US914647A - Combined boiler and furnace. - Google Patents

Description

W. J. ELLIS.

COMBINED BOILBB AND PUBNACE. .nlnmki'w FILED 1mv.9 190s.

v Patented Mar. 9, 1909.

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WILLIAM I. ELLIs, o

SAVAGE AND CNL-THIRD TO W, A. SAVAGE, Oi? ANDREWS, Ntlt'il CAROLINA.

CQMBIN'ED IBOILER AND FRNACE.

Specification 'of Letters Patent.

Patented. March 9, 1905).

Application filed November 3, 1908. Seiil No. 461,712.

dreivs, in the county of Cherokee and State g of North Carolina, have invented certain new and useful Improvements in a Combined Boiler and Furnace; and I do declare the following to be a full, clear, and exact de scription of the invention, such as will enable others skilled inthe art to which it appertains to make and usethe same.

rll'his invention relates to a combined boiler and furnace.

The object of the invention is to improve the construction and arrangement of the boiler, `fire ox, combustion chamber and return ilues whereby a maximum amount of heat and a perfect combustion may be obtained, thus providing for a great saving of fuel. i' v A further object is to provide an improved means for feeding 'fuel'to the furnace Whereby this operation isperformed Without endangering the eyes or person of the fireman.

With these and other objects in View, the invention consists of certain` novel features of construction, combination and arrangef ment of parts as will be described and particularly pointedout in the appended claims.

In the accompanying rau/ings, Figure 1 is a central vertical longitudinal sectional view of my improved boiler, and furnace; Fig. 2 is afront elevation ot the saine; Fir. 3

.is a vertical cross section al vieiv through the fire box and front end of the boiler; and Fig. 4 is asimilar vieuv through the boiler and rear portion of the combustion chamber.'

Referring 'more particularly 'to the drawings, l denotes the fire box, which is suitably arranged anrhsupported by brackets, 2, betu'een the usual masonry walls, 3. The tire. box is provided .with a lining; of lire clay slabs, or bricks, '-l. arranged an ash pit, 5. The upper portion of the front end of the hre box is closed by a suitable Wall or head, 6, while the lower portion thereof is closed by a large door, 7 preferably hinged at its upper edge and adapted to swing upwardly, as shown. In the door, 7, is arranged a smaller door, 8, for strikingr purposes. Betr-een the 'fire box and the ash pit is arranged a grate, 9, the bars of which preferably run longitudinally from one end of the box to the other and are supported at Below the fire box is their opposite ends uponcuiwod grate supportingbars, ,10. y The ash pit, 5, 1s provided i at its front end with suitable doors, l2. Tue

are preferably formed of sheet metal which is strengthened and braced by angie-iron bars, le, to which are bolted angleiron supportingr bars, 15, around which thev masonry supportings walls, 3, are built.

The boiler, i6, may be of any suitable shape and is here shown as havingl an ovalshaped forward end, which is arranged in the fire box and to taper rearwardly to a rear cylindrical portion. vrl`he rear end of the boiler is closed by a rear head or iluesheet, 17, while the front end of the 'boiler is closed by a head or crown sheet, 18. On the rear end vof the boiler .is arranged a cylindrical return smoke box, 1S), said. smoke box and rear end of the boiler being` preferably supported by a Wall, 20. The forward end of the boiler which projects into the fire box extends through a rear fire box Wall, 2i, and on the upper portion of itsifront end is arranged a smoke box, '22, to .which the staclf; is eonnected. The outer or front end of the Y snn'ike box is preferably closed by two doors, 23, whereby access to the front end of the boiler is obtained. On the upper side of the tire box end of the boiler is arranged a steam dome, 24. The top of the fire box is closed by a suitable top plate, 25, through. which the steam dome projects and in which, adjacent to each side of the lire box, are arranged fuel supplying doors, 26, whereby fuel is introduced into the lire box from the top of the saine. This arrangement for feeding the iii-e box obviates the danger of injury to the eyes or person of the iireirian, as frequently occurs from the intense heat where the firing doors are arranged on a line with the hre box.

Arranged in the boiler near its lower side and extending through the entire length of i,the saine, is a' cylindrical combustion chainber, 27, the inner walls of which are linedwith suitable fire clay slabs or bricks, 28. The front end of the combustion chaniberopens boiler, while the rear end opens through the rear flue sheet, 17, and into the return smoke box, IQ, The front end of the combustion chamber is open at. its lower side in the lire box and above the grate 9, so that the gases and products 'f combustion will enter said ash pit and the outer shell, i3, of the fire box.

through the front end or crown sheet of the chamber and be consumed therein, the smoke l assingirointhe rear end of the chamber lnto the return smoke box, from which it is conducted through a series of return iu'es, 2 9, running the entire length oi the boiler and into the front smoke box, 22, from which it,

-is discharged through the stack connected thereto.

B 'arranging the combustion chamber near the ower portion ofthe boiler, a space is prov'vided above the chamber `to accommodate the return lues 'which are arranged in the upper portion of the boiler, as shown. The combustion chamber is su )ported and held in position throughout its length by a series ofvm'dially projecting tie or supporting bolts,

3Q-Which are connected at their inner ends to the combustion chamber and at their outer ends to the outer wall of the boiler, as shown.

The boiler is provided with the necessary' manholes and hand-holes, whereby access may be had to the interior of the same. If desired, air. supply passages, 31, may be formed in the large door which closes the forward end of the fire box, said passages being opened and closed by suitably pivoted cover p ates, 32, whereby air may be supplied to the smokebox, 22, access may be had to the return ues, 29, for the purpose of cleaning or renewing the same.

While my unproved boiler and furnace are .nesses the rire box. By providing the doors,23, in

here shown and described in the form. of a a rire box substantially U-shape in cross section, an inverted U-shaped boiler suspended in said tire box and having a cylindrical lateral extension, said boiler being closed at both ends, smoke boxes arranged-at the iront and rear of said boiler, a cylindrical flue extend-- ing the full length of said boiler and connected at its opposite ends with said fire box, and said rear smoke box respectively, return flues extending through said boiler and connecting said smoke boxes, doors arnanged at the top` of the fire box, and a fhie connecting with the front of same box.V l

In testimony whereof I have hereunto set my hand in presence of two subscribing wit- TNILLIAlVI J. ELLIS.

Witnesses: A l

C. E HUNT, E. EDMoNsToN, Jr.

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