US58678A - Improvement in steam-generators - Google Patents

Description

UNITED STATES PATENT OFFICE.

ESAU ROVING, OF PARKERSBURG, WEST VIRGINIA.

IMPROVEMENT IN STEAM-GENERATORS.

Specification foriningpart of Letters Patent No. 58,678, dated October 9, 1866; anicdatcd September L3, 1866.

To all whom it may concern:

Be it known that I, ESAU ROWING, of Parkersburg, in the county of Wood and State of W'est Virginia, have invented a new and useful Improvement in Steam-Boilers; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which* Figure l is alongitudinal section taken horizontally through about the center of a highpressure steam-boiler constructed according to my invention. Fig. 2is a longitudinal view taken vertically through the same.

Similar letters of reference indicate corresponding parts in both gures.

The object of this invention is to construct a steam-boiler capable of resisting a higher pressure than can be borne by steam-boilers as heretofore commonly constructed.

It consists in constructing the boiler of a series of inclined tubes having one end closed and situated above the nre-place, and the other end opening into a transverse tube of larger diameter, in which the steam generated in the said inclined tubes is collected.

To enable those skilled in the art to understand the construction and operation otl my invention, I will proceed to describe itwith reference to the drawings.

Any suitable number of wrought-iron tubes a are placed in the furnace parallel with each other and a suitable distance apart. They extend nearly or quite the whole length of the furnace, immediately below the lire-brick arch b, which forms the top of the same, and the brickwork sides of the furnace are close to the two outside tubes of the series.-

The front ends ofthe tubes a project through the front of the furnace, above the re-door c, and have wrought-iron tian ges d screwed upon them, to which, having been properly faced, the wroughtiron covers c are bolted.

The rear ends of the tubes a communicate with the transverse tube f, which is of a larger diameter than the tubes a, and has one side made thicker, in order that the tubes a may `be screwed therein.

The ends of the tube f project beyond the briclrwork of the furnace, and are provided with wrought-iron ilanges g, screwed on and faced, and to these iianges are bolted the wrought or cast iron covers h, a stay-rod, fi, passing through the center and being rmly bolted to each cover.

One end of the tube f projects through the brick-work more than the other, and it is proposed to affix the water-gage to the cover at this end, and also to have a safety-valve at the Lipper side, and a blow-out pipe at the lower side, of the pipe at the same end.

The steam may be taken from the top of the tube fat the center or any other convenient part.

On referring to Fig. 2, it will be observed that the tubes c are slightly inclined, their front ends being the lowest, so that the waterlevel with regard to the tubes shall assume the position shown by the red line in the said figure, in order that when the transverse tube f is half full of water the lower ends of the tube a above the fire shall be full of water, with a graduali y-increasin g space all along the tubes for the steam, as it is formed, to escape to the larger or transverse tubef.

By this construction of steam-boilers the steam is raised very rapidly, and the boiler itselfis capable of bearing at least tive times the pressure that boilers of the ordinary construction will resist. At the same time it is very simple and inexpensive. V

In some instances I propose to double this arrangement-that is, to have two sets of longitudinal inclined tubes, both connected at opposite sides to the same transverse tube j', and to have a fire-place at each end of the furnace, the transverse tube being in the center, midway between the two tires. In other cases l would employ two or more sets of the inclined tubes, one set above another, and but one furnace., situated underneath their lower ends, to heat them.

Having thus described the nature and object of my invention, together with the manner in which the same is or may be carried into practical eifect, I would remark that I do not claim a steam-boiler consisting of a series of tubes in itself, but

What I claim as new, and desire to secure by Letters Patent, is-

So arranging a series of inclined tubes, a, with reference to the drum f that the waterline intersecting the drum at its center' shall leave a gradually-increasin g steamspace in the tubes a from the lower or furnace end of said tubes to the point of their junction with the drum, substantially as and for the purposes setforth.

ESAU ROWING. Witnesses A. M. Moss, W. H. EARNEST.

Images