Welo is an invention of Louis Weytjens (WEytjens LOuis) in fact it was intended to build houses with this construction system, without using cement. The interconnections between the stones are made via dovetail joints.

He has taken a patent on this construction method and it was shown at the 1958 world exhibition in Brussels. Several houses were built with WELO stones.

The plastic building blocks are a consequence of this method of construction and was also extra propaganda for the building system.

If you want more information or photos of the construction sets, you can always contact me via the contact form on www.toycollector.be.