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June, 1909 By referring to the accompanying illustration the simplicity and practi- cal construction of the apparatus is apparent. A steel diaphragm or disc is supported around its periphery and hias affixed ito its center a small hard- ened steel piece. A small steel toothed wheel revolves at the tback of the diaphragm and.is so arranged that the teeth come in contact with the hard- ened steel piece. As the wheel re- volves, deriving its power from a few dry cells, the ignition battery of an engine or other source, "ithe _ dia- phragm is vibrated, producing a sound of extreme harshness antl penetration. 'The apparatus is so designed that the sound: is projected in one direction, the whole being mounted on a swivel bracket capable of rotation so as 'to take in an entire circle. ' This marine warning signal can be installed on any ttype.of craft, can bé attached to a convenient bulkhead, the deck, or mounted on top of the cabin or pilot house, in which latter case 'rotation is accomplished by a handle projecting through the roof, as with a search light, and is water. proof. The inventor is Miller Reese Hutchinson, of New York, who 'has named his apparatus the Klaxon Warning Signal. | ELECTRIC DOCK CAPSTANS AND WINCHES. The convenience of electric motive 'power is well illustrated vin the ap- plications shown in the accompany- ing views where electric motors are shown connected to a capstan and winch for use in hauling vessels up to the dock. In each case the outfit Big, is entirely self contained with the entire' outfit on a single bedplate, which insures correct alignment of the gearing even after long service. This construction makes the installa- tion of the outfit a simple matter as it is only necessary to bolt the bedplate to a secure foundation and connect the motor to the power cir- cuits. The location of the capstan "THE. Marine. REVIEW iG. 2. may be chosen without reference to the power for the wires may be run anywhere on the dock with much greater 'convenience at a_ substan- tial saving as compared to any other method of supplying power. Fig. 1 shows one of the two elec- tric capstans gupplied by the Ameri- can Ship Windlass Co., of Providence, R. I., to the Newport News Ship- building & Drydock Co., which they in- stalled on piers in their ship yard at, Newport News, Va. With a. capstan. on, Cach..pier, at the entrance of the drydock it is possible to haul the ships in very rapidly and accurately. The dock 1s one of the largest at any of the ship- yards in the world and will take the largest American battleships afloat. It may readily be appreciated that pow- erful machines are required to do such work. Each winch is designed to pull 11,000 pounds at 30 ft. per minute, The motors are standard Westinghouse type "K" series wound motors running at a full load speed of 560 revolutions per minute. The speed is controlled by a standard - Westinghouse R-27 controller. The capstan is known as a 16-inch electric gypsy, that is, the barrel is 16 inches in diameter at the smallest part. The hauling rope is merely wound around the barrel four or five times and the loose end of the rope overhauled as the vessel is. pulled into. the dock by the winches, Fig. 2 'shows. 4 powerful winch which was installed bythe Inter- boro Rapid Transit Co., of New York city, to haul barges alongside of the dock at their power station. It 48 driven by» a 25-horsepower, three- phase induction motor of Westing- house manufacture. With the motor running at 240 revolutions per min- ute the winch will have a speed of 24 ft. per minute and exert a pull of 18,000 pounds. It will be noted that in the first case at Newport News series wound 175 direct current motors are used and in the second case at New' York a 3- phase induction motor of the short circuited secondary type is used. In each case the conditions are practical- ly the same and the different types of motors are giving satisfactory ser- vice. All of the winches were furnished by: the American Ship Windlass Co., of Providence, ROL NEPTUNE SOUNDING MACHINE. THe Marine Review in its April: issue gave a description of the Nep- tune sounding machine which the Up- son-Walton Co., Cleveland, are install- QUuTRIGGER AT (Rest: ing on about 50 lake freighters this year. Herewith are given illustrations showing how an outrigger may be fitted forward at little expense to han- dle the machine with best results. OUTRIGGER IN USE, With the outrigger the machine is handiest to the captain and puts him oh. in control of it at all times.. ' A FLEXIBLE SHAFT SANDER A flexible shaft sander recently placed on the market by the Coates Clipper Mfg. Co. has met with great success, especially in the manufac- ture of small water craft, being par- ticularly adapted for sanding the curv- ing bottoms of boats and canoes. This sander, shown in the illustra-~ tion, has been adopted by the Seth Thomas Clock 'Co. for obtaining the proper polish desired on the high