Page:The Steam Turbine.djvu/25

 improved as a result of experiments and some of these are shown on page 10. Curved blades with thickened backs were introduced. The blades were cut off to length from brass, hard rolled and drawn to the required section, and inserted into a groove with distance pieces between and caulked up tightly.

Figs. 18 and 19. Formers for making Segments of Blades.

Dummy labyrinth packings of various types were introduced. Two of these are illustrated in Figs. 16 and 17 on page 10. The design was improved, generally, so as to reduce steam leakages and to provide for greater ratios of expansion.