GB864062A - Improvements in and relating to cranes - Google Patents
Improvements in and relating to cranesInfo
- Publication number
- GB864062A GB864062A GB1138656A GB1138656A GB864062A GB 864062 A GB864062 A GB 864062A GB 1138656 A GB1138656 A GB 1138656A GB 1138656 A GB1138656 A GB 1138656A GB 864062 A GB864062 A GB 864062A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheaves
- ropes
- cranes
- rollers
- grab
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D413/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D413/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings
- C07D413/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/66—Outer or upper end constructions
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
864,062. Jib cranes. NORTH THAMES GAS BOARD. July 15, 1957 [April 13, 1956] No. 11386/56. Classes 78 (4) and 78 (5). Ropes 14 (Fig. 1) passing between the head of the jib of a crane and sheaves 13 on the mast are held on the sheaves by pairs of grooved rollers 22, 23 (Fig. 2) carried by a pivoted and counter-weighted bracket 19 and disposed so that the rope passes over one roller and under the other to reach the sheave. The slewing and luffing crane illustrated has two ropes 14, 141 for hoisting and opening a grab, and the corresponding rollers 22, 23 and 22<SP>1</SP>, 23<SP>1</SP> are carried by a pair of shafts 20, 21 supported by opposed brackets 19, 191 from levers 17, 171 pivoted on the shaft 16 of the sheaves 13, 13<SP>1</SP>. The rollers are disposed so as to cause no appreciable deviation of the ropes 14, 14<SP>1</SP>. According to the Provisional Specification the invention may be applied to grab scrapers and other apparatus as well as to cranes; this subject-matter does not appear in the Complete Specification.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1138656A GB864062A (en) | 1956-04-13 | 1956-04-13 | Improvements in and relating to cranes |
NL216356A NL97978C (en) | 1956-04-13 | 1957-04-15 | |
FR739359A FR1215537A (en) | 1956-04-13 | 1957-05-24 | Process for the preparation of 3- (5'-nitrofurfurylidene) -amino-2-oxazolidinone |
BE565801A BE565801A (en) | 1956-04-13 | 1958-03-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1138656A GB864062A (en) | 1956-04-13 | 1956-04-13 | Improvements in and relating to cranes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB864062A true GB864062A (en) | 1961-03-29 |
Family
ID=9985268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1138656A Expired GB864062A (en) | 1956-04-13 | 1956-04-13 | Improvements in and relating to cranes |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE565801A (en) |
FR (1) | FR1215537A (en) |
GB (1) | GB864062A (en) |
NL (1) | NL97978C (en) |
-
1956
- 1956-04-13 GB GB1138656A patent/GB864062A/en not_active Expired
-
1957
- 1957-04-15 NL NL216356A patent/NL97978C/xx active
- 1957-05-24 FR FR739359A patent/FR1215537A/en not_active Expired
-
1958
- 1958-03-18 BE BE565801A patent/BE565801A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
BE565801A (en) | 1958-04-15 |
NL97978C (en) | 1961-05-15 |
FR1215537A (en) | 1960-04-19 |
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