... preservative must displace or compress the air in the wood. After the retort is filled, additional preservative is forced into the cylinder by means of pressure pumps, the pressure being gradually raised to and maintained at 125 to 175 Ib. Report ... - Page 1by National Committee on Wood Utilization (U.S.) - 1929Full view - About this book
| International Railway Congress Association - 1923 - 1262 pages
...raised to and maintained at 125 to 180 Ib. per square inch, until the required amount of preservative has been forced into the wood. The pressure is then...released, the preservative drawn from the cylinder, and, as a rule, another vacuum is drawn, the object of this final vacuum being to remove the surplus preservative... | |
| American Society of Mechanical Engineers - 1921 - 1200 pages
...gradually raised to and maintained at 125 to 180 lb. per sq. in. until the required amount of preservative has been forced into the wood. The pressure is then...released, the preservative drawn from the cylinder, and as a rule, another vacuum is drawn, the object of this final vacuum being to remove the surplus preservative... | |
| American Society of Mechanical Engineers - 1921 - 1840 pages
...gradually raised to and maintained at 125 to 180 lb. per sq. in. until the required amount of preservative has been forced into the wood. The pressure is then...released, the preservative drawn from the cylinder, and as a rule, another vacuum is drawn, the object of this final vacuum being to remove the surplus preservative... | |
| 1922 - 338 pages
...maintained at, 125 to 17" pounds per square inch at a temperature of about i So to 200 degrees Fahrenheit until the required amount of creosote has been forced into the wood. The pressure is then released and the preservative drawn from the cylinder. tection from marine borers, however, the oil is not spared... | |
| National Electric Light Association - 1922 - 646 pages
...raised to and maintained at 125 to 175 Ib. per square inch at a temperature of about 180 to 200° Fahr. until the required amount of creosote has been forced...released, the preservative drawn from the cylinder and, as a rule, another vacuum is drawn. The object of this final vacuum is to remove the surplus creosote... | |
| National Electric Light Association. Convention - 1922 - 646 pages
...raised to and maintained at 125 to 175 Ib. per square inch at a temperature of about 180 to 200° Fahr, until the required amount of creosote has been forced...released, the preservative drawn from the cylinder and, as a rule, another vacuum is drawn. The object of this final vacuum is to remove the surplus creosote... | |
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