US3903833A - Thrust producing drive mechanism for watercrafts - Google Patents

Thrust producing drive mechanism for watercrafts Download PDF

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Publication number
US3903833A
US3903833A US346094A US34609473A US3903833A US 3903833 A US3903833 A US 3903833A US 346094 A US346094 A US 346094A US 34609473 A US34609473 A US 34609473A US 3903833 A US3903833 A US 3903833A
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US
United States
Prior art keywords
propeller
shaped elbow
drive
drive mechanism
watercraft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US346094A
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English (en)
Inventor
Siegfried Lais
Reinhold Reuter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schottel GmbH and Co KG
Original Assignee
Schottel GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schottel GmbH and Co KG filed Critical Schottel GmbH and Co KG
Application granted granted Critical
Publication of US3903833A publication Critical patent/US3903833A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/46—Steering or dynamic anchoring by jets or by rudders carrying jets

Definitions

  • ABSTRACT A thrust producing mechanism for watercraft having a curved tunnel secured to the watercraft and a propeller mounted therein and adapted to drive a stream of water from a generally vertically aligned direction to a generally horizontally aligned direction to effect either a lateral control of the watercraft or a longitudinal control of the watercraft.
  • the basic purpose of the invention is to produce a drive mechanism for watercrafts which is suitable for shallow moving ships having a small depth of submergence.
  • the basic purpose of the invention is attained by supporting the thrust producing mechanism, for example a propeller, in a curved tunnel (elbow) which diverts a substantially vertically directed stream of water at a considerable angle, for example into a substantially horizontal direction.
  • a flat construction and a high efficiency are obtained in such a construction in which the propeller or propellers is or are arranged having a substantially vertical axis of rotation.
  • the invention is used in such a manner that, for driving the watercraft, the elbow diverts from the bottom of the watercraft a sub stantially vertical stream of water into a substantially horizontally directed stream of water opposite to the direction of travel of the watercraft, for example rear wardly.
  • the invention is further developed, for the purpose of steering the watercraft, by arranging the elbow to be pivotable about a substantially vertical axis.
  • the elbow is arranged so that it does not project below the base of the watercraft. It is thereby advantageous if at least two oppositely positioned tunnels are arranged in the watercraft which, for example, open outwardly on oppositely positioned sides of the watercraft and that an elbow is pivotably arranged therebetween, whereby said tunnels operate corresponding to the known lateral thrust rudders. On the other side, the tunnels may also be directed forwardly and backwardly to thus serve as the drive for forward and backward travel of the watercraft.
  • a combination of these structures may also be advantageous wherein for example, four tunnels are provided and have therebetween a drive mechanism according to the invention which is pivotably arranged.
  • the efficiency of the drive mechanism of the invention can be improved by providing one or several guide vanes in the elbow.
  • the efficiency of the drive unit of the invention is also increased if the elbow is constructed as a nozzle.
  • the thrust producing mechanism for example the propeller or the propellers, are reversible.
  • An advantage of the unit of the invention is that the efficiency is equally good in each thrust direction. Compared with rudder propellers, the invention has yet the advantage that underwater transmission is not required. Compared with the lateral thrust units, the invention has the further advantage that the mechanism of the invention can also be used for the forward thrust. A special operation of flaps or the like is not necessary.
  • a substantially vertically directed stream of water is diverted into a substantially horizontally directed stream, this includes all embodiments in which the water is sucked from the bottom of the ship or through the bottom of the ship and is diverted to produce a lateral or longitudinally directed thrust.
  • FIG. 1 schematically illustrates a portion of a watercraft having a drive mechanism according to the invention.
  • FIG. 2 is a schematic cross-sectional view of the lower part of a watercraft having a drive mechanism according to the invention.
  • FIG. 3 illustrates schematically in an enlarged scale a drive mechanism of the invention without a reconstructed watercraft.
  • FIG. 1, 1 identifies a part ofa ship which is flat going, has a shallow depth, namely the depth from the waterline 2 to the base of the ship 3 is small.
  • the bottom of the hull has, for example, a trough 4 or the like formed therein adjacent the stern and which increases in depth rearwardly of the ship so that a drive mechanism 5 of the invention can be positioned in said trough and not extend below the base of the ship.
  • the hull is constructed in such -a manner that a stream of water can exit substantially unhindered backwardly and/or, if desired, to all sides.
  • the upwardly inclined bottom wall of the trough 4 on the ship transfers into the base of the ship so that also in this direction, that is, for example, forwardly, little resistance opposes a stream of water.
  • the drive mechanism ofthe invention consists substantially in a elbow 6 in which a propeller 7 or several propellers are supported rotatably about a vertical axis.
  • the propeller or the propellers can also be replaced by other water-conveying mechanisms.
  • the elbow diverts substantially vertically sucked-in waters into a substantially horizontal direction.
  • the elbow containing the propeller or the propellers is supported rotatably in the ship.
  • a motor 8 is provided for driving the propeller, which propeller is driven by common and known power transmitting means, for example, a coupling and/or a change-speed gearing provided in the coupling housing 9, a cardan shaft 10, an angle drive 12, 13 (FIG. 3) which is supported in a gear box 11 by known means and by a vertically supported propeller shaft 14.
  • a propeller 7 is mounted at the lower end of the propeller shaft.
  • the gear box 11 is supported stationarily in the ship.
  • FIG. 2 is a lateral cross section of a ship comprising a drive mechanism of the invention.
  • the abovedescribed elbow is shown in a pivoted position in the trough.
  • a tunnel l5, 16 is provided laterally of the trough on both sides in the ships hull, which tunnels each guide a stream of water received by the elbow selectively to the side to cause a control effect.
  • the axis of the tunnels are slightly downwardly inclined in the outward direction in order to take away from the stream of water a possibly interfering effect.
  • FIG. 3 illustrates a cross-section of a drive unit according to the invention.
  • the propeller 7 having a vertical axis is supported in the vertical portion of the elbow 6, namely on a propeller shaft 14, which is housed in a bearing sleeve 18 extending through the elbow.
  • a neck 19 is secured, for example by screws, on the elbow, which neck is supported rotatably but not longitudinally movably in the gear box 11 or a support pipe 11a connected therewith.
  • a spur bevel gear 20, which is engaged by a pinion 21, is supported approximately in horizontal plane positioned in the gear box 11 and is secured on the upper part of the neck.
  • the control drive which comes from the rudder stand is connected to the pinion in approximately the manner as is known from steerable propellers.
  • the elbow can thus be rotated and the thrust can be directed into a desired direction for controlling the ship.
  • the propeller drive shaft 14 extends through the neck 19.
  • the upper end of the drive shaft 14 terminates above the spur bevel gear 20 and a bevel gear 13 of the aforementioned angle drive is secured thereto.
  • the propeller 7 is thus driven from the motor 8 through the already mentioned coupling and- /or the change-speed gearing, the cardan shaft 10, the angle drive consisting of a drive bevel gear and a driven bevel gear and driven propeller shaft 14.
  • the elbow is constructed, from the standpoint of flow characteristics, favorably and advantageously as a nozzle, that is, the inlet opening is larger than the outlet opening. Turbulences in the zone of the elbow are avoided or eased by one or several guide vanes 22.
  • the inlet opening and/or outlet opening are flared or constructed slightly funnelshaped.
  • Tunnels are advantageously provided for guiding the water and following the curvature of the elbow as illustrated in FIG. 2.
  • the water can also be directed freely as illustrated in FIG. 1 for the forward and backward travel.
  • the elbow is supported on one side.
  • a support on two sides or a support supplementing the illustrated support can be advantageous.
  • several thrust producing elbows can be provided, for example, one or several elbows at the stern and/or at the bow or also, for example, one elbow at each corner of the watercraft.
  • the motor and, if desired, the transmission can also be arranged axially or parallel to the propellar shaft.
  • An advantageous embodiment can also consist of an independent attachment in the form of an elbow with the installations and attachments, the drives for the propeller and, if desired, adapted for swivel movement and a housing which contains a tunnel or the like surrounding the elbow.
  • the pitch of the blades 7 of the propeller or the propellers is adjustable. It is believed that a further description thereof is not necessary.
  • the propeller drive for the propeller is reversible through a reversing gear.
  • a thrust-producing drive mechanism for driving and controlling of watercrafts comprising:
  • an L-shaped elbow having a vertically oriented first part which has at its lower end an inlet opening for a stream of water, said inlet opening being approximately equal to and slightly less than the diameter of said downwardly opening recess and a horizontally oriented second part arranged at the upper end of said first part, said second part extending radially of said first part beyond the radius of said first part and having at its end an outlet opening for a stream of water opening outwardly on a plane above the plane of said inlet opening and in a horizontal discharge direction, said inlet opening being larger than said outlet opening to thereby define a nozzle at said outlet opening and a smooth curved transfer section connected between said first and second parts, said L-shaped elbow being located entirely within the contour of said downwardly opening recess, said plane of said inlet opening being positioned closely above the plane of the bottom of said watercraft;
  • propeller means defining at least one propeller mounted for rotation about a vertical axis and drive means therefor, said propeller means being mounted inside and connected to said inlet opening of said L-shaped elbow adjacent said lower end thereof, said propeller means conveying said water through said L- shaped elbow from a vertical suction direction through said smooth curved transfer section to said horizontal discharge direction.
  • a drive mechanism according to claim 1, wherein the hull of said watercraft includes means defining at least one outwardly leading channel which extends from said recess to an exterior surface of said watercraft;
  • a drive mechanism according to claim 1, wherein said drive means for said propeller is mounted in said hull separate from said L-shaped elbow.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Gear Transmission (AREA)
US346094A 1972-04-05 1973-03-29 Thrust producing drive mechanism for watercrafts Expired - Lifetime US3903833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2216344A DE2216344C3 (de) 1972-04-05 1972-04-05 Wasserstrahlantrieb zum Antrieb und Steuern von Wasserfahrzeugen

Publications (1)

Publication Number Publication Date
US3903833A true US3903833A (en) 1975-09-09

Family

ID=5841056

Family Applications (1)

Application Number Title Priority Date Filing Date
US346094A Expired - Lifetime US3903833A (en) 1972-04-05 1973-03-29 Thrust producing drive mechanism for watercrafts

Country Status (12)

Country Link
US (1) US3903833A (xx)
AT (1) AT331136B (xx)
BE (1) BE797117A (xx)
CH (1) CH582599A5 (xx)
DE (1) DE2216344C3 (xx)
DK (1) DK155582C (xx)
FI (1) FI54891C (xx)
FR (1) FR2179182B1 (xx)
GB (1) GB1378120A (xx)
NL (1) NL7304501A (xx)
NO (1) NO133265C (xx)
SE (1) SE393077B (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147125A (en) * 1976-07-26 1979-04-03 Elliott Turbomachinery Limited Steering and propulsion means for ships or other vessels
DE2812293A1 (de) 1978-03-21 1979-10-04 Schottel Werft Wasserstrahlantrieb zum antrieb und steuern von wasserfahrzeugen
US4278431A (en) * 1977-12-22 1981-07-14 Schottel-Werft. Josef Becker Gmbh & Co. Kg Hydro-jet propulsion device for driving and controlling of particularly flat-bottomed watercrafts
US4735045A (en) * 1983-03-04 1988-04-05 Innerspace Corporation Limited discharge bidirectional thruster and method of operation
US5501072A (en) * 1994-08-29 1996-03-26 Pumpeller, Inc. Combined centrifugal and paddle-wheel side thruster for boats
US6009822A (en) * 1999-03-29 2000-01-04 Aron; Douglas A. Bow or stern thruster
NL1030011C2 (nl) * 2005-09-22 2007-03-26 Kalkman Holding B V D Boegschroefinrichting met meerdere uitlaatkanalen.

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2308834A (en) * 1995-08-24 1997-07-09 Gordon William Walke Watercraft Propulsion Apparatus
RU2555396C1 (ru) * 2014-05-05 2015-07-10 Общество с ограниченной ответственностью "ДМ Технолоджи" Двигательно-движительное водометное устройство

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3098464A (en) * 1962-04-10 1963-07-23 Barney B Holland Propulsion unit for shallow draft boats or the like
US3185122A (en) * 1963-03-30 1965-05-25 Pleuger Friedrich Wilhelm Propulsion unit for watercraft

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR398082A (fr) * 1908-12-16 1909-05-26 Jean Jacques Auguste Mathe Propulseur nautique
DE1094141B (de) * 1958-10-14 1960-12-01 Inst Schiffbau Steuervorrichtung mit Reaktionswirkung
DE1195626B (de) * 1964-09-15 1965-06-24 Ferd Clausen K G Wasserstrahltrieb zum Antreiben und Steuern eines Schiffes od. dgl.
FR1487790A (fr) * 1966-07-26 1967-07-07 Tamco Ltd Pompe pousseur de proue
FR1581704A (xx) * 1968-07-08 1969-09-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3098464A (en) * 1962-04-10 1963-07-23 Barney B Holland Propulsion unit for shallow draft boats or the like
US3185122A (en) * 1963-03-30 1965-05-25 Pleuger Friedrich Wilhelm Propulsion unit for watercraft

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147125A (en) * 1976-07-26 1979-04-03 Elliott Turbomachinery Limited Steering and propulsion means for ships or other vessels
DK155584B (da) * 1976-07-26 1989-04-24 Elliott Turbo Styre- og fremdrivningsaggregat til et fartoej
US4278431A (en) * 1977-12-22 1981-07-14 Schottel-Werft. Josef Becker Gmbh & Co. Kg Hydro-jet propulsion device for driving and controlling of particularly flat-bottomed watercrafts
DE2812293A1 (de) 1978-03-21 1979-10-04 Schottel Werft Wasserstrahlantrieb zum antrieb und steuern von wasserfahrzeugen
US4735045A (en) * 1983-03-04 1988-04-05 Innerspace Corporation Limited discharge bidirectional thruster and method of operation
US5501072A (en) * 1994-08-29 1996-03-26 Pumpeller, Inc. Combined centrifugal and paddle-wheel side thruster for boats
US6009822A (en) * 1999-03-29 2000-01-04 Aron; Douglas A. Bow or stern thruster
NL1030011C2 (nl) * 2005-09-22 2007-03-26 Kalkman Holding B V D Boegschroefinrichting met meerdere uitlaatkanalen.

Also Published As

Publication number Publication date
FI54891B (fi) 1978-12-29
GB1378120A (en) 1974-12-18
FI54891C (fi) 1979-04-10
FR2179182A1 (xx) 1973-11-16
DE2216344C3 (de) 1974-10-03
DK155582B (da) 1989-04-24
ATA185373A (de) 1975-10-15
NO133265B (xx) 1975-12-29
DK155582C (da) 1989-09-11
CH582599A5 (xx) 1976-12-15
BE797117A (fr) 1973-07-16
DE2216344A1 (de) 1973-10-18
AT331136B (de) 1976-08-10
DE2216344B2 (de) 1974-02-14
FR2179182B1 (xx) 1975-12-26
NL7304501A (xx) 1973-10-09
SE393077B (sv) 1977-05-02
NO133265C (xx) 1976-04-07

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