US146476A - Improvement in sectional steam-generators - Google Patents

Description

JoHN J. EoEPEn, or PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SECTINAL STEAM-GENERATORS.

Specication forming part of Letters Patent' No. 146,476, dated January 13, 1874; application tiled December 13, 1873.

To all whom it may concern:

Beit known that I, J orIN J. RoErER, of the city and county of Philadelphia, State of Penn sylvania, have invented an Improved Steam- Generator, of which the following is a speciiication: i

The object of my invention is a cast-iron steam-generator which presents an extended heatingsurtace, and which can be readily increased in capacity, the said generator consisting of two exterior cast-iron sections, A and A', and any desired number oi' interlinediate sections, B, constructed, and adapted, and

secured to each other, as shown in the vertical section, Figure l, and side view, Fig. 2, of the accompanying drawing.

The exterior sections A and A are, with the exception of being made right and left, precisely alike, each ot' these sections inclosing a space devoted to water and steam in the usual proportions. These exterior sections are carried lower down than the intermediate sections, in the present instancefso as to leave a space, D, which is open to the fire-place below, the products of combustion passing along this space., then returning through passages a a,

` formed by recessing adjoining sections, and

then turning and traversing similar passages bl b,communioating with the chimney. There may, it desired, be one or more additional return-passages for the products of combustion situated above and communicating with the rator. When the boiler is in use, the en trances to these transverse tubes may be iitted with plugs e e, which can be withdrawn for the introduction of a suitable instrument for cleansing purposes. The lower portion or leg of each of the outer sections A and A has re cesses f at suitable intervals for the purpose oi' adding to the strength of these legs, and also for increasing the heating-surface. I propose in some instances, however, to dispense with these legs altogether, and to make all of the sections of the boiler of the same length. Rows of larger tubes h are cast across the upper portion of each slab or section for the same purpose, the tubes of one section communicating with those of the other, as shown in Fig. 1. These latter tubes may main open for the passage of air, which, becoming heated, may be used for warming buildings in the neighborhood of the boiler.` The interior of the several sections communicate with each other at two points only-that is, at the upper point m., a transverse section oi' which is shown in Fig. 3, and at the lower point a, a transverse section of which is shown in Fig. 4, the sections being secured together at these two points by boltsi '11. At the point m, where the steam-spaces of all the sections communicate, maybe situated the safety-valve and the shut-oli' valve-chest, with which the steam-pipe communicates, and at the lower point n the feed-pipes should communicate with all the sections simultaneously.

It will be seen that the capacity of the generator can be readily increased by increasing the number oi intermediate sections, and that this addition can be readilyT accomplished.

I claim as my inventionl. A steam-generator, consisting of exterior sections A A and intermediate sections B, each section having tlues formed by recessin g adjoining sect-ions, as set forth.

2. The combination of the tlues a a and I) b, form ed by recessin g intermediate sections,with the transverse tubes cl and d cast in each section, all as speciiied.

In testimony whereof I have signed my name tothis specification in the presence of two subscribin g witnesses.

JOHN J. ROEPER,

Witnesses WM. A. STEEL, J. SHERBORNE SINGER.

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