US713867A - Cycle driving-gear. - Google Patents

Cycle driving-gear. Download PDF

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Publication number
US713867A
US713867A US11324202A US1902113242A US713867A US 713867 A US713867 A US 713867A US 11324202 A US11324202 A US 11324202A US 1902113242 A US1902113242 A US 1902113242A US 713867 A US713867 A US 713867A
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United States
Prior art keywords
driving
cycle
gear
treadles
wheel
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Expired - Lifetime
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US11324202A
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John Burnip Forster
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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
    • B62M1/32—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by directly driving the wheel axle, e.g. by using a ratchet wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • Y10T74/1532—Rack actuator
    • Y10T74/1537—Oscillating
    • Y10T74/1539—Multiple acting

Definitions

  • This invention relates to an improved arrangement of treadle-driven-cycle drivinggear designed to avoid the disadvantages incidental to crank-and-chain-driven cycles and adapted to enable the cyclist to exert a continuous application of power and a more direct propelling action than is attainable with crank-and-chain-driven gear with am ore convenient motion and more powerful action and to have his feet forward when free-wheeling and to exert more or less power at will by varying the forward position of the feet along the treadles.
  • Figure 1 represents a side elevation of part of a bicycle, showing theimproved gearing in position, with one treadle in its normal raised position and the other treadle in its depressed position.
  • Fig. 2 represents a plan of Fig. 1.
  • Figs. 3 and 4 represent side and plan views,,respectively, of the rear portion of the cycle, showing certain parts hereinafter described.
  • a is a cycle-frame, at each side of which a treadle-lever Z) is centered on a pivot e, secured at any convenient point along the driving-wheel stays cl.
  • Each treadle is provided at its fore end with a foot-plate e for depression by the cyclist and at its rear end, which may be arranged within or without the stays d, with a toothed sector f.
  • the sectors f respectively, engage with one of a pair of sprocket free wheels g, mounted on the driving-wheel hub h, one on each side thereof, free to rotate thereon in a backward direction, but adapted to engage therewith and actuate the same when driven in a forward direction by the depression of the treadles.
  • the sectors are maintained in constant engagement with the sprocket-wheels by the motion of their supporting-levers being limited by the driving-wl1eel axle or any other Serial No, 113,242. (No model.)
  • the said driving mechanism also permits in addition to said advantage of the cycle being used as a free wheel for coasting runs, during which the feet may be set in a sitting position supported by the treadles, and of the power exerted being increased or diminished at will upon shifting the feet more or less forward on the treadle-levers.
  • a pair of treadles arranged one at each side of the driving-wheel and centered, between their ends, on a pivot supported by theframe, and having a foot-plate at its fore end and a toothed for preventing the disengagement of the sectors from the sprocket-wheels, and an axle depression of the foot, as set forth.

Description

No. 713,867. PatentadNov. I8, 1902.
J. B. FORSTEB.
CYCLE DRIVING GEAR.
( Application filed. June 26 1902.)
(No Model.)
mm M:
UNrrEn STATES rnr FFrcE.
JOHN BURNIP FORSTER, OF BELFAST, IRELAND.
CYCLE DRIVING-GEAR.
SPECIFICATIONforming part of Letters Patent No. 713,867, dated November 18,1902.
Application filed June 26,1902.
T0 alt whom, it may concern:
Be it known that I, J OHN BURNIP FORSTER, a subject of the King of Great Britain and Ireland, and a resident of Belfast, Ireland,-
have invented certain new and useful Improvement-s in Cycle Driving-Gear,(for which I have filed an application for British patent, No. 19,205, dated September 26, 1901;) and I do hereby declare the following to be a full, clear, and exact description of the same.
This invention relates to an improved arrangement of treadle-driven-cycle drivinggear designed to avoid the disadvantages incidental to crank-and-chain-driven cycles and adapted to enable the cyclist to exert a continuous application of power and a more direct propelling action than is attainable with crank-and-chain-driven gear with am ore convenient motion and more powerful action and to have his feet forward when free-wheeling and to exert more or less power at will by varying the forward position of the feet along the treadles.
On the accompanying drawings, Figure 1 represents a side elevation of part of a bicycle, showing theimproved gearing in position, with one treadle in its normal raised position and the other treadle in its depressed position. Fig. 2 represents a plan of Fig. 1. Figs. 3 and 4 represent side and plan views,,respectively, of the rear portion of the cycle, showing certain parts hereinafter described.
a is a cycle-frame, at each side of which a treadle-lever Z) is centered on a pivot e, secured at any convenient point along the driving-wheel stays cl. Each treadle is provided at its fore end with a foot-plate e for depression by the cyclist and at its rear end, which may be arranged within or without the stays d, with a toothed sector f. The sectors f, respectively, engage with one of a pair of sprocket free wheels g, mounted on the driving-wheel hub h, one on each side thereof, free to rotate thereon in a backward direction, but adapted to engage therewith and actuate the same when driven in a forward direction by the depression of the treadles. The sectors are maintained in constant engagement with the sprocket-wheels by the motion of their supporting-levers being limited by the driving-wl1eel axle or any other Serial No, 113,242. (No model.)
convenient stop. After each depression of the treadle-lever by the foot it is raised to its normal position ready for renewed actuation. This may be effected by the counterweight of the sector end of the treadlelever or by the foot by means of toe-clips j, applied to the foot-plates c, Fig. 1, or in connection with the same by means of flexible attachments m, connecting the sectors to pulleys a, fast on an axle o, passing through the driving-wheel hub, Figs. 3 and 4:, so that the depression of each lever causes the raising of the other, or automatically by springs 19, connecting the respective levers with the cycle-frame, which may be used in connection with the pulleys n. By such mechanism the power exerted on the treadles by the cyclist is transferred by the sectors to the sprocket-wheels on the driving -wheel hub directly and without loss of leverage, and during the return motion of the treadles the sprocket-wheels run back free on the driving- Wheel hub. Thus the full amount of power exerted on the treadles by the cyclist, less only the loss due to friction, is utilized in propelling the cycle, whereby the cyclist is enabled to exert his power to the best advantage. The said driving mechanism also permits in addition to said advantage of the cycle being used as a free wheel for coasting runs, during which the feet may be set in a sitting position supported by the treadles, and of the power exerted being increased or diminished at will upon shifting the feet more or less forward on the treadle-levers.
What I claim as my invention, and desire to secure by Letters Patent, is-
In combination with a cycle-frame and a driving-wheel mounted therein, a pair of treadles arranged one at each side of the driving-wheel and centered, between their ends, on a pivot supported by theframe, and having a foot-plate at its fore end and a toothed for preventing the disengagement of the sectors from the sprocket-wheels, and an axle depression of the foot, as set forth. passingthroughthedriving-wheel axle, apair In testimony whereof I have signed this of pulleys on the through-axle one at each l specification in the presence of two subscribside of the driving-Wheel and a flexible coning Witnesses.
treadles to their normal position, after each :0
nection from each pulley to the top side of JOHN BURNIP FORSTER. I the sector at the same side of the driving- Witnesses:
ELIZABETH MURPHY.
Wheel, the two connections rising from differ- JANE ELIZABETH FORSTER, ent sides of the two pulleys for returning the
US11324202A 1902-06-26 1902-06-26 Cycle driving-gear. Expired - Lifetime US713867A (en)

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US11324202A US713867A (en) 1902-06-26 1902-06-26 Cycle driving-gear.

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US11324202A US713867A (en) 1902-06-26 1902-06-26 Cycle driving-gear.

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US713867A true US713867A (en) 1902-11-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414293A (en) * 1967-04-24 1968-12-03 Kenneth W. Frye Bicycle gear
US20030098566A1 (en) * 2001-05-01 2003-05-29 Christensen Donald J. Lever operated foot pump scooter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414293A (en) * 1967-04-24 1968-12-03 Kenneth W. Frye Bicycle gear
US20030098566A1 (en) * 2001-05-01 2003-05-29 Christensen Donald J. Lever operated foot pump scooter

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