Ontario Sessional Papers, 1920, . --five varnishes and several hundred analysesof all classes of materials such as rubber, coke, steel and other metals, cement clays,rock, etc., were made during the year. For the convenience of the Stores Depart-ment the Laboratory has been frosting, as needed, small lots of lamps. Approxi-mately 3,000 lamps of all sizes have thus been treated in the last twelve months. Some interesting investigations have been undertaken and completed. Methods. Testing Machine Room—structural Materials Laboratory. of reclaiming used lubricating oils have been studied
Ontario Sessional Papers, 1920, . --five varnishes and several hundred analysesof all classes of materials such as rubber, coke, steel and other metals, cement clays,rock, etc., were made during the year. For the convenience of the Stores Depart-ment the Laboratory has been frosting, as needed, small lots of lamps. Approxi-mately 3,000 lamps of all sizes have thus been treated in the last twelve months. Some interesting investigations have been undertaken and completed. Methods. Testing Machine Room—structural Materials Laboratory. of reclaiming used lubricating oils have been studied and the results have beenvery encouraging. An important series of tests has been made upon paints tofind one capable of withstanding the very severe service conditions encounteredat several points on our system. As a result a number of promising paints havebeen found which are now being given a trv out under service conditions. Structural Materials Laboratory The character of the work, handled by this Laboratory has undergone littlechange during the past year and will not be again described. The volume of workhas almost doubled, necessitating both increased staff and additional equipment. Several of these additions to the equipment are of sufficient importance towarrant special mention. A 100,000-pound capacity motor-driven and a 20,000-pound capacity- hand-driven Olsen screw testing machine have been installed. 282 TWELFTH ANNUAL REPORT OF THE No. 49 These machines arc capabl
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Keywords: ., bookauthorontariol, bookcentury1900, bookdecade1920, bookyear1920
