GB106419A - Improvements in Cranes. - Google Patents

Improvements in Cranes.

Info

Publication number
GB106419A
GB106419A GB1588416A GB1588416A GB106419A GB 106419 A GB106419 A GB 106419A GB 1588416 A GB1588416 A GB 1588416A GB 1588416 A GB1588416 A GB 1588416A GB 106419 A GB106419 A GB 106419A
Authority
GB
United Kingdom
Prior art keywords
drum
jib
shaft
luffing
wheel
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
GB1588416A
Inventor
Arthur Fairbank Hainsworth
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1588416A priority Critical patent/GB106419A/en
Publication of GB106419A publication Critical patent/GB106419A/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
    • B66C23/06—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 with jibs mounted for jibbing or luffing movements
    • B66C23/08—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths
    • B66C23/10—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 with jibs mounted for jibbing or luffing movements and adapted to move the loads in predetermined paths the paths being substantially horizontal; Level-luffing jib-cranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0307—Cranes in which it is essential that the load is moving horizontally during the luffing movement of the arm or jib

Landscapes

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

Abstract

106,419. Hainsworth, A. F. Nov. 7, 1916. Jib cranes.-In a luffing-crane in which the luffing-drum is driven from the hoisting-barrel shaft by chain or toothed gear, the luffing-drum is fitted with an axial-pressure self-sustaining brake for preventing the jib from running down. The hoisting-drum A is connected through a clutch and chain- and-sprocket or spur gearing to the shaft J, on a threaded portion of which the luffing-drum B is mounted. When the clutch is in gear for derricking inwards, the drums are rotated together, and the load travels substantially horizontally. The weight of the jib causes the drum B to exert axial pressure on a ratchet-wheel G which is held by a pawl K, thus preventing the jib from falling. The pawl K is frictionally mounted on a shaft L driven by a spur wheel H on the shaft J. When the luffing-drum is rotated in the direction for hoisting the jib, the axial pressure on the ratchet-wheel G is increased, and the reverse rotation of the shaft L withdraws the pawl K from the ratchet-wheel G. When lowering the jib, the rotation of the shaft J eases the pressure on the ratchet-wheel, which is then held by the pawl K.
GB1588416A 1916-11-07 1916-11-07 Improvements in Cranes. Expired GB106419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1588416A GB106419A (en) 1916-11-07 1916-11-07 Improvements in Cranes.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1588416A GB106419A (en) 1916-11-07 1916-11-07 Improvements in Cranes.

Publications (1)

Publication Number Publication Date
GB106419A true GB106419A (en) 1917-05-24

Family

ID=32249663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1588416A Expired GB106419A (en) 1916-11-07 1916-11-07 Improvements in Cranes.

Country Status (1)

Country Link
GB (1) GB106419A (en)

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