CA2096045A1 - Rotating pickup bale arm - Google Patents
Rotating pickup bale armInfo
- Publication number
- CA2096045A1 CA2096045A1 CA 2096045 CA2096045A CA2096045A1 CA 2096045 A1 CA2096045 A1 CA 2096045A1 CA 2096045 CA2096045 CA 2096045 CA 2096045 A CA2096045 A CA 2096045A CA 2096045 A1 CA2096045 A1 CA 2096045A1
- Authority
- CA
- Canada
- Prior art keywords
- bale
- clamping
- transport machine
- clamping jaw
- pivotally connected
- 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.)
- Abandoned
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- Storage Of Harvested Produce (AREA)
Abstract
ABSTRACT
The invention relates to a device for turning and lifting a cylindrical bale of hay as it is elevated from a field and thereafter placed on a transport machine. The device includes a pair of clamping arms which can move relative to each other to clamp a bale therebetween and to release the bale therefrom. The clamping arms are part of a component that is pivotally connected to a frame for rotation through 90°.
In one embodiment, the frame itself is mounted to the transport machine for rotation about a horizontal axis. The clamping arms grasp the bale as it rests on the field with its axis across the direction of equipment travel and the as the frame is elevated the bale is rotated so that its axis lies along the direction of travel. The bale is then released to the transport machine. In another embodiment the frame is attached to an articulated arm that raises the bale and deposits it at a desired position on the transport machine. By using this device the equipment does not have to cross furrows, ridges, windrows or irrigation ditches as the bales are retrieved, making for a smoother, safer and less wearing operation.
The invention relates to a device for turning and lifting a cylindrical bale of hay as it is elevated from a field and thereafter placed on a transport machine. The device includes a pair of clamping arms which can move relative to each other to clamp a bale therebetween and to release the bale therefrom. The clamping arms are part of a component that is pivotally connected to a frame for rotation through 90°.
In one embodiment, the frame itself is mounted to the transport machine for rotation about a horizontal axis. The clamping arms grasp the bale as it rests on the field with its axis across the direction of equipment travel and the as the frame is elevated the bale is rotated so that its axis lies along the direction of travel. The bale is then released to the transport machine. In another embodiment the frame is attached to an articulated arm that raises the bale and deposits it at a desired position on the transport machine. By using this device the equipment does not have to cross furrows, ridges, windrows or irrigation ditches as the bales are retrieved, making for a smoother, safer and less wearing operation.
Description
2a9~
ROTATING PICKUP BALE ARM
The present invention relates to a device for use on cylindrical hay bale transport machines and in particular to a device which rotates a cylindrical hay bale through 90 for placement on the machine.
BACKGROUND OF THE INVENTION
There is a trend towards the baling of hay into cylindrical, rather than rectangular, bales. Such cylindrical bales can have a diameter and length of 1 to 2 m, but they are not easily lifted from the ground to a transport machine for transport to a storage area. A typical cylindrical baler travels along a windrow of mown hay, lo creating the cylindrical bale as it moves. When the bale has been made it is released from the baler and drops to the ground, lying with its axis at about 90 to the windrow and the direction of baler travel.
With conventional bale lifters one must travel at 90 to the windrows so as to be parallel to the bale axis, the lifter elevating the bale and allowing it to roll 15 downwardly onto a conveyor wagon that is capable of temporarily storing several bales end to end. This is very inconvenient and oftentimes difficult in that the bale lifter equipment must travel at 90 to the windrows and furrows of the field. This means that it must ride over a series of parallel ridges, making for an uncomfortable ride for the operator and a very bumpy ride for the equipment, increasing the chances of 2 o damage and the onset of wear. The lifting of cylindrical bales in this conventional manner is even more difficult and damaging if the field has irrigation ditches therein or if the crop is planted in parallel ridges and flood irrigated.
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2 2096~
One particular attempt at overcoming the problems of elevating cylindrical bales is found in U.S. Patent No. 4,909,694 issued to Francis A. Peters et al on March 20, l990. The Peters et al machine has a pickup unit that cradles a bale with the bale axis perpendicular to the machine travel direction. As the machine moves forwardly 5 the cradle is forced to rotate through 90 to bring the bale axis parallel to the travel direction. Then the cradle is elevated so as to raise the bale to the level of the machine and then the bale is dumped onto the machine. The cradle is lowered and a spring brings it back to a position at which it can accept a new bale. This machine does not adequately secure the bale prior to elevation thereof and it relies on machine 10 movement to effect rotation of the bale before elevation. The machine would not work effectively in wet fields or in areas where the ridges between adjacent windrows are very high, as in Texas.
SUMMARY OF THE INVENTION
The present invention addresses the problem of lifting cylindrical bales of 15 hay from furrowed fields when the bales are lying at about 90 to the furrows (or ridges). The device of this invention travels along the furrows, parallel thereto, engages a bale and then lifts and turns it through 90 so that it can be placed on the transport machine with its axis along the direction of travel. In one embodiment the present invention provides for a positive clamping of a bale between clamping arms 20 or jaws and also provides for positive rotation of the bale through 90 prior to elevation thereof to the transport machine. In another embodiment the clamping jaws are connected to an articulated arm at one end of the transport machine, such as a truck or trailer bed. The articulated arm lifts and turns the bale simultaneously and deposits it on the bed. If the truck or trailer bed is provided with side extensions then , 2~9~0~
the arm can be programmed or controlled so as to place two bales side by side on the bed and a third bale on top of and between the first two bales, creating a stack of three bales. The bale or bales is pushed towards the rear of the transport machine so that additional bales can be loaded onto the transport machine.
Generally speaking the present invention may be considered as providing a device for lifting a bale of hay resting on the ground for placement on a transport machine. The device comprises: (a) adjustable clamping means having a first elongated tubular member to which a first clamping jaw member is fixed at right angles thereto, and a second elongated member to which a second clamping jaw o member is fixed at right angles thereto, the second member being slidable within the tubular member to adjust the distance between the clamping jaw members; (b) first drive means for moving the second clamping jaw member towards the first clamping jaw member to bring the clamping jaw members into contact with respective end faces of a bale of hay to securely clamp the bale between the clamping jaw members, and for moving the second clamping jaw member away from the first clamping jaw member to release the bale from the clamping jaw members; (c) frame means to which the clamping means is pivotally connected for rotation about a first pivot axis, the frame means being pivotally connected to the transport machine for generally vertical rotation about a second pivot axis; (d) second drive means for pivotally rotating the 2 o clamping means about the first axis between positions at which the clamping means can receive a bale and the clamping means is engaged with the frame means; and (e) third drive means for rotating the frame means and the clamping means when engaged therewith about the second axis to elevate a bale to the transport machine and to lower the frame and clamping means for reception of another bale.
4 2096~45 The invention may also be considered as providing a device for lifting a bale of hay resting on the ground for placement at a desired position on a transport machine, the device comprising: (a) adjustable clamping means having spaced apart relatively movable clamping jaw members for clamping a bale of hay therebetween;
5 (b) frame means to which the clamping means is pivotally connected for rotation about a first pivot axis; (c) articulated arm means pivotally connected at one end to the transport machine for generally vertical rotation about a second pivot axis, the frame means being affixed to the other end of the articulated arm means; (d) first drive means for reciprocally moving at least one of the clamping jaw members relative to 0 the other clamping jaw member; (e) second drive means for rotating the clamping means about the first axis; and (f) third drive means for articulating the arm means to and from a bale pickup position and the desired position on the transport machine.
This invention has the advantage that it allows for faster, smoother, less stressful lifting of bales in comparison to conventional lifters. Because the clamping 5 means are close to the operator he will have a better view for aligning the clamping means with the bale. Because the clamping jaws clamp the bale therebetween it will be easier to lift bales that have been poorly made or on which the baling twine has broken. Of course, there will be less chance of breaking the baling twine with the present invention than with conventional equipment. The device of the second 2 0 embodiment permits pickup to take place close to the transport machine and hence no restraining devices for the bale are needed.
Other advantages of the present invention will become apparent from the description to follow.
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5 2~91~0~5 BRIEF DESCRIPIION OF THE DRAWINGS
Figure 1 shows the first embodiment of the present invention in position to pick up a cylindrical bale of hay.
Figure 2 shows the device of Figure 1 in position to deposit a bale on the 5 transport machine.
Figure 3 shows the clamping means and the frame means in the position of Figure 2.
Figure 4 is a plan view of the clamping means in partial section.
Figure 5 is a perspective view of the frame means.
Figure 6 is a perspective view of the second embodiment of the present invenhon.
Figure 7 is a front end view of the transport machine showing the articulated arm means seen in Figure 6.
Figure 8 shows part of the drive means for the articulated arm means. ;
Figure 9 shows a partial plan view of the bed of the transport machine.
Figure 10 is a partial end view showing the outrigger portions of the bed and the drive means for the articulated arm means.
Figure 11 illustrates the switch panel used to control the components of the second embodiment.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figures 1 and 2 show the first embodiment of the present invention in relation to a bale transport machine 10. The transport machine 10 is in the form of a trailer, to be pulled by a tractor 12. The transport machine includes longitudinal members 14 and a suitable framework and suspension 16 along with road wheels 18.
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6 20960~5 Further details of the transport machine need not be described as the machine is generally conventional in construction.
The device 20 of the present invention is mounted at the front of the machine 10, on one side thereof, close to the tractor and the operator. The device 20 5 includes two main components and suitable drive means for moving those components in a desired pattern and sequence. The device of the invention utilizes clamping means 22 and frame means 24, the latter being mounted directly to the transport machine 10 as at 26. The frame means 24 is pivotally connected to the transport machine for generally vertical rotation about a generally honzontal axis 28. The clamping means o 22 is pivotally connected to the frame means 24 for generally horizontal rotation about a generally vertical first axis 30 in the position of Figure 1.
With reference now to Figures 3 and 4 the clamping means 22 will be described in greater detail. The clamping means includes a first tubular member 32, of generally square configuration. A second member 34 in the form of a tubular or 15 solid bar is telescopically received within the first member 32, having a close sliding fit therein. Each of the members 32 and 34 has an elongated clamping jaw rnember 36 welded thereto at opposite ends of the clamping means 22. Each clamping jaw mernber is rigid, preferably of square cross-section and is bent outwardly adjacent the outer end thereof as at 36. Lugs 38 and 40 are welded to the first member 32, on 2 o opposite sides thereof, adjacent the end opposite the second member 34. The lugs 38 and 40 are provided with through holes 42 and 44 for reception of a bolt or other member defining the pivot axis 30 and allowing for pivotal movement of the clamping means about the axis 30.
The first drive means 46 for the apparatus of this invention is contained 2 5 within the first tubular member and takes the form of a piston and cylinder 7 2~9~S
arrangement. The cylinder 48 containing the piston is anchored at one end to the tubular member 32 as at 50 and the rod 52 connected to the piston extends inwardly of the tubular member 32 to be connected to the inner end of the second tubular member 34 within the first member 32. As seen in Figure 4 operation of the drive 5 means 46 serves to move the second tubular member outwardly and inwardly of the first tubular member (arrow A) so as to move the clamping jaw members away from or towards each other as the case might be.
Figures 3 and 5 illustrate the frame means 24 utilized with this invention.
The frame means 24 includes a longitudinally extending bar or square tubular member lO 54 having narrow lug members 56 welded thereto at each end, the lug members 56 extending normal to the bar 54 and each having a through hole 58 therein coinciding with the axis 28. At one end there is a first post member 60 welded to the bar 54, the post member 60 having a through hole 64 for reception of the bolt or other pivot member used to pivotally connect the clamping means 22 to the frame means 24. A
second post member 62 is welded to the bar 54 spaced from the first post member so as to be positioned adjacent the end of the first tubular member 32 that is near the second tubular member 34. The second post member 62 is provided with a pair of guide flaps 66 into which the tubular member 32 is guided when it returns to the position of Figure 3.
2 o The frame means 24 is also provided with connections for the second and third drive means of the invention. A lug 68 is welded to the bar 54 near the second post member 62 so that a second piston and cylinder arrangement 70 may be connected thereto. One end of the arrangement 70, such as the cylinder 72 containing the piston, is pivotally connected to the lug 68 while the rod 74, connected to the piston, is itself connected to the lug 40. Operation of the drive means 70 will cause the clamping 8 20~60~
means 22 to rotate about the axis 30 as shown by the arrow B. A pair of lugs 76 is welded to the bar 54 at the opposite end thereof. The third drive means 78, in the form of another piston and cylinder arrangement, is connected at one end to the lugs 76 and at the other end to a suitable point on the transport machine. Operation of the 5 third drive means will cause the frame means 24 to rotate about the axis 28, moving the frame means and the clamping means between the positions shown in Figures 1 and 2.
Although not expressly illustrated in the drawings it will be appreciated that suitable hydraulic circuitry and control means, well within the purview of a competent o technician will be provided on the transport machine to effect appropriate sequential operation of the components of this invention. That operation will be described hereinbelow.
It will be initially assumed that the field of hay has been mown and that a plurality of cylindrical bales of hay lie on the field with the axis of each bale being 15 at about 90 to the direction of baler travel. The transport machine 10 is connected to the tractor 12 and all necessary hydraulic connections have been made.
The tractor operator pulls the transport machine along the direction of baler travel until he encounters his first bale Bl, the axis thereof Iying across his direction of travel. The operator will actuate the control means to operate the third and second 2 o drive means and thereby cause the clamping means 22 and the frame means 24 to pivot downwardly about the axis 28 and the clamping means to rotate forwardly to the position shown in Figure 2 with the clamping jaw members 36 pointing forwardly.
The control means are actuated to cause the first drive means to separate the clamping jaw members 36 enough to accept a cylindrical bale lengthwise therebetween. The 25 clamping jaw members are then caused to move towards each other so as to clamp the 9 20~60~
bale therebetween. Since the clamping jaw members 36 are at a height of about 14 inches (35 cm) above the ground there is little danger of damage from rocks or earth mounds. Other equipment which must slide on the ground to move underneath a bale is susceptible to such damage.
Once the bale has been suitably clamped the operator will actuate the second and third drive means to cause simultaneous rotation of the clamping means rearwardly and rotation of the clamping means and frame means upwardly to the position shown in Figure 2. At that position the clamping jaw members can be separated enough to release the bale so that it will drop onto the transport machine.
0 Once on the machine the usual equipment thereon will move the bale rearwardly so that another bale can take its place. Preferably the transport machine will include fence members 80 and 82 to prevent the bale from falling off the transport machine as it is released from the clamping arms 36.
Figure 6 illustrates a second embodiment of the present invention. Therein it is seen that the transport machine 100 is in the form of a self-propelled vehicle including a cab and engine section 102 and an elongated bed section 104. A suitable drive train is provided to propel the machine through the fields and along the roads.
Of course, this embodiment would also work equally well with a tractor-drawn trailer arrangement.
The bed section of the invention will be described in greater detail hereinbelow. However, at one end of the bed section, preferably at the front thereof, there is provided a bale pickup, rotation and deposit device 106 which includes a bale clamping means 108, a frame means 110 and articulated arm means 112, along with suitable drive means therefor. The clamping means 108 is adapted to clamp a bale of 25 hay having its axis transverse to the direction of travel of the transport machine 100 ,. . :
20~6045 and to rotate the bale through 90 to bring its axis parallel to the direction of travel.
The articulated arm means is adapted to elevate the clamped bale and to swing it over the forward end of the bed section for deposit thereon at a desired location. If the bed section is provided with lateral outriggers as seen in Figures 6 and 7 then the bed 5 section can accept two bales side-by-side and a third bale on top of and between the lower two bales. By pushing an appropriate button on his control console the operator can select the location on the bed section at which the bale is to be deposited. Once the desired number of bales has been deposited on the bed section by the arm means 112 a pusher mechanism 114 is actuated to push the bale or bales rearwardly by about o one bale length so that another bale or set of bales can be deposited on the bed section.
The clamping means 108 is essentially the same as the clamping means 22 of the first embodiment, including spaced apart jaw members 116,118 which can be moved towards each other or away from each other by suitable drive means, such as a piston and cylinder arrangement mounted therein, as seen in Figure 4. The clamping 15 means 108 is pivotally connected at one end thereof to the frame means 110 which, in this embodiment is a simplified version of the first embodiment frame means. In this case the frame means 110 comprises an elongated bar 120 with the clamping means 108 pivotally attached thereto as at 122 and with suitable guide means such as lugs 124 provided part way along the length thereof to secure the clamping means 108 2 o after rotation thereof.
The articulated arm means 112 includes three distinct components, namely a post member 126 fixed to the transport machine, a first arm member 128 pivotally attached at one end thereof to the upper end of the post member 126, and a second arm member 130 pivotally attached to the other end of the first arm member 128. The 25 free end of the second arm member 130 is fixed to the frame means 110. The second 11 2~9~0~
arm member 130 is bent midway along its length to move the upper pivot point thereof outwardly over the clamping means 108.
Figures 8 and 10 illustrate the drive means for the articulated arm 112.
Figure 8 shows an hydraulic motor 132 mounted to the arm 128 and which drives a 5 5 to 1 gear reduction box 134 which in turn is coupled via chain 136 to a large diameter toothed sprocket 138 welded to the bent arm 130. Operation of the motor 132 will effect desired rotation of the arm 130 relative to the arm 128.
Figure 10 shows the drive for the arm 128. Secured to the post 126, as by welding is a horizontal bar 140, supported at its end opposite the post by another 10 post 142. Lugs 144 are affixed to the bar 140 adjacent post 142 and pivotally mount an hydraulic piston 146, the rod 148 of which is connected to the appropriate hole 150 of a lever arm 152. The other end of the lever arm 152 is pivotally connected to the arm member 128 via lugs 154. The choice of which of the holes 150 to use will depend on the height of the transport machine relative to the ground. A hole closer 15 to the upper end of the lever arm will allow the clamping means to be positioned closer to the ground than with a hole closer to the lugs 154. A stabili~er bar 156 is pivotally connected to lugs 158 on the bar 140.
As can be seen in Figure 6 the bed section 104 is quite long, perhaps as much as 32 feet. It includes central rails 160 and outer rails 162 as well as a plurality 20 of longitudinally spaced transverse rails 164. Ramp members 166 are provided at the tail end of the bed section, to retain bales when elevated and to facilitate unloading of the bales when lowered. The ramp members are secured to rocker shaft 168 to which a bell crank 170 is attached generally at the mid point thereof. An hydraulic piston and cylinder arrangement 172 is secured to one of the transverse members 164 and is 25 connected to the bell crank 170 by a rod 174. Operation of the piston and cylinder 12 2~9~0~
arrangement 172 will effect rotation of the rocker shaft 16~ and consequent raising or lowering of the ramp members 166.
At the forward end of the bed section the pusher mechanism 114 includes a pusher bar or member 176 which can ride along the rails 160 under suitable power 5 so as to push bales of hay rearwardly along the bed section. As seen in Figure 9 the pusher bar is preferably driven by a motor 178 operating a reduction gear box 180 which in turn drives a shaft 182 held by bearing supports 184. At each end the shaft 182 mounts a sprocket 186 which drives a chain member 188, the pusher bar being connected to the chains 188. At the far end of the bed is another shaft 190 mounting lo sprockets 192 at each end for driving engagement by the chains 188. Adjustable bearing supports 192 can be used to adjust the tension in each chain 188.
The bed section 104 can be provided with outriggers 194, one on each side of the bed section, so as to increase the effective width of the bed section, whereby two 6 ft. diameter bales could be placed on the bed section side-by-side. Since the 15 outriggers 194 would increase the bed section width to more than 12 feet they are pivoted to the bed section 104 so that they can be rotated to a vertical (or close to vertical) attitude for travel on the highway. Hydraulic piston and cylinder arrangement 196 as seen in Figure 9 carries a pulley member 198 and has a wire, chain or rope 200 entrained thereabout. The wire, chain or rope 200 passes around pulleys 202 and is 20 connected at its ends to end bars 204 of the outrigger 194 so as to rotate the outrigger 194 between the operating and storage or travel positions thereof. Further details of the outriggers 194 are not required for a full understanding of the invention. For the sake of simplicity only one of the outriggers is shown in Figure 9. The other outrigger would be mounted and moved on the same manner.
. . -13 20g604~i Figure 11 shows the control panel 206 accessible to the operator. The panel mounts nine switches therein, each in turn connected to a logic circuit (not shown) for hydraulic control of the components. Switch 208 is a master switch and without it actuated the system will not operate. A warning light 210 indicates the 5 status of the switch. Switches 21~ and 214 control the speed of the system and the status of the hydraulic pump ~not shown), both of these switches having status lights 210. Switches 216 and 218 raise or lower the outriggers 194 and the ramp members 166 respectively. Similarly, switch 220 operates the pusher bar 176, moving it backwards or forwards on the bed 104.
Switches 222,224 and 226 are the most important from the standpoint of this invention as they control the movement of the articulated arm 112 and the bales held by the clamping means 108. Operation of each switch will cause the clamp;ng jaw members 116,118 to clamp a bale therebetween and will effect rotation of the clamping means 108 relative to the frame means so as to rotate a bale into a position 15 such that its axis is parallel to the bed 104. Operation of switch 222 will cause the drivf means for the articulated arm means 106 to raise the bale and move it to the position labelled A in Figure 7, the bale resting on corresponding rails 160 and 162 and being kept in that position by the adjacent outrigger 194. Once the bale has been positioned the operator presses the switch 222 so as to return the clamping means to 20 its position to accept another bale. Once the next bale has been introduced to the clamping means switch 224 is pressed so as to cause the bale to be rotated, raised and the deposited on the other pair of rails lS2, 160 beside the first bale, in the position labelled B. The clamping means is returned to accept another bale and this time the switch 226 is actuated. The bale is rotated, raised and deposited on top of the first 25 two bales and between them, in the position labelled C. Then the pusher bar is 14 2096~4~
operated to move the three bales along the bed either the full length available on the bed or by one bale length. The pusher bar is then returned to the head of the bed so that the bale pickup operation can begin again.
Suitable microswitches can be provided on the bed and the moving 5 components to ensure that there is no jamming of the components or that one component cannot be operated while another is working. These microswitches are not shown. Neither is the hydraulic circuit, as these are well within the purview of a skilled person in the art.
As can be seen from the above, the present invention provides a simple yet lo effective mechanism for lifting hay bales from a f1eld and rotating them through 90 before placing them on a transport machine. The bales can be picked from the f1eld without having to drive the lifting equipment across the windrows, furrows or irrigation ditches and the entire task is considerably less wearing and frustrating for the operator. Also, although this invention was developed for use with cylindrical 15 bales it is clear that it would also operate with conventional bale conf1gurations if desired.
A preferred embodiment of the invention has been described herein but it is understood that skilled workmen in the area of farm equipment could effect various changes to the structure of the equipment without departing from the spirit of the 2 o invention. Thus the protection to be afforded this invention is to be determined from the claims appended hereto.
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ROTATING PICKUP BALE ARM
The present invention relates to a device for use on cylindrical hay bale transport machines and in particular to a device which rotates a cylindrical hay bale through 90 for placement on the machine.
BACKGROUND OF THE INVENTION
There is a trend towards the baling of hay into cylindrical, rather than rectangular, bales. Such cylindrical bales can have a diameter and length of 1 to 2 m, but they are not easily lifted from the ground to a transport machine for transport to a storage area. A typical cylindrical baler travels along a windrow of mown hay, lo creating the cylindrical bale as it moves. When the bale has been made it is released from the baler and drops to the ground, lying with its axis at about 90 to the windrow and the direction of baler travel.
With conventional bale lifters one must travel at 90 to the windrows so as to be parallel to the bale axis, the lifter elevating the bale and allowing it to roll 15 downwardly onto a conveyor wagon that is capable of temporarily storing several bales end to end. This is very inconvenient and oftentimes difficult in that the bale lifter equipment must travel at 90 to the windrows and furrows of the field. This means that it must ride over a series of parallel ridges, making for an uncomfortable ride for the operator and a very bumpy ride for the equipment, increasing the chances of 2 o damage and the onset of wear. The lifting of cylindrical bales in this conventional manner is even more difficult and damaging if the field has irrigation ditches therein or if the crop is planted in parallel ridges and flood irrigated.
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2 2096~
One particular attempt at overcoming the problems of elevating cylindrical bales is found in U.S. Patent No. 4,909,694 issued to Francis A. Peters et al on March 20, l990. The Peters et al machine has a pickup unit that cradles a bale with the bale axis perpendicular to the machine travel direction. As the machine moves forwardly 5 the cradle is forced to rotate through 90 to bring the bale axis parallel to the travel direction. Then the cradle is elevated so as to raise the bale to the level of the machine and then the bale is dumped onto the machine. The cradle is lowered and a spring brings it back to a position at which it can accept a new bale. This machine does not adequately secure the bale prior to elevation thereof and it relies on machine 10 movement to effect rotation of the bale before elevation. The machine would not work effectively in wet fields or in areas where the ridges between adjacent windrows are very high, as in Texas.
SUMMARY OF THE INVENTION
The present invention addresses the problem of lifting cylindrical bales of 15 hay from furrowed fields when the bales are lying at about 90 to the furrows (or ridges). The device of this invention travels along the furrows, parallel thereto, engages a bale and then lifts and turns it through 90 so that it can be placed on the transport machine with its axis along the direction of travel. In one embodiment the present invention provides for a positive clamping of a bale between clamping arms 20 or jaws and also provides for positive rotation of the bale through 90 prior to elevation thereof to the transport machine. In another embodiment the clamping jaws are connected to an articulated arm at one end of the transport machine, such as a truck or trailer bed. The articulated arm lifts and turns the bale simultaneously and deposits it on the bed. If the truck or trailer bed is provided with side extensions then , 2~9~0~
the arm can be programmed or controlled so as to place two bales side by side on the bed and a third bale on top of and between the first two bales, creating a stack of three bales. The bale or bales is pushed towards the rear of the transport machine so that additional bales can be loaded onto the transport machine.
Generally speaking the present invention may be considered as providing a device for lifting a bale of hay resting on the ground for placement on a transport machine. The device comprises: (a) adjustable clamping means having a first elongated tubular member to which a first clamping jaw member is fixed at right angles thereto, and a second elongated member to which a second clamping jaw o member is fixed at right angles thereto, the second member being slidable within the tubular member to adjust the distance between the clamping jaw members; (b) first drive means for moving the second clamping jaw member towards the first clamping jaw member to bring the clamping jaw members into contact with respective end faces of a bale of hay to securely clamp the bale between the clamping jaw members, and for moving the second clamping jaw member away from the first clamping jaw member to release the bale from the clamping jaw members; (c) frame means to which the clamping means is pivotally connected for rotation about a first pivot axis, the frame means being pivotally connected to the transport machine for generally vertical rotation about a second pivot axis; (d) second drive means for pivotally rotating the 2 o clamping means about the first axis between positions at which the clamping means can receive a bale and the clamping means is engaged with the frame means; and (e) third drive means for rotating the frame means and the clamping means when engaged therewith about the second axis to elevate a bale to the transport machine and to lower the frame and clamping means for reception of another bale.
4 2096~45 The invention may also be considered as providing a device for lifting a bale of hay resting on the ground for placement at a desired position on a transport machine, the device comprising: (a) adjustable clamping means having spaced apart relatively movable clamping jaw members for clamping a bale of hay therebetween;
5 (b) frame means to which the clamping means is pivotally connected for rotation about a first pivot axis; (c) articulated arm means pivotally connected at one end to the transport machine for generally vertical rotation about a second pivot axis, the frame means being affixed to the other end of the articulated arm means; (d) first drive means for reciprocally moving at least one of the clamping jaw members relative to 0 the other clamping jaw member; (e) second drive means for rotating the clamping means about the first axis; and (f) third drive means for articulating the arm means to and from a bale pickup position and the desired position on the transport machine.
This invention has the advantage that it allows for faster, smoother, less stressful lifting of bales in comparison to conventional lifters. Because the clamping 5 means are close to the operator he will have a better view for aligning the clamping means with the bale. Because the clamping jaws clamp the bale therebetween it will be easier to lift bales that have been poorly made or on which the baling twine has broken. Of course, there will be less chance of breaking the baling twine with the present invention than with conventional equipment. The device of the second 2 0 embodiment permits pickup to take place close to the transport machine and hence no restraining devices for the bale are needed.
Other advantages of the present invention will become apparent from the description to follow.
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5 2~91~0~5 BRIEF DESCRIPIION OF THE DRAWINGS
Figure 1 shows the first embodiment of the present invention in position to pick up a cylindrical bale of hay.
Figure 2 shows the device of Figure 1 in position to deposit a bale on the 5 transport machine.
Figure 3 shows the clamping means and the frame means in the position of Figure 2.
Figure 4 is a plan view of the clamping means in partial section.
Figure 5 is a perspective view of the frame means.
Figure 6 is a perspective view of the second embodiment of the present invenhon.
Figure 7 is a front end view of the transport machine showing the articulated arm means seen in Figure 6.
Figure 8 shows part of the drive means for the articulated arm means. ;
Figure 9 shows a partial plan view of the bed of the transport machine.
Figure 10 is a partial end view showing the outrigger portions of the bed and the drive means for the articulated arm means.
Figure 11 illustrates the switch panel used to control the components of the second embodiment.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Figures 1 and 2 show the first embodiment of the present invention in relation to a bale transport machine 10. The transport machine 10 is in the form of a trailer, to be pulled by a tractor 12. The transport machine includes longitudinal members 14 and a suitable framework and suspension 16 along with road wheels 18.
. ~ -, .
6 20960~5 Further details of the transport machine need not be described as the machine is generally conventional in construction.
The device 20 of the present invention is mounted at the front of the machine 10, on one side thereof, close to the tractor and the operator. The device 20 5 includes two main components and suitable drive means for moving those components in a desired pattern and sequence. The device of the invention utilizes clamping means 22 and frame means 24, the latter being mounted directly to the transport machine 10 as at 26. The frame means 24 is pivotally connected to the transport machine for generally vertical rotation about a generally honzontal axis 28. The clamping means o 22 is pivotally connected to the frame means 24 for generally horizontal rotation about a generally vertical first axis 30 in the position of Figure 1.
With reference now to Figures 3 and 4 the clamping means 22 will be described in greater detail. The clamping means includes a first tubular member 32, of generally square configuration. A second member 34 in the form of a tubular or 15 solid bar is telescopically received within the first member 32, having a close sliding fit therein. Each of the members 32 and 34 has an elongated clamping jaw rnember 36 welded thereto at opposite ends of the clamping means 22. Each clamping jaw mernber is rigid, preferably of square cross-section and is bent outwardly adjacent the outer end thereof as at 36. Lugs 38 and 40 are welded to the first member 32, on 2 o opposite sides thereof, adjacent the end opposite the second member 34. The lugs 38 and 40 are provided with through holes 42 and 44 for reception of a bolt or other member defining the pivot axis 30 and allowing for pivotal movement of the clamping means about the axis 30.
The first drive means 46 for the apparatus of this invention is contained 2 5 within the first tubular member and takes the form of a piston and cylinder 7 2~9~S
arrangement. The cylinder 48 containing the piston is anchored at one end to the tubular member 32 as at 50 and the rod 52 connected to the piston extends inwardly of the tubular member 32 to be connected to the inner end of the second tubular member 34 within the first member 32. As seen in Figure 4 operation of the drive 5 means 46 serves to move the second tubular member outwardly and inwardly of the first tubular member (arrow A) so as to move the clamping jaw members away from or towards each other as the case might be.
Figures 3 and 5 illustrate the frame means 24 utilized with this invention.
The frame means 24 includes a longitudinally extending bar or square tubular member lO 54 having narrow lug members 56 welded thereto at each end, the lug members 56 extending normal to the bar 54 and each having a through hole 58 therein coinciding with the axis 28. At one end there is a first post member 60 welded to the bar 54, the post member 60 having a through hole 64 for reception of the bolt or other pivot member used to pivotally connect the clamping means 22 to the frame means 24. A
second post member 62 is welded to the bar 54 spaced from the first post member so as to be positioned adjacent the end of the first tubular member 32 that is near the second tubular member 34. The second post member 62 is provided with a pair of guide flaps 66 into which the tubular member 32 is guided when it returns to the position of Figure 3.
2 o The frame means 24 is also provided with connections for the second and third drive means of the invention. A lug 68 is welded to the bar 54 near the second post member 62 so that a second piston and cylinder arrangement 70 may be connected thereto. One end of the arrangement 70, such as the cylinder 72 containing the piston, is pivotally connected to the lug 68 while the rod 74, connected to the piston, is itself connected to the lug 40. Operation of the drive means 70 will cause the clamping 8 20~60~
means 22 to rotate about the axis 30 as shown by the arrow B. A pair of lugs 76 is welded to the bar 54 at the opposite end thereof. The third drive means 78, in the form of another piston and cylinder arrangement, is connected at one end to the lugs 76 and at the other end to a suitable point on the transport machine. Operation of the 5 third drive means will cause the frame means 24 to rotate about the axis 28, moving the frame means and the clamping means between the positions shown in Figures 1 and 2.
Although not expressly illustrated in the drawings it will be appreciated that suitable hydraulic circuitry and control means, well within the purview of a competent o technician will be provided on the transport machine to effect appropriate sequential operation of the components of this invention. That operation will be described hereinbelow.
It will be initially assumed that the field of hay has been mown and that a plurality of cylindrical bales of hay lie on the field with the axis of each bale being 15 at about 90 to the direction of baler travel. The transport machine 10 is connected to the tractor 12 and all necessary hydraulic connections have been made.
The tractor operator pulls the transport machine along the direction of baler travel until he encounters his first bale Bl, the axis thereof Iying across his direction of travel. The operator will actuate the control means to operate the third and second 2 o drive means and thereby cause the clamping means 22 and the frame means 24 to pivot downwardly about the axis 28 and the clamping means to rotate forwardly to the position shown in Figure 2 with the clamping jaw members 36 pointing forwardly.
The control means are actuated to cause the first drive means to separate the clamping jaw members 36 enough to accept a cylindrical bale lengthwise therebetween. The 25 clamping jaw members are then caused to move towards each other so as to clamp the 9 20~60~
bale therebetween. Since the clamping jaw members 36 are at a height of about 14 inches (35 cm) above the ground there is little danger of damage from rocks or earth mounds. Other equipment which must slide on the ground to move underneath a bale is susceptible to such damage.
Once the bale has been suitably clamped the operator will actuate the second and third drive means to cause simultaneous rotation of the clamping means rearwardly and rotation of the clamping means and frame means upwardly to the position shown in Figure 2. At that position the clamping jaw members can be separated enough to release the bale so that it will drop onto the transport machine.
0 Once on the machine the usual equipment thereon will move the bale rearwardly so that another bale can take its place. Preferably the transport machine will include fence members 80 and 82 to prevent the bale from falling off the transport machine as it is released from the clamping arms 36.
Figure 6 illustrates a second embodiment of the present invention. Therein it is seen that the transport machine 100 is in the form of a self-propelled vehicle including a cab and engine section 102 and an elongated bed section 104. A suitable drive train is provided to propel the machine through the fields and along the roads.
Of course, this embodiment would also work equally well with a tractor-drawn trailer arrangement.
The bed section of the invention will be described in greater detail hereinbelow. However, at one end of the bed section, preferably at the front thereof, there is provided a bale pickup, rotation and deposit device 106 which includes a bale clamping means 108, a frame means 110 and articulated arm means 112, along with suitable drive means therefor. The clamping means 108 is adapted to clamp a bale of 25 hay having its axis transverse to the direction of travel of the transport machine 100 ,. . :
20~6045 and to rotate the bale through 90 to bring its axis parallel to the direction of travel.
The articulated arm means is adapted to elevate the clamped bale and to swing it over the forward end of the bed section for deposit thereon at a desired location. If the bed section is provided with lateral outriggers as seen in Figures 6 and 7 then the bed 5 section can accept two bales side-by-side and a third bale on top of and between the lower two bales. By pushing an appropriate button on his control console the operator can select the location on the bed section at which the bale is to be deposited. Once the desired number of bales has been deposited on the bed section by the arm means 112 a pusher mechanism 114 is actuated to push the bale or bales rearwardly by about o one bale length so that another bale or set of bales can be deposited on the bed section.
The clamping means 108 is essentially the same as the clamping means 22 of the first embodiment, including spaced apart jaw members 116,118 which can be moved towards each other or away from each other by suitable drive means, such as a piston and cylinder arrangement mounted therein, as seen in Figure 4. The clamping 15 means 108 is pivotally connected at one end thereof to the frame means 110 which, in this embodiment is a simplified version of the first embodiment frame means. In this case the frame means 110 comprises an elongated bar 120 with the clamping means 108 pivotally attached thereto as at 122 and with suitable guide means such as lugs 124 provided part way along the length thereof to secure the clamping means 108 2 o after rotation thereof.
The articulated arm means 112 includes three distinct components, namely a post member 126 fixed to the transport machine, a first arm member 128 pivotally attached at one end thereof to the upper end of the post member 126, and a second arm member 130 pivotally attached to the other end of the first arm member 128. The 25 free end of the second arm member 130 is fixed to the frame means 110. The second 11 2~9~0~
arm member 130 is bent midway along its length to move the upper pivot point thereof outwardly over the clamping means 108.
Figures 8 and 10 illustrate the drive means for the articulated arm 112.
Figure 8 shows an hydraulic motor 132 mounted to the arm 128 and which drives a 5 5 to 1 gear reduction box 134 which in turn is coupled via chain 136 to a large diameter toothed sprocket 138 welded to the bent arm 130. Operation of the motor 132 will effect desired rotation of the arm 130 relative to the arm 128.
Figure 10 shows the drive for the arm 128. Secured to the post 126, as by welding is a horizontal bar 140, supported at its end opposite the post by another 10 post 142. Lugs 144 are affixed to the bar 140 adjacent post 142 and pivotally mount an hydraulic piston 146, the rod 148 of which is connected to the appropriate hole 150 of a lever arm 152. The other end of the lever arm 152 is pivotally connected to the arm member 128 via lugs 154. The choice of which of the holes 150 to use will depend on the height of the transport machine relative to the ground. A hole closer 15 to the upper end of the lever arm will allow the clamping means to be positioned closer to the ground than with a hole closer to the lugs 154. A stabili~er bar 156 is pivotally connected to lugs 158 on the bar 140.
As can be seen in Figure 6 the bed section 104 is quite long, perhaps as much as 32 feet. It includes central rails 160 and outer rails 162 as well as a plurality 20 of longitudinally spaced transverse rails 164. Ramp members 166 are provided at the tail end of the bed section, to retain bales when elevated and to facilitate unloading of the bales when lowered. The ramp members are secured to rocker shaft 168 to which a bell crank 170 is attached generally at the mid point thereof. An hydraulic piston and cylinder arrangement 172 is secured to one of the transverse members 164 and is 25 connected to the bell crank 170 by a rod 174. Operation of the piston and cylinder 12 2~9~0~
arrangement 172 will effect rotation of the rocker shaft 16~ and consequent raising or lowering of the ramp members 166.
At the forward end of the bed section the pusher mechanism 114 includes a pusher bar or member 176 which can ride along the rails 160 under suitable power 5 so as to push bales of hay rearwardly along the bed section. As seen in Figure 9 the pusher bar is preferably driven by a motor 178 operating a reduction gear box 180 which in turn drives a shaft 182 held by bearing supports 184. At each end the shaft 182 mounts a sprocket 186 which drives a chain member 188, the pusher bar being connected to the chains 188. At the far end of the bed is another shaft 190 mounting lo sprockets 192 at each end for driving engagement by the chains 188. Adjustable bearing supports 192 can be used to adjust the tension in each chain 188.
The bed section 104 can be provided with outriggers 194, one on each side of the bed section, so as to increase the effective width of the bed section, whereby two 6 ft. diameter bales could be placed on the bed section side-by-side. Since the 15 outriggers 194 would increase the bed section width to more than 12 feet they are pivoted to the bed section 104 so that they can be rotated to a vertical (or close to vertical) attitude for travel on the highway. Hydraulic piston and cylinder arrangement 196 as seen in Figure 9 carries a pulley member 198 and has a wire, chain or rope 200 entrained thereabout. The wire, chain or rope 200 passes around pulleys 202 and is 20 connected at its ends to end bars 204 of the outrigger 194 so as to rotate the outrigger 194 between the operating and storage or travel positions thereof. Further details of the outriggers 194 are not required for a full understanding of the invention. For the sake of simplicity only one of the outriggers is shown in Figure 9. The other outrigger would be mounted and moved on the same manner.
. . -13 20g604~i Figure 11 shows the control panel 206 accessible to the operator. The panel mounts nine switches therein, each in turn connected to a logic circuit (not shown) for hydraulic control of the components. Switch 208 is a master switch and without it actuated the system will not operate. A warning light 210 indicates the 5 status of the switch. Switches 21~ and 214 control the speed of the system and the status of the hydraulic pump ~not shown), both of these switches having status lights 210. Switches 216 and 218 raise or lower the outriggers 194 and the ramp members 166 respectively. Similarly, switch 220 operates the pusher bar 176, moving it backwards or forwards on the bed 104.
Switches 222,224 and 226 are the most important from the standpoint of this invention as they control the movement of the articulated arm 112 and the bales held by the clamping means 108. Operation of each switch will cause the clamp;ng jaw members 116,118 to clamp a bale therebetween and will effect rotation of the clamping means 108 relative to the frame means so as to rotate a bale into a position 15 such that its axis is parallel to the bed 104. Operation of switch 222 will cause the drivf means for the articulated arm means 106 to raise the bale and move it to the position labelled A in Figure 7, the bale resting on corresponding rails 160 and 162 and being kept in that position by the adjacent outrigger 194. Once the bale has been positioned the operator presses the switch 222 so as to return the clamping means to 20 its position to accept another bale. Once the next bale has been introduced to the clamping means switch 224 is pressed so as to cause the bale to be rotated, raised and the deposited on the other pair of rails lS2, 160 beside the first bale, in the position labelled B. The clamping means is returned to accept another bale and this time the switch 226 is actuated. The bale is rotated, raised and deposited on top of the first 25 two bales and between them, in the position labelled C. Then the pusher bar is 14 2096~4~
operated to move the three bales along the bed either the full length available on the bed or by one bale length. The pusher bar is then returned to the head of the bed so that the bale pickup operation can begin again.
Suitable microswitches can be provided on the bed and the moving 5 components to ensure that there is no jamming of the components or that one component cannot be operated while another is working. These microswitches are not shown. Neither is the hydraulic circuit, as these are well within the purview of a skilled person in the art.
As can be seen from the above, the present invention provides a simple yet lo effective mechanism for lifting hay bales from a f1eld and rotating them through 90 before placing them on a transport machine. The bales can be picked from the f1eld without having to drive the lifting equipment across the windrows, furrows or irrigation ditches and the entire task is considerably less wearing and frustrating for the operator. Also, although this invention was developed for use with cylindrical 15 bales it is clear that it would also operate with conventional bale conf1gurations if desired.
A preferred embodiment of the invention has been described herein but it is understood that skilled workmen in the area of farm equipment could effect various changes to the structure of the equipment without departing from the spirit of the 2 o invention. Thus the protection to be afforded this invention is to be determined from the claims appended hereto.
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Claims (10)
1. A device for lifting a bale of hay resting on the ground for placement on a transport machine, said device comprising:
(a) adjustable clamping means having a first elongated tubular member to which a first clamping jaw member is fixed at right angles thereto, and a second elongated member to which a second clamping jaw member is fixed at right angles thereto, said second member being slidable within said tubular member to adjust the distance between said clamping jaw members;
(b) first drive means for moving said second clamping jaw member towards said first clamping jaw member to bring said clamping jaw members into contact with respective end faces of a bale of hay to securely clamp the bale between said clamping jaw members, and for moving said second clamping jaw member away from said first clamping jaw member to release the bale from the clamping jaw members;
(c) frame means to which the clamping means is pivotally connected for rotation about a first pivot axis, said frame means being pivotally connected to the transport machine for generally vertical rotation about a second pivot axis;
(d) second drive means for pivotally rotating said clamping means about the first axis between positions at which the clamping means can receive a bale and the clamping means is engaged with the frame means; and (e) third drive means for rotating said frame means and said clamping means when engaged therewith about the second axis to elevate a bale to the transport machine and to lower said frame and clamping means for reception of another bale.
(a) adjustable clamping means having a first elongated tubular member to which a first clamping jaw member is fixed at right angles thereto, and a second elongated member to which a second clamping jaw member is fixed at right angles thereto, said second member being slidable within said tubular member to adjust the distance between said clamping jaw members;
(b) first drive means for moving said second clamping jaw member towards said first clamping jaw member to bring said clamping jaw members into contact with respective end faces of a bale of hay to securely clamp the bale between said clamping jaw members, and for moving said second clamping jaw member away from said first clamping jaw member to release the bale from the clamping jaw members;
(c) frame means to which the clamping means is pivotally connected for rotation about a first pivot axis, said frame means being pivotally connected to the transport machine for generally vertical rotation about a second pivot axis;
(d) second drive means for pivotally rotating said clamping means about the first axis between positions at which the clamping means can receive a bale and the clamping means is engaged with the frame means; and (e) third drive means for rotating said frame means and said clamping means when engaged therewith about the second axis to elevate a bale to the transport machine and to lower said frame and clamping means for reception of another bale.
2. The device of claim 1 wherein said first drive means comprises: a first hydraulic piston and cylinder arrangement within said tubular member, one end of said piston and cylinder arrangement being fixed to said tubular member and the other end of said piston and cylinder arrangement being connected to an end of said second member within said tubular member.
3. The device of claim 2 wherein said frame means comprises: an elongated bar having a pair of lugs, one at each end thereof, said second axis extending through said lugs parallel to said bar; a first post member at one end of said bar at right angles to the adjacent lug, said first axis extending through said first post member parallel to said lug; and a second post member extending outwardly of said bar, spaced from said first post member and terminating at a pair of clamping means tubular member-receiving guide flaps.
4. The device of claim 3 wherein said second drive means comprises:
a second hydraulic piston and cylinder arrangement with one end thereof being pivotally connected to said bar and the other end thereof being pivotally connected to said clamping means tubular member.
a second hydraulic piston and cylinder arrangement with one end thereof being pivotally connected to said bar and the other end thereof being pivotally connected to said clamping means tubular member.
5. The device of claim 4 wherein said third drive means comprises: a third hydraulic piston and cylinder arrangement with one end thereof being pivotally connected to said frame means and the other end thereof being pivotally connected to the transport machine.
6. A device for lifting a bale of hay resting on the ground for placement at a desired position on a transport machine, the device comprising:
(a) adjustable clamping means having spaced apart relatively movable clamping jaw members for clamping a bale of hay therebetween;
(b) frame means to which said clamping means is pivotally connected for rotation about a first pivot axis;
(c) articulated arm means pivotally connected at one end to the transport machine for generally vertical rotation about a second pivot axis, said frame means being affixed to the other end of said articulated arm means;
(d) first drive means for reciprocally moving at least one of said clamping jaw members relative to the other clamping jaw member;
(e) second drive means for rotating said clamping means about the first axis; and (f) third drive means for articulating said arm means to and from a bale pickup position and the desired position on the transport machine.
(a) adjustable clamping means having spaced apart relatively movable clamping jaw members for clamping a bale of hay therebetween;
(b) frame means to which said clamping means is pivotally connected for rotation about a first pivot axis;
(c) articulated arm means pivotally connected at one end to the transport machine for generally vertical rotation about a second pivot axis, said frame means being affixed to the other end of said articulated arm means;
(d) first drive means for reciprocally moving at least one of said clamping jaw members relative to the other clamping jaw member;
(e) second drive means for rotating said clamping means about the first axis; and (f) third drive means for articulating said arm means to and from a bale pickup position and the desired position on the transport machine.
7. The device of claim 6 wherein said clamping means comprises a first elongated tubular member to which a one of the clamping jaw members is fixed at right angles thereto, and a second elongated member to which the other of said clamping jaw members is fixed at right angles, said second member being slidable within said tubular member to adjust the distance between said clamping jaw members.
8. The device of claim 7 wherein said articulated arm means comprises an upright post mounted to said transport machine, a first arm member pivotally connected at one end to the top of said post, and a second arm member pivotally connected at one end to the other end of said first arm member and mounting said frame means at the other end thereof.
9. The device of claim 8 wherein said third drive means comprises: a piston and cylinder arrangement connected at one end thereof to said transport machine and at the other end to said first arm member to effect rotation of said first arm member relative to said post; and a motor mounted at the other end of said first member, driving a reduction gear which in turn drives a sprocket fixed to the second arm member to effect rotation of said second arm member relative to said first arm member.
10. The device of claim 9 including a pusher bar slidably mounted on said transport machine for pushing bales of hay loaded on said machine towards the rear thereof, said pusher bar being connected to endless chain means extending along said transport machine, said chain means being entrained about a sprocket at each end of a drive shaft adjacent the front of said transport machine and a corresponding sprocket at each end of an idler shaft mounted towards the rear of the transport machine.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US88296592A | 1992-05-14 | 1992-05-14 | |
| US07/882,965 | 1992-05-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2096045A1 true CA2096045A1 (en) | 1993-11-15 |
Family
ID=25381703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2096045 Abandoned CA2096045A1 (en) | 1992-05-14 | 1993-05-12 | Rotating pickup bale arm |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2096045A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6837154B2 (en) | 2002-05-08 | 2005-01-04 | Gilbrea Consulting Ltd. | Bale moistening and handling apparatus |
| US7520213B2 (en) | 2002-05-08 | 2009-04-21 | Gilbrea Consulting Ltd. | Bale moistening and handling apparatus and method |
| CN105557202A (en) * | 2015-12-31 | 2016-05-11 | 天津萨克赛斯机械技术开发有限公司 | Crawler type stalk bundle picking-up machine |
-
1993
- 1993-05-12 CA CA 2096045 patent/CA2096045A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6837154B2 (en) | 2002-05-08 | 2005-01-04 | Gilbrea Consulting Ltd. | Bale moistening and handling apparatus |
| US7520213B2 (en) | 2002-05-08 | 2009-04-21 | Gilbrea Consulting Ltd. | Bale moistening and handling apparatus and method |
| CN105557202A (en) * | 2015-12-31 | 2016-05-11 | 天津萨克赛斯机械技术开发有限公司 | Crawler type stalk bundle picking-up machine |
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