US3219216A - Apparatus for handling sheets - Google Patents

Apparatus for handling sheets Download PDF

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Publication number
US3219216A
US3219216A US287070A US28707063A US3219216A US 3219216 A US3219216 A US 3219216A US 287070 A US287070 A US 287070A US 28707063 A US28707063 A US 28707063A US 3219216 A US3219216 A US 3219216A
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US
United States
Prior art keywords
sheet
cable
sheets
members
edge
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
US287070A
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English (en)
Inventor
Jean G Pinaud
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.)
Compagnie des Ateliers et Forges de la Loire SA
Original Assignee
Compagnie des Ateliers et Forges de la Loire SA
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 Compagnie des Ateliers et Forges de la Loire SA filed Critical Compagnie des Ateliers et Forges de la Loire SA
Application granted granted Critical
Publication of US3219216A publication Critical patent/US3219216A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • B66C1/14—Slings with hooks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/20—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands
    • B21B39/32—Devices specially adapted for turning sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/08—Accessories for handling work or tools
    • B21J13/10—Manipulators
    • B21J13/12—Turning means

Definitions

  • This invention relates to apparatus for handling sheets of metal or the like, and more specifically to handling apparatus whereby heavy sheets can be turned over rapidly and safely.
  • Conventional handling apparatus for heavy gage metal sheets as used especially for turning over the sheets for treatment in rolling mills and the like, generally comprise clamping means adapted to grip one side edge of the sheet and attached to hoisting apparatus.
  • the latter is operated to lift the clamping means and the edge of the sheet gripped by it so as to raise the sheet of the ground and then to ease the sheet down eg in inverted condition, assuming the purpose of the handling operation is to turn the sheet over.
  • the sheet is raised clear of its support on the floor the sheet is retained exclusively by the engagement of its uppermost edge with the clamping means, so that in the event of failure of the latter the sheet will necessarily drop to the ground with consequent hazard to personnel and equipment.
  • a clumsy manoeuvering of the hoisting gear it can happen that the lower edge of the sheet touches the ground surface before the proper time, causing premature disengagement of the clamping means and release of the sheet.
  • Objects of this invention are to provide improved handling apparatus for sheets, whereby heavyweight sheets can be turned over and otherwise handled with increased safety and positive assurance against untimely release; the provision of such apparatus in which the forces of gravity are utilized in an improved manner to achieve safer operation and facilitate the rnanoeuvering of hoisting gear for the turning over of the sheet; the provision of such handling apparatu which will be simple, strong and economical, and minimize floor space requirements.
  • improved sheet handling apparatus comprises first gripping means, such as a first pair of spaced hooks, engageable with one side edge of a sheet; second gripping means such as a second pair of spaced hooks engageable with the opposite side edge of the sheet; flexible cable means attached to the first gripping means and extending slidably through guide passage means provided in the second gripping means; and hoisting apparatus connectable to said cable means beyond said guide passage means.
  • first gripping means such as a first pair of spaced hooks
  • second gripping means such as a second pair of spaced hooks engageable with the opposite side edge of the sheet
  • flexible cable means attached to the first gripping means and extending slidably through guide passage means provided in the second gripping means
  • hoisting apparatus connectable to said cable means beyond said guide passage means.
  • FIGS. 1 to 5 are simplified views, in elevation, of improved sheet handling apparatus according to the invention in various stages of the process involved in turning over a metal sheet upon its supports;
  • FIG. 6 is an overhead plan view corresponding to FIG. 1.
  • the handling de- 3,219,216 Patented Nov. 23, 1965 ice vice of the invention in the embodiment shown comprises a pair of hook members 1 adapted to engage one side of the sheet 2, and a pair of hook members 3 adapted to engage the opposite side of the sheet.
  • the two spaced hook members in each of the pairs 1 and 3 are interconnected by suitable balancing means, not shown.
  • suitable balancing means not shown.
  • a single gripping member or hook may be provided for engagement with each of the opposite side edges of the sheet instead of the two members shown.
  • Cable means schematically indicated at 4 are provided, one end thereof being attached to the hook means 1 in any suitable manner, such as by means of the pins 5.
  • the opposite hooking members 3 are each provided with a guide passage 6 formed in a side thereof.
  • the guide passage 6 has outwardly flaring side walls 7 and 8 providing a diverging outlet aperture with rounded sides.
  • the passage 6 is laterally offset with respect to the hooking portion of the member 3 for reasons that will presently appear.
  • the cable means 4 extending from their points of attachment 5 with the hook members 1 are passed through the guide passages 6 in the hook members 3, below the under surface of the sheet 2 supported on ground supports such as sillS A and B, and the far end of the table means at 4' is adapted to be connected, e.g. through a suitable balance beam, with hoisting apparatus not shown, e.g. a travelling crane.
  • the hoisting apparatus is operated to raise the cable 4 as indicated by the arrow L in FIG. 1.
  • the sheet is thus lifted in the manner indicated in FIG. 2, the hooking members 3 being lifted off the ground first, with the cable 4 engaging the upper side walls 7 of the guide passages 6, while the hook members 1 remain trailing on the ground.
  • the hoisting movement being continued, as the trailing hooking members 1 are lifted clear of the ground as shown in FIG. 3, the sheet 2 of its own accord swings to a position lying to the opposite side of the now substantially vertical cable 4, as will be clear from FIG. 3.
  • the hoisting apparatus is displaced as indicated by the arrow T in order to bring the lower gripping members to a position corresponding to the initial position of the upper gripping members 3, as indicated in FIG. 4, and is then lowered as indicated by the arrow D.
  • the gripping members 1 and the edge of the sheet supported by them are thus eased on to the ground supports A and B, after which the sheet rocks about said edge as a fulcrum until it is brought to the horizontal inverted position shown in FIG. 5.
  • the gripping members 1 and 3 are then easily disengaged from the sheet, completing the operation.
  • the turning over operation as described can be performed in a minimum of floor space, no greater than the width dimension of the sheet.
  • the process is completely safe since the sheet is at all times positively supported from below and, moreover, premature lowering of the sheet into contact with the ground will not result in a premature release of the sheet due to the fact that the sheet is simultaneously being retained at its upper edge.
  • the force of gravity is furthermore taken advantage of to produce the desired automatic reversal of the sheet while suspended due to the aforementioned lateral displacement of the guide passage 6 for the cable with respect to the point of gripping engagement of the hook member with the sheet. This further facilitates the hoist manoeuvering operations.
  • An additional advantage of the apparatus disclosed is that in view of the sliding engagement of the cable 4 with the upper gripping members 3, the apparatus will automatically adjust itself to sheets of varying width.
  • the hook members could easily be redesigned in such a manner that the cable-means 4 shall extend over rather than under the sheet in its initial condition, this involving primarily a recontouring of the walls 7 and 8 of the guide passages 6 in the upper gripping members to ensure the desired reversal of the sheet while suspended.
  • a method for turning a sheet lying flat on a surface comprising engaging one edge of said sheet with a first hooking means, engaging the opposite edge of said sheet with a second hooking means, attaching one end of a cable means to said first hooking means, extending said cable means slidably through a guide passage on aid second hooking means which passage is laterally and downwardly off-set with respect to the line of engagement of said second hooking member and said opposite sheet edge, suspending said sheet by raising the opposite end of said cable whereby said sheet is rocked by gravity to a partially inverted position, and lowering said sheet to lie fiat on said surface in an inverted position.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Load-Engaging Elements For Cranes (AREA)
US287070A 1963-01-23 1963-06-11 Apparatus for handling sheets Expired - Lifetime US3219216A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR922344A FR1356294A (fr) 1963-01-23 1963-01-23 Dispositif pour retourner les tôles

Publications (1)

Publication Number Publication Date
US3219216A true US3219216A (en) 1965-11-23

Family

ID=8795325

Family Applications (1)

Application Number Title Priority Date Filing Date
US287070A Expired - Lifetime US3219216A (en) 1963-01-23 1963-06-11 Apparatus for handling sheets

Country Status (5)

Country Link
US (1) US3219216A (id)
BE (1) BE642731A (id)
DE (1) DE1890580U (id)
FR (1) FR1356294A (id)
NL (1) NL6400452A (id)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489970A (en) * 1983-06-06 1984-12-25 Dean Research Corporation Apparatus for lifting heavy metal plate materials
US5600688A (en) * 1995-09-22 1997-02-04 General Electric Company Tool for installing hardware for radially supporting vertical restraint tie rod

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283743B (de) * 1966-10-01 1968-11-21 Weser Ag Vorrichtung zur Kantwendung grossflaechiger Paneelwerkstuecke auf einer Transportbahn
NL1003454C2 (nl) * 1996-06-28 1998-01-07 Gruenbauer G C Bv Ligger en werkwijze en inrichting voor het aanbrengen van een ligger.

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US665499A (en) * 1900-07-09 1901-01-08 Frederick Baldt Ladle.
US846337A (en) * 1902-02-03 1907-03-05 Thomas W Mcfarland Means for drying or curing paper-board.
US1373349A (en) * 1920-03-19 1921-03-29 Charles H Peardon Hopple
US1618557A (en) * 1925-12-30 1927-02-22 Robert J Sims Form-lifting mechanism
US1824027A (en) * 1930-08-01 1931-09-22 Lundquist Alarik Hoisting sling
AT209033B (de) * 1958-09-18 1960-05-10 Voest Ag Krangehänge zum Transport von Blechtafeln od. dgl.
US3034632A (en) * 1960-12-22 1962-05-15 Libbey Owens Ford Glass Co Sheet handling apparatus
US3047916A (en) * 1960-08-19 1962-08-07 United States Steel Corp Container-tilting rigging

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US665499A (en) * 1900-07-09 1901-01-08 Frederick Baldt Ladle.
US846337A (en) * 1902-02-03 1907-03-05 Thomas W Mcfarland Means for drying or curing paper-board.
US1373349A (en) * 1920-03-19 1921-03-29 Charles H Peardon Hopple
US1618557A (en) * 1925-12-30 1927-02-22 Robert J Sims Form-lifting mechanism
US1824027A (en) * 1930-08-01 1931-09-22 Lundquist Alarik Hoisting sling
AT209033B (de) * 1958-09-18 1960-05-10 Voest Ag Krangehänge zum Transport von Blechtafeln od. dgl.
US3047916A (en) * 1960-08-19 1962-08-07 United States Steel Corp Container-tilting rigging
US3034632A (en) * 1960-12-22 1962-05-15 Libbey Owens Ford Glass Co Sheet handling apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489970A (en) * 1983-06-06 1984-12-25 Dean Research Corporation Apparatus for lifting heavy metal plate materials
US5600688A (en) * 1995-09-22 1997-02-04 General Electric Company Tool for installing hardware for radially supporting vertical restraint tie rod

Also Published As

Publication number Publication date
FR1356294A (fr) 1964-03-27
BE642731A (id) 1964-05-15
NL6400452A (id) 1964-07-24
DE1890580U (de) 1964-04-02

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