GB191317236A - An Improvement in the Propelling-mechanism of Bicycles and the like. - Google Patents

An Improvement in the Propelling-mechanism of Bicycles and the like.

Info

Publication number
GB191317236A
GB191317236A GB191317236DA GB191317236A GB 191317236 A GB191317236 A GB 191317236A GB 191317236D A GB191317236D A GB 191317236DA GB 191317236 A GB191317236 A GB 191317236A
Authority
GB
United Kingdom
Prior art keywords
crank
pedal
pin
wheel
boss
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
Inventor
Arthur Boyd
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
Application granted granted Critical
Publication of GB191317236A publication Critical patent/GB191317236A/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
    • 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
    • B62M2003/006—Crank arrangements to overcome dead points

Landscapes

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

Abstract

17,236. Boyd, A. July 28. [Cognate Application, 28,957/13.] Cranks, variable-throw. - In pedal - crank driving - mechanism for cycles, of the kind wherein the pedal is elongated and connected to the crank-pin by a one-way clutch, an additional spindle or member freely supported by the crank-pin is provided, and this member, connected to the pedal by the one-way clutch, is geared to the crank bracket in such a way that its angular velocity is reduced below that of the crank-pin either continuously throughout the revolution of the crank or only at such time as it is desirable for the pedal to be ankled for effecting the clutch connexion. The gearing may comprise chain or toothed-wheel gearing connecting a spindle rotatably mounted in a hollow crank-pin to a fixed wheel on the crank bracket, or the bracket and spindle may carry equal toothed-wheels, the ratchet-wheel of the clutch being freely mounted upon the fixed pin and arranged to carry planet-wheels in mesh with a sun-wheel on the pin and with internal teeth on a flanged disk carried by the spindle. As shown in Figs. 7 and 8<a>, the pedal d is connected by a dog clutch n<1> with a ratchetwheel c<1> engaged by pawls upon a plate m; this plate has a pin m<1> passing through a slot in the boss of the crank a and engaging the rod l of a strap upon an eccentric k rigidly or adjustably fixed to the bottom bracket. Or the rod l may be connected to a crank-pin on a wheel at the pedal instead of using the plate m. In order to safeguard the pedal from injury should it contact an obstacle when the machine is being wheeled, the pedal is arranged to be disconnectible from the ratchet mechanism. A two-armed lever o, p, Fig. 9, has a boss q with a projection engaging a recess s in a bearing r, a bolt u mounted freely in the boss being forced outwardly to engage one of a set of holes in a pawl-carrying disk c<1> by a spring v when either lever o or p is depressed by the rider's foot. As soon as pressure is removed from the lever it is pressed back by a spring t and raised by the action of the recess s, and the boss q bearing upon a nut at the end of the bolt carries the bolt out of engagement with the disk c<1>. According to Provisional Specification 28,957/13 more than one disengaging arrangement may be fitted to each pedal.
GB191317236D 1913-07-28 1913-07-28 An Improvement in the Propelling-mechanism of Bicycles and the like. Expired GB191317236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191317236T 1913-07-28

Publications (1)

Publication Number Publication Date
GB191317236A true GB191317236A (en) 1914-08-28

Family

ID=32645886

Family Applications (2)

Application Number Title Priority Date Filing Date
GB191317236D Expired GB191317236A (en) 1913-07-28 1913-07-28 An Improvement in the Propelling-mechanism of Bicycles and the like.
GB191419424D Expired GB191419424A (en) 1913-07-28 1914-09-04 Improvements in the Propelling Mechanism of Bicycles and the like.

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB191419424D Expired GB191419424A (en) 1913-07-28 1914-09-04 Improvements in the Propelling Mechanism of Bicycles and the like.

Country Status (1)

Country Link
GB (2) GB191317236A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108482562A (en) * 2018-05-29 2018-09-04 苗春霖 A kind of manually driven mandril rack gearing and driving method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE536903C2 (en) * 2012-11-28 2014-10-21 Atlas Copco Rock Drills Ab Device at distribution valve for a rock drill and rock drill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108482562A (en) * 2018-05-29 2018-09-04 苗春霖 A kind of manually driven mandril rack gearing and driving method
CN108482562B (en) * 2018-05-29 2024-03-29 苗春霖 Manual driving method of ejector rod rack transmission device

Also Published As

Publication number Publication date
GB191419424A (en) 1915-09-06

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