The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

MARINE REVIEW. | ae LS McDougall's Rudder. C pt. 17, 1891, Capt. McDougall filed an application in Wash. 1 for a patent on a rudder similar to that shown by the accompanying engraving. His principal claim was that the rudder he proposed could be manufactured more economically and would be lighter and stronger than rudders now in use. It will be seen that the frame of the rudder here shown has no longitudinal or cross ribs, but the inventor claimed that by mak- ing the wooden interior continuous more strength would: be gained than by using the longitudinal or cross ribs, provided of course that there was an outside metalic covering to the wood on both sides, as in the case of nearly all rudders now made for big vessels and known as iron rudders. _ For a better comprehension of the accompanying sketches it may be noted that Fig: 1 isan elevation partly in section of a ) 12 oC balanced rudder made in accordance with the proposed plan of construction, aud Fig. 2 isa sectional view of the same, A is the frame and B the stock, which does not extend through the frame to the pintle C, as is the case with the common form of rudder. D D are the planks, which are preferably arranged in a vertical position, and should make in the best form a concave surface when of gradual thickness from each side to the center, as shown in Fig. 2. EE is the metal covering on each side of the planks and which is secured in place by means of rivets or bolts, a a passing through the edges of each covering or plate and through the outside frame. In order to further strengthen the rudder, additional bolts or rivets 6 6 may be extended through both coverings or plates and through the planks. When in use, the interior planks will swell, it is claimed, under the action of the water so as to fit very tightly within the frame and between the coverings or plates. eusaist From these specifications it can not be seen that there is any particular difference in this rudder and the ordinary iron rudder of the balanced kind now in use on the lakes, excepting the ab- sence of the rudder post extending vertically through the frame, which would seem to be a very weak feature. The rudder of the Wetmore, which was destroyed on her first trip up the Pa- cific coast, is understood to have been of this form. It went to pieces, and the theory of its destruction held by Capt. McDou- gall is that the salt water ate through the rivet holes, caused the wood to expand, and forced the plates past the rivet heads. Thus gradually and piece by piece the rudder plates were lost in the ocean, until the Wetmore became helpless. He now proposes to use heavier rivets and not countersink but flatten them, Personal Mention. Capt. James Millen, of Parker & Millen, Detroit, spent Tuesday in Cleveland. Capt. Rardon, of the firm of Macdonald & Co., Chicago underwriters, was in Cleveland during the week. He is on a business trip around the lakes. Capt. John W. Jones, who came to the lakes fifty-three years ago and was engaged in building and sailing vessels up to a few years ago, died at Racine, Friday, in his seventy-fifth year. Homer J. Carr, of Chicago, manager of the Lake Marine News Association, is making a trip around the lakes preparatory to beginning the regular telegraphic service for the daily news- papers. Capt. M. M. Drake and Capt. John Green, of Buffalo, have again taken up business, the latter returning from a winter's sojourn in California, and the former from a trip of a few weeks in the south. A telegram from West Bay City announces the death of A. K. Moseley, chief draughtsman for F. W. Wheeler & Co. Mr. Moseley was a valuable man in the Wheeler works, and an estimable gentleman. Capt. W. C. Brown, who was in the Cleveland-Cliffs Mining Company's steamer Cadillac, will look after the construction of the steel steamer Centurion at Wheeler's yard for the Hopkins Steamship Company, and will command her when she is ready -- for service, Capt. Brown owns some stock in this company. James A. King succeeds his father, the late Zenas King, to the presidency of the King Bridge Company, and H. W. King has been elected vice-president of the company with H. B. Gibbs as secretarv. We are informed by this company that there is no truth in the rumor that the ore conveying machinery to be erected by them at Conneaut will be operated by electricity. Egbert P. Watson, editor and proprietor of the Engineer of New York, has sold an interest in his paper to H. W. Harris, formerly business manager of the Electrical World. The En- gineer is one of the few technical journals in this country that give evidence of having a subscription patronage that is very valuable, irrespective of the extent of subscriptions. Mr. Wat- son's management of its editorial department is peculiar, and on some subjects rather violent but nevertheless interesting. Notwithstanding this oddity, the Engineer is a valuable news- paper property and can undoubtedly be made more valuable through the assistance of a good business manager. A Mile in About Two Minutes. McBride Bros. of Philadelphia, owners of the steam yacht Yankee Doodle, which covered a measured mile in July last in 2 minutes 12 seconds, sends us the accompanying engraving of the boat. The MARINE REVIEW, issue of March 23, contained illustrations of the engines of the U. S. S. Powhatan, built in 1849, and the torpedo boat No. 2, built in 1891, and as an indi- cation of the great advancement made in marine engineering during the period intervening, it was shown that, while the en- gines of the boat built in 1849 weighed 973 pounds per horse power, the machinery of the modern topedo boat weighed only "e ao Es GF on) FA ae 55 pounds per horse power. 'he owners of the Yankee Doodle claim that their little boat makes a showing even better than this, which is due to the very light weight and great steaming qualities of a pipe boiler, of which McBride & Fisher of Phila- delphia are the patentees. : The total weight of the Yankee Doodle's machinery includ- ing boiler, engine, propeller, shaft, pumps, etc., is 3,200 pounds She has two 8 by 8-inch upright engines which turn 550 revo- lutions per minute. 'The boilers have 8 feet of grate surface and 300 feet of heating surface,