Hathorn Davey triple expansion engine
Triple expansion engines use three expansion stages. The engines use a series of double-acting cylinders of progressively increasing diameter. These cylinders are…

The sound of turning on a lathe.
A Ryazan RT 317, with a length of 8000mm, a max turning diameter of 1350mm, a maximum table loading of 10t, with a shifting manipulator capable of handling 15 tons. Manufactured in 2005.
Universal lathes are mainly suitable for individual piece production, or small batch production, for use in maintenance. It is a very versatile machine.
Turning is the removal of metal from the outer diameter of a rotating cylindrical piece. According to the axis of a piece being worked, turning can be either longitudinal or plane, and based on the machined surface it can be either internal or external.
Metal Ravne is the legal successor to Železarna Ravne. The company's range includes a steel plant programme, which starts the production of all their rolled and forged products. Due to technological modernisation over recent years, the company has all the most important machinery for the production of high-quality steel, including a 45t UHP electric arc furnace, a vacuum ladle furnace and a state-of-the-art ‘teeming pit’ for high-class conventional ingots. Their range of products includes ingots, billets with rounded edges and wide flats, with round, flat and square sections, forged bars, machined forgings, discs, bushes, etc.
Sound recordist: Boštjan Troha
Photographer: Veronika Štampfl
Video recordist: Barbara Grilc
Triple expansion engines use three expansion stages. The engines use a series of double-acting cylinders of progressively increasing diameter. These cylinders are…
The electric link bending machine made in 1939 by the manufacturer Malmedie & Co., produces single chain links. First, a wire is…
Goldsmith saws extra piece away that was left because of molding. Blade is sized 3/0. Sawframe is adjustable allowing the use of…
This is the sound of a machine that is connected to a large metal tube; the raw material that is heated and…