Abstract: A machine for automatically distributing piston rings and spacers into the grooves of a piston is disclosed. The machine comprises magazine tubes onto which stacks of the spacers and rails are threaded. The machine further comprises a widened bore in which the piston is seated as rails or spacers are automatically released from the tubes and threaded into the piston grooves.

Abstract: A method of manufacturing a hollow shaft having internal swellings of revolution is disclosed. Hollow shaft sections, each having at least one internal swelling of revolution, are consecutively formed in a substantially continuous cold extrusion process using a single punch 7. Tubular blank 1a is extruded through narrowed orifice 14 of die 8. Tip 10 of punch 7 is inserted into axial passage 11 of blank 1a and shoulder 13 of punch 7 engages a rear end of blank 1a to push blank 1a partially through narrowed orifice 14 and thereby compress the front end of blank 1a between tip 10 and narrowed orifice 14. Punch 7 is then removed from die 8 and another tubular blank 12 is introduced in die 8 with its front end in abutment with the rear end of deformed blank 1b.

Abstract: This invention relates to an internal combustion engine cooled by water and provided with a Diesel oil heater, wherein the exchanger of the heater is fixed directly to the cylinder head of the engine, the two surfaces in contact being coupled to each other, and this cylinder head comprises, on its face on which the exchanger is applied, orifices which place it in communication with the space in the exchanger through which the water cooling the engine passes.