US1840725A - Speed boat - Google Patents

Speed boat Download PDF

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Publication number
US1840725A
US1840725A US464071A US46407130A US1840725A US 1840725 A US1840725 A US 1840725A US 464071 A US464071 A US 464071A US 46407130 A US46407130 A US 46407130A US 1840725 A US1840725 A US 1840725A
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Prior art keywords
boat
speed
water
speed boat
rollers
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Expired - Lifetime
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US464071A
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Milton S Lake
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Individual
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Priority to US464071A priority Critical patent/US1840725A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/36—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using mechanical means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

Definitions

  • This invention relates to new and useful improvements in anti-friction attachments for speed boats.
  • One object of the invention is to provide friction eliminating means for the second step of a speed boat whereby less resistance will he offered to the forward movement of the boat when the latter is riding on its second step at high speed.
  • a particular object of the invention is to provide transverse rollers, each extending substantially the entire width of the bottom of the boat and spaced in such close relation as to provide substantially no space therebetween except for'olearance whereby the entire surface presented to the water will revolve.
  • Another object of the invention is to arrange the forward rollers on the second step so as to project below the heel of the first step so as totake the forward thrust or impact and thus accelerate the rate of speed at which the boat moves through the water.
  • Figure 1 is a side elevation of a speed boat having mounted thereon an attachment con structed in accordance with the invention.
  • Figure 2 is a perspective view showing the mounting of the rollers on the boat
  • Figure 3 is a transverse vertical sectional View taken on line 3-3 of Figure 1,
  • Figure 6 is a detailed sectional view of the Figure 4c is a partial longitudinal sectional Figure 5 1s a view slmilar to Figures, showing a modified form of rollermounting7 'of the bottom of the second step, as best shown in Figure 2.
  • the ends 15 of each roller. are-reduced and are ournaled inpballebearings 16; iof bearinghangers 17 which are'secured to and depend from the sides of the boat.
  • the forward roller 14 is positioned directly behind a heel 18 which is formed beexcept for clearance so.that the entire surface presented to the water at a high rate of H speed ofthe boat will revolve. In this manner less resistance is offered to the forward movement of the boat when the latter is riding on its second step and the rate of speed at which the boat movesthrough the water is accelerated.
  • a boat hull including a bottom surface comprising a relatively smooth forward portion adapted to make sliding contact with the water underthe boat when the .boat is propelled relatively slowly, and a second porits and alterations,-may be made within the adapted to make rolling contact with the water.
  • a boat hull including a two step bottom surface, the forward step being relatively smooth and adapted to make sliding contact with the water, and a plurality of freely rotatable transverse rollers mounted.
  • the forward roller in tandem arrangement on the rear step and adapted to make rolling contact with the water, the forward roller being positioned immediately behind the heel of the forward step and depending slightly below the level of the forward step.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Escalators And Moving Walkways (AREA)

Description

Jan. 12, 1932. I I s. LAKE 1,840,725
SPEED BOAT Filed June 26, 1930 M7220 Lake Patented Jan. 12, 1932 MILTONVS. LAKE, or DALLAS, TEXA$ 1 SPEED BoAr Application filed June as, 1930. Serial irog ieiml.
This invention relates to new and useful improvements in anti-friction attachments for speed boats.
One object of the inventionis to provide friction eliminating means for the second step of a speed boat whereby less resistance will he offered to the forward movement of the boat when the latter is riding on its second step at high speed.
A particular object of the invention is to provide transverse rollers, each extending substantially the entire width of the bottom of the boat and spaced in such close relation as to provide substantially no space therebetween except for'olearance whereby the entire surface presented to the water will revolve. i Another object of the invention is to arrange the forward rollers on the second step so as to project below the heel of the first step so as totake the forward thrust or impact and thus accelerate the rate of speed at which the boat moves through the water.
A construction designed to carry out the invention will be hereinafter described together with other features of the invention.
The invention will be more readily understood from a reading of the following specification and by reference to the accompanyingdrawings in which an example of the invention is shown, and wherein:
Figure 1 is a side elevation of a speed boat having mounted thereon an attachment con structed in accordance with the invention.
Figure 2 is a perspective view showing the mounting of the rollers on the boat,
Figure 3 is a transverse vertical sectional View taken on line 3-3 of Figure 1,
view taken on line 44 of Figure 3,
and
Figure 6 is a detailed sectional view of the Figure 4c is a partial longitudinal sectional Figure 5 1s a view slmilar to Figures, showing a modified form of rollermounting7 'of the bottom of the second step, as best shown in Figure 2. As shown in Figure; 6 the ends 15 of each roller. are-reduced and are ournaled inpballebearings 16; iof bearinghangers 17 which are'secured to and depend from the sides of the boat.
The forward roller 14 is positioned directly behind a heel 18 which is formed beexcept for clearance so.that the entire surface presented to the water at a high rate of H speed ofthe boat will revolve. In this manner less resistance is offered to the forward movement of the boat when the latter is riding on its second step and the rate of speed at which the boat movesthrough the water is accelerated.
It is pointed out that asthe boat increases its speed' the water will become more solid and with the rollers taking the forward thrust orimpact, they will ride upon the water and so lessen to a great extent the drag of the boat.
In Figure 5 I have shown a modified for of roller mounting in which the bottom 19 of the boat is corrugated to conform to the rollers so as to provide substantially no space therebetween except for clearance.
Various changes in the size and shape of the different parts, as well as modifications scope of the appended claims.
What I claim, is: 1. A boat hull including a bottom surface comprising a relatively smooth forward portion adapted to make sliding contact with the water underthe boat when the .boat is propelled relatively slowly, and a second porits and alterations,-may be made within the adapted to make rolling contact with the water.
2. A boat hull as claimed in claim 1, in which the second portion extends over all of the area of the bottom which is adapted to contact with the Water when the boat is propelled at relatively high speed.
3. A boat hull including a two step bottom surface, the forward step being relatively smooth and adapted to make sliding contact with the water, and a plurality of freely rotatable transverse rollers mounted.
in tandem arrangement on the rear step and adapted to make rolling contact with the water, the forward roller being positioned immediately behind the heel of the forward step and depending slightly below the level of the forward step.
In testimony whereof, I affix my signature.
MILTON S. LAKE.
US464071A 1930-06-26 1930-06-26 Speed boat Expired - Lifetime US1840725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US464071A US1840725A (en) 1930-06-26 1930-06-26 Speed boat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US464071A US1840725A (en) 1930-06-26 1930-06-26 Speed boat

Publications (1)

Publication Number Publication Date
US1840725A true US1840725A (en) 1932-01-12

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US464071A Expired - Lifetime US1840725A (en) 1930-06-26 1930-06-26 Speed boat

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524938A (en) * 1946-06-22 1950-10-10 Jr John O Smith Boat having a buoyant propeller
US6116176A (en) * 1999-08-17 2000-09-12 Jones; Craig S. Drag reduction assembly for use with a boat hull
US20050115485A1 (en) * 2002-02-12 2005-06-02 Felice Zadra System for improving the manoeuvrability of a boat''s hull and for reducing its friction with water
US20080214070A1 (en) * 2004-10-26 2008-09-04 Nam Soo Park Acceleration System For Link Belt-Mounted Ship
WO2010035298A1 (en) * 2008-09-25 2010-04-01 Antonio Amato Boat the bottom of which is fitted with sets of rollers for conversion of friction into dynamic thrust

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524938A (en) * 1946-06-22 1950-10-10 Jr John O Smith Boat having a buoyant propeller
US6116176A (en) * 1999-08-17 2000-09-12 Jones; Craig S. Drag reduction assembly for use with a boat hull
US20050115485A1 (en) * 2002-02-12 2005-06-02 Felice Zadra System for improving the manoeuvrability of a boat''s hull and for reducing its friction with water
US20080214070A1 (en) * 2004-10-26 2008-09-04 Nam Soo Park Acceleration System For Link Belt-Mounted Ship
US7540249B2 (en) * 2004-10-26 2009-06-02 Nam Soo Park Acceleration system for link belt-mounted ship
WO2010035298A1 (en) * 2008-09-25 2010-04-01 Antonio Amato Boat the bottom of which is fitted with sets of rollers for conversion of friction into dynamic thrust

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