CONVEYOR FOR STACKED BOTTLES Field of the invention This invention is related to conveyors that contain a plurality of layers of articles in stacked relation. More particularly, it relates to a conveyor of this type which is designed to accommodate bottles. Invention Background Cuff-shaped conveyors have been used for a long time to pack beverage containers and other items. To create a package, the upper and lower panel and the side panels of the conveyor are connected to form an open-ended sleeve configuration. The items to be packaged such as the beverage cans are loaded through one or both open ends so that their axes are parallel with the bottom panel and their ends abutted with the side panels of the conveyor. The end panels of the conveyor are also formed of fins connected to the ends of the sleeve. Conveyor-shaped conveyors have been most recently designed to hold two layers of beverage cans in stacked form as a more efficient way to pack larger numbers of cans. In this kind of installation, the cans are inserted into the conveyor sleeve with their axes parallel to the side panels, so that the lower ends of the cans in the lower stack are in contact with the lower panel and the upper ends of the cans in the top stack, abut the top panel. Once again, the end panels are formed of the fins connected to the ends of the sleeve. Although it may be more desirable to pack the beverage bottles in the same way, the contour of the bottles makes it difficult. In order to hold the upper stack of the bottles tightly in place, the tops of the end panels should be condense to the inside so that the necks of the end bottles are adjacent to each other. Difficulties have been encountered, however, in designing the fins of the end panel which will accommodate sshape while at the same time allowing the bottles to be held in place while the end panels are being formed. It is, therefore, a purpose of the invention to provide a conveyor capable of safely holding two stacks of bottles or other conical articles. Another purpose is to provide a conveyor of this type from which the end panels can be formed quickly and efficiently while the final bottles are held in place. Brief Summary of the Invention The invention makes use of a conveyor comprised of a top panel, a bottom panel, panels of opposite sides and opposite end panels connected together to form a fence. Each end panel is composed of two relatively longer end panel fins and two relatively shorter end panel fins, all the fins are connected in folded lines on the side panels. In addition, a fin of the upper end panel is folded connected to the upper panel and a fin of the lower end panel is folded connected to the lower panel. Each fin of the lower end panel is located above an attached large end panel fin and is externally inclined from the upper panel. The end panels are further comprised of the fins of the lower end panel by coating portions of the attached fins of the major end panel and the fins of the upper end panel, overlaying the portions of the appended fins of the major and minor end panels. To accommodate the conical portions of the upper end panel, the bent lines connecting the fins of the lower end panel to the side panels form an angle with the bent lines connecting the fins of the larger end panel to the side panels. Preferably, the fins of the major end panel further include an upper fin which is part of the inclined portion of the end panels. The fins of the lower end panel include an internal rest in which a portion of the attached fin of the major end panel extends. The rest is formed even to allow the fins of the lower end panel to be folded into place without the interference of a handrail of the machine which is used to hold the end bottles in place during the folding process. The fins of the major end panel are even preferably provided with bevelled panels which better fit the outline of the adjacent articles in the package. A transverse fold line may be provided on the side panels to form coniferous tops on the side panels as well as on the end panels. The measurement is even made for a strap handle adapted to lie flat on the top panel so as not to interfere with the stacking of the shipping conveyors. The conveyor is structurally sound and can be economically formed, making it practical to pack more than one layer of bottles or other items on the conveyor. These and other features and aspects of the invention, as well as other benefits, will be readily determined in the detailed description of the preferred embodiments described below. Brief Description of the Drawings FIG. 1 is a pictorial view of a sleeve-shaped conveyor of the present invention; FIG. 2 is a longitudinal profile view taken on line 2-2 of FIG. 3; FIG. 3 is a side view of the conveyor of FIG. 1 / FIG. 4 is a partial profile view taken on line 4-4 of FIG. 1; FIG. 5 is a view of the plane of a performa to form the conveyor of FIG. 1; FIG. 6 is an enlarged view of the plane of the area within the circle 6 of FIG. 5; FIG. 7 is a pictorial view of an open-end conveyor in the process of loading with bottles; FIG. 8 is a final partial view of the conveyor shown in relation to the guide rail of the packaging machine on a provisional platform of the conveyor formation; FIG. 9 is a cross-sectional profile view along a guide rail of the machine, showing the relationship between the rail and the lower open end fins of the conveyor; FIG. 10 is a partial enlarged view of the upper plane of the conveyor of FIG. 1, with part of the belt handle removed; FIG. 11 is an enlarged partial cross sectional view through one end of the strap handle, showing the strap in use; FIG. 12 is a pictorial view similar to that of FIG. 1, but showing a modified conveyor; FIG. 13 is a longitudinal profile view of the conveyor taken on line 13-13 of FIG. 12; and FIG. 14 is a view of the partial plane of the performa to form the conveyor of FIG. 12. Detailed Description of Preferred Incorporations Referring to FIGS. 1 and 2, the package 10 is composed of the sleeve-shaped conveyor 12 adapted to contain two layers of bottles B. In the illustrated package, the bottles in the upper layer are aligned with the bottles in the lower layer and are separated from them by a sheet or by a sheet or pad S, with the upper ends of the bottles in the upper layer bumping the upper panel and the lower parts of the bottles in the lower layer abutting the bottom panel. Each layer is made of three lines of four bottles each, so that the package contains twenty-four bottles arranged in two stacked layers. As best shown in FIGS. 1 and 3, the conveyor includes a top panel 14, side panels 16, end panels 18 and bottom panel 20. The fins of the upper and lower end panel 22 and 24, which are folded connecting to the upper and lower panels, respectively, they are glued to elongate the fins of the major end panel 26 to form the end panels. The fins of the major end panel 26, which is located on the center line of the conveyor, are connected to the side panels by means of folded lines 28 and includes folded lines 30 spaced from and parallel to the folded lines 28. The spaces between folded lines 28 and 30 form beveled panels 32 which allow the corner areas of the conveyor to conform more closely to the contour of adjacent bottles, as illustrated in FIG. 4. Even the formed part of the end panels are smaller end fins 34 which are connected to the side panels along the folded lines 36 and which are explained in more detail below their functions. The side panels even include a reference line 38 extending between the intersections of the fold lines 28 and 36. A load handle 40 connected at the ends of the top panel serves as a handle for the conveyor. As shown in FIGS. 1 and 2, the upper and lower panels are of the same width, so that the side panels are recharged in an essentially vertical plane. As shown in FIGS. 1 and 3, the length of the lower panel is larger than the length of the upper panel, causing the fins of the upper end 22 to extend at an angle, approaching the angle between the drum and the necks of the adjacent bottles, allowing from it to the end panels follow more closely to the contour of the end of the bottles in the upper layer. The top or end caps of the bottles are, in this measure, adjacent to the ends of the upper panel. With reference to FIG. 5, the performa 42 for forming the conveyor is composed of cardboard or other material having sufficient strength and flexibility to be folded into place and to function as a material of the conveyor. The lower panel section 20 is connected on opposite sides by means of folded lines 44 to sections of the side panel 16, one of which is at the end of the performa and the other of which is inside the performa. The interior of the section of the side panel 16 is connected by means of a folded line 46 to the section of the upper panel 14, which is in turn connected by the folded line 48 to the attached flap 50. The fins of the end panel they are connected to the ends of the lower panel section 20 by means of folded lines 52. The fins of the end panel 22 are similarly connected to the section of the upper panel 14 by means of folded lines 54. A relatively parallel short cuts 56 in the opposite ends of the upper panel section 14 cross the folded lines 54 and extend on the fins of the end panel 22 as diverging cuts 58. Each cut preferably terminates at an arcuate end to resist tearing. Parallel and spacing at a short distance from each folded line 54 is folded line 60, which extends between the pair of adjacent cuts 56. The purpose of the folded line and the cuts is explained more fully below. The fins of the major end panel 26 are connected to the sections of the side panel by means of folded lines 28. A fin extension 64 is connected to each fin of the major end panel 26 by means of the folded line 62. As shown in FIG. 6, the fin extensions include edges 70 and 72 which are spaced from and parallel to the # s edges 66 and 68, respectively. The fin of the lower end panel 34 is separated from the fin of the major end panel 26 by means of the cut 74, which is aligned with the folded lines 38 and 62. The diagonal edge 76 of the smaller fin 34 extends to a small edge 78 aligned with the fold line 30. The outline of the fins of the lower end panel 34 causes the fins to be spaced from the fin extensions 64. It will be noted that the fold lines 36 that connect the fins of the fin panel The lower end 34 to the sections of the side panel 16 form a negligible angle with the fold lines 28 and 54. The fold lines 54, therefore, while parallel to the fold lines 28, are not aligned with them. To form a conveyor from the performa, the upper, lower and side panel sections are folded along the fold lines 44 and 46 to form a rectangular sleeve configuration and the rubberized tape 50 is adhered to the side panel section opposite folded 16 to secure the structure in place. Normally, the sleeves thus formed are sent in a collapsed form to a packing plant where the sleeves are erected and the manufacturing process continues. Then two layers of bottles are introduced through an open end of the upright sleeve, as schematically illustrated in FIG. 7. It will be understood that the fins of the end panel are held in an open position during the introduction of the bottles by the well-known packing elements of the machine, which are not shown. The bottles are stacked as described above, with the separating sheet S between the two layers. The sheet S preferably includes a tongue T which is useful in several aspects. Instead of the bottles of the upper layer being slid to a place on one edge of the sheet, they are slid over the tongue fold, avoiding by this the possibility of the bottles being obstructed by the edge and overturned. while they are moved to their place in the sheet. The tongue also facilitates the handling of the sheet and provides extra rigidity to the conveyor if the tongue is adhered to the adjacent end panel. After the bottles are inserted, the fins of the major end panel 26 are folded and the lower end fins 24 are glued to them. Then, the lower end fins 34 are folded into place, after which the fins of the upper end panel 22 are unfolded and glued to the major and minor fins. During this process, because the bottles are packaged tightly, the end bottle in the middle row tends to be squeezed while the end panels are formed. To prevent this from occurring, a guide rail of the machine R, shown in FIG. 8, is provided to stop the bottles against an external movement prior to the pivoting of the flap of the upper end panel 22 in position. It will be understood that the fin of the upper end panel 22 is folded into place at a location in the packaging machine only downstream of the end of the guide rail so that the guide rail does not interfere with this operation. As illustrated in FIG. 9, the recess in the fins of the lower end panel 34 provided by the cuts 76 and 78 allows the fins 34 to clear the guide rail while being folded to its final position, thus allowing the guide rail to continue stabilizing the bottles of the end during this phase of the end panel formation process. As noted above, the fold line 36 connecting the fins of the lower end panel 34 to the side panel 16 forms a negligible angle with the folded line of the major end panel 28 so that it is angled insignificantly from the vertical. This aids in the ability of the fins of the lower end panel to assume an angular relationship with the upper panel 14, as required by the angled upper portions of the end panels, outwardly. Because the fins 64 are connected to the fins of the major end panel 26 by the fold line 62, they are also able to follow the angled contour of the upper portions of the end panels. The additional recess portion of the fins of the lower end panel 34 formed by the cuts 70 and 72 allow the fins of the lower end panel to be folded in place without interference from the fins 64 of the fins of the end panel higher. Although the side panels 16 are substantially vertical throughout, the reference line 38 allows for flexibility in the side panels in the adjacent area of the bottle crowns in the outer row during the loading of the bottles. After the conveyor has been formed, the belt handle 40 is applied. As shown in FIGS. 1-3, the belt is essentially the same length as the conveyor and is lying flat against the top panel. This measure allows the conveyor to be stacked to ship without the interference of the belt. As shown in FIG. 10, the ends of the tape are glued to the portion of the top panel placed between the fold line of the top panel 54 and the short fold line 60. While the strap handle is raised when it is used to lift the conveyor, the ends of the tape are caused to move towards each other, which is possible by means of the cuts 56 and 58 and by means of the short fold line 60. FIG. 11 shows this process, wherein the portions of the end panels between the cuts 58 are forced internally, the portions of the upper panel between the cuts 56 are forced upward and the fold line 60 allows the portions of the upper panel to be adjusted at the new angle of the ends of the handle. Another embodiment of the invention is indicated by the reference numeral 80 in FIGS. 12 and 13, where as in the numerical references of those used in connection with the first incorporation, denote similar elements. The side panels 16 of the conveyor include an upper bevelled panel portion 82 connected to the vertical portion by means of fold lines 84. This allows the lateral edges of the upper panel to lie adjacent to the upper parts of the B bottles to hold more tightly to the bottles instead. The angled upper portions of the side panels are, in this manner, consistent with the angled upper portions of the end panel to provide a conical configuration in both the end panels and the side panels. The performa from which the conveyor is formed is similar to the space of FIG. 5, except for two modifications, which are shown in FIG. 14. In the modified performa 86, the upper panel section 88 is narrower than the section of the performa of the upper panel of FIG. 5, as explained above. Even, the portion of the beveled panel shown in FIG. 14 includes a reference line 90. Due to the narrower upper panel section, when a flat collapsed conveyor is formed, it is not possible to bend the performa over the fold line 46, as in the case of the first embodiment embodiment , while the flap stuck 50 after can not reach the other end of the folded performa. By folding the performa on the reference line 90, the folded flap can be adhered to the other end of the folded performa as in the first embodiment to form a flat collapsed conveyor. This reference line is an operational reference line only, in that it is used as explained, but it does not work as a fold line on the conveyor. It is merely present in the straight beveled portion of the conveyor, as shown in FIG.12, after the bevelled portion has been formed by crease lines 84 and 46. The reference line does not decrease the conveyor force while the bottles enter tightly into the conveyor, as described above, not giving opportunity to the bevelled portion to be folded over the operating reference. The invention allows the bottles to be packaged in two layers in the conveyors, which can be formed with either a two-sided conical configuration or four capacitated sides for tightly holding the bottle layers in place. In addition, the incorporation has been made to hold the upper part of the bottles in the middle row during packaging without interfering with the ability to provide conical top end portions. Obviously, even though the invention has been described in