GB815772A - Improvements in or relating to crank mechanisms for cycles - Google Patents

Improvements in or relating to crank mechanisms for cycles

Info

Publication number
GB815772A
GB815772A GB2203/58A GB220358A GB815772A GB 815772 A GB815772 A GB 815772A GB 2203/58 A GB2203/58 A GB 2203/58A GB 220358 A GB220358 A GB 220358A GB 815772 A GB815772 A GB 815772A
Authority
GB
United Kingdom
Prior art keywords
spindle
pedal
crank
cycles
pivot axis
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
GB2203/58A
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
Publication of GB815772A publication Critical patent/GB815772A/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
    • B62M3/00—Construction of cranks operated by hand or foot
    • B62M3/02—Construction of cranks operated by hand or foot of adjustable length
    • B62M3/04—Construction of cranks operated by hand or foot of adjustable length automatically adjusting

Landscapes

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

Abstract

815,772. Pedal-crank driving-mechanism. STETTLER, O. Jan. 22, 1958 [Jan. 26, 1957], No. 2203/58. Class 136(2) In a pedal crank mechanism for cycles with two pedal cranks 126, 131 movable with respect to one another about a common pivot axis 62, each of which is connected by means of a link 66 or 69 to a chain wheel 55 which is rotatably mounted on axis 63 on the bottom bracket parallel to the axis 62, the pivot axis 63 is displaced downwardly with respect to the pivot axis 62 so that with a constant rotational velocity of the chain wheel the angular velocity of the cranks is greater in the upper half of their movement than in the lower half. The crank 126 is secured to a spindle 22 having an axial drilling into which an axle 28 is rotatably inserted. Two pins 30 are inserted in the spindle 22 and engage a peripheral groove 29 in the spindle 28. The pedal crank 131 is secured to the spindle 28.
GB2203/58A 1957-01-26 1958-01-22 Improvements in or relating to crank mechanisms for cycles Expired GB815772A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT815772X 1957-01-26

Publications (1)

Publication Number Publication Date
GB815772A true GB815772A (en) 1959-07-01

Family

ID=3681472

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2203/58A Expired GB815772A (en) 1957-01-26 1958-01-22 Improvements in or relating to crank mechanisms for cycles

Country Status (1)

Country Link
GB (1) GB815772A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122958A (en) * 1982-06-02 1984-01-25 Gordon Keith Reader Bicycle drive arrangement
GB2243351A (en) * 1990-04-26 1991-10-30 Malcolm Geoffrey Lawrence A pedal and crank drive arrangement
GB2277065A (en) * 1993-04-16 1994-10-19 Dragan Martalog Bukatarevic A variable ratio transmission for a cycle
EP0630804A1 (en) * 1993-06-22 1994-12-28 Shieldcross Holdings Limited Crank device for the transmission of energy with elimination of dead centres, particularly suited for bicycles and the like
US5755635A (en) * 1993-01-28 1998-05-26 Draco Limited Crank device for the transmission of energy with elimination of dead centers, particularly suited for bicycles and the like
WO2000009388A1 (en) * 1998-08-13 2000-02-24 Shen Jiang A high-speed bicycle
CN104176191A (en) * 2014-09-09 2014-12-03 夏正付 Center shaft suitable for bicycle
CN104401444A (en) * 2014-11-25 2015-03-11 广西大学 Center shaft applicable to bicycle

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122958A (en) * 1982-06-02 1984-01-25 Gordon Keith Reader Bicycle drive arrangement
GB2243351A (en) * 1990-04-26 1991-10-30 Malcolm Geoffrey Lawrence A pedal and crank drive arrangement
US5755635A (en) * 1993-01-28 1998-05-26 Draco Limited Crank device for the transmission of energy with elimination of dead centers, particularly suited for bicycles and the like
GB2277065A (en) * 1993-04-16 1994-10-19 Dragan Martalog Bukatarevic A variable ratio transmission for a cycle
EP0630804A1 (en) * 1993-06-22 1994-12-28 Shieldcross Holdings Limited Crank device for the transmission of energy with elimination of dead centres, particularly suited for bicycles and the like
WO2000009388A1 (en) * 1998-08-13 2000-02-24 Shen Jiang A high-speed bicycle
CN104176191A (en) * 2014-09-09 2014-12-03 夏正付 Center shaft suitable for bicycle
CN104401444A (en) * 2014-11-25 2015-03-11 广西大学 Center shaft applicable to bicycle

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