GB688897A - Improvements in or relating to control mechanism for variable speed gearing - Google Patents

Improvements in or relating to control mechanism for variable speed gearing

Info

Publication number
GB688897A
GB688897A GB2544448A GB2544448A GB688897A GB 688897 A GB688897 A GB 688897A GB 2544448 A GB2544448 A GB 2544448A GB 2544448 A GB2544448 A GB 2544448A GB 688897 A GB688897 A GB 688897A
Authority
GB
United Kingdom
Prior art keywords
pin
sleeve
handle
bar
tube
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
GB2544448A
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.)
Birmingham Small Arms Co Ltd
Original Assignee
Birmingham Small Arms Co Ltd
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 Birmingham Small Arms Co Ltd filed Critical Birmingham Small Arms Co Ltd
Priority to GB2544448A priority Critical patent/GB688897A/en
Publication of GB688897A publication Critical patent/GB688897A/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
    • 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
    • B62M25/045—Actuators for gearing speed-change mechanisms specially adapted for cycles with mechanical transmitting systems, e.g. cables, levers hand actuated having single actuating means operating both front and rear derailleur

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

688,897. Twist-grip controls. BIRMINGHAM SMALL ARMS CO., Ltd., and WOOD, A. E. Sept. 30, 1949 [Sept. 30, 1948], No. 25444/48. Addition to 571,489. Class 136 (i) A modification of a twist grip according to claim 1 of the parent Specification, comprises a sleeve 2 rotatably and slidably mounted on a handle-bar 1 and co-operating with means 9 rigid with the handle-bar to restrict axial movement of the sleeve and to retain the sleeve in any predetermined angular position relative to the handle-bar. As shown, a visible part 4 of the sleeve 2 is formed with a semi-circular slot 5 having angularly spaced recesses 6, 7, 8 in which the head 10 of a pin 9 engages. To the other end of the sleeve 2 is secured a cap 11 connected to an inwardly extending bush 13 in which a link 14 is slidably mounted and engaged by a screw threaded adjusting pin 15 whose head 16 pulls up against the outer end of the cap 11. To urge the sleeve 2 into engagement with the head 10 of the pin 9, a helical spring 19 is attached to the pin 9 and to a pin 18 extending between two arms 17 of the link 14. The screw 15 varies the tension in the spring. A tube 21 is supported on the bush 13 and is formed with a helical cam slot 22 engaged by a cam follower pin 20 secured in the bush 13. The tube is formed with a pair of diametrically opposed axial slots 23 through which the pin 9 passes so that the tube 21 can move axially but non-rotatably relative to the handle-bar 1. A cable 26 connects the tube 21 to a three speed gear.
GB2544448A 1948-09-30 1948-09-30 Improvements in or relating to control mechanism for variable speed gearing Expired GB688897A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2544448A GB688897A (en) 1948-09-30 1948-09-30 Improvements in or relating to control mechanism for variable speed gearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2544448A GB688897A (en) 1948-09-30 1948-09-30 Improvements in or relating to control mechanism for variable speed gearing

Publications (1)

Publication Number Publication Date
GB688897A true GB688897A (en) 1953-03-18

Family

ID=10227767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2544448A Expired GB688897A (en) 1948-09-30 1948-09-30 Improvements in or relating to control mechanism for variable speed gearing

Country Status (1)

Country Link
GB (1) GB688897A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6053064A (en) * 1998-05-01 2000-04-25 L & P Property Management Company Lumbar support screw actuator
WO2004089736A1 (en) * 2003-04-10 2004-10-21 Ross Mitchell Gear shifting mecanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6053064A (en) * 1998-05-01 2000-04-25 L & P Property Management Company Lumbar support screw actuator
WO2004089736A1 (en) * 2003-04-10 2004-10-21 Ross Mitchell Gear shifting mecanism
US7204169B2 (en) 2003-04-10 2007-04-17 Ross Mitchell Gear shifting mechanism
CN100443366C (en) * 2003-04-10 2008-12-17 罗斯·米切尔 Gear shifting mecanism

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