SAFETY ARM OF LIFTER OF COUPLER ALLIANCE DESCRIPTION OF THE INVENTION: The present invention refers to couplers of railway carriage and particularly to rotary couplers of the Alliance type. More specifically, a bolt apparatus is provided to prevent loosening displacement of the coupling mechanism especially in the inverted position of the coupler and the rail car during unloading of the load of the rail car. Railway carriage couplers are used to connect adjacent railcars. These couplers are found in freight cars and passenger cars, the couplers of the loading trucks include coupling devices for articulated connectors and rotary dump style couplers. The couplers generally include a coupler head, a hinge and a
• Hinged pivot pin together with an internal mechanism with a locking arrangement and rotary locking lift. The internal mechanism is operable to move the hinge to an open position. The coupling assembly of the rotating drop style, or rotating couplers is inverted along with the rail car or wagon during the operation of
-discharge 'load. In the Association of American Railroads (AAR) the approved rotating bolt couplers, a latch arrest mechanism can be used within the box or coupling head to prevent inadvertent release of the lock due to the hitch launcher movement. However, in the coupler head AAR, the size of the mechanism and the head provide a space or volume of internal cavity suitable to accommodate a relatively large stop-latch apparatus, as well as the space needed to operate such an apparatus. In the Alliance style rotary striker couplers, the cavity working space for the internal mechanism is both narrow and limited, and as a consequence, the AAR latch apparatus can not be used within the coupler head. It is known that the external conformation of the Alliance coupler head is different from the coupler head AAR, and that the internal cavity for the Alliance head does not have the same size or configuration as the internal AAR cavity. Both styles of couplers include anti-slip devices to prevent inadvertent uncoupling by coupler actions during normal operation up the wagon and the coupler. Upon entering the wagon to a flushing or unloading station, the wagon is rolled to an upward rotation, rotating around its front rotary coupler while the opposite or fixed rear coupler rotates with the wagon. Under these operating conditions, AAR type E or type F couplers should not be uncoupled when rotating, but uncoupling has occurred inadvertently. The prevention of such inadvertent release of a coupler is attempted to be remedied by the incorporation of several locking safety devices within a coupler head. These locking safety devices are used to limit the movement of the lock and thereby keep the hinge in a locked position when the coupler has been reversed. In a stopped position of the coupler, the locking safety devices allow normal operation of the coupler. A device for preventing the coupler from unlocking is presented in US Pat. No. 1, 612,775 for a type D coupler, now obsolete. Similarly, an anti-unlocking device for an AAR type F coupler is presented in US Pat. 3, 433, 369 to Metzger. A double-latch, anti-unlock device is provided in U.S. Patent 4,172,530 to Altherr. However, all such assemblies are not suitable or appropriate for the limited internal space of the Alliance coupler. The present invention provides a locking lifter latch operator for fixing the locking lifter, and consequently the coupling hinge, during the unloading of inverted load of a wagon with a rotary coupler. The latch provides a positive mechanism for keeping the hinge pin and the lock lifter in the locked position during the rotation of the car and the coupler to the inverted position. The latch in the cavity of the coupler head is connected to the upper end of the locking lifter and is pivotable about a pin, which allows the free rotation of the pin to extend from the end of the locking lifter to make mechanical contact with the upper wall of the latch. The cavity. The extended arm that nests against the upper wall inhibits the movement of the blocking lifter and consequently, of the hinge pin and the hinge itself. Therefore, the hinge remains in the safe and locked position during the inversion of the wagon and the coupler. DESCRIPTION OF THE DRAWINGS In the different Figures of the drawing, the same reference figures indicate equal components, in sample: Figure 1 a side elevation view in a partial cross section of an Alliance coupler standing with the hinge and lock in position blocking; FIG. 2 is a side elevation view in a side elevational view in a partial cross section of an Alliance coupler with an upward orientation with the hinge and lock in the open position. Figure 3 is a side elevation view in a partial cross section of the Alliance coupler as shown in Figures 1 and 2, with the lock partially open and the bolt extended to inhibit the lock from unlocking; Figure 4 is an elevation view of the one-piece blocking lifter as seen in figures 1 to 3; Figure 5 is a side view of the locking lifter shown in Figure 5; Figure 6 is a side view of the blockage of Figure 1; Figure 7 is a rear view of the blockage in Figure 6 taken along line 7-7 in Figure 6; Figure 8 is a side view of the hinge in the
Figure 1; and Figure 9 is a top view of the hinge in Figure 8, taken along line 9-9 in Figure 8. In Figure 1, a dump rail car coupler-rotary with head 10, body 11 and internal cavity 12 is shown in a partial cross section. The locking lifter 14, the lock 16, the vertical locking dislocator 18 and the latch 20 are positioned and operate in a cavity 12. The hinge 122 at the first or front end 24 of the coupler head 10 is noted in the engaged position or of blocking. In Figures 1-3, the hinge 22 is arranged vertically approximately centrally about the longitudinal axis of the coupler 26. The coupler 10 is connected to a coupling rear end 33 to the gear throw system 17, and the shaft of the coupler 26 it is generally parallel to the longitudinal axis 13 of the car 15 in an assembled and reference position. The hinge 22 in Figures 2 and 3 has a rear pivot arm 30 with the pivot pin 32 shown in a dashed pattern and extending through the opening 34 in the rear arm or corner 30 for the pivotal operation of the hinge 22 between the open position not engaged and the closed position engaged. The internal locking cavity or chamber 12 includes the front wall 38, the rear wall 40 and the top wall 42 at the top of the coupler 21, whose cavity 12 has a volume for receiving the lock 16, the blocking lifter 14, at lock dislodger or lock 18, to the latch 20 and to the rear arm of the hinge 30. The lock lifter 12, the locking dislodger 18, the latch 20 and the rotor 60 cooperate extensively to provide a lock lifter assembly 19. In Figures 1-3, the rear wall 40 is close to the top wall 42, which has an indentation 44 for receiving the latch 20 with the wall thickness 35 in Figure 5 in an inverted state of the coupler for securing the coupler 10. in a closed coupled state in such an inverted position. The lock or latch lifter 14 in Figures 4 and 5 has an upper end 50, lower end 52 and an elongated connector arm 54 with wall thickness 55 extending between the upper and lower ends 50, 52. The opening 56 in the lower end 52 receives the driving pin 58, which connects to the blocking lifter 14 to lift the locking of the rotor assembly 60, as seen in Figures 1-3. The rotor assembly 60 on the bottom d of the coupler 23 is rotatable to open or close the coupler 10 and includes a U-shaped arm 62 with cavities or passages 64 for receiving the pivot pin 66 for pivotal rotation of the rotor 60 between the position of opening and closing the coupler. An anti-drag bump 68 of a U-shaped arm 62 makes contact with the underside of the bulge of the coupler head to prevent excessive rotation of the rotor 60, thus preventing inadvertent uncoupling of the coupler 10. The upper end 50 of the lock lifter 50 includes a first closed recess 70 in the body of the upper end 50. A second U-shaped recess 72 is open in the upper part 71 of the locking lifter 14 to receive an arm or finger 74 of the closing bolt 18 In Figures 1-5, the cross pin 76 extends through the bore 78 in the upper end of the lifter 50 and the opening 80 in the bolt 20, allows pivotal rotation of the bolt 20 around the cross pin 76. A plurality of ramp or inclined surfaces on the upper surface 100 on the lower surface 102 of the lock 16 are seen in Figures 1-3-, but the surfaces 100 and 102 are shown in FIG. more clearly illustrate in Figures 6 and 7. In these figures the upper surface 100 has sloping and curved contours 104, 106, 108, 110, 112, and 114. Similarly, the lower surface 102 includes sloped and curved surfaces., 122, 124, 126. Sloped surfaces 104 to 114 on the upper surface 100 interact with the blocking lifter 14 and the puncher 8 during the release and opening operation of the coupling hinge 22. Surfaces with slope 120 to 126 of the lower surface 102 interact with the curved and cammed surfaces 132, 134, 136, 138, and 140 on the rear side 130 of the rear corner 30 of the hinge 22, curved surfaces shown in Figures 8 and 9. The interaction during the movement of the contact components 14, 16 or 18 and the upper slope related surfaces 104 to 114, and the sloping bottom surfaces 132 to 140, allow translation of the movement of the locking lifter 14, lifter 16 and of the puncher 18 to allow opening and closing of the coupling hinge 22, which is known in the art. In Figure 1, the coupler 10 is shown with the lock or latch 16, the hinge 22, the dumper 18 and the locking lifter 14 in the locked position. In this locking state of the coupler, the lower sloping surfaces 120 to 126 of the lock 16 are positioned below the sloped or cam-like surfaces 132, 134 and 136 of the hinge 22. The latch 20 in Figure 1 is in a reference position with the coupler 10 in its normal operating position for the locked coupler 25. In Figure 2, the blocking lifter 14 has been raised to engage and lift the lock 16 and the bollard 18, movement of the lifter 14 which moves and rotates the puncher 18 to an open position. The lock 16 also moves vertically upward to provide the lower surface 102 above the hinge surfaces 132, 134, 136 in Figure 2, which allows the hinge 22, and thus the coupler 10 to move to an open position . In this open position of the coupler, the upper surface 94 of the latch 20 contacts or is in the immediate vicinity of the upper wall or ceiling 42. The mechanical opening of the coupler 10 is generally made by the rotation of the rotor 60 to elevate the raised from block 14 with the lock 16 and subsequently moving the shuttle 18, which allows the uncoupling-opening of the coupler 10. This mechanical action of opening coupling, would be provided in the normal or reference orientation of the coupler 10 noted in Figures 1 a 3. The latch 20 as shown in Figures 1 to 3, has an elongated shape with opening 80 in the first end 82 and a lip or protrusion 86 in the second end 88, ends that are joined by the upper surface 94 that it has the longitudinal axis 95, axis 95 which is seen in Figure 4 and generally extends parallel to the axes 13 and 26. The latch or latch arm 20, as shown in Figure 5, is positioned pivotally in the slot 37 in the upper end 50 of the lifter with the pin 76 extending through the upper end of the locking lifter into its upper end wall thickness 39. This elongated shape of the pin 20 is noted at the edge in the Figure 5 wherein the thickness of the wall 35 of the latch 20 is less than the width or thickness of the wall 39 or 55 of the lifter 18. The lower edge of latch 90 extends from the second end 88 towards the first end 82 and intersects the lip 86 in the shoulder 92. The lip 86 has a second lower edge 91 that extends from the shoulder 92 to the first end 82. The latch 20 has a first face height 97 between the bottom edge 90 and the top surface 94, and a second one. face height 99 between the lower edge of lip 91 and the upper surface 94. The latch 20 is freely pivotable about the cross pin 76 in rotation about the longitudinal axis 26 of the coupler 25 and its united agon 15. When the latch 20 pivots on the cross pin 76, it extends vertically from and perpendicular to the axis 26, which allows the upper surface of the latch 94 to contact the rear wall 40 with the first end 82 contacting the recess wall 44, as seen in Figure 3. The latch 20 maintains the lower locking surface 102 in a vertical position down the sloping surfaces 132, 134, 136 of the hinge, in this illustration of the coupler 10 in Figure 3. This arrangement of the wall and sloping surfaces prevents rotation of the punch 18 and restricts movement of the lock lower surface 102 or lock 16 after the sloped surfaces 132, 134, and 36 of the hinge 22, which limits the movement of the hinge 22 and keeps the coupler 10 in the locked state. The lip 86 has a length greater than the arm length connecting with the pin 78, and the larger mass provides a mechanical mass for moving the arm 20 to the contact position of the bolt indicated in Figure 1 where the coupler is finds in the reference state. The illustration in Figure 3 shows the coupler 10 in the vertical stop position, although the latch 20 is normally operable with the coupler 10 in an inverted position. This example stop-by-example illustration in Figure 3 is provided to illustrate the relationship of positions of the different components with respect to the reference position indicated in Figure 1, and not as a functional limitation, the operation of the latch 20 is only it requires to hold the bolt lifter or lock 18 against movement to a position where the coupler is open. Therefore, a large mass latch 20 is not required to perform the necessary mechanical operation, the present invention provides ease of assembly and operation, low cost and mechanical blocking against inadvertent uncoupling of the coupler 10 during its inverted operation. Although this invention has been described in connection with a specific embodiment, it is to be understood that this is solely as an illustration and not limitation.