US3826219A - Marine drive units - Google Patents

Marine drive units Download PDF

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Publication number
US3826219A
US3826219A US00270512A US27051272A US3826219A US 3826219 A US3826219 A US 3826219A US 00270512 A US00270512 A US 00270512A US 27051272 A US27051272 A US 27051272A US 3826219 A US3826219 A US 3826219A
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US
United States
Prior art keywords
shaft
casing
drive
lay shaft
lay
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
US00270512A
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English (en)
Inventor
C Nossiter
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.)
ENFIELD IND ENG Ltd
Original Assignee
ENFIELD IND ENG Ltd
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 ENFIELD IND ENG Ltd filed Critical ENFIELD IND ENG Ltd
Priority to US05/454,961 priority Critical patent/US4037558A/en
Application granted granted Critical
Publication of US3826219A publication Critical patent/US3826219A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
    • B63H20/12—Means enabling steering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B63H20/22—Transmission between propulsion power unit and propulsion element allowing movement of the propulsion element about at least a horizontal axis without disconnection of the drive, e.g. using universal joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/08—Means enabling movement of the position of the propulsion element, e.g. for trim, tilt or steering; Control of trim or tilt
    • B63H20/10—Means enabling trim or tilt, or lifting of the propulsion element when an obstruction is hit; Control of trim or tilt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H20/00—Outboard propulsion units, e.g. outboard motors or Z-drives; Arrangements thereof on vessels
    • B63H20/14—Transmission between propulsion power unit and propulsion element
    • B63H20/20—Transmission between propulsion power unit and propulsion element with provision for reverse drive

Definitions

  • ABSTRMT The mvention provides a marme drive unit of the UISI Cl. R through or ver transom drive type in the [5 l 6 power leg is pivoted on the axis of a transverse shaft at Field of Search 115/35 411 18; the heart of the drive transmission so that the power 74/404, 417 leg can tilt upwardly and rearwardly about that axis whilst the drive gears remain meshed, without utilising References Clted any universal joints.
  • This invention relates to marine vessel drive units of the known kind in which an inboard engine is coupled to the propeller by an engine shaft extending to and through (or over) the vessel transom, and having a power leg which extends generally vertically downwards to transmit drive to the propeller which is usually carried on a shaft parallel to the engine shaft, although it will be appreciated that the engine shaft could be horizontal or inclined and the propeller axis determined by the trim of the vessel and other considerations.
  • the objects of the invention are to provide simple designs which achieve or enable some or all of these movements to be accomplished, thus providing, desirably, compact and efficient units which are cheaper to manufacture and more reliable in service.
  • a marine drive unit comprises a power leg having a propeller driven via a transmission from a shaft extending transversely of the length of said leg, said leg being adapted to pivot about the axis of said shaft.
  • a marine drive unit comprises a head for mounting on the transom of a boat, a power leg depending from the head and carrying a propeller, and a drive transmission including a first shaft for extending through or over the transom, a second shaft extending up the power leg and a third shaft extending to the propeller, the first and third shafts being generally usually approximately parallel and the second shaft being generally and usually perpendicular to the other two, in which an intermediate shaft is located in the drive between the first and second shafts and the power leg is arranged to pivot about said intermediate shaft.
  • FIG. 1 is an elevation, partly in section, of a first and presently preferred embodiment showing a portion of a boat to which it is attached;
  • FIG. 2 is an enlarged cross-sectional view of the same
  • FIG. 3 is an enlarged view similar to a portion of FIG. 1, in section;
  • FIG. 4 is a view similar to FIG. 1 of the second embodiment.
  • FIG. 5 is a view similar to FIG. 2 of the second embodiment.
  • the drive unit is attached to the transom 10 by a mounting plate 12 on the exterior of the same.
  • the unit comprises a generally spherical head unit made conveniently aspastings and split on a plane parallel to a diameter, the parts 14, 16 being bolted together at 18.
  • Part 14 which incorporates the mounting plate or is connected thereto journals at 20, 22 a first drive shaft 24, which terminates in the vicinity of the through-transom aperture, in a drive coupling for connection to an engine shaft (not shown) and this shaft is conveniently on the fore and aft centre line of the boat (if a single unit is employed).
  • a first bevel gear 26 is provided at the other end.
  • a second or intermediate shaft 28, FIG. 2 Extending transversely of the axis of shaft 24, and on the diameter of the spheroidal casing or head is a second or intermediate shaft 28, FIG. 2, which is splined at both ends to be fast with opposite drive bevels 30, 32 which are joumalled, e.g. by needle rollers 34, 36, into trunnion blocks 38, 40 which are bolted to the casing or head against bosses 42 provided for this purpose.
  • Two boss flats are provided on each boss 42, as shown in FIG. 2.
  • FIG. 2 shows that the bearings 38 and 40, which are in the form of trunnion blocks, are bolted by means of bolts 44 to one boss flat on each of the bosses 42.
  • a third drive bevel 48 is also mounted on the shaft 28 and between bevels 48 and 30 is a drive dog assembly 50 which is slidably splined to the shaft and is arranged to dog-engage either bevel 30 or bevel 48 or be in a neutral condition therebetween.
  • Selector fork 52 engages the dog assembly 50, is slidable (to remain in one of a series of parallel planes) on cross spindle 54 and to be displaced by crank 56 from an external clutch/gear selector 58.
  • final drive bevel 60 which is permanently meshed with bevel 32 and is rotatable on a third axis or vertical axis intersecting the axes of shafts 28, 24 at the centre of the head.
  • Final drive bevel 60 is fast with shaft 64 which extends down the power leg to drive the propeller via output bevels 66, 68.
  • Shaft 64 is journalled in the power leg casing 70 which includes a flange 72 having a part spherical surface seating inside the head and extending through a slot therein.
  • the slot has parallel sides and semi-circular ends and extends at least from the position vertically below the centre of the head around the head, that is rearwardly and upwardly, being symmetrical of a vertical plane containing the axis of shaft 24.
  • the ends of the slot are indicated by references 74, 76, FIG. 3.
  • Flange 72 has a part-spherical concave upper surface 78 (FIGS. 2 and 3) lying normally of the shaft 64 axis, and is trapped between slipper blocks 80 and the head interior and the blocks are bolted in place at 82 and bearing shims 84 which might be Belleville spring washers are located between the slippers and the said surface 78 (FIG. 2). The flange is thus held against the head but permitted to turn about the centre to take the power leg along the slot.
  • a seal ring 85 is located at the periphery of the slot and may be of elastomeric material.
  • the angle of inclination of the power leg to the transom is controlled, e.g., by a ram 86, FIG. 1 coupled between the leg and the transom and associated with valve means holding fluid pressure in the ram to control its effective length, and in the event of the leg hitting an underwater obstacle this may apply a load sufficient to overcome the valve and allow the ram to extend and the leg to pivot along the slot.
  • spring loaded catches may be employed to the same end.
  • the angle of the leg is important for achieving most efficient propeller action and depends upon the trim of the boat, and variation of the ram length may achieve best results.
  • the length of the slot controls the adjustment which is possible but this can easily be over 60 are, as indicated for example by the chain dot lines 88, FIG. 1.
  • Steering is achieved by turning the power leg about the shaft 64 axis, e.g., via steering link 90 fixed to flange 92 of the casing 70, and the leg may then turn in the coupling 94 at which the ram is connected.
  • the whole unit can be swivelled sideways out of the water for inspection or maintenance by providing the mounting flange 12 with a rotatable connection on the transom.
  • the head casing is generally cylindrical with a lateral extension 102 journalling input shaft 104 and drive is via first bevel 106 to either of a pair of bevels I08, 110, according to the direction of dog clutching via an assembly generally similar to that 50 of the first embodiment but not shown in FIGS. 4 and 5, to transmit drive to transverse shaft 112 which is journalled in the casing 100 and extends therefrom at one end to drive a main drive bevel 114 and hence output bevel 116.
  • the latter are journalled in a separate casing which is angularly movable about axis 122 (the axis of shaft 112) and this casing 120 is integral or coupled to the upper part of the power leg casing 124 and the lower part 126 of the latter is journalled thereon.
  • Kick-up or adjustment of the power leg angle is effected in like manner to that of the first embodiment and results in the two casing parts 100, 120 being angularly adjusted and the chain-dot lines 128 show a possible angle of variation.
  • Steering is effected by turning the lower part 126 by link 130. Swivel may also be provided.
  • casing parts 100, 120 are shown as journalled by plain bearings with O-ring seals which may be satisfactory since kick-up or adjustment movements are infrequent and at low load, but obviously anti-friction ball or roller bearings could be substituted.
  • Lubrication may be provided in both embodiments in known fashion and oil seals may be provided to contain lubricant within specific areas of the units.
  • a marine drive unit for transmitting drive between an inboard engine of a vessel and a propeller thereof, which comprises:
  • a first casing adapted to be mounted on the transom of the vessel and rotatably mounting a horizontal lay shaft which extends transversely of the foreand-aft axis of the vessel;
  • an input shaft adapted to be drivingly connected to the inboard engine and extending in the fore-andaft direction;
  • first drive transmitting elements mounted rotatably, and in spaced relation, on said lay shaft and in constant mesh with a driving element carried by the input shaft so as to contra-rotate with respect to one another;
  • a propeller drive shaft mounted in the second casing and drivingly connected to the power leg shaft;
  • clutch means selectively operable to drivingly connect one or the other of said first drive transmitting elements to the lay shaft to transmit rotational drive from the input shaft to the propeller shaft in a desired rotational sense
  • the clutch means comprising a clutch member mounted on the lay shaft for reciprocation between the first drive transmitting elements and complementary clutch elements 5 6 provided on said first drive transmitting elements asymmetric positions, whereby the lay shaft assemfl P With Said Clutch member; the bly can be reversed end for end, as a unit, by releasprovemen Which comprises! ing and then resecuring the bearing members.
  • a P of bearing members which are located within 2.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Gear Transmission (AREA)
  • Transmission Devices (AREA)
  • General Details Of Gearings (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
US00270512A 1971-07-09 1972-07-10 Marine drive units Expired - Lifetime US3826219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/454,961 US4037558A (en) 1971-07-09 1974-03-26 Marine drive units

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3231171A GB1382835A (en) 1971-07-09 1971-07-09 Marine drive units
GB5164671 1971-11-06

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/454,961 Division US4037558A (en) 1971-07-09 1974-03-26 Marine drive units

Publications (1)

Publication Number Publication Date
US3826219A true US3826219A (en) 1974-07-30

Family

ID=26261308

Family Applications (1)

Application Number Title Priority Date Filing Date
US00270512A Expired - Lifetime US3826219A (en) 1971-07-09 1972-07-10 Marine drive units

Country Status (6)

Country Link
US (1) US3826219A (enExample)
CA (1) CA977628A (enExample)
DE (1) DE2233586A1 (enExample)
FR (1) FR2145959A5 (enExample)
GB (1) GB1382835A (enExample)
IT (1) IT962660B (enExample)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3977356A (en) * 1975-05-16 1976-08-31 Outboard Marine Corporation Stern drive unit and transmission therefor
US4037558A (en) * 1971-07-09 1977-07-26 Enfield Industrial Engines Limited Marine drive units
US4382797A (en) * 1980-09-18 1983-05-10 Outboard Marine Corporation Transom mounted marine propulsion device with lateral crankshaft and power shaft
US4408994A (en) * 1980-09-18 1983-10-11 Outboard Marine Corporation Transom mounted marine propulsion device with fore and aft crankshaft and power shaft
US20090247028A1 (en) * 2005-02-18 2009-10-01 Michael Alan Beachy Head Marine Drive
US20120329346A1 (en) * 2011-06-22 2012-12-27 Michael Alan Beachy Head Drives for propulsion of marine vessels

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4276034A (en) * 1979-04-27 1981-06-30 Outboard Marine Corporation Stern drive gear box and clutching arrangement
SE417075B (sv) * 1979-05-23 1981-02-23 Volvo Penta Ab Transmissionssystem for batmotorer
NZ207500A (en) * 1983-03-16 1986-10-08 H B Carr Bevel gearing for marine propulsion unit

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507844A (en) * 1946-05-03 1950-05-16 Beaumont B Wright Motorboat steering and propulsion mechanism
US3166040A (en) * 1960-11-21 1965-01-19 Borg Warner Drive unit for boats
US3182629A (en) * 1961-06-05 1965-05-11 Borg Warner Drive unit for boats
US3382838A (en) * 1964-02-14 1968-05-14 Volvo Penta Ab Device on the propeller installation for boats
US3430604A (en) * 1967-01-24 1969-03-04 Chrysler Corp Inboard-outboard drive
US3583357A (en) * 1969-04-01 1971-06-08 Outboard Marine Corp Side mount stern drive
US3589204A (en) * 1969-09-08 1971-06-29 Outboard Marine Corp Marine propulsion device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507844A (en) * 1946-05-03 1950-05-16 Beaumont B Wright Motorboat steering and propulsion mechanism
US3166040A (en) * 1960-11-21 1965-01-19 Borg Warner Drive unit for boats
US3182629A (en) * 1961-06-05 1965-05-11 Borg Warner Drive unit for boats
US3382838A (en) * 1964-02-14 1968-05-14 Volvo Penta Ab Device on the propeller installation for boats
US3430604A (en) * 1967-01-24 1969-03-04 Chrysler Corp Inboard-outboard drive
US3583357A (en) * 1969-04-01 1971-06-08 Outboard Marine Corp Side mount stern drive
US3589204A (en) * 1969-09-08 1971-06-29 Outboard Marine Corp Marine propulsion device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037558A (en) * 1971-07-09 1977-07-26 Enfield Industrial Engines Limited Marine drive units
US3977356A (en) * 1975-05-16 1976-08-31 Outboard Marine Corporation Stern drive unit and transmission therefor
US4382797A (en) * 1980-09-18 1983-05-10 Outboard Marine Corporation Transom mounted marine propulsion device with lateral crankshaft and power shaft
US4408994A (en) * 1980-09-18 1983-10-11 Outboard Marine Corporation Transom mounted marine propulsion device with fore and aft crankshaft and power shaft
US20090247028A1 (en) * 2005-02-18 2009-10-01 Michael Alan Beachy Head Marine Drive
US7794295B2 (en) * 2005-02-18 2010-09-14 Michael Alan Beachy Head Marine drive
US20120329346A1 (en) * 2011-06-22 2012-12-27 Michael Alan Beachy Head Drives for propulsion of marine vessels
US8550864B2 (en) * 2011-06-22 2013-10-08 Michael Alan Beachy Head Drives for propulsion of marine vessels

Also Published As

Publication number Publication date
IT962660B (it) 1973-12-31
DE2233586A1 (de) 1973-01-25
CA977628A (en) 1975-11-11
GB1382835A (en) 1975-02-05
FR2145959A5 (enExample) 1973-02-23

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