US415959A - Smoke-consuming furnace - Google Patents

Description

(No Model.) asneets-shem 1. D. GLBGG.

SMOKE CONSUMING FURNAGE. N0. 415,959.. Patented Nov. 26, 1889.-

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D. GLEGG. SMOKE CONSUMING PURNAGB,

No. 415,959. Patented Nov. 26, 1889.

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UNITED STATES PATENT OFFICE.

DAVID LEGG, ()l. 'IIIILADEIJIIIA, PENNSYLVANIA.

SMOKE-CONSUMING FURNACE.

SPECIFICATION forming part of I..-etters Patent No. 415,959, dated November 26, 1889.

Application filed August 29, 1889. Serial No. 322,326. (No model.)

To (1, 1127110111 it may concern/1.:

' 3e it known that 1, DAVID ("LEGG, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented a Smoke-(ionsuming Furnace, of: which the following is a specification.

The object of my invention is to construct devices for attachment to locomotives, by which the smoke and cinders are carried from the stack into the ash-pit and there consumed.

In the accompanying drawings, Figure 1 is a longitudinal section of suffieient of a locomotive to illustrate my invention. Fig. 2 is a transverse section through the smoke-stack on the line 1 2, Fig. 1. Fig. 3 is a transverse section on the line 3 at, Fig. 1.. Figs. 4 and 5 are sections of the smoke-stack on the line 5 6, Fig. 2, showing the draft-regulator in different positions. Fig. 6 is a perspective view of the upper portion of the stack. Fig. 7 is a section of the stack on the line L8, Fig. 1; and Fig. 8 is a view 01' a modified form of stack.

A is the boiler of the locomotive; B, the combustion-chamber; the ash-pit, and I) the grate.

I) is the smoke-box, having the usual exhaust-nozzles from the cylinders, and F. is the stack. The stack in the present instance is of the peculiar form shown in Figs. 1 and 2,7

and is provided with three passage-ways c c e The central passage-way e communicates with the smoke-box I) at the bottom and communicates with the downflues c e at the top. A hood F is placed over the upper ends of the fines and has dividing-plates ff, which pass down each of the fines, so that the smoke and cinders from the combustion-chamber pass up the central flue and are guided down the outer fines e e by the hood F. The side flucs communicate with a longitudinal flue E through passages one at each side of the smoke-box. The passage E extends to and communicates with the ash-pit, as shown in Fig. 1, so that any smoke of cinders that pass through the passages c, a, and E are .directed into the aslrpit, the larger cinders falling to the bottom of the ash-pit, while the smoke and lighter cinders pass through the fuel on the grate I) and are consumed.

In order to create sufficient draft to carry the cinders and smoke into the ash-pit, I provide a f unnel-shaped head G, situated at the upper end of the smoke-stack. This head has a flaring mouth g, and is preferably provided with a screen 9. On the upper portion of the head is an opening 71, provided with a valve III, hinged at h. This valve has an arm 78*, which is connected, through the me dium of rods 1' and a bell-crank lever i, with a hand-lever I in the cab of the engine, so that when the locomotive is standing-as, for instance, at a station--the engineer can raise the valve ll and permit the smoke to pass out of the stack. As soon as the engine pulls out from the station the engineer reverses the lever I, thus closing the valve II, so that air passes through the head G and into the side passages e 6 thus causing a forced draft and forcing the cinders and smoke into the ash-pit.

To increase the draft where circumstances require, I cut an opening a in the front of each side passage 6 e and insert .in the opening pivoted slats a, connected after the manner of a whidow-blind, one of the slats having an arm ct linked to a lever a, which in turn is connected to the rod 5, so that when the valve ll is closed, as shown in Fig. 4, the slats cause the air to pass downward into the side flues c 6 and thus add to the force of the draft in carrying the cinders and smoke to the ash-pit; but when the valve is raised to the position shown in Fig. 5 the slats are reversed and the air is permitted to pass upward into the side flues e 6 thus aiding in carrying the smoke out through the top of; the stack. These slats can be worked independently of the Valve II, if desired, so that they can be closed when it is required to cut oh. the air through the openings a.

In the modification shown in Fig. 8,instead of the down passages being at the sides of the central passage 6, said down passages are in front and rear of the central passage, and in this case only the front down passage is provided with slats.

I claim as my invention 1. The combination of the combustion chamber and ash-pit with the smoke-stack open. at its upper end and having communieating, up and down fines with a deflectinghood, and a valved inlet-opening in the clownllne, substantially as described.

2. The combination of the smoke-stack pro- 5 Vl(l0(l with up and down lines, the deflectinghood, the head having an air-inlet opening;- eon'nnnnicating with the downflnes, and a valved opening in the upper portion of said hoad,an l niecl'ianisin 'i Ol' operating thc'valve m from the cab of the engine, substantially as described.

!l. The eo1nl' ination ol the Slil0l e-stacl having; up and down fines with openings in said tlOWlilllflCS, and slat-s in each of said openings 15 for directing air into the stack and creating a draft in the downfincs for carrying the smoke to the ash-pit, substantially as lescribed.

4. The combination of the stack having up 2 and (Town lines, openings in said downfines with pivoted slats in said openings, said slats being controlled from the cab of the engine, so as to regulate the draft, snbst-antialty as described.

5. The combination 0! thesmoke-stack, llnup and down lines therein a valved opening to this specification in the n'esence of two szll 5 scribing witnesses.

l i\\'ll) (liltmt Witnesses:

ll ENRY l lows m, l'lAl'lllY Siu'rn.

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