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on the Howden system. The vessel was designed and its construction su- pervised by Messrs. John Reid & Co., of Montreal and Glasgow. It will be employed by its owners, Messrs. Jaques Co., of Montreal, in their pack- age freight trade between Montreal and Fort William. A NEW STEAM-VALVE-LESS PUMP. The line engravings herewith show in section the steam end of a unique design of duplex steam pump, of which a full line has been brought out by the Manistee Iron Works, Manistee, Mich., for all purposes. In this design, steam valves and stems, rockers, links and all other gear are dispensed with, the steam pistons only remaining as moving parts. In Fig. 1, the ports AA are steam ports; CC are exhaust ports, and BB and DD are alternately steam and ex--- haust ports. The cylinders are cast together and the ports are V-shaped in section so as Le we UK Lhkddddliedihediddlddeddiddidhebihedsed LIL, T : LE ee Khkdddddidddiledede/ N= [es Me \ -- yn SVS + N er YR \ N A ' =, IN fal oe: X = -- 7 ' | THE Marine REVIEW July, 1910 Fig. 2--MANISTEE STEAM-VALVE-LESS FEED to give in effect a graduated opening as they are uncovered by the pistons. Fig. 1 shows the pistons in four dif- ferent positions and it will be evident on inspection that the pistons must complete their strokes before the ports SN . ovo SJ RaW Ars Co WCQ@0.-- ih \ WG \ SS - > N y) a Ree = AG oN i ae SS orzo inn aS Za June 14 at the Y OffY"4 A Fic. Sections oF MANIsTEE STEAM-Vatve-Less Duptex STEAM Pump. Pump. can change from steam to exhaust and vice versa. This, together with the system of partial two-stage, or compound, working effectually prevents running away and this feature of full stroke and safe speed, regardless of losing suction, s ought to be particularly valuable on. water ballast work where the ordinary duplex invariably fails, as the "drying out" period approaches. The elimination of outside working parts requiring lubrication or protection also makes possible distant or exposed installations, or the pump may be en- tirely enclosed. There is manifestly no opportunity for arrangement, since there is nothing which can be altered nor mius-adjusted and so far as_ the steam end is concerned, so long as the pistons are in working order, the pump must continue to operate. Fig. 2 shows an outside center-packed pump or the 6 <x 5 =x 10-in. size, as made for marine use for boiler feeding and fire service. OBITUARY. Frederick Rehbaum, a well known marine engineer, died at his home in Buffalo on July 5. He had been with the Anchor Line for many years, and was chief engineer of the -Wissahic- kon. Gen. James ---A. Dumont, who was for 2/7 years 'connected with the Steamboat Inspection Service, diedon home of his in Rochester, N. Y: He was 86 years old and his illness was the first which ever confined bed. "He held the position of supervising inspector general of the Steamboat Service for son him to Inspection 25 years, retiring from that position to become inspector of hulls of steam vessels for the New 'York district. He retired from sér- vice in 1904,