GB167648A - Improvements in differential pulley blocks - Google Patents

Improvements in differential pulley blocks

Info

Publication number
GB167648A
GB167648A GB1660820A GB1660820A GB167648A GB 167648 A GB167648 A GB 167648A GB 1660820 A GB1660820 A GB 1660820A GB 1660820 A GB1660820 A GB 1660820A GB 167648 A GB167648 A GB 167648A
Authority
GB
United Kingdom
Prior art keywords
shaft
sheaves
lowering
prevented
ball bearings
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
GB1660820A
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.)
Edoux Samain SA Ets
Original Assignee
Edoux Samain SA Ets
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 Edoux Samain SA Ets filed Critical Edoux Samain SA Ets
Priority to GB1660820A priority Critical patent/GB167648A/en
Publication of GB167648A publication Critical patent/GB167648A/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
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Transmission Devices (AREA)

Abstract

167,648. Thompson, W. P., (Soc. Anon. des Etablissements Edoux-Samain). June 19, 1920. Self-sustaining gear.-The shaft of a pulley rotates on ball bearings during lifting, but it is prevented from turning during lowering, causing the sheaves to revolve on the shaft with sufficient friction to maintain the load auomatically suspended. As shown, for a differential chain pulley block, the shaft e carrying the integral sheaves f, l, m is permitted to rotate on ball bearings c, d, when hoisting, but is prevented, by the engagement of a pawl i with a ratchet-wheel g on the shaft, from rotating in the opposite direction, thereby necessitating, when lowering, the rotation of the sheaves on the shaft. The guide pulley block also may be similarly constructed. As shown, to increase the friction when lowering, the guide pulley m is rotatably mounted on a large drum p keyed to the shaft q.
GB1660820A 1920-06-19 1920-06-19 Improvements in differential pulley blocks Expired GB167648A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1660820A GB167648A (en) 1920-06-19 1920-06-19 Improvements in differential pulley blocks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1660820A GB167648A (en) 1920-06-19 1920-06-19 Improvements in differential pulley blocks

Publications (1)

Publication Number Publication Date
GB167648A true GB167648A (en) 1921-08-18

Family

ID=10080388

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1660820A Expired GB167648A (en) 1920-06-19 1920-06-19 Improvements in differential pulley blocks

Country Status (1)

Country Link
GB (1) GB167648A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734717A (en) * 1956-02-14 campbell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734717A (en) * 1956-02-14 campbell

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