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THE MARINE RECORD. Ss NEW INVENTIONS. The following patents have been granted within the week on devices relating to water craft and commerce: No. 554,510. Dredging Machine. Samuel A. Hill, Philadelphia. Filed September 7, 1894. Claim. Ina dredge, the combination of two vertically revolving cutters, means for automatically reciproca- ting the same in constant relation to each other; and pumping and discharge mechanism for removing the soil which is produced by the action of the cutters; transverse beams on which two bearings of the cutters slide; mechanism for operating them, and for auto- matically reversing each cutter at the end of its couyse. In a dredge, the combination of a vertically revolv- ing cutter, reciprocating latterally across its front; a Suction pipe, the lower end of which is held in attend- ance upon the lower end of the cutter; a stationary pump operating in said suction pipe; and a flexible connection introduced in the downwardly projection portion of the suction pipe. No. 554,331. Screw Propeller. Boston, Mass. Filed June 27, 1895. Claim. Ina screw propeller, the combination of an operating shaft ; a hub secured to said shaft in a fixed position and provided with a plurality of journal- boxes to receive the journals of the propeller blades, and with a plurality of longitudinal guideways ar- ranged eccentric to the axis of revolution of said hub; a plurality of blades revolubly mounted in said journal- boxes; a crank formed upon, or secured to, the inner end of each of the journals of said blades; a hub fitted upon, revoluble with, and movable endwise of said operating shaft, and provided with a circumferential groove; a plurality of bars fitted to said longitudinal guidewaysso as to be supported thereby, and movable endwise therein, and firmly secured at one end to said : endwise-movable hub, and provided, at their other ends, with rectangular transverse notches or grooves; a rect- angular block mounted upon each crank-pin of said blades and engaged by said rect- angular notches in said bars; and means for moving hub and bars endwise of the propeller-shaft. The combination of the shaft A; the hub B provided with the boxes B’ B®? and with longitudinal guideways eccentric to its axis of revolution; the blades C pro- vided with the journals C’; the cranks 4; crank-pins 0’; tho blocks ¢ c fitted to said crank-pins; the hub D pro- vided with the circumferential groove @’; the shipping yoke KX; and the arms D’ fitted to and supported by said guideways, and connecting said hub D to the cranks 4. j No. 554,589. Propulsion of Boats. Walter Forward, San Diego, Cal. Filed June 14,1895. _ Claim. In the propulsion of vessels, a power-shaft, foot-rests, capable of sliding movement in reverse direc- tions, a driving cnnection between the foot-restsand the power-shaft,a propeller-shaft, a drive-shaft located ad- jacent thereto, a belt connection between the power-shaft Mellen R. Bray, and the drive-shaft, fixed and loose pulleys located on the drive-shaft, a crossed and a straight belt connecting re- spectively one of the fast and one of the loose pulleys with the propeller-shaft, and a shifting mechanism c»n- nected with the said belts. In the propulsion of vessels, the combination, with slideways, foot-rests having movement in said slide- ways and adapted to travel, in reverse directions, a power-shaft, and a pitman-and-crank connection be- tween each of the foot-rests and said power-shaft, the cranks being reversely placed, of a second power-shaft mounted longitudinally in the stern, a propeller shaft therebelow and parallel therewith, a belt connection between the second power-shaft and the drive-shaft, a balance-wheel secured on the drive-shaft, driving-pul- leys fixed on the drive-shaft, and an idler also on the second drive-shaft between the said fixed pulleys, a straight belt and a crossed belt respectively connecting one of the fixed pulleys and the idler with the propeller shaft, and means, substantially as shown and de- scribed, for shifting the said belts, whereby the drive- shaft is revolved in the same direction, whether the boat is traveling forward or rearward, and whereby also the operator may be seated facing the bow. No. 554,390. Drawbridge. Edwin B. Jennings, Springfield, Mass. Filed October 15, 1895. Claim: A truss bridge bisected at or near its middle part, the sections of the compression member being adapted to abut and bear against each other in the closed position, and the meeting ends of the tension member being provided with eyes registering when in the closed position, said sections being pivotly mounted upon the abutments and provided with readily movable pins to engage with and be disengaged from the eyes of the tension member. The combination with a centrally bisected truss form- ing as shown and described, the two vertically rotating sections of a drawbridge, of faced ends upon the upper chords, and eyes upon the lower chords arranged to have said faced ends bear and the eyescorrespond when the bridge sections are in a horizontal position, trans- versely reciprocating bolts in one section in line with the eyes thereof, and adapted to enter said eyes, and mechanism operated from the pivot end of the section for reciprocating the bolts. No. 554,349. Anti-Capsizing and Live-Saving Appli- ance for Small Boats. Waldemar Von Rudiger, Halle- on-the-Saale, Germany. Filed September 8, 1894. Patented in England, Belgium, Austria, France, Hungary, and Germany. Claim. ‘The combination with a boat, of a buoyant body, arms hinged to the boat and supporting said buoyant body at their upper ends, and weighted arms or clips also hinged to the boat and confining the buoy- aut body in a position adjacent to the side of the boat and adapted to release said body when the boat is over- turned, for the purpose specified. The combination;,with a boat, of a buoyant kody, arms hinged at one end to the boat at a point below said body and adapted to swing outwardly from the boat, and said arms ‘supporting said buoyant body at their upper ends, and arms or clips hinged at one : end to the boat, weighted at their opposite ends and confining the buoyant body in a position adjacent to the side of the boat and adapted to release said body when the boat is overturned, as and for the purpose specified. The combination with a boat, of a buoyant body, arms hinged at one end to the boat and having loops at their opposite ends through which the said buoyant body passes, and arms or clips hinged at one end to the boat and curved or bent so as to embrace the buoyant body and hold it adjacent to the side of the boat, and carrying weights at their opposite ends, as and for the purpose specified. The combination with a boat, of an elongated inflata- ble tube, a valve therein, arms hinged at their lower ends to the boat and terminating at their upper ends in loops through which said tube passes, the latter lying below the upper edge of the boat, arms hinged at their upper ends to the boat and being curved outwardly and inwardly so as to embrace the said tube, and weights at the lower end of the said latter arms. No. 25,159 Pleasure Boat. William H. Mullins, Salem, O. Filed January 6, 1895. Term of patent 3% years. ; TRADE AND INDUSTRIAL NOTES, The Board of Supervising Inspectors of Steam Ves- sels; at its annual meeting in January, 1896, approved of coil and pipe boilers presented by the following named persons and firms: Wm.H.C. Lyons, Philadel- phia, Pa.; Samuel M. Gray, Providence, R.I.; Isaac E. Shepardson, Providence, R. I.; C. R. Benton, Vergennes Vt.; A. W. Finlayson, Detroit, Mich.; TF. W. Godwin & Co., Norfolk, Va.; Geo. L. Whittington, Sea Isle City, N. J.; Chas. P. Willard & Co., Chicago, Ill.; Wm. Old- man, Jr., Buffalo, N. Y. (Horizontal ana Vertical Boil- ers); Rochester Machine Tool Works, Rochester, N. Y. (Buckley Patent Water Tube Pipe Boiler); Joseph Pro- vencher, Kast Providence, R. I; B. N. Drouillard,Wyandotte, Mich. (Drouillard e. Water Tube boiler No. 1); John Mohr : & Sons, Chicago, Ill; W. Herbertson, Cadwalader, Pa.; William E. Plummer, Jr., Buffalo, N. Y.; R. Weston & A. M. Lemke, Saginaw, Mich.; Baylies C. . Clark, New York, N. .Y.; L. W. Loomis, Carrollton, Ill; J. F. Craig, Toledo, Ohio, (Craig Water Tube Boilers Nos. 1 & 2); Geo. EK. & Chas. A-Painter, Pitts- burg, Pa. The Globe Iron Works, Co., of Cleve- land, has installed in its foundry a Whit- ing cupola of 14 tons hourlycapacity. Vessel agents and others interested in maritime mat- ters are greatly pleased at the blue prints issued recently by W. H. Singer, proprietor of the Singer Tug line, which ‘indicate the channels and all of the freight houses, docks, elevators and mills in Duluth and Supe- rior harbors. EDO Oe Oe AN INEXPENSIVE BUT EFFECTIVE PUMP. An advertisement appearing in another column calls the attention of Readers of the RECORD to the merits of the Vanduzen Steam Jet Pumps. These pumps are unique yet simple in design, being so constructed that when placed in position for regular duty they cannot retain water while not at work, and hence cannot freeze up in the coldest weather. Being made of brass, they will not crack or break because of extremes of tempera- | ture, and will stand greater strain and will not rust. They will always be found ready for work and need no watching nor constant looking after; when put-in place, it is only necessary to put on steam and it starts to’ work, and turning off steam will stop it. This pump is used for many different purposes; in wells, pits, quar- ries, mines, river and lake sides, tube wells, in tanneries, mills, factories, on steamships, tugs, ferry boats, etc. As they operate in conformity to the law of nature, with steam as the active ayent, inquirers are assured of an absolutely reliable pump at all times. Thousands of them are in daily use, not only in the United States, but in at least twelve foreign countries, Australia, Hawaii, Japan, India, South Africa, Cuba, W. Indies, and in Mexico, and Central and South American countries, and everywhere they give full and entire satisfaction. The price is low, and the setting up simple. The cost ranges from $7 for the smallest size, up to $75 for the largest size, which will elevate from 10,000 to 15,000 gallons of water per hour to any height not exceeding 50 feet, ver- tically assured. Where the height exceeds 50 feet, but not over 100 feet ft., then two pumps are used one above the other. The K. W. Vandusen Co., Cincinnati, O, will send a price list and illustrated catalogue free...