GB579007A - Improvements in or relating to infinitely variable speed gears - Google Patents

Improvements in or relating to infinitely variable speed gears

Info

Publication number
GB579007A
GB579007A GB610844A GB610844A GB579007A GB 579007 A GB579007 A GB 579007A GB 610844 A GB610844 A GB 610844A GB 610844 A GB610844 A GB 610844A GB 579007 A GB579007 A GB 579007A
Authority
GB
United Kingdom
Prior art keywords
spindle
pulley
flanges
bushings
belt
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
GB610844A
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.)
FRED HORACE COLES
Original Assignee
FRED HORACE COLES
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 FRED HORACE COLES filed Critical FRED HORACE COLES
Priority to GB610844A priority Critical patent/GB579007A/en
Publication of GB579007A publication Critical patent/GB579007A/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
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • 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
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F16H2009/166—Arrangements of two or more belt gearings mounted in series, e.g. for increasing ratio coverage

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

579,007. Expanding-pulley belt or chain gearing. BOOTH, A., and COLES, F. H. April 1, 1944, No. 6108. [Class 80 (ii)] Flanges 4, 5 of expanding-pulley pairs are axially adjusted in unison by turning a spindle 6, with opposite-handed screw-threads carrying nuts 16, which are integral with thrust-bearing housings 18 of one pulley 5 and are connected to similar bearings 23 of the other pulley 4 by levers 20, which fulcrum on pins 25 on freelymounted forked brackets 15. which are displaceable axially of the spindle 6 and are loaded axially inwards as by compression springs 40 or by the centrifugal force on belt or chain tread-members slidable radially on the pulleyflanges, so as to tend to close down pulley 4 without affecting 5, thus providing an automatic adjustment of belt or chain tension for normal running. Belt-tension is initially adjusted by independently turning bushings 7, on which the fulcrum-brackets 15 are freely mounted, the bushings being screw-threaded on the spindle 6 and provided with abutment-flanges 8, which take the reaction of the springs 40 and also allow a limited axial float of the spindle 6 in the fixed casing 1 to allow the belt freedom to centre itself on the pulleys. The bushings 7 are normally secured to handwheels 11 on the spindle 6 by set screws 13, which are slackened to permit independent adjustment of the bushings. In a modification, the spindle 6 is mounted on the opposite side of the pulley 5 and the bushings 7 are mounted on a separate threaded spindle. In an arrangement for two belts in parallel, (Fig. 3, not shown) two pulleys are mounted side-byside on a common shaft, the outer flanges being adjusted by levers as above, the movement being transmitted to the inner flanges by an axially split splined internal sleeve, the halves of which couple the respective inner flanges to the remote outer flange. A countershaft four-pulley arrangement (Fig. 4, not shown) with aligned driving and driven shafts and two belts in series is also described. The outer flanges are adjusted by levers, as above, whilst the inner flanges move together, a thrust-bearing being provided between the inner halves of the driving and driven pulleys.
GB610844A 1944-04-01 1944-04-01 Improvements in or relating to infinitely variable speed gears Expired GB579007A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB610844A GB579007A (en) 1944-04-01 1944-04-01 Improvements in or relating to infinitely variable speed gears

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB610844A GB579007A (en) 1944-04-01 1944-04-01 Improvements in or relating to infinitely variable speed gears

Publications (1)

Publication Number Publication Date
GB579007A true GB579007A (en) 1946-07-19

Family

ID=9808522

Family Applications (1)

Application Number Title Priority Date Filing Date
GB610844A Expired GB579007A (en) 1944-04-01 1944-04-01 Improvements in or relating to infinitely variable speed gears

Country Status (1)

Country Link
GB (1) GB579007A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112253706A (en) * 2020-10-19 2021-01-22 刘剑清 Power assembly of pure electric vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112253706A (en) * 2020-10-19 2021-01-22 刘剑清 Power assembly of pure electric vehicle

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