US1505630A - Reversing-valve mechanism - Google Patents

Description

Aug. 19 1924.

N. F. EGLER HEVERSING VALVE MEcHANIsM 1923 2 Sheets-Sheet l Filed June 1,

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` INVENTOR Aug. 19, 1924. 1,505,630

N. F. EGLER REVERS ING VALVE MEQHAN SM Filed June 1, 1923 Shoots-Sheet 2 FIG. 2

@WQ-W Patented Aug. 19, 1924.

f istante NICHOLAS F.' EGLER, OFGHICAGO, ILLINOIS.

nEvEnsrNG-venvn M-ncrramsraj Application filed June 1,

To all whom t may concerne: z

Be it known that I, Nrorronas F.y EGLER, a citizen of the United States, andresident of Chicago, in the country of Cook and State of Illinois, have invented a new and useful In'iprovement in Reversing-Valve Mechanism, and I do hereby declare the following to vbe a full, clear, and exactdescription thereof. f K

My invention relates to a reversing valve mechanism for use inconnection with open hearth or like furnaces. f

I-Ieretofore it has been generally custom-y ary to employ a pair of valves usually of the mush-room type, the valvesbeing so arranged that when one is open ther other is` closed. The open valve is in the direct line of the hot gases, and is subjectedto an in tense heat which reduces the life ofthe valve and makes repairs and substitutions of frequent occurrence.M

The object of my invention is to"provide a construction in which asingle valve is em f ployed covering' only onev flue at a time, the said valve being always in closed position and low down in its seat, so that ity is'not in the direct path of the hot gases, consequently is not subjected to the wear and tear caused by the intense heat.

In the accompanying drawing, Fig. 1 is a vertical elevation of a portion vof a suitable furnace showing my invention applied thereto; and Fig. 2 is a section'on the line 2 2, Fig. 1. i

In the drawings the numeral 2 designates the gas inlet flue, 3 the stack-flue and 4; the furnace-fine. A. hood or boX A providedy for covering the above-designated fines, and by means of which the reversing of the gas or air and the waste gases is accomplished under a single hood or box. n

The reversing valve 5 is preferably of a low flat construction, and may be water-v cooled as illustrated, or if desired may be formed of a highly refractory material. The valve is provided with the flaring portion 6 which is adapted to enter one of the water-seal wells 7 surrounding the flues 2 and 3.

Vhere the water-cooled valve is employed a flexible pipe 8 is employed-which permits of the movement of the valve from one flue to the other as will more fully hereinafter appear. The pipe 8 is connected up to any suitable source of supply.

The valve 5 is provided with the lugs 9` `1923. .serial` Nofeaavso;

which are provided with recesses 10 to receive the tip-turned armsI 11 of the yokes 12. The otherfarms 13 of the yokes carry the rollers 14 which are adapted to travel on the arc-shaped tracks 15.

To provide forthe shifting of the valve from rone fluetoanother, levers 16 are employed, said levers being connected at their inner ends to ythe rock shaft' 17 Amounted in bearingsl. The -levers`16 y'are also connected at 1.9 to the yokes 12; A handle 2O y connected toy one of the 'levers 16, so that bythe movement of said handle the levers and yokes will be operated simultaneously.

I provide a `counter-balance to aid in the ease of the operation of thev movement of the y,

valve, andv accordingly a chain 21 is connected to the valve handle 29,v said chain passingbetween thesheaves 22, thence over the sheaves 23 and`24f, the weight 25 being connected to they outer end of said chain.

' A suitable door 26 is provided for access tothe valve. n l

`In order to keep the parts of the apparatus cool, the water-box 27 is provided,

valve 5 will be raised and the rollers 14 p will move over the arc-shapedy tracks 15, whereupon the valve yis lowered into the waterseal 7 surrounding the stack-Hue 3, as clearly shownin dotted lines, Fig. 1.

Referring to Fig. 1, the connection at 19 between the'` levers 16 and the valve 5` is kand with the water level maintained as at slightly to the right of the center of gravity of the valve, so that the rollers 14: will carry a portion ofthe weight of the valve; By

thisarrangement the levers 16 carry most of the weight ofthe valve when it is being shifted, but suiiicient weight is inposed upon the rollers 14 so that they will serve, together with the track 15, to guide the valve 5 in such manner that it is maintained in al quently is not highly heated, and when movf ed to close the stack-nue it is'low down and .out of the direct path of the hot gases, and

that When one is raised the other is lowered.

As the hood A covers the gas or air flue, one Waste gas flue to the stack, and one flue from the valve to the furnace, known as the furnace flue, the said hood is filled With gas or air at one period, and with .Waste gas at another period, which makes it a three-flue reversing valve.

By the use of a single valve of a 10W `flat type, I greatly prolong the life of the valve,

and at the same time reduce the cost of original constructionV by making one valve take the place of tvvo.

It Will ofcourse be understood by those skilled in the art that what is illustrated in Figs. l and 2 is only one-,half the equipment for each furnace, and that the above described parts Will be duplicated tomake a complete equipment for each furnace.

l. In valve reversing mechanism for furnaces, the combination of a hood covering three distinct llues, a single valve covering a single flue, Vand means for sl'iifting said valvey from the gas or air flue to the stack flue, and vice-versa.

said cover.

'2. In valve reversing mechanism for furnaces, the combination of a hood covering three distinct flues, a single low flat valve coveringa single flue, and means for shifting the said valve from the gas or air Hue to the stack iiue, and vice-versa. n

3. In valve reversing mechanism, the combination with a cover member, of levers connected to opposite sides of said cover member, at points offset with respect to a transverse center line of gravity of said cover member, a roller carried by said cover ineinber,'and an arcuate track With which said roller may co-.operate to support a portion of the nfeight of said cover and guide the same When said levers are being shifted `to move 4i. In valve reversing mechanism for furnace's, the combination with a shiftable valve member, of a lever pivotally supported at one end and connected to said valve member at a pointr offset With respect lto the center of gravity thereof, pair of rollers connected tosaid valve member and adapted to support a ,portion of the Weight thereof, and a track of arcuate form with which said rollers co-operate to partially support and guide said valve member when it is being shifted by movement of said lever.`

In testimony whereof I, the said NICHOLAS F. EGLER, have hereunto set my hand.

NICHOLAS F. EGLER.

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