GB594747A - Improvements in and relating to apparatus for moving belts on and off rotating pulleys - Google Patents

Improvements in and relating to apparatus for moving belts on and off rotating pulleys

Info

Publication number
GB594747A
GB594747A GB1671445A GB1671445A GB594747A GB 594747 A GB594747 A GB 594747A GB 1671445 A GB1671445 A GB 1671445A GB 1671445 A GB1671445 A GB 1671445A GB 594747 A GB594747 A GB 594747A
Authority
GB
United Kingdom
Prior art keywords
belt
ring
pulley
arm
rollers
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
GB1671445A
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.)
JOHN WILLIAM DRANSFIELD
Original Assignee
JOHN WILLIAM DRANSFIELD
Filing date
Publication date
Application filed by JOHN WILLIAM DRANSFIELD filed Critical JOHN WILLIAM DRANSFIELD
Publication of GB594747A publication Critical patent/GB594747A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/22—Belt, rope, or chain shifters

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Belt Conveyors (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

594,747. Belt gearing. DRANSFIELD, J. W. July 2, 1945, No. 16714. [Class 80(i)] A device for shifting a belt on and off a pulley 5 comprises a fixed mounting 3 straddling the pulley shaft 4 and having rollers 7 on which is mounted a ring 8. Four arms 14 projecting from the latter carry rollers 15, and two spokes 11 on the ring 8 have end faces 12 inclined towards the pulley 5. Pivoted at the end of an arm 16 on the mounting 3 is an arm 17 positioned between the runs of the belt. The ring 8 is normally held fixed by spring urged bars 18. The belt is shifted off the pulley 5 on to the supporting rollers 15 by the arm 17 when the latter is turned about its pivot to engage one side of the belt. To replace the belt, the locking bars 18 are released by actuating a bell-crank lever 19, and the ring 8 is turned by a rope or chain passing round it so that the inclined faces 12 of the spokes 11 engage the belt and lift it on to the pulley 15. The ring 8 is then returned to its normal position and locked.
GB1671445A 1945-07-02 Improvements in and relating to apparatus for moving belts on and off rotating pulleys Expired GB594747A (en)

Publications (1)

Publication Number Publication Date
GB594747A true GB594747A (en) 1947-11-18

Family

ID=1732530

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1671445A Expired GB594747A (en) 1945-07-02 Improvements in and relating to apparatus for moving belts on and off rotating pulleys

Country Status (1)

Country Link
GB (1) GB594747A (en)

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