US2879099A - Hoisting eye with tripping arrangement - Google Patents

Hoisting eye with tripping arrangement Download PDF

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Publication number
US2879099A
US2879099A US410313A US41031354A US2879099A US 2879099 A US2879099 A US 2879099A US 410313 A US410313 A US 410313A US 41031354 A US41031354 A US 41031354A US 2879099 A US2879099 A US 2879099A
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US
United States
Prior art keywords
load
tumbler
locking element
hoisting
eye
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Expired - Lifetime
Application number
US410313A
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English (en)
Inventor
Riedesser Franz
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.)
Papierfabrik Baienfurt A G
PAPIERFABRIK BAIENFURT AG
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Papierfabrik Baienfurt A G
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Publication date
Application filed by Papierfabrik Baienfurt A G filed Critical Papierfabrik Baienfurt A G
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Publication of US2879099A publication Critical patent/US2879099A/en
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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
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/38—Crane hooks adapted for automatic disengagement from loads on release of cable tensions

Definitions

  • This invention relates to a hoisting eye with a tripping arrangement and intended more particularly for hoisting and conveying machinery.
  • An object of the invention is to enable automatic release or opening of the eye when the load is set down.
  • Hoisting eyes are of course known in which the gripping elements are released by spring tension when the load is set down. These hoisting eyes have the disadvantage that attachment of the load for hoisting is difficult because the gripping elements or arms have to be pulled down with considerable force to overcome the tension of the aforesaid springs, in order to be hooked round the hoisting sling or chain or ring.
  • the twin hooks of a hoisting eye have a tendency to open by the pull of the load but are prevented from doing so by a lever-controlled forelock on the slide, which, however, may he accidentally released, when the load is dropped.
  • the arrangement according to the present invention otters the advantage that the gripping elements or arms or hooks only open automatically when the load is set down; there is no danger, particularly when lowering, of the release lever or its controlling means being prematurely actuated by impact or by jamming, so leading to premature opening of the arrangement and dropping of the load.
  • the invention refers to a hoisting eye with tripping means embodying a number not less than two of mutually opposed gripping elements together forming a hoisting eye, one or more of these members being in the form of a two-armed lever hinged to a carrying element or block having a slidable locking element vertically movable in the block and pressed by a spring into theopening position of the gripping elements, with, in addition, a disconnectable element for'raising the slidable locking element into the closing position of the gripping elements against the force of the spring.
  • the lever gripping elements are provided with lugs or stops on which the slidable locking element acts and elfects, by the force of a com pression spring linked on the one hand to the said slidable locking element and .on the other hand to the carrying element or block, the automatic opening of the hoisting eye.
  • Another feature of the invention is a tripping element consisting of a tumbler turnable in the carrying block which tumbler when turned in a particular direction moves the locking element against the force of the compression spring and towards the end stopsof the gripping ice thus cause the other ends of the said grips to close and form the hoisting eye.
  • the invention provides for the motion of the tumbler to be so adjusted that in the closed position a small clearance remains between the locking element and the block, in such manner that when the load comes to bear the block bears on the locking element and the tumbler is relieved.
  • a suitable handle for actuating the tumbler is provided.
  • This handle is so formed that when the tumbler is relieved it falls automatically, by its own weight or by the action of a pre-loaded spring, into its initial position.
  • the invention further provides for the gripping elements to be equipped with lugs or stops suitably projecting through openings into the space provided for the motion of the locking element and so arranged that the spring pressure exerted through such locking element supplies a turning moment to the gripping elements tending to open the hoisting eye.
  • the initial loading of the spring is effected by a sleeve screwing into the block, against which the compression spring abuts.
  • a forelock is provided for holding the elements sufficiently'to cause the latter to move apart and tumbler or the operating handle in the closed position.
  • the invention atiords a considerable saving in time and labor.
  • the loading and unloading of transport vehicles and craft and the servicing of difiicultly accessible spaces is materially simplified by the invention.
  • the hoisting eye according to the invention with tripping arrangement includes only simple structural elements, is thus cheap to manufacture and is reliable in operation even in unfavorable circumstances.
  • Fig. 1 is a view of the illustrated tripping eye in the open position in section along 1--1 of Fig. 2;
  • Fig. 2 is a section along 22 of Fig. 1;
  • Fig. 3 represents the tripping eye in the closed position not under load partly in front view and partly in section along 33 of Fig. 4;
  • Fig. 4 is a section along 44 of Fig. 3;
  • Fig. 5 is a view comparable to Fig. 4, but showing an arrangement of spring means for insuring release of the tumbler when the load is released, the view illustrating the conditions when the hoist is not under load;
  • Fig. 6 is a view similar to the view shown in Fig. 5 illustrating the hoisting eye under conditions of load and wherein a clearance gap exists between the lower bearing surface of the locking element and the flat locking surface of the cam surface of the tumbler;
  • Fig. 7 is a view similar to the view shown in Fig. 6 but illustrating the next succeeding step in the operation of the structure and showing particularly the manner in which the spring means assists in effecting release of the tumbler;
  • Fig. 8 is a vertical sectional view through the hoisting eye with certain of the parts shown in vertical section illustrating the hoisting eye under conditions of load similar to the showing in Fig. 6, and indicating particularly the clearance gap between the lower bearing surface of the locking element and the flat locking surface of the cam surface of the tumbler, the view being taken substantially on line 8-8 of Fig. 9;
  • Fig. 9 is a vertical sectional view taken substantially on line 9--9 of Fig. 8 with certain of the parts shown in elevation, the view depicting the hoisting eye under conditions of load, similar to the showing in Fig.6;
  • Fig. 10 is a perspective view illustrating one of the applications of the hoisting eye of my invention.
  • Fig. 11 is a perspective view showing another application of the hoisting eye of my invention.
  • FIG. 1 indicates the carrying element or the block in which the gripping elements 5, 6 are supported on hinge joints 2, 3. These elements have at their free ends the lugs or stops 7, 8 and are so shaped at their other ends 9, 10 that in the closed position they form an eye 11 (Fig. 3) from which the load can be suspended as represented at 11a in Figs. and 6. Further, the elements have between their ends 7, 9 and 8, 10, lugs or stops 13, 14.
  • the block 1 has between the gripping elements 5, 6 a slidable locking element 16. This is rigidly connected with hoisting means 17, e.g. a lifting hook 17a and hoist chain 17b.
  • the hoisting means 17 connects to the vertically slidable locking element 16 through connecting member 20.
  • the shank of this hook is surrounded by a sleeve or spring housing 18 screwing into the block 1, this sleeve containing a compression spring 19 which abuts at the one end against the interior end of said sleeve and at the other end against a part of the hoisting means 17 such as shoulder 170 on connecting member 21?.
  • the block 1 is fitted with a shank pin 27 carrying a tumbler 26.
  • the reciprocating motion of the locking element 16 is permitted by an oblong slot 28 therein.
  • the tumbler 26 is equipped with a handle 29 which when moved in the direction of the arrow P (Fig. 2) turns the tumbler.
  • '30 denotes the cam face of the tumbler 26, 31 a locking fiat on the cam profile, 32 is a clearance gap, and 33 the lower bearing surface of the locking element.
  • the handle 29 is moved upwards in the direction of the arrow P while the locking element 16 moves along the cam track 30 upwards until its assumes the position shown in Figs. 3 and 4, i.e. until the face 33 of the locking element bears on the flat 31 of the tumbler.
  • the hoisting element 17 with the attached locking element 16 and the block 1 will move apart, overcoming the initial loading of the spring, i.e. the block 1 will move relatively to the locking element, travelling through the distance 32. This will cause the bearing faces 31 and 33 to move apart, releasing the tumbler 26.
  • a spring 35 may be interposed between the tumbler 26 and the block 1 by securing means 36 as shown in Figs. 5-7.
  • the locking element is now free to move in the openmg direction.
  • the load represented at 11a .is set down i.e. when the tension between the hoisting element or the locking element and the block 1 on the suspended load ceases, a return stroke of the locking element is initiated by the pre-compressed spring 19.
  • the block 1 and the locking element 16 now move towards each other 4 and when the locking element strikes the stops 13, 14 the locking element 16 is freed for entry of the end stops 7, 8 and the eye 11 opens automatically.
  • the spring Since it is necessary for the initial compression of the spring 19 to be less than the value of the hoisted load, the spring is adjustable by means of the screwed sleeve or spring housing 18. The spring thus resiliently supports and cushions the hoisted load.
  • Figs. 5-7 I have shown the manner in which cam or tumbler 26 is released and the cam or tumbler 26 permitted to tumble out of loading position when a'load is hoisted.
  • Fig. 5 shows the tumbler or cam 26 in its upper position;
  • Fig. 6 shows the cam or tumbler 26 as the load is hoisted and with the gap between bearing faces 31 and 33; while
  • Fig. 7 shows the manner in which the tumbler gravitates to released position assisted both by the spring 35 connected to block or carrying element 1 and bearing against the cam face 30 of tumbler 26.
  • the variations I have shown in the convolutions of spring 19 are determined by the adjustment of screw threaded sleeve or spring housing 13, screw threaded into block 1 and the conditions of the load and the hoist procedure.
  • the cam or tumbler 26 may either gravitate to released position or be moved by biasing spring 35 to released position when the gap exists as represented at 32 in Fig. 6, or the tumbler 26 may gravitate to released position under the proportioned mass of the manual control member 29 as shown in Fig. 7.
  • Fig. 8 illustrates in elevational and vertical section the relationship of the parts of the hoisting eye under conditions of load where the vertically slidable locking element 16 directly contacts the interior of the top portion of the block or carrying element 1 for lifting the load with the end stops 7 and 8 of the levers extending from elements 5 and 6 extending through the diametrically opposite apertures 38 and 39 of block '1 and slidably engaging the locking element 16 for forcing the jaws 9 and 10 of the eye into abutting relation.
  • Fig. 9 shows more clearly the small gap or clearance 32 which exists between the flat bearing surfaces 31 and i 13 dwhen the hoisting eye operates under condition of
  • Figs. 10 and 11 I have shown applications of the hoisting eye of my invention.
  • the load of logs 42 is being raised and a pair of hoisting eyes shown at 43 and 44 are arranged to grip the cable 45 which loops around the load and which terminates at 46 in a hoisting plate 47 suspended from a cable 48.
  • a single hoisting eye 49 has been shown, suspending a load 50 by means of the chain represented at 11a where the hoisting eye is suspended by the lift hook 17a engaged by the hoisting chain 17b.
  • hoisting eye for loads which automatically opens on setting down the load, comprising a hoisting element, a block having a hollow tubular portion constituting a carrying element supported by said hoisting element, a pair of mutually opposed elements centrally pivoted at diametrically opposed positions on the exterior of said carrying element and having the lower ends thereof movable from a spread position into contacting relation to form a load-engaging means and terminating at the upper ends in levers directed toward each other, a vertically slidable locking element axially slidable concentrically within the hollow tubular portion of said carrying e1ement, a connecting member extending between the upper end of said vertically slidable locking element and the lower end of said hoisting element and vertically movable within the upper part of the hollow tubular portion of said carrying element, a shoulder on said connecting member in a position displaced from said locking element, said hollow tubular portion of said carrying element being apertured on opposite sides thereof for the entry of the ends of said levers therethrough into a path of movement
  • a hoisting eye for loads as set forth in claim 1 in which said locking means consists of a tumbler pivotally positioned in the lower portion of said carrying element, and wherein the surface of said tumbler is a cam so proportioned that in the closed position of the eye a small gap is left between the upper surface of the locking element and the carrying element so that when the load becomes effective the carryingelement raises said locking element from said means for locking said pair of elements in load-engaging position and said tumbler is relieved of load.
  • a hoisting eye for loads as set forth in claim 1 in which said means for locking said pair of elements in load-engaging position is a tumbler pivotally positioned in the lower portion of said carrying element, said tumbler having a cam surface thereon terminating in a flat surface engageable beneath and adapted to support said locking element, and in which a manual control member is provided to operate said tumbler, said manual control member having such distributed mass that when the tumbler is relieved of load, the manual control member is automatically gravitated by its own weight for moving the cam surface of the tumbler out of engaged position with said locking element.
  • a hoisting eye for loads as set forth in claim 1 in which said means for locking said pair of elements in load-engaging position is a tumbler pivotally mounted in the lower portion of said carrying element, said tumbler having a cam surface thereon terminating in a flat surface engageable beneath and adapted to support said locking element and in which a manual control member is provided to operate said tumbler, said manual control member having such distributed mass that when the tumbler is relieved of load the manual control member is automatically gravitated by its own weight for moving the cam surface out of engaged position with said locking element, and spring means interposed between said carrying element and said tumbler for urging said manual control member to a gravitated position.
  • a hoisting eye for loads as set forth in claim 1 in which said carrying element contains additional apertures therein and wherein said pair of mutually opposed elements are provided with intermediate projections extendible through said additional apertures into the path of movement of the locking element, and wherein the spring means for biasing said locking element exerts a force movement on said pair of mutually opposed elements to effect the spreading of the lower terminating ends of said elements when the load on said elements is released.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Load-Engaging Elements For Cranes (AREA)
US410313A 1953-02-18 1954-02-15 Hoisting eye with tripping arrangement Expired - Lifetime US2879099A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE733989X 1953-02-18

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GB (1) GB733989A (cs)
NL (1) NL86015C (cs)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3031222A (en) * 1961-01-18 1962-04-24 Atkinson Guy F Co Lifting device
US4017112A (en) * 1975-04-21 1977-04-12 Callisto Device for releasing a load from its support
DE4113077A1 (de) * 1991-04-22 1992-10-29 Mathias Thesen Werft Gmbh Ausloesevorrichtung fuer eine an einem lasthaken haengende last, insbesondere eine rettungsinsel oder ein rettungsfloss i
ES2123372A1 (es) * 1995-05-04 1999-01-01 Valles Garcia Ruperto Autozafador para manipulacion de cargas.
US20150021050A1 (en) * 2013-07-21 2015-01-22 Foley Engineering, Llc Tubing clamp assembly
US10760601B2 (en) * 2018-08-23 2020-09-01 Shenton J. King Clamping device
CN115924715A (zh) * 2022-12-12 2023-04-07 青岛海米飞驰智能科技有限公司 一种海底观测设备用无绳布放装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114044437B (zh) * 2021-12-08 2023-07-14 中铁建工集团第四建设有限公司 一种起重机吊钩缓冲装置
CN115182386B (zh) * 2022-09-13 2022-11-25 中交第一航务工程局有限公司 顶锁拉脱型连接装置及包含其的沉管施工船
CN118561146B (zh) * 2024-07-31 2024-10-08 新程汽车工业有限公司 一种汽车零部件加工用吊具

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US524696A (en) * 1894-08-21 Device for removing can-holding crates from retorts
US720078A (en) * 1902-04-16 1903-02-10 Washington Smith Fishing implement for oil-wells.
US768253A (en) * 1904-02-04 1904-08-23 John William Watson Adjustable tongs.
US1742767A (en) * 1927-08-10 1930-01-07 Jess W Hughes Shrouded rotary fishing tool
US2493949A (en) * 1946-12-10 1950-01-10 Donahue Joseph Wrench having manually closed spring-opened pivoted jaws

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US524696A (en) * 1894-08-21 Device for removing can-holding crates from retorts
US720078A (en) * 1902-04-16 1903-02-10 Washington Smith Fishing implement for oil-wells.
US768253A (en) * 1904-02-04 1904-08-23 John William Watson Adjustable tongs.
US1742767A (en) * 1927-08-10 1930-01-07 Jess W Hughes Shrouded rotary fishing tool
US2493949A (en) * 1946-12-10 1950-01-10 Donahue Joseph Wrench having manually closed spring-opened pivoted jaws

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3031222A (en) * 1961-01-18 1962-04-24 Atkinson Guy F Co Lifting device
US4017112A (en) * 1975-04-21 1977-04-12 Callisto Device for releasing a load from its support
DE4113077A1 (de) * 1991-04-22 1992-10-29 Mathias Thesen Werft Gmbh Ausloesevorrichtung fuer eine an einem lasthaken haengende last, insbesondere eine rettungsinsel oder ein rettungsfloss i
ES2123372A1 (es) * 1995-05-04 1999-01-01 Valles Garcia Ruperto Autozafador para manipulacion de cargas.
US20150021050A1 (en) * 2013-07-21 2015-01-22 Foley Engineering, Llc Tubing clamp assembly
US9580281B2 (en) * 2013-07-21 2017-02-28 Foley Patents, Llc Tubing clamp assembly
US10760601B2 (en) * 2018-08-23 2020-09-01 Shenton J. King Clamping device
CN115924715A (zh) * 2022-12-12 2023-04-07 青岛海米飞驰智能科技有限公司 一种海底观测设备用无绳布放装置

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Publication number Publication date
GB733989A (en) 1955-07-20
NL86015C (cs)

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