GB653158A - Improvements in or relating to motor-assisted bicycles and the like - Google Patents

Improvements in or relating to motor-assisted bicycles and the like

Info

Publication number
GB653158A
GB653158A GB26197/48A GB2619748A GB653158A GB 653158 A GB653158 A GB 653158A GB 26197/48 A GB26197/48 A GB 26197/48A GB 2619748 A GB2619748 A GB 2619748A GB 653158 A GB653158 A GB 653158A
Authority
GB
United Kingdom
Prior art keywords
motor
roller
tyre
wheel
contact
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
GB26197/48A
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 GB26197/48A priority Critical patent/GB653158A/en
Publication of GB653158A publication Critical patent/GB653158A/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
    • B62M7/00—Motorcycles characterised by position of motor or engine
    • B62M7/10—Motorcycles characterised by position of motor or engine with the engine over the front wheel

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

653,158. Motor attachments for cycles. LATTA, J. Oct. 7, 1948, No. 26197. [Classes 79 (ii) and 79 (iii)] [Also in Group XXIV] In a motor-assisted bicycle the tyre of a road wheel is driven from the motor by means of a roller formed of at least two cylindrical driving surfaces of different diameters with a short intermediate coned portion between adjacent driving surfaces, the roller being capable of substantially axial movements to bring a driving surface of a different diameter into contact with the tyre to vary the speed ratio between the motor and wheel and the coned portion being brought into contact with the tyre during such movement to cause the speed variation to be effected gradually. As shown the motor 1 is mounted on an arm 3 which is connected by a bracket 2c with a similar arm 3. The bracket carries the friction driving roller as a continuation of the main shaft of the motor and can be engaged with the tyre 4 of the front wheel of the bicycle 5. Alternatively the motor can drive the rear wheel. The roller is formed of the cylindrical portions 2, 2a interconnected by the coned portion 2b. Alternatively the roller can be formed of a larger number of cylindrical portions. The arms 3 are carried on rods 6 along which they are displacable by means of a double Bowden cable 10 operated by a hand lever secured to the handlebars of the bicycle in order to move the motor and roller along an axis substantially parallel to the wheel axle, thus bringing different portions of the roller into contact with the tyre 4 to vary the speed ratio, the rods 6 being carried by brackets 7 secured to the wheel forks 8. The arms 3 are each connected by a spring 12 to a bracket 13 on the wheel fork or to the wheel axle in order to urge the roller into contact with the tyre. The springs 12 are arranged so that they can be released when the motor is not required for use, the arms 3 being then pivoted about the rods 6 into a position in which the roller is not in contact with the tyre. In a modification the roller can be moved across the tyre by sliding it along a keyed driving shaft, the motor being secured in a stationary position relative to the bicycle frame.
GB26197/48A 1948-10-07 1948-10-07 Improvements in or relating to motor-assisted bicycles and the like Expired GB653158A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26197/48A GB653158A (en) 1948-10-07 1948-10-07 Improvements in or relating to motor-assisted bicycles and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26197/48A GB653158A (en) 1948-10-07 1948-10-07 Improvements in or relating to motor-assisted bicycles and the like

Publications (1)

Publication Number Publication Date
GB653158A true GB653158A (en) 1951-05-09

Family

ID=10239872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26197/48A Expired GB653158A (en) 1948-10-07 1948-10-07 Improvements in or relating to motor-assisted bicycles and the like

Country Status (1)

Country Link
GB (1) GB653158A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123173A (en) * 1964-03-03 Variable speed drive mechanism
US3961678A (en) * 1973-09-11 1976-06-08 Mitsubadenkiseisakusho Company, Ltd. Simple electric bicycle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123173A (en) * 1964-03-03 Variable speed drive mechanism
US3961678A (en) * 1973-09-11 1976-06-08 Mitsubadenkiseisakusho Company, Ltd. Simple electric bicycle

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