Patent GB-190006891-A (GB)
Title: Improvements in or connected with Firegrates and the like, with the Economic Combustion of Coal or other Fuel, and with the Abatement or Prevention of Smoke Soot or other Nuisance therefrom.
Inventor: SHARP WILLIAM HENRY
Filed: 1900-04-12
Granted: 1901-02-23
Abstract: 6891. Sharp, W. H. April 12. Grates; feeding and stoking.-The grate of a domestic fire, or of a furnace, is constructed so that fresh fuel may be introduced beneath the incandescent fuel, whereby the fresh fuel is heated from above and the gaseous products given off are consumed in passing through the incandescent fuel. The different parts which, when put together as in Fig. 14, form the grate of a domestic fire, are shown in the Figures. Fig. 1 shows the front of the grate, having V-shaped bars 31 above, an open space beneath, perforatad projecting lugs A, B, C, D, E, F, G, H, and recesses K, L. Fig. 5 shows one of two similar sides, having slots A<1>, B', to receive the lugs A, B, internal projections M, N, 0, to support a firebrick, lugs U, V, projections R, S, and holes W, X, and Y. The position of the cover, Fig. 8, is shown in dotted lines. Fig. 4 shows the lower part of the grate, namely, that on which the new fuel is put. It has lugs P, Q resting on the projections S, Fig. 5, and K<1>, L<1> resting within the recesses K, L, Fig. 1, and held there by the projections R, Fig. 5. The bars are of triangular section. Fig. 7 shows the moving part of the device, consisting of a threesided frame or lift 1, 2, 3, 4, resting by means of the lugs 1, 2 in the recesses Z, Fig. 5, of the side plates, wherein they are held by projections 23, 24, Fig. 10, on the back-plate, while the lugs 3, 4 rest as shown in Fig. 14. The side bars of the frame are of V-section. Upon these bars slide the angularly-recessed side bars 5, 7 and 6, 8 of a " comb " or set of triangularly-shaped bars which are prevented from leaving the bars 1, 2, 3, 4 by lugs 7, 8 through which screws are passed. Fig. 8 shows a cover or plate which fits over the parts shown in Figs. 4, 5, and 7, having lugs T, 22 for attachment to the back-plate at 22<1>, T', Fig. 10, downward projections 12, 11 for partly closing the space behind the vertical bars as shown in Fig. 5, and projections 27, 28 to fit outside the upper edges of the side plates. Fig. 10 shows the backplate with recesses 22<1>, T<1>, to receive the lugs 22, T on the top plate, with recesses U<1>, V<1>, 25', 26' to receive the lugs U, Y, 25, 26 on the two side plates, and with projections 23, 24 to retain the top end of the lift within its recesses. Fig. 13 shows a sliding door, which normally rests in front of the open space in the bottom of the front, Fig. 1. When it is desired to add fresh fuel, the lift, together with the comb and the sliding door, is raised by any suitable device, and fresh fuel fed into the space formed by the bars shown in Fig. 4. When sufficient fuel has been inserted, the comb is pushed backwards out of the way, whereby the incandescent fuel falls and rests upon the fresh fuel. The pivoted frame and door also fall. When required, the comb is drawn forwards again to the position shown in Fig. 14. The space above the cover-plate, Fig. 8, is surrounded with firebricks as usual, to form an ordinary fire space.