Patent GB-702749-A (GB)
Title: Improvements relating to projector-type solid fuel charging machines
IPC: C10B31/06
Filed: 1950-11-21
Abstract: 702,749. Charging machines. GIBBONS BROS., Ltd., and COOK, N. G. Nov. 21, 1951 [Nov. 21, 1950], No. 28389/50. Class 51 (2) In a projector type solid fuel charging machine for use in charging coal into gas retorts or coke ovens of the kind wherein the outer end of the charging duct is displaceable bodily relative to the machine itself in a direction towards and away from the retort or oven mouthpiece the duct is provided with a deflector member adapted when the outer end of the duct is projected into charging position to form a floor for said duct and receive dust from the adjacent part of the duct, said deflector member being adapted on retraction of the outer end of said duct to be displaced in a direction transverse to the axis of the duct and to deflect through an opening in the base of the charging machine any dust which may have collected on the deflector member during the charging operation. As shown coal is fed to the mouthpiece 13 of a gas retort or coke oven 10 by a known type charging machine 14 through a duct 20 made by telescopically connecting fixed and slidable parts 21, 22. Displacement of part 22 relative to 21 is effected by connecting part 22 to a slide bar 25 one end of which is formed with rack teeth 26 meshing with a pinion 27 mounted on the machine frame and operated manually by a pulley cord 28. Movement of the bar 25 automatically causes a deflector member in the form of a plate 32 to lie horizontally when the part 22 is in charging position and to be in a vertical position 32a when the part 22 is withdrawn. When the plate moves into its vertical position dust which has collected on it is caused to fall to the retort house floor through a gap left at 34. Discharge doors 36 are arranged in the bottom of the machine for a similar purpose. During charging, gas, air and dust displaced from the retort or oven by the charge is caused to flow into the gas off-take 11 associated therewith. The machine 14 is mounted on rails set transversely of a battery of ovens and vertical movement of the charging apparatus is effected in a known manner. In a modified construction, Figs. 3 and 4, applied to an oven not provided with gas off-takes a dust trap 39 provided with baffles 40 is mounted on the machine casing the cleansed air and gas passing to the atmosphere via outlet 41 whilst the dust is collected at 42. In this construction two bars 25 are provided to manipulate the duct part 22 and plate 32. The slidable part 22 may abut the mouthpiece 13 or it may enter therein or both mouthpiece and part may be bevelled the bevels interengaging. Alternatively, the part 22 may extend around the exterior of the mouthpiece when in charging position. Instead of moving a part of the duct 20 all of it may move towards and away from the mouthpiece. According to the Provisional Specification the part 22 and plate 32 may be operated by separate means. Again the charging machine and duct may be fixed the whole assembly being movable towards and away from the mouthpiece the coal hopper arrangement being suitably modified.