US3927633A - Sheath for a staysail of a boat - Google Patents

Sheath for a staysail of a boat Download PDF

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Publication number
US3927633A
US3927633A US504696A US50469674A US3927633A US 3927633 A US3927633 A US 3927633A US 504696 A US504696 A US 504696A US 50469674 A US50469674 A US 50469674A US 3927633 A US3927633 A US 3927633A
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United States
Prior art keywords
section
sheath
arms
stay
passage
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Expired - Lifetime
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US504696A
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English (en)
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Bernard Bernard
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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
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/08—Connections of sails to masts, spars, or the like

Definitions

  • a sheath for a staysail of a sailing boat comprises two boltrope tunnels located on opposite sides of a passage for a stay. The sheath is assembled from a plurality of identical mating sections each of which defines one of the channels and part of the passage.
  • the present invention relates to a sheath for a staysail of a boat. 1 v
  • a sheath for a staysail comprising a plurality of identical sections each having end portions, a center portion between the end portions, and a central plane.
  • Each of these sections comprises means defining a channel provided with a slot and forming a boltrope tunnel, the channel being located on one side of the section, and clamp means on the opposite side of the section, said clamp means including first arms of afirst length at the end portion of the section, and second arms of a second length at the center portion of the section, the second arms being longer than the first arms and being located at a greater distance from said central plane of the section.
  • Each section mates with an adjacent section, with the respective second arms of each section engaging on the first arms of the other section, the mating sections providing a passage for the stay and two boltropetunnels parallel to the passage.
  • the passage is located between the tunnels and the axes of the passage and the tunnels lie in a common place.
  • FIG. 1 is a perspective view of a section for forming a sheath in accordance with the present invention
  • FIG. 2 is an elevation showing part of a sheath, formed from several sections as shown in FIG. 1;
  • FIG. 3 is a cross-section taken on line IIIIII of FIG.
  • FIG. 4 is a section of an abutment for limiting longitudinalplay of the sheath
  • FIG. 4A is a view similar to FIG. 4 but representing a modification thereof.
  • FIG. 5 is an elevation of one half of a sheath entrance gate.
  • the sheath is formed of a series of identical injection-molded elongate sections 15, made, for example, of a polyamide having a very low friction coefficient.
  • Each of these sections has, in the vicinity of one of its longitudinal edges, a longitudinal channel 16 forming a boltrope channel or tunnel which opens to the outside via a longitudinal slot 17.
  • the longitudinal channel 16 is generally of horseshoe shape in cross-section and has, on either side of the slot 17, a flat edge 16a facing the base 17a of the channel 16.
  • the slot extends over an angle a which is at most equal to 30.
  • the longitudinal side of the section 15 opposite that on which the slot 17 is located has, over a quarter of its length starting from each of its ends, a cylindrical profile 18 defined between opposed arms 19 which act as clamps.
  • the section On its two outer faces, at the place where the arms 19 begin, the section has two triangular grooves 20.
  • the arms 19' have substantially flat outer faces 21.
  • the grooves 20 have been eliminated and the edges of the profile 18 are extended by two clamp arms 22 which are longer than the arms 19 and extend by a greater distance than the latter from the longitudinal center plane of the section.
  • the arms 19 each have a flat inner surface which extends outwardly from a flat shoulder as is shown in FIG. 3; the arms 19 end in ribs 23 having the shape of hooks, the cross-section of which is complementary to that of the grooves 20.
  • sections 15 are located alternately on opposite sides of the stay, as is shown in FIGS. 2 and 3. More particularly, when one section 15a is in position, one of the ends of a section 15b is applied against the end of this section 154 and the section 15b is made to slide. The arms 22 of each of the sections are engaged over the arms 19 of other section, and the ribs 23 are engaged into the grooves 20 of the other section, to complete the profile. of the sheath as shown in FIG. 3. At the end of the movement, the edge of the arms 22 of the section 15b abut against that of the arms 22 of the section 15a. A section is then slid along the section 15b until it abuts against the section 15a.
  • a boltrope 7b of the second jib 8b is introduced into the free channel 16, at the base of the sheath, and this jib is hoisted, the channel 16 at the top of the sheath being occupied by a boltrope 7a of the first jib 8a.
  • the longitudinal play of the sheath on the stay 6 may be limited by two stops each fixed on the stay at one of the ends of the sheath.
  • the stop is formed of two identical elements 24 and 24" the outer profile of which is cylindrical, the elements 24', 24"being joined together by screws 25 and defining a cylindrical recess 26 having a diameter equal to, or slightly less than, that of the stay 6. Tightening of the screws 25 fixes the stop in relation to the stay.
  • FIG. shows an entrance gate intended to facilitate the introduction of the boltropes 7a and 7b into the channels 16.
  • This gate is formed of two half shells 27' which are joined together by means of screws 28. These two half shells define, on their upper portion, a cavity 29 in which the bottom end of the sheath may be enclosed.
  • An axial channel 30, which forms an extension of the channel provided in the sheath for the passage of the stay 6 opens into the cavity 29; further, two channels 31a and 31b which are connected with the channels 16, open axially into the cavity 29, the bases of the channels 31a, 31b opening out laterally to define openings 32a and 32b.
  • a sheath for a staysail comprising a plurality of identical sections each having end portions, a center portion between the end portions, and a central plane, each said section comprising means defining a channel provided with a slot and forming a boltrope tunnel, said channel being located on one side of the section, and
  • clamp means on the opposite side of the section, said clamp means including first arms of a first length at the end portion of the section, and
  • each said section mating with an adjacent section with the respective second arms of each section engaging on the first arms of the other section, said mating sections providing a passage for the stay and two boltrope tunnels parallel with the passage, with the passage being located between the tunnels and the axis of the passage and the tunnels lying in a common plane.
  • a sheath according to claim 1 further comprising hook portions at the ends of the second arms, and
  • each said section is of substantially horse-shoe shape in cross-section, said channel comprising a base, said base facing the slot, and
  • flat edge portions said flat edge portions lying on opposite sides of the slot and facing the base of the channel.
  • each side channel communicating with a respective boltrope tunnel of the sheath, the side channels curving inwardly and opening laterally outwardly.
  • stops said stops being fixed to the stay adjacent the ends of the sheath.
  • each of said stops comprises I two elements, said elements being joined together and defining a cylindrical recess, said stay extending through said recess.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Earth Drilling (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Connection Of Plates (AREA)
US504696A 1973-09-18 1974-09-10 Sheath for a staysail of a boat Expired - Lifetime US3927633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7333850A FR2243862B1 (enrdf_load_stackoverflow) 1973-09-18 1973-09-18

Publications (1)

Publication Number Publication Date
US3927633A true US3927633A (en) 1975-12-23

Family

ID=9125345

Family Applications (1)

Application Number Title Priority Date Filing Date
US504696A Expired - Lifetime US3927633A (en) 1973-09-18 1974-09-10 Sheath for a staysail of a boat

Country Status (7)

Country Link
US (1) US3927633A (enrdf_load_stackoverflow)
JP (1) JPS5076781A (enrdf_load_stackoverflow)
AU (1) AU7315474A (enrdf_load_stackoverflow)
DE (1) DE2444445A1 (enrdf_load_stackoverflow)
FR (1) FR2243862B1 (enrdf_load_stackoverflow)
GB (1) GB1423768A (enrdf_load_stackoverflow)
IT (1) IT1020816B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597346A (en) * 1984-03-14 1986-07-01 The Coleman Company, Inc. Non-conducting mast for sailboats
US4619216A (en) * 1984-10-05 1986-10-28 Crear Iii William Sailboat luff system
US4718369A (en) * 1984-03-14 1988-01-12 Coast Catamaran Corporation Non-conducting mast for sailboats
US5463970A (en) * 1995-03-13 1995-11-07 Harken, Inc. Furling foil for sailing vessel
US6058868A (en) * 1998-03-20 2000-05-09 Pompanette, Inc. Furling element
US7096812B1 (en) 2005-07-20 2006-08-29 Fred C Cook Aerodynamic headstay foil

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432432A1 (fr) * 1978-08-04 1980-02-29 Ingouf Pierre Perfectionnement aux systemes enrouleurs de focs
FR2440870A1 (fr) * 1978-11-07 1980-06-06 Ingouf Pierre Perfectionnement aux systemes enrouleurs de grand'voile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800728A (en) * 1971-08-17 1974-04-02 T Dowling Means for attaching staysails to stays
US3802373A (en) * 1972-01-20 1974-04-09 R Lagerquist Encapsulating sleeve for headstay of a sailboat
US3851609A (en) * 1972-08-21 1974-12-03 L Stearn Two groove headstay

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800728A (en) * 1971-08-17 1974-04-02 T Dowling Means for attaching staysails to stays
US3802373A (en) * 1972-01-20 1974-04-09 R Lagerquist Encapsulating sleeve for headstay of a sailboat
US3851609A (en) * 1972-08-21 1974-12-03 L Stearn Two groove headstay

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4597346A (en) * 1984-03-14 1986-07-01 The Coleman Company, Inc. Non-conducting mast for sailboats
US4718369A (en) * 1984-03-14 1988-01-12 Coast Catamaran Corporation Non-conducting mast for sailboats
US4619216A (en) * 1984-10-05 1986-10-28 Crear Iii William Sailboat luff system
US5463970A (en) * 1995-03-13 1995-11-07 Harken, Inc. Furling foil for sailing vessel
US6058868A (en) * 1998-03-20 2000-05-09 Pompanette, Inc. Furling element
US7096812B1 (en) 2005-07-20 2006-08-29 Fred C Cook Aerodynamic headstay foil

Also Published As

Publication number Publication date
FR2243862A1 (enrdf_load_stackoverflow) 1975-04-11
DE2444445A1 (de) 1975-03-27
JPS5076781A (enrdf_load_stackoverflow) 1975-06-23
AU7315474A (en) 1976-03-18
GB1423768A (en) 1976-02-04
FR2243862B1 (enrdf_load_stackoverflow) 1976-06-18
IT1020816B (it) 1977-12-30

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