US3265269A - Traction device for a unit for pulling an elongated element - Google Patents

Traction device for a unit for pulling an elongated element Download PDF

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US3265269A
US3265269A US414790A US41479064A US3265269A US 3265269 A US3265269 A US 3265269A US 414790 A US414790 A US 414790A US 41479064 A US41479064 A US 41479064A US 3265269 A US3265269 A US 3265269A
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pulling
cable
sleeves
pulleys
supple
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US414790A
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Godderidge Jean
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/14—Aprons, endless belts, lattices, or like driven elements
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/02—Machine details; Auxiliary devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F16G1/28—Driving-belts with a contact surface of special shape, e.g. toothed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/02—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts
    • F16H7/023—Gearings for conveying rotary motion by endless flexible members with belts; with V-belts with belts having a toothed contact surface or regularly spaced bosses or hollows for slipless or nearly slipless meshing with complementary profiled contact surface of a pulley
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/0003—Apparatus or processes specially adapted for manufacturing conductors or cables for feeding conductors or cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2812/00—Indexing codes relating to the kind or type of conveyors
    • B65G2812/01—Conveyors composed of several types of conveyors
    • B65G2812/016—Conveyors composed of several types of conveyors for conveying material by co-operating units in tandem
    • B65G2812/018—Conveyors composed of several types of conveyors for conveying material by co-operating units in tandem between conveyor sections

Definitions

  • the present invention relates to a traction device for use in an apparatus for pulling an elongated element, which device is in the form of an endless loop wrapped around the element in the manner of a screw having multiple threads.
  • FIG. 1 is a side view of a pulling apparatus of the type I described above;
  • drawing apparatus which is both small and inexpensive and in which an endless, supple pulling device is stretched between two pulleys to form a loop which is at least doubled; this device is wrapped around the element to be pulled in the manner of a multiple-threaded screw.
  • a supple member such as a cord, a steel cable, a link chain, or other similar means, which is generally covered with a sheath of rubber, for example, which serves to increase the coefiicient of friction of the device and to avoid damaging the elements to be pulled.
  • the present invention proposes to overcome these drawbacks by providing a particular form of pulling device which permits the effective pulling of an elongated ele' ment which may or may not be caused to twist about its ax1s.
  • the device forming the object of the present invention is intended to be used in an apparatus of the type described above and is characterised in that it comprises, in combination: a supple central cable whose ends are joined to form a continuous loop; a plurality of sleeves disposed along and rigidly connected to said cable at regular intervals; and a plurality of supple, annular gripping elements having high friction surfaces and freely disposed on said cable alternately with said sleeves, said gripping elements having larger outer diameters than said sleeves.
  • the gripping elements are shaped to correspond with the shape of notches arranged in the pulleys disposed in the apparatus, these pulleys being driven in rotation, and in turn driving the pulling device along the path defined by the axis of its central cable.
  • FIG. 2 is a longitudinal cross-sectional view of a portion of :a gripping device according to the present invention
  • FIG. 3 is a plan view of a portion of the device indicated FIG. 2 together with its driving pulley.
  • the pulling machine shown in FIG. 1 comprises a frame 1 which is rotatable about the axis of the elongated element 2 which is to be pulled in the direction of arrow f.
  • Frame 1 carries, at one of its ends, two return pulleys 3a and 3b and two guide pulleys 4a .and 4b.
  • the frame carries a second pair of guide pulleys 5a and 5b and two driving pulleys 6a and 6b.
  • These driving pulleys are each rigidly connected to a respective one of the pinions 7a and 7b engaging a conical pinion 8.
  • a pulling device 9 which is constituted, in the prior art, by an endless cable wrapped around the element to be pulled in the manner of a multiply-threaded screw. Each element of the cable passes the pulleys in the following order: 6a, 5a, 4a, 3a, 6b, 5b, 4b, 3b and 6a.
  • the device 9 wraps on to the element 2 at the end of the frame removed from pinion 8 and unwraps therefrom at the other end of the frame.
  • the portions of cable 9 which are wrapped around the element 2 are driven in the direction of the cable axis by pinions 7a and 7b, thus pulling element 2 in the direction of arrow 1.
  • the apparatus can pull an elongated element while causing it either to turn or not about its own axis.
  • the prior art device 9 has usually been constituted by a metallic cable whose ends are joined together and which is covered by a sheath of a material such as rubber.
  • FIGS. 2 and 3 show .a pulling device and pulley according to the present invention correspond, in function, to device 9 and, for example, pulley 6a of FIG. 1.
  • the pulling device of this invention is composed of a central core 20 constituted, for example, by a metallic cable.
  • Annular elements 23a to 23n are slid onto cable 20 so as to alternate with sleeves 21a to 2121. These elements are free to rotate with respect to core 20 and the sleeves 21, but are prevented from moving longitudinally of core 20 by the abutment of said sleeves.
  • Elements 23a to 2311 are made of a relatively supple material, such as rubber, having a suitable coeflicient of friction.
  • Device '19 is moved along the path described by its longitudinal axis by at least one notched pulley 24, with elements 23 coming to lodge in the notches of the pulley when this pulley is driven in rotation.
  • One pulley 24 is intended to replace at least one of the pulleys 6a and 6b of FIG. 1 and to be rigidly connected to one of the gears 7a and 7b which engages pinion 8.
  • Pulling device 19 is substituted for the device 9 of FIG. 1, is wrapped around the element 2 and bears thereagainst through the intermediary of elements 23.
  • the apparatus thus modified functions in exactly the same manner as that described in connection with FIG. 1.
  • a device for use in a traction apparatus for pulling an elongated element comprising a frame rotating about the aXis of the element to be pulled and carrying a plurality of pulleys for guiding and driving said device in a path defined by its longitudinal axis, said device being intended to have the form of a doubled loop which is wrapped around said element in the manner of the multiple threads of a screw so that the portions of said device which contact said element move in the direction of the longitudinal axis of said element, and urge said element in this direction, characterized in that said device comprises in combination: a supple central cable whose ends are joined together to form a continuous loop; a plurality of sleeves disposed along, and rigidly connected to said cable at regular intervals; and a plurality of supple, annular gripping elements having high friction surfaces and freely disposed on said cable alternately with said sleeves, said gripping elements having larger outer diameters than said sleeves.
  • a device characterized by the fact that said gripping elements are shaped to correspond with the shape of notches arranged in at least one driving pulley of said apparatus.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
  • Unwinding Of Filamentary Materials (AREA)

Description

Aug. 9, 1966 J GODDERIDGE 3,265,269 TRACTION DEVICE FOR A UNIT FOR PULLING AN ELONGATED ELEMENT Filed Nov. 30, 1964 United States Patent 3,265,269 TRACTION DEVICE FOR A UNIT FOR PULLING AN ELONGATED ELEMENT Jean Godderidge, 11 Blvd. Henri Barbusse, Houilles, Seine et Oise, France Filed Nov. 30, 1964, Ser. No. 414,790 Claims priority, application France, Nov. 29, 1963, 955,440 2 Claims. (Cl. 226-172) The present invention relates to a traction device for use in an apparatus for pulling an elongated element, which device is in the form of an endless loop wrapped around the element in the manner of a screw having multiple threads.
It is well known that there are difiiculties involved in the pulling of elongated elements, such as cables, when these elements are too stiff to be wrapped on a capstan.
Various remedies for these difficulties have already been proposed. One may cite, for example, the suggested use apparatus of the continuous tread type, which apparatus These and other objects, features and advantages of the present invention, will become better understood from the following detailed description when taken together with the attached drawings, in which:
FIG. 1 is a side view of a pulling apparatus of the type I described above;
is expensive and bulky, to mention only two of its drawbacks.
It has also been proposed to construct drawing apparatus which is both small and inexpensive and in which an endless, supple pulling device is stretched between two pulleys to form a loop which is at least doubled; this device is wrapped around the element to be pulled in the manner of a multiple-threaded screw. By causing the axes of the pulleys to rotate around the axis of the element to be pulled and by causing the traction device to move along its own axis, one causes the pulling device to unwrap from one extremity, and to wrap around the other extremity of the portion of the element around which it is wrapped. This portion of the element moves with the pulling device and hence is pulled along the line of its axis.
By combining the velocity of rotation of the pulley axes around the axis of the element with the velocity of movement of the pulling device, one obtains the motion of the element to be pulled along its own axis with this element either turning or not around its own axis.
In such a traction apparatus, it has already been suggested to use, as the pulling device, a supple member, such as a cord, a steel cable, a link chain, or other similar means, which is generally covered with a sheath of rubber, for example, which serves to increase the coefiicient of friction of the device and to avoid damaging the elements to be pulled.
Such an element presents several drawbacks the most noteworthy of which is an inadequate gripping which produces a slippage between the pulling device and the element being pulled.
The present invention proposes to overcome these drawbacks by providing a particular form of pulling device which permits the effective pulling of an elongated ele' ment which may or may not be caused to twist about its ax1s.
The device forming the object of the present invention is intended to be used in an apparatus of the type described above and is characterised in that it comprises, in combination: a supple central cable whose ends are joined to form a continuous loop; a plurality of sleeves disposed along and rigidly connected to said cable at regular intervals; and a plurality of supple, annular gripping elements having high friction surfaces and freely disposed on said cable alternately with said sleeves, said gripping elements having larger outer diameters than said sleeves.
In one preferred embodiment of the invention, the gripping elements are shaped to correspond with the shape of notches arranged in the pulleys disposed in the apparatus, these pulleys being driven in rotation, and in turn driving the pulling device along the path defined by the axis of its central cable.
FIG. 2 is a longitudinal cross-sectional view of a portion of :a gripping device according to the present invention; and FIG. 3 is a plan view of a portion of the device indicated FIG. 2 together with its driving pulley. The pulling machine shown in FIG. 1 comprises a frame 1 which is rotatable about the axis of the elongated element 2 which is to be pulled in the direction of arrow f. Frame 1 carries, at one of its ends, two return pulleys 3a and 3b and two guide pulleys 4a .and 4b. At its other end, the frame carries a second pair of guide pulleys 5a and 5b and two driving pulleys 6a and 6b. These driving pulleys are each rigidly connected to a respective one of the pinions 7a and 7b engaging a conical pinion 8.
Between these various pulleys is passed .a pulling device 9 which is constituted, in the prior art, by an endless cable wrapped around the element to be pulled in the manner of a multiply-threaded screw. Each element of the cable passes the pulleys in the following order: 6a, 5a, 4a, 3a, 6b, 5b, 4b, 3b and 6a.
When the frame is driven in the direction of arrow F (counter-clockwise if one were to view the machine from the left of the figure), with the aid of any well-known driving means (not shown), the device 9 wraps on to the element 2 at the end of the frame removed from pinion 8 and unwraps therefrom at the other end of the frame. At the same time, the portions of cable 9 which are wrapped around the element 2 are driven in the direction of the cable axis by pinions 7a and 7b, thus pulling element 2 in the direction of arrow 1.
It is known that, with the pinion 8 being maintained motionless, a proper choice of both the gear ratio between the pinions and of the diameters of the driving pulleys 6a and 6b enables the element 2 to be pulled in the direction of arrow 1 without experiencing any twisting about its own axis. Equally, if the various parts of the apparatus have the above-described dimensions and pinion 8 is rotated at a rate N, the element 2 will move in the direction of arrow f while turning about its own axis at a rate N.
It thus results that the apparatus can pull an elongated element while causing it either to turn or not about its own axis.
In the prior art device 9 has usually been constituted by a metallic cable whose ends are joined together and which is covered by a sheath of a material such as rubber.
FIGS. 2 and 3 show .a pulling device and pulley according to the present invention correspond, in function, to device 9 and, for example, pulley 6a of FIG. 1.
The pulling device of this invention, designated in general by reference numeral 19, is composed of a central core 20 constituted, for example, by a metallic cable.
Upon this core are fixed spaced sleeves 21a to 21n. The two ends of the core are joined together by any known means such as the junction sleeve 22.
Annular elements 23a to 23n are slid onto cable 20 so as to alternate with sleeves 21a to 2121. These elements are free to rotate with respect to core 20 and the sleeves 21, but are prevented from moving longitudinally of core 20 by the abutment of said sleeves.
Elements 23a to 2311 are made of a relatively supple material, such as rubber, having a suitable coeflicient of friction.
Device '19 is moved along the path described by its longitudinal axis by at least one notched pulley 24, with elements 23 coming to lodge in the notches of the pulley when this pulley is driven in rotation.
One pulley 24 is intended to replace at least one of the pulleys 6a and 6b of FIG. 1 and to be rigidly connected to one of the gears 7a and 7b which engages pinion 8.
Pulling device 19 is substituted for the device 9 of FIG. 1, is wrapped around the element 2 and bears thereagainst through the intermediary of elements 23.
The apparatus thus modified functions in exactly the same manner as that described in connection with FIG. 1.
It has been observed that an apparatus furnished with the means of the present invention performs the pulling operation in a highly satisfactory manner, equally well when the element 2 rotates about its axis or not. This improved result is believed to be due to the improved ability of the engaged surfaces 23 of the portion of the cable wrapped around element 2 to conform to the shape of the element.
While one preferred embodiment of the present invention has been shown and described herein, it should he appreciated that many variations and modifications may be given thereto without departing from the spirit of this invention and that its coverage should therefore be limited only by the scope of the appended claims.
What I claim is:
1. A device for use in a traction apparatus for pulling an elongated element, said apparatus comprising a frame rotating about the aXis of the element to be pulled and carrying a plurality of pulleys for guiding and driving said device in a path defined by its longitudinal axis, said device being intended to have the form of a doubled loop which is wrapped around said element in the manner of the multiple threads of a screw so that the portions of said device which contact said element move in the direction of the longitudinal axis of said element, and urge said element in this direction, characterized in that said device comprises in combination: a supple central cable whose ends are joined together to form a continuous loop; a plurality of sleeves disposed along, and rigidly connected to said cable at regular intervals; and a plurality of supple, annular gripping elements having high friction surfaces and freely disposed on said cable alternately with said sleeves, said gripping elements having larger outer diameters than said sleeves.
2. A device according to claim 1, characterized by the fact that said gripping elements are shaped to correspond with the shape of notches arranged in at least one driving pulley of said apparatus.
References Cited by the Examiner UNITED STATES PATENTS SAMUEL F. COLEMAN, Primary Examiner.

Claims (1)

1. A DEVICE FOR USE IN A TRACTION APPARATUS FOR PULLING AN ELONGATED ELEMENT, SAID APPARATUS COMPRISING A FRAME ROTATING ELEMENT, SAID APPARATUS COMPRISING A FRAME CARRYING A PLURALITY OF PULLEYS FOR GUIDING AND DRIVING SAID DEVICE IN A PATH DEFINED BY ITS LONGITUDINAL AXIS, SAID DEVIDE BEING INTENDED TO HAVE THE FORM OF A DOUBLED LOOP WHICH IS WRAPPED AOUND SAID ELEMENT IN THE MANNER OF THE MULTIPLE THREADS OF A SCREW SO THAT THE PORTIONS OF SAID DEVICE WHICH CONTACT SAID ELEMENT MOVE IN THE DIRECTION OF THE LONGITUDINAL AXIS OF SAID ELEMENT, AND URGE SAID ELEMENT IN THIS DIRECTION, CHARACTERIZED IN THAT SAID DEVICE COMPRISES IN COMBINATION: A SUPPLE CENTRAL CABLE WHOSE ENDS ARE JOINED TOGETHER TO FORM A CONTINUOUS LOOP; A PLURALITY OF SLEEVES DISPOSED ALONG, AND RIGIDLY CONNECTED TO SAID CABLE AT REGUALR INTERVALS; AND A PLURALITY OF SUPPLE, ANNULAR GRIPPING ELEMENTS HAVING A HIGH FRICTION SURFACES AND FREELY DISPOSED ON SAID CABLE ALTERNATELY WITH SAID SLEEVES, SAID GRIPPING ELEMENTS HAVING LARGER OUTER DIAMETERS THAN SAID SLEEVES.
US414790A 1963-11-29 1964-11-30 Traction device for a unit for pulling an elongated element Expired - Lifetime US3265269A (en)

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FR955440A FR1384833A (en) 1963-11-29 1963-11-29 tractor unit for pulling equipment for a long unit

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261671A (en) * 1977-09-26 1981-04-14 Shell Oil Company Corrugated pipe for deepwater applications
US4274574A (en) * 1980-01-16 1981-06-23 Illinois Tool Works Inc. Linear motion cable drive
FR2499054A1 (en) * 1981-01-30 1982-08-06 Illinois Tool Works Linear motion cable drive - has drive cable wrapped helically on driven cable and rotated to cancel effects of helical wrapping
FR2567864A1 (en) * 1984-07-19 1986-01-24 Sciard Alain Linear traction device for the displacement of loads such as rods, rigid or flexible pipes, cables or, more generally, objects whose axial dimensions are large with respect to their transverse dimensions
EP0215636A2 (en) * 1985-09-11 1987-03-25 Illinois Tool Works Inc. Drive belts for a linear cable drive mechanism
EP0236026A2 (en) * 1986-02-25 1987-09-09 Deep Ocean Engineering, Incorporated Tether cable management apparatus and method for a remotely-operated underwater vehicle
US4740658A (en) * 1986-12-02 1988-04-26 Hubbell Incorporated Pushing and pulling cable
EP0338932A1 (en) * 1988-04-22 1989-10-25 Guy Neyret Traction drive for elongate material with an almost constant section
WO1994027879A1 (en) * 1993-05-27 1994-12-08 E.I. Du Pont De Nemours And Company Capping assembly for use with sealed tubes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3740300A1 (en) * 1987-11-27 1988-10-20 Bernhard Moll Round toothed belt
US5993345A (en) * 1997-10-27 1999-11-30 Borg-Warner Automotive, Inc. Compression fixed ratio chain

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983417A (en) * 1959-03-26 1961-05-09 Wire Machinery Corp Of America Track-laying capstan
US3144949A (en) * 1962-01-19 1964-08-18 Delore Sa Geoffroy Cable hauling apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1119158A (en) * 1952-03-25 1956-06-15 Geoffroy Delore Improvements to traction and braking devices for cables and the like

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983417A (en) * 1959-03-26 1961-05-09 Wire Machinery Corp Of America Track-laying capstan
US3144949A (en) * 1962-01-19 1964-08-18 Delore Sa Geoffroy Cable hauling apparatus

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4261671A (en) * 1977-09-26 1981-04-14 Shell Oil Company Corrugated pipe for deepwater applications
US4274574A (en) * 1980-01-16 1981-06-23 Illinois Tool Works Inc. Linear motion cable drive
FR2499054A1 (en) * 1981-01-30 1982-08-06 Illinois Tool Works Linear motion cable drive - has drive cable wrapped helically on driven cable and rotated to cancel effects of helical wrapping
FR2567864A1 (en) * 1984-07-19 1986-01-24 Sciard Alain Linear traction device for the displacement of loads such as rods, rigid or flexible pipes, cables or, more generally, objects whose axial dimensions are large with respect to their transverse dimensions
EP0215636A2 (en) * 1985-09-11 1987-03-25 Illinois Tool Works Inc. Drive belts for a linear cable drive mechanism
EP0215636A3 (en) * 1985-09-11 1988-10-19 Illinois Tool Works Inc. Drive belts for a linear cable drive mechanism
EP0236026A2 (en) * 1986-02-25 1987-09-09 Deep Ocean Engineering, Incorporated Tether cable management apparatus and method for a remotely-operated underwater vehicle
EP0236026A3 (en) * 1986-02-25 1988-01-07 Deep Ocean Engineering, Incorporated Tether cable management apparatus and method for a remotely-operated underwater vehicle
US4740658A (en) * 1986-12-02 1988-04-26 Hubbell Incorporated Pushing and pulling cable
EP0338932A1 (en) * 1988-04-22 1989-10-25 Guy Neyret Traction drive for elongate material with an almost constant section
FR2630418A1 (en) * 1988-04-22 1989-10-27 Neyret Guy TRACTION DRIVE DEVICE OF LONG MATERIAL WITH SUBSTANTIALLY CONSTANT SECTION
WO1994027879A1 (en) * 1993-05-27 1994-12-08 E.I. Du Pont De Nemours And Company Capping assembly for use with sealed tubes

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DE1262716B (en) 1968-03-07
GB1075757A (en) 1967-07-12
FR1384833A (en) 1965-01-08

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