IMPROVEMENTS IN STEAM ENGINES

PERFECTIONNEMENTS DANS LES MACHINES A VAPEUR

Claims

Claim lst. In a steam engine having a reciprocating piston-rod, a pin sliding in a guide attached to or forming part of said rod, the said rod in combination with two spiral guides formed on the periphery of a cylindrical block fixed to a forming part of the main engine-shaft, the said guides being inversely formed upon the cylinder, the ends of the one meeting the ends of the other, so that the pin moving - with the piston-rod, and following the channel of one guide shall, upon reaching the end of the stroke and commencing to travel on the return-stroke, be directed to the depressed part of the other guide, thereby, imparting to the grooved cylinder a rotary movement in the same direction, derived by it from the contrary movement of the piston-rod, and thereby the reciprocating movement of the piston-rod imparts the required rotary motion to the main shaft, substantially as described. 2nd. The combination, with a cylinder, reciprocating piston, and its rod and cross-head, of a shaft D arranged parallel with the piston-rod, a cylinder G secured upon said shaft, having two spiral grooves H set inversely to each other, the end of one groove being deeper than the contiguous end of the opposite groove, and a spring J attached to said cross-head and adapted to rise up the incline at the and of one groove, and drop into the recess at the beginning of the other, substantially as and for the purpose specified.