GB475021A - Improvements in change speed gears for chain drives - Google Patents

Improvements in change speed gears for chain drives

Info

Publication number
GB475021A
GB475021A GB1658737A GB1658737A GB475021A GB 475021 A GB475021 A GB 475021A GB 1658737 A GB1658737 A GB 1658737A GB 1658737 A GB1658737 A GB 1658737A GB 475021 A GB475021 A GB 475021A
Authority
GB
United Kingdom
Prior art keywords
lever
chain
sprocket
spring
sprockets
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
GB1658737A
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.)
ERVIN VANTOCH
JOSEF KNEIFEL
Original Assignee
ERVIN VANTOCH
JOSEF KNEIFEL
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 ERVIN VANTOCH, JOSEF KNEIFEL filed Critical ERVIN VANTOCH
Priority to GB1658737A priority Critical patent/GB475021A/en
Publication of GB475021A publication Critical patent/GB475021A/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
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs
    • B62M9/124—Mechanisms for shifting laterally
    • 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
    • B62M25/00—Actuators for gearing speed-change mechanisms specially adapted for cycles
    • B62M25/02—Actuators for gearing speed-change mechanisms specially adapted for cycles with mechanical transmitting systems, e.g. cables, levers
    • B62M25/04—Actuators for gearing speed-change mechanisms specially adapted for cycles with mechanical transmitting systems, e.g. cables, levers hand actuated
    • 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
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs
    • B62M9/124—Mechanisms for shifting laterally
    • B62M2009/12406—Rear derailleur comprising a rigid pivoting arm

Landscapes

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

Abstract

475,021. Change-speed driving-mechanism for cycles. VANTOCH, E., and KNEIFEL, J. June 15, 1937, No. 16587. [Classes 136 (i) and 136 (ii)] [Also in Group XXIV] In change-speed driving-mechanism for cycles of the type in which the chain 1 is moved laterally for selective engagement with driven sprockets 2, 3, 4, of different sizes, each sprocket is provided, by reduction of tooth thickness, with two spaced marginal ramps 6, 7 sloping in opposite directions, the corresponding ramps on adjacent sprockets sloping in the same direction and forming a substantially helical path for the passage of the chain from one sprocket to the other. One or more teeth may be entirely omitted on one or more of the sprockets where the ramp is thinnest, i.e. where the helical path passes from one sprocket to the other. The chain is shifted by a spring-urged rocking fork 8 connected by a cable 12 to a hand-lever 14, which simultaneously controls through a cable 21 a lever 20, carrying a jockey pulley 19. The lever 14 is spring-pivoted, and is pressed laterally by a blade-spring 18 to engage a peg on the lever with a selected hole in a quadrant 16.
GB1658737A 1937-06-15 1937-06-15 Improvements in change speed gears for chain drives Expired GB475021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1658737A GB475021A (en) 1937-06-15 1937-06-15 Improvements in change speed gears for chain drives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1658737A GB475021A (en) 1937-06-15 1937-06-15 Improvements in change speed gears for chain drives

Publications (1)

Publication Number Publication Date
GB475021A true GB475021A (en) 1937-11-11

Family

ID=10080007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1658737A Expired GB475021A (en) 1937-06-15 1937-06-15 Improvements in change speed gears for chain drives

Country Status (1)

Country Link
GB (1) GB475021A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3936921A1 (en) * 1988-11-07 1990-05-10 Shimano Industrial Co MULTI-SPEED SPROCKET ARRANGEMENT FOR BICYCLES
US5085621A (en) * 1990-02-28 1992-02-04 Shimano Corporation Multi-stage sprocket assembly for bicycle
US5087226A (en) * 1990-02-28 1992-02-11 Shimano Corporation Multi-stage sprocket assembly for bicycle
DE4330989A1 (en) * 1993-09-13 1995-03-16 Fichtel & Sachs Ag Derailleur gears, especially for bicycles
DE4434752A1 (en) * 1994-09-29 1996-04-04 Fichtel & Sachs Ag Derailleur gears, especially for bicycles
US5738603A (en) * 1994-12-16 1998-04-14 Fichtel & Sachs Ag Derailleur
US6190275B1 (en) * 1999-05-26 2001-02-20 Gregory J. Ciancio Bicycle chain anti-snare device
DE10119590A1 (en) * 2001-04-21 2002-10-24 Sram De Gmbh Chain circuit comprises drive and driven sets of chain wheels joined by roller chain, with differently sized chain wheels, chain links and sloping tooth
DE10347784A1 (en) * 2003-10-10 2005-05-12 Sram De Gmbh Low noise derailleur
US8834309B2 (en) 2008-07-03 2014-09-16 Sram Deutschland Gmbh Multiple sprocket assembly

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3936921A1 (en) * 1988-11-07 1990-05-10 Shimano Industrial Co MULTI-SPEED SPROCKET ARRANGEMENT FOR BICYCLES
US5073151A (en) * 1988-11-07 1991-12-17 Shimano Industrial Co., Ltd. Multi-speed sprocket assembly for bicycle
US5085621A (en) * 1990-02-28 1992-02-04 Shimano Corporation Multi-stage sprocket assembly for bicycle
US5087226A (en) * 1990-02-28 1992-02-11 Shimano Corporation Multi-stage sprocket assembly for bicycle
DE4330989A1 (en) * 1993-09-13 1995-03-16 Fichtel & Sachs Ag Derailleur gears, especially for bicycles
US5503598A (en) * 1993-09-13 1996-04-02 Fichtel & Sachs Ag Derailleur arrangement, in particular for bicycles
DE4434752A1 (en) * 1994-09-29 1996-04-04 Fichtel & Sachs Ag Derailleur gears, especially for bicycles
US5738603A (en) * 1994-12-16 1998-04-14 Fichtel & Sachs Ag Derailleur
US6190275B1 (en) * 1999-05-26 2001-02-20 Gregory J. Ciancio Bicycle chain anti-snare device
DE10119590A1 (en) * 2001-04-21 2002-10-24 Sram De Gmbh Chain circuit comprises drive and driven sets of chain wheels joined by roller chain, with differently sized chain wheels, chain links and sloping tooth
DE10347784A1 (en) * 2003-10-10 2005-05-12 Sram De Gmbh Low noise derailleur
US8517874B2 (en) 2003-10-10 2013-08-27 Sram Deutschland Gmbh Low-noise chainwheel
US9528588B2 (en) 2003-10-10 2016-12-27 Sram Deutschland Gmbh Low-noise sprocket
DE10347784B4 (en) * 2003-10-10 2017-04-06 Sram Deutschland Gmbh Low noise derailleur
US10443685B2 (en) 2003-10-10 2019-10-15 Sram Deutschland, Gmbh Low-noise chain
US8834309B2 (en) 2008-07-03 2014-09-16 Sram Deutschland Gmbh Multiple sprocket assembly
EP3202654A1 (en) 2008-07-03 2017-08-09 SRAM Deutschland GmbH Multiple-chain wheel assembly for a bicycle
DE102008031162B4 (en) 2008-07-03 2021-10-21 Sram Deutschland Gmbh Multiple chain sprocket for a bicycle

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