GB195331A - Improvements in pulley blocks - Google Patents

Improvements in pulley blocks

Info

Publication number
GB195331A
GB195331A GB2875922A GB2875922A GB195331A GB 195331 A GB195331 A GB 195331A GB 2875922 A GB2875922 A GB 2875922A GB 2875922 A GB2875922 A GB 2875922A GB 195331 A GB195331 A GB 195331A
Authority
GB
United Kingdom
Prior art keywords
wheel
worm
self
screw
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
Application number
GB2875922A
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 GB2875922A priority Critical patent/GB195331A/en
Publication of GB195331A publication Critical patent/GB195331A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear Transmission (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)

Abstract

195,331. Vaughan, W. H., and Wood, F. Oct. 23, 1922. Geared pulley hoists; self-sustaining gear.- Comprises an arrangement of self-sustaining gear, with partial release for braked lowering, in pulleyhoists of the type driven by worm gearing and provided with self-sustaining gear comprising ratchet-and-pawl mechanism carried on the worm shaft. The rotation of the hand chain wheel F in the direction for hoisting moves it outwards laterally on the screw D until dogs e, f engage to drive the worm, the thread on which is of the opposite hand to that on the screw D. During hoisting the load thrust on the worm jams the friction disc K and ratchet wheel L together, so that they rotate as one member. When hoisting ceases, the wheel L is held by a pawl, and the friction between the members K, L sustains the load. On rotating the hand-wheel F in the direction for lowering, the wheel moves inwards on the screw and by thrusting against the steel washer g moves the worm shaft axially sufficiently to relieve the pressure between the members K, L.
GB2875922A 1922-10-23 1922-10-23 Improvements in pulley blocks Expired GB195331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2875922A GB195331A (en) 1922-10-23 1922-10-23 Improvements in pulley blocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2875922A GB195331A (en) 1922-10-23 1922-10-23 Improvements in pulley blocks

Publications (1)

Publication Number Publication Date
GB195331A true GB195331A (en) 1923-03-29

Family

ID=10280674

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2875922A Expired GB195331A (en) 1922-10-23 1922-10-23 Improvements in pulley blocks

Country Status (1)

Country Link
GB (1) GB195331A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557958A (en) * 1948-04-05 1951-06-26 Sharples Corp Hoist drive and brake mechanism
CN104416340A (en) * 2013-08-30 2015-03-18 楚天科技股份有限公司 Manufacturing method of hoisting pulley for bottle washer and group welding fixture thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557958A (en) * 1948-04-05 1951-06-26 Sharples Corp Hoist drive and brake mechanism
CN104416340A (en) * 2013-08-30 2015-03-18 楚天科技股份有限公司 Manufacturing method of hoisting pulley for bottle washer and group welding fixture thereof

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