US1039524A - Exhaust-stand. - Google Patents

Description

A. J. HALL. EXHAUST STAND. APPLICATION TILED MBA, 1911.

1,039,524. I Patented se t. 24, 1912.

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ANDREW JACKSON HALL, OF CLINTON, ILLINOIS.

EXHAUST-STAND.

Specification of Letters Patent.

Application filed March 4, 1911.

Patented Sept. 24, 1912.

Serial No. 612,231.

To all whom "it may concern:

Be it known that I, ANDREW JAoxsoN I'IALL, a citizen of the United States, residing at Clinton, in the county of Dewitt and State of Illinois, have invented certain new and useful Improvements in Exhaust- Stands, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to exhaust nozzles which are employed in steam engines to assist the draft.

' The invention has for its object to provide an exhaust nozzle of this kind in which the discharge of the exhaust steam from the nozzle can be regulated so as to adapt it to different engines each of which requires a different draft.

Referring to the accompanying drawings :Figure 1 is a view in cross section of an exhaust nozzle constructed in accordance with this invention mounted in the forward end of a locomotive boiler beneath the smoke stack thereof. Fig. 2 is a side view of the parts shown in Fig. 1 in longitudinal section. Fig. 3 is an enlarged detail view of the exhaust nozzle detached. Fig. 4: is a view in vertical section of the exhaust nozzle. Fig. 5 is a cross section thereof. Fig. 6 is a plan view of the upper end of the valve in the nozzle.

The exhaust nozzle constructed in accordance with this invention is mounted in the forward end of the boiler 1 of a locomotive beneath the smoke stack 2 as shown in Figs. 1 and 2. The exhaust nozzle consists of a main body portion 3 formed at its lower end with a flange 4 and secured to the washer 5 of the locomotive by means of bolts 6 passing through bolt holes 7 in the flange 4. The body portion 3 is formed in its upper portion with a chamber 8 and with passage ways 9 in its lower portion communicating at their upper ends with the chamber 8 and communicating with passages 9 extending to the cylinders of the locomotive. The upper end of the body portion 3 is formed with a flange 10, and seated upon the top of the body portion 3 is a detachable nozzle 11 having a flange 12 located above its lower end. Seated in the upper end of the chamber 8 said flange 12 resting on the flange 10 of the body portion 3 and detachably secured thereto by means of nuts 13 which are threaded upon bolts 14 projecting from the flange 10. Exhaust steam from the cylinders passes up through the chamber 8 and through and out of the nozzle 11, thereby creating a draft in the front end of the locomotive boiler which communicates with the fire box through fines not shown. This exhaust increases the draft on the fire to the proper height to maintain the steam pressure in the boiler.

The numeral 15 indicates a wall in the lower end of the body portion 3 which forms with the inner sides thereof the passage ways 9. The wall 15 is formed with a vertical threaded passage way 16 into which is threaded the lower end of a vertical pipe 17 which extends up through and beyond the upper end of the nozzle 11. Connecting with the lower end of the passage way 16 is a pipe 18, the pipes 17 and 18 communicating with the passage way 16 and serving as a draw pipe to increase the draft on the fire when the engine is at a stand still or when it is not working steam. By means of having this pipe 17 adjustably secured in the opening 16 it can be adjusted vertically so that the distance between the end of the pipe 17 and the smoke stack can be increased and decreased as it is desired. By means of this, the draft on the fire can be regulated so that the fire will burn slowly or rapidly when the engine is standing still or not working steam.

As a second means to regulate the draft on the fire the nozzle is provided with means for increasing or decreasing the size of its discharge opening and for this purpose a valve 19 is adjustably mounted on the pipe 17 and as here shown preferably by being threaded thereon, the pipe 17 having a threaded portion 20 on which the valve 19 is rotatably mounted and in threaded engagement therewith. The valve 19 has its upper end formed with a projection 19 in the shape of a nut to which a wrench may be applied to adjust the valve on the pipe 17. The valve 19 is formed with bulging sides which may either curve longitudinally or have upper and lower inclined portions 21 whereby when the valve 19 moves downward on the tube 20 the opening in the upper end of the nozzle 11 will be enlarged, and when the valve 19 is moved upward on the tube 20 the opening of the nozzle 11 will be diminished. By this means a draft is increased by permitting a greater amount of exhaust steam to escape from the nozzle 11 or decreased by permitting a smaller amount of exhaust steam to escape from the nozzle. The increase in the amount of steam discharged from the nozzle will increase the draft on the fire which will reduce the back pressure on the cylinder and cause a saving in the fuel.

It will be seen that by means of this invention that the discharge of the exhaust steam from the nozzle may be regulated so as to increase or diminish the draft and thereby regulate the draft according to the particular kind of engine with which the exhaust nozzle is employed.

It will thus be seen that the stand is provided with two means for regulating the draft of the fire so that the stand is capable of regulating the draft no matter whether the engine is moving or not.

What I claim is In an exhaust stand of the kind described, a base having a pair of inlet ports separated by a diaphragm, said base further Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patent,

draw pipe may be varied and the position of the valve on the draw pipe be also varied independently one of the other.

In testimony whereof I hereunto afiix my signature in presence of two witnesses.

ANDREW JACKSON HALL. "Witnesses:

GEORGE T. NIOKLES, DICKERSON Woon.

Washington, D. C.

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