GB2045067A - A method and apparatus for handling sacks - Google Patents

A method and apparatus for handling sacks Download PDF

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Publication number
GB2045067A
GB2045067A GB8001410A GB8001410A GB2045067A GB 2045067 A GB2045067 A GB 2045067A GB 8001410 A GB8001410 A GB 8001410A GB 8001410 A GB8001410 A GB 8001410A GB 2045067 A GB2045067 A GB 2045067A
Authority
GB
United Kingdom
Prior art keywords
sack
mouth
strip
rigidifying
sacks
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.)
Granted
Application number
GB8001410A
Other versions
GB2045067B (en
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.)
Sodra Skogsagarna AB
Original Assignee
Sodra Skogsagarna AB
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 Sodra Skogsagarna AB filed Critical Sodra Skogsagarna AB
Publication of GB2045067A publication Critical patent/GB2045067A/en
Application granted granted Critical
Publication of GB2045067B publication Critical patent/GB2045067B/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/0061—Electrical connection means
    • G01L19/0084—Electrical connection means to the outside of the housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/14—Suspension means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/14—Housings
    • G01L19/142—Multiple part housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
  • Prostheses (AREA)
  • Fertilizing (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Replacement Of Web Rolls (AREA)
  • Auxiliary Apparatuses For Manual Packaging Operations (AREA)

Abstract

In the handling of sacks the stretched out mouth (11) of the filled sack (10) is rolled at least one and a half turns about a rigidifying strip (12) and is fixed in the rolled-up state about this strip eg by stapling. The rolled-up mouth is passed down into an upwardly- open groove (17) in a lifting device (15) preferably a U-profile. The groove (17) is of but slightly greater width than the thickness of the rolled-up mouth (11) so that this is locked in the groove (17) on lifting of the sack by means of the lifting device. <IMAGE>

Description

SPECIFICATION A method and apparatus for handling sacks, in particular paper sacks In the handling of sacks, in particular large sacks of paper, difficulties have been experienced in lifting the sack without ruptures occurring in the sack material. This problem is particularly manifest if the sack is closed by means of puckering together its mouth and if the sack is then lifted in the puckered mouth by means of so-called knot lifting.
The object of the present invention is to realize a simple method and a simple apparatus for handling sacks, in particular paper sacks, so that the risks of rupture in the sack material are considerably reduced, and so that the full strength of the sacks may better be utilized.
Thus, the present invention relates to a method and an apparatus for handling sacks, in particular paper sacks, the sack being provided with a handling applicance and being handled by means of a lifting device. The characteristic features of the method and apparatus, respectively, according to the invention are disclosed in the appended claims.
In the handling of the sacks, in particular paper sacks, the stretched mouth of the filled sack is rolled at least one and a half turns about a rigidifying strip, and this mouth is fixed in the rolled-up state about the rigidifying strip. When the sack is to be handled, the mouth which has been rolled about the rigidifying strip and fixed in position is passed down into an upwardly facing groove in a lifting device which is preferably in the form of a U-shaped channel profile.
The upwardly facing groove is of but slightly greater width than the thickness of the rigidifying strip and the mouth of the sack which is rolled about the strip, such that this mouth is locked on the groove when the sack is lifted by means of the lifting device. Thus, as a result of the present invention, the stresses on the sack material will be distributed throughout a greater width of the sack material with the result that it has been possible to increase considerably the lifting strength of the sack, in certain cases by a factor of three and more.
The nature of the present invention and its aspects will be more readily understood from the following brief description of the accompanying drawings, and discussion relating thereto.
In the accompanying drawings: Figure 1 is a perspective view of a filled sack, once the mouth of the sack has been stretched out; Figure 2 is an end view of the stretched-out sack mouth which has been rolled about a rigidifying strip; Figure 3 is a perspective view of this rolled-up mouth; Figure 4 is a perspective view of the upper region of a sack once the sealed mouth has been folded down along the sides of the sack; Figure 5 is a perspective view of a lifting device included in the apparatus according to the present invention; Figure 6shows in perspective how the lifting device is coupled to the filled sack; and Figure 7 is a section taken along the line VII-VII in Figure 6.
As will be apparent from Figure 1, after the filling of a sack which in this case is a paper sack, the mouth 11 of the filled sack 10 is to be stretched-out and a rigidifying strip 12 isto be placed against the mouth. The rigidifying strip 12 may consist of a strip of board. After the stretching operation, the mouth 11 is rolled at least one and a half turns about the rigidifying strip 12, as is illustrated in Figure 2. Figure 3 shows that the mouth 11 rolled around the rigidifying strip 12 is fixed in the rolled-up state by means of staples 13. In the illustrated embodiment, these staples have been applied outside the rigidifying strip, but they could also be caused to penetrate it.
As will be appreciated from Figure 1, the rigidifying strip 12 is of approximately the same length as the width of the filled sack. The reason for this is that it should be possible, on storage and transport of the filled sack, to fold down, as is shown in Figure 4, the outer ends of the sack mouth into engagement with the sides of the filled sack for being fixed thereagainst, for example by means of adhesive tape 14.
Figure 5 shows a lifting device 15 included in the apparatus according to the invention. This lifting device has, in the illustrated embodiment, the form of a U-profile 16 with an upwardly facing groove 17.
A lifting eye 18 is secured to one shank of the U-profile. The groove 17 is preferably of slightly lesser depth than the width of the rigidifying strip 12.
As a result, the rigidifying strip and the mouth 11 of the sack which has been rolled about the strip will be effectively drawn down into the groove 17 and locked in this position when the lifting device 15, as shown in Figure 6 and 7, is utilized for lifting the sack. When the sack is to be lifted by means of the lifting device, the mouth 11 of the sack rolled about the rigidifying strip 12 is passed down into the upwardly-open groove 17, mouth being effectively drawn down into the groove and held fixedly secured therein during the lifting operation. In order to make possible a reliable locking effect, the groove 17 is preferably of but slightly greater width than the thickness of the rigidifying strip 12 and the mouth 11 of the sack 10 rolled about the rigidifying strip.
When the paper sacks which in so-called knot lifting, could not manage more than approximately 200 kg, were trail lifted, it proved that the method and apparatus according to the present invention made possible the lifting of 600 kg, with the same sack wall construction. This involves an improvement in the lifting strength by a factor of 3.
The lifting apparatus according to the invention is very economical to manufacture, easy to handle and is of low construction height, since it need not, in actual fact, be much higher than the U-profile. The rigidifying strips utilized are also cheap to manufacture, since they may consist of normal board material or plastic sheet strips.
1. A method in the handling of sacks, in particular paper sacks, in which the sack is provided with a
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (8)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION A method and apparatus for handling sacks, in particular paper sacks In the handling of sacks, in particular large sacks of paper, difficulties have been experienced in lifting the sack without ruptures occurring in the sack material. This problem is particularly manifest if the sack is closed by means of puckering together its mouth and if the sack is then lifted in the puckered mouth by means of so-called knot lifting. The object of the present invention is to realize a simple method and a simple apparatus for handling sacks, in particular paper sacks, so that the risks of rupture in the sack material are considerably reduced, and so that the full strength of the sacks may better be utilized. Thus, the present invention relates to a method and an apparatus for handling sacks, in particular paper sacks, the sack being provided with a handling applicance and being handled by means of a lifting device. The characteristic features of the method and apparatus, respectively, according to the invention are disclosed in the appended claims. In the handling of the sacks, in particular paper sacks, the stretched mouth of the filled sack is rolled at least one and a half turns about a rigidifying strip, and this mouth is fixed in the rolled-up state about the rigidifying strip. When the sack is to be handled, the mouth which has been rolled about the rigidifying strip and fixed in position is passed down into an upwardly facing groove in a lifting device which is preferably in the form of a U-shaped channel profile. The upwardly facing groove is of but slightly greater width than the thickness of the rigidifying strip and the mouth of the sack which is rolled about the strip, such that this mouth is locked on the groove when the sack is lifted by means of the lifting device. Thus, as a result of the present invention, the stresses on the sack material will be distributed throughout a greater width of the sack material with the result that it has been possible to increase considerably the lifting strength of the sack, in certain cases by a factor of three and more. The nature of the present invention and its aspects will be more readily understood from the following brief description of the accompanying drawings, and discussion relating thereto. In the accompanying drawings: Figure 1 is a perspective view of a filled sack, once the mouth of the sack has been stretched out; Figure 2 is an end view of the stretched-out sack mouth which has been rolled about a rigidifying strip; Figure 3 is a perspective view of this rolled-up mouth; Figure 4 is a perspective view of the upper region of a sack once the sealed mouth has been folded down along the sides of the sack; Figure 5 is a perspective view of a lifting device included in the apparatus according to the present invention; Figure 6shows in perspective how the lifting device is coupled to the filled sack; and Figure 7 is a section taken along the line VII-VII in Figure 6. As will be apparent from Figure 1, after the filling of a sack which in this case is a paper sack, the mouth 11 of the filled sack 10 is to be stretched-out and a rigidifying strip 12 isto be placed against the mouth. The rigidifying strip 12 may consist of a strip of board. After the stretching operation, the mouth 11 is rolled at least one and a half turns about the rigidifying strip 12, as is illustrated in Figure 2. Figure 3 shows that the mouth 11 rolled around the rigidifying strip 12 is fixed in the rolled-up state by means of staples 13. In the illustrated embodiment, these staples have been applied outside the rigidifying strip, but they could also be caused to penetrate it. As will be appreciated from Figure 1, the rigidifying strip 12 is of approximately the same length as the width of the filled sack. The reason for this is that it should be possible, on storage and transport of the filled sack, to fold down, as is shown in Figure 4, the outer ends of the sack mouth into engagement with the sides of the filled sack for being fixed thereagainst, for example by means of adhesive tape 14. Figure 5 shows a lifting device 15 included in the apparatus according to the invention. This lifting device has, in the illustrated embodiment, the form of a U-profile 16 with an upwardly facing groove 17. A lifting eye 18 is secured to one shank of the U-profile. The groove 17 is preferably of slightly lesser depth than the width of the rigidifying strip 12. As a result, the rigidifying strip and the mouth 11 of the sack which has been rolled about the strip will be effectively drawn down into the groove 17 and locked in this position when the lifting device 15, as shown in Figure 6 and 7, is utilized for lifting the sack. When the sack is to be lifted by means of the lifting device, the mouth 11 of the sack rolled about the rigidifying strip 12 is passed down into the upwardly-open groove 17, mouth being effectively drawn down into the groove and held fixedly secured therein during the lifting operation. In order to make possible a reliable locking effect, the groove 17 is preferably of but slightly greater width than the thickness of the rigidifying strip 12 and the mouth 11 of the sack 10 rolled about the rigidifying strip. When the paper sacks which in so-called knot lifting, could not manage more than approximately 200 kg, were trail lifted, it proved that the method and apparatus according to the present invention made possible the lifting of 600 kg, with the same sack wall construction. This involves an improvement in the lifting strength by a factor of 3. The lifting apparatus according to the invention is very economical to manufacture, easy to handle and is of low construction height, since it need not, in actual fact, be much higher than the U-profile. The rigidifying strips utilized are also cheap to manufacture, since they may consist of normal board material or plastic sheet strips. CLAIMS
1. A method in the handling of sacks, in particular paper sacks, in which the sack is provided with a handling appliance and is handled by means of a lifting device, wherein the mouth of the filled sack is stretched out, is rolled at least one and a half turns about a rigidifying strip serving as handling appliance, the length of the strip corresponding approximately to the width of the filled sack, and is thereafter fixed in the rolled-up state about the rigidifying strip, and wherein the mouth of the sack fixed about the rigidifying strip is, on handling of the sack, passed down into an upwardly-open groove provided in the lifting device, the groove being of but slightly greater width than the thickness of the mouth fixed about the rigidifying strip.
2. The method as claimed in claim 1,wherein the lifting device is designed as a U-profiie which is preferably of approximately the same length as that ofthe rigidifying strip.
3. The method as claimed in claim 1 or 2, wherein the rigidifying strip is designed slightly wider than the depth of the groove provided in the lifting device.
4. An apparatus for carrying out the method as claimed in claim 1,2 or 3, comprising a handling appliance for application on a sack, primarily a paper sack, and a lifting device for the sack, wherein the handling appliance consists of a rigidifying strip for rolling-in at least one and a half turns of the stretched out mouth of the filled sack, the length of the rigidifying strip corresponding approximately to the width of the filled sack, and wherein the lifting device has an upwardly-open groove which is of but slightly greater width than the total thickness of the rigidifying strip and the mouth of the sack rolled thereabout, and into which groove the mouth of the sackfixed about the rigidifying strip isto be passed on handling of the sack by means of the lifting device.
5. The apparatus as claimed in claim 4, wherein the lifting device is in the form of a U-profile provided with at least one anchorage for lifting means, the profile having preferably approximately the same length as the rigidifying strip.
6. The apparatus as claimed in claim 4 or 5, wherein the rigidifying strip is slightly wider than the depth of the groove provided in the lifting device.
7. A method in the handling of sacks, in particular paper sacks, to be performed substantially as hereinbefore described with particular reference to the accompanying drawings.
8. An apparatus in the handling of sacks, in particular paper sacks, to be constructed substantially as hereinbefore described with particular reference to the accompanying drawings.
GB8001410A 1979-02-05 1980-01-16 Method and apparatus for handling sacks Expired GB2045067B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7900983A SE7900983L (en) 1979-02-05 1979-02-05 SET AND DEVICE FOR HANDLE CONTROLS, Separate Paper Sacks

Publications (2)

Publication Number Publication Date
GB2045067A true GB2045067A (en) 1980-10-29
GB2045067B GB2045067B (en) 1983-02-09

Family

ID=20337202

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8001410A Expired GB2045067B (en) 1979-02-05 1980-01-16 Method and apparatus for handling sacks

Country Status (10)

Country Link
BE (1) BE880689A (en)
CH (1) CH645312A5 (en)
DE (1) DE2950282A1 (en)
DK (1) DK146090C (en)
FI (1) FI65048C (en)
FR (1) FR2447873B1 (en)
GB (1) GB2045067B (en)
NL (1) NL7909305A (en)
NO (1) NO151887C (en)
SE (1) SE7900983L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2843690A1 (en) * 2002-08-21 2004-02-27 Alain Collard Handle for holding, suspending and transporting articles of various shapes has fastening members for adjustable strap
CN111301779A (en) * 2020-02-25 2020-06-19 浙江工业大学 Stacking device and stacking method for wine jar sealing material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10013139A1 (en) * 2000-03-17 2001-09-20 Rovema Gmbh Resealable package has side folds at the base, but no side folds at the top, producing flat top surface over which rib and groove system for resealing extends

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH267122A (en) * 1946-11-25 1950-03-15 Cottarelli Vellani Rosetta Support and closing device for paper material envelopes.
GB771502A (en) * 1954-12-24 1957-04-03 Bibby & Baron Ltd Improvements relating to paper bags
US3512701A (en) * 1968-08-05 1970-05-19 Ctp Ind Inc Hook adapter for carrier bag handle
FI52202C (en) * 1969-04-03 1981-11-27 Schauman Wilh Oy BAER- OCH TILLSLUTNINGSANORDNING FOER PAOSAR OCH SAECKAR
DE7421923U (en) * 1974-06-27 1974-12-19 Popp Eugen Closing and supporting terminal strip elements pair for carrier bags, foil bags, sacks and the like

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2843690A1 (en) * 2002-08-21 2004-02-27 Alain Collard Handle for holding, suspending and transporting articles of various shapes has fastening members for adjustable strap
CN111301779A (en) * 2020-02-25 2020-06-19 浙江工业大学 Stacking device and stacking method for wine jar sealing material

Also Published As

Publication number Publication date
BE880689A (en) 1980-04-16
CH645312A5 (en) 1984-09-28
FI800083A (en) 1980-08-06
SE7900983L (en) 1980-08-06
DE2950282A1 (en) 1980-08-14
DK24180A (en) 1980-08-06
FI65048B (en) 1983-11-30
FI65048C (en) 1984-03-12
NO151887B (en) 1985-03-18
DK146090B (en) 1983-06-27
FR2447873A1 (en) 1980-08-29
NL7909305A (en) 1980-08-07
FR2447873B1 (en) 1986-05-16
NO151887C (en) 1985-06-26
DK146090C (en) 1984-01-23
NO800273L (en) 1980-08-06
GB2045067B (en) 1983-02-09

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950116