20th February 1923, Page 30
20th February 1923
Page 30

Page 30, 20th February 1923
Close
A Rotary Sleeve Valve And Gear.
A Résumé of Recently Published Patents. S PECIFICATION No. 191,216, by H. IL Heaton, is devoted to a description of a rotary sleeve-valve gear. The valve is disposed inside the......