Improvements in Turbine Engines

27,733. Bromhead, S. S., [Ingham, C. R.]. Dec. 16. Steam turbines.-In a multiple-expansion steam turbine, a rotatable centre A is formed with two or more series of peripheral buckets A', A , A , a , a , a , which increase in size from the centre outwards, and have radial faces upon which the steam impinges. Steam is admitted to the groove s which communicates with the pockets E', e in the fixed casing B by means of spiral branches s , s , or the branches may be supplied directly with steam. From the pocket E the steam passes through inlet ports I' in the port cylinder R to. the buckets A , and is exhausted through ports D' to the pocket E which communicates by ports I with the buckets A . Discharge ports D communicate with the pocket E , and ports I convey the steam to the buckets A , which exhaust through ports in the cylinder R to the chamber D . The buckets a', a', a are similarly supplied and exhausted. The casing B is preferably made in sections B', B', B , b , b , 63, and partitions C , C , C , C , c , c , c , rigidly secured together. The inlet and discharge ports are alternately opened and closed as the centre rotates.