FR2520711A1 - IMPROVEMENTS IN LATCH HOOKS - Google Patents

IMPROVEMENTS IN LATCH HOOKS Download PDF

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Publication number
FR2520711A1
FR2520711A1 FR8201943A FR8201943A FR2520711A1 FR 2520711 A1 FR2520711 A1 FR 2520711A1 FR 8201943 A FR8201943 A FR 8201943A FR 8201943 A FR8201943 A FR 8201943A FR 2520711 A1 FR2520711 A1 FR 2520711A1
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France
Prior art keywords
hook
latch
opening
spout
lock
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
FR8201943A
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French (fr)
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FR2520711B1 (en
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to FR8201943A priority Critical patent/FR2520711B1/en
Priority to EP83400216A priority patent/EP0085631A1/en
Publication of FR2520711A1 publication Critical patent/FR2520711A1/en
Application granted granted Critical
Publication of FR2520711B1 publication Critical patent/FR2520711B1/en
Expired 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
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)

Abstract

LA PRESENTE INVENTION A POUR OBJET UN CROCHET COMPORTANT UN LINGUET DE SECURITE QUI EST MONTE PIVOTANT SUR LE CORPS DU CROCHET DE FACON A POUVOIR S'APPLIQUER SUR LE BEC DE CE CROCHET ET FERMER L'OUVERTURE DE CELUI-CI, ET UN VERROU QUI EST DISPOSE A L'ARRIERE DU CROCHET ET DONT UN BEC PEUT S'ENGAGER DANS UNE OUVERTURE PREVUE DANS LA PARTIE CENTRALE DU LINGUET LORSQUE CELUI-CI EST EN POSITION DE SECURITE. SELON L'INVENTION, LE LINGUET 4 COMPORTE, A SA PARTIE ARRIERE, UN BOSSAGE 4B PROPRE A VENIR EN BUTEE CONTRE LE VERROU 7, CE QUI LIMITE LE PIVOTEMENT DU LINGUET ET EN CE QUE LE CORPS 1 DU CROCHET EST CONFORME DE MANIERE A PERMETTRE AU VERROU DE PIVOTER D'UN ANGLE SUFFISANT POUR QUE SON BEC 9 SE DEGAGE DE L'OUVERTURE 10 DU LINGUET EN POSITION DE SECURITE, MAIS INSUFFISANT POUR QU'IL VIENNE EN DEHORS DU TRAJET DU BOSSAGE 4A DE CE LINGUET.THE SUBJECT OF THE PRESENT INVENTION IS A HOOK INCLUDING A SAFETY TONG WHICH IS PIVOTALLY MOUNTED ON THE BODY OF THE HOOK IN A WAY TO BE ABLE TO APPLY TO THE SPOUT OF THIS HOOK AND CLOSE THE OPENING OF THIS HOOK, AND A LOCK WHICH IS ARRANGED AT THE REAR OF THE HOOK AND OF WHICH A BEC CAN ENGAGE IN AN OPENING PROVIDED IN THE CENTRAL PART OF THE LINGUET WHEN IT IS IN THE SAFETY POSITION. ACCORDING TO THE INVENTION, THE LINGUET 4 INCLUDES, AT ITS REAR PART, A BOSS 4B OWN TO COME INTO STOP AGAINST LOCK 7, WHICH LIMITS THE PIVOTING OF THE LINGUET AND IN THAT THE BODY 1 OF THE HOOK IS CONFORMED SO AS TO ALLOW TO THE LATCH TO PIVOT BY AN ANGLE SUFFICIENT FOR ITS SPOUT 9 TO FREE FROM THE OPENING 10 OF THE LINGUET IN THE SAFETY POSITION, BUT INSUFFICIENT FOR IT TO COME OUTSIDE THE PATH OF THE BOSS 4A OF THIS LINGUET.

Description

l 25207112520711

Perfectionnements apportés aux crochets à verrouillage.  Improvements made to locking hooks.

La présente invention concerne les crochets comportant un linguet de sécurité qui est monté pivotant sur le corps du crochet de façon à pouvoir s'appliquer sur le bec de ce crochet et fermer l'ouverture de celui-ci, et dont la portion d'extrémité opposée au bec présente éventuellement un élément de raccordement, par exemple  The present invention relates to the hooks comprising a safety latch which is pivotally mounted on the body of the hook so as to be applied to the spout of the hook and close the opening thereof, and whose end portion opposite the spout optionally has a connecting element, for example

un oeil Le linguet vient ainsi automatiquement en position de sé-  an eye The latch thus automatically comes into

curité lorsque le crochet est soumis à une charge.  when the hook is subjected to a load.

Il existe des crochets de ce genre comportant un verrou qui est disposé à l'arrière du crochet et dont un bec peut s'engager  There are hooks of this kind having a lock which is arranged at the rear of the hook and which a beak can engage

dans une ouverture prévue dans la partie centrale du linguet, lors-  in an opening provided in the central portion of the latch, when

que celui-ci est en position de sécurité Le linguet ne peut ainsi libérer intempestivement l'ouverture du crochet Mais l'expérience  that it is in position of safety The pawl can thus free untimely opening of the hook But the experiment

montre qu'il peut arriver que le linguet, en pivotant depuis sa po-  shows that it can happen that the pawl, pivoting from its po-

sition de sécurité, vienne coincer le pouce posé sur le verrou.  security situation, wedge the thumb on the lock.

La présente invention a pour objet un perfectionnement  The present invention relates to an improvement

apporté à ces crochets dans le but d'éviter cet inconvénient.  brought to these hooks in order to avoid this inconvenience.

Le crochet selon l'invention est caractérisé en ce que le linguet comporte, à sa partie arrière, un bossage propre à venir en butée contre le verrou, ce qui limite le pivotement du linguet, et en ce que le corps du crochet est conformé de manière à permettre au verrou de pivoter d'un angle suffisant pour que son bec se dégage de l'ouverture du linguet en position de sécurité, mais insuffisant  The hook according to the invention is characterized in that the latch has, at its rear part, a clean boss to abut against the latch, which limits the pivoting of the pawl, and in that the body of the hook is shaped from in order to allow the latch to pivot by a sufficient angle so that its spout emerges from the pawl opening in the safety position, but insufficient

pour qu'il vienne en dehors du trajet du bossage de ce linguet.  for it to come out of the path of the boss of this latch.

Dans ces conditions, lorsque le linguet pivote, sa course est limitée par la rencontre de son bossage avec le verrou, ce qui  In these conditions, when the pawl pivots, its stroke is limited by the meeting of its boss with the lock, which

empêche le coincement du pouce de l'utilisateur.  prevents jamming of the user's thumb.

Dans un mode de réalisation particulier de l'invention, la  In a particular embodiment of the invention, the

partie centrale du linguet comporte une deuxième ouverture dans la-  central portion of the latch has a second opening in the-

quelle peut s'engager le bec du verrou lorsque le bossage du linguet  what can engage the latch beak when the boss of the latch

est en appui contre ce verrou.is in support against this lock.

On a décrit ci-après, à titre d'exemple non limitatif, un mode de réalisation d'un crochet de sécurité perfectionné selon la présente invention, avec référence au dessin annexé dans lequel:  An embodiment of an improved safety hook according to the present invention will now be described by way of nonlimiting example, with reference to the appended drawing in which:

La Figure 1 est une vue en élévation du crochet avec arra-  Figure 1 is an elevational view of the hook with

chement partiel, le linguet étant verrouillé en position de sécurité La Figure 2 montre une partie du crochet, le linguet étant  Partially locked, the latch being locked in the safety position Figure 2 shows a part of the latch, the latch being

en butée contre le verrou.in abutment against the lock.

Au dessin, on voit en 1 le corps d'un crochet qui délimite 2 -  In drawing, we see in 1 the body of a hook which delimits 2 -

l'ouverture 2 et est terminé par un bec 3.  the opening 2 and is terminated by a spout 3.

Le linguet de sécurité 4 est monté pivotant autour d'un axe entre deux oreilles la prévues à la partie supérieure du corps 1. L'extrémité supérieure de ce linguet est munie d'un oeil 6 et son extrémité inférieure peut s'appliquer sur le bec 3 en fermant l'ou-  The safety pawl 4 is pivotally mounted about an axis between two lugs la provided at the upper part of the body 1. The upper end of this pawl is provided with an eye 6 and its lower end can be applied on the beak 3 by closing the

verture 2 et empêchant ainsi le dégagement de l'élingue ou de l'an-  2 and thus preventing the sling or

neau dans lequel a été engagé le bec 3.  water in which the spout was engaged 3.

Le verrou 7 est monté pivotant en 8 à l'arrière du corps 3,  The latch 7 is pivotally mounted at 8 at the rear of the body 3,

entre les deux oreilles la Le pène ou bec 9 de ce verrou peut s'en-  between the two ears the latch or spout 9 of this lock can be-

gager dans une ouverture 10 de forme complémentaire prévue à la pé-  in an opening 10 of complementary shape provided for in

riphérie de la partie centrale 4 a, formant moyeu, du linguet 4 de  ratchet of the central portion 4a, forming a hub, of the latch 4 of

façon à immobiliser ce dernier dans sa position de sécurité; un cer-  to immobilize the latter in its safety position; a few

tain jeu est bien entendu prévu pour permettre au bec 9 du verrou  tain game is of course provided to allow the beak 9 of the lock

de se dégager de l'ouverture 10.to escape from the opening 10.

Un usinage 11 prévu dans le corps 1 permet au verrou 7 de  A machining 11 provided in the body 1 allows the lock 7 to

pivoter suffisameent pour que son bec 9 se dégage de l'ouverture 10.  rotate will suffice so that its beak 9 emerges from the opening 10.

Le moyeu 4 a du linguet 4 présente une deuxième ouverture 12 dans laquelle le bec 9 du verrou peut s'engager lorsque le linguet est en position d'ouverture (Fig 2) Cette ouverture a également une  The hub 4 has pawl 4 has a second opening 12 in which the spout 9 of the lock can engage when the pawl is in the open position (Fig 2) This opening also has a

forme complémentaire de celle du bec 9, c'est-à-dire qu'elle présen-  form complementary to that of the beak 9, that is to say that it presents

te deux faces 12 a et 12 b contre lesquelles viennent en appui les fa-  on both sides 12a and 12b against which the

ces 9 a et 9 b de ce bec 9.these 9 and 9 b of this beak 9.

Au delà de l'ouverture 12, le linguet présente un bossage 4 b qui vient en appui sur la face 9 c du bec 9, opposée à la face 9 a de celui-ci * L'usinage 11 présente une profondeur permettant au verrou 7  Beyond the opening 12, the pawl has a boss 4b which bears on the face 9c of the spout 9, opposite the face 9a thereof * The machining 11 has a depth allowing the latch 7

de pivoter suffisamment pour que le pouce 13 de l'utilisateur manoeu-  to rotate sufficiently so that the user's thumb 13

vrant le verrou ne soit pas écrasé par le linguet venant en position d'ouverture Mais cette profondeur est insuffisante pour permettre  the lock is not crushed by the pawl coming into the open position But this depth is insufficient to allow

à la face 9 c du bec 9 de venir hors du trajet du bossage 4 b.  on the face 9c of the spout 9 to come out of the path of the boss 4b.

Dans ces conditions, lorsque le linguet 4 prend sa position d'ouverture, le bossage 4 b rencontre de manière stre la face 9 c du du bec 9; la course du linguet est ainsi limitée, ce qui évite le  Under these conditions, when the pawl 4 takes its open position, the boss 4b meets stre face 9 c of the nozzle 9; the stroke of the latch is thus limited, which avoids the

coincement du pouce.wedging of the thumb.

Il suffit alors de faire pivoter le verrou 7 de façon à en-  It is then sufficient to rotate the latch 7 so as to

gager son bec dans l'ouverture 12, ce qui verrouille le linguet dans  its beak in the opening 12, which locks the latch in

sa position d'ouverture.its open position.

Il va de soi que la présente invention ne doit pas être considérée comme limitée au mode de réalisation décrit et représenté,  It goes without saying that the present invention should not be considered as limited to the embodiment described and shown,

mais en couvre, au contraire, toutes les variantes.  but covers, on the contrary, all variants.

3 25207113 2520711

Claims (3)

REVENDICATIONS 1 Crochet comportant un linguet de sécurité qui est mont, pivotant sur le corps du crochet de façon à pouvoir s'appliquer su: le bec de ce crochet et fermer l'ouverture de celui-ci, et un verr( qui est disposé à l'arrière du crochet et dont un bec peut s'engage: dans une ouverture prévue dans la partie centrale du linguet lorsqi  1 hook comprising a safety latch which is mounted, pivoting on the body of the hook so as to be able to apply to: the spout of this hook and close the opening thereof, and a lock (which is arranged at the rear of the hook and which a beak can engage: in an opening provided in the central portion of the latch when celui-ci est en position de sécurité, caractérisé en ce que le lin-  it is in a safety position, characterized in that the lin- guet 4 comporte, à sa partie arrière, un bossage 4 b propre à venir en butée contre le verrou 7, ce qui limite le pivotement du lingue et en ce que le corps 1 du crochet est conformé de manière à perme tre au verrou de pivoter d'un angle suffisant pour que son bec 9 se dégage de l'ouverture 10 du linguet en position de sécurité, mais insuffisant pour qu'il vienne en dehors du trajet du bossage 4 a de  watch 4 comprises, at its rear part, a boss 4 b clean to abut against the latch 7, which limits the pivoting of the ling and in that the body 1 of the hook is shaped so as to allow the lock to rotate at a sufficient angle so that its spout 9 emerges from the opening 10 of the pawl in the safety position, but insufficient for it to come out of the path of the boss 4 a of ce linguet.this latch. 2 Crochet selon la revendication 1, caractérisé en ce que la partie centrale du linguet comporte une deu A Pme ouverture  2 hook according to claim 1, characterized in that the central portion of the pawl comprises a deu A Pme opening 12 dans laquelle peut s'engager le bec 9 du verrou lorsque le boss.  12 in which can engage the spout 9 of the lock when the boss. ge 4 a du linguet est en appui contre ce verrou.  4a has pawl bears against this latch.
FR8201943A 1982-02-02 1982-02-02 IMPROVEMENTS ON LOCKING HOOKS Expired FR2520711B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8201943A FR2520711B1 (en) 1982-02-02 1982-02-02 IMPROVEMENTS ON LOCKING HOOKS
EP83400216A EP0085631A1 (en) 1982-02-02 1983-02-01 Safety hooks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8201943A FR2520711B1 (en) 1982-02-02 1982-02-02 IMPROVEMENTS ON LOCKING HOOKS

Publications (2)

Publication Number Publication Date
FR2520711A1 true FR2520711A1 (en) 1983-08-05
FR2520711B1 FR2520711B1 (en) 1986-07-25

Family

ID=9270735

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8201943A Expired FR2520711B1 (en) 1982-02-02 1982-02-02 IMPROVEMENTS ON LOCKING HOOKS

Country Status (2)

Country Link
EP (1) EP0085631A1 (en)
FR (1) FR2520711B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9003268D0 (en) * 1990-10-12 1990-10-12 Gunnebo Lifting Ab LIFTING HOOK
US20020152593A1 (en) * 2001-04-20 2002-10-24 Steven Hong Coupling self-locking hook
GB0801282D0 (en) * 2008-01-24 2008-02-27 Toon John Hook
DE102019103517B4 (en) 2019-02-12 2021-04-22 Pewag Austria Gmbh Safety hook

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1915524A (en) * 1931-04-29 1933-06-27 Fraser Joseph Cargo hook
AU437514B2 (en) * 1968-07-15 1973-07-03 Kannas Broks Aktiebolag Safety hook
DE2425867A1 (en) * 1973-06-01 1974-12-19 Bulten Kanthal Ab SAFETY HOOK
FR2327186A1 (en) * 1974-01-18 1977-05-06 Forges Du Creux Du Sable Lifting hook locking device - has hook with yoke in which closing finger with lifting eye pivots
FR2425400A1 (en) * 1978-05-09 1979-12-07 Beon Roger Le Safety catch for crane hook - has sprung pawl engaging notch in fork end to hold hook in closed or open position as required
FR2491901A3 (en) * 1980-10-10 1982-04-16 Charlet Sa Safety lifting hook for use with block and tackle - has pivoted closing link pivoted to part of main hooking body to lock it shut

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1063684A (en) * 1952-09-26 1954-05-05 Carabiner applicable in particular to lifting devices
US3722943A (en) * 1971-05-12 1973-03-27 J Kalua Safety hook

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1915524A (en) * 1931-04-29 1933-06-27 Fraser Joseph Cargo hook
AU437514B2 (en) * 1968-07-15 1973-07-03 Kannas Broks Aktiebolag Safety hook
DE2425867A1 (en) * 1973-06-01 1974-12-19 Bulten Kanthal Ab SAFETY HOOK
FR2327186A1 (en) * 1974-01-18 1977-05-06 Forges Du Creux Du Sable Lifting hook locking device - has hook with yoke in which closing finger with lifting eye pivots
FR2425400A1 (en) * 1978-05-09 1979-12-07 Beon Roger Le Safety catch for crane hook - has sprung pawl engaging notch in fork end to hold hook in closed or open position as required
FR2491901A3 (en) * 1980-10-10 1982-04-16 Charlet Sa Safety lifting hook for use with block and tackle - has pivoted closing link pivoted to part of main hooking body to lock it shut

Also Published As

Publication number Publication date
EP0085631A1 (en) 1983-08-10
FR2520711B1 (en) 1986-07-25

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