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US3667418A - Marine towing device - Google Patents

Marine towing device Download PDF

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Publication number
US3667418A
US3667418A US24416A US3667418DA US3667418A US 3667418 A US3667418 A US 3667418A US 24416 A US24416 A US 24416A US 3667418D A US3667418D A US 3667418DA US 3667418 A US3667418 A US 3667418A
Authority
US
United States
Prior art keywords
housing
towing device
support means
elastomeric element
rod
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
US24416A
Other languages
English (en)
Inventor
Hans-Georg Janssen
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.)
Weser AG
Original Assignee
Weser AG
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 Weser AG filed Critical Weser AG
Application granted granted Critical
Publication of US3667418A publication Critical patent/US3667418A/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
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/56—Towing or pushing equipment

Definitions

  • a marine towing device has support means which is to be mounted on a marine vessel.
  • a hook is pivotably mounted in a frame and interposed between and connected with both the support means, and the hook is an elastically yieldable unit which yields elastically to a predetermined maximum extent if tensile forces develop between the support means and the hook, as when the latter is engaged with an element to be towed.
  • the present invention relates generally to a marine towing device, and more particularly to a marine towing device utilizing a so-called slip hook.
  • a further object of the invention is to provide such a marine towing device which avoids the sudden transmission of tensile stresses to the marine vessel on which the device is carried, but which does not adversely affect the towing stresses which can be placed upon the device.
  • a marine towing device in the combination which briefly stated comprises support means adapted for mounting on a marine vessel, engaging means adapted for engagement with an element to be towed, and intermediate means interposed between and cooperating with the support means and the engaging means.
  • the intermediate means is elastically yieldable to a predetermine maximum extent in response to development of a selected tensile stress between the support means and engaging means.
  • the construction of the intermediate means in accordance with the present invention is such that it is capable of transmitting towing stresses up to a selected value without reacting, but will react to towing stresses in excess of this value, particularly to sudden tensile stresses which develop.
  • the intermediate means comprises a rod pivotably connected with the frame of the engaging means or hook unit, and a sleeve surrounding the rod and in which the latter is axially slidably guided, with resilient means-such as a spring or the likebeing axially compressible in response to movement between the rod and the tubular member or sleeve in a sense withdrawing the two from one another.
  • resilient means such as a spring or the likebeing axially compressible in response to movement between the rod and the tubular member or sleeve in a sense withdrawing the two from one another.
  • the elastically yieldable means may particularly advantageously be in form of a sleeve of synthetic plastic material which is elasti cally deformable in axial direction and surrounds the rod, engaging with its opposite axial ends the tubular member and the rod, respectively.
  • Suitable synthetic plastics for this purpose are already well known and commercially available under various names such as Adacell, Vulkollan or the like foamed polyurethan.
  • the support means by way of which the towing device is connected with a marine vessel comprises a universal joint to afford free movement of the device with reference to the vessel.
  • FIG. 1 is a somewhat diagrammatic fragmentary axial section through a device according to the present invention
  • FIG. 2 is a section taken in a plane extending at right angles to the plane of the section in FIG. 1;
  • FIG. 3 is a view similar to FIG. 1, but on an enlarged scale and in a more fragmentary illustration, of a further embodiment of the invention.
  • reference numeral 1 identifies a hook, which in conventional manner, is pivotably mounted in a frame 2 for turning movement about a substantially horizontal axis.
  • the hook I In its operating position the hook I is maintained by means of a non-illustrated slip device which, when it is desired to slip or release the rope or cable engaged by the hook I, can be actuated or slipped by the lever 3.
  • the elements 1, 2 and 3 are entirely conventional and well known to those skilled in the art; for this reason they have been illustrated in FIG. 1 and particularly in FIG. 2 in broken lines. The illustration is to be understood as being merely an aid to a better understanding of the position of the novel intermediate means with reference to the elements 1, 2 and 3 which together constitute the engaging means of the towing device.
  • I provide an intermediate means E which is located between and connected with the frame 2 and the support means 4 which in turn is secured to a portion of a marine vessel 5.
  • the portion of the vessel 5 may be a part of the superstructure thereof; its particular identity is immaterial for purposes of the invention.
  • the element E comprises, as illustrated, a rod 6 which is articulately connected with the frame 2, as shown at 6a, and a tubular member 7 which surrounds a portion of the rod 6 with the latter extending through an opening in the end wall 9 which closes the end of the tubular member 7.
  • a sleeve 8 of synthetic plastic material which is axially resiliently compressible and which is confined between and bears upon the end wall 9 of the tubular member 7 and a shoulder 10 provided at the free end of the rod 6 adjacent the nut 6b.
  • Reference numeral 11 identifies a universal joint which is a part of the support means 4 and which affords the element E freedom of movement with reference to the vessel 5.
  • FIG. 3 utilizes for the intermediate element a tubular member 7a which has one closed end and one open end, with the latter facing towards the vessel on which the device is mounted, and which vessel must be thought of as being located at the right of the device in FIG. 3.
  • Reference numeral 11 identifies a connecting member which is secured to the vessel and anchoredas by means of a bolt 14 traversing openings adjacent the free end of the tubular member 7a and the member 1 1-with the tubular member 7a.
  • Accommodated within the tubular member 7a is resilient means in form of an elastically compressible body or member of suitable synthetic plastic material.
  • the member 6a which may also be thought of as a rod member but which has a bifurcated end portion surrounding the tubular member 7a from the closed end thereof and being axially slidable with reference to the tubular member 7a.
  • the latter is provided inwardly of its open end with a pair of diametrally opposite slots 13 which are elongated in the axial direction of the tubular member 7a, and a pin, bolt or analogous member 12 extends through these slots 13 and is anchored in the bifurcated end portion of the member 6a. Movement of the member 6a axially of the member 7a in the direction towards the left-hand side of the FIG. 3, movement of the member 70 towards the right-hand side of FIG.
  • the length of the slots 13 defines the limits of compression and sudden shock-like stresses are absorbed by the member 115 when they exceed a certain limit.
  • the pin 12 moves into abutment with the left-hand ends (with reference to FIG. 3) of the slots 13, then there is a direct transmission of stresses from the frame 2 to the member 1 l and thereby to the vessel, and this will ordinarily take place only if the stresses build up gradually rather than momentarily and suddenly.
  • the device according to the present invention affords greater safety and ease of operation, eliminates economic losses and dangers due to breakage of the rope or cable used for towing, and eliminates economic losses and dangers to personnel resulting from the sudden transmission of stresses in shock-like manner to the vehicle-that is marine vessel-on which the device is mounted.
  • a marine towing device comprising support means adapted for mounting on a marine vessel; engaging means, including a slip hook arrangement adapted for engagement with and release of an element to be towed, at the will of an operator; and an intermediate device between and cooperating with said support means and engaging means, including an elongated tubular housing connected with one of said means, and a one-piece elongated elastomeric element accommodated axially and with slight radial play in said housing and operatively connected with the other of said means whereby, in response to development of a selected tensile stress between said engaging and supporting means and acting longitudinally of said housing, said elastomeric element will undergo axial compression and concomitant radial expansion into progressively increasing frictional engagement with an internal surface of said housing, so as to provide a progressive energy-absorption effect.
  • a towing device as defined in claim 1, said support means comprising a frame and a hook pivotably mounted in said frame; and wherein said intermediate device is connected with said frame.
  • said support means including a universal joint for affording said intermediate device freedom of movement with reference to a marine vessel on which said support means is mounted.
  • a towing device as defined in claim 1, said intermediate device further comprising a rod-portion partly accommodated in said housing and being connected with said other means, said elastomeric element cooperating with said rod portion and housing and being compressible in response to relative sliding movement thereof in axially opposite directions.
  • a marine towing device comprising: support means adapted for mounting on a marine vessel; engaging means, including a slip hook adapted for engagement with an element to be towed; and an intermediate device between and cooperating with said support means and engaging means, including an elongated tubular housing connected with one of said means and having a closed end and an open end which faces and is connected with said support means, an elongated elastomeric element accommodated coaxially and with slight radial play in said housing and operatively connected with the other of said means whereby, in response to development of a selected tensile stress between said means and acting longitudinally of said housing, said elastomeric element will undergo axial compression and concomitant radial expansion into engagement with an inner circumferential surface of said housing, a rod-shaped portion having a bifurcated end which embraces said housing and extends from said closed end toward nected with said bifurcated end.
  • a towing device as defined in claim 8 said contact portion further comprising a plate member secured to said pin within the confines of said tubular housing and oriented in a plane transverse to the axis of said housing.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Package Frames And Binding Bands (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Springs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Catching Or Destruction (AREA)
US24416A 1969-03-15 1970-03-13 Marine towing device Expired - Lifetime US3667418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE6910623U DE6910623U (de) 1969-03-15 1969-03-15 Schleppgeschirr fuer schleppschiffe.

Publications (1)

Publication Number Publication Date
US3667418A true US3667418A (en) 1972-06-06

Family

ID=6600631

Family Applications (1)

Application Number Title Priority Date Filing Date
US24416A Expired - Lifetime US3667418A (en) 1969-03-15 1970-03-13 Marine towing device

Country Status (7)

Country Link
US (1) US3667418A (xx)
DE (1) DE6910623U (xx)
ES (1) ES376794A1 (xx)
FR (1) FR2037812A5 (xx)
GB (1) GB1295352A (xx)
NL (1) NL7003497A (xx)
ZA (1) ZA701722B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904226A (en) * 1973-09-04 1975-09-09 Carl J Smalley Hitch
US4773668A (en) * 1987-06-16 1988-09-27 Grant Muonro Towing hitch
NO323218B1 (no) * 2004-10-12 2007-01-29 Oersta Aqua Systems As Kobling mellom to konstruksjoner, spesielt mellom to flyteelementer eller et flyteelement og et fast punkt på land.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6190091B1 (en) * 1997-08-26 2001-02-20 Novellent Technologies Llc Tension control device for tensile elements

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR605959A (fr) * 1925-11-13 1926-06-04 Dispositif de déclenchement du crochet de remorque de bateaux remorqueurs
US3083992A (en) * 1961-05-03 1963-04-02 Charles B Post Disconnect coupling
US3402925A (en) * 1966-03-03 1968-09-24 Mac Lean Fogg Lock Nut Co Impact energy absorption device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR605959A (fr) * 1925-11-13 1926-06-04 Dispositif de déclenchement du crochet de remorque de bateaux remorqueurs
US3083992A (en) * 1961-05-03 1963-04-02 Charles B Post Disconnect coupling
US3402925A (en) * 1966-03-03 1968-09-24 Mac Lean Fogg Lock Nut Co Impact energy absorption device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904226A (en) * 1973-09-04 1975-09-09 Carl J Smalley Hitch
US4773668A (en) * 1987-06-16 1988-09-27 Grant Muonro Towing hitch
NO323218B1 (no) * 2004-10-12 2007-01-29 Oersta Aqua Systems As Kobling mellom to konstruksjoner, spesielt mellom to flyteelementer eller et flyteelement og et fast punkt på land.

Also Published As

Publication number Publication date
DE6910623U (de) 1969-07-17
ES376794A1 (es) 1972-05-01
FR2037812A5 (xx) 1970-12-31
NL7003497A (xx) 1970-09-17
ZA701722B (en) 1971-01-27
GB1295352A (xx) 1972-11-08

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