GB733344A - Improvements in or relating to power transmission devices for bicycles - Google Patents

Improvements in or relating to power transmission devices for bicycles

Info

Publication number
GB733344A
GB733344A GB178952A GB178952A GB733344A GB 733344 A GB733344 A GB 733344A GB 178952 A GB178952 A GB 178952A GB 178952 A GB178952 A GB 178952A GB 733344 A GB733344 A GB 733344A
Authority
GB
United Kingdom
Prior art keywords
levers
frame
bicycle
treadle
pivoted
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
GB178952A
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 GB178952A priority Critical patent/GB733344A/en
Publication of GB733344A publication Critical patent/GB733344A/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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
    • B62M1/26—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by rotary cranks combined with reciprocating levers

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Transmission Devices (AREA)

Abstract

733,344. Treadle mechanism for cycles. WILLIAMS, J. Jan. 19, 1953 [Jan. 22, 1952] No. 1789/52. Class 136(2). A treadle operated power transmission device for a bicycle comprises a supporting frame 10, a chain wheel 19 rotatably mounted thereon forward of the rear wheel, a pair of levers 13 each pivoted intermediate its length at 12 on said frame and each having one end extending forwardly and arranged to be operated as a treadle, and a pair of connecting rods 16 each pivoted at 15 to one of the levers 13 and at 17 to a member 18 operatively connected with the chainwheel shaft. Owing to the mass of the lever 13 and connecting rods 16 the pedals 14 may not rise from the lowest positions so easily as the normal pedals. A slipping clutch is provided to overcome the inertia of the treadles. For this purpose the rear hub 21, Fig. 2, is provided with a friction ring 22 suitably mounted on bolts 23 and urged against the rear chain sprocket 20 by springs 24. Declutching means operable by a cable may be provided. As shown in Fig. 1, the supporting frame 10 is constituted by the bicycle frame but the frame 10 may be detachably secured to an ordinary bicycle. The supporting frame 10 may also be incorporated in a tandem bicycle as shown in Fig. 3, two levers 27, 28 being pivoted about two lateral journals 26 projecting from a mounting 25. Parts 27a, 28a respectively of the levers are connected by rods 31, 32 to a pivot 36 on a chain wheel 33 mounted on a journal 34. The same construction of levers and connecting rods is provided on the other side of the machine but in opposite phase relation. As shown in Fig. 4, a standard tandem frame 10 is provided with journals 40 for levers 41, 42 which are connected by rods 45, 46 to a chain wheel 47.
GB178952A 1952-01-22 1952-01-22 Improvements in or relating to power transmission devices for bicycles Expired GB733344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB178952A GB733344A (en) 1952-01-22 1952-01-22 Improvements in or relating to power transmission devices for bicycles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB178952A GB733344A (en) 1952-01-22 1952-01-22 Improvements in or relating to power transmission devices for bicycles

Publications (1)

Publication Number Publication Date
GB733344A true GB733344A (en) 1955-07-13

Family

ID=9728024

Family Applications (1)

Application Number Title Priority Date Filing Date
GB178952A Expired GB733344A (en) 1952-01-22 1952-01-22 Improvements in or relating to power transmission devices for bicycles

Country Status (1)

Country Link
GB (1) GB733344A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9407488U1 (en) * 1994-05-05 1995-09-07 Schnell, Thomas, 25469 Halstenbek Vehicle with push crank drive
GB2359285A (en) * 2000-02-16 2001-08-22 Edward Allen Drive apparatus for self-propelled velocipede
GB2370021A (en) * 2000-10-20 2002-06-19 Kuen Shan Hsu Apparatus with foot supports driving a rotary member
DE102008010802A1 (en) * 2008-02-23 2009-08-27 Efim Avruckij Bicycle drive gear, has automatic friction variator, pedal shaft and chain drive with guiding chain wheel, driven chain wheel and chain
FR2929922A1 (en) * 2008-04-10 2009-10-16 Eric Valat LEVER PEDAL SYSTEM
GB2459485A (en) * 2008-04-24 2009-10-28 Peter Rolin Heal Human powered machine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9407488U1 (en) * 1994-05-05 1995-09-07 Schnell, Thomas, 25469 Halstenbek Vehicle with push crank drive
US5697627A (en) * 1994-05-05 1997-12-16 Schnell; Thomas Vehicle with thrust crank drive
GB2359285A (en) * 2000-02-16 2001-08-22 Edward Allen Drive apparatus for self-propelled velocipede
GB2359285B (en) * 2000-02-16 2004-04-28 Edward Allen Drive apparatus for a velociped
GB2370021A (en) * 2000-10-20 2002-06-19 Kuen Shan Hsu Apparatus with foot supports driving a rotary member
DE102008010802A1 (en) * 2008-02-23 2009-08-27 Efim Avruckij Bicycle drive gear, has automatic friction variator, pedal shaft and chain drive with guiding chain wheel, driven chain wheel and chain
FR2929922A1 (en) * 2008-04-10 2009-10-16 Eric Valat LEVER PEDAL SYSTEM
WO2009136088A2 (en) * 2008-04-10 2009-11-12 Eric Valat Crankset system having levers
WO2009136088A3 (en) * 2008-04-10 2010-01-14 Eric Valat Crankset system having levers
GB2459485A (en) * 2008-04-24 2009-10-28 Peter Rolin Heal Human powered machine
GB2459485B (en) * 2008-04-24 2012-08-01 Peter Rolin Heal Man powered machine plus

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