US3379164A - Nautical apparatus having a removable centerboard - Google Patents

Nautical apparatus having a removable centerboard Download PDF

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Publication number
US3379164A
US3379164A US619697A US61969767A US3379164A US 3379164 A US3379164 A US 3379164A US 619697 A US619697 A US 619697A US 61969767 A US61969767 A US 61969767A US 3379164 A US3379164 A US 3379164A
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United States
Prior art keywords
centerboard
floating support
removable
flanges
support
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
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US619697A
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English (en)
Inventor
Pillon Justin Benoit
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Individual
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Individual
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Publication date
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Publication of US3379164A publication Critical patent/US3379164A/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B35/00—Swimming framework with driving mechanisms operated by the swimmer or by a motor
    • A63B35/08—Swimming framework with driving mechanisms operated by the swimmer or by a motor with propeller propulsion
    • A63B35/10—Swimming framework with driving mechanisms operated by the swimmer or by a motor with propeller propulsion operated by the swimmer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
    • B63B34/50—Body-supporting buoyant devices, e.g. bathing boats or water cycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H16/00—Marine propulsion by muscle power
    • B63H16/08—Other apparatus for converting muscle power into propulsive effort
    • B63H16/12—Other apparatus for converting muscle power into propulsive effort using hand levers, cranks, pedals, or the like, e.g. water cycles, boats propelled by boat-mounted pedal cycles
    • B63H16/14—Other apparatus for converting muscle power into propulsive effort using hand levers, cranks, pedals, or the like, e.g. water cycles, boats propelled by boat-mounted pedal cycles for propelled drive

Definitions

  • the present invention relates to :1 nautical apparatus designed to support and propel through the water a person lying in the swimming position, of the type consisting of a floating support on which the user is permitted to rest on his chest and on his stomach if necessary, and a propulsion device comprising a manual control unit coupled to a screw-propeller by means of a drive system.
  • One of the aims of the invention is to provide an apparatus of this type which is simple to construct and which, while providing the user with great ease of operation and high degree of effectiveness in its utilization, presents the further advantage of being readily adjustable even during use in order to conform either to the physical build or to the convenience of the user and of permitting disassembly for storage or transportation within the minimum space, all such operations being preferably performed without the aid of any tools.
  • the apparatus according to the invention is characterized in that the propulsion device is carried by a removable centerboard slidably mounted in a longitudinal groove formed in the underface of the floating support, a locking means being provided for securing said centerboard at will in the desired position with respect to the floating support.
  • centerboard can be separated from the floating support by causing it to slide completely outside the groove of this latter.
  • the elements can then be placed flat against each other and thus take up the minimum space, which makes it possible to store them, for example, in a suitcase or in the boot of a car.
  • the centerboard is of greater length than the floating support so that, in the utilization position, the screw-propeller being located beneath the floating support body at the rear end thereof, the manual control unit is located at the forward end of said floating support body.
  • the user is thus provided with greatease of operation and has both arms extending forward in front of his head in a position which is conducive both to effective balance and to exertion of the requisite eflort whilst the users legs remain completely free behind the floating support.
  • the user can assist the propulsion by means of a leg-beat or scissors kick and can also use his legs to direct the apparatus.
  • FIG. 1 is a view in part-sectional elevation of a nautical apparatus in accordance with the present invention
  • FIG. 2 is a transverse sectional view taken along line IIII of FIG. 1;
  • FIG. 3 is a view on a larger scale showing a detail of FIG. 1;
  • FIG. 4 illustrates the manual control unit and a portion of the motion transmission system
  • FIG. 5 is an overhead plan view of the floating support element
  • FIGS. 6 and 6a are diagrammatic fragmentary sec-- tional views showing a device for locking the floating support in position with respect to the centerboard;
  • FIG. 7 is a fragmentary sectional view of a constructional detail
  • FIGS. 8 and 9 are fragmentary sectional views showing the mode of attachment of a ballast weight to the centerboard.
  • the nautical apparatus essentially comprises a floating support 1 on which the user rests on his chest and if necessary on his stomach and a centerboard 2 which is removably attached to said support, means being provided as will be described hereinafter for the purpose of interlocking said support and said centerboard.
  • the centerboard 2 is made up of two suitably curved halfshells 3 and 4 each having a flange 5, 6 respectively, which extends over the entire periphery of each half-shell so as to permit the assembly of said half-shells by bonding, welding or like means.
  • the floating support 1 is also constructed in the form of two half-shells 7 and 8 provided with peripheral flanges 9 and 10 for assembly purposes. Said half-shells are molded in such a manner as to reserve two lateral floats 11 and 12 which serve to increase the stability of the complete assembly and also constitute a means for maintaining th users body in position.
  • the half-shell 8 is molded in such a manner as to comprise on its underface a channel 13 of relatively substantial depth for the purpose of engaging therein the two assembled flanges 5 and 6 of the half-shells which constitute the centerboard.
  • the internal width of said channel that is to say the distance between its two walls 14, 15, is substantially equal to the external width of the centerboard as shown in FIGS. 2 and 3, so that the floating support covers the centerboard to a sufficient depth to prevent any angular displacement of this latter with respect to the support in the plane of the figure.
  • the flanges 5 and 6 are preferably turned outwards so as to form wings 16 and 17 which engage between the base 18 of the channel 13 and L-section guides 19 and 20 which are rigidly fixed respectively to the walls 14 and 15 of said channel.
  • the floating support can be displaced longitudinally with respect to the centerboard and can be detached from this latter for such purposes as transportation and that, on the other hand, the centerboard cannot be separated from the support in the vertical direction.
  • FIGS. 5 and 6 it is also possible to form on one of the wings 16 or 17 or on a member which is integral with said wings a series of notches as shown at 21. Provision is made at the front end of the floating support 1 for a rod 22 operated by a crank-handle 23 fitted with a knob 24, said rod being located at the same level as the notches such as the notch 21.
  • the rod 22 is provided with a flattened portion formed across its half-circumference.
  • knob 24 is moved in the direction of the arrow F and brought to position 24, the notches 21 are free and the floating support can be displaced relatively to the centerboard.
  • the propulsion of this apparatus is effected by means of a manual control mechanism enclosed in a casing 25 mounted at the front end of the centerboard and designed to drive a screw-propeller 26 which is placed at the rear end of the centerboard.
  • Said casing 25 is traversed by a shaft 25a fitted at each end with a crank-arm 27 and crank-handle 28 which can be actuated by the user.
  • Ther is keyed on said shaft 25a a bevel gear 29 which engages with a bevel pinion 30, said bevel pinion being keyed on the end of a drive shaft 31 on the end of which is mounted the screwpropeller 26.
  • Said drive shaft passes through the centerboard 2 between the half-shells 3 and 4, as shown more clearly in FIG. 2.
  • the said drive shaft is carried by a bearing 32 in the vicinity of the pinion and by a bearing 33 in the vicinity of the screw-propeller.
  • the operation of the device can readily be understood.
  • the user rotates the crank-handles such as the handle 28, thereby imparting to the screw-propeller a rotational motion which is stepped up in the speed ratio of the two gears 29 and 30.
  • all due precautions are taken to provide leak-tightness in the vicinity of the bearing 33.
  • an elevator plane of generally trapezoidal shape which is mouted on the centerboard 2, for example in the vicinity of the tube which surrounds the drive shaft 31.
  • ballast the apparatus may prove necessary to ballast the apparatus, especially if it has to be used in a somewhat heavy sea. Furthermore, it is highly advantageous to ensure that the ballast or Weighting element employed for this purpose can be detached in order that the machine may not be overloaded when the weighting element is of no further practical use.
  • the flanges 5, 6 which are located at the lower end of the centerboard can be given a semicircular shape as shown at 35 and 36 so that, after the two flanges have been joined together by welding, the bottom portion of the centerboard is of generally tubular shape.
  • the tube thus formed can be covered by half-shells 37, 38 made of lead, each half-shell having the shape of a half-circumference and comprising a flange 39, 40 respectively.
  • the two flanges 39, 40 are therefore intended to be joined together, for example, by means of nuts and bolts.
  • said flanges 5 and 6 can be turned outwards substantially at right angles as shown at 41 and 42 in FIG. 9.
  • the weighting element can in 4 that case be provided in the form of two ingots or bars 43 and 44 each provided with a channel 45, 46 in which are respectively engaged the outwardly folded flanges 41 and 42. These two bars can be assembled as shown at 47 by means of nuts and bolts.
  • the floating support can be completed by two fins such as 48 and 49 (as shown in FIG. 5). Said two fins are intended to be engaged over the flanges 9 and 10 which serve to assemble the two half-shells of the floating support. To this end, and as is more clearly shown in FIG. 7, said flanges are turned outwards substantially at right angles as shown at 50 and 51 and the fin such as 49, for example, terminates in a strengthening rib 52 in which is pierced a channel 53 of T-shaped internal configuration corresponding to the shape of the flanges 9 and 10 and the folded-back edges 50 and 51. Said channel 53 opens on at least one end of the stabilizer fin, thereby permitting the possibility of sliding the fin into position.
  • the fin can be maintained in this position by known means; in par ticular, the channel 53 could be open at only one end of the fin whilst the other end of the latter could be abuttingly applied against the end of the turned-back portions 51 and 52 of the flanges 9 and 10. Provision could also be made for bolts which pass through the heel 52 and the flanges 9 and 10 and which cooperate with wing-nuts.
  • the component parts of this apparatus and in particular the half-shells which constitute the floating support on the one hand and the centerboard on the other hand could be constructed of any suitable material such as, for example, painted sheet metal, plastic-covered sheet metal, or stainless steel sheet.
  • a nautical apparatus designed to support and propel through the water a person lying in the swimming position, of the type consisting of a floating support on which the user is permitted to rest on his chest and on his stomach if necessary, and a propulsion device comprising a manual control unit coupled to a screw-propeller by means of a drive system, characterized in that the propulsion device is carried by a removable centerboard slidably mounted in a longitudinal groove formed in the underface of the floating support, a locking means being provided for securing said centerboard at will in the desired position with respect to said floating support.
  • centerboard is constructed by assembling two half-shells each provided with a peripheral flange turned outwards substantially at right angles so as to constitute a T-section rail slidably fitted in a guide at the bottom of the floating support groove.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Toys (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Body Structure For Vehicles (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Rehabilitation Tools (AREA)
US619697A 1966-03-03 1967-03-01 Nautical apparatus having a removable centerboard Expired - Lifetime US3379164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR51850A FR1482036A (fr) 1966-03-03 1966-03-03 Engin nautique perfectionné

Publications (1)

Publication Number Publication Date
US3379164A true US3379164A (en) 1968-04-23

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ID=8602745

Family Applications (1)

Application Number Title Priority Date Filing Date
US619697A Expired - Lifetime US3379164A (en) 1966-03-03 1967-03-01 Nautical apparatus having a removable centerboard

Country Status (11)

Country Link
US (1) US3379164A (en(2012))
BE (1) BE694519A (en(2012))
CH (1) CH446149A (en(2012))
DE (2) DE6606347U (en(2012))
ES (1) ES337532A1 (en(2012))
FR (1) FR1482036A (en(2012))
GB (1) GB1114230A (en(2012))
GR (1) GR32152B (en(2012))
IL (1) IL27502A (en(2012))
NL (1) NL6703468A (en(2012))
OA (1) OA02573A (en(2012))

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002102658A1 (en) * 2001-06-14 2002-12-27 Douglas Boyd Buchanan Waterborne self-propelled vehicle
FR2981329A1 (fr) * 2011-10-14 2013-04-19 Safran Appendice hydrodynamique tel qu'une quille ou une derive et procede de fabrication

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474502A (en) * 1983-05-31 1984-10-02 Mohamed Daoud Water sporting boat

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039415A (en) * 1959-10-26 1962-06-19 Franz M Foster Diving apparatus
US3119364A (en) * 1962-10-01 1964-01-28 Hugh O Brown Life saving sled

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039415A (en) * 1959-10-26 1962-06-19 Franz M Foster Diving apparatus
US3119364A (en) * 1962-10-01 1964-01-28 Hugh O Brown Life saving sled

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002102658A1 (en) * 2001-06-14 2002-12-27 Douglas Boyd Buchanan Waterborne self-propelled vehicle
FR2981329A1 (fr) * 2011-10-14 2013-04-19 Safran Appendice hydrodynamique tel qu'une quille ou une derive et procede de fabrication
US9254897B2 (en) 2011-10-14 2016-02-09 Safran Hydrodynamic appendage such as a keel or a centerboard, and a method of fabrication

Also Published As

Publication number Publication date
NL6703468A (en(2012)) 1967-09-04
OA02573A (fr) 1970-05-05
IL27502A (en) 1970-06-17
ES337532A1 (es) 1968-03-01
DE1506357A1 (de) 1970-04-30
GR32152B (el) 1967-05-19
BE694519A (en(2012)) 1967-08-23
GB1114230A (en) 1968-05-22
CH446149A (fr) 1967-10-31
FR1482036A (fr) 1967-05-26
DE6606347U (de) 1970-10-08

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