US3791328A - Ice removal track - Google Patents

Ice removal track Download PDF

Info

Publication number
US3791328A
US3791328A US00263988A US3791328DA US3791328A US 3791328 A US3791328 A US 3791328A US 00263988 A US00263988 A US 00263988A US 3791328D A US3791328D A US 3791328DA US 3791328 A US3791328 A US 3791328A
Authority
US
United States
Prior art keywords
ice
vessel
cut
framework
path
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
US00263988A
Other languages
English (en)
Inventor
J Schirtzinger
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.)
Air Logistics Corp
Original Assignee
Air Logistics Corp
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 Air Logistics Corp filed Critical Air Logistics Corp
Application granted granted Critical
Publication of US3791328A publication Critical patent/US3791328A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
    • B63B35/12—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor having ice-cutters

Definitions

  • ABSTRACT There is provided a system for cutting thin ice ahead Inventor: Joseph F. Schirtzinger, Pasadena,
  • the system consists essentially of a centrally located ice cutter mounted on a vessel, two pivoting ice [22] Filed:
  • Ice formations preclude the transportation of cargo and the like in lakes by vessels for many months of each year. Ice breaking vessels have been employed, but have been established to be of limited utility.
  • an ice cutting system for marine vessels in which there is provided at least one ice engaging unit supported on the prow of the vessel.
  • the unit consists of a plurality of spaced ice chippers which rotate on what amounts to be a plurality of horizontally disposed endless chains secured to and driven by a plurality of spaced gear mounted on parallel shafts. The chippers engage the ice and break the ice into small chunks to clear a path ahead of the vessel.
  • an ice channel cutter for mounting on the prow of a vessel which consists of a plurality of parallel spaced vertically mounted ice engaging units each having an array of radially extending ice chopping blades, or cutters.
  • the ice chopper rotates simultaneously with the forward motion of the vessel and chops the ice into relatively small chunks which are carried rearwardly around the vessel or downwardly under the vessel.
  • the system consists of a first ice cutter centrally mounted on the bow ofa seagoing vessel. There is prov vided a pair of pivotally mounted traversing ice cutters which cut a path extending from the central ice cutter to some point beyond the port and starboard extremities of the vessel where there is positioned on an extended port and starboard framework ice cutters which define the extremity of the swath of the path being cut.
  • the centrally located ice cutter the ice ahead of the vessel is cut into groups oftriangularly" shaped blocks, each passing to the port and starboard side of the vessel.
  • the system provided in accordance with the invention is particularly useful on a tug which tows a cargo bearing barge wider than the tug to provide an open path through the ice for passage of the cargo-bearing barge, or for use by a tug alone, to maintain an open path through the ice for the passage of following vessels.
  • FIG. 1 shows the operation of the ice removal system of this invention as associated with a tug.
  • FIG. 2 shows the system in its framework in a retracted position where the track is retractable and where the ice cutting function is no longer called for.
  • FIG. 3 is an illustration of one ice cutting mechanism which may be employed on each ice cutter used on the vessel.
  • FIG. 1 there is shown a seagoing vessel 10, typically a tug, containing its full complement of power requirements for the operation of the vessel and ice cutting mechanisms powered by it, as well as housing requirements for the crew and navigational aids.
  • a first ice cutting means 12 Centrally mounted on the bow ofvessel 10 is a first ice cutting means 12 which cuts a path through the ice along the center line of the vessel.
  • the central ice cutting cutter as shown, is provided with its own motor 14, or in the alternative, may simply be a housing for ice cutter l6 driven by some means internal to the vessel.
  • a retractably extended framework 18 Mounted on the port and starboard sides of the vessel are fixed, or as shown, a retractably extended framework 18, the functions of which will be explained in detail below.
  • a pair of pivotably mounted ice cutters 20 which traverse a path between the centrally mounted ice cutter 12 and the ice cutters 22 mounted on framework 18.
  • ice cutter is a means which functions to cut ice by a chipping and/or cutting action with chipping being preferred and as less energy is required to chip ice into chunks as opposed to cutting into fine pieces.
  • Each may be driven by individual motor associated with each or driven by mechanisms within vessel 10 such as chain and sprocket drives and the like.
  • Ice cutter 12 which as indicated, is located centrally to vessel 10, cuts a path along the center line of the vessel.
  • Traversing ice cutters have pivoting arms 24 which may have, mounted on the extremity thereof, motors 26 to drive cutters 16. These, in general, traverse a path between the central ice cutter l2 and the ice cutters 22 mounted on framework 18, on both port and starboard sides of vessel 10.
  • Rods 30, mounted on the frames 19 of framework 18, are connected to inclined runners or guiding surfaces 31 which progressively engage the triangular shaped blocks of ice and progressively urge them away from the vessel and downward and under the main ice body 32 to provide an open water path 34 for passage of barge 36 or following seagoing vessels.
  • the track When the track is retractable, it is held in its ice path cutting function in an extended position by pivoting arms 38. To enable it to be retractable, there is provided a series of hinges 40 which permit return of track 18 to the side of vessel by the return rotation of arms 38 pulling on rods 42.
  • track 18 When track 18 is retractable, retraction occurs by a cooperation of its structure in conjunction with pivoting arms 38 operating by rods 42.
  • framework 18 is provided with a plurality of rigid frame members 19 interconnected by hinges 40. Some of frame members 19 support rods 30 which are, in turn, connected to the inclined runners or guiding surfaces 31 which progressively engage the triangular shaped blocks of ice, as they progress towards the stern of vessel 10 and move them down and under the surface of ice 32.
  • Frame members 19 which support the inclined runners or guiding surfaces 31 when extended, are positioned at some angle to the side of vessel 10. Interconnecting frame members are generally perpendicular to the side of vessel 10.
  • arms 38 are rotated inward towards the sides of the vessel. They pull on rods 42 which acts to draw rear frame members 21, to which they are connected, forward.
  • outward members 19 may either be drawn forward or rearward relative to the sides of vessel 10 to collapse framework 18 in an accordian like manner and move all of its constituents including the port and starboard framework mounted ice cutters 22 to the port and starboard sides of vessel 10.
  • the distributed ice blocks may return by current action but flow as free blocks through the path cut to be discarded and enable passage of any number of vessels.
  • arms 38 are pivoted inwardly toward the vessel drawing the track in against the port and starboard side of the vessel as shown in FIG. 2.
  • Arms 20 are also returned to a central location and the action of the ice chippers disengaged to minimize power requirements of the vessel as well as drag.
  • lt consists essentially of shaft 44 on which there is mounted a plurality of ice chipping blades 46 connected by shaft 44 to a motor mounted on each of the ice cutters 12, 22 and 26, or driven by a chain and sprocket drive contained within the housing above the ice cutter and power from within the vessel, itself, although in any event the energy requirements are met by vessel 10.
  • FIG. 3 The configuration shown in FIG. 3 is that which would be typically employed for starboard oriented cutters with the mirror image of FIG. 3 being employed for portside directed cutters'in order that the ice cut will always be thrown away from the vessel.
  • a pair of staggered intermeshing cutters (not shown). They must rotate, however, in such a manner that chipped ice is always thrown in an aft direction as this aids in propelling the vessel in a forward direction.
  • the ice chipped away ahead of both vessel 10 and framework 18 may, in some instances, strike the surfaces thereof, the frontal portions of framework 18, as well as the bow of vessel 10, are preferably provided with elastomeric or reflective surfaces (not shown) to deflect thrown chips of ice to prevent damage thereto.
  • the degree of expansion on each side of the vessel may be limited to the extent required for the path to be cleared through the ice. This permits limiting the degree of traverse required for pivotable ice cutters 20 and therefore reduces the energy requirements for their traversing action.
  • Another advantage is that only one of the extendable frameworks 18 may be extended and the other remain retracted.
  • the traversing ice cutter 20 associated with the retracted framework need only operate to the extent of approximately the location of the fixed ice cutter on the retained framework to cut blocks of ice approximately commensurate with the width of the vessel on the side where the framework retains retracted ice cutter 22.
  • the framework 18 can be extended to any degree desired and cooperating with the traversing ice cutter 20, cut a track through ice to the extent of extension provided.
  • the traversing ice cutters may traverse fully to the track cut by the ice cutters 22 mounted on framework 18. Yet, it may all overlap or fall slightly short of the path cut by ice cutters 22 on the framework 18 when fully extended. Where it falls short, but substantially meets the path cut by cutters 22 on framework 18, the residual ice remaining is sufficiently small so as not to interfere with formation and movement of cut blocks of ice under the ice surface adjacent the vessel.
  • An ice removal system for cutting an open path through thin ice on the port and starboard sides of a vessel which comprises:
  • a first ice cutting means centrally mounted on the bow of a vessel and adapted to cut a path through ice
  • a pair of pivotably mounted ice cutting means each respectively adapted to cut a traversing path through ice extending from the first ice cutting means and beyond the port and starboard sides of the vessel;
  • ice cutting means adapted to substantially intersect the path cut by one of said pivotably mounted ice cutting means and ii. means to engage and urge cut blocks of ice away from the vessel and under the uncut surface of the ice.
  • each ice cutting means consists of a plurality of ice chipping blades secured to a motor driven rotatable shaft.
  • An ice removal system for cutting an open path through thin ice on the port and starboard sides of a vessel which comprises:
  • a first ice cutting means centrally mounted on the bow of a vessel and adapted to cut a path through ice
  • a pair of pivotably mounted ice means each adapted to cut a traverse path through ice extending from the first ice cutting means to beyond the port and starboard sides of the vessel;
  • ice cutting means positioned at about the extremity of the framework, said ice cutting means adapted to be positioned to intersect the traverse path cut by a pivotably mounted ice cutting means;
  • ii. means to engage and urge cut blocks of ice away from the vessel and under the uncut surface of the ice;
  • each expandable framework means associated with each expandable framework to extend said expandable framework from the side of the vessel and return said expandable framework to the side of the vessel.
  • each ice cutting means consists of a plurality of ice chipping blades secured'to a motor driven rotatable shaft.
  • An ice removal system as claimed in claim 5 in which the means to urge blocks of cut ice away from the vessel and under the surface of the ice consists of a plurality of inclined runners projecting downwardly from each framework the runners adapted to progressively engage blocks of cut ice and move them away from the vessel and under the surface of the ice.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physical Water Treatments (AREA)
  • Confectionery (AREA)
US00263988A 1972-06-19 1972-06-19 Ice removal track Expired - Lifetime US3791328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26398872A 1972-06-19 1972-06-19

Publications (1)

Publication Number Publication Date
US3791328A true US3791328A (en) 1974-02-12

Family

ID=23004091

Family Applications (1)

Application Number Title Priority Date Filing Date
US00263988A Expired - Lifetime US3791328A (en) 1972-06-19 1972-06-19 Ice removal track

Country Status (5)

Country Link
US (1) US3791328A (fi)
CA (1) CA970224A (fi)
FI (1) FI55968C (fi)
NO (1) NO140293C (fi)
SE (1) SE379707B (fi)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069783A (en) * 1976-11-11 1978-01-24 Sun Oil Company Limited Method of and apparatus for disaggregating particulate matter
US4294183A (en) * 1980-04-14 1981-10-13 Suncor Inc. Cutter configuration for efficient ice disaggregation and clearing
US4523876A (en) * 1983-12-02 1985-06-18 Shell Oil Company Ice slot maintenance
US4549836A (en) * 1983-12-02 1985-10-29 Shell Oil Company Ice slot construction

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521592A (en) * 1968-05-13 1970-07-21 Michael W Rosner Ice channel cutter
US3636904A (en) * 1969-01-17 1972-01-25 Grenobloise Etude Appl Icebreaker equipment for ships

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521592A (en) * 1968-05-13 1970-07-21 Michael W Rosner Ice channel cutter
US3636904A (en) * 1969-01-17 1972-01-25 Grenobloise Etude Appl Icebreaker equipment for ships

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4069783A (en) * 1976-11-11 1978-01-24 Sun Oil Company Limited Method of and apparatus for disaggregating particulate matter
US4294183A (en) * 1980-04-14 1981-10-13 Suncor Inc. Cutter configuration for efficient ice disaggregation and clearing
US4523876A (en) * 1983-12-02 1985-06-18 Shell Oil Company Ice slot maintenance
US4549836A (en) * 1983-12-02 1985-10-29 Shell Oil Company Ice slot construction

Also Published As

Publication number Publication date
SE379707B (fi) 1975-10-20
CA970224A (en) 1975-07-01
NO140293C (no) 1979-08-15
FI55968C (fi) 1979-11-12
NO140293B (no) 1979-04-30
FI55968B (fi) 1979-07-31

Similar Documents

Publication Publication Date Title
RU2075421C1 (ru) Ледокольное судно
KR101704043B1 (ko) 선박의 쇄빙특성 개선방법 및 그 방법에 따라 구성된 선박
US20050132683A1 (en) Airboat with aquiatic vegetation shredding assembly
CN106005284A (zh) 一种压力式气垫破冰船
US3412705A (en) Navigational system
CN113291444A (zh) 一种水航体新型倒航结构装置
PL58943Y1 (en) Power unit waterborne means of transport
US3791328A (en) Ice removal track
US3768428A (en) Sweep ice cutter
US2883957A (en) Boat with means for cutting an ice channel
US3667416A (en) Devices for cutting a channel in a layer of ice, and an ice-breaker ship equipped with said devices
US4932839A (en) Propulsion and steering apparatus
US2651874A (en) Fishing vessel
US6449931B1 (en) Aquatic vegetation shredder having bow and stern mounted high speed, large chopping propellers
US5660131A (en) Icebreaker attachment
US3808998A (en) Boat with bow outdrive and vertically swingable bow plane
US3521592A (en) Ice channel cutter
US3913511A (en) Navigational ice breaking means and vessel therefor
US4652245A (en) Shallow draft boat
US3468277A (en) Ice channel cutter
US3207118A (en) Boat propulsion system
KR900006806B1 (ko) 쇄빙선의 선미(船尾)에이프런
US5664977A (en) Boat propeller sled
US2902966A (en) Tugboat and towing system comprising the same
US4030442A (en) Marine propulsion device