Specification of William Brunton : fire grates.

  • Brunton, William
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Specification of William Brunton : fire grates. Source: Wellcome Collection.

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    JBruntons Improvements in Fire Grates. feeder,) excepting that the bottom is made oblong, its length being equal to the width of the grate which it is intended to feed, and its width about nine inches ; the apparatus through which the coal passes from the receptacle is on one of its sides and close to the bottom, and this aperture is adjusted to the size of the pieces of coal used by means of a sliding shutter, raised or lowered 5 as occasion may require, varying from two to five inches; the bottom of the said fire feeder is an iron plate about twelve inches wider than the lower orifice thereof, and inclined downward about one in six towards the side on which is the aperture for discharging the coal, and in the same direction it has a recipro¬ cating motion by which the coal resting upon the said iron plate or bottom is 10 passed through the aforesaid opening in the side of the said fire feeder, and precipitated over the lower edge of the said plate into the said feeding hole. I communicate the said reciprocating motion to the bottom plate which moves through equal space at each end by a shaft extending the whole length of the sliding plate; near to the extremities of the said shaft I fix two levers of equal 15 length, to the ends of which by joints and rods I attach the said sliding bottom plate, which by the reciprocating motion of the said shaft and levers is moved in a direction transverse to the length of the said feeding hole and aperture in the bottom of the said fire feeder. In order to prevent any air from entering the furnace by the said feeding hole, I connect the said fire feeder to the said 20 feeding hole by a case which incloses the lower part of the said fire feeder with its moveable bottom plate, making a hole in the said case through which the said shaft, with its equal levers, is extended, in order that the necessary motion may be communicated thereto, by connecting the same with an engine or other conve¬ nient power. I construct a rectangular box of sheet or cast iron or other suitable 25 materials ; I make the side thereof, from which the coal is discharged, as long as the width of the grate that it is intended to feed, its width varying from four to eighteen inches, its depth also varying generally from one foot six inches to five feet, according to the local circumstances of its situation, or to the quantity of coal it is required to hold; it is close at the bottom ; the upper end 30 is open, by which it is filled, but is provided with a close, well fitted cover, to prevent the introduction of atmospheric air; the side from which the coal is discharged is moveable in the direction of its own plane and the depth of the box, being attached thereto by slides or rabbets, in which the said side moves and fits so closely as to prevent coal passing between it and the said box. The 35 box, which I call the coal receiver, or for brevity, the receiver, being thus constructed, filled with coal, and placed perpendicular or inclining towards the side which is moveable, the said moveable side is forced downward by the power of a steam engine or other convenient power; the coal will then be
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