CA1233031A - Grass shaving machine - Google Patents
Grass shaving machineInfo
- Publication number
- CA1233031A CA1233031A CA000458338A CA458338A CA1233031A CA 1233031 A CA1233031 A CA 1233031A CA 000458338 A CA000458338 A CA 000458338A CA 458338 A CA458338 A CA 458338A CA 1233031 A CA1233031 A CA 1233031A
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- Prior art keywords
- grass
- casing
- movable wall
- cut grass
- vessel
- Prior art date
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Abstract
ABSTRACT OF THE DISCLOSURE
There is disclosed a mowing machine comprising at least a grass cutting blade, rotating about an axis substantially per-pendicular to the ground and housed within a casing, open at the bottom and communicating with a cut grass conveying duct for disk charging the cut grass which comprises a movable wall at the bot-tom liftable towards the inlet mouth of a cut grass collecting container effective to be associated with the cut grass discharging mouth of the conveying duct.
There is disclosed a mowing machine comprising at least a grass cutting blade, rotating about an axis substantially per-pendicular to the ground and housed within a casing, open at the bottom and communicating with a cut grass conveying duct for disk charging the cut grass which comprises a movable wall at the bot-tom liftable towards the inlet mouth of a cut grass collecting container effective to be associated with the cut grass discharging mouth of the conveying duct.
Description
~33~.3~
'rho present invention relates to a mowing grass cutting) machine.
As is known, there are commercially available several types of rotating mowing machines, which are provided with a drive in assembly operating, either directly or indirectly, one or more grass cutting blades, rotating about an axis substantially per pen-declare to the ground and, in some cases, also the device to cause the mowing machine to advance. These mowing machines are provided with a casing which houses, at the top and laterally, the cutting blade or blades. The casing also prevents the mowing machine operator from accidentally contacting the rotating blades, and pro-vents the rotating blades from projecting cut grass or other bodies on the ground in undesired directions. The casing is frequently provided with a conveying duct, for evacuating cut grass towards the rear of the mowing machine, in such a way as to afford the possibility of attaching a container for said cut grass at the out-let mouth of said duct. In a mowing machine operated by an operator walking behind the machine itself, the casing contacts the ground by means of three or four wheels or two rollers, or a wheel and I roller combination. In some types of mowing machines, wheels or rollers are also used for the advancing of the mowing machine, as driven by the engine. In such a case, the cut grass collecting container is usually coupled to the casing in such a way that, as the operator adjusts the grass cutting level or height of the machine, said container is caused to rise or fall together with the casing or the cutting blades. However, in the case of riding mow-in machines driven by an operator sitting on the machine, the latter is usually of a comparatively more complex structure: the casing housing the cutting mechanism of the mowing machine is usually supported by the main frame of the machine. This main frame supports the driver, the guiding and advancing members, as well as the grass cutting and collecting member. Usually -the grass cutting 33~3:~L
Myers (blades and blade encompassing casing) are displaced very tidally to the ground, in such a way as to allow the adjustment of the cutting level, whereas all the other members, including the cut grass collecting container, are supported by the main frame and are not displaced as the operator adjusts the cutting level. In that case, the outlet mouth of the conveying duct, as formed in said casing, is arranged at the top or at the bottom, with respect to the inlet mouth of said cut grass collecting container.
A mowing machine may be used both when the grass is dry and when said grass is wet.
As moisture conditions of the grass change, also the working conditions change as well as the cut grass collecting con-dictions. Whereas a dry grass is easy to cut and collect, since the cut grass portions are held separated and hence are light, a wet grass is difficult to cut and collect. In fact, the cut grass portions or fragments are of a comparatively greater weight and accordingly they may be projected by the blades into the in-side of the collecting container. Moreover, the surface moisture causes grass agglomerates to be formed which are of great weight and may be only with difficulty conveyed to the collecting container.
The presently commercially available mowing machines operate under heavy working conditions, therein the conveyor, as formed in the casing of the machine, is obstructed by cut grass not projected into the inside of said cut grass collecting container. Thus, under such heavy working conditions, the operator is compelled to frequently clean the conveying duct of the casing. This manual intervention is an uncomfortable operation, mainly in the case of a mowing machine driven by an operator sitting on the main frame of the machine itself.
Accordingly, the present invention overcomes the above mentioned drawbacks by affording the possibility of emptying the cut grass conveying duct by means of an easy remote operation and Z I I
without any manual intervention by the mowing machine opera-ion.
husk the present invention provides such a mowing machine structure in which all of the components members thereof are rationally arranged and designed, thereby provide in a machine very safe for -the operator.
The present invention also provides a mowing machine with a cut grass collecting container having a very high come patting capacity, thereby reducing to a minimum -the number of emptying operations and accordingly accelerating the grass cutting work.
The present invention again provides such a mowing machine which is effective to prevent cut grass from accumu-feting on the ground.
According to the present invention there is provided a grass mowing machine comprising a frame, an engine supported by the frame, a casing having a lowermost edge and being sup-ported by said frame, said easing housing at least one grass cuttirly blade rotatable around an axis perpendicular to the I
round, said casing being open at the bottom and being in come monkeyshine with the cut grass, a conveyor duct for conveying the cut grass, said conveyor duct having an outlet and an enlarged cross-section at said outlet thereof, a vessel for collecting -the cut grass at the rear of said casing, said Yes-sol having an inlet, said vessel being located with its inlet at the outlet of said conveyor duct, the bottom portion of said conveyor duct being formed at least partially of a move able wall mounted at the lower portion of said casing at the rear and the top of said casing and being liftable towards the inlet of said vessel, said movable wall having a pyrometrically contour fitting said conveyor duct whereby said movable wall pushes grass in said conveyor duct into said vessel when said ~;~33~)3~
movable wall is rotated toward said inlet of said Bessel, and wherein said movable wall is located substantially at the level of said lowermost edge of said casing and being parallel to the ground whereby it closes said conveyor duct during the grass cutting operation, and is liftable to be arranged Verdi-gaily, in a tilted position, during the cut grass discharging operation, said movable wall being rotatable upwardly and rearwardly to said tilted position. Suitably the machine is operated by an operator, wherein said movable wall in its tilted position acts as a closure member for said outlet of said conveyor duct thus preventing the operator from axe-deftly accessing said rotating blade.
The present invention will be further illustrated by way of the accompanying drawings, wherein:-Fig. 1 is a schematic view illustrating a wheeled mowing machine provided for being driven by a walking opera-ion;
Fig. 2 illustrates a mowing machine to be operated by a sitting operator;
Fig. 3 illustrates the rear portion of the mowing machine ox Fig. 1 as the cut grass collecting container is removed therefrom;
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movable wall is rotated toward said inlet ox said vessel, and wherein said movable wall is located substantially at the level of said lowermost edge of said casing and being parallel to the ground whereby it closes said conveyor duct during the grass cutting operation, and is -liftable to be arranged Verdi-gaily, in a tilted position, during the cut grass discharging operation, said movable wall being rotatable upwardly and rearwardly to said tilted position. Suitably the machine is operated by an operator, wherein said movable wall in its lilted position acts as a closure member for said outlet of said conveyor duct thus preventing the operator from axe-deftly accessing said rotating blade.
The present invention will be further illustrated by way of the accompanying drawings, wherein:-Fig. 1 is a schematic view illustrating a wheeled mowing machine provided for being driven by a walking opera-ion;
Fig. 2 illustrates a mowing machine to be operated by a silting operator;
Fig. 3 illustrates the rear portion of the mowing machine of Fig. 1 as the cut grass collecting container is removed therefrom;
- pa -~233~
FicJ. illustrates the emptying operation or the collect-in container of the mowing machine illustrated in Fig. l;
Fig. 5 is a schematic cross-sectional view illustrating a mowing machine of the type of Fig. 1 to which there is applied the movable wall according to the present invention Fig. 6 is a perspective view illustrating the discharging mouth of the cut grass conveying duct;
Fig. 7 illustrates the mowing machine of Fig. 5 under the condition of maximum filling, with the cut grass arranged also in the discharging duct;
Fig. 8 illustrates the mowing machine of Fig. 7 after the tilting of the movable wall;
Fig. 9 illustrates the mowing machine of Fig. 7 with the cut grass collecting container emptied by raising its rear portion and with the formation on the ground of cut grass heaps;
Fig. 10 is a schematic view illustrating a mowing machine with a sitting operator, where the casing and the conveying duct are also illustrated in cross section; and Fig. 11 illustrates the mowing machine of Fig. 10 with the cut grass collecting container in a completely raised condition, for the discharging.
With reference to the above Figures the mowing machine according to the present invention comprises a casing 1, in the inside of which there are arranged grass cutting members which are operated or driven either directly or indirectly by an engine 2.
On the rear portion of said casing there is mounted a cut grass collecting container 3, which is located at the discharging mouth of said conveying duct. Over the casing a baffle member 4 may be arranged, which is effective both to hold in its position the container 3 and to protect the cut grass outlet mouth, as the con-trainer is disengaged. More specifically, the casing of the mowing machine driven by a walking operator is mounted on one or two front ~33~31 wheels 5 and on one or two rear wheels 6 which may be replaced by one or more rollers. A suitable handle 7 allows for driving said mowing machine. In case the mowing machine is operated by a sitting operator, the casing is usually suspended or supported on the main frame of the machine. Said main frame 8, supports the engine 2, the seat 9 and the driving members 10. The mowing machine is also provided with front wheels 5, which may be steered, and with one or two rear wheels 6, generally of the driving type. A suitable body 11 covers the engine and the operating or driving members. The cut grass collecting container 3 is articulated about an axis 12, err-angled in such a way as to permit the emptying operation, for example by operating a handle 13 associated with said container.
While on the mowing machine with a sitting operator the cut grass collecting container, usually of large and heavy structure, is generally fixed on the machine and articulated thereto in order to be discharged by a simple rotation, with a consequent raising of its rear portion, in a mowing machine with a walking operator the latter may select the way in which the collecting container will be emptied. In other words, the operator may disengage the container I prom the pin 12, possibly after having raised the baffle 4, the handle 13 facilitating that operation, as is apparent from Figure 3.
The hook members 14, applied on the container 3, act to accelerate that operation. It is also possible to raise the rear portion of the container, as held in position by the baffle 4, by causing it to pass through the handle 7. The hook members 14 facilitate the pivoting of the container about the pin 12, thereby assuring the rotation of the container itself (Figure 4).
A main feature of the invention is better illustrated in Figs. 5 to 11. These Figures show that the rotating blade 16 projects the cut grass outside of the casing into the conveying duct 15; the latter has a cross-section which increases and raises to-wards the discharging mouth, in order to facilitate the removal ~;~33~3~
, Cut grass. In -the prior art, the bottom portion of the conveyor is a free one or it nay be closed by a fixed wall. The main feature of the mowing machine according to the present invention is that there is provided a movable wall 17, which forms at least partially the lower or bottom portion of the conveying duct and is capable of rotating about an axis 18, on the rear and bottom potion of the conveyor 15. With such a structure, the rotation of the bottom portion of the conveyor will cause said movable walls to rotate upwardly and rearwardly, in such a way as to be located sub Stan-lo tidally vertically in the inside of the conveyor, at the discharge in mouth whereof, that is near the inlet mouth of the cut grass collecting container, as is illustrated in Figs. 5 and 6. The upwardly rotation of the movable wall 17 may be obtained in several ways. That rotation occurs before the disengaging of the container by the operator, or it is timed with the rotation of said container, in such a way that the rotating blade is prevented from projecting objects outside of the conveyor during the raising step of the collecting container. As it should be apparent, the timing system for timing the lower or bottom wall rotation and the mischarging of the cut grass collecting container does not pertain to the in-mention In fact, the invention simply provides for the arrange-mint of a movable wall which, as it is caused to rotate, is effect live to "clean" the conveying duct, thereby permitting the cut grass to be compacted in an optimal way in the inside of the collect-in container.
With reference to Figs. 7 and lo there is illustrated therein the operative condition owe -the cut grass collecting contain nor and of the casing of the mowing machine, respectively a walking operator mowing machine and a sitting operator mowing macho ire, as the collecting container is completely full and a portion of the cut grass has been accumulated in the conveying duct, that is at the time when the collecting container is to be emptied.
12330~1 Fly. schematically illustrates the condition of the cut grass collecting container of a walking operator mowing machine as, after having rotated the movable bottom wall according to the present invention, the container is ready to be disengaged from the mowing machine, in order to be emptied. It should be apparent that the grass which has been deposited in the conveyor, that is outside of the collecting container, is pushed, because of the rota-lion of the bottom movable wall, inside said container. The latter, accordingly, is capable of containing a larger amount of cut grass, thereby recovering cut grass which, in the conventional mowing machines, would have been left on the ground or in the conveyor, with a consequent requirement of carrying out a manual operation for removing it. Figs. 9 and 11 illustrate, schematically, the emptying condition of the collecting container of a walking opera-ion mowing machine and a sitting operator mowing machine respect lively, as the cut grass collecting container is discharged by up-warmly rotating the rear wall of the container in such a way as to leave on the ground heaps of cut grass. Also in that case, it will be apparent the advantage of the bottom movable wall accord-in to the present invention since the discharged grass is better collected and the conveyor will be devoid of any amounts of cut grass therein. Accordingly, the cut operation may be started again, after having emptied the container without the need of manually cleaning the conveying duct.
From the above, it should be apparent that the movable walls are capable of providing the mowing machine with great ad van-taxes, since the bottom movable wall of the conveying duct is held in such a position which is parallel or nearly parallel to the ground, during the operation, in such a way as to close the bottom portion of said conveying duct and collect that cut grass which is not capable of entering the collecting container. Moreover, at the end of the cutting operation, the operator may cause the 12~3~3~L
bottom movable wall to rotate about the articulated side whereof, in such a way that said-movable wall will be compelled to rotate rearwardly, thereby closing the outlet mouth of the conveying duct and, contemporaneously, the inlet mouth of the cut grass container.
It should be apparent that, owing to the rotation of said movable wall, a great part of the cut grass outside of the container will be pushed into said container and compacted therein, thereby emptying the conveying duct. At the end of its rotation the move able wall will be in a perpendicular or nearly perpendicular post-lion with respect to the ground. Such a characteristic improves the cut grass transfer towards said container. Simultaneously the discharging mouth of the cut grass conveying duct is closed by said movable wall thereby preventing any bodies susceptible to be pro-sent on the ground from being projected outside of the duct by the rotating cutting blade. The operator, moreover, is prevented from accidentally contacting the cutting blade. Obviously, a suitable coupling device will be provided to prevent the operator from taking up or rotating the Cult grass container before the conveyor movable wall has been rotated in a sufficient way to assure the closure of the discharging mouth of the conveying duct and the discharging of the grass collected therein. Thus, both the grass collection and the operation safety will be improved. In practicing the invent lion the used materials provided that they are compatible with the intended user as well as the contingent shape and size, may be anyone according to the requirements.
'rho present invention relates to a mowing grass cutting) machine.
As is known, there are commercially available several types of rotating mowing machines, which are provided with a drive in assembly operating, either directly or indirectly, one or more grass cutting blades, rotating about an axis substantially per pen-declare to the ground and, in some cases, also the device to cause the mowing machine to advance. These mowing machines are provided with a casing which houses, at the top and laterally, the cutting blade or blades. The casing also prevents the mowing machine operator from accidentally contacting the rotating blades, and pro-vents the rotating blades from projecting cut grass or other bodies on the ground in undesired directions. The casing is frequently provided with a conveying duct, for evacuating cut grass towards the rear of the mowing machine, in such a way as to afford the possibility of attaching a container for said cut grass at the out-let mouth of said duct. In a mowing machine operated by an operator walking behind the machine itself, the casing contacts the ground by means of three or four wheels or two rollers, or a wheel and I roller combination. In some types of mowing machines, wheels or rollers are also used for the advancing of the mowing machine, as driven by the engine. In such a case, the cut grass collecting container is usually coupled to the casing in such a way that, as the operator adjusts the grass cutting level or height of the machine, said container is caused to rise or fall together with the casing or the cutting blades. However, in the case of riding mow-in machines driven by an operator sitting on the machine, the latter is usually of a comparatively more complex structure: the casing housing the cutting mechanism of the mowing machine is usually supported by the main frame of the machine. This main frame supports the driver, the guiding and advancing members, as well as the grass cutting and collecting member. Usually -the grass cutting 33~3:~L
Myers (blades and blade encompassing casing) are displaced very tidally to the ground, in such a way as to allow the adjustment of the cutting level, whereas all the other members, including the cut grass collecting container, are supported by the main frame and are not displaced as the operator adjusts the cutting level. In that case, the outlet mouth of the conveying duct, as formed in said casing, is arranged at the top or at the bottom, with respect to the inlet mouth of said cut grass collecting container.
A mowing machine may be used both when the grass is dry and when said grass is wet.
As moisture conditions of the grass change, also the working conditions change as well as the cut grass collecting con-dictions. Whereas a dry grass is easy to cut and collect, since the cut grass portions are held separated and hence are light, a wet grass is difficult to cut and collect. In fact, the cut grass portions or fragments are of a comparatively greater weight and accordingly they may be projected by the blades into the in-side of the collecting container. Moreover, the surface moisture causes grass agglomerates to be formed which are of great weight and may be only with difficulty conveyed to the collecting container.
The presently commercially available mowing machines operate under heavy working conditions, therein the conveyor, as formed in the casing of the machine, is obstructed by cut grass not projected into the inside of said cut grass collecting container. Thus, under such heavy working conditions, the operator is compelled to frequently clean the conveying duct of the casing. This manual intervention is an uncomfortable operation, mainly in the case of a mowing machine driven by an operator sitting on the main frame of the machine itself.
Accordingly, the present invention overcomes the above mentioned drawbacks by affording the possibility of emptying the cut grass conveying duct by means of an easy remote operation and Z I I
without any manual intervention by the mowing machine opera-ion.
husk the present invention provides such a mowing machine structure in which all of the components members thereof are rationally arranged and designed, thereby provide in a machine very safe for -the operator.
The present invention also provides a mowing machine with a cut grass collecting container having a very high come patting capacity, thereby reducing to a minimum -the number of emptying operations and accordingly accelerating the grass cutting work.
The present invention again provides such a mowing machine which is effective to prevent cut grass from accumu-feting on the ground.
According to the present invention there is provided a grass mowing machine comprising a frame, an engine supported by the frame, a casing having a lowermost edge and being sup-ported by said frame, said easing housing at least one grass cuttirly blade rotatable around an axis perpendicular to the I
round, said casing being open at the bottom and being in come monkeyshine with the cut grass, a conveyor duct for conveying the cut grass, said conveyor duct having an outlet and an enlarged cross-section at said outlet thereof, a vessel for collecting -the cut grass at the rear of said casing, said Yes-sol having an inlet, said vessel being located with its inlet at the outlet of said conveyor duct, the bottom portion of said conveyor duct being formed at least partially of a move able wall mounted at the lower portion of said casing at the rear and the top of said casing and being liftable towards the inlet of said vessel, said movable wall having a pyrometrically contour fitting said conveyor duct whereby said movable wall pushes grass in said conveyor duct into said vessel when said ~;~33~)3~
movable wall is rotated toward said inlet of said Bessel, and wherein said movable wall is located substantially at the level of said lowermost edge of said casing and being parallel to the ground whereby it closes said conveyor duct during the grass cutting operation, and is liftable to be arranged Verdi-gaily, in a tilted position, during the cut grass discharging operation, said movable wall being rotatable upwardly and rearwardly to said tilted position. Suitably the machine is operated by an operator, wherein said movable wall in its tilted position acts as a closure member for said outlet of said conveyor duct thus preventing the operator from axe-deftly accessing said rotating blade.
The present invention will be further illustrated by way of the accompanying drawings, wherein:-Fig. 1 is a schematic view illustrating a wheeled mowing machine provided for being driven by a walking opera-ion;
Fig. 2 illustrates a mowing machine to be operated by a sitting operator;
Fig. 3 illustrates the rear portion of the mowing machine ox Fig. 1 as the cut grass collecting container is removed therefrom;
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movable wall is rotated toward said inlet ox said vessel, and wherein said movable wall is located substantially at the level of said lowermost edge of said casing and being parallel to the ground whereby it closes said conveyor duct during the grass cutting operation, and is -liftable to be arranged Verdi-gaily, in a tilted position, during the cut grass discharging operation, said movable wall being rotatable upwardly and rearwardly to said tilted position. Suitably the machine is operated by an operator, wherein said movable wall in its lilted position acts as a closure member for said outlet of said conveyor duct thus preventing the operator from axe-deftly accessing said rotating blade.
The present invention will be further illustrated by way of the accompanying drawings, wherein:-Fig. 1 is a schematic view illustrating a wheeled mowing machine provided for being driven by a walking opera-ion;
Fig. 2 illustrates a mowing machine to be operated by a silting operator;
Fig. 3 illustrates the rear portion of the mowing machine of Fig. 1 as the cut grass collecting container is removed therefrom;
- pa -~233~
FicJ. illustrates the emptying operation or the collect-in container of the mowing machine illustrated in Fig. l;
Fig. 5 is a schematic cross-sectional view illustrating a mowing machine of the type of Fig. 1 to which there is applied the movable wall according to the present invention Fig. 6 is a perspective view illustrating the discharging mouth of the cut grass conveying duct;
Fig. 7 illustrates the mowing machine of Fig. 5 under the condition of maximum filling, with the cut grass arranged also in the discharging duct;
Fig. 8 illustrates the mowing machine of Fig. 7 after the tilting of the movable wall;
Fig. 9 illustrates the mowing machine of Fig. 7 with the cut grass collecting container emptied by raising its rear portion and with the formation on the ground of cut grass heaps;
Fig. 10 is a schematic view illustrating a mowing machine with a sitting operator, where the casing and the conveying duct are also illustrated in cross section; and Fig. 11 illustrates the mowing machine of Fig. 10 with the cut grass collecting container in a completely raised condition, for the discharging.
With reference to the above Figures the mowing machine according to the present invention comprises a casing 1, in the inside of which there are arranged grass cutting members which are operated or driven either directly or indirectly by an engine 2.
On the rear portion of said casing there is mounted a cut grass collecting container 3, which is located at the discharging mouth of said conveying duct. Over the casing a baffle member 4 may be arranged, which is effective both to hold in its position the container 3 and to protect the cut grass outlet mouth, as the con-trainer is disengaged. More specifically, the casing of the mowing machine driven by a walking operator is mounted on one or two front ~33~31 wheels 5 and on one or two rear wheels 6 which may be replaced by one or more rollers. A suitable handle 7 allows for driving said mowing machine. In case the mowing machine is operated by a sitting operator, the casing is usually suspended or supported on the main frame of the machine. Said main frame 8, supports the engine 2, the seat 9 and the driving members 10. The mowing machine is also provided with front wheels 5, which may be steered, and with one or two rear wheels 6, generally of the driving type. A suitable body 11 covers the engine and the operating or driving members. The cut grass collecting container 3 is articulated about an axis 12, err-angled in such a way as to permit the emptying operation, for example by operating a handle 13 associated with said container.
While on the mowing machine with a sitting operator the cut grass collecting container, usually of large and heavy structure, is generally fixed on the machine and articulated thereto in order to be discharged by a simple rotation, with a consequent raising of its rear portion, in a mowing machine with a walking operator the latter may select the way in which the collecting container will be emptied. In other words, the operator may disengage the container I prom the pin 12, possibly after having raised the baffle 4, the handle 13 facilitating that operation, as is apparent from Figure 3.
The hook members 14, applied on the container 3, act to accelerate that operation. It is also possible to raise the rear portion of the container, as held in position by the baffle 4, by causing it to pass through the handle 7. The hook members 14 facilitate the pivoting of the container about the pin 12, thereby assuring the rotation of the container itself (Figure 4).
A main feature of the invention is better illustrated in Figs. 5 to 11. These Figures show that the rotating blade 16 projects the cut grass outside of the casing into the conveying duct 15; the latter has a cross-section which increases and raises to-wards the discharging mouth, in order to facilitate the removal ~;~33~3~
, Cut grass. In -the prior art, the bottom portion of the conveyor is a free one or it nay be closed by a fixed wall. The main feature of the mowing machine according to the present invention is that there is provided a movable wall 17, which forms at least partially the lower or bottom portion of the conveying duct and is capable of rotating about an axis 18, on the rear and bottom potion of the conveyor 15. With such a structure, the rotation of the bottom portion of the conveyor will cause said movable walls to rotate upwardly and rearwardly, in such a way as to be located sub Stan-lo tidally vertically in the inside of the conveyor, at the discharge in mouth whereof, that is near the inlet mouth of the cut grass collecting container, as is illustrated in Figs. 5 and 6. The upwardly rotation of the movable wall 17 may be obtained in several ways. That rotation occurs before the disengaging of the container by the operator, or it is timed with the rotation of said container, in such a way that the rotating blade is prevented from projecting objects outside of the conveyor during the raising step of the collecting container. As it should be apparent, the timing system for timing the lower or bottom wall rotation and the mischarging of the cut grass collecting container does not pertain to the in-mention In fact, the invention simply provides for the arrange-mint of a movable wall which, as it is caused to rotate, is effect live to "clean" the conveying duct, thereby permitting the cut grass to be compacted in an optimal way in the inside of the collect-in container.
With reference to Figs. 7 and lo there is illustrated therein the operative condition owe -the cut grass collecting contain nor and of the casing of the mowing machine, respectively a walking operator mowing machine and a sitting operator mowing macho ire, as the collecting container is completely full and a portion of the cut grass has been accumulated in the conveying duct, that is at the time when the collecting container is to be emptied.
12330~1 Fly. schematically illustrates the condition of the cut grass collecting container of a walking operator mowing machine as, after having rotated the movable bottom wall according to the present invention, the container is ready to be disengaged from the mowing machine, in order to be emptied. It should be apparent that the grass which has been deposited in the conveyor, that is outside of the collecting container, is pushed, because of the rota-lion of the bottom movable wall, inside said container. The latter, accordingly, is capable of containing a larger amount of cut grass, thereby recovering cut grass which, in the conventional mowing machines, would have been left on the ground or in the conveyor, with a consequent requirement of carrying out a manual operation for removing it. Figs. 9 and 11 illustrate, schematically, the emptying condition of the collecting container of a walking opera-ion mowing machine and a sitting operator mowing machine respect lively, as the cut grass collecting container is discharged by up-warmly rotating the rear wall of the container in such a way as to leave on the ground heaps of cut grass. Also in that case, it will be apparent the advantage of the bottom movable wall accord-in to the present invention since the discharged grass is better collected and the conveyor will be devoid of any amounts of cut grass therein. Accordingly, the cut operation may be started again, after having emptied the container without the need of manually cleaning the conveying duct.
From the above, it should be apparent that the movable walls are capable of providing the mowing machine with great ad van-taxes, since the bottom movable wall of the conveying duct is held in such a position which is parallel or nearly parallel to the ground, during the operation, in such a way as to close the bottom portion of said conveying duct and collect that cut grass which is not capable of entering the collecting container. Moreover, at the end of the cutting operation, the operator may cause the 12~3~3~L
bottom movable wall to rotate about the articulated side whereof, in such a way that said-movable wall will be compelled to rotate rearwardly, thereby closing the outlet mouth of the conveying duct and, contemporaneously, the inlet mouth of the cut grass container.
It should be apparent that, owing to the rotation of said movable wall, a great part of the cut grass outside of the container will be pushed into said container and compacted therein, thereby emptying the conveying duct. At the end of its rotation the move able wall will be in a perpendicular or nearly perpendicular post-lion with respect to the ground. Such a characteristic improves the cut grass transfer towards said container. Simultaneously the discharging mouth of the cut grass conveying duct is closed by said movable wall thereby preventing any bodies susceptible to be pro-sent on the ground from being projected outside of the duct by the rotating cutting blade. The operator, moreover, is prevented from accidentally contacting the cutting blade. Obviously, a suitable coupling device will be provided to prevent the operator from taking up or rotating the Cult grass container before the conveyor movable wall has been rotated in a sufficient way to assure the closure of the discharging mouth of the conveying duct and the discharging of the grass collected therein. Thus, both the grass collection and the operation safety will be improved. In practicing the invent lion the used materials provided that they are compatible with the intended user as well as the contingent shape and size, may be anyone according to the requirements.
Claims (5)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A grass mowing machine comprising a frame, an engine supported by the frame, a casing having a lowermost edge and being supported by said frame, said casing housing at least one grass cutting blade rotatable around an axis perpen-dicular to the ground, said casing being open at the bottom and being in communication with the cut grass, a conveyor duct for conveying the cut grass, said conveyor duct having an out-let and an enlarged cross-section at said outlet thereof, a vessel for collecting the cut grass at the rear of said cas-ing, said vessel having an inlet, said vessel being located with its inlet at the outlet of said conveyor duct, the bottom portion of said conveyor duct being formed at least partially of a movable wall mounted at the lower portion of said casing at the rear and the top of said casing and being tiltable towards the inlet of said vessel, said movable wall having a perimetrical contour fitting said conveyor duct whereby said movable wall pushes grass in said conveyor duct into said ves-sel when said movable wall is rotated toward said inlet of said vessel, and wherein said movable wall is located substan-tially at the level of said lowermost edge of said casing and being parallel to the ground whereby it closes said conveyor duct during the grass cutting operation, and is tiltable to be arranged vertically, in a tilted position, during the cut grass discharging operation, said movable wall being rotatable upwardly and rearwardly to said tilted position.
2. The mowing machine according to claim 1 which is operated by an operator, wherein said movable wall in its tilted position acts as a closure member for said outlet of said conveyor duct thus preventing the operator from acci-dently accessing said rotating blade.
3. The mowing machine according to claim 1, wherein when said movable wall is rotated to push grass in said con-veyor duct into said vessel and is rearwardly tilted, it is effective to compact the cut grass in said vessel.
4. The machine according to claim 1 further compri-sing a baffle member located above said casing and wherein said vessel is mounted at the top of said casing.
5. The machine according to claim 1, wherein said outlet of said conveyor duct, said cross-section of said con-veyor duct and said movable wall having substantially the same dimensions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000458338A CA1233031A (en) | 1984-07-06 | 1984-07-06 | Grass shaving machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000458338A CA1233031A (en) | 1984-07-06 | 1984-07-06 | Grass shaving machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1233031A true CA1233031A (en) | 1988-02-23 |
Family
ID=4128256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000458338A Expired CA1233031A (en) | 1984-07-06 | 1984-07-06 | Grass shaving machine |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1233031A (en) |
-
1984
- 1984-07-06 CA CA000458338A patent/CA1233031A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |