. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. e d driven by compressed air contained in the cylindrical tank i; m, twoscrew propellers driven in opposite directions by reversing bevel gears tokeep the torpedo from turning over ; h, shaft ; g, /, steering-apparatusconnections from electric steering gear, a, b, c;
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. e d driven by compressed air contained in the cylindrical tank i; m, twoscrew propellers driven in opposite directions by reversing bevel gears tokeep the torpedo from turning over ; h, shaft ; g, /, steering-apparatusconnections from electric steering gear, a, b, c; k, fuse ; /, explosivecharge ; n, rudder. 505. THE HOLLAND SUBMARINE BOAT. A, torpedo tubefor rear discharge ; B, dynamo ; C, gasoline engine ; D, air compressor;. E, storage battery; F, oil and water tanks; G, compressed air cham-bers ; H, gun-cotton shell in the aerial torpedo gun; J, magazine; K,Whitehead torpedo and tube ; L, trimming tank, oil and gasoHne tank atH under the bow. In the Holland submarine boat the gasoline engine and the dynamoare directly connected to the propeller shaft, so that when the boat isrunning on the surface the gasoHne engine is used for power, and whensubmerged the dynamo alone is in use with current from the storage bat-teries. The air compressor charges the long air tubes, G, G, to a highpressure before going into action, which is discharged in jets whenneeded for ventilation and cooling the interior of the boat, and also fordischarging the aerial and submerged torpedoes. 200 NAVIGATION, VESSELS, MARINE APPLIANCES, ETC. 506. REVERSING CLUTCH for a launch. C is the propellershaft ; D, the engine shaft ; A, H, shell keyed to the propeller shaft, with an inside spurgear to match thering of pinions J ;L, anchor kne
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