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Portable machine for testing bricks
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CURRENT TOPICS.
[J. F. I.
Gas Company Management to be Taught by Mail by Columbia University.uThe teaching of gas company operations through the mails is the aim of a new correspondence course, sponsored, by Columbia University and the American Gas Association, which will be given this year under the direction of Prof. Jerome J. Morgan, of the Columbia faculty. The establishment of this course is the direct result of the increased interest in the manufactured gas business which has taken place during recent years following the application of gas fuel to house heating and to large industrial heating processes. A considerable number of educational institutions have added courses in gas technology to their curricula, Professor Morgan having conducted such a course at Columbia for the past four years. However, it was realized by the Gas Association that many men employed by gas utilities who would largely benefit from classroom work were excluded by lack of time and geographical location. R. Commercial Air Routes. (,Machinery, Aug., 1925, p. 943.)-The extent to which commercial aviation has been carried in Europe will be appreciated when it is mentioned that a total of I3,55o miles of regular air routes are in operation, of which 54oo miles are covered by one company operating a great number of regular services in Central Europe. As examples of the service provided, it may be mentioned that the distance from Christiania in Norway to Dresden in Germany is covered in eight and one-half hours, as compared with about twenty-eight hours by rail and water. From Malmo in Sweden to London, via Hamburg and Amsterdam, the air service requires eight and one-quarter hours. This was formerly a 36-hour journey. The distance from Berlin to Stockholm is covered in seven and one-half hours, as compared with twenty-three hours formerly. In 1924 the Junkers' Airplanes, a German corporation operating routes extending over 13oo miles, carried more than 4o,ooo passengers and 315,ooo pound,s of mail. R.
Portable Machine for Testing Bricks. (Technical News Bulletin, Bureau of Standards, June, 1925, No. 9 8 . ) u A portable machine for testing bricks in cross-bend has been designed by Dr. A. H. Stang. of the engineering mechanics section of the bureau, and construction is practically completed. The machine will weigh about 40 pounds. It is hydraulically operated, 16 inches high, 6 inches wide, and 12 inches long. On account of the proposed change in the A. S. T. M. specifications for brick testing, which will probably eliminate all physical tests except the cross-bend test, the need for such a machine is evident. With this machine an inspector can test bricks on the job and will not nee4 to send specimens to a distant testing laboratory. Delays will thus be avoided and a real indication given of the quality of the brick.
CURRENT TOPICS.
[J. F. I.
Gas Company Management to be Taught by Mail by Columbia University.uThe teaching of gas company operations through the mails is the aim of a new correspondence course, sponsored, by Columbia University and the American Gas Association, which will be given this year under the direction of Prof. Jerome J. Morgan, of the Columbia faculty. The establishment of this course is the direct result of the increased interest in the manufactured gas business which has taken place during recent years following the application of gas fuel to house heating and to large industrial heating processes. A considerable number of educational institutions have added courses in gas technology to their curricula, Professor Morgan having conducted such a course at Columbia for the past four years. However, it was realized by the Gas Association that many men employed by gas utilities who would largely benefit from classroom work were excluded by lack of time and geographical location. R. Commercial Air Routes. (,Machinery, Aug., 1925, p. 943.)-The extent to which commercial aviation has been carried in Europe will be appreciated when it is mentioned that a total of I3,55o miles of regular air routes are in operation, of which 54oo miles are covered by one company operating a great number of regular services in Central Europe. As examples of the service provided, it may be mentioned that the distance from Christiania in Norway to Dresden in Germany is covered in eight and one-half hours, as compared with about twenty-eight hours by rail and water. From Malmo in Sweden to London, via Hamburg and Amsterdam, the air service requires eight and one-quarter hours. This was formerly a 36-hour journey. The distance from Berlin to Stockholm is covered in seven and one-half hours, as compared with twenty-three hours formerly. In 1924 the Junkers' Airplanes, a German corporation operating routes extending over 13oo miles, carried more than 4o,ooo passengers and 315,ooo pound,s of mail. R.
Portable Machine for Testing Bricks. (Technical News Bulletin, Bureau of Standards, June, 1925, No. 9 8 . ) u A portable machine for testing bricks in cross-bend has been designed by Dr. A. H. Stang. of the engineering mechanics section of the bureau, and construction is practically completed. The machine will weigh about 40 pounds. It is hydraulically operated, 16 inches high, 6 inches wide, and 12 inches long. On account of the proposed change in the A. S. T. M. specifications for brick testing, which will probably eliminate all physical tests except the cross-bend test, the need for such a machine is evident. With this machine an inspector can test bricks on the job and will not nee4 to send specimens to a distant testing laboratory. Delays will thus be avoided and a real indication given of the quality of the brick.