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MARINE REVIEW. The Detroit Boiler. A new water tube boiler, to be known as the Detroit boiler, has just been brought out by the Detroit Screw Works, Detroit, Mich. and is illus- trated 'herewith. In studying out this boiler, the inventor, IN lersepiadte lee Taylor, sought to improve upon the boilers heretofore in use in the follow- ing particulars: To make a boiler of the most simple design; one which can easily be cleaned internally with the ordinary flue scraper or other tools now in common use; one which can be more readily repaired than any other water tube boiler yet made; one in which separa- tion of steam from the water is accomplished while rising to the drum, thereby dis- pensing with the super- heating coils; a boiler which shall be all heating surface; to do away with the large, cumbersome pipes and fittings usually employed for the down- flow and. distribution of water; one having the most direct and positive circula- tion, constantly supplying all of the tubes with water, thereby preventing unequal expansion; one which will not prime during the hard- est firing nor when _ start- ing the engine. Referring. to the illus- trations, it will be seen that the Detroit boiler consists of one large uppet drum, connected for its entire length to the water distributing pipe, below and parallel with it, by means of one row of vertical pipes for down-flow of water. To either side of the water distributer the lower tube maniiolds are screwed in, and from these the tubes proper continue to the upper man- ifolds, which are connected to the top part of the drum with right-and-left nipples, for convenience of detaching 'in case of repairs. The tubes are inserted through the upper manifolds and screwed into both manifolds with right-hand threads, the top end of tubes being so enlarged that both ends engage at the same time. The holes in the top of the upper mani- folds are closed with brass plugs, they not being exposed to the fire. Both manifolds are also plugged at both ends for convenience in clean- ing out. To each end of the water- distributer is attached a. sediment- pocket, extending to the floor. To this is attached a foot or flange for supporting and fastening the boiler, és which is also supported at the sides by the casing, the latter being fastened to the plugs in the upper manifolds. | ; 1G) From the side elevation it will be seen that the manifolds are placed so close together that the flame has to pass first to the outs'de, then toward FRONT ELEVATION. TUBES AND MANIFOLDS. een W i: i a = | | | ni Le Hn A | | is ul A SIDE ELEVATION. the center, thus causing an upward circulation in the puter Uap these being exposed to the hottest fire, and a Conan ee ane water in nearest the drum; hence the steam is partially ue ieee enters the upper manifolds, before it enters the drum. bei cast down an the drum it strikes a baffle on either side, the water age ep aeeenigaa ed: the steam rising to the upper space where a perforated dry-p1p extending from end to end of the drum. ee pd ee +Mary H. The Crosby Transportation Co. has een = See Boyce for the winter route between Milwaukee and Gran , to begin about Dec. 20. 13 In.the Grasp of Jack Frost. . The novel illustration printed herewith is from the head oftteala gent out by W. F, Herman, general passenger and freigt esi 8s land. & Buffalo Transit Co., eS ONG AU Be CHoe ew Gla been thought worthy of reproduction. The orig*mal-contains an attract- ive border and is neatly printed on a card somewhat larger than the ordi-° nary postal card. It has attracted a great deal of attention among railway freight agents and shippers who have dealings with the C. & B. Co. The Queen's Yacht. Machinery for Queen Victoria's new yacht, building at Pembroke dock yard, will be constructed by Messrs. Humphreys, Tennant & Co. of London. The yacht is to be of steel, sheathed with wood, and copper cov- ered. She will displace about 4,600 tons on 18 feet draft, the length and beam 'being 380 feet and 50 feet respectively. She will have three funnels and two masts, and will be a yacht pure and simple, with no pretensions whatever to the cruiser element. There will be two sets of triple expan- sion four-cylinder four-crank engines, driving twin screws, and indicating, collectively, 11,000 horse power at 140 revolutions, equal to a piston speed of 910 feet per minute. With this power the yacht is expected to move at 20 knots an hour. Each engine will have one high pressure cylinder, 26% inches; one intermediate, 444%4 inches; and two low pressure, each 53 inches diameter; with a stroke-of 39 inches. Steam will be supplied by eighteen Belleville boilers, working at a pressure of 300 pounds, reduced at the engines to 250 pounds. These boilers will have 4-inch tubes in the boilers, and 234-inch tubes in the economizers placed in the uptakes. With a total grate area of 840 square feet, and a heating surface of some 26,000 square feet, it is expected that these boilers will steam easily at 11,000 indicated horse power. New Hatch Cleat. The Waters hatch cleat is an ingenious little time and labor-saving device recently patented by Joseph Waters of South Shields. The whole arrangement is so simple, and withal certain in its action, as to need no description at our hands. A wedge-shaped socket F receives, previous to being fixed to the hatch coaming, the jambing piece E and the wedge D. These serve to firmly wedge the binding bar A against the coaming B, the tarpaulin cover C being between them. Neither the jambing piece or wedge can come out of the socket, as they are retained by the lips and shoulders shown, while similarly when disengaged the wedge is prevented from falling into the locking position by the bevelled edge G resting upon a corresponding edge H on the socket.--Shipping 'World, London. Referring to a notice in the last issue of the Review from the Ameri- can Ship Windlass Co. about wire rope used on their towing machines, a Philadelphia correspondent says: "Somebody is evidently badly mixed up in this statement about the strength of hawsers. rom the table of equipment in the rules of Lloyd's Register, it appears that the breaking. strain of a 22-inch hemp hawser is 104 tons, and that of a 5¥%-inch (134 inch diameter) steel hawser is 71 tons, and not 7,000 tons, as stated in the article referred to." announcing the close of navigation. Te Hage?