AT6972B - Bicycle crank. - Google Patents
Bicycle crank.Info
- Publication number
- AT6972B AT6972B AT6972DA AT6972B AT 6972 B AT6972 B AT 6972B AT 6972D A AT6972D A AT 6972DA AT 6972 B AT6972 B AT 6972B
- Authority
- AT
- Austria
- Prior art keywords
- lever
- pedal
- crank
- spring
- arm
- Prior art date
Links
- 230000007423 decrease Effects 0.000 description 1
Landscapes
- Steering Devices For Bicycles And Motorcycles (AREA)
Description
<Desc/Clms Page number 1>
Fahrradkurbel.
Die anliegende Zeichnung veranschaulicht den Anmeldungsgegenstand und zeigt in Fig. 1 ein mit einer beim Treten sich verlängernden Kurbel versehenes Fahrrad, in
Fig. 2 und 3 die Einrichtung der Kurbel selbst in Vorderansicht und im Grundriss.
EMI1.1
weise durch einen Schraubenstift c. befestigt. Mit dieser Kurbel b ist bei e ein doppelarmiger Trethebel d verbunden, der an seinem einen Ende das Pedal trägt, und dessen anderes, über die Tretkurbol. achse hinausragondes Ende mit dem freien Ende der Kurbel 11 durch eine beim Treten sich zusammendrückende Feder verbunden ist.
Infolge der Anordnung der beiden doppelarmigen Hebel b, d und der Zwischen- schaltung der Feder g zwischen die freinen Enden dieser beiden Hebel, beginnt die Ver- längerung der Kurbel sofort, sobald der Trethebel seine höchste Lage überschritten hat, denn in diesem Moment findet durch den Druck auf das Pedal eine Drohung des Hebels d um seinen Drehpunkt e und damit das Grösserwerden des Momentenarmes : x statt.
Die Verlängerung des Pedals nimmt ganz allmählich auf dem halben Arbeitsgangs
EMI1.2
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Bicycle crank.
The attached drawing illustrates the subject of the application and shows in FIG. 1 a bicycle provided with a crank which lengthened when pedaling, in
2 and 3 the device of the crank itself in front view and in plan.
EMI1.1
wise by a screw pin c. attached. With this crank b, a double-armed pedal lever d is connected at e, which carries the pedal at one end, and the other, via the pedal crank. Axis hinragondes end is connected to the free end of the crank 11 by a spring compressing when pedaling.
As a result of the arrangement of the two double-armed levers b, d and the interposition of the spring g between the free ends of these two levers, the lengthening of the crank begins immediately as soon as the pedal lever has passed its highest position, because at this moment it takes place the pressure on the pedal a threat of the lever d around its pivot point e and thus the increase of the moment arm: x instead of.
The extension of the pedal decreases very gradually on the halfway point
EMI1.2
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT6972T | 1900-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT6972B true AT6972B (en) | 1902-03-10 |
Family
ID=3497422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT6972D AT6972B (en) | 1900-07-13 | 1900-07-13 | Bicycle crank. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT6972B (en) |
-
1900
- 1900-07-13 AT AT6972D patent/AT6972B/en active
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