This is an incredible resource. Richard Harris, English architect, former director of the Weald and Downland Open Air Museum in West Sussex, and longtime friend, sent this link to early shepherd’s caravans. This led me to explore some of the other links at this incredible website.
[Inadequately translated from French by Google Translate. Got a better one from “Roulotte No 7” here?]
This shepherd’s cabin trailer is preserved at the National Sheepfold of Rambouillet near Paris, where it was presented to the public at an exhibition in 2010. It consists of a small house with two gutter and two gears joined boards under a gable roof, house that sits on two parallel rails extending to the front of the machine in the form of two arms between which articulates a metal wheel on an axle.
Two iron hooks attached on top of the two arms were to be used to tow the vehicle. Another fixed axle with two wheels in iron, is located under the rear part of the cabin, freeing enough room in front to accommodate an entrance closed by a door hinged on the left against the forearm. This gate is formed of contiguous vertical boards fixed on two large horizontal cross. The roof seems to be covered with waterproof canvas.
On the wall of the front sprocket is fixed a sort of open storage box on the front. one notes the presence of the nearest spar of the observer, two rings, one on the front and one on the back: without hold they used to tie the dogs.