leakage. It should not bo liable to stick in its F, are sc abrupt that they do not stick, and their movement seat, however unfrequently employed. It should be readily in opening the valve is easily accomplished. and easily repaired, while at the same time it should be so Fig.é A doublegatevalve… … the spring shall act on the banking pins and yield to the steam, during two years, and that they have proved so satis- second blow of the ruby pin. The valve illustrated in the accompanying engravings, factory that henceforth no others will be used in those mills “Our engraving shows a plan of the…
Internet Archive · Public domain (published before 1931). Free to use for anything.
