GB1509942A - Vehicle with variable speed transmission - Google Patents

Vehicle with variable speed transmission

Info

Publication number
GB1509942A
GB1509942A GB34452/75A GB3445275A GB1509942A GB 1509942 A GB1509942 A GB 1509942A GB 34452/75 A GB34452/75 A GB 34452/75A GB 3445275 A GB3445275 A GB 3445275A GB 1509942 A GB1509942 A GB 1509942A
Authority
GB
United Kingdom
Prior art keywords
shaft
hub
arm
chain
cable
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
GB34452/75A
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.)
Harris International Inc
Original Assignee
Harris International Inc
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 Harris International Inc filed Critical Harris International Inc
Priority to GB34452/75A priority Critical patent/GB1509942A/en
Publication of GB1509942A publication Critical patent/GB1509942A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • 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
    • F16H29/00—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action
    • F16H29/12—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between rotary driving and driven members
    • F16H29/16—Gearings for conveying rotary motion with intermittently-driving members, e.g. with freewheel action between rotary driving and driven members in which the transmission ratio is changed by adjustment of the distance between the axes of the rotary members

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

1509942 Variable speed gear HARRIS INTERNATIONAL Inc 19 Aug 1975 34452/75 Heading F2D [Also in Division B7] Speed ratios ranging steplessly from one-toone upwards to overdrives only, are provided on a pedal cycle by a rotatable inner shaft 65 adjustable radially within a wheel hub 27 by a rider control 95 to vary the speed ratio imparted to the hub by the shaft through oneway clutches 85 connected to the hub through links 83. The hub 27 bears an the frame at one side on a stub shaft 39 and at the other on a fixed housing 45, supporting, on a pivot 59, a forked arm 57 carrying the inner shaft 65 on bearings 67, 69, the shaft being driven through a sprocket 71 and chain 75 by conventional pedals or by oscillating pedal levers 135, Figs. 6 and 8. The support arm 57 is biased downwards to a concentric one-to-one setting determined by a stop screw 133, and is pivoted upwards to overdrives by tension on a manual cable 95 acting through a linear one-way lock 93, Fig. 4, which locks the arm 57 against downward movement in selected settings, and comprises balls 99 loaded by a spring 129 on to a wedge surface on a plunger 117 connected by a flexible cable 111 to the pivoted arm 57 and moved upwardly freely by tension on the control cable 95, and downwardly by push on the control cable to release the wedging balls 99. In Figs. 6 and 8 the chain 75a driving the inner shaft is driven by pedal levers 135 oscillated about frame pivots 137 to pull cables 141 attached to pulleys 143 carried eccentrically on a shaft 156 connected by one-way clutches 155 to a sleeve 147 carrying a sprocket 157 providing a one-way drive to the chain 75a, the eccentricity producing variable leverage.
GB34452/75A 1975-08-19 1975-08-19 Vehicle with variable speed transmission Expired GB1509942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB34452/75A GB1509942A (en) 1975-08-19 1975-08-19 Vehicle with variable speed transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34452/75A GB1509942A (en) 1975-08-19 1975-08-19 Vehicle with variable speed transmission

Publications (1)

Publication Number Publication Date
GB1509942A true GB1509942A (en) 1978-05-10

Family

ID=10365833

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34452/75A Expired GB1509942A (en) 1975-08-19 1975-08-19 Vehicle with variable speed transmission

Country Status (1)

Country Link
GB (1) GB1509942A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379426A (en) * 2001-09-07 2003-03-12 Jeffery William Rodbard Human powered drive mechanism
NL2032587B1 (en) * 2022-07-25 2024-02-02 Classified Cycling Bv Hub assembly for a bicycle wheel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379426A (en) * 2001-09-07 2003-03-12 Jeffery William Rodbard Human powered drive mechanism
NL2032587B1 (en) * 2022-07-25 2024-02-02 Classified Cycling Bv Hub assembly for a bicycle wheel

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee