CA1075914A - Linkage for self-propelled swather - Google Patents
Linkage for self-propelled swatherInfo
- Publication number
- CA1075914A CA1075914A CA267,367A CA267367A CA1075914A CA 1075914 A CA1075914 A CA 1075914A CA 267367 A CA267367 A CA 267367A CA 1075914 A CA1075914 A CA 1075914A
- Authority
- CA
- Canada
- Prior art keywords
- frame
- axes
- implement
- swather
- parallel
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D41/00—Combines, i.e. harvesters or mowers combined with threshing devices
- A01D41/12—Details of combines
- A01D41/14—Mowing tables
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01D—HARVESTING; MOWING
- A01D57/00—Delivering mechanisms for harvesters or mowers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
Abstract
ABSTRACT
Linkage for mounting a harvesting implement on the front end of a power driven vehicle to permit limited independent movements of at least a portion of the implement relative to the vehicle. A plurality of support arms have rear ends connected to the frame of the vehicle and front ends of all but one thereof pivotally connected to the implement, cooperating with means for moving the arms in directions to raise and lower the implement.
A connector has spaced portions connected to the implement and to the front end of said one of the arms to provide for compound pivotal and limited generally forward and rearward swinging move-ments of said one arm and implement relative to each other, so that one end portion of the implement may partake of limited generally vertical floating movement relative to the other end portion thereof.
Linkage for mounting a harvesting implement on the front end of a power driven vehicle to permit limited independent movements of at least a portion of the implement relative to the vehicle. A plurality of support arms have rear ends connected to the frame of the vehicle and front ends of all but one thereof pivotally connected to the implement, cooperating with means for moving the arms in directions to raise and lower the implement.
A connector has spaced portions connected to the implement and to the front end of said one of the arms to provide for compound pivotal and limited generally forward and rearward swinging move-ments of said one arm and implement relative to each other, so that one end portion of the implement may partake of limited generally vertical floating movement relative to the other end portion thereof.
Description
759~4 This invention relates generally to agricultural implements, and more specifically to improvements in means for supporting an agricultural implement, such as a swather, from the front end of a propelling vehicle, for the purpose of dis-posing the swather to follow closely variations in ground contour during movement of the swather through a field.
An important object of this invention is the provision of a simple and inexpensive connection between a swather and the supporting means therefor for automatically lowering one end of a swather responsive to raising of the opposite end thereof.
Statement of the Invention In a self propelled swather which comprises propelling - means including a mobile frame, a harvesting implement includes a header frame, a crop gathering reel, a mower, and means for discharging cut crop into a windrow. The header frame includes a pair of laterally spaced forwardly projecting lower legs and an upper transverse frame member. Mounting means for mounting the header frame on said mobile frame for generally vertical movements relative to the mobile frame, and for imparting movements to the header frame, includes laterally spaced pairs of vertically spaced upper and lower support arms having rear ends pivotally connected to said mobile frame on parallel axes extending transversely of ``
the direction of travel of the swather. The support arms of one of said pairs have front ends pivotally connected to said header frame on fixed axes parallel to the axes of pivotal connection of their rear ends to said mobile frame. The invention is char-acterized by means pivotally connecting the front end of one of the support arms of said lower pair thereof to one of said lower legs on a fixed axis parallel to said axes, and a connector link having one end pivotally connected to the front end of the other support arm of said lower pair and an opposite end to the other lower leg for pivotal and limited generally forward and rearward swinging movements relative to said other lower leg, the axis of said pivotal movements being parallel to said axes.
1~759~4 Description of the Drawings Figure 1 is a fragmentary view in side elevation of a swather mounted on the front end of a propelling vehicle, such as a tractor;
Figure 2 is a fragmentary view in top plan of the swather and tractor of Figure 1, on a reduced scale, some parts being broken away;
Figure 3 is a view in front elevation;
Figures 4 and 5 are enlarged fragmentary sections taken on the lines 4-4 and 5-5, respectively, of Figure 2;
Figure 6 is an enlarged fragmentary section taken - generally on the line 6-6 of Figure l; and Figure 7 is an enlarged fragmentary section taken on the line 7-7 of Figure 3.
In the drawings, a conventional power-driven vehicle, such as a tractor, is shown fragmentarily, the front end thereof being indicated generally at 1. The tractor 1 is of a conven- ~:
tional and well-known type commonly used in connection with harvesting machines known as swathers, the combination of tractor and swather being usually designated as self propelled swathers. The tractor 1 includes a frame 2, the front end of : which is supported by a pair of pneumatic tire equipped wheels 3.
The swather shown in the drawings comprises a header frame 4 that includes a cross frame member 5 that extends trans-versely of the direction of travel of the swather, end frame members 6 that project forwardly from opposite ends of the frame member 5 and a pair of laterally spaced legs 7 having vertically extending portions 8, the upper ends of which are suitably secured to the cross frame member 5, and lower leg portions 9 that extend angularly forwardly and downwardly from the lower .' '~,~ .
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f 1~7~9~1 ends of the vertically extending portions ~. At their front ends, the end frame me~bers 6 are provided with the usual ground engaging s~ids 10 and separator or guide rods 11. The s~7ather further comprises the usual crop gathering reel 12, shown only in Figure 1, the same being carried by support arms 13, one of which is shown in Figure 1. The swather further includes the usual sickle bar mower 14, supported by the front ends of the lower leg portions 9, and a pair of draper conveyors 15 which convey the crop cut by the mo~er 14 toward the central opening 16 in the header frame 4, for discharge of the cut crop to the ground rearwardly of the swather. The swather heretofore described is of conventional corstruction, and in ana of itself does not comprise the instant invention. Hence, for the sake of brevity, further detailed description is omitted. It should suffice to state that the reel 12, mower 14, and draper conveyors lS are preferably operated from the usual power takeoff mechanism of the tractor through suitable power transmission mechanism not shown.
~eans for maunting the s~ather on the front end of the ~ractor frame 2 comprises laterally spaced pairs of generall~ ver-tically spaced upper and lower support arms, one of said pairs com-prisin~ upper and lower arms 17 and 18 respectively, the other pair thereof comprising upper and lower support arms 19 and 20 respect-ively. The upper support arms 17 and 19 are substantiallv iden-tical, each comprising a pair of upper arm sections 21 and 22 the former of which is provided with a hook 23 and a cooperating re-tainer member 24 for pivotally connecting its respective arm 17 and 19 to a pivot shaft 25 in the vertically extending portion 8 of a respective one of the legs 7, see particularly Figures 7.
The pivot sha.t 25 in each leg 7 is axially aligned ~ith the pivot shaft 25 of the opposite leg 7, the aligned axes of the shafts _ 25 being normally horizontally disposed and extending trans-., 07~
versely of the direction of travel of the s~ather. The front sec-tion 21 of each arm 17 and 19 is pivotally connected at its rear end to the intermediate portion of its respective rear arm section 22 by a pivot pin 26-parallel to its respective shaft 25, and the rear ends of the arm sections 22 are pivotally connected to mount-ing bars 27 by axially aligned pivot pins or bolts 28 parallel to the pins 25 and shafts 25, the mounting bars 27 being welded or othe~lise ri~idly secured to the front end of the tractor frame 2.
The rear upper arm sections 22 are rigidly secured together in s~aced apart relationship by a tubular cross member 29 that is welded or other~ise rioidly secured at its opposite ends to the arm sections 22, see particularly Figures 2 and 7. Counter balancing springs 30 are connected at one end to flanges 31 on the front arm sections 21, and at their opposite ends to brackets 32 on the front end portions of the tractor frame 2.
The rear ends of the ar~s 18 and 20 are pivotally secured, by means of pivot pins 33 to mounting brackets 34 on the front end - portion of the tractor frame 2, for upward and downward s~.7ing-ing movements on axes parallel to the axes of the shafts 25 and pivot pins 28. Torsion springs 35 yieldingly urge the arms 18 and 20 in an upward direction of swinging movement thereof. The front end of the lower arm 18 is provided with a hook element 36 and a retainer me~er 37, which cooperate to at least partiall~ encom-pass a hushing equipped pin 38 that extends transversely of the lower leg portion 9 of its respective leg 7, see particularly Fig-re 5. The legs 7, particularly the lower portions 9 thereof are channel shaped, the pivot pin 38 extending between opposite sides of its respective lower leg portion 9 on an axis parallel to the axes of the pivot pins 33. With reference to Figure 5, it will be noted that the hook elements 36 and retainer mem~er 37 are also disposed between opposite sides of their respective lower leg portion 9, the connection therebetween and the bushing equip-ped pivot pin 38 permitting pivotal movement between the arm 18 .
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and its respective leg 7. Preferably, the hook element 36 is welded to the front end of the lot~er arm 18, the retainer member 37 being removably secured to the hook element by a nut e~uipped bolt or similar fastening 39.
The hook element 40 is welded or otherwise rigidly secur-ed to the front end of the lower supoort arm 20, and has rigidly secured thereto, by means of a nut equipped screw 41, a retainer member 42, somewhat similar to the retainer member 37. A rigid shackle acting link 43 is formed at one end to provide a tubular head 44 that is journaled on a bushing equipped shaft or pin 45 preferably disposed in axial ali~nment with the pin 38, but mount-ed in the lower leg portion 9 adjacent the lower support arm 20.
At its opposite or lower end portion, the line 43 is for~ed to provide a bifurcated hook portion 46 that is adapted to straddle the retainer me~ber 42, and which has ri~idly secured thereto a shaft 47 received between the hook element 40 and retainer element , 42, see particularly Figures 4 and 6. In these figures, the hush-ing encompassed by the head 44 is indicated at 48. It will be noted that the shaft 47 is parallel to the pin 45 and bushin~ 48, ~o so that limited swinging movement is obtained between the support arm 20 and its respective leg 7 as shown by full and dotted , lines in Figure 4. As therein shown, the s~inging movement of the link 43 imparts generally upward and downward ~ovement to said respective leg 7 relative to the support arm 20.
The header fram.e ~ and parts carried thereby are raised or lowered with respect to the ground by means of a pair of fluid pressure operated cylinders 49 and cooperatin~ piston rods 50, one of each of which is shown in Figure 1. The lower closed end of each cylinZer 49is securedto the rear end portion of a respective one of the lower support arms 18 and 20, the outer or upper end of each piston rod 50 being pivotally secured to the front end por-tion of a respective one of the upper arm sections 22, as indicated at 51, see Figures 1 and 7. The connections between the ~nders .
1(~7591~
49 and their respective lower arms 18 and 20 are disposed in closely spaced reIationship to the pivot pins 33, the pivotal connection of one of the cylinders 49 to the lower support arm 20 being indicated at 52. Although not shown, it will be understood that the opposite cylinder 49 is pivotally connected to its re-spective lower support arm 18 in the same manner. The cylinders 49 may further be assumed to be connected to a suitable source of fluid under pressure, not shown, but mounted in the frame 2 of the tractor, in the usual manner, and being equipped with usual and well-known control elements, also not shown.
During movement of the above described apparatus over a field, with fluid in the cylinders 49 being under compression to hold the header frame at the required operating elevation, the . ~ .
link 43 is under tension, as shown by full lines in Figure 4.
Should the end of the implement nearest the lower support arm 20 encounter an obstruc*ion or unevenness in the ground, the skid 10 ` on the adjacent end of the header will tend to raise that end and cause the link 43 to swing rearwardly about the axis of the shaft 47, as shown by dash lines in Figure 4, and permitting the lower support arm 22 to swing upwardly and the support arm 18 to swing downwardly relative thereto to maintain the opposite end of the header in its predetermined operating level. Should said op-posite end of the header encounter an obstruction or contour of ` ground tending to raise said opposite end, the link 43 will swing in the opposite direction toward its position shown by short dotted lines in Figure 4 to maintain the adjacent end of the header in its predetermined operative height above ground level, the link 43 then becoming loaded in compression. Thus, it will be seen that with the simple expedient of a shackle like Iink 43, and its connection to a header frame and support arm, the har-vesting implement is enabled to traveI over uneven terrain while operating at or very close to an optimum set eIevation. `
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`' ' ,', 1C~7591 4 While the link 43 is sho~.m as being connected between a lower support ar~ and the header fra~e, it will be understood that the same may be connected between an upper support ar~ and the header frame, if desired.
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An important object of this invention is the provision of a simple and inexpensive connection between a swather and the supporting means therefor for automatically lowering one end of a swather responsive to raising of the opposite end thereof.
Statement of the Invention In a self propelled swather which comprises propelling - means including a mobile frame, a harvesting implement includes a header frame, a crop gathering reel, a mower, and means for discharging cut crop into a windrow. The header frame includes a pair of laterally spaced forwardly projecting lower legs and an upper transverse frame member. Mounting means for mounting the header frame on said mobile frame for generally vertical movements relative to the mobile frame, and for imparting movements to the header frame, includes laterally spaced pairs of vertically spaced upper and lower support arms having rear ends pivotally connected to said mobile frame on parallel axes extending transversely of ``
the direction of travel of the swather. The support arms of one of said pairs have front ends pivotally connected to said header frame on fixed axes parallel to the axes of pivotal connection of their rear ends to said mobile frame. The invention is char-acterized by means pivotally connecting the front end of one of the support arms of said lower pair thereof to one of said lower legs on a fixed axis parallel to said axes, and a connector link having one end pivotally connected to the front end of the other support arm of said lower pair and an opposite end to the other lower leg for pivotal and limited generally forward and rearward swinging movements relative to said other lower leg, the axis of said pivotal movements being parallel to said axes.
1~759~4 Description of the Drawings Figure 1 is a fragmentary view in side elevation of a swather mounted on the front end of a propelling vehicle, such as a tractor;
Figure 2 is a fragmentary view in top plan of the swather and tractor of Figure 1, on a reduced scale, some parts being broken away;
Figure 3 is a view in front elevation;
Figures 4 and 5 are enlarged fragmentary sections taken on the lines 4-4 and 5-5, respectively, of Figure 2;
Figure 6 is an enlarged fragmentary section taken - generally on the line 6-6 of Figure l; and Figure 7 is an enlarged fragmentary section taken on the line 7-7 of Figure 3.
In the drawings, a conventional power-driven vehicle, such as a tractor, is shown fragmentarily, the front end thereof being indicated generally at 1. The tractor 1 is of a conven- ~:
tional and well-known type commonly used in connection with harvesting machines known as swathers, the combination of tractor and swather being usually designated as self propelled swathers. The tractor 1 includes a frame 2, the front end of : which is supported by a pair of pneumatic tire equipped wheels 3.
The swather shown in the drawings comprises a header frame 4 that includes a cross frame member 5 that extends trans-versely of the direction of travel of the swather, end frame members 6 that project forwardly from opposite ends of the frame member 5 and a pair of laterally spaced legs 7 having vertically extending portions 8, the upper ends of which are suitably secured to the cross frame member 5, and lower leg portions 9 that extend angularly forwardly and downwardly from the lower .' '~,~ .
' .
f 1~7~9~1 ends of the vertically extending portions ~. At their front ends, the end frame me~bers 6 are provided with the usual ground engaging s~ids 10 and separator or guide rods 11. The s~7ather further comprises the usual crop gathering reel 12, shown only in Figure 1, the same being carried by support arms 13, one of which is shown in Figure 1. The swather further includes the usual sickle bar mower 14, supported by the front ends of the lower leg portions 9, and a pair of draper conveyors 15 which convey the crop cut by the mo~er 14 toward the central opening 16 in the header frame 4, for discharge of the cut crop to the ground rearwardly of the swather. The swather heretofore described is of conventional corstruction, and in ana of itself does not comprise the instant invention. Hence, for the sake of brevity, further detailed description is omitted. It should suffice to state that the reel 12, mower 14, and draper conveyors lS are preferably operated from the usual power takeoff mechanism of the tractor through suitable power transmission mechanism not shown.
~eans for maunting the s~ather on the front end of the ~ractor frame 2 comprises laterally spaced pairs of generall~ ver-tically spaced upper and lower support arms, one of said pairs com-prisin~ upper and lower arms 17 and 18 respectively, the other pair thereof comprising upper and lower support arms 19 and 20 respect-ively. The upper support arms 17 and 19 are substantiallv iden-tical, each comprising a pair of upper arm sections 21 and 22 the former of which is provided with a hook 23 and a cooperating re-tainer member 24 for pivotally connecting its respective arm 17 and 19 to a pivot shaft 25 in the vertically extending portion 8 of a respective one of the legs 7, see particularly Figures 7.
The pivot sha.t 25 in each leg 7 is axially aligned ~ith the pivot shaft 25 of the opposite leg 7, the aligned axes of the shafts _ 25 being normally horizontally disposed and extending trans-., 07~
versely of the direction of travel of the s~ather. The front sec-tion 21 of each arm 17 and 19 is pivotally connected at its rear end to the intermediate portion of its respective rear arm section 22 by a pivot pin 26-parallel to its respective shaft 25, and the rear ends of the arm sections 22 are pivotally connected to mount-ing bars 27 by axially aligned pivot pins or bolts 28 parallel to the pins 25 and shafts 25, the mounting bars 27 being welded or othe~lise ri~idly secured to the front end of the tractor frame 2.
The rear upper arm sections 22 are rigidly secured together in s~aced apart relationship by a tubular cross member 29 that is welded or other~ise rioidly secured at its opposite ends to the arm sections 22, see particularly Figures 2 and 7. Counter balancing springs 30 are connected at one end to flanges 31 on the front arm sections 21, and at their opposite ends to brackets 32 on the front end portions of the tractor frame 2.
The rear ends of the ar~s 18 and 20 are pivotally secured, by means of pivot pins 33 to mounting brackets 34 on the front end - portion of the tractor frame 2, for upward and downward s~.7ing-ing movements on axes parallel to the axes of the shafts 25 and pivot pins 28. Torsion springs 35 yieldingly urge the arms 18 and 20 in an upward direction of swinging movement thereof. The front end of the lower arm 18 is provided with a hook element 36 and a retainer me~er 37, which cooperate to at least partiall~ encom-pass a hushing equipped pin 38 that extends transversely of the lower leg portion 9 of its respective leg 7, see particularly Fig-re 5. The legs 7, particularly the lower portions 9 thereof are channel shaped, the pivot pin 38 extending between opposite sides of its respective lower leg portion 9 on an axis parallel to the axes of the pivot pins 33. With reference to Figure 5, it will be noted that the hook elements 36 and retainer mem~er 37 are also disposed between opposite sides of their respective lower leg portion 9, the connection therebetween and the bushing equip-ped pivot pin 38 permitting pivotal movement between the arm 18 .
, - . ~
1C~7S9~
and its respective leg 7. Preferably, the hook element 36 is welded to the front end of the lot~er arm 18, the retainer member 37 being removably secured to the hook element by a nut e~uipped bolt or similar fastening 39.
The hook element 40 is welded or otherwise rigidly secur-ed to the front end of the lower supoort arm 20, and has rigidly secured thereto, by means of a nut equipped screw 41, a retainer member 42, somewhat similar to the retainer member 37. A rigid shackle acting link 43 is formed at one end to provide a tubular head 44 that is journaled on a bushing equipped shaft or pin 45 preferably disposed in axial ali~nment with the pin 38, but mount-ed in the lower leg portion 9 adjacent the lower support arm 20.
At its opposite or lower end portion, the line 43 is for~ed to provide a bifurcated hook portion 46 that is adapted to straddle the retainer me~ber 42, and which has ri~idly secured thereto a shaft 47 received between the hook element 40 and retainer element , 42, see particularly Figures 4 and 6. In these figures, the hush-ing encompassed by the head 44 is indicated at 48. It will be noted that the shaft 47 is parallel to the pin 45 and bushin~ 48, ~o so that limited swinging movement is obtained between the support arm 20 and its respective leg 7 as shown by full and dotted , lines in Figure 4. As therein shown, the s~inging movement of the link 43 imparts generally upward and downward ~ovement to said respective leg 7 relative to the support arm 20.
The header fram.e ~ and parts carried thereby are raised or lowered with respect to the ground by means of a pair of fluid pressure operated cylinders 49 and cooperatin~ piston rods 50, one of each of which is shown in Figure 1. The lower closed end of each cylinZer 49is securedto the rear end portion of a respective one of the lower support arms 18 and 20, the outer or upper end of each piston rod 50 being pivotally secured to the front end por-tion of a respective one of the upper arm sections 22, as indicated at 51, see Figures 1 and 7. The connections between the ~nders .
1(~7591~
49 and their respective lower arms 18 and 20 are disposed in closely spaced reIationship to the pivot pins 33, the pivotal connection of one of the cylinders 49 to the lower support arm 20 being indicated at 52. Although not shown, it will be understood that the opposite cylinder 49 is pivotally connected to its re-spective lower support arm 18 in the same manner. The cylinders 49 may further be assumed to be connected to a suitable source of fluid under pressure, not shown, but mounted in the frame 2 of the tractor, in the usual manner, and being equipped with usual and well-known control elements, also not shown.
During movement of the above described apparatus over a field, with fluid in the cylinders 49 being under compression to hold the header frame at the required operating elevation, the . ~ .
link 43 is under tension, as shown by full lines in Figure 4.
Should the end of the implement nearest the lower support arm 20 encounter an obstruc*ion or unevenness in the ground, the skid 10 ` on the adjacent end of the header will tend to raise that end and cause the link 43 to swing rearwardly about the axis of the shaft 47, as shown by dash lines in Figure 4, and permitting the lower support arm 22 to swing upwardly and the support arm 18 to swing downwardly relative thereto to maintain the opposite end of the header in its predetermined operating level. Should said op-posite end of the header encounter an obstruction or contour of ` ground tending to raise said opposite end, the link 43 will swing in the opposite direction toward its position shown by short dotted lines in Figure 4 to maintain the adjacent end of the header in its predetermined operative height above ground level, the link 43 then becoming loaded in compression. Thus, it will be seen that with the simple expedient of a shackle like Iink 43, and its connection to a header frame and support arm, the har-vesting implement is enabled to traveI over uneven terrain while operating at or very close to an optimum set eIevation. `
.
.. .
`' ' ,', 1C~7591 4 While the link 43 is sho~.m as being connected between a lower support ar~ and the header fra~e, it will be understood that the same may be connected between an upper support ar~ and the header frame, if desired.
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Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a self propelled swather comprising propelling means including a mobile frame:
a harvesting implement including a header frame, a crop gathering reel, a mower, and means for discharging cut crop into a windrow;
said header frame including a pair of laterally spaced forwardly projecting lower legs and an upper transverse frame member;
mounting means for mounting said header frame on said mobile frame for generally vertical movements relative to said mobile frame and for imparting said movements to the header frame, said mounting means including laterally spaced pairs of generally vertically spaced upper and lower support arms having rear ends pivotally connected to said mobile frame on parallel axes extending transversely of the direction of travel of the swather;
the support arms of said upper pairs thereof having front ends pivotally connected to said header frame on fixed axes parallel to the axes of pivotal connection of their rear ends to said mobile frame;
characterized by:
means pivotally connecting the front end of one of the support arms of said lower pair thereof to one of said lower legs on a fixed axis parallel to said axes, and a connector link having one end pivotally connected to the front end of the other support arm of said lower pair and an opposite end to the other lower leg for pivotal and limited generally forward and rearward swinging movements relative to said other lower leg, the axis of said pivotal movements being parallel to said axes.
a harvesting implement including a header frame, a crop gathering reel, a mower, and means for discharging cut crop into a windrow;
said header frame including a pair of laterally spaced forwardly projecting lower legs and an upper transverse frame member;
mounting means for mounting said header frame on said mobile frame for generally vertical movements relative to said mobile frame and for imparting said movements to the header frame, said mounting means including laterally spaced pairs of generally vertically spaced upper and lower support arms having rear ends pivotally connected to said mobile frame on parallel axes extending transversely of the direction of travel of the swather;
the support arms of said upper pairs thereof having front ends pivotally connected to said header frame on fixed axes parallel to the axes of pivotal connection of their rear ends to said mobile frame;
characterized by:
means pivotally connecting the front end of one of the support arms of said lower pair thereof to one of said lower legs on a fixed axis parallel to said axes, and a connector link having one end pivotally connected to the front end of the other support arm of said lower pair and an opposite end to the other lower leg for pivotal and limited generally forward and rearward swinging movements relative to said other lower leg, the axis of said pivotal movements being parallel to said axes.
2. The self propelled swather defined in claim 1 in which said link has a hook-like end terminating in shaft means disposed on an axis parallel to the axis of pivotal connection of the link to its respective lower leg, and retainer means on the front end of said last mentioned lower support arm in pivotal engagement with said shaft means.
3. The self propelled swather defined in claim 2 in which said retainer means comprises a hook element partially encompassing said shaft means and a clip element engaging said shaft means in circumferentially spaced relation to said hook element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA267,367A CA1075914A (en) | 1976-12-07 | 1976-12-07 | Linkage for self-propelled swather |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA267,367A CA1075914A (en) | 1976-12-07 | 1976-12-07 | Linkage for self-propelled swather |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1075914A true CA1075914A (en) | 1980-04-22 |
Family
ID=4107466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA267,367A Expired CA1075914A (en) | 1976-12-07 | 1976-12-07 | Linkage for self-propelled swather |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1075914A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10398083B2 (en) * | 2015-09-09 | 2019-09-03 | Deere & Company | Multi head windrower |
-
1976
- 1976-12-07 CA CA267,367A patent/CA1075914A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10398083B2 (en) * | 2015-09-09 | 2019-09-03 | Deere & Company | Multi head windrower |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |