US3640056A - Hay-harvesting implements - Google Patents

Hay-harvesting implements Download PDF

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Publication number
US3640056A
US3640056A US865800A US3640056DA US3640056A US 3640056 A US3640056 A US 3640056A US 865800 A US865800 A US 865800A US 3640056D A US3640056D A US 3640056DA US 3640056 A US3640056 A US 3640056A
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US
United States
Prior art keywords
spindle
implement
arm
support
tined
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
US865800A
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English (en)
Inventor
Martin Maier
Eberhard Wolf
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
Application granted granted Critical
Publication of US3640056A publication Critical patent/US3640056A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A01D78/1071—Having only one rotor

Definitions

  • ABSTRACT A hay-harvesting machine of the type using a tined body rotating about a vertical axis, comprises a ground-engaging wheel mounted on a pivoting support arm whose inclination can be changed, for adjusting the ground clearance of the implement, by means of a threaded rod, which can be turned to cause it to move vertically, and whose lower end is guided in bearing means and is connected with the arm by means of one or more links in a pivoting manner.
  • the present invention relates to hay-making implements and more particularly to a device for setting the ground clearance of a hay-harvesting implement comprising at least one tined body arranged to be driven about an approximately vertical shaft and arranged to be supported by means of a support wheel joumaled on a pivoting support arm, a threaded spindle being connected with the arm and passing through a hollow vertical shaft of the tined body, for vertical adjustment.
  • a hay-harvesting machine of this type has already been proposed in which the support wheel is arranged at the end of a two-armed carrier, which is joumaled on a projecting arm on the stationary hollow shaft for vertical pivoting movement.
  • the other end of the two-armed carrier is provided with a rotating nut part which can be shifted slightly in the longitudinal direction of the carrier and surrounds the threaded spindle passing through the hollow shaft.
  • the upper end of the threaded spindle is extended in an upward direction from the tined body and provided with a handcrank. By rotating the handcrank the support wheel can be pivoted about the pivot point of the two-armed carrier so that the tined body can be adjusted in relation to the body.
  • One object of the present invention is to construct an adjusting device of the above-described type in such a manner that the forces required for holding the wheel in position do not appear as transverse forces in the threaded spindle and only act in the axial direction of the spindle.
  • An important feature of the invention resides in that the end of the threaded spindle adjacent to the wheel is supported by means of a bearing fixed to a frame of the machine and is connected in a pivoting manner by one or more links with the arm carrying the support wheel.
  • a further important feature of the invention resides in that the upper end of the threaded spindle is passed through a nut which can rotate about the axis of the threaded spindle and is prevented from shifting axially, while the other end has a bolt passing through it which is perpendicular to the axis of the threaded spindle, the bolt extending on both sides from the spindle and fitting into vertical slots on both sides of the threaded spindle in the direction of movement of the support wheel stationary plates.
  • the bolt guided in the slot prevents a rotation of the threaded spindle and transmits the transverse forces to the plates.
  • the carrying arm is pivoted in a projection from the stationary plates for movement about a horizontal axis perpendicular to the direction of travel and on the carrying arm the links are connected, at a distance from its pivot axis, which are themselves connected in a pivoting manner with the bolt of the threaded spindle.
  • the spindle nut forms part of, or is in the form of, a bevel gear which is coaxial with the axis of rotation and is in engagement with a further bevel gear which can be operated by means of a hand crank on a rod. Operation of the handcrank serves to adjust the height of the machine.
  • the threaded spindle is joumaled in the hollow shaft of the tined body so that it can rotate but cannot be shifted axially and at its lower end is fitted into a spindle nut which is guided in the vertical slots of the stationary plates and is connected via the links with the support wheel.
  • the transverse forces are transmitted by the spindle nut to the plates.
  • crank rod is connected by means of a single or double universal joint with the threaded spindle.
  • the handcrank can be arranged outside the circle of rotation of the tined body.
  • the handcrank can be actuated from the tractor seat.
  • FIG. 1 is a side view of the hay-harvesting machine with the ground-clearance setting device, partially in section.
  • FIG. 2 is a view of the machine looking in the direction of the arrow ll of FIG. 1.
  • FIG. 3 is a side view of a further embodiment of the setting device, partially in section.
  • the diagrammatic drawing shows a hay-harvesting machine with a vertical hollow shaft 1 which is rigidly connected with a frame 2 of the machine. On the frame 2 and on the hollow shaft 1 a tined body 3 is arranged for rotation. The tined body 3 is driven via bevel gearing 4 about the hollow shaft 1 from the PT O-shaft of the tractor.
  • the hollow shaft 1 has a threaded spindle 5 passing through it whose upper end, in the embodiment in accordance with FIGS. l and 2, passes through a threaded nut 6.
  • the nut 6 is joumaled so as to be coaxial in relation to the hollow shaft 1 in the frame 2 of the hay-harvesting machine but is prevented from moving axially.
  • the lower end of the threaded spindle 5 which extends down below the hollow shaft 1 has a bolt 7 which is transverse in relation to the spindle axis and extends from the spindle to both sides to form trunnions.
  • Two plates 8 are connected with (fixed to) the lower end of the hollow shaft 1.
  • the two plates 8 are vertical and parallel to the direction of travel. They lie on both sides of the threaded spindle 5 as shown in FIG. 2.
  • the plates 8 have vertical slots 9 in which the free ends of the bolt 7 are guided.
  • a link 10 is pivoted which is connected with a carrying arm 11 of a support wheel 12 or alternatively with a pair of arms of a support wheel shaft 12'.
  • That end of the carrying arm or arms 1 l which is removed from the support wheel 12 or the shaft 12' is attached to a projection 13 of the plates 8 fixed to the hollow shaft 1 for pivoting movement about a horizontal pin 14 which is transverse in relation to the direction of travel.
  • the nut 6 has a bevel gear 15 coaxial to the spindle axis and meshing with a bevel gear 16 which is rigidly connected with a rod 17 extending so as to be within the reach of the tractor driver.
  • the free end of the rod 17 is made in the form of a handcrank 18.
  • the threaded spindle 5 is arranged so as to be able to rotate but is prevented from moving axially.
  • the lower end of the threaded spindle 5 fits into a nut 19.
  • the spindle nut 19 is arranged so that it can move axially but is prevented from rotating.
  • n trunnions 20 of the nut 19, which fit into the slot 9, the links 10 are arranged. These links are connected with the carrying arm or arms 11 of the support wheel 12.
  • the support force needed for holding the support wheels 12 is transferred by the links to the threaded spindle 5. Since the links 10 are not directed in the axial direction of the threaded spindle, transverse forces arise which are transferred by the trunnions 20 and the bolt 7 in the slots 9 to the plates 8. The threaded spindle is therefore not subjected to any bending forces and can therefore be made less stout than would otherwise be required.
  • the various parts whose size depends upon the size of the threaded spindle, such as ball bearings and the like, can thus be smaller.
  • a hay-harvesting implement comprising a frame, a tined body arranged to rotate about an upright axis, groundengaging sheel means arranged to support the body, a vertical threaded spindle coaxially extending inside the tined body and arranged to be turned for bringing about axial movement, and support arm means carrying the wheel means and connected with a lower end of the spindle
  • the improvement which comprises: bearing means guiding the lower end of the spindle, the bearing means being rigidly connected with the frame of the implement; link means pivotally connecting the lower end of the spindle andthe carrying arm; an axially fixed rotary nut mounted on an upper end of the spindle; trunnions fixed to the lower end of the spindle; and vertical plates to each side of the spindle, the vertical plates having vertical slots into which the trunnions extend.
  • a hay-harvesting implement comprising a frame, a tined body arranged to rotate about an upright axis, groundengaging wheel means arranged to support the body, a vertical threaded spindle coaxially extending inside the tined body and arranged to be turned for bringing about axial movement, and support arm means carrying the wheel means and connected with a lower end of the spindle, the improvement which comprises: bearing means guiding the lower end of the spindle, the bearing means being rigidly connected with the frame of the implement; link means pivotally connecting the lower end of the spindle and the carrying arm; a frame .part to which the arm is pivotally attached for movement about a pivot axis perpendicular to the direction of travel of the implement, and link means connecting with trunnions with the arm in a pivotal manner.
  • An implement as defined in claim 1 further comprising bevel gear means attached to the nut, further bevel gear means meshing with the first-mentioned bevel gear means, and a crank connected with the second-mentioned bevel gear means.
  • a hay-harvesting implement comprising a frame, a tined body arranged to rotate about an upright axis, groundengaging wheel means arranged to support the body, a vertical threaded spindle coaxially extending inside the tined body and arranged to be turned for bringing about axial movement, and support arm means carrying the wheel means and connected with a lower end of the spindle
  • the improvement which comprises: bearing means guiding the lower end of the spindle, the bearing means being rigidly connected with the frame of the implement; link means pivotally connecting the lower end of the spindle and the carrying arm;, said threaded spindle being axially fixed while being capable of rotating; a nut surrounding the lower end of the threaded spindle and arranged to be raised and lowered by rotation of the threaded spindle; vertical plates on either side of the lower end of the threaded spindle, the vertical plates having vertical slots in them, trunnions on the nut extending into the vertical slots; and links pivotally connected with the
  • An implement as defined in claim 4 further comprising a generally horizontal rod with a cranked end arranged to be turned manually, and universal joint means connecting the rod with the threaded spindle for rotation of the threaded spindle by turning the crank end of the rod.
  • a hay-harvesting implement comprising a support; a tined body rotatably mounted on said support and having a generally vertical axis; means on said support offset from said axis and defining a fulcrum; a spindle extending along said axis and provided at a lower end with a pivot; screw thread means cooperating with an upper end of said spindle for vertically displacing said pivot; a support arm swingably mounted on said fork at one end thereof and provided at its other end with a support wheel; a link articulated to said arm intermediate its ends and swingably mounted on said pivot for translating axis movement of said pivot into an angular displacement of said arm about said fulcrum; and guide means on said support constraining said pivot to movement parallel to said axis.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Agricultural Machines (AREA)
  • Soil Working Implements (AREA)
US865800A 1968-11-06 1969-10-13 Hay-harvesting implements Expired - Lifetime US3640056A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1807318A DE1807318C3 (de) 1968-11-06 1968-11-06 Vorrichtung zum Einstellen des Bodenabstandes einer Heuwerbungsmaschine

Publications (1)

Publication Number Publication Date
US3640056A true US3640056A (en) 1972-02-08

Family

ID=5712524

Family Applications (1)

Application Number Title Priority Date Filing Date
US865800A Expired - Lifetime US3640056A (en) 1968-11-06 1969-10-13 Hay-harvesting implements

Country Status (6)

Country Link
US (1) US3640056A (de)
AT (1) AT309129B (de)
CH (1) CH497829A (de)
DE (1) DE1807318C3 (de)
FR (1) FR2022684A1 (de)
NL (1) NL157188B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502959A (en) * 1992-02-26 1996-04-02 Kverneland Taarup As Tedder with adjustable rake rotors

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT314248B (de) * 1971-04-21 1974-03-25 Poettinger Ohg Alois Lagerung der ungelenkten Nachlaufräder von landwirtschaftlichen Geräten
DE3741563A1 (de) * 1987-12-08 1989-06-22 Josef Lesslhumer Heuwerbungsmaschine
DE3917091C1 (de) * 1989-05-26 1990-04-26 Maschinenfabriken Bernard Krone Gmbh, 4441 Spelle, De
NL8901359A (nl) * 1989-05-30 1990-12-17 Zweegers & Zonen P J Maaimachine.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL302966A (de) * 1959-10-23
FR1352702A (fr) * 1962-04-25 1964-02-14 Bucher Guyer Ag Masch Machine de fenaison
CH397313A (de) * 1962-01-22 1965-08-15 Fahr Ag Maschf Heuerntemaschine mit einem zwangläufig angetriebenen Axialzinkenrad
DE1202554B (de) * 1963-10-04 1965-10-07 Fahr Ag Maschf Heuwerbungsmaschine
CH458823A (de) * 1967-07-14 1968-06-30 Bucher Guyer Ag Masch Heuerntemaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL302966A (de) * 1959-10-23
CH397313A (de) * 1962-01-22 1965-08-15 Fahr Ag Maschf Heuerntemaschine mit einem zwangläufig angetriebenen Axialzinkenrad
FR1352702A (fr) * 1962-04-25 1964-02-14 Bucher Guyer Ag Masch Machine de fenaison
DE1202554B (de) * 1963-10-04 1965-10-07 Fahr Ag Maschf Heuwerbungsmaschine
CH458823A (de) * 1967-07-14 1968-06-30 Bucher Guyer Ag Masch Heuerntemaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502959A (en) * 1992-02-26 1996-04-02 Kverneland Taarup As Tedder with adjustable rake rotors

Also Published As

Publication number Publication date
CH497829A (de) 1970-10-31
AT309129B (de) 1973-08-10
NL6916183A (de) 1970-05-11
DE1807318C3 (de) 1974-02-07
DE1807318A1 (de) 1970-08-13
NL157188B (nl) 1978-07-17
FR2022684A1 (de) 1970-08-07

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