US3464380A - Auxiliary propulsion device for ships - Google Patents

Auxiliary propulsion device for ships Download PDF

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Publication number
US3464380A
US3464380A US720596A US3464380DA US3464380A US 3464380 A US3464380 A US 3464380A US 720596 A US720596 A US 720596A US 3464380D A US3464380D A US 3464380DA US 3464380 A US3464380 A US 3464380A
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United States
Prior art keywords
plate
rod
ship
propulsion device
movement
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Expired - Lifetime
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US720596A
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English (en)
Inventor
Karl Gustaf Birger Thorden
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Individual
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Individual
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    • 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
    • B63H25/42—Steering or dynamic anchoring by propulsive elements; Steering or dynamic anchoring by propellers used therefor only; Steering or dynamic anchoring by rudders carrying propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/30—Propulsive elements directly acting on water of non-rotary type
    • B63H1/36—Propulsive elements directly acting on water of non-rotary type swinging sideways, e.g. fishtail type

Definitions

  • FIG.1 AUXILIARY PROPULSION DEVICE FOR SHIPS Filed April 11, 1968 2 Sheets-Sheet l
  • the present invention is concerned with a simple device by means of which the ship can be steered in an arbitrary direction and in which the device only will require small constructional amendments of the hull and simultaneously the device in inoperative position does not cause any considerable resistance of flow.
  • the device comprises a plate pivotally connected to a reciprocating rod said plate having its pivot axis substantially at right angles to a symmetry axis of the plate so that said plate when moved by the rod can perform an oscillating movement generating a driving force on the ship, and the characterizing feature is that the pivot axis and the inflow edge of the plate are arranged on the same side of the centre of gravity of the surface of the plate, said centre being located on said symmetry axis, and that a stopper is provided between said pivot axis and said inflow edge, said stopper being joined to the plate and to a part connected to the ship, respectively, said stopper only permitting a limited oscillating movement of the plate, the length of the plate between the pivot axis and the inflow edge being so fitted that said edge abuts the shell plating of the ship in the outer dead centre of movement of the rod and the stopper is in blocking position.
  • FIGURE 1 is a schematic sectional view of an auxiliary tent 0 3,464,380 Patented Sept. 2, 1969 propulsion device
  • FIGURE 2 is a sectional view along the line 11-11 in FIGURE 1
  • FIGURES 3a-3e schematically show the device in various operation positions.
  • a case 2 is recessed which case is provided with an opening through the shell plating.
  • an operating device for elfecting a reciprocating movement of a rod 3 which operating device in the embodiment shown consists of a piston 5 movable in a cylinder 4 by alternately conveying a pressure medium into the cylinder on both sides of the piston 5 so that said piston is pressed up and down.
  • the piston 5 is connected to the rod 3 which is guided in a bearing 6 in the case 2.
  • a transverse pivot 7 which carries a pair of lugs 9 fastened to a plate 8 located outside the shell plating 1 said plate 8 being swingable on the pivot 7.
  • the rod 3 is provided with longitudinal splines 10 which are guided in corresponding grooves 11 in the inner surface of a sleeve 12 fastened to a gear 13 in mesh with a pinion 14 on a shaft 15 connected to a source of power.
  • An articulated stopper 16 is provided between the gear 13 and the plate 8 which stopper consists of a cylinder 17 connected to the gear 13 and a piston rod 18 in said cylinder connected to the plate 8 said piston rod having a limited length of movement,
  • the plate 8 is square-shaped, round or may be of some other form having at least one symmetry axis which is directed at right angles to the pivot 7.
  • the centre of gravity TP of the surface of the plate 8 and the connecting point of the rod 3 at the plate 8 are located on said symmetry axis with the connecting point at a distance from the centre of gravity TP whereas the fastening point of the stopper 16 at the plate 8 is located on the same sideas but in a greater distance from the centre of gravity.
  • the plate 8 By turning the gear 13 by means of the pinion 14 the plate 8 can be directed in any desired angle to the longitudinal direction of the ship and as the propulsion force always acts at right angles to the pivot axis of the plate 8 the ship can be displaced in any direction desired and thus ahead, astern and in any transverse direction.
  • the operating device can be modified in various manners.
  • the rod 3 performs a reciprocating movement between two definite dead centres and thereby also a geared crank mechanism can be used.
  • the source of power can be an electromotor, an internal combustion engine, a hydraulic motor or a steam engine and also other sources of power may be conceivable.
  • the efiiciency and the cost of operation are of a relatively secondary importance as the auxiliary propulsion device is in operation only during short periods.
  • the plate 8 is shown plane but it also can be of single curved or double curved form and along the side edges guide-bars can be provide for preventing flow of water from one side of the plate to the other.
  • the stopper 16 can be a rod with a catch said rod being connected to the plate 8 and said catch co-operating with a corresponding catch provided on the rotatable sleeve and the stopper can also consist of a spring or the like co-operating with a firm stop.
  • the propulsion device will operate in the described manner even without a stopping device but the movement of the plate 8 is controlled more accurately by said stopping device.
  • An auxiliary propulsion device for ships intended for maneuvring at low speed and comprising a reciprocating rod and a plate pivotally connected to said rod, said plate having its pivot axis substantially at right angles to a symmetry axis of the plate so that the plate when moved by the rod is performing an oscillating movement thereby generating a driving force on the ship, characterized in that the pivot and the inflow edge of the plate are arranged on the same side of the centre of gravity of the surface of the plate, said centre being located on said, symmetry axis, stopper means being provided between said pivot and said inflow edge, said stopper means being articulated to theplate and to a part connected to the ship, respectively, for permitting a limited oscillating movement of the plate, the length of the plate between the pivot and the inflow edge being such that said edge abuts the shell plating of the ship in the outer dead centre of movement of the rod and the stopper means is in blocking position.
  • a propulsion device as claimed in claim 1 characterized in turning means for adjusting the pivot in various angles to the longitudinal direction of the ship.
  • a propulsion device as claimed in claim 1 characterized in that guide-bars are provided along the side edges of the plate for preventing flow of water from one side of the plate to the other.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Transmission Devices (AREA)
  • Actuator (AREA)
US720596A 1967-04-19 1968-04-11 Auxiliary propulsion device for ships Expired - Lifetime US3464380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE05467/67A SE354455B (enrdf_load_stackoverflow) 1967-04-19 1967-04-19

Publications (1)

Publication Number Publication Date
US3464380A true US3464380A (en) 1969-09-02

Family

ID=20266542

Family Applications (1)

Application Number Title Priority Date Filing Date
US720596A Expired - Lifetime US3464380A (en) 1967-04-19 1968-04-11 Auxiliary propulsion device for ships

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Country Link
US (1) US3464380A (enrdf_load_stackoverflow)
DE (1) DE1756159A1 (enrdf_load_stackoverflow)
GB (1) GB1198165A (enrdf_load_stackoverflow)
SE (1) SE354455B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765175A (en) * 1970-12-30 1973-10-16 J Ohnaka Fluid driven propulsion and generator mechanism
US4384830A (en) * 1979-03-22 1983-05-24 Wakelin Russell R F Methods of and/or apparatus for displacing fluids
US5549491A (en) * 1992-09-29 1996-08-27 Domancic; Tomislav Fin drive for a watercraft

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979018A (en) * 1959-10-19 1961-04-11 Clarence E Birdsall Propelling and steering device for watercraft
US3307358A (en) * 1964-03-09 1967-03-07 Claude Christian Henry De Saul Device for propelling or pumping a fluid and application thereof to the propulsion of ships

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2979018A (en) * 1959-10-19 1961-04-11 Clarence E Birdsall Propelling and steering device for watercraft
US3307358A (en) * 1964-03-09 1967-03-07 Claude Christian Henry De Saul Device for propelling or pumping a fluid and application thereof to the propulsion of ships

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765175A (en) * 1970-12-30 1973-10-16 J Ohnaka Fluid driven propulsion and generator mechanism
US4384830A (en) * 1979-03-22 1983-05-24 Wakelin Russell R F Methods of and/or apparatus for displacing fluids
US5549491A (en) * 1992-09-29 1996-08-27 Domancic; Tomislav Fin drive for a watercraft

Also Published As

Publication number Publication date
SE354455B (enrdf_load_stackoverflow) 1973-03-12
DE1756159A1 (de) 1970-02-26
GB1198165A (en) 1970-07-08

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