US429228A

US429228A - Air-feeding device

Info

Publication number: US429228A
Authority: US
Publication date: 1890-06-03
Anticipated expiration: 1907-06-03

Description

(No Model.)

J. BURNS.

AIR FEEDING DEVICE.

Patented June 3, 1890.

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JOHN BURNS, OF CHICAGO, ILLINOIS.

AIR-FEEDING DEVICE.

srncxnronrxon forming part of Letters Patent No. 429,228, dated June 3, 1890.

I Application filed January 22, 1890. Serial No. 337,676. (No model.)

To all whom it may concern:

Be it known that I, JOHN Bonus, a citizen of the United States, residing at Chicago, in the county of Cool; and State of Illinois, have invented a new and useful Air-Feeding Device, of which the following is a specification.

Thisinvention has relation to improvements in locomotives, the objects in view being to prevent the entrance of snow, ice, and sleet into the ash-pan together with cold air, whereby a reduction of temperature results, to aid combustion, and intensify the heat rising from the fire-box.

With these general objects in view the invention consists in a cylinder inclosing the smoke-box of the locomotive and having its front end open and projecting beyond the end of the smoke-box to induce air to enter therein, in pipes leading from the cylinder to the ashpan and to an air-chamber located at the side of the fire-box, and in a series of tubes communicating with the interior of the fire-box and the chamber.

The invention consists in other features of construction, hereinafter specified, and particularly pointed out in the claims.

Referring to 'the drawings, Figure 1 is a side elevation of a locomotive provided with my improvement. Fig. 2 is a front elevation of the same; Fig. 3, a transverse section on the line through the fire-box.

Like numerals of reference indicate like parts in all the figures of the drawings.

1 represents the boiler of the locomotive, which is of the usual construction, 2 the smokechamber, and 3 the fire-box, and under the latter is located the imperforate ash-pan 4:. The walls of the fire-box are perforated or provided with opposite openings 5, and extending from one to the other are tubes or cylinders 6, (in this instance three in number,) at each side of the fire-box, the tubes terminating at their inner ends above the fire-bed. The outer ends of the cylinders are covered by a longitudinally-disposed box or chamber 7, and the inner ends of the tubes are preferably provided with perforated diaphragms 8.

The smoke-box 2 of the locomotive is encircled by a cylinder 9, preferably formed of sheet metal and arranged eccentric with the smoke-box, the outer edge of the cylinder projecting beyond the smokebox and havingits intermediate space covered partially by a curved rim or plate 10. By the provision of the cylinder an air-induction chamber 11 is provided, and as the cylinder is closed at the rear end and snugly fits the boiler-casing, as at 12, the air will form a cushion within the chamber 11, as will be readily apparent. The rim or plate 10 fits and partially closes the front of the space or chamber 11, there remaining after the rim or plate is in position an induction-opening 10*, through which air enters the chamber 11. From each side of the cylinder there leads to the rear an air-pipe 13, which communicates with the interior chamber at its front end and at its rear end terminates in the longitudinal box or airchamber 7, that covers the outer ends'of the small air-cylinder. From each of the chambers or boxes there depends an air-pipe 14, the lower end of which extends into the im-= perforate ash-pan, thus opening communication from the ash-pan to the air-chamber and from the air-chamber to the air-receiving cylinder. The smoke and products of combustion passing into the smoke-box tends to heat the air within the receiving-chamber, and the same passes off at its warmest point through the air-pipes into the air-chambers at the sides of the fire-box, where it is fed over the fire and into the box, the remaining portion of the air passing through the depending pipes and into the ash-pan, where it is diffused and passes up through the grate to give draft to the fire. In this manner the fire-box is constantly fed with partially-warmed air, which induces combustion and intensifies the heat without reducing the temperature of the fire-box by the admission of cold air through openings in the ash-pan, together with sleet, rain, &c.

Having described my invention, what I claim is l. The combination, with a locomotive, its fire-box, and an imperforate ash-pan, of an air-receiving chamber located at the front end of the locomotive, opposite air-chambers secured to the sides of the fire-box and commu nicating therewith, and opposite pipes leading from the air-receiver to the air-chambers and from the air-chambers to the fire-box, substantially as specified.

2. The combination, with the locomotive having a fire-box provided with double walls,

Ice

of cylinders connecting the walls and provided with perforated diaphragms, boxes forming chambers secured to the sides of the fire-box and covering the outer ends of the cylinders, an air-receiving chamber located at the front end of the locomotive, and opposite pipes leading from the chamber and communicating with the air-chambers of the fire-box, substantially as specified.

3. The combination, with the locomotive and its fire-box, of a concentrically-arranged cylinder 9, inclosing the smoke-box of the 10- comotive and forming an intermediate airreceiving chamber partly open at its front end and closed at its rear, pipes 13, leading from the rear end of the cylinder, opposite boxes secured to the sides of a fire-box and communicating with the pipes, cylinders connecting the boxes with the fire-box, and dia phragms mounted in the inner ends of the cylinders, substantially as specified.

4. The combination, with a locomotive the fire-box of which is provided with an imperforate ash-pan, of a cylinder inclosing the smoke-box of the locomotive arranged eccentric therewith and having its front edge projecting beyond the same, and acurvcd rim for partially closing the space between the cylinder and fire-box, and opposite pipes leading from the cylinder to the ash-pan, substantially as specified.

5. The combination, with the locomotive and its fire-box, of a concentrically-arranged cylinder 9, inclosing the smoke-box of the 10- comotive and forming an intermediate airreceiving chamber partly open at its front end and closed at its rear, pipes 13, leading from the rear end of the cylinder, opposite boxes secured to the sides of a fire-box and communicating with the pipes, and the imperforate ash-pan 4, having communication with the pipes 13, substantially as specified.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in presence of two witnesses.

JOHN BURNS.

Witnesses:

MARGRET HAMMES, MARY A. OEHMEN.