US531775A - Reversing-valve - Google Patents

Description

(H M d 1.

0 e H. H. CAMPBELL.

REVERSING VALVE.

No. 531,775. Patented Jan. 1, 1895.

WW WM UNITED STATES PATENT OFFIQE.

HARRY H. CAMPBELL, OF HARRISBURG, PENNSYLVANIA.

REVERSIN G-VALVE.

To a-ZZ whom it may concern.-

Be it known that I, HARRY H. CAMPBELL, of Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented a new and useful Improvement in Reversing-Valves, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- V Figure 1 is a vertical cross section on the line II of Fig. 2. Fig. 2 is a top plan view of my improved valve; and Fig. 3 is a longitudinal section on the irregular line III-III of Fig. 2.

My invention relates to the construction of the reversing valves employed in regenerative furnaces for opening one due and simultaneously closing another, and it is designed to attain a valve therefor, which will not necessi'tate a special cast-iron casing, or any fixed relation of the parts, thus allowing the valve to be buried beneath the floor level, if desired, and enabling a brick-casing to be employed.

To that end it consists in the combination with two horizontal valve seats, of a single valve which is lifted from one seat and transferred horizontally to and dropped upon the other seat.

It also consists in the construction and arrangement of the parts as hereinafter more fully described and set forth in the claims.

In the drawings, 2 represents a flue leading from one end of a regenerative furnace, and 3 a line leading from the opposite end. These fines terminate in horizontal ports located side by side upon substantially the same level and provided with water-cooled valve seats 4. The ports are located in a common chamber 5 built over the same, the chamber being covered by a plate 6, having a slot 7 extending over both ports. Upon each side of the slot is a rail 8 constituting a track upon which move the wheels of a trolley 9, which carries a tilting lever 10, to the lower end of which the valve 11 is connected by a pivoted link 12. From the chamber 5 leads the stack-flue 13, throu h which the ases nass from either time The action is apparent, the depressing of the lever handle lifting the valve from one seat, when it is easily carried along and seated over the other flue, thus closing either due and opening communication between the other fine and the stack, as in any ordinary reversing valve.

The advantages of the invention will be apparent to those skilled in the art, since no fixed relation of the parts is necessary and the casing may be of brick and below the ground level as shown, thereby greatly reducing the cost and giving the most direct course to the gases. Moreover the valve is never impinged upon by the stream of outgoing gases, and being in contact with a water cooled valve-seat, its life is greatly prolonged.

The casing may be placed above ground, and other materials employed, and many variations made in the form and arrangement of the parts without departure from my vention, since What I claim is 1. In reversing valve apparatus, a V lve chamber, fl ues terminatingin horizontal P S within said chamber, a valve arranged to 01086 75 any of said ports, and means for removing it from one port and seating it upon another;

substantially as described.

2. In reversing valve apparatus, a valvechamber, fines terminating in horizontal ports within said chamber, a valve arranged to close any of said ports, a carriage exterior to the chamber and provided with means for supporting the valve; substantially as described.

3. The combination with fines having horizontal valve-seats in a common chamber, of a valve connected by a link to a lever carried in a trolley movable upon the cover of the chamber; substantially as described.

In testimony whereof I have hereunto set my hand.

HARRY H. CAMPBELL.

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