US1097523A - Boiler for traction-engines. - Google Patents

Description

T. J. BROWN.

BOILER FOR TRACTION ENGINES.

APPLICATION FILED 00122, 1912. RENEWED APR. 14, 1914.

1,097,523. Patented May 19, 1914.

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COLUMBIA PLANOGRAPH 60., WASHING 1m. D. 0.

THOMAS 0'. BROWN, 0]? GRAWFORDSVILLE, IOWA.

BOILER FOR TRACTION-ENGINES.

nuances.

Specification of Letters Patent.

Patented ltIay 1t), 1914.

Application filed October 2, 1912, Serial No. 723,620. Renewed April 14, 1914. Seria1 No. 831,795.

To all whom it may concern:

Be it known that I, TrroMAs J. Brown, a citizen of the United States, residing at Crawfordsville, in the county of "Washington and State of Iowa, have invented certain new and useful Improvements in Boilers for Traction-Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to boilers for traction engines; and it consists in certain pipes provided with valves and connected to the steam space of the boiler at the opposite ends thereof so that dry steam can be obtained irrespective of the level of the ground over which the engine is traveling.

In the drawings, Figure 1 is a side view of the boiler of a traction engine, partly in section, constructed with steam pipes and valves according to this invention. Fig. 2 is a cross-section taken on the line ww in Fig. 1. Fig. 3 is a partial view similar to Fig. 1, and illustrates a modification of the arrangement of the steam pipes.

The boiler is provided with a shell 2, a fire-box 3, a smoke-box 4L, and fire-tubes 5 between the fire-box and smoke-box. All of these parts are of any approved construction. The dotted line 7 indicates the normal water-level when the engine is traveling on level ground. The dotted lines 8 and 9 indicate the water-levels when the engine is traveling up and down a steep hill respectively.

In order to prevent the water from passing from the boiler with the steam when the engine is traveling up-hill or downhill, a steam pipe 10 is secured longitudinally of the boiler from one end portion to the other and its ends communicate with the steam space at the respective ends of the boiler. An outlet pipe 11 is connected to the intermediate portion oi the pipe 10 at any convenient part of its length, and the steam pipe 10 may be formed in sections which are connected together and to the outlet pipe 11 by a T-junction 12.

A valve 14 is provided for closing the front end of the steam pipe 10, and a valve 15 is provided for closing its rear end, each end of the pipe 10 being provided with a suitable valve-seat. The two valves 14 and 15 are connected together by a conpling-rod 1G, and an extension of the cou pling-rod forms a valve-operating rod 17. A lever 18 is pivoted to the shell of the boiler and is connected to the rod 17, but any other approved means may be used for operating the valvc-rod.

The steam pipe 10 is preferably arranged inside the shell of the boiler, and the valverod 17 passes through a stuliing-box 19 so that steam from the boiler cannot leak out around the valve-rod. The steam outlet pipe 11 is secured in a hole in the shell of the boiler under and communicating with a steam dome 20, and the steam dome 20 is not placed in direct communication with the steam space of the boiler as in boilers as ordinarily constructed. Condensed steam or water in the steam dome 20 drains back through the pipes 11 and 10. The boiler is provided with a steam regulating-valve 0r stop-valve 21 of any approved construction.

The valves 14 and 15 are adjusted and secured so that both ends oi the steam pipe 10 are open simultaneously when the valves are at their middle positions. When the engine is going up-hill and the valve 15 at the rear end of the pipe 10 is submerged, the valve 15 is closed by hand and the valve 14 is opened, and when the engine is traveling downhill the valve l l is closed and the valve 15 is opened. In this manner the steam engine is always supplied with dry steam irrespective oi the level of the ground.

In the modification shown in Fig. 3, the steam pipe 10 is arranged outside the boiler, and its end portions are connected to the shell of the boiler by headers 24: and 25 which form extensions of the steam space oi the boiler shell. The valve rod 17 is a continuation of the couplingrod 1G, and no levers have to be placed in the steam space of the boiler where they are liable to be injured by deposits of scale from the water, and where they are ditiicult of access and inconvenient to repair.

What I claim is:

1. The combination with a traction engine boiler, of a steam pipe arranged longitudinally or the boiler with its ends communicating with the steam space, lift valves for closing the ends of the steam pipe, a coupling-rod extending through the steam pipe and having the said valves secured to it, said coupling-rod having an extension which projects from the steam space of the boiler :10

end plate of the boiler, a dome provided with a steam outlet and secured to the boiler out of direct communication with its steam space, and an outlet pipe connecting the steam space of the dome with the said steam pipe between its valves.

In testimony whereof I have aflixed my signature in the presence of two witnesses. THOB IAS J. BROWN. Witnesses NETTIE BROWN, EDITH HoUGH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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