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alternating current amperes annealing apparatus application armature automatic auxiliary average blast furnace gas blooming mill boiler capacity Carnegie Steel Co cent charge circuit breaker coal coils coke braize combustion commutator Company connected cost crane curve direct current efficiency Elec electric furnace electrically heated engineers equipment F. C. Watson field flywheel frogleg fuel gases gear unit heater hoist horsepower increase induction motor ingots installation insulation iron kilowatt losses machine magnetic manufacturers maximum metal meter method mill drives nace obtained open hearth open hearth furnaces operation pinion plate mill poles power factor preheater pressure producer reactance reduced regulator repairs reversing rolling mill rope safety shaft sheet shows soaking pit speed static condensers steam steel mill steel plant stoker switch synchronous motor temperature tion torque voltage volts welding winding wire
Popular passages
Page 159 - ... shown for bare surfaces. This is due to the fact that air flowing over the surface of the insulation can increase only the rate of heat transfer from surface to air and cannot change the internal resistance to heat flow inherent in the insulation itself. The effect of the air circulation, therefore, is to...
Page 354 - I wish to thank the chairman and members of the committee for the courtesies they may extend to my citizens who are up here today to testify.
Page 221 - ... men. In preparing for the drive the safety director and myself visited every department in the plant to meet and talk with the department superintendent, the safety committee and groups of employes. I was particularly impressed with the very able manner with which one of the department superintendents handled the matter. He was not satisfied with anything less than complete co-operation with the safety director. It was not enough for him to bring the safety committee, the foremen and the gang...
Page 88 - The Egyptians, whose existence as a nation probably dates from the second generation after Noah, and whose civilization is the most ancient of which we have any knowledge, were at an early period familiar with the use and manufacture of iron.
Page 161 - VELOCITIES 10 per cent in the case of 3 in. thick insulation, provided that the insulation is thoroughly sealed so that air can flow only over the surface. If the conditions are such that the air may circulate through cracks and crevices in the insulation, the increases may be far greater than those given above. Therefore, it is essential that insulation be sealed as tightly as possible.
Page 222 - Mrs. Allen has a garden, no doubt." " Only a little patch. She doesn't like gardening much. Her husband always used to do that and all the outdoor work. But she keeps a clean house." " If she should move to the city, what do you suppose Mrs. Allen would think about having to get up at five o'clock in the morning in order to prepare breakfast, dress the children, keep up their clothes for school, travel five miles to work on a trolley, not to get back home before five-thirty or six to do all of the...
Page 300 - Although it is not the purpose of this paper to go into the details of hardware; such considerations cannot be omitted since they will have rapidly increasing influence on simulation as well.
Page 293 - The voltage of 5000 was arrived at only incidentally, due to the specifications for high-potential tests, given in the Standardization Rules of the American Institute of Electrical Engineers, which require a high-potential test voltage twice the rated voltage of the apparatus, except for transformers connected to consumers...
Page 325 - When plugging, ie, throwing from full speed in one direction to full speed in the other, it is desired to have a time delay in the closing of contactor 2ft.
Page viii - of the Prime Movers Committee of the National Electric Light Association...