Fetu-Defize
Société Anonyme des établissements Fetu-Defize of Quai de Longdoz, Liège, Belgium
Makers of machine tools and internal combustion engines.
1889 Exhibited a number of machine tools at the 1889 Paris Exposition.
1894 Displayed 23 machines at the Antwerp Exhibition. These included lathes of various sizes, slotting, planing, and shaping machines, saws for cutting metal, gear-cutting lathes, &c.[1][2]
1930 Description of an interesting planing machine for machining the interior of ingot moulds, shown at the Liège Exhibition. 'It has been observed that the inner surfaces of ingot moulds deteriorate, in varying degrees, due in large measure to the way in which they are arranged side by side in the casting pit. Two sides of an ingot mould are generally quite close to adjoining ones, and therefore do not cool quickly as the more exposed sides, while, in pouring, the stream of metal is apt to impinge upon the same side time after time, due to the same arrangement. The result is that pockets and fissures soon appear in the surface and lead to difficulties in stripping, to say nothing of interfering with the homogeneity of the ingot. Hitherto these pockets have been filled in with refractory material in the endeavour to obtain a smooth ingot, a proceeding which sometimes leads to trouble by the filling becoming detached and included in the poured metal. Mr. Henry, the chief engineer at Messrs. Ougree-Marihaye’s steel works at Rodange, has given close attention to the problem and has shown conclusively that, in general, it pays to machine the interior of ingot moulds as soon as they show any signs of scoring. The quality of the product is thereby improved and the lif eof the mould greatly prolonged, the latter advantage necessarily implying that a smaller stock of moulds can be carried than would otherwise be the case. The design of a suitable machine for this purpose is due to this engineer. The problem of machining the moulds, which are, of course, tapered from top to bottom and have, very often, also curved sides — has been attacked in two ways, viz., the first, by a machine having some resemblance to a lathe ; the second, by the machine exhibited, which is based on the shaper or planing principle, that is, having a cutting stroke in an axial direction, which is also the direction of stripping. ....'[3]
1930 Description of grinding machine for finishing plate rolls[4]