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Patents Show Marine Development Latest Marine Inventions Described Specially Prepared for Marine Review By Richards and Geier Patent Attorneys, 274 Madison Avenue, New York Ae HE present invention relates to boats, especially to lifeboats, and an object of this invention is to pro- vide a new method of constructing boats. Another object of this inven- tion is to increase the air content of the boat and thereby the float- ing properties of the same by suitably constructing and arranging the seats. BOAT : United States patent No. 1,755,724, issued April 22, 1930 to Ernst Burmester, of Burg, near Bremen, and Hermann Hein, of Bremen, Germany. HIS invention relates to steam or motor propelled ships provided with a deck to accommodate aero- planes. According to this invention means are provided for discharging the smoke or exhaust gases from the en- gine in a lateral direction below the level of the aeroplane deck more especially when the latter is to be used to receive or launch an airplane. Preferably the ship is provided -with telescopic or like disappearing funnels which, when extended, enable the smoke or exhaust gases to be dis- charged in the usual manner. The disappearing funnels are in some cases furnished with small open- ings to allow sufficient smoke or ex- haust gases to escape in an upward direction through the airplane landing deck so as to indicate the direction of the wind. SHIP WITH AIRPLANE DECK United States‘ patent No. 1,757,770, issued May 6, 1930 to Wilhelm Hefti, of Winterthur, Switzerland. 54 MUUUUUNUAROOEUUUQON0N0S0000000000000000080000 EU UUNOOONGRLSULOOOOE AAT OEUU ee E HAVE made arrangements with the patent attorneys, Rich- ards & Geier to publish data relat- ing to letters patent issued in the United States covering inventions which may be of particular interest to our readers. The patents described, some of which have accompanying cuts partially illustrating the inventions, are all of recent date and we are planning, in subsequent issues, to pub- lish similar information on patents pertaining to various phases of marine development work. Should our readers be interested in obtaining a printed copy of any of the patents appearing in this issue, or any other patent de- sired, such copies may be had by ad- dressing request to the editor or direct to the contributors of this page. AUIOUNEONUAETANODUOEOUULUONEAAUOREGUOALEEUUEOOECAULCUEUOUEUEEOUEDEESUO TER ETT HIS invention relates to sub- marine cables and more particu- larly to cables over which signals are transmitted involving a range of fre- quencies from zero to several hundred cycles per second. An object of this invention is to diminish the sea return resistance of submarine cables, particularly for the range of frequencies just mentioned. SUBMARINE CABLE United States patent No. 1,756,546, i 4 April 29, 1930 to John J. Gilbert, of Port Wask ington, New York. ilbert, of Port Wash- ae HE present invention relates to improvements in seagoing vessels, and an important object of the inven- tion is to increase the speed by reduc- ing resistance, to increase the effi- clency in handling by permitting the vessel to turn within its own length and to be slid sideways with the use of rudders and propellers, and to in- crease stability in rough seas. Another very important object of the invention resides in the provision MARINE REVIEW—August, 1930 of a vessel of this nature adapted to attain speed in ocean travel for freight or passenger purposes and capable of being used effectively in salvaging operation and particularly in salvaging of submarines. A still further very important ob- ject of the invention resides in the provision of a vessel of this nature including a plurality of water line pontoons, a cabin pontoon, and power pontoons. Another very important object of the invention resides in the provision of water type tubular members for interconnecting the pontoon. A still further very important ob- ject of the invention resides in the provision of a vessel of this nature which is strong and durable, thorough- ly efficient and reliable for the pur- pose intended. VESSEL United States patent No. May 6, 1930 to Homer C. Douglas, of Liberal, Kansas. 1,757,174, issued gs HIS invention relates to hydrau- lic ship propulsion, and the inven- tion has for its general object to provide a novel assemblage of me- chanism whereby to effectively direct a jet or stream rearwardly for the propelling of the ship forwardly or a jet or stream in a forward direction to reverse the vessel. SHIP-PROPELLING MEANS United States patent No. 1,758,847, issued reir 18, 1930 to Amos C. McIntosh, of Eureka, alt,