French hydraulic brake, mainly for @Mickeyspinn but interesting for all, I can't find a date but it looks 50's. Translation below.

HYDRAULIC BRAKING

At the end of the Paris Show, we were able to try out a cycle equipped with hydraulically controlled rim brakes.

This interesting 100% French creation was presented by Camille Daudon.

Externally, there is nothing very curious; the welded slatted brakes seem classic; only the small horizontal cylinder, between the ends of the arms, to which are welded the tubes for the arrival of the liquid acting on the pistons, shows that we are in front of an unusual novelty.

From the front cylinder, the control tube of the rear brake comes out, which synchronises the work of the two brakes with a single turning handle. It will be easy to hide the control tubes in the frame later on, which will further contribute to the neatness of the exterior.

The fluid reservoir is located in the right-hand twist grip.

On test, the power is very satisfactory and remains very flexible, depending on the effort, which is very low, that one exerts on the rotation of the handle.

It does not seem that such a braking system, produced in series, is much more expensive than the classic system; on the other hand, the power remains very great, even with the rotating handle, which does not have a large lever arm.

It is certain that such a control can please many users who are reluctant to loosen their fingers from the handlebars, or who get tired in a prolonged effort.

In any case, let's trust Camelot to do the right thing.

In any case, let's trust Camille Daudon to complete the final development and marketing of the French hydraulic brake.
 

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No more slipping seat posts 👍Not pretty though. Translation below.
A curious application on this seatpost of the quick release combined with a rack. Of course, the height adjustment and locking, which is effective, is really instantaneous. But is this VINCAR patent intended for rental bikes?
 

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Also not French but reviewed by. The forerunner of carbon fibre? Think Vitus, Technium, Cadex. Then realise its 1955! Translation below.
Hercules" prototype frame
Prototype frame of the large firm "Hercules" with the following advantages: Very high tensile strength and high impact resistance; very low specific weight; total resistance to atmospheric corrosion; permanent and indestructible colouring in all shades. This formula of a compound of synthetic resins and glass fibres "woven" on a core, laminated and fired to make a tube, is said to give strength equal to steel and weigh five times less. The assembly is done in steel fittings by means of a bonding process using a resin that has proved its worth in the British aeronautical industry. The fork remains in steel.
 

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Demountable Rene Herse. Translation below.

A beautiful dismountable bike

René HERSE succeeded in this tour de force ... ... Keeping a dismountable machine looking like an elegant bicycle

It is relatively easy to make a dismountable bicycle, and we have seen various examples, either in France or abroad, and more particularly in Germany, as at the 1960 Frankfurt Fair, where many manufacturers presented a folding or dismountable bicycle, for transport in the boot of a car, in a boat or even a light aircraft.

But it must be admitted that almost all these models, although they possessed the necessary qualities of rigidity and small size, were lacking in elegance.

Large articulated joints, small wheels, long seat and stems gave these models a strange and often inelegant appearance. And then, disassembly and reassembly were not very easy or quick either.

René HERSE, the master craftsman from Levallois, tackled this problem and it can be said that he was fully successful.

The bicycle he made retains its classic line and all its elegance, as can be seen on the drawing above. The disassembly, as René HERSE shows us on the picture, is done in two parts. The locking of the assembly fittings as well as the fixing of the handlebars is ensured by CAMPAGNOLO quick-releases, one on the handlebars, one on the seat fitting and two on the down tube. Note that the parts of the tubes that have a fitting or receive a con-trol sleeve are chromed.

Disassembly - folding is done in 10 seconds. As for the reassembly, it is done, without hurrying, in 30 seconds; and the rigidity of the bicycle is absolutely the same as that of a traditional bicycle, we could note it by a fast test.

Another achievement by René HERSE and naturally a great success.

D. REBOUR.
 

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Pace was here maybe....Translation below.
NOVY exhibited this original bicycle in which all the tubes, even the bases, uprights and sleeves, were square.
 

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