Stevens Institute of Technology - Link Yearbook (Hoboken, NJ)

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1 l Co. and the Radio Corporation, while his multiplex telegraphy patents have been re- cently acquired by the American Telephone 8: Telegraph Company. Mr. Vreeland has also done exploration work in the Canadian Northwest, has collected specimens for tl1e National Museum and the New York Botan- nical Gardens, and is a member of the Com- mittee on Conservation of the Camp Fire Club of America. Another earnest and talented worker in the field of radio communication is Professor Louis Alan Hazeltine, '06, Head of the Department of Electrical Engineering here at Stevens. His radio work has included research and development, and services as expert in patent cases. His private researches have been in connection with the thermionic bulb, which has become a powerful factor as in radio communication. The results of his research along this line are embodied in a paper entitled Oscillating Audion Circuits. general mathematical discussion of the theory of the thermionic oscillator which appeared in the English language. He has also published other papers on sub- jects relating to radio work, and has several patents pending in connection with radio communication. In addition to his radio work and teaching duties Pro- fessor Hazeltine has done consulting engineering work on the problem of lessening corrosion of underground structures by stray currents. During the war Professor Hazeltine organized Radio and Buzzer classes for men desiring to enter the Signal Corps, while from May to September, 1918, he gave continuous service in the radio laboratory at the U. S. Navy Yard in Washington, and until July, 1919, continued in a consulting capacity. Early in February of this year, Professor Hazel- tine was asked by Secretary of Commerce, Hoover, to be a member of a conference for the control and development of radio telephony. Of special interest in this connection is the fact that Professor Hazeltine was one of the four civilian members, six government officials com- pleting the membership of the conference. - Railroad development has occupied the attention of a number of Stevens Alunmi. 11 L. A. IIAZELTINE This paper contained the first cronos Gruns' ZE2

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SE. 1 lg, la' E. g, I l L ii , iii 1 I if K' 1 ij l. i. f' , li F 1 3 1 'i i Q. ,F . E il ,ETSI 5 if ff ,i vi 1' . 3 I ff' xx- ' 51, ' ,. ?f i Iron by Direct Current in Street Soil, and Electrolysis from Stray Electric Currents. Before entering Stevens he obtained a great deal of practical electrical knowledge in the shape of the electrical works of Bergmann 8a Company, New York City, and in the General Electric of Company Schenectady. Upon grad- uating he was made instructor in applied electricity at Stevens, and later became pro- fessor. It is mainly due to his study and edorts to make improvements that the course in electricity kept pace with the times and that so many Stevens graduates have been fitted to hold responsible positions in the field of electricity. Nothing is more conducive to good health and comfort than proper heating and ventilation. Knowing this and recognizing the necessity for replacing the obsolete systems of heating and ventilation then in use in the large buildings which were just beginning to play an important part- in the growth of our larger cities, Alfred R. Wolff, '76 Cdeceased, 19095 began the study of the problem in 1880. So well did he perform his work that he was continuously receiving commissions from former clients whenever any important building operation was being contemplated. His field of activities was very extensive, covering the heating, cooling and venti- lating of office buildings, banks, churches, schools, public libraries, clubs, hotels, hospitals, stores and residences. Perhaps a short list of the buildings that he equipped with heating, cooling and Ventilating plants, will give a clearer idea of the importance of the work he did. Among these structures are :-St. Patrick's Cathedral, New York, Morton Laboratory of Chemistry, here at Stevens, The Hall of Records, New York, Metropolitan Building, New York, Symphony Hall, Boston, Gimbel Brothers, Philadelphia, Bellevue Hospital, New York, Bank of Montreal, Montreal, Stock Exchange, New York, Plaza Hotel, New York, and the Public Library, New York. In view of the present widespread interest in the wireless telephone, it seems opportune to speak of the part Stevens graduates have played in the development of the telegraphic sciences. The patents of Frederick King Vreeland CM. E. '95, Sc. D. 'QU in the field of radio telegraphy include the electrolytic detector, the widely used beats receiver for continuous waves, and a variety of minor devices. He is now doing research work, devoting himself largely to the elimination of interference by foreign signals, and atmospheric strays. His sine-wave oscillat- or developed in 1904 was the first regenerative electrical oscillator. He later de- veloped a system of multiplex telegraphy with alternating currents which was dem- onstrated in 1909 over a 250 mile line with twelve complete sending and receiving sets operating over the same wire. He has taken out over twenty-five patents of which those relating to the oscillator have been purchased by the General Electric 1-'. K. VREELANDS. 10 ZEZE

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1EQ Among these is George Gibbs, '89, who has taken out many patents on railroad devices. Of particular note is the fact that he is the inventor of the first all-steel incombustible passenger car ever built. In 1887 he invented a steam-heat coupling, and in 1896 an inter- locking switch andsignal apparatus for rail- way crossings, and a derailing device for railway tracks. He has acted as consulting engineer for railroads throughout the country, as well as forthe Baldwin Locomotive Works and the Westinghouse Electric and Manufactur- ing Company. From 1903 to 1912 he was Chief Engineer of electric traction and station construction for the Pennsylvania Tunnel and Terminal Railroad Company. He ' A' BENSELI was also a Member of the U. S. Government Commission of Railway Experts to Russia in 1917. Mr. Gibbs is a Fellow of the American Institute of Electrical Engineers. Robert Munn Dixon, '81 Cdeceased, 19182, spent the greater part of his life in developing heating and lighting systems for railway cars. He was identified with the first application of steam from the locomotive for heating passenger cars and with the development of the use of gas and electricity for lighting railway cars. In the same connection he conceived and put into practice many new and useful schemes including the perfection of hot water circulating systems and direct steam systems. Mr. Dixon started his professional career as adraftsman for the Delaware Bridge Company, and in 1883 entered the employ of the Pintsch Lighting Company. In 1888 he became Engineer of the Safety Car Heating and Lighting Company and Manager of the Pintsch Compressing Company, becoming President of both companies in 1907. Due to his handling of the financial affairs of the A. S. M. E., that society has become one of the leading professional societies of the country. John Anderson Bensel CM. E. '84, E. D. 'QU became Assistant Engineer and Assistant Supervisor in charge of improvements of Dock and Freight Terminals for the Pennsylvania Railroad a few years after graduating, and from 1889 to 1895 he was .Assistant Engineerof the Department of Docks,New York City. Among the various capacities in which he subsequently served were those of Engineer for Philadelphia in improvements of a mile of waterfront on the Delaware Riverg Engineer-in-Chief, Department of Docks, City of New York, Commissioner of Docks, 1906 to 1908, President of the Board of Water Supply Constructing the new Catskill System, 1908 to 1911: and State Engineer of the State of New York, 1911 to 1915, during which time he was employed on the construction of the Barge Canal across the State. During the recent war he was Major of Engineers, Army of the United States, commanding the 125th Battalion of Engineers. He is at present consulting engineer for various municipalities in New York State, and con- 12 2 E