AT76338B - Bicycle crank drive to enable one-legged people and other people with a handicap in the use of their second leg to ride normal two-wheelers. - Google Patents

Bicycle crank drive to enable one-legged people and other people with a handicap in the use of their second leg to ride normal two-wheelers.

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Publication number
AT76338B
AT76338B AT76338DA AT76338B AT 76338 B AT76338 B AT 76338B AT 76338D A AT76338D A AT 76338DA AT 76338 B AT76338 B AT 76338B
Authority
AT
Austria
Prior art keywords
people
normal
leg
wheelers
handicap
Prior art date
Application number
Other languages
German (de)
Inventor
Josef Weisz
Original Assignee
Josef Weisz
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 Josef Weisz filed Critical Josef Weisz
Application granted granted Critical
Publication of AT76338B publication Critical patent/AT76338B/en

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  • Steering Devices For Bicycles And Motorcycles (AREA)

Description

  

   <Desc/Clms Page number 1> 
 fahrradtretkurbelantrieb zur Ermöglichung des Fahren8 von Einbeinigen und anderen,
Im Gebrauch Ihres zweiten Beines behinderten Personen auf Normalzwelrädern. 



   Vorliegende Erfindung besteht in einem   Fabrradtretkurbelantrieb,   welcher Einbeinigen oder anderen, im Gebrauch ihres zweiten Beines behinderten Personen das Fahren auf Normal. zweirädern ermöglicht. Bisher war es bekanntlich derartigen Invaliden nicht gut möglich, sich eines Normalzweirades, insbesondere mit Freilauf, sei es mit oder ohne Rücktrittbremse und Übersetzung, mit Vorteil zu bedienen, weil mit nur einer Tretkurbel die Überwindung der Tot-   punk tlage auf   Schwierigkeiten stösst. Besonders bei Freilaufrädern gestaltet sich das Fahren sehr umständlich, da hiebei die Tretkurbel nicht zwangläufig mitgenommen wird.

   Hat bei   An-   wendung nur einer Tretkurbel diese die tiefste Stelle erreicht, so muss sie vom selben Fuss wieder mit   hou'genommen   werden, was zum   mindesten ahr umständlich   und ermüdend ist. Diesem Mangel wird durch vorliegende Erfindung in einfacher Weise dadurch abgeholfen, dass die   Trotz   kurbel derart unter dem Einfluss einer Schraubenfeder, eines elastischen Bandes oder dgl. steht, dass sie ständig das Bestreben hat, in ihre höchste Stellung zu gelangen. 
 EMI1.1 
 lager   IV versehenen Stange   c auf eine an Stelle der   7. weiten   Tretkurbel   vorgesehene Hilfskurbel k   zur Wirkung gelangt. Um eine unterschiedliche Spannung'der Feder s oder dgl. zu ermöglichen, kann eine geeignete Einrichtung getroffen werden, wie z.

   B. unterschiedliche Einstellung des Gelenkzapfens für die Stange c an der Hilfskurbel k oder Verstellbarkeit des Widerlagers für die   Schraubenfeder a   oder dgl. Um Personen, die wohl noch beide Fiisse   besetzen, deren einer   aber nicht gebrauchsfähig z. B. steif ist,   während   der Fahrt eine Auflage zu verschaffen, kann eine geeignete starre Fussstütze vorgesehen sein. In dem dargestellten Beispiel dient diesem Zweck eine an der Hinterradgabel starr befestigte Kurbelstange b. 



   Die Wirkungsweise der   Einrichtung   ist unter   Berücksichtigung   des Vorangeführten und der Zeichnung ohne weiteres klar. Wenn die Tretkurbel a ihren tiefsten Stand erreicht   und nur   
 EMI1.2 
 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 Pedal crank drive to enable riding8 by one-legged friends and others,
People with a handicap in the use of their second leg on normal twin wheels.



   The present invention consists in a wheel pedal crank drive, which one-legged or other persons disabled in the use of their second leg can drive on normal. allows two-wheelers. As is well known, it was previously not possible for such disabled people to take advantage of a normal two-wheeled vehicle, in particular with a freewheel, be it with or without a coaster brake and gear ratio, because overcoming the dead center poses difficulties with just one crank. Driving is particularly difficult with free-wheeling bikes, as the crank is not necessarily taken along.

   If only one crank handle has reached the lowest point, it has to be picked up again by the same foot, which is at least a long time laborious and tiring. This deficiency is remedied by the present invention in a simple manner that the defiance crank is so under the influence of a coil spring, an elastic band or the like. That it constantly strives to reach its highest position.
 EMI1.1
 bearing IV provided rod c comes into effect on an auxiliary crank k provided in place of the 7th wide pedal crank. In order to allow a different tension of the spring s or the like. A suitable device can be made, such as, for.

   B. different setting of the pivot pin for the rod c on the auxiliary crank k or adjustability of the abutment for the coil spring a or the like. To people who probably still occupy both Fiisse, but one of which is not usable z. B. is stiff to provide a support while driving, a suitable rigid footrest can be provided. In the example shown, a connecting rod b rigidly attached to the rear fork is used for this purpose.



   The mode of operation of the device is immediately clear, taking into account the above and the drawing. When the crank a reaches its lowest position and only
 EMI1.2
 

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

3. Fahrradtretkurbelantrieb nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass i die Spannung der Schraubenfeder (s) oder dgl. regulierbar ist. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 3. Pedal crank drive according to claims 1 and 2, characterized in that i the tension of the helical spring (s) or the like. Can be regulated. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT76338D 1915-05-19 1915-09-27 Bicycle crank drive to enable one-legged people and other people with a handicap in the use of their second leg to ride normal two-wheelers. AT76338B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE76338X 1915-05-19

Publications (1)

Publication Number Publication Date
AT76338B true AT76338B (en) 1919-05-10

Family

ID=5637419

Family Applications (1)

Application Number Title Priority Date Filing Date
AT76338D AT76338B (en) 1915-05-19 1915-09-27 Bicycle crank drive to enable one-legged people and other people with a handicap in the use of their second leg to ride normal two-wheelers.

Country Status (1)

Country Link
AT (1) AT76338B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740970C (en) * 1942-11-15 1943-11-01 Kurt Rosetz Adjustable footrest for cycling disabled people
US2484472A (en) * 1948-08-10 1949-10-11 Charles W Simpson Propulsion aid for velocipedes
WO1998030434A2 (en) * 1997-01-08 1998-07-16 Steffen Heintz Free wheel pedal crank and bicycle or medical exercise devices equipped therewith

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740970C (en) * 1942-11-15 1943-11-01 Kurt Rosetz Adjustable footrest for cycling disabled people
US2484472A (en) * 1948-08-10 1949-10-11 Charles W Simpson Propulsion aid for velocipedes
WO1998030434A2 (en) * 1997-01-08 1998-07-16 Steffen Heintz Free wheel pedal crank and bicycle or medical exercise devices equipped therewith
WO1998030434A3 (en) * 1997-01-08 1998-11-05 Steffen Heintz Free wheel pedal crank and bicycle or medical exercise devices equipped therewith

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