GB254641A - Improvements in and connected with guy derricks - Google Patents

Improvements in and connected with guy derricks

Info

Publication number
GB254641A
GB254641A GB631526A GB631526A GB254641A GB 254641 A GB254641 A GB 254641A GB 631526 A GB631526 A GB 631526A GB 631526 A GB631526 A GB 631526A GB 254641 A GB254641 A GB 254641A
Authority
GB
United Kingdom
Prior art keywords
guy
head
mast
derricks
caswell
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
Application number
GB631526A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caswell & Shearing Ltd
GEORGE FREDERICK CASWELL
Original Assignee
Caswell & Shearing Ltd
GEORGE FREDERICK CASWELL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Caswell & Shearing Ltd, GEORGE FREDERICK CASWELL filed Critical Caswell & Shearing Ltd
Priority to GB631526A priority Critical patent/GB254641A/en
Publication of GB254641A publication Critical patent/GB254641A/en
Expired legal-status Critical Current

Links

Classifications

    • 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

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Abstract

254,641. Caswell & Shearing, Ltd., and Caswell, G. F. March 6, 1926. Jib cranes.-In guy derrick cranes in which a rotatable mast 4 is stayed by guy ropes attached to a head 1 mounted on a main pin 3, the stress on the pin is reduced by interposing a roller or bearing block &c. between the mast and the head at a distance from the axis. As shown, a roller 6 is mounted in brackets 5 on the mast and bears on the under surface of the head.
GB631526A 1926-03-06 1926-03-06 Improvements in and connected with guy derricks Expired GB254641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB631526A GB254641A (en) 1926-03-06 1926-03-06 Improvements in and connected with guy derricks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB631526A GB254641A (en) 1926-03-06 1926-03-06 Improvements in and connected with guy derricks

Publications (1)

Publication Number Publication Date
GB254641A true GB254641A (en) 1926-07-08

Family

ID=9812255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB631526A Expired GB254641A (en) 1926-03-06 1926-03-06 Improvements in and connected with guy derricks

Country Status (1)

Country Link
GB (1) GB254641A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883068A (en) * 1955-07-14 1959-04-21 Humboldt Company Swivel jib for mobilized log yarders and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883068A (en) * 1955-07-14 1959-04-21 Humboldt Company Swivel jib for mobilized log yarders and the like

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