US448178A - William james chubb - Google Patents

Description

(No Model.)

W. J. GHUBB. APPARATUS THROUGH WHICH AIR IS SUPPLIED TO FURNACES OF STEAM BOILERS.

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\VILLIAM JAMES OHUBB, OF LONDON, EBIGLAND, ASSIGNOR TO THE VULOAN PATENT SMOKE CONSUMER LIMITED, on SAME rLAcn' AND FUEL EOONOMIZER CORPORATION,

APPARATUS THROUGH WHICH AIR IS SUPPLIED T FURNACES OF STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 448,178, dated March 10, 1891.

Application filed June 80, 1890. gerial No. 357,288. (No model.) Patented in England May l6 1884, No. 7,782; in France August 22, 1884,11'0. 163,891; in Belgium'f'ebrnary 15, 1888, No. 80,861; in Cape of Good Hope March 3, 1888, No. 8, and in Austria-Hungary May 9, 1888, No. 6,999 and No. 17,413.

To aZZ whom it may concern.-

.Be it known that 1, WILLIAM JAMES Cause,

a subject of the Queen of Great Britain and Ireland, and a resident of London, in England, have invented certain Improvements in A-pparatus Through which Air is Supplied to the Furnaces of Steam-l3oilers, (for which I have obtained a British patent, No. 7 ,7 82, dated May 16, 1884; a French patent, No. 163,891, IO dated August 22, 1884:; a Belgian patent, No. 80,661, dated February 15, 1888; a Cape of Good Hope patent, No. 6, dated March 3, 1888, and Austro-I-Iungarian patents, No. 6,999 and No. 17,413, dated May 9, 1888,) of which the x 5 following is a specification.

My invention relates to apparatus for offecting in the furnaces of steam-boilers a more perfect combustion of the fuel and of the gases arising therefrom, thereby economizin g the consumption of fuel and preventing the formation of smoke.

This apparatus consists of a tuyere or f unnel-shaped passage, which may extend entirely across the fire-box or furnace-chamber,

and air is drawn into the tuyere from below the fire-bars and discharged through one or more narrow months in such wise as to mingle with the unconsumed gases and smoke that are making their escape from the furnace, whereby the desired more perfect combustion is effected. As hitherto constructed, the apparatus, and especially the delivery mouth or months thereof, has very speedily been so damaged by the heat of the furnace 5 as to become useless, and either the whole apparatus must be renewed or the delivery mouth or months thereof must be recreated and reformed.

Now the object of this my invention is so to construct and fit the apparatus that it shall not be so liable to be damaged and rendered useless by the heat of the furnace, while any renewal or repair that may be required can easily, quickly, and cheaply be effected, and I carry out this object by forming that part of the apparatus, especially the delivery mouth or months thereof, on which the heat of the furnace will chiefly play of fire-brick or other similar and suitable material, while the metal part of the apparatus is so formed as properly to carry this fire-brick or material 011 the one hand, and on the other hand as easily to be secured to the walls of the firebox or furnace-chamber, or otherwise to be placed in position.

In the front end of the fire-box A, I fit a I tuyere B, which preferably extends entirely across the fire-box and is made of metal. One side of the tuyere is formed in the shape of a bent plate O, and the other side forms a mid-feather D, on which lugs E maybe fitted 7o to support the fire-bars F. This tuyere B is secured to the lower parts of the walls of the fire-box A in any convenient manner, and to the lower and preferably larger entrance mouth G thereof, which is on alevel with the bottoms of the fire-bars F, or thereabout, may be fitted the hinged plate 11, actuated by the lever and red I to regulate the admission of the air. The metal parts of thetuyere 13, or that is to say the plate 0 and the mid- 8o featherl), are so formedit may be, as shown in Fig. 1that one or more blocks L, of firebrick, fireclay, or other similar and suitable material of the required shape, can be held and secured in suitable seatings made there- 8 5 for in such wise that in or by the one or more blocks L is or are created the one or more delivery1nouths K, which may be horizontal, as shown in Fig. 2, or may be bent or curved upward or downward, as may be dcsired, and the front web D of the mid-feather D may also be faced with fire-brick or other material, if necessary, or may be entirely removed and replaced by the fire-brick or material. Thus in this apparatus part of the 5 air entering the front of the ash-pan M is section 60 caught by the plate II, and passing through the mouth G is forced along the tuyere B, thence issuing through the mouth or mouths K, and,mixing with the unconsumed gases and smoke arising from the fuel in the firebox, insures a more perfect combustion, while, as the intense heat of the furnace does not play upon the metal, but on the fire-brick or similar material,the delivery mouth or months of the tuyere will not be blocked up or closed, though when any renewal or repair is required it can easily, quickly, and cheaply be effected. lVhen, as is perhaps most convenient, the metal part of this tuyere is made in one piece, it can be secured in position by the bolts N. Again, when the front web D of the mid-feather D is removed and replaced by the fire-brick or material it is very convenient to make a number of holes in the other web of the mid-feather to allow the heat of the fire-brick or material freely to pass into the tuyere B and highly heat the air passing therethrough. Again, the mid-featherD may be made entirely of the fire-brick or other material aforesaid and no metal at all be used therein, excepting, perhaps, if necessary or desirable, a transverse baror stretcher below the level of the fire-bars to support the same. Again, when there are two or more delivery-mouths K they may be arranged at different levels, or may be formed to cause the streams of air issuing therefrom to traverse the fire-box in different directions and at different angles. Again, when the 1000- motive is intended to travel with either end foremost instead of the hinged plate H a sliding plate may be fitted.

In marineand other boilers I can, if and when required, employ fans or other usual appliances to force a strong draft through the tuyere.

This apparatus, it is evident, can be used in and with all such boilers as havea square, or rectilinear or a high fire-box or furnacechamber or combustion-chamber, and .in all cases is placed in such proper position in relat-ion thereto as to cause or allow the stream or streams of air that has or have passed through the tuyere to mingle with the unconsumed, gases and smoke arising from the furnace, and it may be secured in such position in any usual or other manner, as may be desired in each case.

I claim as my invention and desire to secure by Letters Patent- 1. In a tuyere or apparatus through which air is supplied to the furnace of a steamboiler, the combination of the plate C and mid-feather D, of metal, with the block or blocks L, of fire-brick or other similar material, fitted to the upper ends of the said plate and mid-feather, substantially as-and for the purpose specified.

2. In a tuyere or apparatus through which air is supplied to the furnace of a steamboiler, the combination of the plate 0, of metal, with the mid-feather D and block or blocks L, of firebrick or other similar material, fitted to the upper ends of the said plate and midfeather, substantially as and for the purpose specified.

- In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

XVILLIAM JAMES CHUBB. Witnesses:

J AS. HART, JosEPH E. MOORES.

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