US54940A - Improvement in feed-water heaters - Google Patents

Description

UNITED STATES PATENT OFFICE.

JOHN NICHOLSON, OF ALLEGHENY CITY,- PENNSYLVANIA.

IMPROVEMENT iN FEED-WATER HEATERFS.

Specification forming part of Letters Patent No. 54,940, dated May 2J, 1866.

To all whom it may concern:

Be it known that I, JOHN NICHOLSON, of the city and county of Allegheny, and State of Pennsylvania, have invented a new and useful Improvement in Water-Heaters for Steam- Boilers; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accom panyin gdrawings and to the letters of-reference marked thereon.

The nature of my invention consists in a steam-chamberfurnished with an inlet and outlets for steam, and placed within a waterchamber Whicli is connected to the steam-boiler and the supply of Water by means ot' suitable pipes, the Whole being constructed and arranged substantially in the manner hereinafter described.

To enable others skilled in the art to make and use my inventiom'I will proceed to describe its construction and operation.

In the accompanying drawings, Figure l represents a longitudinal section of my improved Water-heater for steam-boilers. Fig. 2 represents a transverse section of the same cut through at line l.

In the drawings. A represents the steamchamber, which is .furnished with an inlet, B, for steam. This inlet or pipe is connected to ,the steam-boiler and is furnished with a suitable valve for regulating the admission of the steam into the chamber A. The upper end (marked f) of the steam-chamber A is made coniform, so that the Water in entering the Water-chamber I) will be distributed evenly around the sides of the steam-chamber.

The bottom or lower end of the steam-chamber is furnished with a short pipe, (marked 0,) which is placed in the center of the bottom ot' the chamber, .an d so arranged that it will come directlyover the pipe (marked X) of the Waterchamber.

Around the Outer edge of the bottom of the steam-chamber are a number of small openings, (marked e.) l

The space which forms that part of the water-chamber which surrounds the sides of the steam-chamber A should be made very narrow, so as to form a thin sheet of Water, so that it can be heated with rapidity as it passes down the sides of the steam-chamber.

The pipe o is connected to the ordinary injector now used for supplying boilers With Water; or it can be, when so desired, connected to any device for supplying the chamber D with Water.

The pipe X is connected in a suitable manner to the steam-boiler or to the stand-pipe 5 or it may, if so desired, be attached to the forcepump used for forcing Water into the boiler.

The man ner of constructing and the relation that the several parts of my improved heater bear to each other Will readily be understood by the skillful mechanic. I will, therefore, proceed to describe its operation. Water is forced into the chamber D by the ordinary injector, and steam is admitted into the chamber A through the pipe B, which Will heatthe water as it passes down the sides of the chamber; and after it has performed its oiiicein heating the Water, it will pass out through the openings c and pipe O, and assist in forcing the Water into the boiler.

The advantages Ot' my improved heater are as follows: First, a constant, regular, and uniform action of the injeetoris obtained; second, supplying the boiler with hot Water when the injector is used as a means for forcing Water into the steam-boiler, all of which is very d`esirable and very useful.

Having thus described the nature, construction, and operation of my improvement, what '-I claim as of my invention isrlhe steam-chamber A, furnished with an inlet,-B, and outlets C and e for steam, and placed within a Water-chamber, D, which is connected to the steam-boiler by pipe X and to the supply of Water by pipe o, the Whole being constructed, arranged, and operating substantially as herein described, and for the purpose set forth.

JOHN N IOHOLSON.

Witnesses:

J Aix/nes J. JOHNSTON, ALEXANDER HAYs.

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