Patent GB-216184-A (GB)
Title: Improved construction for heat insulation
IPC: B63B3/68
Filed: 1923-02-19
Abstract: 216,184. Rathmell, B., and McIvor, W. T. Feb. 19, 1923. Heat-insulating walls. - The walls and ceilings of cold-storage rooms, particularly those of ships, are lined with slabs of compressed cork or composition placed with their larger surfaces at right-angles to the surfaces tu be insulated, and wedged tightly together and retained in place by flanges of the transverse frame members of the ship or structure, or by metal or wood retaining members attached to these frame members. The edges of the slabs may be separated from the wall by an air space, or by a layer of cement &c. filled in as the insulating slabs are assembled, while the exposed surface of the slabs is covered with a layer of plaster keyed to wire mesh material anchored to the slabs by means of barbed rods. Partition walls may be formed of similar superposed slabs fitted between and retained by grooved wood or other posts or rails. A cross-section of a chamber between a bulk-head plating D and a partition G between decks C, C' is shown in Fig. 1, the lining for the hull plating being similar. The slabs A, A<2> are of a length to fit between beams or stiffeners F, and are cut away at the ends to fit behind the flanges of the stiffeners or behind fillets f<2> bolted thereto. They are assembled by passing them singly through a gap in the flange or fillet, as shown in Fig. 10, this gap being afterwards filled in by a suitable block or plate. The space J between the slabs and the plating may be an air space or be filled in with cement, and the plaster lining is keyed to wire mesh H, Fig. 6, attached to rods K having barbs k<1>, these rods being placed in position between the slabs during assembly. The partition G and a part of the hull lining are shown in plan in Fig. 4, the slabs A<3> of the partition having pointed ends for engagement between grooved posts e<5>. The brine pipes or suspension rails m<2>, Fig. 5, are supported on channels m<1> suspended from bolts M secured to the retaining fillets f<2>. The retaining members may take the form of plates e<9>, Fig. 13, supported by eye-bolts attached to the frame members E<2>, or such plates may be bolted to wood fillets attached to the frame members, and the brine pipes may be carried by bearers attached to the plates. The fillets or retaining members may be of triangular section, and may consist of hollow metal members e<21>, Fig. 20, mounted on a pin or bolt on the frame member E<10>. The frame-members, before being built into the ship, may have plates e<29>, Fig. 27, riveted to the flanges to serve as retaining members. A part of each such plate is cut away to enable the slabs to be assembled, the gap being subsequently closed by a strip bolted to the flange. The meeting faces of the slabs may be stepped, and are preferably cemented together. They may have registering V-grooves n<1>, Fig. 31, to receive a compressible packing material n<2> to form an airtight joint. The slabs may be set parallel with the frame members, as shown at A<4>, Fig. 24, in which case retaining members f<7> running transversely to the slabs are bolted to the flanges of the frames F'.