GB700104A - Improvements in and relating to cranes - Google Patents

Improvements in and relating to cranes

Info

Publication number
GB700104A
GB700104A GB2975250A GB2975250A GB700104A GB 700104 A GB700104 A GB 700104A GB 2975250 A GB2975250 A GB 2975250A GB 2975250 A GB2975250 A GB 2975250A GB 700104 A GB700104 A GB 700104A
Authority
GB
United Kingdom
Prior art keywords
plates
post
engage
friction
jib
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
GB2975250A
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.)
British Hoist & Crane Co
Original Assignee
British Hoist & Crane Co
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 British Hoist & Crane Co filed Critical British Hoist & Crane Co
Priority to GB2975250A priority Critical patent/GB700104A/en
Publication of GB700104A publication Critical patent/GB700104A/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
    • B66C23/18—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 specially adapted for use in particular purposes
    • B66C23/20—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 specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures
    • B66C23/203—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 specially adapted for use in particular purposes with supporting couples provided by walls of buildings or like structures with supporting couples provided by posts, e.g. scaffolding, trees or masts

Abstract

700,104. Jib cranes. BRITISH HOIST & CRANE CO., Ltd., and EVANS, P. N. Dec. 5, 1951 [Dec. 5, 1950], No. 29752/50. Class 78 (4). A jib crane comprises a post-like support carrying a winch and a motor forming a unit slueable about a vertical fixed post whilst supported by the post only intermediate its ends. The jib arms 25, Fig. 1, are pivoted to plates 17 welded to a horizontal bar 12 welded to a support 13, and to tie bars 28 having holes 30 for adjustably bolting to a head piece 16. Clamps 14, 15 with closure stops 37 are provided at the bottom and top of the support 13 for securing to an upright post 36 which may be secured to scaffolding, the clamp 14 resting on a clamp 35 on the upright post. The plates 17 are connected by a cross bar 18 which has a handle 20 for slueing. The bar 18 carries two vertical plates 19 which are also connected by a shaft 21 having lugs 22 bolted to plates 17. A motor 43 is mounted between the plates 19 and provides an adjustable drive for friction pinions which can engage friction rollers 41 on the shaft of the winch 23 which is mounted on eccentric bearings. A lever 40 is operated to engage the friction rollers with the friction pinions against the action of a spring which urges the rollers to engage stationary brake shoes.
GB2975250A 1950-12-05 1950-12-05 Improvements in and relating to cranes Expired GB700104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2975250A GB700104A (en) 1950-12-05 1950-12-05 Improvements in and relating to cranes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2975250A GB700104A (en) 1950-12-05 1950-12-05 Improvements in and relating to cranes

Publications (1)

Publication Number Publication Date
GB700104A true GB700104A (en) 1953-11-25

Family

ID=10296599

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2975250A Expired GB700104A (en) 1950-12-05 1950-12-05 Improvements in and relating to cranes

Country Status (1)

Country Link
GB (1) GB700104A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806599C1 (en) * 1988-03-02 1989-09-21 Helmut Kempkes Gmbh, 5630 Remscheid, De Building crane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3806599C1 (en) * 1988-03-02 1989-09-21 Helmut Kempkes Gmbh, 5630 Remscheid, De Building crane

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