DE93198C - - Google Patents

Description

IMPERIAL

PATENTAM

PATENT LETTERING

CLASS 63 !, / Saddlery and wagon construction.

Patented in the German Empire on August 12, 1896.

The present invention forms a drive device for bicycles with hand and foot operation, which makes it possible to operate the manual drive so effectively on the steering fork shaft to be arranged and transferred to the rear wheel driven by the feet, while maintaining the usual Frame and foot drive, the steering ability of the steering wheel is not affected when the manual drive takes effect.

In order to obtain the most effective manual drive possible, i.e. the longest possible arm lever, the axis α of the arm lever (or handlebar) that swings up and down, moved forward from the shaft of the steering wheel, is mounted in such a way that it is connected to the fork shaft b Support c and struts d is held. The arm levers (or handlebars) will therefore be able to influence steering wheel A in the same way as a fixed handlebar.

The arm force is transmitted to the drive wheel in two ways.

The construction shown in FIGS. 1, 2, 3 and 3a illustrates a manual drive in which the two arm levers e, as it were forming a handlebar swinging about the axis α, make joint movements up and down.

In the construction shown by FIGS. 4 to 7, however, the arm levers e ¹ e ^{2 describe} opposite movements, so that it is possible to make the same or opposite rhythmic movements with the arms and feet on the same side.

Fig. Ι represents a side view of the bicycle with uniform arm movement,

2 shows a detailed view of the fork head with the manual drive,

Fig. 3 is a longitudinal section through axis xx (Fig. 2) of the fork stem.

The upward and downward movement of the arm levers e is transmitted to the ring h by a crank f, which ends in a fork shape and carries the two connecting rods g , which is articulated to the rods g by its pin h ^1.

The lower cylindrical part of the ring h is covered by a second ring i. rotatably enclosed, which is screwed by washer and nut k against the collar / of the ring h.

The ring i carries the connecting rods m on its pin i ¹ , which are connected in an articulated manner to the cranks n of the toggle lever no.

The rod ρ hinged to the crank 0 of the toggle lever no transfers in a suitable manner the movement of the toggle lever to the axis q of the pedal crank bearing.
This peculiar arrangement of the double ring hi makes it possible to transfer the upward and downward movement of the crank f to the toggle lever rotatably mounted in its axis r on the frame C without influencing the controllability of the steering wheel A.

In order to reduce the friction between the rings h and i , the rings can be conveniently connected by ball bearings, the nut k prefst a cone against the lower ball bearing instead of the washer.

The corresponding construction for opposite movement of the arm levers shows in:

Fig. 4 is a side view of the bicycle,

5 shows a detailed side view of the manual drive,

Fig. 6 shows a longitudinal section according to yy (Fig. 5) through the axis of the control fork tube and

7 shows a basic outline of the manual drive with the steering wheel turned laterally to the right.

Here, too, the axis α of the arm levers e ¹ e- (designed as a double axis) is firmly connected to the fork shaft b of the steering wheel A in the same way by means of support c and struts d.

The shaft b of the steering wheel fork D is here, however, formed into a double ^{shaft b 1} b ² , which protrudes with its lower tube b into the fork tube and is firmly connected to it by the clamping ring 5.

Corresponding to the rings h (FIGS. 1 to 3) here (FIGS. 5 and 6) the rings t ¹ 1- are guided on the double shaft b ¹ b , while their sliding up and down is effected by the cranks f ^l f ' ² which are connected by the rods g ^l g ~ with the pin t ³ f ^{4 of} the rings t ¹ i ² .

The rings t ¹ 1 are at their Fufse to segmental discs t ^'a formed, the edge of u ¹ w ^2, the segment of a ring is that its center point is not t with the rings ¹ 1 ³ has in common, but its center position in the axis of the steering fork tube E.

The pushrods ν encompassing the edge u ^l u ² with their claw v ¹ are guided in coulisses w parallel to the axis yy of the control fork tube. Since the coulisse n> sit firmly on the control guide tube, F of the frame C, the rods ν can only move up and down, while their claws v ¹ slide on the edge n ¹ and ² when the steering wheel and with it the Double shaft b ^l b ' ² is rotated about its axis yy.

To reduce the friction, the connection between the claw v ^l and the disk edge M ¹ M ^{2 can} also be produced by ball bearings or rollers, similar to the ring connection hi.

Accordingly, the movement of an up and down on the fork shaft is also here guided double ring transferred to push rods, which on the one hand to the rack frame of the bicycle and on the other hand not influenced in their movement and effect when the steering wheel is turned sideways.

The connecting rods are ν with the push rods m * m ^ä hingedly connected and act on the cranks w ² n ³ which bethätigen a r with its axis ² mounted on the control guide tubes F sprocket%, whose revolution q by a chain to the axis of Tretkurbellagers is transmitted.

It could here in the same way as in Fig. Ι, reach a toggle lever with the connecting rod for transmission of the arm strength on the bottom bracket to the application, as well as in Fig. 3 a shown combination of the guided push rods w in Coulissen ν with connecting rod m ³ and the axis r ¹ a mounted on the control guide pipe F sprocket ^ ¹ operated crank n ¹ in the in Fig. ι through 3 Construction with oscillating handlebar reach for use may include, but change to the essence of the invention in two Construction types something. Likewise, the transmission of the rotating movement of the axis r ¹ / - ² , in which the arm force comes into effect, in any other way, such as, for. B. done by belts, conical gears with rod, etc. on the crank axle q of the bicycle, as it is also irrelevant for the essence of the invention whether the two arm levers swing up and down as a handlebar together or whether they like the feet in opposite directions. and work downwards.

The construction of the double ring shown in Figs. 8 and 8 a allows the in Fig. 1 to 3 shown joint movement of the arms with that shown in FIGS Combine Construction.

It is then only necessary to attach the disk ring T with the two guides after removing the rings if ¹ and t ² and the connecting rod w ² , so that only one crank w ^{2 is} actuated by the connecting rod m ¹ .

This also does not change anything in the essence of the invention, which consists in that a ring (or other sliding piece) is actuated by the arm force, which on the one hand on the shaft of the control fork tube (or its extension) up and down is, while he is at the same time when steering the wheel in a second, connected with him Rings of the rotation of the hand drive bearing steering wheel can follow, which second Ring can only move up and down parallel to the axis of the head tube, without the Rotation of the steering wheel to participate, so that the second, on the frame of the bicycle guided ring by suitable mechanisms that are placed on the guide ring (or sliding piece) transfers the arm force acting on the axis of the crank bearing without the control

The ability of the bike is influenced by it, using the arm's strength as much as possible.

Claims (2)

Patent claims: i. An auxiliary manual drive for bicycles attached to the handlebar, characterized in that the up and down movement of the hand lever is transmitted to a sleeve (h) which slides on the shaft (b) of the steering wheel fork (D) and a on this sleeve seated, on the same rotatable sleeve (i) carries the points of application for the rods leading to the foot drive and is prevented from rotating against the frame by a guide located on the bicycle frame, for the purpose of the force effect of the arm levers on the rear drive wheel (B) to be able to transmit without affecting the steering ability of the steering wheel (A) (Fig. I, 2 and 3). 2. An embodiment of the device identified under 1., in which the inner sleeve (h) is replaced by two individual sleeves (t ¹ f ² ) which are placed on the double shafts (b ^l b ² ) of the control fork tube (E). slide and are connected to segment pieces (Pu ¹ Pu ¹ ) which are centric to the control tube axis and which guide the heads (v ¹ v ¹ ) of the push rods (vv) going after the foot drive, which are movable on the control guide tube (F) of the frame (C) store, for the purpose of enabling the corresponding transmission even with alternating upward and downward movement of the arm levers (Fig. 4, 5 and 6). 1 sheet of drawings.