Page:Popular Science Monthly Volume 91.djvu/733

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��(jlj, 1 Underwood and Underwood

The man in the foreground is setting the firing-pin. Those working at the tail of the torpedo are adjusting the powerful little air turbine prior to mounting the gyroscope in place

��Assembling a Torpedo — It Requires Almost Every Type of Workman

A TORPEDO which will soon find its way into the hold of a United States warrior of the sea is interestingly depicted in the photograph on this page. The pro- pelling machinery, the compressed-air valves and the firing mechanism have just arrived from the factories. These parts are being assembled in the torpedo on a naval barge "somewhere" along our coast.

Note the men working at the tail of the torpedo. In the small space but twenty inches in diameter they have placed the powerful little air turbine which will drive the twenty-five-hundred-pound projectile at a speed of forty-five miles an hour! They are adjusting this turbine, prior to mounting the gyroscope in place at the very end of the tail.

The compressed-air tank is already in its place in the center of the three compart- ments of the torpedo. The tank will hold air under the enormous pres- sure of two and a quarter tons per square inch. No wonder this air can propel the tor- pedo at such great speed when fed into the turbine.

There is little time lost in the as-

��sembling after the interior "fine work" is done. One man does not perform his task and make way for the next. As is seen in the photograph above, while the man in the foreground is setting in the firing -pin mechanism, the finishers and adjusters are busy on the other portions and the painter is polishing off the nose.

��A Self-Filling Pipe— It Works Like a Self-Feeding Stove

IF you are tired of filling that pipe of yours so often you may be glad to know that a self-filling pipe has been invented. James H. Hoefler, of Kentucky, has devised a pipe which has a tobacco magazine and which fills itself without troubling the smoker.

The great difficulty in making magazine pipes is to prevent the tobacco from clog- ging. This Mr. Hoefler has prevented by a clever arrangement of the mag- CoMapsible azine in telescopic sections,

��tobacco tube

���Removable stopper^'

��The self-feeding magazine attachment for a pipe. It makes a "smoke" an all-day affair

��each section holding its own tobacco. All sections are collaps- ible. The magazine may be attached to any pipe. So, on a fishing trip, for in- stance, all you need do is to fill the maga- zine and you can smoke all day long.

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