DE73955C - Tricycle with two front steering wheels and a drive wheel in the middle behind them - Google Patents

Description

IMPERIAL

PATENT OFFICE.

Driving wheel.

'The invention relates to tricycles for several people.

In the bicycles of this type in use up to now, the saddles for the riders are between attached to the wheels, and consequently climbing and dismounting is very difficult only possible when the bike is at a standstill, but even then it is very uncomfortable. If further If the bike turns over, both riders become entangled in the wheels and frame.

The first main purpose of the invention is to remedy the above mentioned inconveniences and to create a three-wheeler which can be climbed as easily as a two-wheeler by women can be, and with which the risk of getting into the wheels when knocking over, only is very low. This is done by arranging the saddles or the seats for the riders reached on both sides of a single rear-mounted drive wheel. Next will be the The purpose is to set up the bicycle in such a way that it can be turned or turned automatically tilts to the side, which is of great value in fast ferries.

A side view of the new tricycle is shown in Fig. Ι the accompanying drawings; Fig. 2 is the front view, Fig. 3 is a plan view and Fig. 4 shows on an enlarged scale the establishment of the determination of the saddles.

The front wheels α α run in separate forks bb ; their axes are in one line when the wheels are parallel to the rear wheel. Every fork is in the ordinary. Wise attached to the head b ¹ , which passes through the sleeve c and is rotatably supported therein. The sleeves cc are firmly connected by the spreaders c ¹ c ^1.

Four tubes dd ^l and ee ¹ branch off to the rear from the lower spreader c ¹ ; the rear ends of the tubes dd '■ form the fork d ^{1 of} the rear wheel. The two outer tubes ee ¹ extend to the rear and then go up on both sides of the rear drive wheel ¹ , where they accommodate the angle ff ^{1 of} the saddles. From the tubes dd ^l rise, the central supports r r ¹ , following almost the curve of the rear wheel; at the top they are connected to one another by a yoke. On both sides of the rear wheel, the rear struts gg ^{1 are} attached, which connect the ends of the rear fork with the carriers rr ¹ in about the middle. Crossbars \ ^ ¹ extend from the hub gg ¹ after the upwardly curved rear portion of the tubes e e ¹ over, and thus the same stiff from. The central beams rr ¹ are connected by a rod J to the upper strut c ^l , and this rod J with the upper part of the beams rr ¹ and the struts gg ^{1 can be called} the backbone of the bicycle. The aforementioned parts are, if possible, made hollow or formed from tubes and connected in a known manner by welding, soldering, etc.

The tubes dd ¹ receive the well-known deep deflection as in bicycles for women, and in the deepest part the usual reinforcements k for the bearing of the crankshaft are attached. The tubes ee ⁱ are also bent accordingly and carry the bearings k ^l k ^l for the crankshaft in a line

Claims (4)

with the middle bearing k. Said shaft is provided with four cranks η and pedals n1, of which two outer ones are intended for a driver in the saddle on the right or left. A third saddle p1 is attached to the backbone, which a person can use to ride the bike alone if necessary, using the two inner cranks. The saddles ρ are, as already mentioned, arranged on both sides of the rear wheel, and if the riders have approximately the same weight, the adjustment, tightening, etc. can be done in a known manner and with the usual means. It will be admitted that with this arrangement the riders can easily get on, as with a ladies two-wheeler, that they are not obliged, as with other bicycles, to climb between parts of the frame or between the wheels. There is little danger of overturning, but if it should happen, both riders can slide freely out of their saddles and are in no way hindered by parts of the bicycle. With tricycles of the usual shape you can only negotiate sharp curves slowly, if the movement is too fast, the centrifugal force knocks the bike over safely and lifts the rider out of the saddle. The bicycle of the present invention should automatically incline and, like two-wheelers, assume an inclined position that is directed towards the inside of the curve. This is achieved by the following means: The forks are bent from the steering head towards the hub and are eccentric. The steering head is not vertical, but is strongly inclined. The axles of the steering wheels are mounted so that they respectively. their extensions fall in the same straight line when the bicycle is running in a straight line, d. H. the wheels are parallel to the rear wheel, that is, they are vertical. If the left steering wheel z. B. thrown around to the left, as a result of the. inclined and eccentric storage of the fork in the steering head lower the frame of the bike on this side. If you turn the right steering wheel to the left, the frame is lifted here for the same reasons. If both steering wheels are turned to the left at the same time, the whole bicycle and also the rear drive wheel come into an inclined position, which is so necessary and desirable when negotiating sharp curves. If the steering wheels are turned to the right, the bike leans over to the right in the opposite direction and allows rapid travel on a right-turning curve. The controls are coupled to one another by a rod s, acting on the arms b'2, in such a way that the turns of the steering wheels are forced to go parallel. Each fork carries a control rod with handles at the top in the usual known manner. So that riders of unequal weight can use the bike, the saddles arranged laterally to the rear wheel are made adjustable in the transverse direction, in the following way: The saddle carriers or L-supports f \ Fig. 4, respectively, are for both saddles. Provided only for one with a rotating head t on which the saddle rests. If the support f1 is now rotated to the right or left in its clamp, the rotary head t can more or less approach the rear wheel respectively. be removed from it. Once this has happened, roughly corresponding to the weight of the rider, the rotating head t allows the saddles to be adjusted easily and conveniently parallel to the bicycle. Pateνt claims: 1. A tricycle with two front steering wheels and a same lying in the middle behind the drive wheel, characterized by to, both sides of the rear wheel (a ^l j arranged saddles (P) for the purpose facilitate climbing of. 2. An embodiment of the tricycle identified under 1. with a steering device, which is characterized in that the steering wheels laterally next to, the extended actual 'handlebar in forks (b) . are stored and the steering rods themselves are rotatably guided in inclined sleeves (c) , so that when turning the steering forks in the same sense, one side of the frame is raised and the other is lowered, and at the same time the drive wheel and control wheels assume an inclined position, whereby driving on curves is made possible easily and without danger. 3. An embodiment of the under 1. marked Tricycle with a rotating head ßj on the L-support for the saddles is appropriate, for the purpose of 'the correct adjustment of the saddles parallel to the wheel, when the L-pillars are laterally adjusted to compensate for the weight of different drivers have been., 4. An embodiment of the under 1. marked Wheel, in which a third saddle is attached in front of or above the driving wheel. 1 sheet of drawings.