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MARINE REVIEW. | Illustrated Patent Record. SELECTED ABSTRACTS OF SPECIFICATIONS OF A MARINE NATURE--FROM LATEST PATENT OFFICE REPORTS. 517,999. OAR. Arthur H. Burns, Pen Yan, N.Y. Filed Oct. 21,1893. Serial No. 488,.. 787. (No model.) Claim.--In a bow facing oar apparatus, the combination of a boat hav- ing a row lock journal and a pin-hole alongside, a swiveling row-lock, pintle provided with a horizontally extending bracket secured to the side of the pintle having a pin-hole therein adapted to register with the pins\' hole in the boat, a swiveling row-lock frame pivoted to said pintle, inner and outer oar portions pivoted in said frame, mechanism connecting said portions for producing a corresponding reverse movement upon their; pivots, registering pin-holes in the oar and frame, and a pin adapted to be transferred from the last named pin-holes to those upon the boat and pintle. 517,859. HOISTING ANO CONVEYING APPARATUS. Seth ¥. Hewett, Minneapolis, Minn. Filed Feb.18, 1893, Serial No.(462.883. (No model.} Claim.--In a hoisting apparatus, the combination witha fixed in- clined track, a fixed pulley, drum and rope, of a carriage, traveling on the tracks, having wheels at each side, a central pulley over which the rope passes anda frame journaled on the carriage and having an aperture at the bottom and a bridge at the top for co-operation with the rope. 517,859. HOISTING AND CONVEYING APPARATUS, 617,999. OAR o mo 517,859. VESSEL AND PaOPELLING MECHANISM THEREFOR. Rufus Folsom, Chelsea, assignor of one-half to George A. Folsom, Boston, Mass. Filed Dec. 29,1892. Serial No. 456,623. (No model ) Claim.--A vessel provided with straight or substantially straight bow and stern tubes: the bow tubes entering the vessel at the bow and extend- ing divergently rearwardly toward and terminating at the sides thereof, and the stern tubes entering the vessel at the sides and extending con- vergently rearwardly toward and terminating at the stern thereof, whereby a direct flow of water may be had through said tubes to reduce the frictional resistance of the vessel when moving through the water. 518,072. BOAT PROPELLER. Frank P.McElfresh, Kinballton, lowa. Filed July17, 1893. Serial No. 480,726. (No model.) ; Claim.--The combination with a boat of the horizontal crown-wheels, the transverse shafts having a pinion engaging with said crown-wheels) the shafts pivoted to said transverse shafts, the hubs carried thereby, the inwardly inclined adjustable arms secured to said hubs and provided with paddles, the pinions meshing with said crown-wheels and their shafts and cranks. The St. Louis and St. Paul. Special Correspondence to the MARINE REVIEW. PHILADELPHIA, Pa.,April 19.--Although officers of the William Cramp and Sons Ship and Engine Building Company, builders of the American liners St. Louis and St. Paul, have discouraged any claims of great speed' for these new boats, it is evident, as work upon them progresses, that they are expected to be the fastest big vessels in the world. The builders are sparing neither pains nor money to attain this end, and it is certain any- how that Americans will have no cause to be ashamed of the ships that are to carry the stars and stripes across the north Atlantic. Readers of the REVIEW are acquainted with the principal dimensions of the ships, but in connection with some reference here to hull construc- tion, it may be noted that they are twin-screw steamers of about the same dimensions as the Paris and New York--563 feet on the L. W. L., 63 feet - beam and 42 feet moulded depth. They will each have two quadruple ex- pansion engines and ten boilers,--six double-ended -and four single--the 'engines to develop with forced draft about 11,000 horse power éach. The- passenger accommodations will be suited to about 320 saloon passengers, 250 second cabin and goo third. And now as regards the modeling of these ships, it. may be said that great care has been taken to make them of a distinctively American type. The straight stem, full stern, graceful lines, pilot house well forward and well up, together with their taut and ship-shape appearance will denote their nationality wherever they may go. Great care has been taken to ob- tain sufficient longitudinal strength in the boats. The shell plating is riveted on the lap-butt system, and this style of fastening has'also been introduced wherever it was found advantageous to do so. All the fastest 'diners now running have shown weakness in this respect and have been. fitted with extra stiffening from time to time. The Paris and New York, which have their shells butt-straped, have shown this weakness more than the Majestic or Teutonic, which are built on the lap-butt system, and which, moreover, are longer than the former vessels and not so deep. The Lucania and Campania are also lap-butted, and though very flexible in a seaway hold well together, showing that this system is the best pos- sible. The frames of the St, Louis and St. Paul are bent out and around the © shaft right aft to the stern casting, thus giving extra buoyancy and stead- iness at a part of the vessel where it is much needed. 'This isa much bet- ter system than that adopted for the New York and Paris, which have only a few frames bent out and the remaining support for the shafting riveted to the shell. Inthe former case this swell for the shafting forms part of the hull; in the latter case it is only stuck on. Anew feature about these boats is that the main deck and the deck 518,072. poat-Rorenien mi, TT HBG UHH 40%. sits wf t PS > : e: ¢ q ' S, : Paes D Ht} ---- hd , 1 ? , at 1 rn 7* 78 i 2 z : i 70% i & int . 43 re Seeeiay : ; 3 o to oe 6 vee col 4O- below it have no round up, though the sun deck over the main deck has considerable camber. This, as will be seen, gives a better floor for passen- ger accommodation, and makes walking on these decks much easier to those who are not used to the ways of the sea. Everything is being done that can be done to give these boats sufficient stability without water bal- last, and as their dimensions do not differ materially from those of other boats that require this factor, the additional distance between the meta- center and the center of gravity must be obtained by a better distribution of weights. Nothing can be said at this stage as to the time when these boats will be completed, but. it must always be remembered that they are the first of their kind built on this side of the Atlantic and that consider- able time had to be spent upon alterations, which were made while the work on the ships was going forward. cass The method of getting out the frames appears to be a blend of the black-board and mould systems, and is well adapted to the, requirements on this side of the Atlantic. The work done by it is of the very best. Favors Surveys Under the Direction of Engineers. H. C. Pearsons, surveyer and engineer.of Ferrysburg, Mich., is heart- ily in favor of continuing the work of re-surveys. on the lakes under the direction of the army engineer officers, In.a communication treating of other questions in close relation to this subject, he says: "The remarks, in your issue of the 5th inst. of Lieutenant Charles §S. Riche, U.S.A., of Sault Ste. Marie, concerning the resurvey and charting of the great lakes, are most pertinent and opportune,. There are no, peo- ple so well qualified to.do this with economy, as those who have for years been in charge of the public works onthe lakes, and who, besides having large files of survey notes on hand, know what is wanted and where it is wanted; who could go to a place of work and dispose of it, before strangers could learn what is wanted, or where it was wanted. With re- gard to the kind or part of the work to be done, there is no question as to the accuracy or the completeness of the geographical part, But with re- gard to the depth of water, which has changed, and with the great addi- tion to the draft of vessels that has been made since the surveys for our present charts were made; a revision of the submarine or hydrographic part, in many places, has become imperative, and no people can do this work so well as those who have had it in charge since its inception,"