EP0000675B1 - Cable hoist pulley - Google Patents

Cable hoist pulley Download PDF

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Publication number
EP0000675B1
EP0000675B1 EP78400056A EP78400056A EP0000675B1 EP 0000675 B1 EP0000675 B1 EP 0000675B1 EP 78400056 A EP78400056 A EP 78400056A EP 78400056 A EP78400056 A EP 78400056A EP 0000675 B1 EP0000675 B1 EP 0000675B1
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EP
European Patent Office
Prior art keywords
sheave
rope
notch
frame
fixed sheave
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
Application number
EP78400056A
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German (de)
French (fr)
Other versions
EP0000675A1 (en
Inventor
Edouard Singer
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.)
Individual
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Individual
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 Individual filed Critical Individual
Publication of EP0000675A1 publication Critical patent/EP0000675A1/en
Application granted granted Critical
Publication of EP0000675B1 publication Critical patent/EP0000675B1/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
    • B66D3/06—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage with more than one pulley
    • B66D3/10—Applications of braking or detent devices
    • 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
    • Y10T24/3911—Friction disk

Definitions

  • the invention relates to a lifting device, in particular a muffle.
  • lifting devices comprising in particular a pulley making it possible to haul a load.
  • a lifting device has already been known for a very long time, in particular a muffle consisting of a yoke provided at its upper part with a hooking member, an axis and a sheave, movable on this axis and placed between the two wings of the yoke.
  • a lifting device comprising a yoke provided at its upper part with a hooking member, an axis and a sheave movable on this axis and placed between the wings of the yoke.
  • This yoke consists of two discs which, during operation, are made integral. One of the discs in this yoke has a notch for the passage of the rope.
  • the mittens, fulfilling the conditions for the two functions mentioned above, are equipped with braking baffles around which the rope is partially wound.
  • These braking baffles are located in the vertical extension of the return pulley and on the same vertical plane as the axis of symmetry of the pulley sheave. Therefore, a first disadvantage is obtained consisting in the significant elongation of the body of the muffle. However, it is very desirable that the muffle has the smallest possible height.
  • these devices include a pivoting cover for access to the baffles. This cover must be immobilized in the open position. On the other hand, it must in no case open or close without the manual intervention of the operator.
  • the rope must be threaded by hand into the baffles, which presents certain difficulties in cold, humid weather and, in the event of panic, in the event of an accident.
  • the untimely opening of the baffle protection cover can cause the rope to be ejected from the baffle housing. As a result, there is a risk of a serious accident.
  • the present invention aims to provide a solution to this difficulty.
  • the invention as characterized in the claims provides a lifting device fulfilling the conditions of a double function. Indeed, this device is used, on the one hand, in the use of a pulley with a return pulley, to mount the material fixed at one end of the lifting rope towards the anchor point of the muffle, while operating the efforts of traction from the ground and, on the other hand, hooking a load to a strand of the rope, for example an injured or inanimate agent and lowering it flexibly while exerting only a very small braking force on the other strand.
  • the invention of the device essentially lies in the design of the rope braking system.
  • the advantages obtained thanks to this invention consist essentially in that the system makes it possible to instantly transform the return pulley into a descender and thus to a single man, at the top of a support, to ensure the instant rescue of an accident victim. .
  • This braking control can take place at any level between the ground and the muffle mooring point. It is the same with regard to the blocking of the rope which becomes a self-blocking achieved by the jamming of the rope.
  • the invention relates to a lifting device, in particular, a muffle consisting of a yoke provided at its upper part with a fastening member and formed of two parallel wings, one of which has a notch, a axis and a sheave, movable on this axis and placed between the two wings of the yoke characterized in that it comprises at least one fixed sheave threaded on one end of the axis projecting with respect to the wing of the clevis in which the notch is produced and on which one of the strands of the cord wound around the mobile sheave is capable of being wound after passing through the notch produced in the wing of the clevis interposed between mobile sheave and the fixed sheave (s).
  • Figure 1 is an elevational view of the lifting device according to the invention
  • Figure 2 is a side view of this device
  • Figure 3 is an elevational view of the device in use phase descender
  • Figure 4 is an elevational view of the blocked rope device
  • Figure 5 is a side view of the device showing the cooperation of the mobile sheave and fixed sheave.
  • the device 1 includes a yoke 2 consisting of two vertical wings 3 and 4 interconnected by a transverse wall 5.
  • This transverse wall 5 is provided on its outer face 6 with a hooking member 7 such as a hook.
  • the two vertical wings 3 and 4 are crossed right through by an axis of rotation 8.
  • On this axis of rotation 8 can freely pivot a mobile sheave 9 placed between the internal faces 10, 11 of the two vertical wings 3, 4.
  • This mobile sheave 9 has a groove 12 around which a handling rope 13 is partially wound.
  • the axis of rotation 8 projects relative to one of the wings 4 and at least one second sheave 14 fixed in rotation is threaded onto this projecting end.
  • a notch 15 is made in the wing 4 allowing the handling rope 13 to pass.
  • the fixed sheave 14 has an internal flank in the form of a truncated cone 16 whose large base 17 is directed towards the external periphery 18 and the small base 19 is secured to a hub 20.
  • This fixed sheave 14 is capped by a cover made of elastomer 21 of circular shape and having a flange 22 directed towards the vertical wing 4 of the yoke 2. This flange 22 maintains the cord 13 on the fixed sheave 14.
  • the handling rope 13 is partially wound around the mobile sheave 9.
  • one of the strands 23 of the rope 13 is passed through the notch 15 and the rope 13 is wound on the fixed sheave 14. If one wishes to block the rope 13, it is sufficient to wind it several times around the fixed sheave 14. Because of the taper of the internal flank 16, the different bands 24 , 25 of the rope 13 tend to approach the hub 20 but, due to the volume of the rope 13, a self-locking is obtained by wedging the rope 13 on the fixed sheave 14. The rope is held on the fixed sheave 14 by the rim 22 of the elastomer cover 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Pulleys (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Braking Arrangements (AREA)

Description

L'invention concerne un dispositif de levage, en particulier une moufle.The invention relates to a lifting device, in particular a muffle.

Pour de nombreux travaux et, en particulier pour les travaux effectués à une certaine hauteur tels que les travaux réalisés sur les lignes électriques aériennes, on utilise des dispositifs de levage comportant en particulier une poulie permettant de haler une charge.For many works and, in particular for work carried out at a certain height such as work carried out on overhead electrical lines, lifting devices are used comprising in particular a pulley making it possible to haul a load.

Les dispositifs généralement employés ne répondent qu'à une seule fonction, soit la poulie sert de poulie de renvoi, soit la pouli forme un descenseur. r.The devices generally employed only respond to a single function, either the pulley serves as a deflection pulley, or the pulley forms a descender. r.

On connaît déjà, depuis fort longtemps, un dispositif de levage, en particulier une moufle constituée d'une chape pourvue à sa partie supérieure d'un organe d'accrochage, d'un axe et d'un réa, mobile sur cet axe et placé entre les deux ailes de la chape.A lifting device has already been known for a very long time, in particular a muffle consisting of a yoke provided at its upper part with a hooking member, an axis and a sheave, movable on this axis and placed between the two wings of the yoke.

On connaît également par le brevet américain n° 2,523,440 un dispositif de levage comportant une chape pourvue à sa partie supérieure d'un organe d'accrochage, un axe et une réa mobile sur cet axe et placé entre les ailes de la chape. Cette chape est constituée de deux disques quie, au cours du fonctionnement, sont rendus solidaires. Un des disques de cette chape comporte une échancrure pour le passage de la corde.Also known from US Patent No. 2,523,440 is a lifting device comprising a yoke provided at its upper part with a hooking member, an axis and a sheave movable on this axis and placed between the wings of the yoke. This yoke consists of two discs which, during operation, are made integral. One of the discs in this yoke has a notch for the passage of the rope.

Les moufles, remplissant les conditions pour les deux fonctions évoquées précédemnent sont équipées de chicanes de freinage autour desquelles s'enroule partiellement la corde. Ces chicanes de freinage sont situées dans le prolongement vertical de la poulie de renvoi et sur le même plan vertical que l'axe de symétrie du réa de poulie. De ce fait, on obtient un premier désavantage consistant dans l'allongement important du corps de la moufle. Or, il est très souhaitable que la moufle ait une hauteur la plus petite possible. Par ailleurs, ces dispositifs comportent un couvercle pivotant d'accès aux chicanes. Ce couvercle doit être immobilisé en position ouverte. Par contre, il ne doit en aucun cas s'ouvrir ou se fermer sans l'intervention manuelle de l'opérateur. De plus, la corde doit être enfilée à la main dans les chicanes, ce qui présente des difficultés certaines par temps froid, humide et, sous le coup de l'affolement, en cas d'accident.The mittens, fulfilling the conditions for the two functions mentioned above, are equipped with braking baffles around which the rope is partially wound. These braking baffles are located in the vertical extension of the return pulley and on the same vertical plane as the axis of symmetry of the pulley sheave. Therefore, a first disadvantage is obtained consisting in the significant elongation of the body of the muffle. However, it is very desirable that the muffle has the smallest possible height. Furthermore, these devices include a pivoting cover for access to the baffles. This cover must be immobilized in the open position. On the other hand, it must in no case open or close without the manual intervention of the operator. In addition, the rope must be threaded by hand into the baffles, which presents certain difficulties in cold, humid weather and, in the event of panic, in the event of an accident.

Pour ces moufles-descenseurs, indiquées ci- dessus, quelques problèmes techniques, d'importance non négligeable, sont restés sans solution. L'un de ces problèmes réside dans le fait que la corde ne peut pas être bloquée. Or, il est indéniable que le blocage est primordial dans certains cas de sauvetage.For these mittens-descenders, indicated above, some technical problems, of significant importance, remained without solution. One of these problems is that the rope cannot be blocked. However, it is undeniable that blocking is essential in certain cases of rescue.

Par ailleurs, l'ouverture intempestive du couvercle de protection des chicanes, en cours de manoeuvre, peut provoquer l'éjection de la corde du logement à chicane. De ce fait, on risque un accident grave.Furthermore, the untimely opening of the baffle protection cover, during operation, can cause the rope to be ejected from the baffle housing. As a result, there is a risk of a serious accident.

Ces différents inconvénients rendent douteux le fonctionnement correct de tels dispositifs et, en conséquence, leur utilisation est dangereuse.These various drawbacks make the correct functioning of such devices doubtful and, consequently, their use is dangerous.

La présente invention a pour but d'apporter une solution à cette difficulté. L'invention telle qu'elle est caractérisée dans les revendications, propose un dispositif de levage remplissant les conditions d'une double fonction. En effet, ce dispositif sert, d'une part, en utilisation de moufle à poulie de renvoi, à monter le matériel fixé à une extrémité de la corde de levage vers le point d'ancrage de la moufle, tout en opérant les efforts de traction depuis le sol et, d'autre part, à accrocher à un brin de la corde une charge, par exemple un agent blessé ou inanimé et à le descendre en souplesse en n'exerçant qu'un très faible effort de freinage sur l'autre brin.The present invention aims to provide a solution to this difficulty. The invention as characterized in the claims, provides a lifting device fulfilling the conditions of a double function. Indeed, this device is used, on the one hand, in the use of a pulley with a return pulley, to mount the material fixed at one end of the lifting rope towards the anchor point of the muffle, while operating the efforts of traction from the ground and, on the other hand, hooking a load to a strand of the rope, for example an injured or inanimate agent and lowering it flexibly while exerting only a very small braking force on the other strand.

L'invention du dispositif réside essentiellement dans la conception du système de freinage de la corde.The invention of the device essentially lies in the design of the rope braking system.

Les avantages, obtenus grâce à cette invention, consistent essentiellement en ce que le système permet de transformer instantanément la poulie de renvoi en descenseur et ainsi à un seul homme, en haut d'un support, d'assurer le sauvetage instantané d'un accidenté. Ce contrôle de freinage peut intervenir à n'importe quel niveau entre le sol et le point d'ammarrage de la moufle. Il en est de même en ce qui concerne le blocage de la corde qui devient un auto-blocage réalisé par le coincement de la corde.The advantages obtained thanks to this invention consist essentially in that the system makes it possible to instantly transform the return pulley into a descender and thus to a single man, at the top of a support, to ensure the instant rescue of an accident victim. . This braking control can take place at any level between the ground and the muffle mooring point. It is the same with regard to the blocking of the rope which becomes a self-blocking achieved by the jamming of the rope.

A cet effet, l'invention concerne un dispositif de levage, en particulier, une moufle constituée d'une chape pourvue à sa partie supérieure d'un organe d'accrochage et formée de deux ailes parallèles dont une présente une échancrure, d'un axe et d'un réa, mobile sur cet axe et placé entre les deux ailes de la chape caractérisé en ce qu'il comporte au moins un réa fixe enfilé sur une extrémité de l'axe faisant saillie par rapport à l'aile de la chape dans laquelle l'échancrure est réalisée et sur lequel l'un des brins de la corde enroulée autour du réa mobile est susceptible d'être enroulé après passage à travers l'échancrure réalisée dans l'aile de la chape interposée entre réa mobile et le (ou les) réa(s) fixe(s).To this end, the invention relates to a lifting device, in particular, a muffle consisting of a yoke provided at its upper part with a fastening member and formed of two parallel wings, one of which has a notch, a axis and a sheave, movable on this axis and placed between the two wings of the yoke characterized in that it comprises at least one fixed sheave threaded on one end of the axis projecting with respect to the wing of the clevis in which the notch is produced and on which one of the strands of the cord wound around the mobile sheave is capable of being wound after passing through the notch produced in the wing of the clevis interposed between mobile sheave and the fixed sheave (s).

L'invention est exposée ci-après plus en détail à l'aide de dessins représentant seulement un mode d'exécution.The invention is set out below in more detail with the aid of drawings representing only one embodiment.

La figure 1 est une vue en élévation du dispositif de levage conforme à l'invention; la figure 2 est une vue latérale de ce dispositif; la figure 3 est une vue en élévation du dispositif en phase d'utilisation en descenseur; la figure 4 est une vue en élévation du dispositif à corde bloquée; la figure 5 est une vue latérale du dispositif montrant la coopération du réa mobile et due réa fixe.Figure 1 is an elevational view of the lifting device according to the invention; Figure 2 is a side view of this device; Figure 3 is an elevational view of the device in use phase descender; Figure 4 is an elevational view of the blocked rope device; Figure 5 is a side view of the device showing the cooperation of the mobile sheave and fixed sheave.

Le dispositif 1 comporte une chape 2 constituée de deux ailes verticales 3 et 4 reliées entre elles par une paroi transversale 5. Cette paroi transversale 5 est pourvue sur sa face externe 6 d'un organe d'accrochage 7 tel qu'un crochet. Les deux ailes verticales 3 et 4 sont traversées de part en part par un axe de rotation 8. Sur cet axe de rotation 8 peut pivoter librement un réa mobile 9 placé entre les faces internes 10, 11 des deux ailes verticales 3, 4. Ce réa mobile 9 comporte une gorge 12 autour de laquelle s'enroule partiellement une corde de manutention 13.The device 1 includes a yoke 2 consisting of two vertical wings 3 and 4 interconnected by a transverse wall 5. This transverse wall 5 is provided on its outer face 6 with a hooking member 7 such as a hook. The two vertical wings 3 and 4 are crossed right through by an axis of rotation 8. On this axis of rotation 8 can freely pivot a mobile sheave 9 placed between the internal faces 10, 11 of the two vertical wings 3, 4. This mobile sheave 9 has a groove 12 around which a handling rope 13 is partially wound.

L'axe de rotation 8 fait saillie par rapport à l'une des ailes 4 et on enfile sur cette extrémité saillante au moins un second réa 14 fixe en rotation. On réalisé dans l'aile 4 une échancrure 15 permettant le passage de la corde de manutention 13.The axis of rotation 8 projects relative to one of the wings 4 and at least one second sheave 14 fixed in rotation is threaded onto this projecting end. A notch 15 is made in the wing 4 allowing the handling rope 13 to pass.

Le réa fixe 14 comporte un flanc interne en forme de tronc de cône 16 dont la grande base 17 est dirigée vers le pourtour externe 18 et la petite base 19 est solidaire d'un moyeu 20. Ce réa fixe 14 est coiffé par un capot en élastomère 21 de forme circulaire et présentant un rebord 22 dirigé vers l'aile vertical 4 de la chape 2. Ce rebord 22 assure le maintien de la corde 13 sur le réa fixe 14.The fixed sheave 14 has an internal flank in the form of a truncated cone 16 whose large base 17 is directed towards the external periphery 18 and the small base 19 is secured to a hub 20. This fixed sheave 14 is capped by a cover made of elastomer 21 of circular shape and having a flange 22 directed towards the vertical wing 4 of the yoke 2. This flange 22 maintains the cord 13 on the fixed sheave 14.

Dans le cas d'une utilisation normale, la corde de manutention 13 s'enroule partiellement autour du réa mobile 9. Dans le case d'une utilisation en descenseur, on passe un des brins 23 de la corde 13 à travers l'échancrure 15 et on enroule la corde 13 sur le réa fixe 14. Si l'on veut bloquer la corde 13, il suffit de l'enrouler plusieurs fois autour de réa fixe 14. En raison de la conicité du flanc interne 16, les différentes bandes 24,25 de la corde 13 ont tendance à se rapprocher du moyeu 20 mais, en raison du volume de la corde 13, on obtient un autoblocage par coincement de la corde 13 sur le réa fixe 14. La corde est maintenue sur le réa fixe 14 par le rebord 22 du capot en élastomère 21.In the case of normal use, the handling rope 13 is partially wound around the mobile sheave 9. In the case of use in descenders, one of the strands 23 of the rope 13 is passed through the notch 15 and the rope 13 is wound on the fixed sheave 14. If one wishes to block the rope 13, it is sufficient to wind it several times around the fixed sheave 14. Because of the taper of the internal flank 16, the different bands 24 , 25 of the rope 13 tend to approach the hub 20 but, due to the volume of the rope 13, a self-locking is obtained by wedging the rope 13 on the fixed sheave 14. The rope is held on the fixed sheave 14 by the rim 22 of the elastomer cover 21.

Claims (4)

1. A lifting device consisting in particular of a pulley block made up of a frame (2) equipped in its upper part of a hooking piece (7) and formed of two parallel flanges, one of which (4) showing a notch (15), of a shaft (8) and a mobile sheave (9) turning upon the said shaft (8) and placed between the two flanges (3, 4) of the frame (2) characterized by including at least a fixed sheave (14) mounted on one end of the shaft (8) projecting over the flange (4) of the frame (2) in which one the notch (15) is cut out and on which one of the strands (23) of the rope (13) that is wound around the mobile sheave (9) is likely to be wound after having passed through the notch (15) cut out in the flange (4) of the frame (2) interposed between the mobile sheave (9) and (or) the fixed sheave(s) (14).
2. Device as in claim 1, wherein said fixed sheave (14) includes a hub (20) and an inside flank in the form of a frustum (16), the large side of which (17) facing toward the external periphery (18) and the small side (19) being integral with the hub (20).
3. Device as in claim 1, characterized by having an elastomer hood (21) mounted on the shaft (8) and applied against the fixed sheave (14).
4. Device as in claim 3, wherein said hood (21) circular in form, includes a rim (22) facing toward the flange (4) of the frame (2) interposed between the mobile sheave (9) and the fixed one (14), on which the notch (15) has been cut out, the said rim (22) keeping the rope (13) in place on the fixed sheave (14).
EP78400056A 1977-07-27 1978-07-10 Cable hoist pulley Expired EP0000675B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7723696A FR2398690A1 (en) 1977-07-27 1977-07-27 LIFTING DEVICE IN PARTICULAR MITTEN
FR7723696 1977-07-27

Publications (2)

Publication Number Publication Date
EP0000675A1 EP0000675A1 (en) 1979-02-07
EP0000675B1 true EP0000675B1 (en) 1980-12-10

Family

ID=9194111

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78400056A Expired EP0000675B1 (en) 1977-07-27 1978-07-10 Cable hoist pulley

Country Status (9)

Country Link
US (2) US4264056A (en)
EP (1) EP0000675B1 (en)
JP (1) JPS5427160A (en)
AR (1) AR217700A1 (en)
CA (1) CA1102783A (en)
DE (1) DE2860291D1 (en)
ES (1) ES244803Y (en)
FR (1) FR2398690A1 (en)
IT (1) IT1097384B (en)

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FR2494247A2 (en) * 1980-11-19 1982-05-21 Singer Edouard LIFTING DEVICE IN PARTICULAR MITTEN
JPS63319180A (en) * 1987-06-23 1988-12-27 Nec Corp Mail matter arranging device
US5785424A (en) * 1993-04-30 1998-07-28 Kansai Chemical Engineering Co. Ltd. Agitator blade having agitators with open first and second ends and inner fabrics therein
DE69810067T2 (en) 1997-11-14 2003-10-02 Kansai Chemical Engineering Co., Ltd. Device and method for liquid ejection
CA2298879C (en) 1999-02-22 2004-09-14 Hideo Noda Liquid ejection apparatus and liquid ejection method
JP2001072358A (en) * 1999-07-02 2001-03-21 Teijin Seiki Co Ltd Elevator hoisting machine
DE60026368T2 (en) * 1999-12-11 2006-11-30 Donald B. Whale Beach Curchod CONNECTION SYSTEM WITH ROPE BELT FOR SAILBOATS
US6698723B1 (en) * 2002-12-12 2004-03-02 Deno Antonini Ratchet tie down device with integral security lock
US7419138B1 (en) * 2007-02-23 2008-09-02 Cmc Rescue, Inc. Self-camming pulley
US9279476B2 (en) * 2009-04-14 2016-03-08 John Bell Rope braking system
US20130022439A1 (en) * 2011-07-19 2013-01-24 Grid Training Corporation dba Northwest Lineman College Hoisting and lowering device
US10787347B1 (en) * 2019-03-04 2020-09-29 Randy Gurule Self-locking pulley
CN114044455A (en) * 2021-11-18 2022-02-15 国网辽宁省电力有限公司检修分公司 Transfer rope tractor

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FR380441A (en) * 1907-08-01 1907-12-07 James Leslie Coleman Pulley
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US1675146A (en) * 1926-12-23 1928-06-26 Carl G Thurnau Pulley
US1671435A (en) * 1927-04-01 1928-05-29 William H Mckissick Safety sheave block
FR677148A (en) * 1929-06-20 1930-03-04 Hoist for goods, bicycles, etc.
US2103630A (en) * 1934-08-01 1937-12-28 Morin Paul Gerard Cleat
US2343086A (en) * 1941-12-24 1944-02-29 Simplex Safety Block Co Inc Safety suspension device
US2523440A (en) * 1947-12-01 1950-09-26 Mcenary Michael Pulley with threading means
US2677863A (en) * 1950-07-14 1954-05-11 John Everett St Cleat and fastening device
US2793740A (en) * 1954-02-23 1957-05-28 Charles H Daudt Winch
US4266498A (en) * 1978-06-09 1981-05-12 Clark James R Rope securing device

Also Published As

Publication number Publication date
IT7826029A0 (en) 1978-07-24
EP0000675A1 (en) 1979-02-07
ES244803Y (en) 1980-08-16
IT1097384B (en) 1985-08-31
DE2860291D1 (en) 1981-02-19
CA1102783A (en) 1981-06-09
FR2398690B1 (en) 1980-07-11
FR2398690A1 (en) 1979-02-23
ES244803U (en) 1980-03-01
JPS5427160A (en) 1979-03-01
US4332372A (en) 1982-06-01
AR217700A1 (en) 1980-04-15
US4264056A (en) 1981-04-28

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