The Technical World Magazine, Volume 15Technical World Company, 1911 |
From inside the book
Results 6-10 of 100
Page 57
... four - tracked line , or 132 miles of single track , electrified by what is known as the continuous or direct current system . Now these two roads use the same depot in New York City . Practically all the New England railway service ...
... four - tracked line , or 132 miles of single track , electrified by what is known as the continuous or direct current system . Now these two roads use the same depot in New York City . Practically all the New England railway service ...
Page 60
... four motors , and by the use of electrical re- sistance . There are other practical ob- jections to this system . The motor of the three - phase system is inherently a constant - speed machine . With a light load or a heavy load it runs ...
... four motors , and by the use of electrical re- sistance . There are other practical ob- jections to this system . The motor of the three - phase system is inherently a constant - speed machine . With a light load or a heavy load it runs ...
Page 70
... four derrick points , and a back guy . The next thing was to prepare for the heavy concrete work . Four heavy steel beams each thirty feet in length , were placed on cribbing timbers and bolted together . Scaffolding was then raised ...
... four derrick points , and a back guy . The next thing was to prepare for the heavy concrete work . Four heavy steel beams each thirty feet in length , were placed on cribbing timbers and bolted together . Scaffolding was then raised ...
Page 71
... four hours finds cement in a con- dition to support itself , and a collapsible frame of steel was therefore devised , which could be lifted up in sections as the concrete hardened . The amount of cement used was about three hundred and ...
... four hours finds cement in a con- dition to support itself , and a collapsible frame of steel was therefore devised , which could be lifted up in sections as the concrete hardened . The amount of cement used was about three hundred and ...
Page 74
... four times the height of the Bunker Hill monument ; and yet any one who has toiled up the steps to the top of Bos- ton's proudest landmark will feelingly agree that it is not to be sneezed at . Also , the length of the Olympic and her ...
... four times the height of the Bunker Hill monument ; and yet any one who has toiled up the steps to the top of Bos- ton's proudest landmark will feelingly agree that it is not to be sneezed at . Also , the length of the Olympic and her ...
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