SU32940A1 - Tandem bike - Google Patents

Description

In the proposed tandem bicycle, made up of a serial connection of ordinary bicycles by reinforcing the lower end of the forks from the front wheel of a subsequent bicycle on the rear axle in front, FOR greater flexibility, the reinforcement is made through a horizontal hinge composed of the end of the forked fork from a special bolt with the hub and from the support stand, rigidly mounted on the rear axle of the bicycle in front. To give the same strength to the front fork of the bike to be attached, this fork is reinforced with a longitudinal wooden beam, fastened to it by brackets and, moreover, by bolts coming from the clamp covering the steering wheel.

In the schematic drawing of FIG. 1 shows a general view of a bicycle; FIG. 2-side view of the hinge; FIG. 3 is a section through it. In FIG. 2 and FIG. 4 types of reinforcing bar.

The tandem bicycle consists of ordinary bikes 7 and 2 (Fig. 1) (there may be more of them), and the second bicycle, which retains all its parts, is attached to the second one by removing the front wheel and strengthening the forked fork with the help of horizontal hinges 3 to

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rear axle of the first bike. Each hinge (fig. 2 to 3) is made up of the end of a FORCH 5, a bolt / 7 (with sleeve 72, washers 13 v (14 and nut 75) and a support post 76 rigidly mounted on the rear axle 77 of the bike in front and secured with a nut 18. Fork 5 of the second bicycle with the help of brackets P and 70 and bolts 6 l 7 is pulled in a wooden beam going along the fork 4. BOLTS 5 and 7 are connected to the FORK by means of the clamp 8, which covers the steering wheel.

With the help of hinges 3, greater flexibility is achieved in the vertical PLANE of the connected bicycles, while the timber bar 4 serves to impart greater strength to the front fork of the attached bicycle.

The subject matter of the invention.

1. A tandem bicycle, made by sequentially attaching ordinary bicycles, completed by strengthening the lower end of the FORK and the front pre-wheel removed on the rear axle in front of the bicycle, characterized in that it strengthened the vertical plane. the end of the front fork

the attached bike on the rear axle in front of the next bike is made through a horizontal hinge composed of the end 5 of the fork, the bolt // with the sleeve 12 and the supporting stand / 6 rigidly mounted on the rear axle / 7 in front of the next bike.

2. The form of the bicycle of p. 1, characterized in that in order to give the front fork of the attached bicycle of greater strength, wooden beam 4 is used, drawn in this fork by means of brackets 9, 10 covering the fork, and bolts 6, 7 with clamp 8, covering the steering wheel.

FIG. one