors B, C. Two hoisting-drums C<1>, C<2> are provided as before and are driven through reducing-gearing so arranged that one or both motors may operate the drum C<2> for heavy loads, while one motor may be clutched to the drum C<1> for light loads. Equalizing-pipes A<3> connect the distributing and suction pipes and are fitted with stop-cocks A<3Î>. In a further modification, the floating crane has one propeller and a movable jib. In this case, one motor drives the hoisting-drum at two speeds through a clutch and spur gear while the other motor drives the drum for operating the jib. In a still further modification, there are two propelling-motors and a movable jib, two drums onlv being used. Specification 23,369/12 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB191226279T | 1912-11-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB191226279A true GB191226279A (en) | 1913-11-13 |
Family
ID=32574932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB191226279D Expired GB191226279A (en) | 1912-11-15 | 1912-11-15 | Improvements in or relating to Cranes and other Hoisting Apparatus. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB191226279A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2486049A (en) * | 1945-12-06 | 1949-10-25 | Ernest C C Miller | Hydraulic propulsion system for boats |
US2509321A (en) * | 1946-07-19 | 1950-05-30 | Gulf Research Development Co | Rotary fluid unit for take-off under variable control |
US2552705A (en) * | 1945-03-26 | 1951-05-15 | Joy Mfg Co | Mining machine feeding mechanism |
US2573382A (en) * | 1948-01-10 | 1951-10-30 | Clyde E Bannister | Portable oscillating propeller assembly |
US2891771A (en) * | 1955-07-05 | 1959-06-23 | Youngstown Sheet And Tube Co | Hydraulically driven rotary machine |
US3285011A (en) * | 1960-02-25 | 1966-11-15 | Eastern Res Group | Hydraulic torque conversion apparatus |
US20210362988A1 (en) * | 2020-05-19 | 2021-11-25 | Greenlee Tools, Inc. | High capacity cable puller with multi-speed automatic shifting transmission |
-
1912
- 1912-11-15 GB GB191226279D patent/GB191226279A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2552705A (en) * | 1945-03-26 | 1951-05-15 | Joy Mfg Co | Mining machine feeding mechanism |
US2486049A (en) * | 1945-12-06 | 1949-10-25 | Ernest C C Miller | Hydraulic propulsion system for boats |
US2509321A (en) * | 1946-07-19 | 1950-05-30 | Gulf Research Development Co | Rotary fluid unit for take-off under variable control |
US2573382A (en) * | 1948-01-10 | 1951-10-30 | Clyde E Bannister | Portable oscillating propeller assembly |
US2891771A (en) * | 1955-07-05 | 1959-06-23 | Youngstown Sheet And Tube Co | Hydraulically driven rotary machine |
US3285011A (en) * | 1960-02-25 | 1966-11-15 | Eastern Res Group | Hydraulic torque conversion apparatus |
US20210362988A1 (en) * | 2020-05-19 | 2021-11-25 | Greenlee Tools, Inc. | High capacity cable puller with multi-speed automatic shifting transmission |
US11713224B2 (en) * | 2020-05-19 | 2023-08-01 | Greenlee Tools, Inc. | High capacity cable puller with multi-speed automatic shifting transmission |
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