Show ElfiHTY MiLES AN IUR c J ACROSS TIE OCEAN J Serpentine Boat Will Travel at that Speed Says its Inventor Charles 11 Savyer Principle of the Locomotive and Rails Reversed in its Constuction and Resistance oft of-t the Water Overcome by Mechanics I I Washington July 10To mako It possible to travel to Europe In three Jays has been the dream of many marine ma-rine Inventors To be able to pierce llio waters of the river or ocean at a speed of eighty miles an hour and constitute con-stitute a marine express service which tti discount all present facilities Is a possibility which now seems to have 1 I Uceii narrowed down to a science It will not bedonu by a leviathan of the deep any more than the fastest I speed attained in naval architecture Is consummated by warships propelled by tho highest engine power but by a small serpentineshaped boat which will cleave Its way through the waters like a piece of living mechanism At least that is what its Inventor who has procured letters patent for his Invention and is about to start building build-ing his first vessel In Minneapolis says for It I That he Is not a dreamer Is proved by the fact that Mr Sawyer is master mechanic for a leading western railroad rail-road x The principle of the new invention is combination of the Ingredients of railroad and marine construction Mr Sawyer writes the following graphic account of his marvelous achievement and plans t Minneapolis July GL The principle I apply In my invention is an old and familiar one with marine engineers and shipbuilders screw propeller As used today tho screw propeller not a truo screw but simply a fair representation represen-tation of one Screw < propellers generally gener-ally are mado with three or four flat arms or paddles which represent the threads flanges of a screw The water wa-ter In relation to these represents the nut Hence the term screw propeller But with this class of propeller it Is utterly impossible to attain a speed of over eighty revolutions per minute In getting up a rapid movement of the vessel Over this speed the disintegration disinte-gration of the nut takes place the propeller I peller flics around throwing off the water and forming a vortex about It with the result that the vessel comes to a standstill regardless of the fact that the engines are pounding out ninety or more revolutions a minute The problem in shipbuilding today when desiring speed is In the construction = construc-tion of the body or hull The engines are perfect In fact they are ahead of anything else about a ship giving more work for the propeller than It can take care of The shipbuilder Is obliged to I produce a body or hull that will mal cup c-up the desired Increase in speed I use the screw principle but I apply ap-ply it In Its complete and truest form together with a perfectly formed and balanced hull I believe I have produced pro-duced a vessel that lllls the bfll for 1 speed Then afloat my boat resembles the whale backs seen on the lakes and on the dry dock It looks like nothing eJso but a gigantic cigar provided with a large funnel at either end that stands well up out of the water and serves as conning tower or pilothouse and smokestack and ventilating shafts Between these funnels and complete J i yn rJr t 1 v I A1 t t l 9 I > I Y t 1 A e r r il h ray 11 F Charles H Sawyer Minnesota ly surrounding main hull or body 151 he propeller shell or screw This revolving shell or screw is I made to revolve about the hull on ball hMrlngo which travel In a grooved collar or band screwed to tho outer surfaco of the hull near the funnels On the ends of the screw shell are heavy flat leather rings which are adapted to engago throe or more threads or flanges on the outer radial faces of the collars on the hull Together with a sufficient supply of oil applied from within the hull I secure ri perfectly smoothrunning I and watertight connection Secured on the I inner surface and at the central portion por-tion of the revolving shell are steel ribs I or tracks constructed of railroad rails The engine are carried within the hull I I or body at Its lowest portion The floor of the hull Is slotted at the place over the tracks to allow l tho driving whools of the engine to engage the track or ribs Power then Is trans = mlttcd lo the screw 1 shell by friction This Is tho principle of the locomotive locomo-tive and rails reversed wherein tho engine stands fast and the rails travel forward or rather the principle of the I testing platform used in almost all of tho locomotive shops About the outer surface of the screw shell are wound two or three steel flanges making three turns around Inthe loigtlr the shell This gives us a perfect crow propeller I and one that is always entering solid water which Is not the case with the rear propeller which has struggle with broken and addled water made so by the hull In front of t I provide protection for the flanges on that portion of the screw shell which stands above the water line by a shell or back This shell IB made to1 provide an upper deck and promenade I and Is used the same as tune decks of nil vessels rio used I I claim a high rate of speed for this type of vessel from the fact that In three revolutions of the screw shell the boat travels one length ahead and the speed Is limited only by the engines and material In its makeup j I i lh r Lra I Ji J i I = I a The latest marine wonder says its inventor Charles H Sawyer a Minneapolis Minne-apolis master mechanic shortly will revolutionize ocean travel It is he asserts the first time screw propulsion has been employed correctly correct-ly I have experimented with a small sized one for some time and have always al-ways found it on top and ready for business bus-iness At present I am building one for pleasure capable of carrying fifteen or twenty persons on the promenade deck I which intend putting on the lakes near our city I To give an illustration of how a larger vessel would be constructed on the same basis I will describe a boat 150 feet long and 25 feet In diameter It Is cigarshaped open at both ends with four steelflange spirals starting from the end at each Quarter winding around at an angle of 40 degrees and I running the entire length of the revolving re-volving shell to which it is riveted solidly sol-idly forming a solid frame and as per poet a screw as can be comprehended What an enormous hold on the water It obtains when submerged three I fourths of Its depth with rings In each end and packing rings and rollers to form a watertight joint thus reducing I reduc-ing all friction In this shell to a minimum mini-mum can bo Imagined In this shell are ten rings of railroad steel riveted solidly to the shell forming form-Ing part of the frame of a ship and also the track for five large engines to run on With eightfoot drive wheels standing side by side in the bottom of this shell these engines have but ono I pair of drive wheels each with pilot trucks front and back of drive wheels On five drat awheel axes Is saddled a big steel frame with edges resting on the pilotwheel axes upon which Is a battery of five boilers and coal bunks Inside of this shell is an inner shell with the ends extending out at both ends e with heavy rings around It where I they pass through the outer shell tq I form part of the rollerbearing and expanding ex-panding socking rings and turning up I at each end in a triangle shape so that thoy form a sharp bow and stern also a large passageway of ingress and I egress to the boat and also act as supports sup-ports for the dock and cabin I Tho Inner shell is cut away so that all the wheels protrude through and rest on the tracks being braced HO that al the weight of the Inner shell falls on the driving wheels With the entire I weight dn the engines they will never drive themselves more than two feet off the center line of gravity There will be about one hundred times more surface to fulcrum to with the screw than the ordinary boat has and the screw taking the water from the how does away with the friction of driving the hull through the water the faster tho shell being driven the greater hold being obtained upon the water Being driven by centers of gravity this counterbalances coun-terbalances the sldo draught that would result In case It were driven by a shaft The fleck is saddled down over the top l of the blades by a heavy steel fender at both cds s to protect the blades from the deoKs For a lifesaving boat without lhedeck It must prove a wonder won-der for penetrating tho rough sea It would also be most suitable for mall dispatch and part pleasure boats or for naval purposta in the capacity of a ram By putting an armorplate turtleback tur-tleback exterior In place of cabin and an explosive point on the bow and speeding at eighty miles an hour the point could be driven into any battleship battle-ship afloat The boat then could back off explode the point and retire while I the ship sank to the bottom I CHARLES H SAWYER |