Arizona republican., 1921-05-02
NEW DEVICE FUR AIR MACHINES |S DISPLAYED HERE
Coast Man Claims Inven- tion Will Revolutionaze Airship Propul S 0 n Methods; Also Land Ve- hicles

Passenger and freight transporta tion at the rate of 400 miles an hour is predicted by H. c. Berry of Los Angeles, who claims to have an in vention which will ultimately revolu tionize both air and land travel.
 Mir. Berry was in the city yester day with a working model of a sue tion propeller which he demonstrat- ed for representative of The Re publican at the Hotel Adams. The type of propeller shown is for use on the rigid dirigible
 Speed of dirigibles navigated by the present form of propeller is linn ited by the vacuum created by the whirring blades. With this invention MT. Berry proposes to eliminate this discretion with the new system of generating motion, he says
 The model shown here was a cone shaped metal affair with openings at both ends. Inside, an electric mot or operated a fan which sucked is air from one end and expelled it from the other.
 Model Works, At Least
 That the demonstrating model, at least, was practical was illustrated by the inventor, who sent it whirring around on pivot at the rate of 50 miles an hour on nothing more than the force generated through inhaling and exhaling the air in its path This comparatively high race of speed was attained within one minute from the time the motor started.
 A real trial of the workability of the idea will be made within a few weeks at Los Angeles where a full l Rzn6 di,.iOib1n will ha f Y, l the new propelling bower and sent 1 slSyward for trip.
 T have given this a thorough test on land and am we'll satisfied that it will come up to full expectations in I the air" MT. Berry said. He told of l applying the idea to motor with l great success.
 Besides attaining a high rate ot | speed, dirigible equipped with this | system of propulsion can alter its
 speed with startling rapidity,'' he ex- plained This feature is especially
 essential in time of war. By rapid ly shifting at varying rates of speed
 the giant ships of the air can eludt
 the modern long range gum
 Not a New Theory
 \ The theory is not a new one, ac
 cording to Mr. Berry, but is has nev. CT been applied in a practical way be
 fore. Blade propellers create theil
 own vacuum which serves as a brak, , when driven at excessive speed MT Berry said that millions of dollar
 have been spent in experiments V , discover some way to overcome thi , vacuum.
 . T have spent $20000 in perfectin; this invention and believe it will d everything that I clam for it." MI s Berry said ''The more the horse r power and the faster the motor
 driven, the more speed will be real , ized. There is every reason to be , lieve that a dirigible equipped wit this propulsion can travel at! the rat
 of 400 miles an hour.' II Government tests of this inventio
 have been made and favorable re ports made. Countries other tha ; the United States have become inter . ested, but MT. Berry says he first de :, sires to demonstrate beyond an ! question before entering into nego ! tiations.
 a aa The Goodyear company recent = arranged to furnish dirigible fs
 the experiments but the big balloo was destroyed in a fire with otht ]. equipment at the Goodyear plant Akron, Ohio. According to MT. Berl - this firm is going ahead with plal
 to build another of the monster a vessels.