IL97076A - Twin wheel drive bicycle - Google Patents

Description

WHEELS DRIVE present invention relates to cycle vehicles and in particular to has to its object to provide a cycle vehicle which in addition to the conventional bicycle with wheel as a front wheel Conventional bicycles have been improved in regard to the driving force by a gear shifting mechanism to the rear There exists a form of the front wheel drive but it is related to training bicycles example is a german patent 25 34 this device the transmission is by an axle and in my invention the transmission is by chain which s simple and cheaper especially as regards to the ing Addition of the front wheel drive engages the total body driving force which in effect almost doubles the mobility of the vehicle with minimal additional since required power is equally transmitted from all muscles of the From the above mentioned reason the gear shifting mechanism may be at leas although the front wheel drive may be used with this shift It is easy to drive the twin wheels drive bicycle for every one cycling and may be used for all purposes of the ordinary in addition engages the whole body in physical The front wheel drive device consists principally of the same elements as a rear wheel except that the steering handlebars are replaced by pedals converted gearing between the handles and the front wheel is similiar to that of the rear wheel as shown in Figures I and Since the brake mechanism of both wheels are of the type no extra brake device is Invention will be further described with reference to V a pedal t It any of the tide of Extending and dovnvardly from the described treat of a f the frame in a bo incorporated for olding the frame Junction tho soot tube to a ahead of carried mounted at the extend upper end Of the tube 22 to tho wheel axle the rear par of carrying the wheel A detachable carrier by 26 to the upper segment of the seat tube stays to the rear part of carrying rear wheel tube by long typo of saddle carried on tho tube 22 by clip part o saddle reinforced bp two to the ends of the rear The long of the saddle increases tho distance between the knees and handles 9 of tho front wheel drive vhach to prevent the contact between the the housing for of pedals tf vhich 18 32 a chain drive rear protector proventa be a illustrated in Ϊ wheel device by to the rear wheel drive as assembled difference that the first assemblage pedals replaced by handles the chain is longer and therefore on stroteh by a email The length of chain may be changed according to the height of handles rotated and steered by drive is rotated to Simultaneous driving and the front la in presence of torpedo brake in o of later on changing be applied to gain power to invention beat results are achieved driving the and the front tho bo driven also separately and front front driving device say installed also tricycles t insufficientOCRQuality

Claims (9)

nature of performed,

1. A two-wheeled cycle vehicle having front and rear tyred wheels of any conventional bicycle diameter suitable for children and adults and a conventional brake and gear chan ing, mechanism of the rear wheel,wherein the handlebars are replaced by rotating handles which are housed in the cranK ,and wherein said axle housing the rotating handles drives the front wheel sprocket via a chain wheel.

2. A vehicle according claim I,wherein the aaid chain is kept on stretch by a small wheel connected to the fork arm of the front wheel*

3. A vehicle according t the claim I and 2, wherein said crank axle housing said rotating handles and the said chain, adheres above to the upper end of said handlebar stem, and is connected downwards via two arms to the upper ends of fonc arms of the front wheel.

4. A vehicle according to the claim 3, wherein said chain is covered by a protector .

5. A vehicle according to any of the preceding claims, wherein the brake assembly of the front wheel if preferably of " torpedo" (back hand brake) type, but said brake assembly may be ol any other conventional type.

6. A vehicle according to fifii/ t/ claims I to 5, wherein said front wheel is supplied with simple gear mechanism or with a gear cnanging assembly. Of

7. A vehicle according to an preceding claims including a saddle , of the long type to prevent the interfering in driving by touching a driver's knees with the steerin handles.

8. A vehicle ac&ording to any of the preceding claims, wherein the'front wheel driving assembly will be built into a tricycle used to carry loads or any other purpose.

9. A two wheeled cycle vehicle substantially as described with reference to any or the accompanying drawings .