US3749263A - Method for transferring a load from a first support to a second support - Google Patents

Method for transferring a load from a first support to a second support Download PDF

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Publication number
US3749263A
US3749263A US00159317A US3749263DA US3749263A US 3749263 A US3749263 A US 3749263A US 00159317 A US00159317 A US 00159317A US 3749263D A US3749263D A US 3749263DA US 3749263 A US3749263 A US 3749263A
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United States
Prior art keywords
sheet
pallet
air
freight
load
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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
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US00159317A
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English (en)
Inventor
G Foury
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 Generale dAutomatisme SA
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Compagnie Generale dAutomatisme SA
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G1/00—Storing articles, individually or in orderly arrangement, in warehouses or magazines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02—Articles
    • B65G2201/0267—Pallets

Definitions

  • ABSTRACT A load is transferred from a first support to a second support by tensioning a transfer sheet lying between the load and the first support to raise the load from the first support and then a second support is slid under the load to replace the first support prior to releasing the tension on the transfer sheet.
  • the present invention concerns a method and apparatus for transferring a load from a first support to a second support, for example from a first pallet to a second pallet.
  • One application of the invention is in the field of air freight transport, where freight is generally loaded onto pallets of a special type, designed for air transport, which are relatively expensive. It is highly advantageous to insure a rapid turnround of the pallets, so that these are used exclusively for air transport, the amount of time for which they are idle on the ground being reduced to a minimum. It is therefore necessary for the air freight to be transferred from the special pallets onto another support, such as a conventional type of pallet used for surface transport. In this way, the air pallet is available for immediate reuse, receiving a new load and being installed in an aircraft.
  • Loads transported on pallets usually consist of an assembly of diverse packets, parcels and the like held together on a common pallet, for example by means of a net fastened to the edges of the pallet.
  • These mixed charges often have a highly irregular outline, but each pallet load is assembled so as to conform appropriately to the shape of the aircraft in use.
  • the present invention is intended to provide a method and apparatus for transferring a load from a first support to a second support in which no sliding motion intervenes.
  • a method of transferring a load from a first support to a second support when placed between the load and the first support is a transfer sheet sufficiently large for an edge portion to project from at least two opposite sides of the load, the transfer operation comprising the steps of: grasping the projecting edge portions of the transfer sheet and tensioning the sheet to support the load so as to enable the first support to be removed; replacing the first support with the second support; removing the tension from the sheet so as to place the load on the second support; and releasing the sheet edge portions.
  • the invention provides apparatus for transferring a load to a second support from a first support, a transfer sheet being located between the load and the first support and being sufficiently large for an edge portion to project from at least two opposite sides of the load, the apparatus comprising: an arrangement selectively operable to grasp each projecting edge portion of the transfer sheet; means selectively operable to tension the sheet to support the load so as to enable the first support to be removed; and a system for replacing the first support with the second support.
  • FIG. 1 is a schematic view of an air cargo pallet supporting a transfer sheet which, in turn, supports a load.
  • FIG. 2 is a similar schematic view to that of FIG. 1, illustrating the initial step of load transfer.
  • FIG. 2a is a further schematic view of the arrangement of FIGS. 1 and 2 subsequent to lifting of the load from the air pallet, permitting removal of the air pallet.
  • FIG. 3 is a schematic representation illustrating the substitution of a wooden pallet for the air pallet.
  • FIG. 4 is a similar shcematic view to that of the prior figures showing the step of lowering the load onto the wooden pallet by means of the transfer sheet.
  • FIG. 4a is a schematic view of an alternate method of lifting the load relative to the underlying pallet.
  • FIG. 5 is a further schematic view similar to that of FIGS. l-4a, illustrating the release of the transfer sheet by the jaw assemblies after depositing the load onto the wooden pallet.
  • FIG. 6 is a plan view of the transfer apparatus.
  • a first support 10 carries a load 11.
  • the support 10 is an air cargo pallet having upper and lower horizontal surfaces spaced to permit the pallet and its load to be lifted by a fork-lift truck.
  • a mechanically strong transfer sheet 12 is placed between the pallet 10 and load 11 and is sufficiently large for respective edge portions 12a and 12b to project from opposite sides of the load.
  • the transfer sheet 12 is preferably rectangular, and may project beyond the load on more than two sides, where appropriate.
  • the transfer operation begins by grasping the projecting edge portions 12a and 12b and tensioning the sheet 12 to support the load 11 so as to enable the pallet 10 to be removed.
  • each jaw assembly may consist of a set of individual jaws arranged to grasp respective portions of the sheet edge portions.
  • the sheet 12 may be tensioned by displacing the jaw assemblies 21 and 22 as indicated by the arrows in FIG. 2.
  • the sheet may be tensioned by moving the pallet 10 downwardly away from the load 11. In-either case, the pallet 10 may then be removed, the load ll being supported on the tensioned sheet 12.
  • tensioning may also be achieved by a combination of displacing one or both of the jaw assemblies and lowering of the pallet 10.
  • each jaw assembly consists of a set of individual jaws
  • these may be individually displaceable to provide a variation in the tension applied to the sheet along the respective edge portion. This is particularly advantageous for mixed loads in which the weight distribution is highly irregular.
  • the tension applied to the sheet may be controlled by means of a dynamometer.
  • jaw assemblies 21 and 22 may be displaceable horizontally away from the load 11, or vertically, rather than in an inclined direction as shown in FIG. 2.
  • FIG. 3 shows the substitution of a second support in the form of a wooden pallet 30 of conventional construction for the first support in the form of the air cargo pallet 10.
  • the tension is then removed from the sheet 12, by the reverse of the operation by which the sheet was initially tensioned.
  • the jaw assemblies 21 and 22 will be moved as shown in FIG. 4 to lower the load 11 onto the pallet 30, the pallet 30 will be raised to contact the load 11, or a combination of these two operations will be effected.
  • the sheet edge portions are then released to leave the load 11 supported on the pallet 30, as shown in FIG. 5.
  • the transfer sheet 12 is of a relatively flexible but mechanically strong material, and may consist, for example, of a thin sheet of metal, either perforated or unperforated, or of welded wires or cables. More specifically, a steel sheet of 0.5 millimetres thickness and of ordinary commercial quality may be used.
  • each edge portions 12a and 12b may be folded back upon themselves for a distance of some few centimetres, both to provide stiffening and to avoid a sharp edge at these points.
  • a steel or other metal rod may be retained in each fold, to further stiffen the edge portions and to further facilitate the grasping thereof.
  • the extreme edge portions of the sheet may be provided with hooks, rings or the like by means of which they may be attached to the load during transport.
  • the sheet may be given an anti-skid treatment on one or both sides,by means of embossed patterns or any other suitable arrangement.
  • the jaw assemblies 21 and 22 may be hydraulic, screw-operated or driven in such other way as is known to those skilled in the art.
  • FIG. 6 is a plan view of the apparatus for transferring the load from the air pallets to the ground pallets 30.
  • a first conveyor 40 passes loaded pallets 10 through a station 42 where the sheet edge portions 12a and 12b are folded down to a transfer station 44 incorporating the sheet edge grasping arrangement and tensioning system.
  • a second conveyor 46 removes unladen pallets l0, and a third conveyor 45 passes unladen pallets 30 to the transfer station 44.
  • the loaded pallets 30 pass from the transfer station 44 through a station 47 in which the sheet edge portions are folded to flank the load.
  • the second and third conveyors may be associated with respective systems for stacking the unladen pallets 10 and removing the unladen pallets 30 from a stack.
  • the four conveyors may be endless belts, roller conveyors, or conveyors using motor-driven wheeled chariots, or of any from suitable to each particular application.
  • the transfer station may include means for weighing each load.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pallets (AREA)
  • Stacking Of Articles And Auxiliary Devices (AREA)
US00159317A 1970-07-02 1971-07-02 Method for transferring a load from a first support to a second support Expired - Lifetime US3749263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7024561A FR2112025B1 (enrdf_load_stackoverflow) 1970-07-02 1970-07-02

Publications (1)

Publication Number Publication Date
US3749263A true US3749263A (en) 1973-07-31

Family

ID=9058177

Family Applications (1)

Application Number Title Priority Date Filing Date
US00159317A Expired - Lifetime US3749263A (en) 1970-07-02 1971-07-02 Method for transferring a load from a first support to a second support

Country Status (8)

Country Link
US (1) US3749263A (enrdf_load_stackoverflow)
BE (1) BE769113A (enrdf_load_stackoverflow)
CA (1) CA940477A (enrdf_load_stackoverflow)
DE (1) DE2132971A1 (enrdf_load_stackoverflow)
FR (1) FR2112025B1 (enrdf_load_stackoverflow)
GB (1) GB1357794A (enrdf_load_stackoverflow)
LU (1) LU63441A1 (enrdf_load_stackoverflow)
NL (1) NL7109011A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883013A (en) * 1972-04-19 1975-05-13 Mitsubishi Heavy Ind Ltd Apparatus of applying skids of grating structure and removing the same
AU640628B2 (en) * 1989-02-15 1993-09-02 Transfresh Corporation Method and apparatus for bagging product units
CN114044158A (zh) * 2021-11-29 2022-02-15 浙江图盛输变电工程有限公司温州科技分公司 基于人工智能图像识别的无人机自动驾驶系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514098A (en) * 1947-11-06 1950-07-04 Byron L Shreiner Meat and fowl turner and lifter
US2702140A (en) * 1953-03-13 1955-02-15 Joe B Momyer Yoke for lift trucks and flexible pallet
US2913205A (en) * 1956-02-27 1959-11-17 Theodore J Desbois Pallet
US2973218A (en) * 1959-07-30 1961-02-28 Clyde F Schaum Lifter
GB957236A (en) * 1961-03-28 1964-05-06 John Henry Kemp Improvements in or relating to methods and apparatus for the transfer of loads of parcelled or packaged goods
US3622025A (en) * 1969-12-22 1971-11-23 Arnold C Petersen Mobile boat-handling apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2514098A (en) * 1947-11-06 1950-07-04 Byron L Shreiner Meat and fowl turner and lifter
US2702140A (en) * 1953-03-13 1955-02-15 Joe B Momyer Yoke for lift trucks and flexible pallet
US2913205A (en) * 1956-02-27 1959-11-17 Theodore J Desbois Pallet
US2973218A (en) * 1959-07-30 1961-02-28 Clyde F Schaum Lifter
GB957236A (en) * 1961-03-28 1964-05-06 John Henry Kemp Improvements in or relating to methods and apparatus for the transfer of loads of parcelled or packaged goods
US3622025A (en) * 1969-12-22 1971-11-23 Arnold C Petersen Mobile boat-handling apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883013A (en) * 1972-04-19 1975-05-13 Mitsubishi Heavy Ind Ltd Apparatus of applying skids of grating structure and removing the same
AU640628B2 (en) * 1989-02-15 1993-09-02 Transfresh Corporation Method and apparatus for bagging product units
CN114044158A (zh) * 2021-11-29 2022-02-15 浙江图盛输变电工程有限公司温州科技分公司 基于人工智能图像识别的无人机自动驾驶系统
CN114044158B (zh) * 2021-11-29 2024-06-04 浙江图盛输变电工程有限公司温州科技分公司 基于人工智能图像识别的无人机自动驾驶系统

Also Published As

Publication number Publication date
BE769113A (fr) 1971-12-28
GB1357794A (en) 1974-06-26
FR2112025B1 (enrdf_load_stackoverflow) 1974-03-22
DE2132971A1 (de) 1972-01-05
FR2112025A1 (enrdf_load_stackoverflow) 1972-06-16
CA940477A (en) 1974-01-22
NL7109011A (enrdf_load_stackoverflow) 1972-01-04
LU63441A1 (enrdf_load_stackoverflow) 1972-03-21

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