US537737A - waterous - Google Patents

Description

(No Model.) I 2 Sheets-Sheet 1. G. H. WATEROUS. STEAM BOILER Patented Apr. 16, 1895.

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NrrE STATES PATENT Grinch.

CHARLES H. WATEROUS,OF BRANTFORD, CANADA.

STEAM-BO ILER.

SPECIFICATION forming part of Letters Patent No. 537,737, dated April 16, 1895.

Application filed May 14, 1894. Serial No. 511,237. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES H. WATEROUS, of Brantford, in the county of Brant, Dominion of Canada, have invented certain new and useful Improvements in Steam-Boilers; 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 contemplates certain new and useful improvements in boilers, having reference more particularly to boilers of traction engines.

One of the objects of the invention is to dispense with the dry pipelocated within aboiler near the top thereof and from which the steam is taken off; and also to enable the steam bein g taken off farther away from the water than is now possible with the dry-pipe.

A further object is to provide improved means for heating the feed-water before trance to the boiler.

The invention consists in providing the boiler with an elongated narrow, shallow dome or chamber extending longitudinally along the top of the boiler over near the entire length of the hot-water chamber the inclosed portion of the boiler casing being provided with holes or openings through which steam can pass to said elongateddome.

The invention further consists of a boiler having the fire-box or chamber encircled by a water-leg into which the water is fed before passing to the water-chamber of the boiler.

The invention also comprises the details of construction, combination and arrangement of parts, substantially as hereinafter fully set forth and particularly pointed out in the claims.

In the accompanying drawings:-Figure 1 is a longitudinal sectional view of aboiler constructed in accordance with my invention, parts being shown in side elevation. Fig. 2 is a transverse sectional view thereof on the linear-00, Fig. 1. Fig. 3 is a top plan view.

In the boilers of traction engines, as well as in others, a dry-pipe is usually placed Within the boiler close up under the top of the shell and this pipe is provided with small holes through which the steam is taken and conveyed by the pipe into the cylinder.

The ohjection to this form of dry-pipe is that it often becomes loose, especially in traction engines and being within the boiler access cannot be readily had hitherto. Then again steam can be taken off only from the dome or cylinder. By means of my invention these objections are successfully obviated.

In traction engine boilers much difficulty is experienced by the sudden cooling of the water in the boiler by the supply of cold feedwater, and especially is this so when the water in the boiler reaches a low stage before addit-ional water can be conveniently supplied. By means of my invention an extra quantity of water is constantly ready to be supplied to the boiler in a heated state, thereby avoiding the waste of time consequent upon the too great lowering of temperature of the water in the boiler.

Referring to the drawings, A designates the boiler which may be of any preferred form of general construction, that shown being of the design employed on traction engines.

Bis an elongated dome or chamber extended longitudinally along the top of the shell of the boiler to which it is securely fastened by bolts or rivets I) passed through its flanged edge I). The dome or chamber can be of any desired width, according to the capacity desired, but in all instances it is shallow and comparatively narrow and is extended longitudinally over most of the length of the boiler, that is, it is located over nearly the entire length of the hot-water confining chamber. In that portion of. the shell of the boilerinclosed by this dome B are formed numerous small holes or openings b preferably arranged in two separate rows. Through these openings steam is permitted to pass from the boiler to the dome or chamber. An opening 0 is shown as being tapped at one end of this dome or chamber and through this the steam may be taken. off; but one of the advantages of myinvention is that this opening can be formed at any desired point, either at the center or the other end of the dome. Hence the steam can be taken off at any desired point.

0' is an outer, cylindrical casing, which entirely encircles the fire-box or combustion chamber D at the rear end of theboiler,forming a water-leg or chamber 01. At the bottom of this casing is a covered hand-hole cl, and

at the top is a dome or elongation at up into which extends a stand-pipe d which is passed through an opening in the boiler-shell or casing and thence curved downward on one side parallel with the wall of the fire-box or combustion-chamber, the extreme lower end of said pipe being extended through an opening in the crown-sheet: cl at a point below the top row of flues 6. Suitable coupling-nuts 6 hold this pipe in the respective openings in the boiler shell and crown-sheet. The Water is fed to this water-leg or chamber through a pipe E opening into the casing 0 near the bottom, the water being supplied under the pressure of an injectorlorapump P, each of which has its steam supply from the elongated dome or chamber. Suitable valves are provided for the series of pipes connecting the injector and pump with the boiler. Water being fed to the water-leg or chamber will pass up around both sides of the fire-box and thence up into the dome in the top of the inclosing casing and down through the stand-pipe into the boiler. In this way the water-is thoroughly heated before passing to the boiler and the lowering of the steam pressure is thus successfully avoided.

The advantages of my invention are appar cut to those skilled in the art to which it appertains.

It will be seen that by means thereof the dry-pipe, so to speak, is placed on the outside of the boiler, thus getting the same that much farther away from the water. Then again there is little or no danger of the dry-pipe becoming loose, no matter how rough the ground traveled by the traction engine, and in the event of any loosening the parts being easily accessible can be readily tightened or made firm.

The invention amounts substantially to placing the dry-pipe on the outside of the boiler and dispensing with the dome or cylinder, since the elongated dome or chamber serves the double purpose of the interior perforated dry-pipe and the exterior dome communicating therewith.

It will also be seen that the heat of the tireboX or combustion chamber is utilized for heating the feed-water and that by means of the Waterleg or chamber a maximum supply of water can be kept constantly at hand ready to be fed to the boiler, proper.

I claim as my invention- 1. A boiler having on the exterior of its shell over nearly the entire length of the hotwater chamber, with which latter it communicates, substantially as and for the purposes set forth.

2. A boiler having its shell provided with holes or openings in its top over near the entire length of the hot-water chamber, and an exterior shallow narrow elongated dome inclos-ing said holes or openings, and extended longitudinally along the top of said shell, substantially as and for the purpose set forth.

, 3. The boiler herein described having its shell provided with holes or openings in its top over nearly the entire length of the hot Water chamber, the narrow shallow dome or chamber extended longitudinally over said shell and having flanged edges secured to the latter outside of or beyond said holes or openings and provided with an upperopening, substantially as and for the purpose set forth.

4:. A boiler having a water-leg or chamber surrounding the fire-box or chamber, and a stand-pipe leading from the upper portion of said chamber into said tire-box and then into the boiler, as set forth.

'5. A boiler having an outer casing encircling its fire-box or chamber and forming a water-leg, a lower supply pipe, and an upper stand-pipe extending up into said water-leg and leading therefrom through said fire-box and into the water compartment of the boiler, substantially as set forth.

6. A boiler having-an outer casing encircling its fire-box or chamber, said casing having an upper dome-or elongation, a lower water-supply pipe, and a stand-pipe extending up into said dome or elongation and opening at its lower end into the water-chamber of the boiler, substantially as set forth.

7. The herein-described improved boiler having itsshell provided with holes or openings in its top, an elongated dome or chamber i-nclosing said holes or openings, a casing encircling the fire-box or chamber having an upper dome or elongation, a lower water-supply pipe, and an upper stand-pipe extended into said dome or elongation and opening at its lower end into the water-chamber of the boiler, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

O. H. VVATEROUS.

Witnesses:

JESSIE MoRIoE, LETTIE MARTYN.

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