Daily Arizona silver belt., 1908-11-08
NEW ROTARY
 STEAM ENGINE
BOSTON ENGINEER CLAIMED N
 HAVE SOLVED PROBLEM
Has Puzzled Inventors Since Days of James watt-Nechanism Is Expect cd to supplant rurbine-Important Part Played by New Valve. ...

| man, Jr, a Boston civil and consulting | engineer, 39 years old, believes he has perfected, in a rotary steam engine of his invention, a machine which solves problems that have baffed inventors since the days of James Watt Watt, the commonly accepted inven tor of the engine driven by steam, tried the rotary principle, but even his gen. jus failed to accomplish bis end with it. Since his time hundreds upon hundreds of men, lured by the fascination of ac. eomplishing thing which seemed ab- surdly simple, and which was really axtraordinary difficult cssayed to drive a wheel around by power of steam rush. ing onward in the same direction as | the wheel.
 NIT. Hartman was led to make his invention by his studies in quite anoth. CT field. A scientific student of the pos sibility of human flight by means of some power-propelled mechanical de vice, he was early led to realize the necessity of reducing to the utmost the ration between the weight of an engine and the horse power which it could pro- | duce.
 | Five years of labor produced an en. | zine of many original features, which
 has been in successful operation for exhibition and test purposes for some weeks at South Boston and has recently been transported to the Massachusetts Institute of Technology for official tests thero Later ii will be publicly eIhib- | ited.
 | In this engine Hartman claims to have overcome the two great obstacles that have blocked the way of earlier inventors who tried to perfect & TO- tary engine, namely. friction within the cylinders and leakage of steam. l Generations of engineers have real
 iged that the rotary engine, if it could be made efficient, was the ideal en- | gire," says Mr. Hartman. cover the turbine, operated by the force of i'm. pact or steam, the rotary has very great advantages, not the least of which are its economy of power and its ability
 to start with instant force and stop instantly.
 "With the old-fashioned reciprocat. ing engine. the rotary can compete un- lquestienably. It has the advantage of economy of space and in construction, and of utilizing the force of momentum. Horse power for horse power, tho TO- ! tary engine can be built for about three-quarters of the cost of the recip' rocating engine"
 | MT. Hartman is a ,nativeof Somer. vile. When he was very young his
 parents moved to Dedham, whre he grew up. Until about IS he attended
 Mir. Lockes private school in West Dedham. He then took up his techni- cal course. After graduating he went 10 Newport and entered the employ of Cornelius Vanderbilt as surveyor. Ali. l ter two years of service surveying, first for Mir. Vanderbilt and then at Tuxedo Park for Pierre Lorillard, MT. Harri- man went south, and for year was occupied surveying timber land and min ing properties in the mountains of Ten nessee.
 | Pushing still further southward to the extreme southwest of Texas, he did the surveying for project which then \ attracted much attention, but which
 was afterwards abandoned, the con struction of Willett's outer harbor up- on the coast of the Gulf of Mexico, below the city of Galveston. Return ing to Boston, he formed with his brother, Geo. W. R. Hartman, firm of civil and consulting engineers. He has been connected with several inter esting enterprises, the most recent and best known of which probably has been the projected construction of the .Dia- 1 mond shoal lighthouse of Cape Hat | teras.
 Outside of business hours Mir. Harri man s chief hobby has been the study in a scientific way of'the problems of mechanical flight. He is today recog nized as one of the frstto prophecy the achievements of the present year to- wards the attachments of successful flight by man.
 MT. Hartman married relative of the late Henry o. Peabody, well known to all military men as the inventor of the Peabody rife. He is and has been for several years resident of Brook l line. ~