US1536940A - Speed boat - Google Patents

Description

May 5, 1925. 1.536.940

v E H; N. SHER'BURNE';

SPEED BOAT Filed Jui 14. 1924 s-sheets-sheefl 1 May 5, 1925.

- H. NI SHERBURNE SPEED BQAT Filed July 14. 1924 3 Shqi-Sheet 3 ENJ/wr Patented May 5, 1925.

g 1,536,940 T -orricrz.

HENRY NEWTON SHERBUREE, OF PLAQUEMINE, LOUISIANA.

SPEED BOAT.

Application flled July '14, 1924. Serial No. 725,932.

To all whom it may concern:

Be it known that I, HENRY NEWTON Smut BURNE, a citizen: of the United States, resiliing at Plaquemine, in the parish of Iberville 6 and State of Louisiana, have invented certain new and useful Improvements in Speed Boats; and I do declare the following to be full. clear, and exact description of the invention, such as will enable others skilled in the art to'which .it appertains to make and use the same.

The present invention relates to improvements in speed boats and has for an object to provide a light craft susceptible of carrying relatively heavy weight at high speed in very shallow water without interference from marine growth such as water lilies.

Another object of the invention consists in the provision of an improved hull of improved formation in order to adequately sustain the weight ofthe motor and cargo without allowing the draft to become too great as to interfere materially with the speed of the boat and the bottom of the hull is co ordinated in its construction with weight and disposition of weight of the motor to properly place the center of gravity and to off set both the Weight of the motor and the propelling forcethereof. 3O W"ith the foregoing and other objects in view, the invention will be more fully do scribed hereinafter, and will be more particularly pointed out in the claims appended hereto.

In the drawings, wherein like symbols refer to like or corresponding parts throughout the several views.

-- Figure 1 is a side elevation of an improved speed boat constructed according to the 0 present invention.

Figure 2 is a top plan view of the same. Figure 3 is an end view of the boat.

Figure fl is a. bottom plan View.

Figure 5 is a transverse section taken on the line 55 in Figure 2, and

Figure 6 is a similar section taken on the line (36, also in Figure Referring more particularly to the drawings 7 designates generally the hull of the boat, 8 the motor and 9 the propeller which is. an air propeller of large dimensions situated above the rear portion of the hull and for this reason the motor is elevated upon a stand constructed especiallylfor the purpose, the-stand being received upon the longitudinal timbers 0 and 11 which. run

the full length of the iull and which are a part of the hull construction as shown in Figures 5 and 6, t-llBSfitlmbGIS reinforcing and strengthening the hull ina longitudinal direction and to opposite-sides'of the longitudinal center of the hull atequ'ally spaced distances, so as to balance not only the hull in {)he water, but also the motor upon the timers. v i At the rear ortion of the hull these timbers are of su cient height to project above the rear deck 12, but at the front portion of the boat as shown in Figure 5 the timbers lie beneath the convex deck 13.

In Figure 2 the cock it is shown at 14 for receiving the seat or the passengers and the controls for the rudder and motor. The boat is steered by means of the rudder 15 pivotally suspended as indicated at 16 of the rudder gear whichis held in appropriatelbrackets 18 upon the end of the boat. The rod 17 is spread at its lower ends into forks 19 which embrace the side portions of the rudder and carry a pin 20 pivoting through a slot 21, of the rudder blade in order to permit the blade to swing in a ver tical plane, although the weight of the rudder will normally hold it down somewhat beneath the flat bottom oftheboat. In pass ing over obstacles as Water'lili'es andthe like in the water the rudder 15 in ayrise to the dotted line position shownin Figure-l so as to avoid any breakage in the rudder blade or its parts. y

The hull is Wide as compared with its length in order to give stability to the boat, especially with the elevated motor and propeller which Weighs considerably and the bottom of the hull is divided into front and rear sections which are separated by the step 22; this step'occurring about midway of the length of the boat and extending in a transverse direction. The front section of the bottom is composed of half portions 23 and 24 shown in Figure slope in opposite directions 'from the keel line 25 upwardlytoward the outer ed e of the hull and at the same time these hul sections are curved, as indicated in F' 1 from a high point at the bow gradually downward toward the stern, this curvature being indicated at 26 and moreover as shown in Figure 4: the bow is pointed in the usual.

t which half portions 75 from the vertical rod'l7 forming a portion verticalplane of the side of the boat.

The rear section of the bottomis composed of mil-time 28 and'29 whichiextend on a slig inclination froma high point at the step 22.downwardlystoward the rear end of the boht and these portions 28and 29- a1so slope transversely'from the keel line outwcrdly and upwardly sides of the boat. In Figure 5 is shcfniiithe-Etransverse inclination given thegjfront sections23 and 24 and in F gure 6 the inclinationgitenthe sections 28 and 29 is clearly illustrated.

The boat. is relievedof an longitudinally continuousksel and inste 'a' small metal keel 30 is protidedmpon the rearmost portion of the front bottom section iust in advanes 01. the step 28 while a similar'li'sel 31 is carried by the real-most central part "of the rear bottom section at approxunntely the stern of the boat, this keel 31 being raised above the intermediate keel 30 because of the step ing of the bottom sections. Both heels are 'ort'in length andhave inwater; The rear bottomsection is also pro; vided withlateral balancingkeels 32 and 33 similar to the keel 31' and being located at the'outer edges of the rear bottom portions 28 and 29 and consequently with respect to the keel 31.

. The engine 8 is supported upon and and intermediate standards 34 and 35 which are reinforced by diagonal crossed braces 36 and 37 intersecting at approximately the center Y of the intermediate standard 35 and being riveted, welded or otherwise secured thereto. The outer ends of the crossed braces 36 and 37 are secured respectively to the upper and lower 'ends of the. end standards 34. A top rail 38 connects the up or ends of the standards and the lower en s of the several standards aresecured appropriately to the upper projectin edges of the timbers 10 Iaiid 1 which as beibre stated extend above the rear deck 12. The intermediate standards 35 are placed slightly forwardly of the rear section of the bottom in ordcr that the center of gravity may cause the boat to assume a proper position in the water withthe bow slightly raised. The weight of the cargo and passengers is also forwardly of the motor stand so that the motor must be placed forwardly to take care of this additiohal weight. Moreover the propulsive force of the pro eller 9 will tend to drive the how downwar ly into the water and the weight of the motor and its position upon the relatively shallow fiat bottomed hull compensetes for this action.

'cr so that theouter edges oi the bot slightly raised assess-c provided, well lqncwn controls accessible ta he: eperator occupying the seat 1% in the cock pit. The motor drives the propeller 9 which reacts against the surrounding air and In operation motor is started and is drives the boat. Inasmuch as the body takes a very light draft, the air propeller on? -wi be capable of driving it at great speed and as the speed increases the boat will tend to rise pro rtionately out of the water so that the skin friction will be reduced in ratie to the speed permitting of the attainment of the verg high speed. Moreover the disposition of t e weight of the motor with reference to the character and formation of the double flat bottom section admits of: liftin the bow of the boat and in, tact substantia y the entire boat from the water with only the two heels 30 and 31 and the rudder being, immersed in the water during the hi%hest speed of theboat.

he inclination given both bottom sections with the position of the motor prevents the how being driven out as won (1 otherwise occur from the'tendency developed by the propeller 9. The step 22 admits air and v tends to break any vacuum that would occur clined outen'endst olassist in; dividing the upon the bottom of the boat and this is also assisted by the lateral inclination of the sectend to raise the boat when driven forwardly "and the fiat character of the hositogether tions which assists in raising the bottom or? I the boat as itgathers speed It IS obvious that various changes and mod ifications may he made in the details or construction and design of the above specifically described embodiment of this invcrg;

tion without departing from the spirit thereof, such changes and modifications being restricted onlyby "the scope of-the iollowing claims.

'Whatis claimed is:- 1 '1. A speed boat comprisinga hull having a substantially ilatbottom made up of sections sic ped one above another, the sections being s oped from front downwardly to stern and being inclined laterally from the keel line in an outwardly and upper direction, short heels carried by the rear portions of the front and rear sections, said front section being curved at its forward end and curved to the bow-oi the boat, and a motor and propeller-erected at an elevation above substantially the intermediate portion of the rear section of the bottom.

2. A speed boat comprising a hull of relatively short yet wide surface area made up in two sections, the rear section being stepped above the plane of the front section, each section composed of half portions inclined from the keel line outwardly and upwardly in lateral directions and both said point atthe bow downwardiy toward the rear portion and having convergent and curved forward edges, iongitndinni timbers to opposite sides of the longitudinal center line of the boat above the bottom sections, on engine frame mounted on said timbers substantially midway of the bottom section,

and an air propeller driven by said engine.

3. A speed boat comprising a hull of relatively short yet Wide surface arse made up in two sections, the rear section. being stepped above the plane of the front section, each section composed of half portions inclined from the k'eel line outwardly and iipnnrdly in lateral directions and both said v sections inciining from their forward ends ,front section being! curved from the high point at the bow downwardly toward the rear portion and having convergent and curved forward edgesficlosed front and rear" decks on the hull with an open cock pit therebctween, longitudinal .tinihers placed on end parallel with and to opposite sides of the center line of the boot, said timbers extendiiig the fnli length of the hull and beneath the front deck, but projecting above the rear deck, on engine freme mounted uponthe timbers substantially-midway of the rear section, an engine and a propeller supported thereon. 4'. A specdhoat compr s ng-{hon of relatiyely short yet wide surface area ma denup tion and havingconvergcnt and curved for-v ward edges, and front and rear closed decks respectively above the two bottom sections with an open cock pit between these sections, longitudinal timbers extending substantially the length of the hull and being set on end, said timbers extending above the rear deck, an engine frame erected on the projecting boat with the center ofgravity above Substontiiilly the center of the rear portion of the bottom, an engine and a propeller carried by said frame and a pivoted rudder at the rear of the boat.

HENRY NEVVTQN SHERBURNE.

parts of the timbers at the rear part of the,

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