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Rehabilitating an incline
520
CURRENT TOPICS.
[J. 1:;. I.
is a major problem to the industry and has not been solved satisfactarily as yet. C.
Magnetic Separation of Seeds.-(1. and E. C., Aug. 20, 1936.) The Hungarian correspondent writes of a patent assigned to G. LORAND covering the magnetic separation of the seeds of weeds, especially of plantain from valuable Trifolium seeds. A mixture of 12.5 to 25.0 parts of magnesium chloride or calcium chloride, 50 parts of calcium oxide, and 25.0 to 37.5 parts of iron powder is given to the seeds. The chemical agent is adsorbed on the surface of plantain seeds only and thus they are attracted by the magnets, leaving the Trifolium seeds behind. C. Rehabilitating an Incline.-M. S. GILBERT. (Tralzsit JournaZ,~ Vol. 80, No. 8.) Change after change has taken place in Cincinnati, Ohio, as the various forms of transportation have been modernized during the past 60 years, but the Mt. Adams incline has remained the same until recently. Illustrations show two car structures hauled up and down the side of Mt. Adams by means of cables. They are used to carry street cars. Nearly 2,ooo,ooo passengers a year ride up or down this incline, one of the few of this type still in existence. It is 98 ft. long with a 28.9 per cent. grade. The vertical lift is 261 ft. It has four draft cables each 1,200 ft. long and 1% in. in diameter, consisting of I 14 strands of steel wire wound around a v2 in. hemp cord. In addition to the draft cables there is the I va in. auxiliary or safety cable of the same construction connecting the two cars, acting as a means of balancing load. The cables are made especially for this incline to give both strength and durability, each one having a breaking strain of 67 tons. They are wound around two large drums, 14 ft. in diameter, and are fastened to the two 35 ton cars. The drums are driven by two high pressure Corliss engines, permitting a speed of the cables and hence the two incline cars, one ascending while the other decends on an opposite track, at 6.50 ft. per minute. The complete rehabilitation project included the rebuilding of the incline car trucks, installation of a new safety cable, extensive renewal of timbers in the incline plane trestle and repair of the machinery and boilers in the power plant. Involved in the job, of course, was the problem of not suspending operation for too long a period. R. H. 0.
CURRENT TOPICS.
[J. 1:;. I.
is a major problem to the industry and has not been solved satisfactarily as yet. C.
Magnetic Separation of Seeds.-(1. and E. C., Aug. 20, 1936.) The Hungarian correspondent writes of a patent assigned to G. LORAND covering the magnetic separation of the seeds of weeds, especially of plantain from valuable Trifolium seeds. A mixture of 12.5 to 25.0 parts of magnesium chloride or calcium chloride, 50 parts of calcium oxide, and 25.0 to 37.5 parts of iron powder is given to the seeds. The chemical agent is adsorbed on the surface of plantain seeds only and thus they are attracted by the magnets, leaving the Trifolium seeds behind. C. Rehabilitating an Incline.-M. S. GILBERT. (Tralzsit JournaZ,~ Vol. 80, No. 8.) Change after change has taken place in Cincinnati, Ohio, as the various forms of transportation have been modernized during the past 60 years, but the Mt. Adams incline has remained the same until recently. Illustrations show two car structures hauled up and down the side of Mt. Adams by means of cables. They are used to carry street cars. Nearly 2,ooo,ooo passengers a year ride up or down this incline, one of the few of this type still in existence. It is 98 ft. long with a 28.9 per cent. grade. The vertical lift is 261 ft. It has four draft cables each 1,200 ft. long and 1% in. in diameter, consisting of I 14 strands of steel wire wound around a v2 in. hemp cord. In addition to the draft cables there is the I va in. auxiliary or safety cable of the same construction connecting the two cars, acting as a means of balancing load. The cables are made especially for this incline to give both strength and durability, each one having a breaking strain of 67 tons. They are wound around two large drums, 14 ft. in diameter, and are fastened to the two 35 ton cars. The drums are driven by two high pressure Corliss engines, permitting a speed of the cables and hence the two incline cars, one ascending while the other decends on an opposite track, at 6.50 ft. per minute. The complete rehabilitation project included the rebuilding of the incline car trucks, installation of a new safety cable, extensive renewal of timbers in the incline plane trestle and repair of the machinery and boilers in the power plant. Involved in the job, of course, was the problem of not suspending operation for too long a period. R. H. 0.