US2251621A - Hull for boats - Google Patents

Hull for boats Download PDF

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Publication number
US2251621A
US2251621A US249029A US24902939A US2251621A US 2251621 A US2251621 A US 2251621A US 249029 A US249029 A US 249029A US 24902939 A US24902939 A US 24902939A US 2251621 A US2251621 A US 2251621A
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hull
sections
boat
section
boats
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US249029A
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Albert W W Van Hoorn
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00Hulls characterised by their structure or component parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/16Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
    • B63B1/18Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
    • B63B1/20Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface
    • B63B2001/202Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type having more than one planing surface divided by transverse steps

Definitions

  • the present invention relates to a boat con- .struction and hullshape, more particularly to that type known as express cruisers and speed boats.
  • Another object of the invention is the provisionof 'a boat construction which will. permit the retention of certain desirable features, such as a round bottom, that make for good designing from the-standpoint of forward motion ofa speed boat, but which'must be compromisedor eliminated in order to secure reasonablesafety in turning at high speeds.
  • Another object is the provisionof a boat construction novel in form, reliable and efficient in functioning, and simple and inexpensive to manufacture.
  • the invention consists in certain novelfeatures of construction and arrangement of parts as will be hereafter more fully described, and illustrated in the accompanying drawing, which discloses the preferred embodiment of the invention.
  • Figure 1 is a side elevation of a hull embodying the invention.
  • Figure 2 is a center line cross section of the complete hull.
  • Figure 3 is a half cross section of the complete hull in the fore part thereof.
  • the hull is provided with a plurality of surfaces arranged longitudinally and. offset outwardly with respect to the bottom or bilge section having the usual keel. These surfaces extend preferably from stem to stern and substantially parallel with the keel. Contiguous with these offset surfaces are surfaces or sections forming :the sides of the boat- I .7
  • the hull may be-constructed asa 'single section having the contours specified herein but the inven- ';tion lends itself particularly to construction in accordance with my co-pending application Serial #238,326, filed November 2, '1938, for Process of constructing boats, and. on this account I shall more particularly describe the invention in that form.
  • the hull surface is formed of two bottom-or central portions I and -2 meeting I .at the keel .line 3 and two side por- "tion's Land 5 which are offset orstaggered outwardlyfrom the central portions to provide longitudinal surfaces 6 .and .1 substantially. transverse to :the body of the hull and longitudinal of the boat;
  • these separate surfaces are made as'separatese'ctionsof the huh I, 2,1 and 5.
  • These sections are each constructed with a longitudinal rr'ieniber, running the length of the section on eachof its longitudinal edges, and with rib sections extending transversely between the longitudinal members. These members'and rib sections form a frame to which the skin is attached. The various sections are fastened together to form the complete hull by bolting together the adjacent longitudinal members together. All of this is fully described in my copending application Serial Number 238,326.
  • the sections 1, 2, 4 and 5 are all convex in cross section to permit of easy turning, but toward the bow as seen in Figure 3, the sections 4 and 5 will preferably be concave, in accordance with good hull construction.
  • the keel 3 itself may be formed by fastening together the central longitudinal members 8 and 9 of the two bottom sections by bolts 31a, and the central sections may be fastened to the side sections by bolting together the longitudinal members In and ll of the sections 45 to the adjacent longitudinal members l2 and I3 of the central sections 1 and 2.
  • a hull of the type having progressively curved sections throughout, comprising a plurality of sections on each side of the vertical central plane, each section comprising a complete independent unit extending in a direction from stem to stern and adjacent edges of said sections terminating in a common plane substantially parallel to the center line of the hull, the upper of said sections being offset outwardly to provide a longitudinally extending downwardly and inwardly facing surface to stabilize the hull.
  • a hull of the type having progressively curved sections throughout, comprising a plurality of sections on each side of the vertical central plane, each section comprising a complete independent unit extending in a direction from stem to stern, the lower of said sections having a longitudinal stringer along its upper edge and the upper of said sections having a longitudinal stringer on its lower edge adapted to engage said first mentioned stringer throughout its length along a plane substantially parallel to the center line, said upper section being offset outwardly from said lower section and said last mentioned stringer being of materially greater width measured transverse to the surface of the hull, whereby when said stringers are attached together to form the hull, there is provided a longitudinally extending and downwardly and inwardly facing surface to stabilize the hull.
  • a hull of the type having progressively curved sections throughout, said skeleton comprising a plurality of sections on each side of the vertical center plane of the hull extending in the direction from stem to stern, each comprising a self-supporting frame, each of said sections having a longitudinal stringer curved to correspond to the curvature of the hull, on each edge thereof, and a plurality of rib sections also curved to correspond to the curvature of the hull extending between and firmly attached to said stringers to form with said stringers a self-supporting hull section, the adjacent stringer of the hull sections on each side of the said center plane lying in a common plane parallel to the center line of the hull and being firmly attached together to form said hull, the upper of said adjacent stringers being of greater width transverse to the surface of the hull, whereby when said sections are joined said upper section will extend beyond the lower to provide a longitudinally extending downwardly and inwardly facing surface to stabilize the hull.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)

Description

1941- A. w. w. VAN HOORN HULL FOR BOATS Filed Jan. 5, 1939 .M 2 T# M N M m WW w l A M W MB A Patented Aug. 5, 1941 n UNITED PATENT f OFFICE 2,251,621 HULL FORBGATS Albert van Hoorn, 'Holly0ak,1Del. Application January 2, 1939, serial No. 249,029
3 Claims.
The present invention relates to a boat con- .struction and hullshape, more particularly to that type known as express cruisers and speed boats.
It is essential that boats of that character-may be turned at high speed without cap'sizing or shipping water, and with a minimum of slippage. It is therefore an object of the invention to provide a boat constructionwhich will reduce such hazards to a minimum;
Another object of the invention is the provisionof 'a boat construction which will. permit the retention of certain desirable features, such as a round bottom, that make for good designing from the-standpoint of forward motion ofa speed boat, but which'must be compromisedor eliminated in order to secure reasonablesafety in turning at high speeds.
Another object is the provisionof a boat construction novel in form, reliable and efficient in functioning, and simple and inexpensive to manufacture.
With these and other objects in View, the invention consists in certain novelfeatures of construction and arrangement of parts as will be hereafter more fully described, and illustrated in the accompanying drawing, which discloses the preferred embodiment of the invention.
Referring to the accompanying drawing:
Figure 1 is a side elevation of a hull embodying the invention.
Figure 2 is a center line cross section of the complete hull.
Figure 3 is a half cross section of the complete hull in the fore part thereof.
In high speed power boats, the tendency of a rounded hull is to squat in the water as one reaches speed, the bow going up and the stern going down in the water. To overcome this there has been a tendency to flatten out the V shape of the rear of the body so that at the stern the boat approaches being completely fiat giving an aqua-planing effect. This is very helpful in going ahead but it makes the boat dangerous in making a turn because the stern end of the boat will not swish around but instead its relatively flat edges hit the side of the water and tend to overturn the boat.
In accordance with the invention, to overcome this difficulty, the hull is provided with a plurality of surfaces arranged longitudinally and. offset outwardly with respect to the bottom or bilge section having the usual keel. These surfaces extend preferably from stem to stern and substantially parallel with the keel. Contiguous with these offset surfaces are surfaces or sections forming :the sides of the boat- I .7
Within the broad'scope of this invention the hull may be-constructed asa 'single section having the contours specified herein but the inven- ';tion lends itself particularly to construction in accordance with my co-pending application Serial #238,326, filed November 2, '1938, for Process of constructing boats, and. on this account I shall more particularly describe the invention in that form.
' .Referring' tcithe' drawing the hull surface is formed of two bottom-or central portions I and -2 meeting I .at the keel .line 3 and two side por- "tion's Land 5 which are offset orstaggered outwardlyfrom the central portions to provide longitudinal surfaces 6 .and .1 substantially. transverse to :the body of the hull and longitudinal of the boat;
When the hull. is constructed in accordance with the invention o'fmy previous application Labove. referred to, these separate surfaces are made as'separatese'ctionsof the huh I, 2,1 and 5. These sections are each constructed with a longitudinal rr'ieniber, running the length of the section on eachof its longitudinal edges, and with rib sections extending transversely between the longitudinal members. These members'and rib sections form a frame to which the skin is attached. The various sections are fastened together to form the complete hull by bolting together the adjacent longitudinal members together. All of this is fully described in my copending application Serial Number 238,326.
Toward the stern, as will be seen from Figure 2, the sections 1, 2, 4 and 5 are all convex in cross section to permit of easy turning, but toward the bow as seen in Figure 3, the sections 4 and 5 will preferably be concave, in accordance with good hull construction.
Thus the keel 3 itself may be formed by fastening together the central longitudinal members 8 and 9 of the two bottom sections by bolts 31a, and the central sections may be fastened to the side sections by bolting together the longitudinal members In and ll of the sections 45 to the adjacent longitudinal members l2 and I3 of the central sections 1 and 2.
The amount of the overhang provided by these surfaces I0ll will vary with the design of the hull and it will vary from bow to stern of the boat. In some respects these surfaces lO-l I, at the bow of the boat, play a different part from the same surfaces at the rear.
During motion of the boat when the bow is lifted out of the water, the surfaces l0 and H hold the spray and bow wave down, while that portion of the surfaces l8 and H which is under the water provides a pocket between them and the central section of the hull holding the main slip stream of the water beneath the boat. At the same time this construction offering a minimum resistance to the sideward movement of the boat during turning, thus permitting turning at high speed without danger of capsizing.
It will thus be seen that if the hull is forced sideways through the water to the left, as seen in Figure 2, the sections I and 4 afford reduced resistance because of their curved contours, while the surface II is itself in the lee of the body of the hull and thus has its own resistance reduced.
Thus by this construction I gain the advantages of a high speed hull with the ease of steering and turning more comparable to the rounded hull while at the same time the construction gives a high speed hull and holds down the spray and bow wave, thus increasing the dirigibility, efficiency, safety and comfort of the hull.
Since certain changes may be made in the above construction and different embodiments of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.
It is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.
Having described my invention, what I claim as new and desire to secure by Letters Patent is:
1. A hull of the type having progressively curved sections throughout, comprising a plurality of sections on each side of the vertical central plane, each section comprising a complete independent unit extending in a direction from stem to stern and adjacent edges of said sections terminating in a common plane substantially parallel to the center line of the hull, the upper of said sections being offset outwardly to provide a longitudinally extending downwardly and inwardly facing surface to stabilize the hull.
2. A hull of the type having progressively curved sections throughout, comprising a plurality of sections on each side of the vertical central plane, each section comprising a complete independent unit extending in a direction from stem to stern, the lower of said sections having a longitudinal stringer along its upper edge and the upper of said sections having a longitudinal stringer on its lower edge adapted to engage said first mentioned stringer throughout its length along a plane substantially parallel to the center line, said upper section being offset outwardly from said lower section and said last mentioned stringer being of materially greater width measured transverse to the surface of the hull, whereby when said stringers are attached together to form the hull, there is provided a longitudinally extending and downwardly and inwardly facing surface to stabilize the hull.
3. A hull of the type having progressively curved sections throughout, said skeleton comprising a plurality of sections on each side of the vertical center plane of the hull extending in the direction from stem to stern, each comprising a self-supporting frame, each of said sections having a longitudinal stringer curved to correspond to the curvature of the hull, on each edge thereof, and a plurality of rib sections also curved to correspond to the curvature of the hull extending between and firmly attached to said stringers to form with said stringers a self-supporting hull section, the adjacent stringer of the hull sections on each side of the said center plane lying in a common plane parallel to the center line of the hull and being firmly attached together to form said hull, the upper of said adjacent stringers being of greater width transverse to the surface of the hull, whereby when said sections are joined said upper section will extend beyond the lower to provide a longitudinally extending downwardly and inwardly facing surface to stabilize the hull.
ALBERT W. W. VAN HOORN.
US249029A 1939-01-03 1939-01-03 Hull for boats Expired - Lifetime US2251621A (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2422818A (en) * 1943-08-02 1947-06-24 Julien G Bamberger Hydroplane
US2515162A (en) * 1945-05-21 1950-07-11 Steelcraft Boats Inc Boat hull
US2554059A (en) * 1947-12-18 1951-05-22 Riesenecker Frank Boat construction
US2562372A (en) * 1947-02-01 1951-07-31 Tveter Einar Combination hunting and fishing boat
US2634698A (en) * 1941-04-21 1953-04-14 Beckerbat Ab High-speed motor boat
US3085262A (en) * 1960-07-11 1963-04-16 Howell T Plemmons Boat construction
US3105248A (en) * 1962-06-13 1963-10-01 William C Ferrell Combination outboard runabout and cabin cruiser
US3111691A (en) * 1959-06-22 1963-11-26 Luger Ormond Louis Sectional boat structure
US3203389A (en) * 1961-10-18 1965-08-31 Richard C Cale Stabilized planing hull
EP0515673A1 (en) * 1990-12-21 1992-12-02 Falcon Maritime Ventures Inc Metal plate assembly fabrication system.
US6629507B2 (en) * 2001-01-31 2003-10-07 Mark Biddison Chine system for a boat hull
US20090061702A1 (en) * 2007-09-03 2009-03-05 March J David Amphibious vehicle
US20090114141A1 (en) * 2007-11-07 2009-05-07 Chih-Hsiung Chien Double-layer boat hull structure
US20090301376A1 (en) * 2008-06-06 2009-12-10 Hoover Phillip L Planing pontoon tube

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2634698A (en) * 1941-04-21 1953-04-14 Beckerbat Ab High-speed motor boat
US2422818A (en) * 1943-08-02 1947-06-24 Julien G Bamberger Hydroplane
US2515162A (en) * 1945-05-21 1950-07-11 Steelcraft Boats Inc Boat hull
US2562372A (en) * 1947-02-01 1951-07-31 Tveter Einar Combination hunting and fishing boat
US2554059A (en) * 1947-12-18 1951-05-22 Riesenecker Frank Boat construction
US3111691A (en) * 1959-06-22 1963-11-26 Luger Ormond Louis Sectional boat structure
US3085262A (en) * 1960-07-11 1963-04-16 Howell T Plemmons Boat construction
US3203389A (en) * 1961-10-18 1965-08-31 Richard C Cale Stabilized planing hull
US3105248A (en) * 1962-06-13 1963-10-01 William C Ferrell Combination outboard runabout and cabin cruiser
EP0515673A1 (en) * 1990-12-21 1992-12-02 Falcon Maritime Ventures Inc Metal plate assembly fabrication system.
EP0515673A4 (en) * 1990-12-21 1993-04-07 Falcon Maritime Ventures, Inc. Metal plate assembly fabrication system
TR27532A (en) * 1990-12-21 1995-06-07 Falcon Maritime Ventures Lp Metal plate hardware manufacturing system.
US6629507B2 (en) * 2001-01-31 2003-10-07 Mark Biddison Chine system for a boat hull
US20090061702A1 (en) * 2007-09-03 2009-03-05 March J David Amphibious vehicle
US8221174B2 (en) * 2007-09-03 2012-07-17 March J David Amphibious vehicle
US20090114141A1 (en) * 2007-11-07 2009-05-07 Chih-Hsiung Chien Double-layer boat hull structure
US7530323B1 (en) * 2007-11-07 2009-05-12 Chih-Hsiung Chien Double-layer boat hull structure
US20090301376A1 (en) * 2008-06-06 2009-12-10 Hoover Phillip L Planing pontoon tube
US7798088B2 (en) 2008-06-06 2010-09-21 Smoker Craft, Inc. Planing pontoon tube

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