CHAPTER IV.
THE TWO-FINGERED MAN.
The bonga, urged along by her two peaked sails, ran alongside the Aztec, a quarter of an hour later. The boys were leaning over the rail looking very natty in neat, white duck suits and Panama hats, and the meeting after Mr. Chester and Blakely had clambered aboard up a hastily thrown Jacob’s Ladder, can be better imagined than described.
The first greetings over and the boys having been introduced to Blakely, the conversation naturally turned to the Golden Eagle. Led by Frank and Harry, Mr. Chester and the overseer proceeded to the fore deck where the crew of the Aztec assigned to that duty were making fast a sling to hoist the first of the blue boxes over into the lighter that lay alongside the steamer.
“You see,” explained Frank to his interested listeners, “that we have taken good care to cage our Golden Eagle securely. I suppose, father, that you would like to hear a few details of its construction. Well, then, ladies and gentlemen,”—adopting a grandiloquent showman’s manner—“the Golden Eagle is a biplane machine—that is to say, that she has a double set of planes one above the other. They have a spread of fifty-six feet by six and are covered with balloon silk of a special quality lacquered over with several coats of a specially prepared fire and water composition.
“She can lift a weight of two hundred pounds in addition to the three passengers she is capable of carrying. I believe that we will be able before long to stay up in the air for a sustained flight of two hundred miles or more. Already we have made a flight of a hundred and fifty miles and with the new twin propellers that we have adjusted I think we can make the longer distance easily.
“Our engine is fifty horsepower of what is known as the opposed type and every bit of it made in an American shop. It ‘turns up’ twelve hundred revolutions a minute. We rarely run it that speed, however. The gasolene and the water for cooling the cylinder jackets are suspended in tanks under the deck-house. A pump circulates the water through the cylinder jackets and into a condenser where it is cooled off and is ready to be forced through the cylinders again. The lubricating oil is fed also by a force system which is much more reliable than the gravity method particularly in an air-ship where there is a tendency to pitch about a lot in the upper air currents.
“The frames upon which the covering of the planes is stretched are formed of an alloy of aluminum and bronze which makes an exceptionally light and strong material for the purpose. We put a few ideas of our own into the Golden Eagle when we built her, among them being an improved bird-like tail which makes her handle very readily even in heavy weather.
“And—Oh, yes, I almost forgot the wireless plant. That is really the most unique feature of our craft. We carry our aerials, as the long receiving wires are called, stretched across the whole length of the upper plane and the receiving and sending apparatus is right handy to the operator’s right hand. We have a double steering wheel fitted tandem, so that anyone sitting behind the operator can handle the rudder while he is busy at the wireless.
“In the pilot-house, as we call it, but it is really more a sort of cockpit in the deck-house, are fitted small watertight mahogany boxes which contain our navigating instruments and we have a brass binnacle boxing in a spirit compass which is lighted at night by the current from a miniature dynamo which also supplies power for a small but powerful searchlight.