US3362744A - Device for use with slings, particularly bag slings for use in unit loading - Google Patents

Device for use with slings, particularly bag slings for use in unit loading Download PDF

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Publication number
US3362744A
US3362744A US525061A US52506166A US3362744A US 3362744 A US3362744 A US 3362744A US 525061 A US525061 A US 525061A US 52506166 A US52506166 A US 52506166A US 3362744 A US3362744 A US 3362744A
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US
United States
Prior art keywords
lever
slings
locking
strap
sling
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
US525061A
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English (en)
Inventor
Ek Bengt Arne Arvid
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.)
GOTEBORGS BANDVAVERI AB
Original Assignee
Goeteborga Bandvaeveri
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 Goeteborga Bandvaeveri filed Critical Goeteborga Bandvaeveri
Application granted granted Critical
Publication of US3362744A publication Critical patent/US3362744A/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
    • B66C1/18—Band-type slings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3936—Pivoted part
    • Y10T24/394—Cam lever
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/40—Buckles
    • Y10T24/4072—Pivoted lever

Definitions

  • the invention is a buckle for slings wherein a selflocking catch is provided which when in locking position is contained within the contour line of the buckle. Means are provided for easily releasing the self-locking catch and to hold it in such released position.
  • This invention relates to a device at slings particularly so-called bag slings intended for use in unit loading, i.e. slings which are maintained on the load from application until the load has reached its destination and which, if needed, can be used during transport for re-stowage.
  • Slings of this type comprise a strap, provided at one end with a suspension loop and at the other end with a locking device consisting of a metal buckle through which passes the loop end of the strap.
  • the object of the present invention is to provide a sling in which all these requirements are fulfilled, viz. a sling which has an automatically tightening grip around the load at lifting action, which does not slide off the load at depositing thereof, and which can be easily released from the load whenever desired.
  • the device according to the invention is characterised by a spring loaded locking lever arranged to press the strap traveling in the metal buckle into firmly gripping engagement with said buckle at a point situated a minor distance above the line connecting the central point of the locking lever axis with the central point of that part of the metal buckle with which the locking lever is arranged to engage in the locking position, the locking lever and its spring being arranged in such a way that in the locking position they are contained within the contour lines of the metal buckle.
  • FIG. 1 shows the sling according to the invention, encircling a load
  • FIG. 2 is a fragmentary plan view of the locking device for the sling, with some parts broken away, and
  • FIG. 3 is a section of the sling as illustrated in FIG. 2.
  • the sling according to the invention consists of a strap 1 arranged to be wrapped around the load 2.
  • the strap 1 has a loop 3 by means of which the strap is suspended in a lifting hook 4 of a hoisting crane, not shown.
  • the strap 1 is provided with a locking device 5 arranged to be passed around the loop end 3 of the strap when the sling has been placed around the load 2.
  • the locking device 5 consists of a rectangular metal buckle 6 which, according to the illustrated modification, comprises two side parts 7 and 8 interconnected through transverse metal pins 9 and 10.
  • a locking lever 13, operated by a spring 12 is journalled about an axis 11 arranged between the pins 9 and 1t) and parallel thereto, one end 14 of the locking lever 13 being urged by the spring 12 to engage with the pin 10 at a point situated, as can be seen in FIG. 3, somewhat above an imaginary line interconnecting the central points of the pins 9 and 10.
  • the attachment of the sling around the load takes place in the following manner.
  • the loop end 3 of the strap is inserted from underneath (with relation to FIG. 3) between the end 14 of the locking lever 13 and the metal pin 10, and the strap 1 can then be tightened around the load 2 usually consisting of one or more bags, so that upon pulling movement of the strap 1 in this direction the locking lever 13 is turned upwards against the action of the spring 12, the end 14 of the lever swinging into its upper, releasing position.
  • This upward movement of the lever 13 thus occurs when the load is being lifted, the angle or automatically adjusting itself to 120.
  • a lever 17 (FIG. 3) is journalled about an axis 16, one end 18 of said lever 17 exerting pressure on the locking lever end 15 so as to swing it downwards (with relation to FIG. 3) whereby the strap 1 is released.
  • the sling is extended to such a degree that its thickness is approximately 2.5 mm.
  • a locking intensity of 200-300 kilos is obtained. It is readily understood that considerable power is required to nullify a locking intensity of this kind and, in order that separate tools be dispensed with, special steps must be taken, as in the device according to the invention.
  • the invention is not limited to the embodiment as illustrated in the drawing and described in the foregoing but several modifications thereof are possible Within the scope of the appended claims.
  • the axis 11, for instance, might have such cross section as to enable it to cooperate with the blades forming the locking lever 13, thus providing the spring action required to secure the strap 1 against the pin 10.
  • the rectangular metal buckle 6 can be shaped in many difierent ways.
  • the lever 17 might be spring actuated to assist in pressing the locking lever end 14 against the pin it).
  • a sling arrangement particularly bag slings comprising a strap having one suspension loop end and one locking device end, a locking device comprising a metal buckle to be passed over said suspension loop end of said strap, a locking lever pivotally mounted in said buckle, a spring urging said lever to press said strap running in said metal buckle into gripping engagement with said metal buckle at a point situated a short distance above the line connecting the central point of the axis of said locking lever with the central point of the metal buckle part with which said locking lever is arranged to engage in the locking position, said locking lever and said spring when in locking position being located within the contour lines of said metal buckle and a pivoted lever is located within said buckle adjacent said locking lever to force said locking lever out of gripping engagement with said strap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Clamps And Clips (AREA)
US525061A 1965-02-27 1966-02-04 Device for use with slings, particularly bag slings for use in unit loading Expired - Lifetime US3362744A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE259365 1965-02-27

Publications (1)

Publication Number Publication Date
US3362744A true US3362744A (en) 1968-01-09

Family

ID=20260243

Family Applications (1)

Application Number Title Priority Date Filing Date
US525061A Expired - Lifetime US3362744A (en) 1965-02-27 1966-02-04 Device for use with slings, particularly bag slings for use in unit loading

Country Status (4)

Country Link
US (1) US3362744A (US07534539-20090519-C00280.png)
DE (1) DE1456464B2 (US07534539-20090519-C00280.png)
GB (1) GB1065471A (US07534539-20090519-C00280.png)
NL (1) NL6601258A (US07534539-20090519-C00280.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432201A (en) * 1967-08-28 1969-03-11 William D Hadley Choker hook locking chain
US4856836A (en) * 1987-11-13 1989-08-15 Conoco Inc. Sling assembly for use with a crane
EP1114787A1 (en) * 2000-01-04 2001-07-11 Giancarlo Piermartiri A weight-lifting belt provided with self-locking buckle

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2499521A1 (fr) * 1981-02-09 1982-08-13 Stas Soc Tech Access Spec Sangle de bottelage
DE10026982A1 (de) * 2000-05-31 2001-12-13 Messer Griesheim Gmbh Frankfur Transporthilfe für Druckgasflaschen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US292934A (en) * 1884-02-05 Edmund e
US416985A (en) * 1889-12-10 James beattie
GB329439A (en) * 1929-03-21 1930-05-22 William Howard Boase An improved sling grip for handling goods

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US292934A (en) * 1884-02-05 Edmund e
US416985A (en) * 1889-12-10 James beattie
GB329439A (en) * 1929-03-21 1930-05-22 William Howard Boase An improved sling grip for handling goods

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432201A (en) * 1967-08-28 1969-03-11 William D Hadley Choker hook locking chain
US4856836A (en) * 1987-11-13 1989-08-15 Conoco Inc. Sling assembly for use with a crane
EP1114787A1 (en) * 2000-01-04 2001-07-11 Giancarlo Piermartiri A weight-lifting belt provided with self-locking buckle

Also Published As

Publication number Publication date
NL6601258A (US07534539-20090519-C00280.png) 1966-08-29
DE1456464B2 (de) 1970-02-26
GB1065471A (en) 1967-04-19
DE1456464A1 (de) 1968-12-12

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