CA1042218A - Hay-making machines - Google Patents
Hay-making machinesInfo
- Publication number
- CA1042218A CA1042218A CA200,054A CA200054A CA1042218A CA 1042218 A CA1042218 A CA 1042218A CA 200054 A CA200054 A CA 200054A CA 1042218 A CA1042218 A CA 1042218A
- Authority
- CA
- Canada
- Prior art keywords
- making machine
- tines
- shaft
- hay making
- pivot
- 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
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- Soil Working Implements (AREA)
Abstract
A B S T R A C T
A hay-making machine has at least one rake member rotatable about an upwardly inclined axis. The rake carries tines which are outwardly pivot-able to a working position by the centrifugal forces caused by rotation of the rake. The tines are pivotable onto a transport position solely by means of their deadweight.
A hay-making machine has at least one rake member rotatable about an upwardly inclined axis. The rake carries tines which are outwardly pivot-able to a working position by the centrifugal forces caused by rotation of the rake. The tines are pivotable onto a transport position solely by means of their deadweight.
Description
This invention relates to a hay-making machine with at least one rake member rotatable about an upwardly directed axis of rotation and compris-ing tines, which are outward]y pivotable by centrifugal forces exerted during rotation of the rake member.
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According to the present invention there is provided a hay making machine comprising frame means and a~ least one rake member mounted for rotation about an upwardly extending axis on a shaft supported on said frame means, said rake member comprising a hub on said shaft and arms connected to said hub, tines mounted on the outer portions of said arms and said tines ;~ 10 each being freely pivotable relative to said hub through at least two spaced-apart pivot connections that connect the tines to the hub, said arms and tines being movable to outwardly directed operative working positions by ~; centrifugal forces during the operative rotation of said rake member.
For a better understanding of the invention and to show how the same 9 . may be carried into effect, reference is made by way of example to the accompanying drawings. 1 ~ Figure 1 is a plan view of a hay-making machine embodying the ', invention.
,' Figure 2 is a side elevation of the device shown in Figure 1. `~ -~
', 20 Figure 3 is an enlarged sectional view of the central part of a ;;
`'1 rake member.
;~ Figure 4 shown on an enlarged scale the connection of a support for `
,` the tines with the arm of the rake member. -~
.... .... ...
~, Figure 5 is an elevation in the direction of the arrow V in `;1 Figure 4.
'`' 1 , -'! Figure 6 is an enlarged elevation in the direction of the arrow Vl :~ in Figure 2.
1 Figure 7 is an enlarged elevation taken on the line VII-VII in "`i Figure 1. `' `~ 30 Figure 8 is a plan view of a hay-making machine embodying the invention in the transport position.
Figure 9 illustrates a second possibility of fastening an : .
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; arm of the rake member to the central part of said rake member.
, Figure 10 shows a tine support having four tines.
Figure 11 illustrates a third possibility of fastening an arm to -the central part of the rake member.
,. Figure 12 is a plan view of a second embodiment of a hay-making machine in accordance with the invention.
Figure 13 is a side elevation of the machine shown in Figure 12.
, Pigure 14 is an enlarged sectional view taken on the line XIV-XIV
in Figure 13.
' 10 Figure 15 illustrates on an enlarged scale the connection of an arm with the central part of the rake member and the connection of a tine ' support. :
Figure 16 is a plan view in the direction of the arrow XVI in Figure 15. ~-Figure 17 is a sectional view taken on the line XVII-XVII in 1 Figure 15. -:~ Figure 18 is an enlarged sectional plan view taken on the line h XVIII-XVIII in Figure 15.
, Figure 19 is a side elevation of the machine shown in Figure 12 ., ~ .
: 20 in the transport position.
Figure 20 is a side elevation of a working position of another -embodiment, in which the tine supports are pivotable relative to the arms.
Figure 21 illustrates on an enlarged scale the pivotal connection of a tine support.
Figure 22 is a side elevation of the device shown in Figure 20, the device bearing on the tine supports.
The construction shown in Figures 1 to 8 is that of a hay-making machine comprising a frame having an at least substantially horizontal frame ,~
beam 1, extending transversely of the direction of movement A of the device.
The frame 1 is tubular and preferably has a circular cross-section. The ends of the frame beam 1 are secured by means of connecting beams 2 extending in the direction of movement A to a foremost frame beam 4 of a protective ' .~
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.
1()4~2~1L8 . ~ , part 3. The frame beam 1 is connected with a frame beam 5 of the protective . part 3 by means of connecting beams 6, which are in line with the connecting . beams 2, viewed in plan (see Figure 1). The beams 4 and 5 of the protective ` part 3 are located slightly above the frame beam 1. Near the ends of the frame beam 1 within the connecting beams 2 struts 7 are arranged on the frame ~ beam 90 that, viewed in plan, they are converging and are secured to the --~ foremost beam 4. To the ends of the frame beam 1 are secured vertical plates s~
.~ 8, extending in downward direction. Between the lower ends of the plates 8 ~::
.. .. . . ..
, a tubular frame beam 9 extends parallel to the frame beam 1. The ends of ~ 10 the frame beam 1 are provided with gear boxes 10 in each of which a down-:; wardly extending shaft 11 is fastened. Each shaft 11 has a straight portion ~l 12A extending from its fastening point in the gear box 10 and terminating in :
~ a bracket-shaped portion 13, the limbs of which are at least substantially .:~ horizontal (Figure 3), the lower limb 14 forming a rotary shaft for a .
'' rotatable supporting member formed by a ground wheel 15. A rake member 12 .:
., is rotatably arranged on each shaft 11. For this purpose a support 16 , holding a bearing 17 is fastened at a given distance about the bracket-shaped ~ . .
. ~ .
'; portion 13 to the straight portion 12A of the shaft 11. The portion 12A ~ :-" . . ~ .: :
is furthermore surrounded by a sleeve 18 bearing on the bearing 17, the top ; ~:~
end of said sleeve holding a second bearing 19. The portion 12A is surround- '~
: ed between the bearing 19 and the gear box 10 by a sleeve 20. By means of ::,:
the bearings 17 and 19 a sleeve 21 is rotatably arranged and this sleeve is .
; provided at its top end with a ring 22 extending at least substantially at ,.
,;:
right angles to the longitudinal centre line of the portion 12A, said ring .. having fastened to it by bolts 23 a toothed rim 24. Near the lower end the :
`~. sleeve is provided with a ring 25 joining the circumference of the sleeve ` :~
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.: and having secured to it by means of bolts 25A a supporting ring 26, ,~
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(Figure 3). The sleeve 21 and the supporting ring 26 constitute a central part of a rake member 12. By means of the bolts 25A eight tags 27 are . 30 secured to the lower side of the supporting ring 26 at equal distances from ~:
' one another. The tags 27 comprise a straight portion 28 inclined downwardly ~ :
: away from the fastening area of the bolts 25A and terminating in a portion 29 ` . ~- .
i '''", . , ,: ~ ~3~ ' ~
parallel to the supporting ring 26. Between the supporting ring 26 and the portion 29 of a tag 27 a sleeve 31 is arranged by means of a pin 39 so as to be freely rotatable. The longitudinal centre line a of the pin 30 is parallel to the portion 12A, the longitudinal centre line of which _ con-stitutes the rotary axis of the rake member. The sleeve 31 is fastened to a tubular arm 32. The pin 30 is held by a head on the supporting ring 26 and is secured in place at its lower end by means of a locking pin 34.
Between the supporting ring 26 and the ring 22 supports 35 are arranged at equal distances from one another. The supports 35 extend away from the ~ -ring 22 in a downwardly inclined direction. The sleeve 31 is provided with an inwardly projecting extension 36, which is adapted to bear on a pin forming a stop 37 passed through a hole in the supporting ring 26 and adapted to be displaced against spring force in its axial direction so that the lower end of the pin can be moved out of the reach of the extension 36, :-in which position the pin can be secured against rotation.
As will be apparent from Figures 2 and 4 the arm 32 has two ~`
portions 33 and 38, provided at their proximal ends with a fork 39 and 40 respectively, the prongs of which extend upwardly. The prongs of the fork 40 are pivotally arranged by means of a pin 41 between the prongs of fork 39. The longitudinal centre ~',.'', :'' . ~ ..
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line c of the pin 41, which affords the pivotal joint bet~/een the -two portion~ 33 and 389 crosses the longitudinal centre line ' d of the pin 30 at least substantially at right angles. rrhe portion i 33 of the ar~ 32 arranged on the supporting ring 26 is straight and the portion 38 is kinked near the centre so that -the longitu-dinal centre lines of the resultant -two portions are at an obtuse angle to each other on -the top side. At ~he end remote from the fork 40 the por-tion 38 has a fork 42, the prongs of which are located one above the other. On the distal sides of the prongs tags 43 and 44 bear on said prongs and are arranged on a support -~
45. The tags 43 and 44 are pivotable with respect to the fork 42 by means of a pin 44~. The longitudinal centre line ~ of the pin 44A extends upwardly. The topmost -tag 44 is longer than the lower tag 43 and is provided with a pin 46, which is displaceable 15 in its direction of length against spring force. ~he pin 46 can be inserted into one of two holes 46A provided in a sector-shaped plate 47 located benea-th the tag 44 and on the top side of the portion 38. ~he suppor-t 45 is made from sheet material and shaped in the form of a bracket, the limbs of the bracket being located one above -the other.
It will be seen from ~igure 5 that -the support 45 is con-nacted with the tags 43 and 44 so that the limbs 48 of the bracket extend rearwardly with respect to the direction of rotation ~
of a rake member 12. Between -the limbs 48 the web of the bracket , 25 is provided on -the side remote from the tags 43 and 44 by means of a bolt 50 with a pair of tines 51, which are formed by a ; single length of resilient material. ~he tines 51 comprise an ac-tive portion 52, which terminates through three coils 53 in a portion 54 located between the coils and secured in place by 30 means of the bolt 50. ~he axis of the coils 53 is at least sub-stantially parallel to the pin 44A. It will be apparent from ~igure 4 that the active portions 52 of the -tines are regularly .
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curved throughout -their length so -that the -tines extend downwards ;,!'~ to their free ends.
~igure 5 shows that the acti~e portions 52 of the tines 51 are curved over a part away from -the coils 53, after which they terminate in a straight portion, which i8 at least sub-. stantially radial ~o the rotary shaft of the rake member 12 in , . . .
the position shown in ~igure 5. ~igure 5 shows furthermore that the active portion 5~ of the tines 51 is located ou-tside the limbs 48 of the support 45 and the longitudinal centre line of the straight portion is at an anglec~ to the longitudinal centre line of the limbs ~8,c~ being larger than 30 and preferably 45 , .. . .
so that the tines can satisfactorily attack the crop. At the end of the portion 33 of the arm 32, holding the fork 39, stops 55 are provided on the top and bottom sides, sa~ stops being in-clined away from their fastening point on the portion and then bent over towards one another to form supporting surfaces at their ends for holding the portion 38 of the a.rm 32 subsequent to its -turn about the pin 41. For driving each of the rake members 12 the lower, tubular beam 9 accommodates a shaft 56, which is .. 20 journalled near the centre of the support in a gear box 57 and is held near -the ends of the beam 9 by bearings (not shown). Each of the ends of the shaft 56 proj~cting into -the gear boxes 10 is provided with a bevel gear wheel 58, which is adapted to co-operate with the toothed rim 24 in the gear box. Inside the gear box 57 located near the centre of the beam 9 the shaft 56 .' is in driving connection by means of a bevel gear wheel trans-mission with a shaft 59, extending in the direction of movement .~ A and projecting from the front side of -the gear box and adapted :.~; to be coupled with the power take-off shaft of a trac-tor with the . 30 aid of an auxiliary shaft Z0.
~he ends of the foremos-t frame beam 4 of the protective part 3 are provided each with a fork 61~ the prongs of which : ` :
, 10 4 2Z~
extend upwardly. The ends of the hindmos-t beam 5 of the protective , part 3 are provided with a fork 62, the prong located on the rear side thereof being provided with a sec-tor-shaped plate 63 ~; (Figure 6). Between the prongs of the forks 61 and 62 connecting 5 beams 64 extend in the direction of movement. With the protective part 3 are furthermore associated two parts 65 having each a brack-et 66. The limbs 67 of the bracket 66 are diverging, whereas the connecting part 68 extends at least substantially in the direction of movementO Between the limbs 67 connecting beams 69 and 69A
extend parallel to the connecting part 68. The ends of the foremost , limbs 67 of the brackets 66 9 viewed in the direction of movement , .
A, are each provided with a fork 70, the prongs of which are -pivotally arranged by means of a pin 71 between the prongs of the forks 61 at the ends of the foremost frame beam 4. The hind-5 ~ moæt limbs~6~ are provided with forks 72, the prongs of which ~, are pivo-tally arranged by means of a pin 73 to the prongs of the forks 62 of the hindmost frame beam 5. ~he longitudinal centre I ~3 lines of -the pins 71 and~ are in line with each other and extend ~¦ in the direction of movement and they constitute a pivotal axis for -the parts 65. ~he hindmost prong of the fork 72 bears on the plate 63 and is provided with a spring-controlled pin 74, which ~¦ is displaceable in its direction of length and can be inserted in-to a hole in the limb and into one of two holes 75 in the plate 63 (Figure 6). With the aid of the pin 74 and the holes 75 25 -the part 65 can be tilted down into the position indicated by broken lines in Fig. 2. ~he shafts 11 project on the top side .. ! . . .
z over a given distance from the gear boxes 10 and are surrounded `( at this place by a sleeve 76, which is held in place by means of a safety pin 77. ~he sleeve 76 is provided on the rear side, 3 viewed in the direction of movement A, with tags 78 (Figure 3).
To the tags 78 are pivoted the prongs of a fork 80 by means of a pin 79, which extends at least substantially in a horizontal ' ~:
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direction and which crosses -the rotary axis of a rake member 12 at least substantially a-t right angles. The fork 80 is secured to an arm 81, which extends rearwardly and which is provided with a guide member 82. The arm 81 can be fastened at two places by ~ 5 means of a flexible connecting member 83 and ears 84 -to the ;; hindmost frame beam 5 so that i-t can be moved into two positions by turning about an axis coinciding wi-th the rotary axis of a ; rake member. The guide member 82 comprises a support 85. The support 85 has an upright portion 86 in operation, to which a plurality of parallel resilient bars 87 are secured. The pa~t 86 terminates in a part ~8 at right angles to the former, which can stand on the ground in operation, which part is at least -: substantially parallel to the bars 87. The length of the part 88 is at least substantially equal to the length of the bars 87.
The support ~5 is adapted -to pivo-t about a pin 89, which extends in the direction of length of the arm 81. The arm 81 is provided with an upright, sector-shaped plate 90, which is at least substan-tially normal to the pin 89~ The support 85 is provided with a strip 91 having a hole for passing a pin 92. The pin 92 may also ,~ 20 be passed through one of two holes 93 in the plate 90 so thata guide member can be moved by turning about the pin 89 from the working position into -the transport position ~hown in ~igure 8.
In this position the guide member 82 extends at least sub- -stantially in a horizontal direction.
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` 25 At the front, near the centre of the foremost frame b~am 4 a trestle 94 is provided for the attachment to the three-point lifting device of a tractor. The top side of the trestle ; 94 is secured on the rear side by means of a supporting beam 95 to the frame beam 1.
3 The hay-making machine depicted in the foregoing operates as follows:
In operation the implement is connected by means of the trestle .: .
.;
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94 with the three-point li~ting device of the tractor and the shaft 59 projecting from -the front side of the gear box 57 is linked by means of the auxiliary shaft 60 to the power take-off shaft of the tractor so that from the power take-off shaft and via the transmission described above the rake members 12 can be rotated about the upright portions 12A of the shafts 11 in the dir-ection indicated by the arrow ~ in Figure 1. When the rake mernbers 12 are set rotating, the arms 32 provided at the ends with -the bracket-shaped support 45 for the tines 51, swing about the up-~; 10 right longitudinal centre line a of the pin 30 into an at least substantially radial position sho~m in Fig. 1 under the actioh of centrifugal force. In this position the arms 32 are capable ~ of pivoting freely in at laast one direction about the pin 30.
; Against a pivotal movement directed to the rear, viewed in the , direction of rotation, a stop 37 is provided, which is adapted to co-operate with the extension 36 on the sleeve 31. In this way in operation the arms 32 are prevented from swinging too far to the rear, when encountering heavy crop, which would be harmful ~-to -the raki~g effect. If desired, the stop 37 may be displaced ;~ 20 in -the longitudinal direction to put it out of the reach of the extension 36. In operation the lower limb 48 of the support 45 for the tines 51, which limb is at leas-t substantially parallel ;~ to a tine, moves along the ground, whilst the portion 38 of an arm 32 can turn about the longitudinal centre line c of the pin 41 crossing the rotary axis o~ the rake member at right angles with respect to the portion 33 of the arm 32 coupled with the central part so that a satisfactory matching of the ground is ensured. ~he part of the portion 38 holding the suppor-t 45 then extends at least substantially in a horizontal direc-tion (see Figure 4). When the support 45 for the tines 51 occupies the position shown in the Figures relatively to the arm 32, the active portions 52 of the tines 51 extend at least substantially in a , .
: _ 9 _ . .
radial direc-tion and the implement can -then be employed for tedding~ the crop displaced by the -tines being moved between the rake members to the rear and spread. If it i8 desired to form -~ swaths with the aid of the guide members 82, the position oY
the tines 51 can be varied. ~he support 45 can be moved, subsequen-t ; to the setting of the pin 46, by turning about the longi-tudinal centre line d of the pin ~4A, into a position in which the tines are in a sligh-tly dragging position with respect to the direction of rotation B. In order to form a swath the guide members 82 are as near as possible to one another. The position shown in Figure 1 may be employed for spreading crop. ~he protective part 3 provides in operation a satisfactory protection against the high-speed rake members 12.~ ~ means of -the ground wheel arranged beneath each rake member the rake members can satisfactorily match the condltions of the ground so that in conaunction with the individual adaptability of the tine supports 45 an ideal run ; of the implement is ensured. In order to prevent in operation the suppor-t 45 of -the -tines and the portion 38 of the arm 32, to which the tine support is secured,from turning to an excessive extent, the stops 55 are provided for limiting the upward and downward turns of the portion 38. Moreover, the lower stop 55 prevents the portions 38 from tilting completely downwardsj when the im-plement is changed over to the transpor-t position.
For moving the implement into a transport position, it can be lifted by means of the three-point lifting device, the arms 32 for the tines being then capable of turning about the . .~
; pins 30 into the position shown in the Figures. ~hen the tiltable end parts 65 of the protective part 3 can be tilted downwards and locked in this position by means of the locking mechanisms 3o on the rear side comprising the spring-controlled pins~ ~ . In this position the parts 65 prevent, in transpor-t, the tined arms 32 from swinging outwardly. When -the implement is discoupled, it i' .
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According to the present invention there is provided a hay making machine comprising frame means and a~ least one rake member mounted for rotation about an upwardly extending axis on a shaft supported on said frame means, said rake member comprising a hub on said shaft and arms connected to said hub, tines mounted on the outer portions of said arms and said tines ;~ 10 each being freely pivotable relative to said hub through at least two spaced-apart pivot connections that connect the tines to the hub, said arms and tines being movable to outwardly directed operative working positions by ~; centrifugal forces during the operative rotation of said rake member.
For a better understanding of the invention and to show how the same 9 . may be carried into effect, reference is made by way of example to the accompanying drawings. 1 ~ Figure 1 is a plan view of a hay-making machine embodying the ', invention.
,' Figure 2 is a side elevation of the device shown in Figure 1. `~ -~
', 20 Figure 3 is an enlarged sectional view of the central part of a ;;
`'1 rake member.
;~ Figure 4 shown on an enlarged scale the connection of a support for `
,` the tines with the arm of the rake member. -~
.... .... ...
~, Figure 5 is an elevation in the direction of the arrow V in `;1 Figure 4.
'`' 1 , -'! Figure 6 is an enlarged elevation in the direction of the arrow Vl :~ in Figure 2.
1 Figure 7 is an enlarged elevation taken on the line VII-VII in "`i Figure 1. `' `~ 30 Figure 8 is a plan view of a hay-making machine embodying the invention in the transport position.
Figure 9 illustrates a second possibility of fastening an : .
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; arm of the rake member to the central part of said rake member.
, Figure 10 shows a tine support having four tines.
Figure 11 illustrates a third possibility of fastening an arm to -the central part of the rake member.
,. Figure 12 is a plan view of a second embodiment of a hay-making machine in accordance with the invention.
Figure 13 is a side elevation of the machine shown in Figure 12.
, Pigure 14 is an enlarged sectional view taken on the line XIV-XIV
in Figure 13.
' 10 Figure 15 illustrates on an enlarged scale the connection of an arm with the central part of the rake member and the connection of a tine ' support. :
Figure 16 is a plan view in the direction of the arrow XVI in Figure 15. ~-Figure 17 is a sectional view taken on the line XVII-XVII in 1 Figure 15. -:~ Figure 18 is an enlarged sectional plan view taken on the line h XVIII-XVIII in Figure 15.
, Figure 19 is a side elevation of the machine shown in Figure 12 ., ~ .
: 20 in the transport position.
Figure 20 is a side elevation of a working position of another -embodiment, in which the tine supports are pivotable relative to the arms.
Figure 21 illustrates on an enlarged scale the pivotal connection of a tine support.
Figure 22 is a side elevation of the device shown in Figure 20, the device bearing on the tine supports.
The construction shown in Figures 1 to 8 is that of a hay-making machine comprising a frame having an at least substantially horizontal frame ,~
beam 1, extending transversely of the direction of movement A of the device.
The frame 1 is tubular and preferably has a circular cross-section. The ends of the frame beam 1 are secured by means of connecting beams 2 extending in the direction of movement A to a foremost frame beam 4 of a protective ' .~
.~ .
.
1()4~2~1L8 . ~ , part 3. The frame beam 1 is connected with a frame beam 5 of the protective . part 3 by means of connecting beams 6, which are in line with the connecting . beams 2, viewed in plan (see Figure 1). The beams 4 and 5 of the protective ` part 3 are located slightly above the frame beam 1. Near the ends of the frame beam 1 within the connecting beams 2 struts 7 are arranged on the frame ~ beam 90 that, viewed in plan, they are converging and are secured to the --~ foremost beam 4. To the ends of the frame beam 1 are secured vertical plates s~
.~ 8, extending in downward direction. Between the lower ends of the plates 8 ~::
.. .. . . ..
, a tubular frame beam 9 extends parallel to the frame beam 1. The ends of ~ 10 the frame beam 1 are provided with gear boxes 10 in each of which a down-:; wardly extending shaft 11 is fastened. Each shaft 11 has a straight portion ~l 12A extending from its fastening point in the gear box 10 and terminating in :
~ a bracket-shaped portion 13, the limbs of which are at least substantially .:~ horizontal (Figure 3), the lower limb 14 forming a rotary shaft for a .
'' rotatable supporting member formed by a ground wheel 15. A rake member 12 .:
., is rotatably arranged on each shaft 11. For this purpose a support 16 , holding a bearing 17 is fastened at a given distance about the bracket-shaped ~ . .
. ~ .
'; portion 13 to the straight portion 12A of the shaft 11. The portion 12A ~ :-" . . ~ .: :
is furthermore surrounded by a sleeve 18 bearing on the bearing 17, the top ; ~:~
end of said sleeve holding a second bearing 19. The portion 12A is surround- '~
: ed between the bearing 19 and the gear box 10 by a sleeve 20. By means of ::,:
the bearings 17 and 19 a sleeve 21 is rotatably arranged and this sleeve is .
; provided at its top end with a ring 22 extending at least substantially at ,.
,;:
right angles to the longitudinal centre line of the portion 12A, said ring .. having fastened to it by bolts 23 a toothed rim 24. Near the lower end the :
`~. sleeve is provided with a ring 25 joining the circumference of the sleeve ` :~
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.: and having secured to it by means of bolts 25A a supporting ring 26, ,~
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(Figure 3). The sleeve 21 and the supporting ring 26 constitute a central part of a rake member 12. By means of the bolts 25A eight tags 27 are . 30 secured to the lower side of the supporting ring 26 at equal distances from ~:
' one another. The tags 27 comprise a straight portion 28 inclined downwardly ~ :
: away from the fastening area of the bolts 25A and terminating in a portion 29 ` . ~- .
i '''", . , ,: ~ ~3~ ' ~
parallel to the supporting ring 26. Between the supporting ring 26 and the portion 29 of a tag 27 a sleeve 31 is arranged by means of a pin 39 so as to be freely rotatable. The longitudinal centre line a of the pin 30 is parallel to the portion 12A, the longitudinal centre line of which _ con-stitutes the rotary axis of the rake member. The sleeve 31 is fastened to a tubular arm 32. The pin 30 is held by a head on the supporting ring 26 and is secured in place at its lower end by means of a locking pin 34.
Between the supporting ring 26 and the ring 22 supports 35 are arranged at equal distances from one another. The supports 35 extend away from the ~ -ring 22 in a downwardly inclined direction. The sleeve 31 is provided with an inwardly projecting extension 36, which is adapted to bear on a pin forming a stop 37 passed through a hole in the supporting ring 26 and adapted to be displaced against spring force in its axial direction so that the lower end of the pin can be moved out of the reach of the extension 36, :-in which position the pin can be secured against rotation.
As will be apparent from Figures 2 and 4 the arm 32 has two ~`
portions 33 and 38, provided at their proximal ends with a fork 39 and 40 respectively, the prongs of which extend upwardly. The prongs of the fork 40 are pivotally arranged by means of a pin 41 between the prongs of fork 39. The longitudinal centre ~',.'', :'' . ~ ..
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line c of the pin 41, which affords the pivotal joint bet~/een the -two portion~ 33 and 389 crosses the longitudinal centre line ' d of the pin 30 at least substantially at right angles. rrhe portion i 33 of the ar~ 32 arranged on the supporting ring 26 is straight and the portion 38 is kinked near the centre so that -the longitu-dinal centre lines of the resultant -two portions are at an obtuse angle to each other on -the top side. At ~he end remote from the fork 40 the por-tion 38 has a fork 42, the prongs of which are located one above the other. On the distal sides of the prongs tags 43 and 44 bear on said prongs and are arranged on a support -~
45. The tags 43 and 44 are pivotable with respect to the fork 42 by means of a pin 44~. The longitudinal centre line ~ of the pin 44A extends upwardly. The topmost -tag 44 is longer than the lower tag 43 and is provided with a pin 46, which is displaceable 15 in its direction of length against spring force. ~he pin 46 can be inserted into one of two holes 46A provided in a sector-shaped plate 47 located benea-th the tag 44 and on the top side of the portion 38. ~he suppor-t 45 is made from sheet material and shaped in the form of a bracket, the limbs of the bracket being located one above -the other.
It will be seen from ~igure 5 that -the support 45 is con-nacted with the tags 43 and 44 so that the limbs 48 of the bracket extend rearwardly with respect to the direction of rotation ~
of a rake member 12. Between -the limbs 48 the web of the bracket , 25 is provided on -the side remote from the tags 43 and 44 by means of a bolt 50 with a pair of tines 51, which are formed by a ; single length of resilient material. ~he tines 51 comprise an ac-tive portion 52, which terminates through three coils 53 in a portion 54 located between the coils and secured in place by 30 means of the bolt 50. ~he axis of the coils 53 is at least sub-stantially parallel to the pin 44A. It will be apparent from ~igure 4 that the active portions 52 of the -tines are regularly .
~04~
curved throughout -their length so -that the -tines extend downwards ;,!'~ to their free ends.
~igure 5 shows that the acti~e portions 52 of the tines 51 are curved over a part away from -the coils 53, after which they terminate in a straight portion, which i8 at least sub-. stantially radial ~o the rotary shaft of the rake member 12 in , . . .
the position shown in ~igure 5. ~igure 5 shows furthermore that the active portion 5~ of the tines 51 is located ou-tside the limbs 48 of the support 45 and the longitudinal centre line of the straight portion is at an anglec~ to the longitudinal centre line of the limbs ~8,c~ being larger than 30 and preferably 45 , .. . .
so that the tines can satisfactorily attack the crop. At the end of the portion 33 of the arm 32, holding the fork 39, stops 55 are provided on the top and bottom sides, sa~ stops being in-clined away from their fastening point on the portion and then bent over towards one another to form supporting surfaces at their ends for holding the portion 38 of the a.rm 32 subsequent to its -turn about the pin 41. For driving each of the rake members 12 the lower, tubular beam 9 accommodates a shaft 56, which is .. 20 journalled near the centre of the support in a gear box 57 and is held near -the ends of the beam 9 by bearings (not shown). Each of the ends of the shaft 56 proj~cting into -the gear boxes 10 is provided with a bevel gear wheel 58, which is adapted to co-operate with the toothed rim 24 in the gear box. Inside the gear box 57 located near the centre of the beam 9 the shaft 56 .' is in driving connection by means of a bevel gear wheel trans-mission with a shaft 59, extending in the direction of movement .~ A and projecting from the front side of -the gear box and adapted :.~; to be coupled with the power take-off shaft of a trac-tor with the . 30 aid of an auxiliary shaft Z0.
~he ends of the foremos-t frame beam 4 of the protective part 3 are provided each with a fork 61~ the prongs of which : ` :
, 10 4 2Z~
extend upwardly. The ends of the hindmos-t beam 5 of the protective , part 3 are provided with a fork 62, the prong located on the rear side thereof being provided with a sec-tor-shaped plate 63 ~; (Figure 6). Between the prongs of the forks 61 and 62 connecting 5 beams 64 extend in the direction of movement. With the protective part 3 are furthermore associated two parts 65 having each a brack-et 66. The limbs 67 of the bracket 66 are diverging, whereas the connecting part 68 extends at least substantially in the direction of movementO Between the limbs 67 connecting beams 69 and 69A
extend parallel to the connecting part 68. The ends of the foremost , limbs 67 of the brackets 66 9 viewed in the direction of movement , .
A, are each provided with a fork 70, the prongs of which are -pivotally arranged by means of a pin 71 between the prongs of the forks 61 at the ends of the foremost frame beam 4. The hind-5 ~ moæt limbs~6~ are provided with forks 72, the prongs of which ~, are pivo-tally arranged by means of a pin 73 to the prongs of the forks 62 of the hindmost frame beam 5. ~he longitudinal centre I ~3 lines of -the pins 71 and~ are in line with each other and extend ~¦ in the direction of movement and they constitute a pivotal axis for -the parts 65. ~he hindmost prong of the fork 72 bears on the plate 63 and is provided with a spring-controlled pin 74, which ~¦ is displaceable in its direction of length and can be inserted in-to a hole in the limb and into one of two holes 75 in the plate 63 (Figure 6). With the aid of the pin 74 and the holes 75 25 -the part 65 can be tilted down into the position indicated by broken lines in Fig. 2. ~he shafts 11 project on the top side .. ! . . .
z over a given distance from the gear boxes 10 and are surrounded `( at this place by a sleeve 76, which is held in place by means of a safety pin 77. ~he sleeve 76 is provided on the rear side, 3 viewed in the direction of movement A, with tags 78 (Figure 3).
To the tags 78 are pivoted the prongs of a fork 80 by means of a pin 79, which extends at least substantially in a horizontal ' ~:
4~
direction and which crosses -the rotary axis of a rake member 12 at least substantially a-t right angles. The fork 80 is secured to an arm 81, which extends rearwardly and which is provided with a guide member 82. The arm 81 can be fastened at two places by ~ 5 means of a flexible connecting member 83 and ears 84 -to the ;; hindmost frame beam 5 so that i-t can be moved into two positions by turning about an axis coinciding wi-th the rotary axis of a ; rake member. The guide member 82 comprises a support 85. The support 85 has an upright portion 86 in operation, to which a plurality of parallel resilient bars 87 are secured. The pa~t 86 terminates in a part ~8 at right angles to the former, which can stand on the ground in operation, which part is at least -: substantially parallel to the bars 87. The length of the part 88 is at least substantially equal to the length of the bars 87.
The support ~5 is adapted -to pivo-t about a pin 89, which extends in the direction of length of the arm 81. The arm 81 is provided with an upright, sector-shaped plate 90, which is at least substan-tially normal to the pin 89~ The support 85 is provided with a strip 91 having a hole for passing a pin 92. The pin 92 may also ,~ 20 be passed through one of two holes 93 in the plate 90 so thata guide member can be moved by turning about the pin 89 from the working position into -the transport position ~hown in ~igure 8.
In this position the guide member 82 extends at least sub- -stantially in a horizontal direction.
,..
` 25 At the front, near the centre of the foremost frame b~am 4 a trestle 94 is provided for the attachment to the three-point lifting device of a tractor. The top side of the trestle ; 94 is secured on the rear side by means of a supporting beam 95 to the frame beam 1.
3 The hay-making machine depicted in the foregoing operates as follows:
In operation the implement is connected by means of the trestle .: .
.;
. ,. .. .,~ .
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94 with the three-point li~ting device of the tractor and the shaft 59 projecting from -the front side of the gear box 57 is linked by means of the auxiliary shaft 60 to the power take-off shaft of the tractor so that from the power take-off shaft and via the transmission described above the rake members 12 can be rotated about the upright portions 12A of the shafts 11 in the dir-ection indicated by the arrow ~ in Figure 1. When the rake mernbers 12 are set rotating, the arms 32 provided at the ends with -the bracket-shaped support 45 for the tines 51, swing about the up-~; 10 right longitudinal centre line a of the pin 30 into an at least substantially radial position sho~m in Fig. 1 under the actioh of centrifugal force. In this position the arms 32 are capable ~ of pivoting freely in at laast one direction about the pin 30.
; Against a pivotal movement directed to the rear, viewed in the , direction of rotation, a stop 37 is provided, which is adapted to co-operate with the extension 36 on the sleeve 31. In this way in operation the arms 32 are prevented from swinging too far to the rear, when encountering heavy crop, which would be harmful ~-to -the raki~g effect. If desired, the stop 37 may be displaced ;~ 20 in -the longitudinal direction to put it out of the reach of the extension 36. In operation the lower limb 48 of the support 45 for the tines 51, which limb is at leas-t substantially parallel ;~ to a tine, moves along the ground, whilst the portion 38 of an arm 32 can turn about the longitudinal centre line c of the pin 41 crossing the rotary axis o~ the rake member at right angles with respect to the portion 33 of the arm 32 coupled with the central part so that a satisfactory matching of the ground is ensured. ~he part of the portion 38 holding the suppor-t 45 then extends at least substantially in a horizontal direc-tion (see Figure 4). When the support 45 for the tines 51 occupies the position shown in the Figures relatively to the arm 32, the active portions 52 of the tines 51 extend at least substantially in a , .
: _ 9 _ . .
radial direc-tion and the implement can -then be employed for tedding~ the crop displaced by the -tines being moved between the rake members to the rear and spread. If it i8 desired to form -~ swaths with the aid of the guide members 82, the position oY
the tines 51 can be varied. ~he support 45 can be moved, subsequen-t ; to the setting of the pin 46, by turning about the longi-tudinal centre line d of the pin ~4A, into a position in which the tines are in a sligh-tly dragging position with respect to the direction of rotation B. In order to form a swath the guide members 82 are as near as possible to one another. The position shown in Figure 1 may be employed for spreading crop. ~he protective part 3 provides in operation a satisfactory protection against the high-speed rake members 12.~ ~ means of -the ground wheel arranged beneath each rake member the rake members can satisfactorily match the condltions of the ground so that in conaunction with the individual adaptability of the tine supports 45 an ideal run ; of the implement is ensured. In order to prevent in operation the suppor-t 45 of -the -tines and the portion 38 of the arm 32, to which the tine support is secured,from turning to an excessive extent, the stops 55 are provided for limiting the upward and downward turns of the portion 38. Moreover, the lower stop 55 prevents the portions 38 from tilting completely downwardsj when the im-plement is changed over to the transpor-t position.
For moving the implement into a transport position, it can be lifted by means of the three-point lifting device, the arms 32 for the tines being then capable of turning about the . .~
; pins 30 into the position shown in the Figures. ~hen the tiltable end parts 65 of the protective part 3 can be tilted downwards and locked in this position by means of the locking mechanisms 3o on the rear side comprising the spring-controlled pins~ ~ . In this position the parts 65 prevent, in transpor-t, the tined arms 32 from swinging outwardly. When -the implement is discoupled, it i' .
2~18 can bear on the tilted-down portions of -the protecti~e part.
As stated above, a -tine or a group of tines 7 in operation, ~ ~ is capable not only of turning about~ sh~t a, which is a-t least `~ substantially parallel to the rotary axis b of te rake member 12, but also of turning about an axis c, which crosses the rotary ; axis of the rake member at least in this emhodiment substantially at right angles. ~y means of the pivotal joint of an arm 32 and the cen-tral part of the rake member cornprising the axis a a tine can be readily moved by centrif`ugal force into a working position.
When af-ter lifting the implement the drive of the rake members is disengaged, the tines can turn under the action of their own ; weight about the axes a into the transport position.
; The implement of simple construction described above ensures a very effective operation, whilst the individual adap-;, 15 tability of the tines ensures clean work.
~ igure 9 shows an embodiment in which the supporting ring 26 is nearer the gear box 10. The shaft portion 12A may ;'l therefore be shorter and the bracket 13 may be larger so that a larger ground wheel ~* may be arranged beneath the rake member.
~igure 10 shows an embodiment in which the support~
for the -tines is larger and two pairs of integral tines 98 are arranged by bolts 99 between the limbs 97.
~igure 11 shows an embodiment in which an arm 32 for the ; tines i~ coupled by means of a shaft 100 with the central part ; 25 of the rake member, said shaft 100 crossing the rotary axis b of a rake member 12, viewed in a radial direction. It can thus be ensured that in operation an arm 32 readily deflects from an unevenness of the ground, when the stop 37 is removed.
~he implement shown in ~igs. 12 to 19 comprises a tubular frame beam 1 01, extending -transversely o~ -the direction of movement A and connected near the centre with an upwardly inclined frame beam 102, the front end of which is secured to .. ~ ;
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a tres-tle 103 for the attachment to -the three-point li-frt of a tractor. ~he front end of -the beam 102, which~inclined to the right, viewed on plan/with respect to the direction of movement, away from its fastening area on the frame beam 101, is secured :.:, to -the top side of -the three-point lift. Between the trestle 103 and the frame beam 102 a stru-t 104 is provided. The ends of the frame beam~e~ are provided by means oE vertical plates 105 wi-th gear boxes 106. '~he beam ,~e~ and the gear boxes accommodate like in the preceding embodiment a drive for rake members 107, . ., which are adapted to rotate about the shafts 108 arranged in the gear boxes 106. ~ha shafts 108 are fastened in the gear boxes in the same manner as the shafts 11 and the rake members 107 are adapted to rotate about the shafts 108 by means of a similar ;l central part. ~he longitudinal axes of the shafts 108 constitute ~ 15 the rotary axis of the rake member. The right-hand gear box 106, ;~1 viewed in -the direction of movement, comprises in this embodiment a bearing for a shaft 109, extending in the direction of movement A and adapted tp co-operate by means of a bevel gear wheel (not shown) with a toothed rim 24 of the drive of a rake member 107, said shaft being adapted to be coupled by means of an auxiliary shaft 110 with the power take-off shaft of -the tractor. In -this embodiment the bottom side of the supporting ring 26 associa-ted with the central part of the rake member is provided a-t equal intervals with pairs of tags 111 (Figure 15~. Between the tags 111 an arm 113 for tines 114 and 114A is arranged by means of a shaft 112, the longitudinal centre line e of which crosses -the rotary axis of the rake member a-t right angles and extends in ' a tangential direction. Each arm 113 comprises two portions 115 ;l and 116, which are at an angle to each other. ~he shorter portion115 is located on the side of the pivotal joint with the central part, whereas the longer portion 116 is provided at a given distance from the free end with a support 117 for the tines 114 - 12 _ ~ 104~Z1~3 and 114A. The support 117 is arranged on the lower side of the portion 116 ;, and comprises a straight portion 118, extending downwards away from its fastening point and terminating in a bent-over portion 119, which is parallel to the portion 116 of the arm 113 and has a length corresponding with the ."
; length of the portion 120 of the portion 116 located between the free end and , the fastening point of the support ~Figure 15).
From Figure 16 it will be apparent that the two portions 119 and 120 are bent over so that with respect to the direction of rotation B of '- .
;~ the rake member they extend to the rear. The portion 118 of the support 117 , . .. ..
is provided with a flange 121, which is secured in place by means of a pin 122 with respect to the support. Beneath the flange 121 and at a distance therefrom a supporting ring 122A is provided and held in place by means of a pin 123. Between the flange 121 and the supporting ring 122A are enclosed coils 124 surrounding the portion 118 and being associated with two integral tines 114 and 114A, whilst a connecting part 125 located between the coils ~
124 projects to one side. The part 125 is located in an opening 126 in a ~ .
locking plate 127, which is adapted to pivot about a shaft 128 with respect to the flange 121. The longitudinal centre line of the pin 128 crosses the '~
;~ longitudinal centre line of the portion 118 at least substantially at right ':
angles. The flange 121 is provided with two sleeve-like supports 129 arranged at a distance from each other and having a spring 130 arranged .: ,;; ~ ., . .: . .
between them which surrounds the shaft 128 passed through the supports 129. ,'~ ~ ~
The spring 130 bears at one end on the locking plate 127 and by the other end - -on the flange 121 so that the locking plate 127 is held in the position shown in Figures 15 to 17. By means of the locking plate 127, which has a second opening 131 (see Figure 17) tha position of the tines 114 and :' ,! ' 114A can be changed by turning the tines about an axis which coincides with the longitudinal centre line of the straight portion 118 of the support ,' 117.
It will be seen from Figure 17 that the opening 131 is wider than .`
the opening 126 because the projecting part 125, when inserted, occupies a slightly inclined position in said opening. The tines 114 and 114A comprise, ` ~ -13-``` ' ~9L~Z~
viewed on plan (Pigure 16) a straight, active portion, which is bent down along a given curve, viewed from aside. The curve of the lower tine 114A
'~` is sharper than that of the upper tine 114 ~see Figure 15). Near the lower , side a shaft 108 of a rake member 107 is kinked over a portion 132 so that an :, angle ~ of at least 15 is formed between the longitudinal centre lines of .~ the kinked portion and the further portion of said shaft. A housing 134 , .,~ . .
is arranged by means of bearings 133 around the kinked portion 132, said housing being secured on the bottom side to the inner side of a dish 135.
The top side of the dish 135 is covered by a part 136, which is the mirror image of the dish 135 and joins the top side of the housing 134. In opera-~ : ...tion the rake members can be driven by means of the drive described above ~ ..
~ via the auxiliary shaft 110 by the power-take-off shaft of the tractor in ~
:. ~
the direction of the arrows B and under the action of centrifugal force the .
arms 113 turn about the shafts 112 and move the tines 114 and 114A to the ; working position shown in Figure 13. Then each rake member 107 bears on ~;
the ground by means of its supporting member formed by the rotatable dish 135 and the arms 113 for the tines 114 are in a position such that the . .. ~
portions 116, to which the supports 117 for the tines 114 and 114A are .. .
secured, extend at least substantially in a horizontal direction. In operation the bent-over portions of the supports 117 slide along the ground . . .
over part of a revolution of a rake member and ensure an effective matching of the ground for the tines 114 and 114A by turning about the axis e, which , crosses the rotary axis of the rake member 107 at right angles. The lower ; tine having the more strongly curved active portion picks up the crop quite : ~ .
satisfactorily, particularly if the crop tends to stick.
; Like in the preceding embodiment the position of the tines 114 . ~
and 114A can be adapted to the work to be effected. In the position of the tines shown in Figures 12 and 16, for example, the implement can be employed for tedding the crop, the crop being thrown to the rear between the rake :,. .
~i 30 members, where it is spread. When the tines are set in the position shownin broken lines by means of the locking plate 127, the projecting part between the coils being then located in the opening 131 of the locking plate ; ", ~ -14-: :`
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:~ 127, the tines are in dragging positions and suitable for the formation i of a swath. For transporting the implement, it can be lifted by means of the ;~ three-point lift of the tractor and when the rotation of the rake members -~ stops the arms will turn about the shafts 112 into the position shown in -~ Figure l9. Thus the tines 114 are located on the inner side of the arms 113 .~ , - .
~ and since the arms are kinked in the manner described above, the parts 116 ,: .: , ~; to which the supports 117 for the tines are secured, extend at least sub-... ~ , , stantially in a vertical direction. In this way an ideal transportability - is obtained. In order to put the implement again into operation, the rake .- 10 members 107 being in the lifted position can be caused to rotate until the . .: .
~; arms 113 holding the tines rotate about the shafts 112 into a radial or ~
! ' ., - substantially radial position. Subsequently the implement can be lowered ;
~; into the working position shown in Figure 13. `- -In the embodiment shown in Figures 20 to 22 the tined portion 137 , . .. .
;~ of an arm 113 is shorter and by means of a shaft crossing the rotary axis of a rake member 107 and extending parallel to a shaft 112 pivoting an arm `
113 to the central part, a tine support 138 is secured to the arm 113. In .. . . ...
~ this embodiment a support 138 comprises an upper portion 139, which is ii.~. .:
~ bent over at right angles with respect to the portion 140 provided with the ~
:: : , ,j 20 tlnes and extends at least substantially parallel to and opposite the dragging portion 141, which slides along the ground in operation. The :~ portion 137 of an arm 113 is arranged by means of a pin 141 between two tags .
.,. ,. ~ .
. 142 secured to the portion 139. The tags 142 are inclined downwardly away from their fastening points and are proportioned so that the portion 139 of the support 138, when being in line with the portion 137, bears on the end of the latter portion. In this way a stop is formed to prevent, in operation, !~ an excessive upward turn of a tine support 138 with respect to an arm 113.
, .. ..
, When the implement is moved into the transport position, the arms and the .
. . .
` tine supports 138 turn in the manner illustrated in Figure 22, so that, ~;~
when the implement is lowered, it arrives at a position in which it can ..
bear on the supports 138 without a risk of damage of the tines. This facilitates storing of the implement in a position from which it can be 15- `~;
v~
2~3 readily attached again to a tractor. Also this embodiment provides the possibility for the tines by turning about an axis crossing the rotary . ., ~ - .
axis of the rake member under the action of cenkrifugal force during the ' rotation of the rake members to readily attain the working position, whereas when the implement is changed over to the transport position and the rotation of the rake members is stopped, the tines turn about said axes by their own weight so that the implement can be readily transported. In the trans-port position the arms 113 provide a protection against contact with the tines.
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As stated above, a -tine or a group of tines 7 in operation, ~ ~ is capable not only of turning about~ sh~t a, which is a-t least `~ substantially parallel to the rotary axis b of te rake member 12, but also of turning about an axis c, which crosses the rotary ; axis of the rake member at least in this emhodiment substantially at right angles. ~y means of the pivotal joint of an arm 32 and the cen-tral part of the rake member cornprising the axis a a tine can be readily moved by centrif`ugal force into a working position.
When af-ter lifting the implement the drive of the rake members is disengaged, the tines can turn under the action of their own ; weight about the axes a into the transport position.
; The implement of simple construction described above ensures a very effective operation, whilst the individual adap-;, 15 tability of the tines ensures clean work.
~ igure 9 shows an embodiment in which the supporting ring 26 is nearer the gear box 10. The shaft portion 12A may ;'l therefore be shorter and the bracket 13 may be larger so that a larger ground wheel ~* may be arranged beneath the rake member.
~igure 10 shows an embodiment in which the support~
for the -tines is larger and two pairs of integral tines 98 are arranged by bolts 99 between the limbs 97.
~igure 11 shows an embodiment in which an arm 32 for the ; tines i~ coupled by means of a shaft 100 with the central part ; 25 of the rake member, said shaft 100 crossing the rotary axis b of a rake member 12, viewed in a radial direction. It can thus be ensured that in operation an arm 32 readily deflects from an unevenness of the ground, when the stop 37 is removed.
~he implement shown in ~igs. 12 to 19 comprises a tubular frame beam 1 01, extending -transversely o~ -the direction of movement A and connected near the centre with an upwardly inclined frame beam 102, the front end of which is secured to .. ~ ;
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a tres-tle 103 for the attachment to -the three-point li-frt of a tractor. ~he front end of -the beam 102, which~inclined to the right, viewed on plan/with respect to the direction of movement, away from its fastening area on the frame beam 101, is secured :.:, to -the top side of -the three-point lift. Between the trestle 103 and the frame beam 102 a stru-t 104 is provided. The ends of the frame beam~e~ are provided by means oE vertical plates 105 wi-th gear boxes 106. '~he beam ,~e~ and the gear boxes accommodate like in the preceding embodiment a drive for rake members 107, . ., which are adapted to rotate about the shafts 108 arranged in the gear boxes 106. ~ha shafts 108 are fastened in the gear boxes in the same manner as the shafts 11 and the rake members 107 are adapted to rotate about the shafts 108 by means of a similar ;l central part. ~he longitudinal axes of the shafts 108 constitute ~ 15 the rotary axis of the rake member. The right-hand gear box 106, ;~1 viewed in -the direction of movement, comprises in this embodiment a bearing for a shaft 109, extending in the direction of movement A and adapted tp co-operate by means of a bevel gear wheel (not shown) with a toothed rim 24 of the drive of a rake member 107, said shaft being adapted to be coupled by means of an auxiliary shaft 110 with the power take-off shaft of -the tractor. In -this embodiment the bottom side of the supporting ring 26 associa-ted with the central part of the rake member is provided a-t equal intervals with pairs of tags 111 (Figure 15~. Between the tags 111 an arm 113 for tines 114 and 114A is arranged by means of a shaft 112, the longitudinal centre line e of which crosses -the rotary axis of the rake member a-t right angles and extends in ' a tangential direction. Each arm 113 comprises two portions 115 ;l and 116, which are at an angle to each other. ~he shorter portion115 is located on the side of the pivotal joint with the central part, whereas the longer portion 116 is provided at a given distance from the free end with a support 117 for the tines 114 - 12 _ ~ 104~Z1~3 and 114A. The support 117 is arranged on the lower side of the portion 116 ;, and comprises a straight portion 118, extending downwards away from its fastening point and terminating in a bent-over portion 119, which is parallel to the portion 116 of the arm 113 and has a length corresponding with the ."
; length of the portion 120 of the portion 116 located between the free end and , the fastening point of the support ~Figure 15).
From Figure 16 it will be apparent that the two portions 119 and 120 are bent over so that with respect to the direction of rotation B of '- .
;~ the rake member they extend to the rear. The portion 118 of the support 117 , . .. ..
is provided with a flange 121, which is secured in place by means of a pin 122 with respect to the support. Beneath the flange 121 and at a distance therefrom a supporting ring 122A is provided and held in place by means of a pin 123. Between the flange 121 and the supporting ring 122A are enclosed coils 124 surrounding the portion 118 and being associated with two integral tines 114 and 114A, whilst a connecting part 125 located between the coils ~
124 projects to one side. The part 125 is located in an opening 126 in a ~ .
locking plate 127, which is adapted to pivot about a shaft 128 with respect to the flange 121. The longitudinal centre line of the pin 128 crosses the '~
;~ longitudinal centre line of the portion 118 at least substantially at right ':
angles. The flange 121 is provided with two sleeve-like supports 129 arranged at a distance from each other and having a spring 130 arranged .: ,;; ~ ., . .: . .
between them which surrounds the shaft 128 passed through the supports 129. ,'~ ~ ~
The spring 130 bears at one end on the locking plate 127 and by the other end - -on the flange 121 so that the locking plate 127 is held in the position shown in Figures 15 to 17. By means of the locking plate 127, which has a second opening 131 (see Figure 17) tha position of the tines 114 and :' ,! ' 114A can be changed by turning the tines about an axis which coincides with the longitudinal centre line of the straight portion 118 of the support ,' 117.
It will be seen from Figure 17 that the opening 131 is wider than .`
the opening 126 because the projecting part 125, when inserted, occupies a slightly inclined position in said opening. The tines 114 and 114A comprise, ` ~ -13-``` ' ~9L~Z~
viewed on plan (Pigure 16) a straight, active portion, which is bent down along a given curve, viewed from aside. The curve of the lower tine 114A
'~` is sharper than that of the upper tine 114 ~see Figure 15). Near the lower , side a shaft 108 of a rake member 107 is kinked over a portion 132 so that an :, angle ~ of at least 15 is formed between the longitudinal centre lines of .~ the kinked portion and the further portion of said shaft. A housing 134 , .,~ . .
is arranged by means of bearings 133 around the kinked portion 132, said housing being secured on the bottom side to the inner side of a dish 135.
The top side of the dish 135 is covered by a part 136, which is the mirror image of the dish 135 and joins the top side of the housing 134. In opera-~ : ...tion the rake members can be driven by means of the drive described above ~ ..
~ via the auxiliary shaft 110 by the power-take-off shaft of the tractor in ~
:. ~
the direction of the arrows B and under the action of centrifugal force the .
arms 113 turn about the shafts 112 and move the tines 114 and 114A to the ; working position shown in Figure 13. Then each rake member 107 bears on ~;
the ground by means of its supporting member formed by the rotatable dish 135 and the arms 113 for the tines 114 are in a position such that the . .. ~
portions 116, to which the supports 117 for the tines 114 and 114A are .. .
secured, extend at least substantially in a horizontal direction. In operation the bent-over portions of the supports 117 slide along the ground . . .
over part of a revolution of a rake member and ensure an effective matching of the ground for the tines 114 and 114A by turning about the axis e, which , crosses the rotary axis of the rake member 107 at right angles. The lower ; tine having the more strongly curved active portion picks up the crop quite : ~ .
satisfactorily, particularly if the crop tends to stick.
; Like in the preceding embodiment the position of the tines 114 . ~
and 114A can be adapted to the work to be effected. In the position of the tines shown in Figures 12 and 16, for example, the implement can be employed for tedding the crop, the crop being thrown to the rear between the rake :,. .
~i 30 members, where it is spread. When the tines are set in the position shownin broken lines by means of the locking plate 127, the projecting part between the coils being then located in the opening 131 of the locking plate ; ", ~ -14-: :`
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:~ 127, the tines are in dragging positions and suitable for the formation i of a swath. For transporting the implement, it can be lifted by means of the ;~ three-point lift of the tractor and when the rotation of the rake members -~ stops the arms will turn about the shafts 112 into the position shown in -~ Figure l9. Thus the tines 114 are located on the inner side of the arms 113 .~ , - .
~ and since the arms are kinked in the manner described above, the parts 116 ,: .: , ~; to which the supports 117 for the tines are secured, extend at least sub-... ~ , , stantially in a vertical direction. In this way an ideal transportability - is obtained. In order to put the implement again into operation, the rake .- 10 members 107 being in the lifted position can be caused to rotate until the . .: .
~; arms 113 holding the tines rotate about the shafts 112 into a radial or ~
! ' ., - substantially radial position. Subsequently the implement can be lowered ;
~; into the working position shown in Figure 13. `- -In the embodiment shown in Figures 20 to 22 the tined portion 137 , . .. .
;~ of an arm 113 is shorter and by means of a shaft crossing the rotary axis of a rake member 107 and extending parallel to a shaft 112 pivoting an arm `
113 to the central part, a tine support 138 is secured to the arm 113. In .. . . ...
~ this embodiment a support 138 comprises an upper portion 139, which is ii.~. .:
~ bent over at right angles with respect to the portion 140 provided with the ~
:: : , ,j 20 tlnes and extends at least substantially parallel to and opposite the dragging portion 141, which slides along the ground in operation. The :~ portion 137 of an arm 113 is arranged by means of a pin 141 between two tags .
.,. ,. ~ .
. 142 secured to the portion 139. The tags 142 are inclined downwardly away from their fastening points and are proportioned so that the portion 139 of the support 138, when being in line with the portion 137, bears on the end of the latter portion. In this way a stop is formed to prevent, in operation, !~ an excessive upward turn of a tine support 138 with respect to an arm 113.
, .. ..
, When the implement is moved into the transport position, the arms and the .
. . .
` tine supports 138 turn in the manner illustrated in Figure 22, so that, ~;~
when the implement is lowered, it arrives at a position in which it can ..
bear on the supports 138 without a risk of damage of the tines. This facilitates storing of the implement in a position from which it can be 15- `~;
v~
2~3 readily attached again to a tractor. Also this embodiment provides the possibility for the tines by turning about an axis crossing the rotary . ., ~ - .
axis of the rake member under the action of cenkrifugal force during the ' rotation of the rake members to readily attain the working position, whereas when the implement is changed over to the transport position and the rotation of the rake members is stopped, the tines turn about said axes by their own weight so that the implement can be readily transported. In the trans-port position the arms 113 provide a protection against contact with the tines.
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Claims (20)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A hay making machine comprising frame means and at least one rake member mounted for rotation about an upwardly extending axis on a shaft supported on said frame means, said rake member comprising a hub on said shaft and arms connected to said hub, tines mounted on the outer portions of said arms and said tines each being freely pivotable relative to said hub through at least two spaced-apart pivot connections that connect the tines to the hub, said arms and tines being movable to outwardly directed operative working positions by centrifugal forces during the operative rotation of said rake member.
2. A hay making machine as claimed in claim 1, wherein said pivot connections extending substantially parallel to one another and at an angle to said shaft.
3. A hay making machine as claimed in claim 1, wherein one of said two pivot connections is located further in a radial direction from said hub than is the other and said one connection has an upwardly extending pivot axis.
4. A hay making machine as claimed in claim 3, wherein said one connection comprises a pivot pin having a longitudinal axis that extends substantially parallel to said shaft.
5. A hay making machine as claimed in claim 1, wherein said tines are pivotable to folded transport positions by their respective weights during non-use.
6. A hay making machine as claimed in claim 1, wherein a first of said two pivot connections is located further in a radial direction from a corres-ponding tine towards said hub than a second connection and said first connec-tion has an axis that is at an angle to said shaft.
7. A hay making machine as claimed in claim 6, wherein said first connection has an axis that extends substantially perpendicular to said shaft.
8. A hay making machine as claimed in claim 6, wherein each of said connections has an axis that extends at an angle to said shaft.
9. A hay making machine as claimed in claim 1, wherein each of said arms is pivoted to said hub and at least a portion of each arm is freely pivotable about one of said connections between stop means.
10. A hay making machine as claimed in claim 2, wherein said pivot connections extend substantially tangentially relative to a circle centered on said shaft when the rake member is viewed in a direction parallel to that shaft.
11. A hay making machine as claimed in claim 2, wherein said two connections are between the tines and their corresponding arms.
12. A hay making machine as claimed in claim 11, wherein each tine is freely pivotable about a pivot connection and said pivot connection is located adjacent said tine.
13. A hay making machine as claimed in claim 2, wherein each arm is connected to said hub by one of said two pivot connections and freely pivot-able about that connection.
14. A hay making machine as claimed in claim 2, wherein each arm comprises stop means and each tine is freely pivotable on a first of said pivot connections through a range limited by stops of said stop means.
15. A hay making machine as claimed in claim 2, wherein each tine is mounted on a support which is adjustably connected to a corresponding arm, said tine being movable through means independently of said pivot connections to at least two different working positions.
16. A hay making machine as claimed in claim 15, wherein the tine is interconnected with said arm by a further pivot connection and movable to working positions on said further connection.
17. A hay making machine as claimed in claim 16, wherein a spring-biased locking member on said support is located to retain said tine in said working positions.
18. A hay making machine as claimed in claim 17, wherein the tines are mounted in groups and said locking member is turnable about said further connection about an axis that extends at an angle to said pivot connections.
19. A hay making machine as claimed in claim 18, wherein said axis extends at right angles to the axes defined by said two pivot connections.
20. A hay making machine as claimed in claim 2, wherein said rake wheel is supported on an inclined dish member that is rotatably mounted on angled shaft means to contact the ground a substantial distance from said shaft means.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA200,054A CA1042218A (en) | 1974-05-16 | 1974-05-16 | Hay-making machines |
| CA245,530A CA1036368A (en) | 1974-05-16 | 1976-02-11 | Hay-making machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA200,054A CA1042218A (en) | 1974-05-16 | 1974-05-16 | Hay-making machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1042218A true CA1042218A (en) | 1978-11-14 |
Family
ID=4100082
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA200,054A Expired CA1042218A (en) | 1974-05-16 | 1974-05-16 | Hay-making machines |
| CA245,530A Expired CA1036368A (en) | 1974-05-16 | 1976-02-11 | Hay-making machines |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA245,530A Expired CA1036368A (en) | 1974-05-16 | 1976-02-11 | Hay-making machines |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA1042218A (en) |
-
1974
- 1974-05-16 CA CA200,054A patent/CA1042218A/en not_active Expired
-
1976
- 1976-02-11 CA CA245,530A patent/CA1036368A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CA1036368A (en) | 1978-08-15 |
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