US522268A - Steam-trap - Google Patents

Description

(No Model.) JI MCKE'LLAR.

STEAM TRAP.

, Patented July s, 1894.

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,t UNITED STATES 'PATENT OFFICE,

JOHN MOKELLAR, OF SAN FRANCISCO, CALIFORNIA.

, STEAM-TRAP.

VSPECI-FICAZLIIO1\T forming part of Letters Patent No. 522,268, dated July 3,' 1894. v Appliquer nea December 20,1893. sonal No. 494,151. (nomas.)

To @ZZ whom/t may concern: v

Be it known .that I, JOHN MQKELLAR, a citizen of the United States, and a resident of the city and county of San Francisco, State of California, have invented certain newand useful Improvementsin Steam-Traps; and I hereby declarev the following specication and the drawingstherewith to be a full, clear, and exact description of myimprovements aforesaid. v

My invention relates to what are called steam traps, for collecting and discharging condensed water formed in steam pipes or vessels by liquefaction, and toc'ertain improvements 0n steam traps, for which Letters Patent of the United States, No. 481,507, were granted to me on' the 23d day of August, 1892.

My present invention consists in adapting my improved steam traps to the high pressures employed at this day, especially for marine purposes; also adapting the V'apparatus to closed rooms without objectionable radiation of heat, and to lmeans of cleansing and operating the connecting pipes, with other features that will be fully explainedin connection with the accompanying drawings, in which Figure 1 is a plan view of a steam trap made according to my improvements. Fig. l2 is a side elevation of the same trap taken on the plane at an angle of ninety degrees with respect to Fig. 1. Fig. 3 is a cross section on the line z--z of Fig. 4. Fig. 4 is a vertical section on the line y-y of Figs. land 2.

Similar letters of reference are employed to designate like parts of the dierent figures of the drawings. p

The main-containing vessel A is cylindrical in form, open at the top to receive the covering plate B, which is bolted to a iiange C in the usual manner. A corresponding iiange C2 is formed around the bottom of the vessel A and between these lianges C C2 is a covering. D` of asbestus or other fibrous non-conducting material, and around this a covering of wood D2 madegin staves, and secured by metallic bands c, as seen in Fig. 2, or a covering of sheet metal, such as Russia iron or brass, so the exterior of the apparatus is in contour a plain symmetrical cylinder as! shown. In this vessel A is an open top oat E, guided at the bottom by ledges e cast on -the interior ofthe vessel A.- `-Iri the bottom .of 4thistloat Eis fastened a stem F that eX- tends up to the conical pointed valve G, the two being joined by a loosely-fitting socket and a cross pinvm, as shown in Fig. 4.

The valve guide,- valve seat and escape aperture I are. combined in one member K, screwed into vthe main plate .I of thecoverB, as shown. In the sides of the member K, around the valve G, are a series of inlets or apertures n, opening diagonally upward, through which the escape water passes without causing the usual noise that occurs when there is a fixedl body of; wateraround such valves. vThe inclosing tube L is also fastened to the plate J o f the top B, and serves to draw the waste water from the bottom of the iioat vessel E. A' cock M is also provided for emptying the main vesselAA, as seen in Fig. 4.

l Steam and water enter the trap. by the pipe N, ai1'd'4 after passing the cock Of enter the chamber P, formed in the main cover B, the water draining down through theapertures o into the float vessel E and the main vessel A, the latter being all the time filled, so the buoyant action -of the float vessel E holds the valve G shut until the vessel E also tills, then thisiioat vessel E sinks by its gravity, opening the valve G and discharging the accumulated waterthrough the aperture I into the chamber P, and out through the outlet pipe N3, the iioat vessel E, rising and closing the valve G when the buoyancy is sufficient. These latter described features pertaining to the float, escape valve, and connected parts, are embodied in my Letters Patent hereinbefore referred to,land do not, therefore, constitute a part of my present invention.

Referring now to the steam and water ducts on the top of the trap, the main cover B is made with two chambers P and P2, the former communicating with the inlet pipe N', and the second chamber P2, with a blowlthrough pipe N2, also with the regular outlet pipe N3. The passage of steam through these chambers and'pipes is regulated by the cocks O and O2. These cocks O O2 have ways or ports corresponding to the marks s on the y hand wheels I-I H2, the one O having three ports or ways, and the one O2 having two ports or ways, as indicated in Fig. 4. In the position shown in Fig. 4 these cocks O' O2 are adjusted in the normal working position, the inlet pipe N being open to the chamber P', and the outlet or waste pipe Ns being open to the chamber P2, the blow-o pipe N2 being closedeachway. If the eoelrO'isturned ninety degrees to the right this will open communication between the inlet pipe N and the blow-olif pipe N2 by means of the cross pipe Q, and steam or water is discharged directly from the pipe N through the pipe N2, usually to a tank, the open air or outboard on vessels. This is what I term the blow-through position. If the cock 02 is turned ninety degrees to the left, so its two ports s are in communication with the cross pipe Q and the chamber P2, this opens communication between-the inlet pipe N and cross pipe Q to the chamber P2, and consequently to the regular discharge pipe N3, so that the water or steam escapes to a condenser, hot well or other place Where the regular waste water is commonly conveyed. In this manner the inlet pipe is at pleasure put in communication with the main vessel A, the blow-ofi' pipe N2, or the waste pipe N3, as is required in the case of naval vessels, or other uses where circumstances are the same.

The bottom R of the main vessel A is made convex, as shown in Fig. 4, so as to withstand high pressure, the walls, cover and all other parts being made proportionally strong.

The coverings D D2 prevent objectionable radiation of heat, so the trap can be set in an engine room or other closed space without discomfort to attendants.

I claim- 1. In a steam trap, a main containing vessel with a iloat vessel and escape valve, as herein described; a chambered main cover having inlet, blow-through, and Waste-water pipes communicating with the chambers in the cover, in the manner shown, multi-ported cocks to change the flow ofA steam or Water from the inlet to either the blow-oli or wastewater pipes, in the manner substantially as described.

2. In a steam trap,a main containing vessel with a iioat vessel therein; a chambered cover with an inlet chamber having holes in its bottom for the discharge of water into the main containing vessel 5 connecting pipes, as herein shown;cocks to connect the inlet pipes with the interior of the main containing vessel, and with a waste chamber in the cover, and also With a direct blow-olf pipe, so steam and water can be led into the main vessel and ioat, into the Waste chamber in the cover, or discharged through a blow-olf pipe without entering the main vessel or the chambers in its cover, substantially in the manner described.

3. In a steam trap, a main containing vessel with a chambered cover as herein shown, connecting pipes for inlet, blow-otf and Waste Water, with double and treble Way cocks to connect the several pipes andchambers, so the inlet steam can enter the trap, be blown off direct, or through the chambersV in the cover of the main vessel, in the manner sub stantially as described.

In testimony whereof I have hereunto afxed my signature in the presence of two Witnesses.

JOHN MCKELLAR.

Witnesses:

ALFRED A. ENQUIST, WILSON I). BENT, Jr.

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