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The pistons were fixed to a bed-plate and pointed upwards, so that the pump was, as it were, turned upside down, a position which, among other advantages, allowed of the plungers being covered with water, through which the air was forced and partially cooled.
He pressed his big hands down over the place where the bolts had broken off, and by main strength of muscle he held the bed-plate in place until the power was shut off. "Koku, my boy, you did a great thing!" cried Tom, when he realized what had happened. "You saved all our lives, and the airship as well." "Koku glad," was the simple reply of the giant. "But, bless my witch hazel!" cried Mr. Damon.
On one side of the partition, the tub is raised in a half-circle, close to which revolves an iron roll about three or four feet in diameter, and covered with knives; in the bottom of the tub, and directly under the revolving roll, is another set of knives called a "bed-plate," which is stationary, and against which the roll can be lowered. But let us not anticipate.
The knives on the roll in the beater are grouped three together instead of two, and are placed nearer the bottom or bed-plate in order to separate more thoroughly the fibers. In the beater are performed many and varying manipulations, designed not only to secure a more perfect product but also to produce different varieties of paper.
As the water clears, the roll is lowered closer and closer to the bottom of the bed-plate, in order to open up the fibers more thoroughly for the free circulation of the water among them.
These engines are mounted on a bed-plate which may be set on any floor without especial preparation therefor. The parts are all made interchangeable. A permanent indicator is provided which shows the exact point of cut-off. The steam-port is exceptionally large, being one-fourth of the piston area. Reciprocating motion is entirely done away with.
At first glance it appeared to be merely a dome of heavy steel, bolted to a massive bed-plate, but I didn't spend much time examining the thing. "There, Griggs," began Hawkins, triumphantly, "in that small " "Hawkins," I cried, desperately, "you get out of that boat! Get out of it, I say! Come home with me at once. I'm not going to be mixed up in any more of your wretched trial-trips.
As the giant arose from his kneeling position the cause of the accident could easily be seen. Two of the big belts that held down one end of the pump bed-plate to the floor of the airship, had cracked off, probably through some defect, or because of the long and constant vibration on them. This caused a great strain on the two forward bolts, and the pump starter! to tear itself loose.
It had taken Plank only a few minutes to perceive that something had occurred to change a point of view which he had believed it impossible for Quarrier to change. Something had gone wrong in his own careful calculations; some cog had slipped, some rivet given way, some bed-plate cracked. And Harrington evidently had not been aware of it; but Quarrier knew it. There was something wrong.
Remove the standards, drill and tap the bed-plate holes, and replace parts as before, taking care that the lubricating holes in the bearings point vertically upwards. Then solder bearings to standards. If any difficulty is experienced in getting all four standards to bed properly, make the bearing holes in the two inner ones a rather easy fit.
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