Mechanical applicances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's ... "Mechanical mvements, powers and devices"

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...is mounted in a frame on a floating buoy. A radial grooved iron plate is made fast to the frame under the bell and close to it, on which is laid a free cannon ball. As the buoy rolls on the sea, this ball rolls on the plate, striking some side of the bell. In this design a very small roll of the sea makes a constant ringing of the bell. 522. THE WHISTLING BUOY. The hanging tube below the float is open at the bottom. In the vertical motion of the float and tube by the waves, the water in the tube reacts as a piston, drawing in air at the top of the buoy and compressing it to blow the whistle. 53. LIGHTING BUOY. Compressed gas is charged into the body of the buoy at from 160 to 200 pounds per square inch. A regulator delivers the gas to the burner at a uniform pressure. A single charge will burn for several days. The inverted cone under the lamp protects it from the splash of the waves. Good for har:=.= bors and channels. 524. FOG WHISTLE. A signal of warning operated by wave motion. A sounder on the principle of the steam whistle is exposed to a blast of air, according to the facilities of operation. Usually, motion derived from the waves, the tide, the wind, or clockwork, makes it automatic. In the example, the semicircular tubular vessel is mounted upon a rock shaft, and has at each extremity an ordinary whistle and a valve opening inward. When the vessel is partially filled with water and rocked to and fro, the air is forced through the whistle and sounds an alarm. 525. FISH WAY. A device to enable fish to ascend falls or dams. It may consist of a series of stepped basins over which the water descends, turning a fall into a cascade, and sometimes known as a fish ladder; or it may consist of a 3 chute with a sinuous track for diminishing the velocity and a...