Patent GB-142667-A (GB)
Title: Improvements in or relating to stoves
IPC: F24B1/28
Filed: 1919-05-14
Abstract: 142,667. Billing, N. Pemberton-. May 14, 1919. Open fire-places and cooking- stoves; hearths; draught, regulating; grates; casings; feeding and stoking; boilers, arrangement of: -A stove for cooking and heating generally comprises a grate, which may be visible all round, or visible from adjacent rooms, a hot-plate or hot-hearth at the level of the grate, and ovens, hot-closets, boilers, and cisterns above the fire chamber, the heating being controlled by a damper which directs the fire gases either downwards and through the hot-hearth, or upwards and through the oven and boiler flues. Fig. 4 shows the lower part of such a stove, which comprises an elevated grate D, coal receptacles D<7>, ash-shoot D<3>, and an annular boiler B with four openings 0 facing four different ways, for example, facing four rooms, the walls of which radiate from the stove. The upper end of the fire chamber has an annular hit-and-miss valve H, which controls the flow of gases to the flues of ovens &c. J - - J<3>, Fig. 9, and of boilers M, M', N, N', Figs. 9 and 13; thence the gases pass through flues K<1> in a hot-cupboard surmounting the ovens J and boilers M, N, and extensions of these flues pass near the cisterns Q, Q<1> before passing to the chimney. The openings 0 may be fitted with hinged lagged or mica-panelled doors. The fire may be fed through openings O<1>, which have hinged doors O<2> adapted to facilitate the charging of the coal, and vertically sliding doors O<3>, shown in dotted lines, which are moved down when it is desired to charge coal to the fire or to vary the draught through the fire. The grate D is mounted in guides D', and may be drawn forwards by a handle D<2>, Fig. 8, so as to cause the ashes &c. to fall upon the inclined shoot D<3>, at the bottom of which is the ash-door D<4>. A modified form of grate, shown in Fig. 15, has a central part D<10> which may be lifted by means of a plunger D<12>. The part D<10> has a flange D", the lower parts of which are connected by webs D" and a socket D<14>, with which the plunger D" is engaged by means such as rack-and-pinion gearing. The damper H at the top of the combustion chamber 0 is such that it may cut off the outlet at the top; in these circumstances, the combustion products pass out from the front of the fire into a hollow hearth E, Fig. 8, and thence, after passing round baffles, as described in Specification 142,582, up through flues F to a port G', Fig. 9, controlled by the damper H. When these flues and the ports G<1> are closed, the gases pass upwards from the fire, and through passages P, P' in the boiler, and corresponding ports in the damper H, to the flues shown in Fig. 9. These flues are formed round a central oven J flanked by two plate-warming &c. cupboards J', fitted with quadrant-shaped plate-holders J<5>, and surmounted by two side ovens J<1>, J2, between and over which the gases pass to a T-shaped flue, shown principally in dotted lines. They enter this flue by inlets L<1>, converge towards the central vertical part of it, and pass down it to the undersides of two boilers M<1>, N<1>, round and over these, and under, round, and over two other boilers M, N, and thence by flues K<1> to the chimney. A port closed by a damper L<4> may be provided to allow the gases to pass over the boilers M, N directly to the flues K<1>. Fig. 13 shows the water-heating fittings. At the top of the hot cupboard, which surmounts the fittings shown in Fig. 9, are a main hot-water cistern Q and a smaller cistern (not shown) supplying water to the radiator system; both are connected to the feed cistern Q'. A downcomer pipe Q<3> is connected at Q<4> to the annular boiler surrounding the fire-chamber, and the downcomer Q<5> from the smaller cistern is connected to the boiler N<1>. The upflow pipes Q<6>, Q<7>, Q<8>, which are fitted with a two-way valve Q<3>, lead to the boilers M<1>, N<1>, and the upflow Q<13> leads to the cistern Q. A pipe Q<10> supplies water for domestic use, and flow and return pipes Q<11>, Q<12> lead to and from the radiator system. By means of the valve H, Figs. 4 and 9, it is possible to heat more intensely either the boilers M, M<1> which supply water for domestic use, or the boilers N, N<1>, which supply water to the radiator system. The valve H, in a modified form, consists of a flat disk or ring with ports controlling outlets P, P<1>, &c. in the flat upper end of the water-heater. The valve may be operated by a key, or by a disk-like handle, serving also as an indicator, at the front of the stove acting through toothed gearing and a circular rack H<5> attached to the valve H. The surfaces above the fire-place openings are covered by hinged slats S, Fig. 11, with lagging S<1>, so that heat radiation may be permitted or cut off as desired. In a modification, the space all round the fire-chamber is clear, and the hot hearth E extends all round it. Above the fire-chamber are four or other number of ovens, boilers, or other like receptacles at the same level. The fire-chamber A may have several openings 0, or only one. The arrangement of the ovens and boilers, shown in Fig. 9, may be varied.