GB645912A - Improvements in and relating to control-lever mechanism - Google Patents

Improvements in and relating to control-lever mechanism

Info

Publication number
GB645912A
GB645912A GB1418648A GB1418648A GB645912A GB 645912 A GB645912 A GB 645912A GB 1418648 A GB1418648 A GB 1418648A GB 1418648 A GB1418648 A GB 1418648A GB 645912 A GB645912 A GB 645912A
Authority
GB
United Kingdom
Prior art keywords
pawl
control lever
slot
tooth
ratchet
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
GB1418648A
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 GB1418648A priority Critical patent/GB645912A/en
Publication of GB645912A publication Critical patent/GB645912A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K23/00—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips
    • B62K23/02—Rider-operated controls specially adapted for cycles, i.e. means for initiating control operations, e.g. levers, grips hand actuated
    • B62K23/06—Levers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Transmission Devices (AREA)
  • Surgical Instruments (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

645,912. Control lever mechanism. BIRMINGHAM SMALL ARMS CO., LTD., and WOOD, A. E. May 26, 1948, No. 14186. [Class 136 (i)] A control lever mechanism of the kind adapted to be set in any one of two or more positions comprises interengaging pawl and ratchet members, one of which members 27 is slidable, angularly movable and spring urged into engagement with the other member 10, and a control lever 23 pivoting about a stationary axis 21 and adapted to co-operate with the movable member 27. As shown in Fig. 1, the member 10 is a base plate formed with a slot 15 having ratchet teeth 16, 17 and a cam surface 18. The control lever 23 is formed with a collar 25 having an abutment face 26 and rotatably mounted on a pivot pin 21 projecting from the plate 10. The pawl member 27 has a slot 28 loosely embracing the collar 25 and provided with a shoulder 29 to engage the face 26 to enable disengagement of a pawl tooth 30 from a ratchet tooth 16 or 17. The pawl member 27 has a lug 31 against which an edge of the lever 23 abuts to effect displacement of the pawl against the action of a spring-loaded cable 14. In a modification (Fig. 7) the control lever is provided with a pin 42 to engage a slot 41 in the pawl member. In a further modification (Fig. 8) the stationary base plate 10 has a tooth 30 engaging ratchet teeth in a slot formed in the member 27.
GB1418648A 1948-05-26 1948-05-26 Improvements in and relating to control-lever mechanism Expired GB645912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1418648A GB645912A (en) 1948-05-26 1948-05-26 Improvements in and relating to control-lever mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1418648A GB645912A (en) 1948-05-26 1948-05-26 Improvements in and relating to control-lever mechanism

Publications (1)

Publication Number Publication Date
GB645912A true GB645912A (en) 1950-11-08

Family

ID=10036563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1418648A Expired GB645912A (en) 1948-05-26 1948-05-26 Improvements in and relating to control-lever mechanism

Country Status (1)

Country Link
GB (1) GB645912A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1334903A3 (en) * 2002-02-08 2007-05-30 SRAM Deutschland GmbH Release mechanism for gear change
WO2009092542A1 (en) * 2008-01-23 2009-07-30 Gustav Magenwirth Gmbh & Co. Kg Shifting device
EP2075187A3 (en) * 2007-12-28 2010-12-01 Shimano Inc. Bicycle shift operating device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1334903A3 (en) * 2002-02-08 2007-05-30 SRAM Deutschland GmbH Release mechanism for gear change
EP2075187A3 (en) * 2007-12-28 2010-12-01 Shimano Inc. Bicycle shift operating device
EP2374704A1 (en) * 2007-12-28 2011-10-12 Shimano Inc. Bicycle Shift Operating Device
US9701365B2 (en) 2007-12-28 2017-07-11 Shimano Inc. Bicycle shift operating device
WO2009092542A1 (en) * 2008-01-23 2009-07-30 Gustav Magenwirth Gmbh & Co. Kg Shifting device

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