US331488A - Steam-boiler - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

A. 0. FRIGK.

$TEAM BOILER. No. 331.488. Patented Dec. 1, 1885.

N PETERS. Phalwulhagrapllnr. Washington. D. c.

(No Modell) A. 0. PRIOK. 2 mm.

STEAM BOILER. NO- .488. I Patented DQQ .1I 1885 -wZnes,sas: Q Ewen/tor i D Y I u.

UNITED STATES ATENT rrrce.

ABRAHAM FRIOK, OF \VAYNESBOROUGH, PENNSYLVANIA.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 331,488, dated December 1, 1885.

Application filed May 9, 1885. Serial No. 164,923. (No model.)

.To all whom it may concern:

Be it known that I, ABRAHAM O. Farox, a citizen of the United States, residing at Waynesborough, in the county of Franklin and State of Pennsylvania, have invented certain new and useful Improvements in Steam- Boilers; and I do hereby declare the following to be a fu1l,.clear, and exact. description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. 1

This invention relates to the type of steamboilers provided with'so-called steamsepa rators.

My invention, though adapted to various styles of boilers, is more especially designed for use on traction-engine boilers, the object being to so construct and apply the separator or steam-drum that a higher water-level can be maintained than in the ordinary tractionengine boilers, and the crown-sheet kept covered with water in traveling down descending grades without danger of priming.

To this'end my invention consists, first, in arranging a steamdrum in the upper part of the boiler, having an open neck extending up into the steam-dome; and, secondly, in providing this steamdrum with an open-e11ded elevated pipe-at the fire-box end of the boiler, so that while steam generated around the firebox may continue to flow through this pipe into the steam-drum when the dome is sealed by water in descending a hill, but little or no water can find its way into the steam-drum through this pipe when the boiler is tilted the other way in ascending a hill.

In order that my invention may be clearly understood, I have illustrated in the annexed drawings, and will proceed to describe, a practical form thereof.

Figure 1 represents a vertical axial section of a locomotive or traction engine boiler containing my improvement. Fig. 2 represents atransverse section thereof, taken in the plane of broken line a: w of Fig. 1. Fig. 3 illustrates a modification.

The same letters of reference indicate identical parts in all the figures.

The general construction of the steam-boiler illustrated in the annexed drawings is like that of an ordinary multiflue traction-engine boiler of the locomotiveboiler type. A refers to the steam-drum, the cross-sectional contour of which follows that of the space above the boiler-flues, it being, however, somewhat smaller than said space, so as to permit free The length of the steanrdrurn is nearly co-extensive with the length of the flues, and it is so arranged in the boiler as to reach from near the back of the fire-box to near the flue-sheet at the front end of the boiler; but it may be extended over the fire-box, as indicated by dotted lines in Fig. 3. This steanrdruin has an 'uprightneck, A, open at the top and pro jecting upinto the steam-dome to such height as to prevent water from flowing over into it under any position that the boiler can assume in practical work. Steam is drawn from the steamdrum through the steanrpipe B,inserted through the top of the steamdome, and reaching deep down into the steam-drum, so that the generated steam has to descend to near the bottom of the steamdrum before it can flow into pipe B. In this descending flow the water carried in suspension by the steam will be precipitated to a greater or less extent. The steam-drum is supported by cross-bars a a, which are riveted to the boiler-shell. Any other convenient or preferred means may be employed for supporting it and holding it in position.

The steam-drum is constructed with watertight heads, but it is provided with an openended pipe, 0, which projects through one of the heads into the space above the firebox to near the front side thereof, occupying the highest parts of the steanrdrum and boiler, as clearly shown in Fig. 1. The pipe 0 extends far into the steam-drum and up to about the center of its upright neck A. The exterior end of the pipe may have an upward bend, so as to run its end close up to the shell of the boiler, as shown. The pipe should he suitably fastened. This pipe 0 affords a direct passage to the interior of the steam-drum for steam generated at the fire-box end of the boiler even when the boiler is tilted so that the water seals the dome; but by reason of its length both inside and outside of the steam-drum and its elevation this pipe can conduct but little water into the steam-drum, even when the boiler is tilted so far in the other direction that the water-level rises above the extecirculation of water and steam all around it. 1

rior end of the pipe, because then the inte rior end of the pipe assumes a position above the water-level. This is illustrated by the line 2 2 on Fig. 1, which line is assumed to indicate the water-line in the boiler on ascending asteep hill, and shows that the water cannot run out of the service-pipe and into the steam-drum. It will be observed that this could not be prevented if the separator-pipe were not extended far into the steam-drum. The line to w is assumed to indicate the water in the boiler on descending a steep hill. Whatever water may enter the steam-drum through pipe 0 will be quickly evaporated. However, a blow-oft pipe, D, is provided, by means of which the water, as well as sediments, can be blown out of the steam-drum at any time. The interior end of the pipe 0, which I term the separator-pipe for the sake of distinction, may be turned up into the neck A, forming either an elbow or a goose-neck overhanging the upper end of said neck, as respectively indicated by dotted lines in Figs. 1 and 2, so-that any water entering the pipe may be blown out by the steam when the boiler assumes a more level position, and thus prevented from entering the steam-drum at all. The form of the steam-drum will vary with the style of the boiler, and the form and arrangement of the separator-pipe may also be considerably varied to suit circumstances and the views of boiler-makers. The steam-service pipe 13 may also be arranged differently;

but in all cases it must take the steam from the steam-drum.

Fig. 3 illustrates a modification of the separator-pipe, it being in this case a mere up right nozzle projecting from the steam-drum up into a secondary steam-dome at the fire-box end of the boiler. In this construction no water can flow from the water-space of the boiler into the steam-drum under any possible position of the boiler in practical work.

It will be readily observed that the steamdrum arranged in the upper part of the boiler acts not only as a steam-separator, but also as a displacement tank or drum, which takes up so much room beyond the crown-sheet of the fire-box as to prevent the water-line from falling below the crown-sheet when the boiler is tilted in descending a hill, which is a very important consideration in traction-engine boilers.

I claim as my inventioh- 1. The combination, substantially as before set forth, of a steamboiler of the locomotiveboiler type, the steam and displacement drum in the upper part thereof, having an open neck projecting up into the steam-dome, and the separatorpipe for conducting steam into said drum from the space above the crown-sheet.

2. The combination, substantially as before set forth, of a steam-boiler of the locomotiveboiler type, the steam and displacement drum in the upper part thereof, having an open neck projecting up into the steam-dome, the separator-pipe for conductiugsteam into said drum from the space above the crown-sheet, and the steam-service p1pe projecting into said drum.

In testimony whereof I affix my signature in presence of two witnesses.

ABRAHAM O. FRIOK.

WVitnesses:

WM. I-I. MiissoN, Trros. hi. NORRIS.

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