Patent GB-710898-A (GB)
Title: Improvements in structural body to provide temperature conditioned spaces
IPC: B61D17/24
Filed: 1951-12-28
Abstract: 710,898. Ventilating vehicles. PRESSED STEEL CAR CO., Inc. Dec. 28, 1951 [Jan. 6,. 1951; Dec. 17, 1951], No. 30332/51. Class 137. [Also in Groups XIII and XXXII] A vehicle body 1 for aircraft, railway vans or trucks comprises an outer laminated plywood shell, an inner laminated plywood shell so supported within the outer shell by adhesively connected wooden spacers as to leave a space between the shells on all faces and means for circulating cooled or warmed gas or vapour within the space to maintain the stored goods at a constant temperature. The rod R, ends E, floor F and sides S of the outer shell are formed of inner and outer layers of plywood spaced by horizontal and vertical bars 47 in the sides and ends, longitudinal and transverse bars 46 in the roof and longitudinal beams 48 in the floor. The inner shell 5 is supported on the floor by projections 35, 38, Fig. 3, by bars 36 in the region of the wheel units, and by stronger blocks 39 adjacent the doors. The roof of shell 5 is fixed to the roof R, Fig. 6, by a longitudinal bar 51, notched longitudinal bars 51a, and short, side transverse bars 45r. The roof 5 has downwardly displaced parts 5' at each end defining compartments 6, 7 for the air attemperating and circulating means. The sides of the inner shell are joined to the sides S by vertical bars 42 some of which 43 are stronger where the goods are to be secured to the body. The ends of the inner shell are joined to the ends E by vertical bars 34. The body is completed by corner pieces 40 and all the above members are glued together. Within each compartment 6 or 7 is located an evaporator 80 within a casing 81 and a circulating fan 19 which blows cold air through openings 62 in a wall 60, through the passages between the roofs of the shells, down between the side walls, across between the floors and up the ends. An electric heater 30 is disposed under the evaporator and below the heater 30 is a drip tray 67 having a drain 68 for condensate. The part 65 of the roof part 5' is hinged to allow access to the cooler and heater assembly. The disposition of these parts as shown in Fig. 21 is diagrammatic only. Evaporator 80 is supplied with refrigerant from a compressor-condenser unit 24 the supply to which is controlled by a thermal element 16 within the storage space and which derives current from a diesel or motor driven generator 13 supplied either with fuel from a tank 8 or with current from a connection 14. The heater 30 is brought into operation at low ambient temperatures by a thermal element 17 located outside the body and is also supplied as is fan 19 by generator 13. The above equipment is duplicated, one set supplying one of compartments 6, 7. As shown in Fig. 2, the Diesel generators, refrigerant compressors and control units can be mounted on the roof in lowered housings 6<SP>1</SP>, 7' having hinged access openings, a catwalk 31 being also provided. It is stated that the provision of the inner wooden shell 5 eliminates precipitation of moisture on the inner faces of the walls of the storage space. Specification 1486/15, [Class 29], is referred to.