the grain extracting machine disclosed in present invention is distinguished among all the machines of this kind , for the novel and special combination of means constituting the command transmission from the pulling tractor . this refers to a mechanic transmission distinguished by the simplicity of assembly , which clearly simplifies the installation , repair and maintenance . therefore , the invention transmission recurs to the use of a gear box which is disposed adjacent at the bottom of the silage bag , with the particularity that the exit axis for the transversal endless rollers and the axis of the lifting roller , are disposed substantially co - planar to the vertical plan , which gives the security that the grain mass that is swept by the lateral endless rollers will be effectively taken by the vertical lifting roller centrally arranged . on the other hand , taking into account said lower disposition of the above mentioned transmission box , it has been achieved that the endless transversal rollers work practically adjacent to the bottom of the bag , thus assuring that the sweep is total without damage to the grains and the body of the bag . therefore , the invented machine shows an entry axis specially conceived to take the movement coming from the tractor , disposed on the way at a substantially vertical beam which maintains the same slope as the body of the vertical lifting roller . through said frontal beam runs an uplift chain which brings the movement to a main transmission axis included in an enlarged structural frame which integrates the chassis of the machine , which extends to a lateral side of the body of the above mentioned vertical lift or chassis where it is associated to the second lowering chain extending to the transmission box which is centrally placed , at the lower extreme , adjacent to the bottom of the bag , in correspondence with the front face of the machine . said transmission box , resting on sliding skates , is distinguished because it has both lateral coupling exits with the above mentioned endless transversal rollers , duly aligned and at the same vertical plan than the exit axis which is coupled with the vertical lift , which , at its turn , keeps the same degree of slope . it is clear that this way it has been notably simplified the transmission of command movement to the endless rollers , specially , as regards the individual chain systems required for the movement of the rollers and the central elevator which discloses said patent application p 090100056 . it can be said that with the shovel of this invention the integral work of the machine is accelerated , since with the same work there is an increase of the caudal of grains conveyed to the discharge . likewise , given the inferior and transversal placement of the shovel , any deviation in the rolling up of the bag does not affect the work of grains discharge since the shovel acts as a pusher frame which generates the displacement of them to the transversal endless rollers . due to the external and inferior position , the invented shovel is contacted with the body of the bag preventing the formation of sectors receptors of grains , which are apart from the scope of action of said sweeping endless rollers . in order to take the above mentioned advantages of use and functioning , the shovel of this invention includes a structure , preferably tubular , rigid and light , rectangular shaped with a dimension equivalent to the transversal space occupied by the sweeping endless rollers . on said structure , there appears a substantially rectangular flat plate , which may be of steel or plastic material , which defines the active front of the shovel , foreseen to be exteriorly supported on the silage bag in its inferior part , without any damage . its specific function is to assure that the bottom of the bag is always where the above mentioned transversal sweeping endless rollers work . said pusher transversal plate , is mounted on a sliding and central frame which is projected from a support fixed to the chassis of the machine in a lower sector below the rolling rod of the bag . finally it is noted that said sliding frame is associated to the plumber of a hydraulic cylinder which is operated by the worker to increase or reduce the pushing pressure which is carried out with the invented shovel and therefore the worker regulates the positioning according to the operating needs that show up . no currently known machine extracting grains from storage bags propose , or even suggest the constructive solution which arises from the above paragraphs , reason for which this is a proposal that , besides of being novel , has a clear inventive activity . in order to achieve the above mentioned advantages , to which users and those skilled in the art may add many others , and in order to facilitate the understanding of the constructive , constitutive and functional features of the invented machine , a preferred embodiment example is described below which is shown , schematically and without a determined scale , on the enclosed drawings , with the express nota that , precisely , for being an example , they should not be used as limitative or exclusive of the scope of the invention , but it is simply explanatory and illustrative of the basic conception thereof . fig1 is a perspective view that shows the extracting machine of this invention , in its general assembly aspect , shown from the back linked to the tractor . fig2 is an enlarged detail , in perspective , that shows the download of the command transmission to the gear box which is placed at the lower and central sector of the same extracting machine . fig3 is a front view of the same machine of the above figures , where the lower extracting head is distinguished . fig4 is a perspective view of the transmission box chosen for the installation set forth by the extracting machine of this invention . fig5 is a widened detail of the lower and front sector of the same machine as the above figures . fig6 is a perspective view that shows the same extracting machine as previous figures , in this case incorporating a lower pusher shovel to be arranged exteriorly , supported on the silage bag which is being rolled up . fig7 is another perspective view , similar to previous figure , included to appreciate from another side the same inferior pusher shovel . fig8 is a lateral view of the same extracting machine of previous figures . fig9 is a widened detail , in perspective , showing the assembly of the pusher shovel associated to the sliding frame supporting same . fig1 is a widened detail of the pusher shovel observed from its main active side . fig1 is a lateral widened detail of the same pusher shovel of the two prior figures . it is noted that , in all figures , same numbers and reference letters , apply to same or equivalent parts or elements constituting the arrangement , in agreement with the example chosen for the present explanation of the invented extracting machine . as shown in fig1 , the extracting machine of dry grains stored in silage bags referred to in the present patent of invention , is formed by a chassis ( b ) mounted on wheels ( 1 ) and ( 2 ), belonging to the type which use a transversal rotating roll , not shown , which function is to roll up the silage bag as the grains it stores are extracted . therefore , a feeding and discharge head ( c ) is used conceived to be placed inside the bag such that as it is being rolled up grains are extracted . therefore , this head includes both endless transversal rollers ( 3 ) and ( 4 ) which work in the interior of the bag , adjacent to the bottom , in a simultaneous and coordinated way with a vertical lifting roller ( 5 ) which begins in said head and is projected outwardly . in fact , observing fig1 it is appreciated that said vertical lifting roller ( 5 ) is a big tubular body which is centrally projected from the lower adjacent end to the bottom of the bag , keeping certain inclination to a lateral side of the machine . likewise , as specially shown by fig3 and 5 , the above mentioned endless transversal rollers ( 3 ) and ( 4 ) will be locked by a respective lattice cover ( 6 ) and ( 7 ) formed from the ring supports applicable to the corresponding long rods , conceived to slid on the internal surface of the bag , thus avoiding damages and therefore unwanted grain leakage . as stated above , the extracting machine of the present invention , is especially distinguished by the particular design and assembly achieved in the mechanic command transmission from its coupling to the exit from the tractor . in fact , if we observe fig1 , we see the entrance axis ( 8 ) which is to be coupled to the cardan transmission which extends from the tractor , which is associated to an upward chain ( 9 ) mounted on the back beam , smaller in height and with the same slope as the body of the lift ( 5 ). said upward chain ( 9 ) is coupled , at the top , with an end of the horizontal main axis of transmission ( 10 ) which extends , keeping an elevated height , to the above mentioned body of the lift ( 5 ) to be associated , on the other end , to the downwards chain ( 11 ) which allows for the movement to the transmission box ( 12 ) place at the bottom of the machine , adjacent to the bottom of the bag . as shown in fig1 and 2 , this downward chain ( 11 ) is mounted on the external face of said body of the lift ( 5 ) this way assuring the same slope is kept . the described transmission from the inlet ( 8 ) to the lower transmission box ( 12 ) is distinguished because it is easily accessibly mounted , this way it is simple to be installed and maintained . now observing fig3 , 4 and 5 it is possible to understand the location and disposition of the above mentioned lower transmission box ( 12 ) from the exit of the corresponding commands ( 13 ), ( 14 ) and ( 15 ) transmitting the movement to the transversal rollers ( 3 ), ( 4 ) and vertical lift ( 5 ), through which two advantage aspects are assured for the functioning of the extractor , i . e . : first , the placement adjacent to the bottom of the bag , on which the above transversal rollers ( 3 ) and ( 4 ) are placed , thus assuring that the sweep is total and effective , whatever the volume of the grains in the interior is . second , it is noted that both rollers ( 3 ) and ( 4 ), and the lift ( 5 ) are placed on the same vertical plane , thus assuring a higher functional efficacy since the mass of grains conveyed by the rollers is always oriented to the central sector where the lifting roller is efficiently working . now observing the transmission box which is represented in fig4 , it is possible to appreciate said second advantageous condition , as mentioned above , since that shows at the exits ( 13 ), ( 14 ) and ( 15 ) which are co - planar among them as regards the same vertical plan . in said fig4 it is also shown the entry axis ( 16 ) transmitting the movement which is projected from the coupling with the lower end of the above mentioned downward chain ( 11 ), as well as the sliding skates ( 17 ) for support on the bottom of the bag . likewise , fig5 shows that said transmission box ( 12 ) is fixed to the lower sketch of the body of the vertical lift ( 5 ) by means of a mounting bridle ( 18 ). in fig6 , 7 and 8 , it is also appreciated that from the inferior beam ( 21 ) which is part of the chassis of the machine , a long - shaped support ( 22 ) is centrally projected , which , at its free end , project a sliding frame ( 23 ) which bears the transversal plate ( 24 ) which constitutes the pusher shovel of this invention . as specially shown in the widened detail of fig9 , in a preferred embodiment the shovel of this invention includes a tubular frame ( 25 ) which supports a flat and totally smooth plate as it should not damage the body of the bag on which it rests and pushes . said planar plate ( 24 ) may be made of steel or a plastic material which is smooth and resistant without grooves or roughness . on the same tubular support ( 22 ) the free end of the sliding piston rod ( 23 ) is fixed , which , in a preferred embodiment , is placed telescopically , in the inner part of said elongated support ( 22 ), associated to the plumber of a hydraulic cylinder ( not shown ) which is oriented to the same longitudinal direction of the machine . this hydraulic cylinder may be operated by the worker performing the work who , through said resource , may regulate the pushing pressure to be performed by the shovel on the body of the bag as a function of the need of each moment , so that , in the interior of the bag the mass of grains to show up , may be taken efficiently by the transversal sweeping endless rollers ( 3 ) and ( 4 ). as shown in fig9 , 10 and 11 , in a preferred embodiment , the pusher hydraulic cylinder may be placed inside the above mentioned hollow and long - shaped support ( 22 ), which is fixed to the chassis through the flaps ( 26 ) and ( 27 ). as noted above , the plumber of said hydraulic cylinder associated with the sliding piston rod ( 23 ) is in charge of transmitting and operating its longitudinal displacements . the invention contemplates a planar plate ( 24 ) which constitutes the shovel of this invention to be disposed in a fixed manner to the free end of the piston rod ( 23 ), or either articulated , so that a higher possibility to be adapted to deformations to be adopted by the body of the silage bag when it is rolled up on the rolling rod ( 20 ) can be achieved .
an extracting machine has a transverse roll that rolls a silage bag up as grains stored therein are extracted , to be discharged to a hopper truck . an extracting head placed in the interior of the bag has a lifting auger centrally arranged at the bottom thereof , and transverse augers extending to both sides move the grains to the lifting auger , which elevates and discharges them . a central transmission box supported at the bottom of the bag has plural output shafts extending in different directions , lying in a single vertical plane , and coupling to , respectively , the transverse augers and the lifting auger . a pusher shovel extending transversely the width of the bag has a hydraulically - adjustable transverse plate .