US96067A - Improvement in steam-g-enerator - Google Patents

Description

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sLLoYD WmeAND, or PHILADELPHIA, PENNSYLVAMA.

Letters Patent No. 96,067, dated October 19, 1869.

IMPROVEMENT IN STEAIVLGENERATOR.

The Schedule referred to in these Letters Patent and making part of the same.

To all @cham it may concern:

Be it known that I, S. LLOYD WIEGAND, of the city and county of Philadelphia, have invented certain additional new and useful Improvements in the Steam-Generators for which Letters Patent numbered 67 ,621, and issued August 6, A. l). 1867, were granted to me by the United States of America.

The nature of my invention consists in an improved form `of tank, so arranged as to have greater steam and water capacity, and to be more convenient of access for inspection, cleaning, and repairs.

A provision is also made in this invention for a more free intercommunication between the several tanks of which the generator is composed, so as to facilitate cleaning by blowing o', and a more uniforlnwatersupply in all the tanks. At the same time, the cost of production and labor of erection are materially diminished by-this invention.-

In addition tothe above advantages, this invention .embraces an improved mode of distributing the draught of the furnace, so as to heat the steam-generator more equally in all its parts, thus obtaining greater steamgenerating capacity, with a diminished fuel consumption. A

The precise nature of my invention will more fully appear in the following specification, and drawings thereto annexed, which I do hereby declare to be a full, clear, and exact description and representation thereof.

The saine let-ters of reference apply to the same partsl in the several figures.

Figure l is a sectional elevation.

Figure 2 is a front elevation.

Figure 3 shows a vertical section of the feed-pipe, and the end of a tank as connected thereto. Figure 4 shows a plan ofthe parts embraced in Figures 5 and G, respectively, show a vertical section and a plan of the caps applied tothe lower ends of the tubes', and the supports for the internal tubes.

A represents the steam-drum, connected with which,

by means ofthe pipes U, inserted near the centres 0f their tops, are several tanks,-marked B. the tanks Bare convex.

Frein the bottoms of the tanks B hang the tubes C, containing the internal or circulating tubes D, which pass through the perforated plate F in the tank B.

' The ends of the .tanks B are not made, as heretofore, perpendicular, but are inclined, so as to ai'ord easier access to the interior when the hand-hole plates V are removed; and when several beds of generators are built-close together, the screw ybolts and nuts for securing the hand-hole plates V are more easily accessible. y

The lower ends of the tubes C are closed by the caps I, in which caps I are placed frames K, to support the inside or'circulating tubes 1).

The frames, or supports K are madeeither of wire or sheet-metal, although castings have been used for this purpose with satisfaction. Their function is to 'hold up the internal tube D concentric with the tubes C, and permit a free flow of water from the tubes I) into the caps I.

Upon one end of each tank B there is formed a nozzle, W, which lits into an aperture, X, inthe feedpipe F, to which pipe F the several tanks are secured by screw-bolts G, with nuts and headsyfitting in the pockets H in the feed-pipe F.

The tanks B, thus arranged and connected, have a free and direct communication with each other through the pipe F and the tubes U and drum A. A uniform level of water is maintained in them when in use, and they are rapidly emptied in blowing off through the pipe F.

The tanks B should be made of such dimensions asnot to crowd each other when heated and the pipe I is cold. In this way, an ystrain on the joints, between the pipe F and the nozzles \V of the tanks B, from expansion and contraction, is avoided, the elasticity of the tubes U relieving any differences between the expansion of the steam-drun'i A and the tanks B.

The furnace O is made directly under the caps I of the generator, and is fed by the door R,'and the fuel supplied with air from the ashpit Q, between the grates I".

Air may he heated and admitted above the grate in the same manner as in gas-consuming stoves. and furnaces now in general use.

The gaseous products of combustion pass tothe chimney through the fines L and S, iu the wall M. They do not, however, pass in a large volume, but are divided by passing through the perforations N, in the upper portion of the wall M.

The practice pursued in the erection and use of this invention has been to make several rows of perforations, those heilig largest and most numerous at the top, and whenever the draught was found to be excessive, to reduce it byplugging up theperforations,

beginning with those lowest down, until a satisfactory adjustment ofthe draught was obtained.

In some cases, the front wall, over the door, was made to project inward, as at T, in iig. 1, thus form- 4ing a chamber, Y, which I believe to he useful in supplying heat to the upper portions of the front tubes.

In all other respects but those hereinbefore described, this steam-generator and furnace are similar to the one described and patented in patentnumbered 67,621, issued August 6, A. I). 1867.

What I cla-im as my invention, and desire to secure as such by Letters Patent, is-

1. The tank B, constructed as shown and described 2. The feed-pipe F, when enhued and connected In testimony whereof, I have signed this specificawith the tanks, substantially as shown and described. tion, and the drawings therein referred to, in the presl3. The separate supporting-pieces K for the eircuence of two subscribing witnesses;

lating tubes, in combination with the caps, as shown S. LLOYD WIEGAND. and described. Witnesses 4. The chamber Y, with the defleetor T, arranged WM. P. THOMPSON,

substantially as shown and described.

EDWARD WILLIAMS.

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