DE64643C - Crank for bicycles and the like. With a slit eye and flat disc-shaped wedge - Google Patents
Crank for bicycles and the like. With a slit eye and flat disc-shaped wedgeInfo
- Publication number
- DE64643C DE64643C DENDAT64643D DE64643DA DE64643C DE 64643 C DE64643 C DE 64643C DE NDAT64643 D DENDAT64643 D DE NDAT64643D DE 64643D A DE64643D A DE 64643DA DE 64643 C DE64643 C DE 64643C
- Authority
- DE
- Germany
- Prior art keywords
- crank
- bicycles
- eye
- wedge
- flat disc
- 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 - Lifetime
Links
- 238000013459 approach Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
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
- B62M3/00—Construction of cranks operated by hand or foot
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Description
KAISERLICHESIMPERIAL
' PATENTAMT ' PATENT OFFICE
Die vorliegende Erfindung bezieht sich auf eine abnehmbare Kurbel für Fahrräder, bestehend aus einer gespaltenen Nabe, welche mittelst eines Querbolzens oder einer Schraube zusammengezogen werden kann, und aus einem von dieser Nabe- getragenen kreisförmigen Vorsteckkeil, welcher in das Auge der Nabe derart eindringt, dafs derselbe in eine halbkreisförmige Oeffnung oder solchen Einschnitt in der Achse, auf welcher die Kurbel befestigt wird, eingreift.The present invention relates to a detachable crank for bicycles, consisting of from a split hub, which by means of a cross bolt or a screw can be pulled together, and from a circular plug-in wedge carried by this hub, which penetrates the eye of the hub in such a way that it becomes semicircular Opening or such incision in the axis on which the crank is attached, engages.
Der Zweck dieser Erfindung besteht darin, eine einfache und schnell abnehmbare Kurbel, welche durch beständigen Gebrauch nicht in Unordnung geräth, in leichter Weise herzustellen. The purpose of this invention is to provide a simple and quickly removable crank, which by constant use does not get disordered, easy to manufacture.
Fig. ι dieser Zeichnung ist eine Seitenansicht der Kurbel und Fig. 2 eine Vorderansicht, theilweise im Schnitt.Fig. Ι of this drawing is a side view of the crank and Fig. 2 is a front view, partly in section.
Die Nabe A1 der Kurbel A (von gewöhnlicher Construction) ist bei a1 gespalten, wodurch zu beiden Seiten die Ansätze ■ oder Oesen α α gebildet werden.The hub A 1 of the crank A (of ordinary construction) is split at a 1 , whereby the approaches ■ or eyelets α α are formed on both sides.
Durch diese Oesen geht eine Schraube oder ein Bolzen B, und zwar durch die eine frei, während sich in die andere das Gewinde des Bolzens einschraubt, wodurch die beiden Oesen α α einander genähert und die" Oeffnung der Kurbelnabe so zusammengedrückt wird, dafs dieselbe die Achse X fest pmfafst. Um den Bolzen B in dieser Lage festzuhalten, wird eine Mutter b auf das Ende des Bolzens B aufgeschraubt. In dem zwischen dein beiden Oesen α α gebildeten Spalt ist ein flacher Keil C angeordnet, welcher halbkreisförmig in das Auge der Nabe A1 der Kurbel vorspringt und durch welchen der Bolzen B durchgeht. Die Achse X ist in ihrer Längsrichtung mit einem halbkreisförmigen Ausschnitt χ für die Aufnahme des halbkreisförmigen Theiles des Keiles C versehen.A screw or a bolt B passes through this eyelet, namely through one freely, while the thread of the bolt is screwed into the other, whereby the two eyelets α α approach each other and the "opening of the crank hub is compressed so that it the Axis X is firmly fixed. To hold the bolt B in this position, a nut b is screwed onto the end of the bolt B. In the gap formed between the two eyelets α α , a flat wedge C is arranged, which is semicircular in the eye of the hub A 1 of the crank protrudes and through which the bolt B passes. The axis X is provided in its longitudinal direction with a semicircular cutout χ for the reception of the semicircular part of the wedge C.
Um die Kurbel auf der Achse zu befestigen, wird der Keil C aus dem Spalt al entfernt und die Kurbel auf die Achse aufgebracht. Hierauf wird der Keil C in den Schlitz a1 eingeführt, bis derselbe in dem halbkreisförmigen Ausschnitt χ der Achse X ruht. Dann wird der Bolzen B durch die Ansätze oder Oesen a a und durch ein Loch des Keiles C gesteckt und darin befestigt, wodurch die Nabe der Kurbel auf der Achse festgehalten und gleichzeitig der Keil C in den Einschnitt χ eingedrückt wird.To fix the crank on the axle, the wedge C is removed from the gap a l and the crank is placed on the axle. The wedge C is then inserted into the slot a 1 until it rests in the semicircular cutout χ of the X axis. Then the bolt B is inserted through the lugs or eyelets aa and through a hole in the wedge C and fastened therein, whereby the hub of the crank is held on the axle and the wedge C is pressed into the incision χ at the same time.
Bei der vorliegenden Construction haben Nabenauge und Achse eine runde Form, lassen sich daher leicht und billig herstellen.In the present construction, the hub eye and axle have a round shape can therefore be produced easily and cheaply.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE64643C true DE64643C (en) |
Family
ID=338501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT64643D Expired - Lifetime DE64643C (en) | Crank for bicycles and the like. With a slit eye and flat disc-shaped wedge |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE64643C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4728218A (en) * | 1986-05-07 | 1988-03-01 | Durham Roger O | Locking key mechanism |
| DE3839325A1 (en) * | 1988-11-22 | 1990-05-23 | Bayerische Motoren Werke Ag | Clamping sleeve that can be mounted on a shaft, particularly a clamping sleeve of a steering gear |
| DE3930304A1 (en) * | 1989-09-11 | 1991-03-14 | Litton Precision Prod Int | CLUTCH HUB |
| EP1342656A3 (en) * | 2002-03-08 | 2003-10-15 | Shimano Inc. | Bicycle crank assembly and assembly tools |
| WO2004048188A1 (en) * | 2002-11-26 | 2004-06-10 | Silvio Volpatti | Pedal crank device |
| US6988427B2 (en) | 2001-11-23 | 2006-01-24 | Shimano, Inc. | Seal assembly for a bicycle bottom bracket |
| DE102015112027A1 (en) * | 2015-07-23 | 2017-01-26 | Thomas Reiter | Rotating work unit |
-
0
- DE DENDAT64643D patent/DE64643C/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4728218A (en) * | 1986-05-07 | 1988-03-01 | Durham Roger O | Locking key mechanism |
| DE3839325A1 (en) * | 1988-11-22 | 1990-05-23 | Bayerische Motoren Werke Ag | Clamping sleeve that can be mounted on a shaft, particularly a clamping sleeve of a steering gear |
| DE3930304A1 (en) * | 1989-09-11 | 1991-03-14 | Litton Precision Prod Int | CLUTCH HUB |
| US6988427B2 (en) | 2001-11-23 | 2006-01-24 | Shimano, Inc. | Seal assembly for a bicycle bottom bracket |
| EP1342656A3 (en) * | 2002-03-08 | 2003-10-15 | Shimano Inc. | Bicycle crank assembly and assembly tools |
| WO2004048188A1 (en) * | 2002-11-26 | 2004-06-10 | Silvio Volpatti | Pedal crank device |
| DE102015112027A1 (en) * | 2015-07-23 | 2017-01-26 | Thomas Reiter | Rotating work unit |
| DE102015112027B4 (en) * | 2015-07-23 | 2017-03-23 | Thomas Reiter | Rotating work unit |
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