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July 2, 194.6. E. R. BATTLEY ET-AL‘ 2,402,980 _RAILWAY REFRIGERATOR CAR STRUCTURE Filed Jan. 26, 1945 2 Sheets-Sheet 1 a... INVENTORS . R zazumzzaazzzey BY 66021965106603, ' 5-5:; July 2, ‘1946; 2,402,980 E. R. BATTLEY ET AL RAILWAY REFRIGERATOR‘ CAR STRUCTURE ’ Filed Jan 2 Sheets-SheetZ 15 0 __._________|____._ ______L_ 29 J0 // /////v mccgq Patented July 2, 1946 ‘2,402,980 UNITED STATES PATENT OFFICE 2,402,980 RAILWAY REFRIGERATOR CAR STRUCTURE Edwin E. Battley and George E. McCoy, Montreal, Quebec, Canada Application January 26, 1945, Serial No. 574,791 14 Claims. (Cl. 62—17) 1 2 The invention relates to railway refrigerator cars used to transport commodities requiring refrigeration in transit and especially to such lation. Furthermore, wet insulation, of course, cars used for commodities necessitating a tem ported, which costs money. perature below thirty-two degrees during trans portation, such as frozen foods, which require twelve degrees or less. The invention is an improvement on Patent means water held by the insulation and this water adds to the weight of the car and must be trans As the brine has a temperature of zero or below and, therefore, has considerable capacity for heat absorption, it would be foolish to simply drain it outside of the car. It is the primary object of this invention to No. 2,136,999 of November 15, 1938 (called Top bunker car), wherein the refrigerant container 10 obtain the advantages of the air and liquid circu is located adjacent the roof and one of the side lating system, as de?ned in Patent No. 2,136,999, walls of the car, and a drip pan is located below supra, and at the same time, con?ne‘ the corro the refrigerant container to provide- an air cool sion to a relatively small number of ?ues and a ing space therebetween and wherein the air in relatively small part of the’ partition (drip pan) said space, being cooled by the refrigerant in the 15 thus materially reducing the maintenance cost of the refrigerator car, and increasing the length container, descends through ?ues associated with of time the refrigerator car remains in service the side walls of the car and thence into a space provided below the lading and being warmed by without removing the ?ues. Maintenance repairs the lading rises through the lading space to the also keep the car temporarily out of service. cooling space where the cycle is repeated. Wet 20 The con?ning of the corrosion is accomplished ice is used as the refrigerant when transporting in this invention by allowing the over?ow brine commodities requiring not less than forty-?ve from the tank and preferably also the brine from to ?fty degree temperature, and salt is used with the drain valve of the tank to contact only a very the ice to obtain brine when lower temperatures small part of the partition, and to flow through are required, the temperature of brine depending 25 only a very few of the vertical side wall ?ues. upon the amount of salt used—30# salt to 100# (Such small part of the partition and such few of ice producing brine at about six degrees tem ?ues will be protected as much as possible against perature. corrosion.) Thus the air ?owing over said part When brine is used as the refrigerant a solid of the partition and said ?ue is further cooled 30 or imperforate refrigerant container (or tank, by contact with the brine ?owing over such part of the partition and through such ?ues. as it is called) is used to retain the brine in the container so as to get the full bene?t of its heat The remaining portion of the partition and the absorbing capacity. Over?ow holes are provided remainder of the ?ues will be dry (except for a in said tank‘ to limit the amount of brine therein small amount of condensation) and, therefore, and allow air to circulate over the brine, and a 35 will not corrode. These are called dry ?ues and drain valve for cleaning the tank of debris and will be of relatively cheap construction. for‘ inspection is provided. It is a well known fact that salt in water accen As the wet ?ues and wet part of the partition are subject to corrosion we preferably design the associated parts of the car so that they are easily tuates corrosion of metal (particularly steel) in contact therewith, and experience has shown that 40 removable for inspection, cleaning, re-treating brine with heavy salt solution (concentration) and, if necessary, replacement. The removability causes considerable corrosion of the ?ues in the of these designedly wet parts decreases the time walls and of the drip pan of the top‘ bunker car, and labor necessary to inspect and/or repair the even though steel fines are galvanized. car. Other more expensive coatings have also been 45 So-called top bunker cars of the general de tried but still the- metallic ?ues corrode. Cor rosion, of course, partially eats away the steel and when the steel ?ue sheet becomes thin in 7 spots, the jolting and constant movement of the sign disclosed in Bonsall Patent No. 2,136,999, supra, are built with a series of brine refrigerat ing tanks near each side Wall of the car (four tanks on each side in a forty foot car) and a car in service finishes the job and makes holes 50 further modi?cation of the invention is to place in the ?ue sheet. Water or brine ?owing down the overflow holes and the drain valve in the the ?ue sheet passes through these holes into the ends of adjacent tanks and put the web part of insulation below the ?oor of the car and the the partition (i. e., the part intended to receive insulation of the side wall of the car. Wet insu over?ow brine and drain brine) below the space lation is less e?icient as insulation than dry insu 55 between» such adjacent tanks, and have the wet 2,402,980 3 4 part of the partition, as well as the cool air be tween the tanks, communicate with a wet ?ue in the adjacent side wall of the car. Such an ar rangement materially reduces the number of wet ?ues in the car, thus con?ning the corrosion to a very few ?ues and reducing initial cost and times, furthermore, covered with a coating highly maintenance. Other objects and advantages of the invention will appear in the following description thereof; Referring now to the accompanying drawings forming part of this application and wherein like reference characters indicate like parts: resistant to the corrosive action of the liquid from the particular refrigerant used. Notwithstanding such protective measures these ?ue sheets 25 cor rode much faster than other metal parts of the car without such protection. The sheet 25 is, therefore, preferably made in sections, since it is an object .of the invention to con?ne the over?ow and/or drain liquid from each tank to a certain ?ue only, and to accom plish this object there is shown a pair of vertical kerfs 29 within the inner faces of an adjacent pair of posts 28. The vertical edges of each ?ue sheet 25 are provided with outwardly extending 15 ?anges 30 which‘ ?t within said kerfs 29 and when the invention is employed. Figure 2 is a transverse cross sectional view on the inner sheathing 2| is in place, of course, said line 2—2 of Figure 3 at one side of a refrigerator ?anges cannot be removed from the kerfs. Con car through the hatch openings thereof showing sequently, when any ?ue sheet needs replacing the wet part of the partition, the over?ow holes, it may be removed independently of the others and drain plug from the tank as located under 20 by simply ?rst removing the inner sheathing. the hatch. ‘ A partition is shown at 35 which‘ is positioned Figure 3 is a cross sectional view on the line under the tanks 1 from end to end of the car, 3-3 of Figure 2. which partition is inclined from substantially the Figure 4 is a longitudinal cross sectional view center of the car to and secured to the upper through a side wall of the car and showing the 25 edge of the inner sheathing 2|. The inner edge novel arrangement of ?ues therein On line 4—4 of the partition is provided with‘ an upstanding of Figure 2. ba?le 36 spaced from the inner side of the tank Figure 5 is a view similar to Figure 3 of a modi to provide a passageway 31 therebetween. The ?ed form of the invention. partition is also spaced below the tanks 1 to pro Figure 6 is a cross sectional view on the line vide the space 38 which communicates with the 6—6 of Figure 5. passageway 31 and upper ends of the ?ues 26, The invention is adaptable to a refrigerator thereby providing an air cooling chamber about car having spaced apart insulated side walls, one the container or containers. Thus, as the air in the lading compartment 49 is warmed by the of which is shown at I ; an insulated roof 2; an insulated ?oor 3; a foraminous floor 4 above the 35 lading, it passes upwardly over the ba?ie 35 into ?oor 3 providing an air distributing space 6 be and through the passageways 37-38 and 8-9, downwardly through the ?ues 25, to the space tween said foraminous ?oor and ?oor. A liquid refrigerant container 1 is positioned 6, thence upwardly through the foraminous floor below the roof and spaced slightly therefrom and 4 to the lading compartment 40, when the cycle the adjacent side wall to form an air circulating 40 is repeated. Figure 1 is a cross sectional view through one side of a refrigerator car of the type with which space 8-9 therebetween, Since our invention is designed particularly for use with water ice or brine as the refrigerating medium, these con To assure the liquid or brine from the contain er being con?ned to a certain area or portion of the air cooling chamber 4| (8—9—3l-38), there tainers are of the solid type, provided only with is shown a pair of spaced vertical walls 42 which the ?lling opening l0, over?ow openings I l—l2 45 extend from the partition 35 to adjacent the roof and drain opening I3, provided with a removable 2 (see Figures 2 and 3) (or at least to above the stopper M. The hatch opening is provided with ‘ escape holes Il—-I2) and transversely of the car from the baiile 36 to the car side wall (See Figure 2), said walls 42 being cut out to ?t about the the usual locking and supporting mechanism, not shown. There is provided a row of refrigerant 50 tank 1. The spacing of the Walls 42 is substan containers 1, longitudinally spaced, on each side tially the width of the Wet ?ue 43, as shown in Figure 4., and consequently the space between the of the car, as is indicated in Figure 3, and, of said walls 42 communicates only with said wet course, there is a hatch opening through the roof ?ue and prevents any moisture th'erein from get for each container, the containers being posi tioned so that the ?lling openings register with ting into any of the dry ?ues 26. The over?ow the adjacent hatch openings. holes H—l2, drain l3 or other apertures for escape of liquid from the container are located The side walls I of the car are constructed substantially as shown in Figure 4, wherein I6 is in the portion of the tank between said walls 42, thus effectively con?ning any over?ow or the outer sheathing ;_ I"! are the vertical outer side posts to which the sheathing is secured; I8 is the 60 drain to the area of said partition between said insulating material and I9 are the spaced Z vertical walls and to said wet ?ue 43. shaped vertical inner posts which are generally As before inferred the portion 45 of the parti staggered relation to the outer posts I1, pref tion 35 between the walls is preferably provided erably occurring in a plane midway therebetween with a waterproof and corrosion resisting lining and which overlap wooden inner nailing posts 20 65 46 which’ is made easily removable from the re mainder so that it may readily be replaced when to which the inner sheathing 2!, preferably of plywood, is removably secured. necessary. (See Figure 3.) Inasmuch as the remainder of the partition is not subject to mois A metallic sheet 25, paneled substantially as ture it may be made of any cheap and light ma shown in Figure 4 to provide vertical ?ues 26, is interposed between the posts l9-2ll and the 70 terial, such as plywood. inner sheathing 2| and is secured to said nailing To protect the inner sheathing 2|, adjacent the Wet flue 43, from the corrosive action of such posts 20. This sheet 25 is, of course, galvanized liquid, it will be noted that there is provided a for the purpose of resisting the corrosive action ?ue lining 50 which likewise is of a material of brine or other liquid solutions draining there highly resistant to corrosive action of the brine through from the containers 1. They are some a plug 15, which, of course, is also provided with 2,402,930 (55 and this fine lining 50 may be welded atits ver tical edges to the sides of the sheet forming the ‘flue '43 and extends from immediately under the edge of the partition, as shown in‘ Figure 2,‘ to adjacent the car floor to thus provide a complete enclosure of material highly resistant to cor rosion for the passage ofxthe brine out of the chamber to the lower part of ‘the car. Preferably the lower margin 5| of this ?ue lining v5i? is bent inwardly, or angularly, below the inner sheathing v6: spaced below said container forming an air cool ‘ing chamber 'therebetween, said container hav ing apertures to provide for the escape of liquid from said container, a plurality of vertically dis posed removable flues associated with said wall communicating with said air cooling chamber, and means to con?neliquid from said container within a portion only of said air cooling chamber and conduct it into certain of said ?ues only, said certain flues being removable independently ‘2| to form a, ‘.ba?ie or shield extending below the of the other ?ues. foram'inous ‘floor 4 (see Figure 2) to prevent liquid dripping down the wetiiue from splashing 4. In a refrigerator car having a roof provided with a hatch; a liquid refrigerant container ad jacent the roof and provided with a ?lling open ing registering with said hatch; a partition through the foraminous floor 4 and on the bot tom of the lading, thus the vplyrv'cod partition 45 , and inner sheathing :2l are entirely protected ‘from any moisture, thereby lengtl'iening the aver age life of such material, saving costly tie-‘ups for maintenance, repairs, etc. ‘ > -. . " partially enclosing said container forming an air cooling chamber about said container, spaced walls dividing said chamber into a plurality of portions, said container provided with apertures In ‘Figure 5 we have shown a modification 20 located between .said walls'to provide for the ' escape of ' liquid from said container, whereby wherein the walls so are located at or near the adjacent ends of a pair of tanks 1, and the over ?ow holes iii and drain valves 52 are located in the end walls of said tanks or adjacent thereto. liquid from said container is con?ned to the por tion between-said walls. ‘ 75. In a refrigerator car having a roof provided Th'us the-over?ow and/or drain from the tanks _, é with a hatch, an insulated wall provided with 1 is con?ned to the area of the partition 63 which is under the space between the tanks and between the walls 66. Consequently, it will be apparent that one wet area of the partition 63 draining into one Wet ?ue 43 will be all that is required for ‘ each pair of tanks, whereas in the modi?cation previously described, there would be provided such‘ an area and ?ue for each tank. The plug It for the drain opening i3 is pro vided with a chain or other convenient means of raising same from the opening when desired to drain the tank or for other purposes. The accompanying drawings illustrate the pre ferred form of the invention, though it is to be understood that the invention is not limited to the exact details of construction shown and de scribed, as it is obvious that various modi?cations a plurality of fines associated therewith, a liquid container adjacent the roof and provided with a ?lling opening registering with said hatch; .a partition partially enclosing said container form ing an air cooling chamber about said container, spaced walls dividing said chamber into" a plu rality of portions, said container provided with apertures located between said walls to provide for the escape of liquid from said container, whereby liquid from said container is con?ned to the portions between said walls, said last men tioned portion communicating with certain of said flues only. i 6. The structure substantially as set forth in claim 4 wherein said apertures are located in the portion of the tank below the hatch for con venient access thereto. 7 '7. In a refrigerator car having a roof provided thereof, within the scope of the claims, will occur to persons skilled in the art. with hatches, a pair of liquid refrigerant con 45 tainers adjacent thereof and provided with ?lling We claim: 1. In a refrigerator car having an insulated openings registering with said hatches respec Wall and a roof, a liquid refrigerant container tively, a partition partially enclosing said con adjacent said roof and said wall, a partition tainers forming an air cooling chamber about spaced below said container forming an air cool said containers, spaced walls dividing said cham ing chamber therebetween, said container having 50 ber into a plurality of portions, one of said por apertures to provide for the escape of liquid from said container, a plurality of vertically disposed flues associated with said wall communicating tions overlapping the ends of adjacent containers, apertures located in the end portions of adjacent containers between said walls to provide for the with said air cooling chamber, and means to con escape of liquid from said containers, whereby ?ne liquid from said container within a portion 55 liquid from said containers is con?ned to the portion between said walls. only of said air cooling chamber and conduct it into certain of said ?ues only. 8. In a refrigerator car having a roof provided 2. In a refrigerator car having an insulated with hatches, an insulated wall provided with a wall, a roof, and a floor, a liquid refrigerant con plurality of vertically disposed lines associated tainer adjacent said roof and said Wall, a parti 60 therewith, a pair of liquid refrigerant containers tion spaced below said container forming an air adjacent the roof and provided with ?lling open ings registering with said hatches respectively, a cooling chamber therebetween, said container having apertures to provide for the escape of partition partially enclosing said containers liquid from said container, a foraminous lading forming an air cooling chamber about said con 65 supporting means spaced from said ?oor provid tainers communicating with said ?ues; spaced‘ ing an air distributing space; a plurality of verti walls dividing said chamber into a plurality of cally disposed lines associated with said wall com portions, one of said portions overlapping the municating with said air cooling chamber and ends of adjacent containers, apertures located in said air distributing space, and means to con?ne the end portions of adjacent containers between liquid from said container within a portion only 70 said walls to provide for the escape of liquid from of said air cooling chamber and conduct it into said containers, whereby liquid‘from said con-v certain of said ?ues only. tainers is con?ned to the portion between said 3. In a refrigerator car having an insulated walls, said last named portion communicatim: wall, and a roof, a lquid refrigerant container with certain of said ?ues only. adjacent said roof and said wall, a partition 75 9. In a refrigerator car having an insulated. 72,402, 980 wall provided with a plurality of vertically dis posed ?ues associated therewith, a liquid refrig erant container adjacent the upper part of said wall, means to direct liquid from said container into certain of said ?ues, and a ?ue lining secured disposed to form a b'a?‘le or shield to prevent liquid splashing through said foraminous ?oor. 12. A partition for partially enclosing a liquid refrigerant container of a railway refrigerator car, said partition having means to con?ne liquid to said certain ?ues to confine the corrosive action of said liquid to said certain ?ues. from said container to a certain area of said partition, and a waterproof and corrosion re sisting lining for said certain area, said lining being ‘removable. 13. A partition for partially enclosing a liquid viding a vertical ?ue, associated with said wall, 10 refrigerant container of a railway refrigerator a liquid refrigerant container adjacent the upper car, said partition having means to con?ne liquid part of said wall, means to direct liquid from said container into said vertical ?ue; a metallic flue from said container to a oertain'area of said par lining spanning said panel and secured to said tition, and a waterproof and corrosion resisting sheet to close said ?ue, whereby to con?ne the lining for said certain area, said lining being re corrosive action of said liquid to said ?ue. movably associated with said means. ' . 10. In a refrigerator car having an insulated wall, a metallic sheet formed with a panel pro 11. In a refrigerator car having an insulated 'wall, a liquid refrigerant container adjacent the 14. In a refrigerator car having a roof, at liquid refrigerant container adjacent the roof; a parti tion partially enclosing said container forming upper part of said wall, a foraminous false ?oor . arranged to provide an air distributing space 20 an air cooling chamber about said container, spaced walls dividing said chamber into a plu 'therebelow, a metallic sheet formed with a panel providing a vertical ?ue associated with said wall rality of portions, said container provided with and arranged to conduct air and liquid from ad apertures located between said walls to provide jacent said container to said space; a metallic for the escape of liquid from said container, ?ue lining spanning said panel and secured to whereby liquid from said container is con?ned said sheet to close said ?ue and confine the to'the portion between said walls. corrosive action of said liquid to said ?ue, the EDWIN R. BA'I'I‘LEY. lower margin of said ?ue lining being angularly GEORGE E. MCCOY.