"We won't bother about the drawing-room," Hetty said gaily. "That can take care of itself for the present. Two fans and a bulrush as somebody says. And the other rooms, so long as they are light, won't matter. But the dining-room must be quite the thing. Oh, if you could only afford to get the lovely oak we saw at Capper's! We must think of you alone, just at first, Gordon."
I saw that I must take advantage of his changed mood and his curiosity, and I hastened to reply:A learner who goes from gearing and shafts to steam and hydraulics, from machine tools to cranes and hoisting machinery, will not accomplish much. The best way is to select at first an easy subject, one that admits of a great range of modification, and if possible, one that has not assumed a standard form of construction. Bearings and supports for shafts and spindles, [158] is a good subject to begin with.
Director
Balmayne hastened to the door. He might want some ready lie; on the other hand, his diplomacy might be needed. But he set his teeth a trifle closer as he saw Dr. Bruce standing there. "I have been called," he said.Machine motion is mainly rotary; and as rotary motion is accomplished by cylindrical parts such as shafts, bearings, pulleys and wheels, we find that the greater share of machine tools are directed to preparing cylindrical forms. If we note the area of the turned, bored and drilled surface in ordinary machinery, and compare with the amount of planed surface, we will find the former not less than as two to one in the finer class of machinery, and as three to one in the coarser class; from this may be estimated approximately the proportion of tools required for operating on cylindrical surfaces and plane surfaces; assuming the cutting tools to have the same capacity in the two cases, the proportion will be as three to one. This difference between the number of machines required for cylindrical and plane surfaces is farther increased, when we consider that tools act continually on cylindrical surfaces and intermittently on plane surfaces."Here is the latchkey," he said. "There are several of them. There is no caretaker in the place as yet. Go in, you have no further need of me."