US573688A - jackson - Google Patents

Description

(No Model.)

J. MQGREGOR & J. L. JACKSON.

STEAM GENERATOR.

No. 573,688. Patented Dec. 22, 1896;

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JAMES MCGREGOR AND JOHN L. JACKSON, OF SAGINAIV, MICHIGAN; SAID MCGREGOR ASSIGNOR TO EDGAR D. CHURCH, OF SAME PLACE.

STEA -GENERATOR.

SPECIFICATION formingpart of Letters Patent No. 573,688, dated December 22, 1896.

Application filed August 24, 1896. Serial No. 603,772. (No model.)

To aZZ whom it may concern.-

Be it known that we, JAMES MCGREGOR and JOHN L. J AOKSON, citizens of the United States, residing at Saginaw, in the county of Saginaw and State of Michigan, have invented certain new and useful Improvements in Steam-Generators, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention consists in the construction of a steam-generator and particularly in the construction of the steam-dome into which the feed-water is delivered, the steam-dome being provided with a sediment-chamber whereby the water is purified before passing into the tubes of the boiler, the sediment being retained in the dome, from which dome it may be quickly blown out or otherwise removed, all as more fully hereinafter described.

In the drawings, Figure l is an elevation of a steam-generator substantially of the type shown in United States Patent No. 51%,414, of August 13, 1895, to which the present improvement is applied, the supporting-walls being shown broken away. Fig. 2 is a longitudinal section through the steam-dome and its connections with the water-space of the boiler. Fig. 3 is a vertical central longitudinal section through Fig. 2. Fig. 4 is a horizontal sectional section through the steamdome.

A is the furnace.

B are two end shells connected by the in clined pipes C in the lower portions and having the inclined faces D, in which are the tubes E, which connect into a drum F in the middle. Above this drum is the steam-dome G. The connection from the water-space of the boiler (which in this construction comprises the shells B, the tubes, and the drum F) is slightly above the bottom of the steamdome. In this construction we have shown this effected by forming the flange H around the edge of the connection from the drum F into the steam-dome, which forms a shallow drum-pan or sediment-chamber I in the bottom of the steam-dome.

J is the feed-pipe leading into the steamdome and discharging into this sedimentchamber. This pipe is arranged, preferably,

as shown in Fig. 4, coming in at one end, ex-

tending around the sides of the sedimentchamber, and discharging at the same end. The object of this is to prevent an undue cooling of the metal of the dome at one point. We deem it also desirable to discharge the water away from the connection between the dome and the water-space of the boiler, so as to give the greatest possible opportunity for the deposit of the sediment before the water descends into such water-space.

K are blow-off pipes connecting into the sediment-chamber, and M is a skimmer extending through one end of the dome. These pipes are all provided with suitable controlling-valves. In this construction of sedimentchamber and feed-pipes we find in practice that the sediment in the water will nearly all be collected in this sediment chamber or pan, and the water in the tubes of the boiler will thus be largely freed from its impurities with all the satisfactory results which are known to accrue from the use of pure water. It is much easier to get at and clean the dome, and it is found that a much larger per cent. of the sediment will settle quickly if brought into this hottest point in the boiler than if brought into the lower part, as usual.

\Vhat we claim as our invention is 1. In a steam-generator, a steam-dome, a water-space, a connection from the waterspace of the boiler into the steam-dome communicating with the latter above the bottom thereof, whereby a sedimentchamber is formed in the bottom of the dome, and the water-supply leading into the dome.

2. In a steam-generator, a steam-dome, a water-space, a connection from the waterspace of the boilerinto the bottom of the dome, a flange around this connection, forming a sediment-chamber in the bottom of the dome, and the water-inlet pipe into the dome.

3. In a steam-generator, a steam-dome, a water-space, a connection from the waterspace of the boiler in the bottom of the dome, a flange around this connection forming a sediment-chamber in the bottom of the dome, the water-inlet pipe entering one end of the dome, passing around and discharging at the same end, substantially as described.

4. In a steam-generator, a steam-dome provided with an opening in the bottom thereof,

0. In a stean1-generator,-a steam-dome, the water-tubes,a drum with which the water- 15 tubes connect, said drum extending into and communicating with the steam-dome above the bottom thereof, and a feed-water supply to said steam-dome.

In testimony whereof we affix our signa- 2o tures in presence of two witnesses.

JAMES MOGREGOR. JOHN L. JACKSON.

Vitnesses:

EDWIN KERSTEN, M. B. OD GHERTY.

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