US58685A - Improvement in steam-generators - Google Patents

Description

UNITED STATEs PATENT OEETGE.

SIMEON SHERMAN, OF WESTON, MISSOURI.

IMPROVEMENT IN STEAM-GENERATORS.

Specification-forming part of Letters Patent No. 58,655, dated October 9, 1866.

To all whom it may concern:

Be it known that I, SrMEoN SHERMAN, of Weston, in the county of Platt and State of Missouri, have invented a new and Improved Steam-Generator; and I do hereby declare the following to be a full, clear, and exact description of the nature, construction, and operation of the same, sufficient to enable 0thers skilled in the art to which my invention appertains to understand and use the same, reference being had to the accompanying drawings, which are made a part of this speci cation.

This improved generator has two chambers, one within the other, and a return fire-flue intervening between them. The iiue conducts the heat or flame from the furnace underneath the outer'or annular chamber to the chimney. Water from the heater or other source is pumped into the bottom of the inner or central chamber, where it is subjected to a more intense heat than pumps will work it. Thence it passes from the top of the central chamber through two tubes or pipes down into the outer annular chamber of the steam-generator, where a sufficient supply is kept exposed to the direct action of the iire-surface below for immediate use. From thence it is carried by a revolving system of perforated troughs, which sprinkle it evenly over the exterior surface of the tire-flue, which is provided with plat-es which retain the water that is sprinkled from the troughs, and which trickles down the sides of the hot plates which divide the steamchamber from the tire-due. The water is supplied to the steam-chamber from the central chamber through two pipes, whose openings are as near as possible to the top of the central chamber, so that the clearer portion of the water is decanted off, and the mud and impurities are allowed to settle and are caught in the two receptacles below, whose valves afford means for blowing off the mud as required. Provision is also made for continuing the supply of water from the central chamber to the steam-chamber by a short pipe provided with a valve, S, operated by a handle or stem, T, provided the pumps become deranged at any time.

In the drawings, A is the outer shell of the generator; B, the furnace, and G the iiue unL derneath. D is the outer chamber of the generator 5 E, the return-flue, and F the inner chamber. G is the chimney.

The water is pumped into the inner cham ber, F, through the pipe H, which is supplied from a heater or other source.

I prefer to have the entering water heated to as great a degree as it can be by the exhaust-steam.

The chamber F, when the generator is at work, is maintained nearly full, as the water is supplied from it to the chamber D through the pipes I, whose openings are near the top of the chamber F. By this means the upper and clearer portion of the water is decanted oit1 and supplied to the chamber D, while the muddy and sedimentary portion settles to the bottom and passes through the openings VJ into the tubes K, from whence it is blown off at the mud-valves L, as required.

The heated water in the chamber does not occupy a great portion of the vertical height; but provision is made for raising and dropping it upon the hea-ted exterior surface of the Hue-plate, so that steam is rapidly generated.

The device for raising the water consists of a circular series of perforated troughs, M, which are attached to a rim or wheel, N, re`l volved by a pinion, O, whose shaft P passes through a stuffing-box in the boiler-head.

The troughs arc so suspended on pivots that they maintain their position at all points of their revolution, the water dripping through the perforations in their sides upon the outer plate of the flue, as has been stated. The latter has plates R, obliquely' attached by the edge, so as to form troughs to detain the water which trickles down the surface, in order that it may be evaporated.

The steam for the engine is taken from the upper portion of the chamber D.

One great advantage of this construction consists in the economy of weight of water, as, instead of keepin g thefiue-surface covered with water, the latter is continuously raised in comparatively small quantities and poured over the surface exposed to the heat of the iire.

The sections of the generator are tluted or corrugated, and have ribs running transversely or at right angles, for the purpose of strengthening the same against the collapsing pressure of the steam in the chamberD. The flutes tubes K and mud-valves L, for the removal of may be alternate on the adjoining section. sediment.

The engine is started by means of the iine- 2. The revolving arrangement of perforated surface independently of that exposed to the troughs for dripping the Water upon the heated. dripping action of the Water-elevator, which resurface, as described.

' ceives its motion from the engine. 3. The plates R, attached to the heated sur- Having thus described my invention, what face, for the retention ofthe water, as and for claim therein as new, and desire to secure by the purpose described.

Letters Patent, is- SIMEON SHERMAN.

1. The central chamber, F, and outer chan]- Witnesses: ber connected by the vertical pipes I, which EDWARD H. KNIGHT,

operate as deseribed,in combination with the SoLoN C. KEMON.

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