US3638977A - Pivot assembly for haymaking machines and the like - Google Patents

Pivot assembly for haymaking machines and the like Download PDF

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Publication number
US3638977A
US3638977A US647065A US3638977DA US3638977A US 3638977 A US3638977 A US 3638977A US 647065 A US647065 A US 647065A US 3638977D A US3638977D A US 3638977DA US 3638977 A US3638977 A US 3638977A
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US
United States
Prior art keywords
axis
beam sections
shaft
sections
pivot assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US647065A
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English (en)
Inventor
Josef Purrer
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.)
Maschinenfabrik Fahr AG
Original Assignee
Maschinenfabrik Fahr AG
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 Maschinenfabrik Fahr AG filed Critical Maschinenfabrik Fahr AG
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Publication of US3638977A publication Critical patent/US3638977A/en
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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D78/00—Haymakers with tines moving with respect to the machine
    • A01D78/08—Haymakers with tines moving with respect to the machine with tine-carrying rotary heads or wheels
    • A01D78/10—Haymakers with tines moving with respect to the machine with tine-carrying rotary heads or wheels the tines rotating about a substantially vertical axis
    • A01D78/1007—Arrangements to facilitate transportation specially adapted therefor
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B61/00—Devices for, or parts of, agricultural machines or implements for preventing overstrain
    • A01B61/02—Devices for, or parts of, agricultural machines or implements for preventing overstrain of the coupling devices between tractor and machine
    • A01B61/025—Devices for, or parts of, agricultural machines or implements for preventing overstrain of the coupling devices between tractor and machine the driving connections
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/10—Arrangements for locking
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
    • F16D1/101—Quick-acting couplings in which the parts are connected by simply bringing them together axially without axial retaining means rotating with the coupling
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • F16D11/08—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially
    • F16D11/10—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially with clutching members movable only axially
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32262—At selected angle
    • Y10T403/32319—At selected angle including pivot stud
    • Y10T403/32327—At selected angle including pivot stud including radially spaced detent or latch component
    • Y10T403/32336—Engaging notch or recess in outer periphery of component
    • 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
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32262—At selected angle
    • Y10T403/32319—At selected angle including pivot stud
    • Y10T403/32409—Members locked in axial alignment

Definitions

  • ABSTRACT A pivot assembly for the inwardly swingable outrigger beam of a rotary-rake haymaking implement having a pair of hollow beam sections relatively swingable to include an angle of 90 between them in one position thereof and axially aligned in another position thereof, a shaft extending through the beam sections and axially subdivided into a pair of interconnectable shaft sections disengaged from one another in said one position and mutually interconnected in said other position of the beam sections, and a ball joint interconnecting said beam sections for relative pivotal movement thereof between these positions about a vertical axis, laterally offset from the shaft in said other position and perpendicular to the axis thereof, and a horizontal axis generally parallel to one of the shaft sections, the axes intersecting one another.
  • FIG. 3 is a cross-sectional view taken generally along the line lll-lllofFlG. 1;
  • FIG. 4 is a plan view ofa portion ofthe device of FIG. 3;
  • FIGS. 5 and 6 are plan views of the interconnected parts of My present invention relates to a pivot assembly for 5 "hepivotassemblyiand haymaking machines and, more particularly, to a haymaking machine having a support beam for a plurality of rotary rakes which is subdivided longitudinally into a plurality of beam sections, and to the pivot means for interconnecting these sec-- 1 0 trons.
  • a haymaking machine adapted to be drawn by a towing vehicle, e.g., an agricultural tractor and to be driven by the power-takeoff shaft thereof.
  • This rake, turner or tedder comprises a generally horizontal beam which is subdivided longitudinally into a plurality of'beam sections, hingedly interconnected for swinging movement to enable the rotary rakes carried by these sections to be horizontally spaced apart transversely to the direction of movement of the implement during haymaking operations or to be disposed one behind another when the implement is to be transported over narrow roads.
  • Each beam section may be provided with respective support wheels upon which the beam rides and a plurality of rake heads forming housings for bevel gearing adapted to transmit the motive force from a shaft extending through and along the beam to the individual rakes.
  • the latter have hubs rotatable generally about upright axes and radical arms carrying at their extremities spring fingers for engagement with the ground crop.
  • the principal object of the present invention to provide a pivot assembly for hollow beam sections of the character described whereby the beam sections can be swung through angles of about 90. relatively to one another and yet can have their respective drive shafts coupled in an extended position of the unit.
  • Still another object of this invention is to provide an improved retaining means for a pivot assembly for adjoining beam sections which is substantially unaffected by variations in the terrain.
  • FIG. 1 is a plan view, partly in axial section, of the articulating or pivot assembly of a beam section for haymaking machines;
  • FIG. 2 is a view similar to FIG. 1 showing the assembly in its angular state corresponding to the transport position of the machine, as contrasted with the operating position shown in FIG. 1;
  • FIG. 7 is a plan view of a haymaking implement embodying the invention.
  • the implement basically comprises a support beam 101 which is subdivided longitudinally into sections 102, 103, I04. I05 and 106 by a pair of pivots 107 and 108 having vertical axes and a pair of pivots 109 and 110 having horizontal axes.
  • the tractor 111 has a drawbar 112 to which beam member 104 is attached by a linkage 113 and a power-takeoff shaft 114 to which the connecting shaft 115 is joined by universal couplings.
  • the shaft 115 is connected to the input shaft 116 of the implement by another universal coupling and in the manner described in the commonly assigned copending application mentioned above.
  • Each rake comprises a hub (not shown) driven by bevel gearing within the respective rake head 118 of the from the throughgoing shaft and with angularly equispaced radial arms 119 which carry spring fingers at their extremities as illustrated in the aforementioned copending application.
  • the beam 101 is extended transversely to the direction of advance of the implement (arrow 120) and treats a swath whose width W corresponds to the extended width of the assembly.
  • arms 103 and 105 are swung inwardly and rearwardly (dot-dash position) about their pivots 107 and 108, while arms 102 and 106 are swung upwardly and inwardly (dot-dash position) so that the contracted width w of the entire assembly is only a fraction of the original swath width.
  • the pivots 107 through 110 may be constituted as described in connection with FIGS. 1 through 6.
  • FIGS. 1 through 6 of the drawing I show a pair of beam sections 1 and 12 which are hingedly interconnected for swinging movement about a pivotal axis represented at 5' and formed by the intersection ofa vertical plane thru axes X-X and Y-Y, the axis 5 being offset inwardly from the vertical axial plane P of the beam sections 1 and 12 in their extended state.
  • the support tube or beam section 1 is provided with a generally flat laterally extending flange 2 which, as indicated in FIGS. 3 and 5, lies generally in a horizontal plane and is offset from the axial plane p of the shaft 8, 11; in this flange 2, I provide an arcuate upstanding ridge 2 which is transverse to the plane of the flange 2 and is provided at angularly offset locations with throughgoing radial bores 3 and 4 (FIGS. 2 and 5).
  • One of these bores (4) lies generally in the vertical plane p of the pivot axis YY while the other bore (3) lies in the vertical plane p, of the axis X-X.
  • a ball joint which is described in greater detail below. This ball joint defines the vertical axis X-X.
  • the horizontal plane P, of the ball joint contains the axes X-X and YY.
  • the ball joint is formed by the spherical head 6' of a ball member whose cylindrical shank 6 is located in the tubular boss 2a of flange 2 by a setscrew 6a.
  • a downwardly projected joint tongue 7 which projects into a longitudinal slot 14 at the free end of a spring member 13.
  • the lateral projection 12 of the tube 12 is formed with a spherical seat 12a which is open downwardly.
  • a radial bore 12b in which a cylindrical locking bolt 16 is urged radially outwardly (arrow 120) by a compression spring 17, the bolt 16 being dimensioned for engagement in the bores 3 and 4.
  • a handle 18 projects from the bolt 16 and passes through a slot 19 of the sleeve 12 to enable the operator to withdraw the bolt and swing the beam sections 1 and 12 relatively about the axis 2- Z.
  • the shaft sections 8 and 11, which deliver motive power to the rakes, as described in the aforementionedcopending application, are interconnected at the point of intersection ofthe planes by a coupling represented at 9, 10.
  • This coupling can include a claw-shaped socket 9 whose axially open recesses 9a form notches which are engaged by the lateral pins 10 of the shaft 11.
  • the assembly is resiliently held in place by locking strap 13 which is anchored by a bolt 15 to the beam 12 and underlies at its free end 13 the ball member 60.
  • the strap 13, whose slot 14 receives the projection 7 of the ball member 6, bears upwardly against the ball member while drawing the section 12 downwardly.
  • the handle 18 projects through the helicoidally extending camming slot 19 so that, as the lever 18 is rotated in the direction of arrow 18a (FIG. 6), the bolt 16 is drawn inwardly.
  • the beam sections 102 through 106 are carried by respective support wheels e.g., as described in the copending application, so that uneveness of the ground during the operative movement of the vehicle and implement in the direction of arrow 120 often causes strain at the junction between the shaft sections.
  • the bolt 16 is received in bore 3. Since the ball joint permits limited relative angular movement of beam sections 1 and 12 about the axis XX, uneveness can be accommodated without difficulty.
  • the ability of the ball member 6 thereof to swing in the slot 14 permits such movement about the axis XX or YY without straining the joint.
  • the slot 14 is dimensioned to permit an arcuate movement of at least 20 on either side of its normal position.
  • the outermost arms 102, 106 can be swung upwardly and the arms 103, 105 inwardly to the dot-dash position illustrated in FIG. 7.
  • This swinging movement is permitted by withdrawing the bolt 16 of the respective pivot assembly and permitting it to be forced spring 17 into the other bore 4 upon pivotal movement through 90 (FIG. 2).
  • This movement decouples the shaft sections 8 and 11 and affords compensation for road unevenness by permitting the members 1 and 12 to swing relatively through at least 20 on either side of the median position about the horizontal axis YY.
  • a pivot assembly comprising a pair of hollow beam sections relatively swingable to include an angle of less than l between them in one position thereof and axially aligned in another position thereof; a shaft extending through said beam sections and axially subdivided into a pair of interconnectable shaft sections disengaged from one another in said one position and mutually interconnected in said other position of said beam sections; and pivot means interconnecting said beam sections for relative pivotal movement thereof between said positions about a first axis laterally offset from said shaft in said other position and transverse to the axis thereof, and
  • pivot assembly defined in claim 1 wherein said pivot means includes a ball member mounted on one of said beam sections at a location laterally offset from said shaft, and a socket member formed on the other of said beam sections and receiving said ball member, said members forming a ball joint permitting at least limited pivotal movement of said beam sections in all relative angular positions thereof about a horizontal axis parallel to at least one of said beam sections.
  • pivot assembly defined in claim 2, further comprising a retaining strap fixed to said other beam section and underlying said ball member, said ball member and said strap being formed with mutually engaging formations permitting at least limited angular movement of said members about said horizontal axis and defining said limited angular movement.
  • pivot assembly defined in claim 2, further comprising slidable bolt means having an axis coplanar with said second axis and carried by said other section while cooperating with said one of said beam sections for locking the assembly in said positions.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Soil Sciences (AREA)
  • Agricultural Machines (AREA)
US647065A 1966-06-24 1967-06-19 Pivot assembly for haymaking machines and the like Expired - Lifetime US3638977A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM69954A DE1266556B (de) 1966-06-24 1966-06-24 Gelenkverbindung zwischen den Abschnitten einer mit Tragrohren versehenen Gelenkwelle

Publications (1)

Publication Number Publication Date
US3638977A true US3638977A (en) 1972-02-01

Family

ID=7313233

Family Applications (2)

Application Number Title Priority Date Filing Date
US647065A Expired - Lifetime US3638977A (en) 1966-06-24 1967-06-19 Pivot assembly for haymaking machines and the like
US8654A Expired - Lifetime US3583139A (en) 1966-06-24 1970-02-04 Pivot assembly for haymaking machines and the like

Family Applications After (1)

Application Number Title Priority Date Filing Date
US8654A Expired - Lifetime US3583139A (en) 1966-06-24 1970-02-04 Pivot assembly for haymaking machines and the like

Country Status (6)

Country Link
US (2) US3638977A (de)
AT (1) AT268756B (de)
CH (1) CH464588A (de)
DE (1) DE1266556B (de)
GB (1) GB1130838A (de)
NL (1) NL161335C (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038584A1 (de) * 1979-10-16 1981-04-30 Kuhn S.A., 67700 Saverne, Bas-Rhin Verbindungsvorrichtung fuer heuwerbungsmaschinen
US4366666A (en) * 1979-08-24 1983-01-04 C. Van Der Lely N.V. Haymaking machine
US4450915A (en) * 1980-09-22 1984-05-29 Dehaai Kermit M Self-propelled disk harrow
EP0664948A1 (de) * 1994-01-28 1995-08-02 Maasland N.V. Heuwerbungsmaschine
WO2001003553A1 (en) * 1999-07-09 2001-01-18 Adams Michael E Self-locking pivotal bracket with pivot stop
US6454233B1 (en) * 1999-07-09 2002-09-24 Michael E. Adams Disengageable self-locking pivotal bracket
EP1498020A1 (de) * 2003-07-16 2005-01-19 Maschinenfabrik Bernard Krone GmbH Heuwerbungsmaschine
US20060059881A1 (en) * 2004-09-23 2006-03-23 Kuhn S.A. Windrower for plant matter with three raking wheels
US20160016635A1 (en) * 2014-07-16 2016-01-21 Ford Global Technologies, Llc Bicycle wheel axle
EP3108740A1 (de) * 2015-06-26 2016-12-28 Forage Innovations B.V. Rechenelementarm für eine landwirtschaftliche maschine zur behandlung von gras, heu oder anderen kulturpflanzen sowie solch eine landwirtschaftliche maschine

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3731469A (en) * 1972-01-24 1973-05-08 Jacobsen Mfg Co Convertible gang lawn mower
US3760575A (en) * 1972-04-18 1973-09-25 G H Grimm Co Inc Hay tedding machine
DE2410453A1 (de) * 1974-03-05 1975-09-11 Schlittler Jacques Roby Dr Heuwerbungsmaschine
NL7405407A (nl) * 1974-04-22 1975-10-24 Lely Nv C Van Der Hooibouwmachine.
NL8401846A (nl) * 1984-06-12 1986-01-02 Multinorm Bv Inrichting voor het bewerken van op de bodem liggend gewas.
FR2582186B1 (fr) * 1985-05-21 1989-05-05 Kuhn Sa Perfectionnement aux machines de fenaison munies de plusieurs roues rateleuses
DE3543264A1 (de) * 1985-12-06 1987-06-11 Kloeckner Humboldt Deutz Ag Kreiselzettwender
DE3717307A1 (de) * 1987-05-22 1988-12-15 Kloeckner Humboldt Deutz Ag Landmaschine, insbesondere ein kreiselzettwender
NL8800065A (nl) * 1987-06-23 1989-01-16 Lely Nv C Van Der Hooibouwmachine.
DE3739485A1 (de) * 1987-11-21 1989-06-01 Claas Saulgau Gmbh Gelenkige rahmenverbindung fuer futtererntemaschinen
FR2740653B1 (fr) * 1995-11-07 1998-01-30 Kuhn Sa Machine de fenaison, notamment une faneuse, comportant un bati avec des parties laterales repliables
WO2015116282A1 (en) 2014-01-31 2015-08-06 Covidien Lp Interfaces for surgical systems
EP3463147A4 (de) 2016-05-26 2020-01-22 Covidien LP Robotische chirurgische anordnungen und instrumentenantriebseinheiten dafür
CA3022139A1 (en) 2016-05-26 2017-11-30 Covidien Lp Instrument drive units
US11272992B2 (en) 2016-06-03 2022-03-15 Covidien Lp Robotic surgical assemblies and instrument drive units thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1240359A (en) * 1917-04-27 1917-09-18 Bernard O'reilly Corpse-carrier.
US1689963A (en) * 1926-05-04 1928-10-30 B H Pelton Jr Concrete mixer and conveyer
GB581657A (en) * 1944-10-02 1946-10-21 Charles Frederick Deans Improvements in knuckle joints for lever arms

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE587806C (de) * 1933-11-09 Max Rostin Gelenk fuer Gelenkwellen
NL274886A (de) * 1961-02-17
FR1367040A (fr) * 1962-07-02 1964-07-17 Fahr Ag Maschf Faneuse à rotors à dents
NL302629A (de) * 1963-01-11
US3509707A (en) * 1966-09-06 1970-05-05 Fahr Ag Maschf Hingedly interconnected rotary rakes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1240359A (en) * 1917-04-27 1917-09-18 Bernard O'reilly Corpse-carrier.
US1689963A (en) * 1926-05-04 1928-10-30 B H Pelton Jr Concrete mixer and conveyer
GB581657A (en) * 1944-10-02 1946-10-21 Charles Frederick Deans Improvements in knuckle joints for lever arms

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4366666A (en) * 1979-08-24 1983-01-04 C. Van Der Lely N.V. Haymaking machine
DE3038584A1 (de) * 1979-10-16 1981-04-30 Kuhn S.A., 67700 Saverne, Bas-Rhin Verbindungsvorrichtung fuer heuwerbungsmaschinen
US4450915A (en) * 1980-09-22 1984-05-29 Dehaai Kermit M Self-propelled disk harrow
EP0664948A1 (de) * 1994-01-28 1995-08-02 Maasland N.V. Heuwerbungsmaschine
NL9400133A (nl) * 1994-01-28 1995-09-01 Maasland Nv Schudmachine.
US6454233B1 (en) * 1999-07-09 2002-09-24 Michael E. Adams Disengageable self-locking pivotal bracket
WO2001003553A1 (en) * 1999-07-09 2001-01-18 Adams Michael E Self-locking pivotal bracket with pivot stop
US20040217246A1 (en) * 1999-07-09 2004-11-04 Adams Michael E. Self-locking pivotal bracket connector combination
EP1498020A1 (de) * 2003-07-16 2005-01-19 Maschinenfabrik Bernard Krone GmbH Heuwerbungsmaschine
US20060059881A1 (en) * 2004-09-23 2006-03-23 Kuhn S.A. Windrower for plant matter with three raking wheels
US7380393B2 (en) * 2004-09-23 2008-06-03 Kuhn S.A. Windrower for plant matter with three raking wheels
US20160016635A1 (en) * 2014-07-16 2016-01-21 Ford Global Technologies, Llc Bicycle wheel axle
US9340251B2 (en) * 2014-07-16 2016-05-17 Ford Global Technologies, Llc Bicycle wheel axle
EP3108740A1 (de) * 2015-06-26 2016-12-28 Forage Innovations B.V. Rechenelementarm für eine landwirtschaftliche maschine zur behandlung von gras, heu oder anderen kulturpflanzen sowie solch eine landwirtschaftliche maschine
EP3750395A1 (de) * 2015-06-26 2020-12-16 Forage Company B.V. Rechenelementarm für eine landwirtschaftliche maschine zur behandlung von gras, heu oder anderen kulturpflanzen sowie solch eine landwirtschaftliche maschine

Also Published As

Publication number Publication date
NL6708404A (de) 1967-12-27
NL161335C (nl) 1980-02-15
US3583139A (en) 1971-06-08
AT268756B (de) 1969-02-25
GB1130838A (en) 1968-10-16
DE1266556B (de) 1968-04-18
NL161335B (nl) 1979-09-17
CH464588A (de) 1968-10-31

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