US389969A - Half to d - Google Patents

Description

(No Model.)

2 Sheets-Sheet l..

J. LEIGHTHAM.

BOILER.

Patented Sept. 25, 1888.

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2 Sheets-Sheet 2.

(No Model.)

J. LEIGHTHAM. r BOILER. 180.389.9639. 'Patented Sept. 25, 1888.

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ATTORNEYS.

-UNTTED STATES PATENT @EETQE.

JOSEPH LEIGHTHAM, OF RFADING, PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO D. & E. KREMP, OF SAME PLACE.

. BOILER.

QPECIFIOATION forming part of Letters Patent No. 389,969, dated September 25, 1888.

(N0 model.)

T0 all whom it-may concern.-

Be it known that I, J osEPH LEIGHTHAhLof Reading, in the county of Berks and State of Pennsylvania, have invented a new and Improved Boiler,of which the following is a full, clear, and exact description.

My invention relates to an improvement in boilers, especially adapted for rolling-mills and similar shops, and has for its object to protect the boiler over the neck of the furnace, to in crease the heating-surface,utilize the products of combustion to the utmost, and introduce the water in a heated state to the boiler.

The invention consists in the construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings,formingapart ofthis specification,iu which similar figures of reference indicate corresponding parts in both views.

Figure 1 is a central longitudinal and vertical section through the boiler, and Fig. 2 is a transverse section through the same.

Heretofore boilers in rolling-mills and similar shops have been constructed without tubes, the fire from the furnace coming in passing contact with the shell only. By this means much of the products of combustion has been wasted and the said products of combustion impinging directly upon the shell opposite theirpoint ofentrance burn out the surface in a short time.

To overcome these objections is the prime object of the presentinvention. To that end, within a suitable casing or setting,10, aboiler, 11, is longitudinally and horizontally supported in any suitable manner. Above and connected with the boiler asteam-domc, 12, is provided, having apertures 13 for the application of safety-valves, a manhole, 14, and outlet 15. Through the boiler a series of longitudinal tubes, 16, are projected, around which the water is designed to lie, and. th rough which the products of combustion are designed to pass.

Below the boiler and within the casing one or more longitudinal heaters, 17, are suspended by means of the tubular connections 18 uniting them with the boiler, and by means of a which they project, being at that point pro vided with a removable or detachable cap, 19, whereby entrance is effected for the purpose of cleaning. From the heater or heaters 17 a tubular connection, 21, is effected with any ordinary or approved form of mud-drum,22,located without the boiler-casing, and to which water is supplied as and in a manner found in practice most desirable. In the under side of the casing 10, near what I designate the front end, the neck 23 of the furnace is inbottom, substantially near the furnace-neck, a series of apertures, 24, are produced, the said apertures being collectively surrounded by the upper enlarged end of a segmental or hornshaped tube, 26,the smaller end of which horn like tube is projected through the boiler-casing at the front end, and provided with a detachable cap,27, similarto the cap ofthe heater and for the same purpose, and also with a tap or petcock, 28.

essentially above the neck of the furnace. The boiler is of less length than the casing,a space being made to intervene the head of the former and the ends of the latter,of which the forward space is divided by a partition, 29, so that a ducts of combustion from the boiler-tubes, and from which chamber the waste products of combustion are taken off by a due, 31.

In operation the water entering the muddrum passes up into the heaters, and from them to the boiler, and through the boilerapertures 24 into the horn26, as illustrated. The products of combustion rushing up through the neck of the furnace are deflected by the convex surface of the horn, caused to travel rearward in contact with the boiler and heater through the boiler-tubes and outward through the off-take flue. The products of combustion impinging upon the surface of the horn do not injure the same owing the glancing surface of contact and the fact that the tube is kept constantly filled with water.

Having thus fully described my invention, I

support in one end of the boilcrcasing through The convex surface of the horn-like tube is chamber, 30, is provided, receiving the pro troduced, and at that point in the boilerclaim as new and desire to secure by Letters Patent- 1. The conihination,with a boiler provided at its fire-contact surface with a series ofapertures, of a curved shielding-tube surrounding said apertures, substantially as and for the purpose herein set forth.

2. The combination, with a boiler provided with a series of apertures in the fire-contact surface, and a casing provided with a fire-inlet in substantial alignment with said apertures, of a curved shielding-tube surrounding said apertures, having its convex surface presented to the tirei nlet, substantially as and for the purpose specified.

3. In a boiler for rolling-mills and similar establishments,the coinbination,with the shell having provided in the under surfaeea series of apcrtu res, and aseries of longitudinal tubes projected through from end to end of the shell, of a horn-like tube inelosing said apertures, as and for the purpose specified.

4?. In a boiler for rolling-mills and similar establish 1nents,the combination with the shell having a series of apertures produced in the bottom, andaseries of longitudinal tubes projected through the shell from end to end, of a horn like tube inclosing said apertures, a steam-dome connected with the shell at the top, and heaters below the shell connected therewith, substantially as and for the purpose specified.

5. In a boiler for rolling'mills and similar establish me11ts,the eo1nbination,with the shell provided with apertures in the bottom, tubes projected throughthe shell from end to end, a casing surrounding the shell, and a partition at one end of the casing dividing the same into two compartments, of a horn-like tube surrounding the shell-apertures above the furnace-opening in the casing, and Water-heaters suspended Within the casing beneath the shell and connected therewith, substantially as and for the purpose set forth.

JOSEPH LEEGHTHAM.

Witnesses:

F. 1. KREMP,

P. Sounneu.

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