The device of the samovar
Acted as a console - a design fixed by one side and very vulnerable due to its low rigidity. In 1825, professor of medicine Efrem Mukhin proposed a new version in a samovar store, in order to receive, together with boiling water, the water vapor necessary for field hospitals.
In the upper part of the samovar, bread was baked for the wounded in the manner of the present miracle stoves. It was envisaged to connect the pipe and the body at the top, which gave the samovar construction additional rigidity. However, due to the periodic temperature change, the upper connection of the body with the tube quickly decayed, and the vapor evaporated.
Russian samovarschiki have given thin-walled body additional rigidity, using so-called reliefs - longitudinal and ring dents perceived as ornaments.
In our time, such reliefs are widely used to strengthen thin-walled aviation components.
The samovar body is equipped with handles for carrying. They stand a considerable load - the weight of a samovar filled with water. This load on a small area, which takes the handle, can crumple, push, finally, break through the samovar body. To prevent this from happening, the pens are put together with linings and lining - a kind of rafts that disperse the load along the body, as on a smooth water surface.
Handles on samovars, as well as porcelain and faience teapots, cups are usually fastened at the top of the lining. In this case, the thin wall of the samovar or teapot, while avoiding the effect of the compression, which is dangerous for it, perceives only the stretching.
Finally, a samovar tap, which consists of a tube with a bushing and a rod with a handle. The crane has a constructive cunning: its parts are self-sealing for a long time. The fact is that the rod and bushing are aligned obliquely on the cone. When cornering, the rod surface wears out, a gap appears between it and the socket. But the valve does not lose its tightness, because the rod under its own weight moves down, thus eliminating the gap. Speaking more scientifically, the necessary contact pressure of conical surfaces is created.
However, the rod wears out unevenly and most rapidly near the ends. Here there are gusset-grooves, by which, by the way, collectors determine how long they used the samovar, what is its age and value. Along with the girdle-groove at the edges of the rod and bushing formed a ledge, which, not allowing the rod to lower, stops self-sealing.
Such uneven wear is experienced by widely-spread in machine building joints of conical parts with different rigidity, a shop of samovars. This in due time drew attention to the famous scientist and designer PI Orlov.