Patent GB-190717331-A (GB)
Title: Improvements in or relating to Portable Cooking Apparatus
Inventor: BOULT ALFRED JULIUS
Filed: 1907-07-29
Granted: 1908-07-23
Abstract: 17,331. Boult, A. J., [Hildesheimer Sparherd-fabrik A. Senking]. July 29. Cooking-stoves. - A portable cooking- apparatus, shown in plan in Fig. 2 and in end view in Fig. 4, comprises a boiler 1, surrounded by a bath 7, of small volume, of a liquid of high boiling-point, such as glycerine, and heated below by a furnace 5 which communicates by a flue with a chimney 6. The chimney is hinged and carries a bracket which engages one of the bolts of the boiler cover 2 when the chimney is lowered. The interior of the bath round the boiler communicates with the air by a pipe 8, Fig. 5, which passes up, and through the wall of, the chimney, and is provided with a hingejoint in alinement with the hinge of the chimney, to enable it to fall with the latter into the horizontal position. In order to cook the food in the boiler 1 by a short application of firing, the flue and lower part of the chimney, as well as the boiler, are surrounded by a bath, and the whole enclosed by an outer hollow body, covered with a non-conducting material ; after the preliminary heating by the furnace, the heat of the bath liquid completes the cooking. The sides of the outer body which encloses the boiler are turned in to provide a long bearing-surface, and the whole is mounted on the frame of a carriage. A supplementary boiler, enclosed by a furnace-box 18 and heated by a furnace 19, is mounted on the same carriage, and is provided on top with two covers separated by a strengthening bridge carrying a safety-valve. The furnace 5 communicates by a channel 25, and the furnace 19 by a channel 26, with the common chimney 6, which is laterally disposed and is divided in its lower part into two sections by a plate 27 ; the entrance from the furnace 19 is controlled by a valve 28, operated by a handle 31, and that from the furnace 5 by a valve 29, operated by a handle 30. The section communicating with the furnace 5 is further divided by a plate 32, which extends to the wall of the boiler, and serves to direct the furnace gases round the latter. A store chamber 33, Fig. 11, is divided into three compartments by partitions 34, 35, the partition 34 extending up to the lid 39, and forming a fuel box 36, provided at the bottom with a door 40, which is guarded by a sloping plate 41. The other compartments are for food stores and utensils, the partition 35 falling short of the lid 39, in order to allow long articles to be enclosed. In a modification of the store chamber, the fuel and food compartments have separate lids, of which the adjacent edges engage a U-shaped groove on the upper edge of the partition 34, in order to prevent access of rain to the inside of the chamber. The front part 41 is deeper than the back part, and the supplementary boiler is similarly formed. The binges 47 of the lid of the boiler 1 are so arranged that, when the cover is raised, it will rest against the chimney. In a modification of the boiler 1, the mouth is reduced in order to make the boiler lighter, improve its packing surface, and enable a larger part of it to be covered with insulating-material.