GB906964A - Improvements in or relating to domestic oil burning heaters - Google Patents

Abstract

906,964. Extinguishing wick burners. STERLING INCANDESCENT CO. Ltd. June 29, 1961 [May 9, 1960], No. 16312/60. Classes 75 (1) and 126. An oil heater comprises a burner which may be moved from a position enclosing the wick, and a snuffer which can be moved to a position covering the wick, the operating means for these actions being normally locked, but when released by the effect of a draught or of the heater tilting or lifting, causing the wick to be snuffed. As shown, a radiant oil heater 1 with a reflector 68 has a burner 42 supported on rocker projections 33, 36, whose lower ends are carried by hooked end sections 28, 30 of a link rod 24 which passes lengthwise under the wick 5 whose upper end is framed by members 10. A snuffer plate 40 is springably attached to a U- shaped arm 38, 39 whose return portions 39 are fixed to the arms 32, 35. Running below the rod 24 is the wick raising shaft 8 with a knob 7, which passes through the wick holder 4 and has a flange 21 attached to it which operates a cover flap 19. Releasing means.-The releasing means for actuating the snuffer consist in a vertical rod 75 which is caused to move vertically in the case of a strong draught or the heater tilting or lifting as will be explained later. A lateral pin 76 on the rod 75 pushes against a flange plate 77 on a lever 62 which is pivotally attached at the other end to another arm 61 which is in turn pivotally attached to a laminated toggle pawl catch 60 whose laminations 60A, with curved end surfaces 60B, are normally forced against a projection 59 on the external wall of a cylindrical casing 57 by a strained spring inside the cylinder which is attached to a shaft 56 and also to the wall of the cylinder. If the arm 75 is moved up, the catch 60 is tripped and the casing 57 revolves until the hook 30 catches on a projection 67 from the wick holder. As the cylinder revolves, the burner is lifted up from the wick, the snuffer plate is swung across and down on to the ribs 10 surrounding the wick (see Fig. 9), and the burner comes down again. Safety devices.-In the event of the heater lifting or tilting, the hooked arm 79 (Fig. 2) is moved anti-clockwise by the spring 83, causing the arm 75 to lift; and in the event of a strong draught the reflector 68, which is pivoted at 70, is swung back at the bottom by the draught, again causing the plate 94 to raise the lever arm 75, which is connected to the arm 82 by a slotted connection 82A, and to the plate 69 by a slotted connection 73. Lighting the burner.-To light or relight the burner, the handle 31 attached to the hooked end 28 of the rod 24 is turned anti-clockwise from the position shown in Fig. 9 until the projection 59 again engages the catch 60, when the snuffer has been lifted up and away from the wick and the burner has moved up and down to its former position. Burner details.-The burner 42 has vertical slots in each end of its casing walls 45 to engage the flanges 12A of the guide rail 12 (Fig. 4). The walls are bent over towards each other at the tQp in section, and out at the bottom (Fig. 6). Two vertical perforated sheets 49 are held in position between the walls, which are held together at their top ends by an inverted trough cap 47 with a central longitudinal slot 48 through which projects an inverted U-shaped portion of a sheet 51 of wire mesh, the free ends of the arms of which are bent outwards and attached to the cap 47. A coil of wire 53 passes along the length of the sheet 51 in its curve, and both it and the sheet of mesh are retained terminally by end caps. Baffles.-The heater casing has a lower front section of mesh 85 (Fig. 2) topped by a baffle 88 leading above the wick. Below the wick holder another baffle 89 extends from the front casing, and a baffle 91 from. the back casing. Immediately below the reflector 68 is a baffle 90 extending from the back casing almost to the burner, and at the very top of the casing, above the grill 87, are openings 95.