Патент USA US2412118код для вставки
Dec, 3, w46. E. R. BATTLEY ET AL 2,412,118 AUTOMATIC lTRAP FOR REFRIGERATOR CAR DRAIN PIPÉS Filed Jan. 26, 1945 ---____J 2,412,118 Patented Dec. 3, 1946 UNITED STATES PATENT OFFICEl v -AUTOMATIC TRAP FOR REFRI-GERATOR CAR DRAINPIPES EdwinvR. lìattley and George E.- McCoy, l Montreal, Quebec, Canada Application January 26, 1945, SerialNo. 574,789 2 Claims. 1 This invention relates to an automatic sealed trap for the liquid discharge pipe of a railway re frigerator car. The trap of the present invention is secured to the under side of the car floor in position to coact with the discharge pipe of the car, and to provide a water seal within the trap which serves to pre vent the ingress of air and heat to the interior of the car therethrough or egress of cold air from said car. The trap is so constructed as to maintain itself in normal sealing position but is adapted to be easily tilted to discharge the water therefrom when it is desired to clean the trap or bowl or car. (Cl. 182-8) 2 IU secured to the bottom of the bowl so -that said bowl and counterweight are fixedly associated to gether. The respective weightsv of the bowl and counterweight in relation to their distances from the hinge axis are proportioned so as to maintain the bowl by gravity only in closed or service posi tion, and, furthermore, when so desired, to main tain said bowl, by gravity, in open position. In the modification shown the counterweight 8 overbalances the weight of the bowl 4 and holds the bowl normally in closed position, as shown in full lines, but when the bowl is manually moved to open position, as shown in dotted lines, the center of gravity 9 of the counterweight 8 moves slightly over and beyond the center of the hinge B and overbalances the weight of the bowl 4 and holds the bowl in open position. It will b-e noted that in open position the center of gravity I2 of the bowl is practically below the center of the hinge. Furthermore, the axis of the hinge ex 20 tends preferably crosswise of the car. The principal object >of the invention is to pro vide such a trap wherein the bowl thereof is man ually movable from under said discharge pipe to a position where it will remain free and clear of said discharge pipe so that the latter may be Icon veniently cleansed when necessary. 1A further object of the invention is to provide Railway cars in service are violently moved in a counterweight for said bowl to automatically all directions due to coupling shocks, air brake hold the bowl in closed or service position. application, uneven track causing swaying of the A still further object is to so associate said car, etc., any one of which would cause the coun counterweight with the pivotal support of said 25 terweight, if inadvertently left in open position, bowl and pipe that said counterweight will, when to move back over the center of the hinge and' the bowl is manually moved to open position, au thence to closed position by gravity. In this ar tomatically maintain the bowl in said open posi rangement no manually operable latch is needed tion_ or required to hold the bowl in open position. In 30 And it is the ultimate object of the invention to y such installations- as are provided with a latch, provide such a trap wherein the bowl will be .auto if such latch were not released by the operator, matically released from open position by a service the bowl would remain in open position, thus movement or jar of the car, so that should said allowing cold air to escape from the car, or warm bowl be inadvertently left in open position it will air to enter the car through the open drain pipe. automatically return, when jarred, to service po 35 This, obviously is an undesirable situation which sition. the present invention is designed to overcome. Other objects and advantages of the invention , The axis of the hinge 6 preferably extends sub will appear in the following description thereof. stantially transversely of the car since the great Referring now to the accompanying drawing forming part of this lapplication and wherein like 40 majority and more forceful movements of the car are in a direction lengthwise thereof. reference characters indicate like parts: Furthermore, it is obvious that the bowl 4 may The drawing is a central vertical sectional view be manually moved to open position by simply of a refrigerator car discharge pipe showing my raising the counterweight 8 until it passes the improved trap as secured thereto. The lower end of a refrigerator car drain pipe 45 center 6 of the hinge, and that it may be re is shown 'at I as projecting downwardly from the turned, manually, from open position by moving bottom of the :car floor 2 for the drainage of mois said counterweight in the reverse direction over ture from the melting refrigerant, or other liquids said center when it will fall by gravity and thus from the car. swing the bowl under the discharge pipe. The sealing trap comprises a bowl 4 of circular 50 The accompanying drawing illustrates the pre or rectangular cup shape formation, which is ferred form of the invention, though it is to be hingedly attached, as at 6, to the drain pipe I or understood that the invention is not'limited to other partl of the car. To one side of the bowl 4 the exact details of construction shown and de a counterweight 8 is supported, it being formed upon the outer end of the laterally extending strap 55 scribed, as it is obvious that various modifications 2,412,118 ‘ 3 4 . thereof, within the scope of the claims, will occur to persons skilled in the art. We claim: 2. A trap for a refrigerator car having a. drain pipe to drain liquid out of the interior of the car; said trap including a. bowl and a counterweight 1. In a refrigerator oar having a drain pipe to ñxedly associated together, `and a hinge having drain liquid out of the interior of the car; a liquid 5 one part thereof ñxed to a car part and the other trap for the lower end of the drain pipe, said trap part thereof ñxed to said trap intermediate said including a bowl hingedly supported by a ñxed bowl and counterweight with the hinge axis ex car part at one side of the hinge axis, and a tending substantially transverselyof said car and counterweight `iixedly associated with said bowl so that said bowl may be swung to a position at the other side of the hinge axis so as to cause 10 surrounding the lower end of said pipe to provide said bowl to normally surround the lower end' of said pipe and provide a water seal therefor, the respective weights of the bowl and the coun-vr terweight in relation to their distances from the hinge axis being so proportioned as to maintain the bowl in said water sealing position by gravity, said bowl being movable to open position during which movement said counterweight passes to the other side of said hinge axis suiiiciently to over balance the weight of the bowl and thereby hold 20 the bowl in open position by gravity and when in said open position a slight movement of the car will jar the counterweight sufficiently to cause the bowl to :be moved by said eounterweight to water sealing position. a. water seal therefor and be held in said position by said counterweight, said bowl being swingable about said ' hinge axis to open position during which movement the center of gravity of said counterweight passes the vertical plane of the hinge axis sufficiently to overbalance the weight of the bowl and thereby hold said bowl in open position, and when in said open position a slight >movement of the car will jar the counterweight suiiiciently. to cause the bowl to be moved by said counterweight to water sealing position. EDWIN R. BATTLEY. GEORGE E. MCCOY.