US409033A - Smoke-box for locomotives - Google Patents

Description

2 Sheets- Sheet 1.

(No Model.)

F. GANDY. SMOKE B0X FOR LoooMoTIVBs.

No. 409,033. Patented Aug. 13, 1889.

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(No Model.)

. 2 sheets-sheet 2. P. GANDY.

SMOKE BOX FOR LOGOMOTIVES.

Patented Aug. 13, 1889.` l

WTNESSES:

INI/EN TOR' l M N. PETERS, Phowumngmpher, whmgmn. D. c.

UNITED STATES PATENT OFFICE..

FREDERICK CANDY, `OF CINCINNATI, OHIO.

SMOKE-BOX FOR LOCOIVIOTIVES.

SPECIFICATION forming part of Letters Patent No. 409,033, dated August 13, 1889.

Application iiled November l, 1888. Serial No. 289,700. (No model.)

To all whom. it may concern:

Be it known that I, FREDERICK GANDY, a subject of the Queen of Great Britain, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain 'new and useful Improvements in Snicke- BoXes for Locomotives, of which the following 4is a specification.

My invention has for its object to provide a locomotive smoke-box having air-inlets for the admission of air to assist in the combustion of cinders and two concentric exhaustpipes communicating with the engine-cylinders and having separate and independent nozzles, which terminate in open mouths on the same horizontal plane for the purpose` of maintaining a uniform draft, relieving the engine of back-pressure, and promoting a perfeet combustion of the cinders, so that they will not gain access to the smoke-stack.

Figure 1 is a longitudinal vertical section of a locomotive smoke-box and boiler with my improvements attached. Fig. 2 is a transverse section on line @c cc, Fig. 1. Fig. 3 is a transverse section on line y y, Fig. 1. Fig. 4L is a central vertical section of my improved exhaust-pipes and nozzle. Fig. 5 is a central transverse section of Fig. 4.. Fig. 6^ is a horizontal cross-section on line b b, Fig. 5. Fig. 7 is a similar section on line u. a, Fig. 5. Fig. S is a section on line c c, Fig. 5.

1 represents the shell of an ordinary boiler, 2 tubular lues, and 3 the dry-steam feed-'pipe projecting into the smoke-box 4. 5 represents the steam-pipe divided into two branches 5', which pass down through the smoke-box for conveying steam to the steam chest and cylinders. These parts are of the ordinary construction.

In the accompanying drawings, 6 represents the base or cylinder saddle of the exhaust and steam pipes for supporting the same directly at the base of the smoke-box.

7 represents the interior exhaust-pipe connected by a suitable passage 8 to one of the cylinders.

9 represents the exterior pipe connected by passage 10 to the opposite cylinder. The nozzles I have shown constructed of a separate piece from the exhaust-pipes, provided with anges 12, resting on ianges 13 on the top of said concentric pipes. This is merelyfor convenience of adjusting different-sized nozzles.

23 represents ribs. They are placed between the two pipes or passages of the nozzles for stifening the same and holding the inner pipe in position.

In the present instance I have shown hollow stay-bolts 14, provided with air-orifices 15, passing centrally through said stay-bolts. These I provide at the bottom portion of the smoke-box, as shown by the dotted center, Fig. 1. may be employed to suit varied engine-services, and different forms of apertures may be employed for admitting the air into the smoke-box for burning up the cinders; but I deem this form the best. The stay-bolts perform another ofiice. Were the cinders burned by the admission of air into a smoke-box of ordinary construction, it would become unduly heated and burn out. a water-jacket, which also suitably heats the feed-water. This j acket-space 1G is formed by the shell 17 concentrically within the shell 1S. The stay-bolts 14. and 28 support the two shells and form a water-heating space.

19 represents the feed-pipe from injector or pump with check-valve 30, with its inner orifice terminating within jacket 16. In order to purify the Water and take pure water into the boiler7 I provide feed-pipes 20, which tap the top of the j acket-space 16 and connect with the bottom of the boiler below the fluetubes 2,by which means I accomplish two results: first, the pure Water is taken from the jacket 16 and supplied to the boiler and allows the clearing or settling of the water, the impurities passing down into the mud-drum 21, which connects with the bottom of the jacket 16, as shown in Figs. 1 and 3.

22 represents a blow-off cock for blowing out the impurities which accumulate in the mud-drum21 or bottom of the heating-space. The draft from the furnace and the consuming of cinders or carbon within the smokebox will heat the feed-Water and materially aid in purifying the same.

An important function is performed by the concentric exhaust-pipes in connection with the smoke-box air-inlets-na1nely, in maintaining a steady and uniform draft,\vhile the This I avoid by,

Any desired number of apertures IOO einders are consumed with the assistance of the air admitted through the oriiices in the periphery of the smokesbox. If the mouths of these pipes are not on the same plane, one will oauseabaol;p1essi11eon the engine withwhieh the other communicates, and the draft will not be continuous and uniform, and if the airinlets are dispensed with there will not be a perfect combustion of the cinders, nor will the draft be so free and steady as when the air-inlets and concentric exhaustpipes are both employed.

In order that the smoke-box may be cleaned, I provide a cap 24, covering a man-hole at the bottom of the box, which may be removed for that purpose. 25 represents a separate manhole for gi\f'ing access to the center portion of the fire-box. It is sometimes desirable to cover the inside of the smoke-box with a nonconductor of; heatsueh as Fire-elay, asbest-us, tbe-as indicated by dotted lines 2li, Fig. l; but ordinarily sueh uon-condncting material FREDERICK GANDY.

lVitnesses:

ROBERT ZAIINER, T. SnimoNs.

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