Specification of James Buchanan : smoke-consuming apparatus applicable to boiler and other furnaces.

  • Buchanan, James.
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: Specification of James Buchanan : smoke-consuming apparatus applicable to boiler and other furnaces. Source: Wellcome Collection.

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    Provisional Specification. 13ucha7ians Improvements in Smoke-consuming Apparatus. off) the perforated boxes attached to the back of the furnace doors d. When the furnace doors are opened for adding fuel they move the lever e, which is attached to one of them. This lever opens a cock /, which allows water to run into the cistern a1. When sufficient water has run in to raise the float g, Fig. 2, to the top, the small arm h will shut the cock f1, the float g and 5 spindle i being raised to the top, the balance lever j,jl, will be raised at the end marked j\ and lowered at the other end, and as the slides or shutters b are connected to the lever y1, jl, by the chains, links, or rods k, k, so the one will be raised and the other lowered in the same proportion as the lever, and the space for admission of air (viz*, the furnace door box) will be opened. 10 These slides or shutters move on a spindle working in the furnace door’s hinges, and at the other end inside of catches h When the doors are closed after firing, the shutters or slides will begin to close (that is, the one will be raised and the other lowered) over the furnace door box in consequence of the water in the cistern a1 being reduced by running constantly off through the 15 tap m. On this tap is a dial for regulating the quantity of water to be allowed to run from the cistern; this quantity may be regulated according to the state or pressure of the atmosphere. When a large quantity of air is required to cause a proper combustion of the gases, a smaller quantity of water is allowed to run off, the float g therefore falls slower, and the slides b 20 do not shut in so short a time as when a large quantity of water is allowed to flow through the tap Fig. 3, Sheet 2, is a plan view of a furnace bottom with my improved reciprocating bars ; and Fig. 4 is a side elevation of my improved bars n, which are short and fitted on cross bars a, and are made to oscillate by 25 moving the lever p up and down, a few turns of which will serve to keep the furnace bottom clean, and will allow air to pass up from beneath into or through the fire. By these my improvements the stationary bars q will last much longer from the support received from the cross bars o; the stoker can clean the furnace bars very easily, and he does not require to open the 30 furnace doors to allow air to rush in to cool the flues, the regulation of the air giving sufficient time to ignite the whole of the gases arising from the fuel, and then when the smoke is perfectly ignited or lighted the air is shut off; by this means complete combustion is obtained and the flues can never get over¬ heated. A saving in fuel is obtained by the gases being perfectly consumed, 35 and also in labour by the apparatus being completely self-acting, as described. All these my improvements can be applied to furnaces with one or more doors and to those at present in use.