US3538875A - Hopperbarge - Google Patents

Hopperbarge Download PDF

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Publication number
US3538875A
US3538875A US776561A US3538875DA US3538875A US 3538875 A US3538875 A US 3538875A US 776561 A US776561 A US 776561A US 3538875D A US3538875D A US 3538875DA US 3538875 A US3538875 A US 3538875A
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US
United States
Prior art keywords
barge
hopperbarge
longitudinal edges
edges
hold
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
US776561A
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English (en)
Inventor
Jan De Koning
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.)
Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
Original Assignee
Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
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 Ingenieursbureau voor Systemen en Octrooien Spanstaal BV filed Critical Ingenieursbureau voor Systemen en Octrooien Spanstaal BV
Application granted granted Critical
Publication of US3538875A publication Critical patent/US3538875A/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 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/28—Barges or lighters
    • B63B35/30—Barges or lighters self-discharging
    • B63B35/308—Split barges interconnected hingedly or slidably

Definitions

  • the invention relates to a hopperbarge, comprising two air cases which border together the barges hold and which can each swing round a ships longitudinal axis between a loading position in which the hold is closed at the lower side, and an unloading position in which the hold is open at the lower side, whereby the shape of the opposed longitudinal edges at the lower side of the air cases is such, that they are spaced apart at each place out of their middle more than in their middle during closing the barge.
  • a hopperbarge is known. With this barge the two opposed longitudinal edges of the air cases are somewhat arched. During the closing of this known barge the longitudinal edges first bound to each other in the middle.
  • the invention improves the hopperbarge of the last-mentioned kind, in that said hopperbarge comprising seal means is mounted on at least one of the two, longitudinal edges, said seal means consisting of at least one elastically compressible strip, whereby in the empty closed position of the barge the compression of the seal means at each place out of the middle of the longitudinal edges is so much less than that in the middle of these edges as the longitudinal edges, owing to the deformation of the air cases, deflect less form each other at said place than the middles of the longitudinal edges during the loading operation of the barge.
  • the seal is equable over the whole length of the longitudinal edges, because the remaining prestress in the elastic means after loading the barge is equably divided over the whole length of the barge.
  • Small stones can penetrate into'the elastic means. Large hydraulic jacks are not per se necessary, because only the relatively flexible elastic means are to be prestressed and no extremely forces are necessary for this.
  • FIG. 1 a section over the line 1-1 of FIG. 3,
  • FIG. 2 a top view, whereby the barge is somewhat open
  • FIG. 3 a top view, whereby the barge is closed and empty
  • FIG. 4 a top view, whereby the barge is closed and completely loaded
  • FIG. 5 a characteristic of the applied elastic means.
  • the hopperbarge according to the invention is mainly built up from two air cases 1 which are pivotably connected to each other by means of two hinges 2 disposed in the ships longitudinal axis.
  • the air cases I enclose the hold 3 between them. All this is so that in the loaded position of the barge the load inclines to swing the air cases 1 from each other into the opened position pointed out with dotted lines in FIG. 1. This is prevented either by means of hydraulic jacks 4 or by means of claws not-shown, which keep the air cases 1 together.
  • the barge When the oil is exhausted at the piston-rod side of the hydraulic jacks 4, respectively when the above-mentioned claws are brought out of engagement, the barge opens itself. After the load is fallen out of the barge at the lower side, the barge closes itself. In this position the oil outlet from the piston-rod side of the hydraulic jacks can be cut ofi, respectively the above-mentioned claws can be brought into engagement with each other, so that the barge can be loaded then.
  • the opposed longitudinal edges 5 at the lower side of the barge have a shape as is drawn in exaggerated measure in FIG. 2.
  • the middles M of these edges 5 are positioned closer to each other than the other parts of these edges 5.
  • elastic means formed by a hollow rubber strip 7 are mounted, the section of which is the same over the whole length in unstressed position of this strip 7.
  • FIG. 5 the relation between the compression in cm. and the compressure force in kg. per meter is drawn of a hollow rubber strip to be applied said strip having a height and a width of about l0 cm.
  • each strip 7 is compressed, for instance 4 cm., in the middle M. Then a compression of 2 cm. remains over the whole length of the strip 7 which provides a seal pressure of 2,500 kg./m. over the whole longitudinal edges.
  • a hopperbarge comprising a pair of load carrying air cases defining the hold of the hopperbarge, means mounting said air cases for swinging movement about a substantially longitudinal axis of the hopperbarge between a load carrying position wherein the hold is closed at the lower side and an unloading position wherein the hold is open at the lower side, means for moving said air cases between load carrying position and unloading position, said air cases having at the lower side thereof opposed longitudinally extending edges which in the unloaded load carrying position of the hopperbarge are in spaced relationship and are in substantially unstressed condition and are of such a configuration that the central portionsof said edges are positioned closer to one another than the remaining portions of the edges, and seal means supported at least by one of said edges, said seal means comprising a relatively flexible plastic strip which in the unloaded load carrying position of the hopperbarge is in prestressed condition and is prestressed to a greater extent in the central portion thereof than in the remaining portions thereof, the stress in said seal means being substantially equal throughout the length thereof when the hopper

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Ship Loading And Unloading (AREA)
  • Bag Frames (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
US776561A 1967-12-07 1968-11-18 Hopperbarge Expired - Lifetime US3538875A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL676716647A NL140468B (nl) 1967-12-07 1967-12-07 Afdichting van klapbakken.

Publications (1)

Publication Number Publication Date
US3538875A true US3538875A (en) 1970-11-10

Family

ID=19801928

Family Applications (1)

Application Number Title Priority Date Filing Date
US776561A Expired - Lifetime US3538875A (en) 1967-12-07 1968-11-18 Hopperbarge

Country Status (8)

Country Link
US (1) US3538875A (enrdf_load_stackoverflow)
BE (1) BE724952A (enrdf_load_stackoverflow)
DE (1) DE1811538A1 (enrdf_load_stackoverflow)
FR (1) FR1592391A (enrdf_load_stackoverflow)
GB (1) GB1242279A (enrdf_load_stackoverflow)
IE (1) IE32492B1 (enrdf_load_stackoverflow)
NL (1) NL140468B (enrdf_load_stackoverflow)
NO (1) NO123414B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531469A (en) * 1982-12-08 1985-07-30 Ihc Holland N.V. Vessel comprising two pivotably connected hull sections

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53165494U (enrdf_load_stackoverflow) * 1977-05-27 1978-12-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4531469A (en) * 1982-12-08 1985-07-30 Ihc Holland N.V. Vessel comprising two pivotably connected hull sections

Also Published As

Publication number Publication date
GB1242279A (en) 1971-08-11
NL6716647A (enrdf_load_stackoverflow) 1969-06-10
IE32492L (en) 1969-06-07
NO123414B (enrdf_load_stackoverflow) 1971-11-08
DE1811538A1 (de) 1970-02-05
BE724952A (enrdf_load_stackoverflow) 1969-05-16
NL140468B (nl) 1973-12-17
FR1592391A (enrdf_load_stackoverflow) 1970-05-11
IE32492B1 (en) 1973-08-22

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