US811228A

US811228A - Blowing-engine valve.

Info

Publication number: US811228A
Application number: US16239403A
Authority: US
Inventors: Julian Kennedy
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-06-20
Filing date: 1903-06-20
Publication date: 1906-01-30
Anticipated expiration: 1923-01-30

Description

PATENTED JAN. 80, 1906.

J. KENNEDY. BLOWING ENGINE VALVE. APPLICATION. FILED JUNE 20. 1903,

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J. KENNEDY. BLOWING ENGINE VALVE.

APPLICATION FILED JUNE 20. 1903.

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JULIAN KENNEDY, OF PITTSBURG, PENNSYLVA NIA.

BLOW! NGr-ENGl N E VALVE.

Specification of Letters Patent.

Patented Jan. 30, 1906.

Application filed Jane 20,1903. $e1'ial No 162,394.

To (l/ZZ whom it may concern:

Be it known that I, JULIAN KENNEDY, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful Engine-Valve, 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 Figure 1 is a central vertical section of a blowing-engine provided with my improved valve. Fig. 2 is an enlarged transverse section of one of the valves. Fig. 3 is a side elevation of the valve removed. Fig. l is a bottom plan view of the same, and Figs. 5 and 6 are detail views showing the strip and plug packing.

My invention relates to engine-valves of the rocking or Corliss type, and is especially advantageous for blowing-engines, though it may be used for other purposes, and it is designed to reduce the wear on such valves and to provide an efticient and durable packing therefor.

With this object in view my invention consists in the novel construction, arrangement, and combination of parts, all substantially as hereinafter described, and pointed out in the appended claim.

In the drawings, 2 represents a blowingcylinder of the vertical type, having its piston-rod 3 connected to the piston-rod 1 of a steam-engine cylinder in endwise alinement with the blowing-cylinder. The wind-boXes 5 5 at the ends of the blowing-cylinder are preferably formed integrally with its heads, and each is provided with a rocking inletvalve 6 and a rocking outlet-valve 7. These valves are separated by a transverse partition 8, extending through the wind-box, and control ports 9 and 10, leading into the end of the cylinder 2. The ports are provided with arc-shaped seats which are extended within the partition 8, the valve-face 11 being in the form of the segment of a cylinder. 7

The valves are similar to each other in construction, and each consists of a longitudinal central web 12, having upper flanges 1.2 and strengthening-ribs 13 on each side and provided with a series of transverse holes 14 between the ribs. At its lower edge the Web merges into the curved face 11 of the valve, which face is thickened near its outer edges at 15, the thickened portions having longitudinal recesses containing the longitudinal metallic packing-strips 16. The thickened portions at their ends merge into sockets 17 adjacent to the end plates 18 of the valve, and in these sockets are placed cylindrical plugs 19, the lower portions of which are hollow and contain spiral springs 20. The outer portions of the plugs are recessed to receive the ends of the longitudinal strips 16 and also the ends of cross packing-strips 21 at the ends of the valves. These end packing-strips 21 are set at an angle different from a right an gle to the longitudinal strip to prevent wearing a groove in the seat, and their edges are curved to lit the concave face of the seat. Each valve is thus provided with a continuous metallic packing which entirely surrounds the port when the valve is closed and bears upon the seat.

The valve is entirely supported upon

end trunnions

22 and 23. The trunnion 23 is carried within a pocketseat at one side of the wind-box, while the longer trunnion 22 projects through a bearing at the other side of the wind-box and is provided with a crank which is suitably connected with the moving part of the engine, so that the valve is rocked at the proper time in the ordinary manner. The entire valve, with its trunnions, is preferably cast in one piece, the plugs and strips then being inserted. The

strips

16 and 21 are preferably backed up by corrugated stripsprings 24, so that all of the strips are yieldingly pressed against the valve-seat. The valve-body does not rest upon the seat, its weight being supported on the trunnions. The valveis unbalanced, the closed portion being along one side only, so that the weight rests upon the trunnions.

The advantages of my invention result from the peculiar construction of the rocking valve. The weight of this valve is carried on the end trunnions instead of upon the valve-seat, thus greatly reducing the Wear, and the metallic packing effectually seals the Valve When in closed position.

The Valve may be used for steam-engines 5 or other purposes, and many Variations may be made in the form and arrangement of the Valve Without departing from my invention.

I claim A Valve having a longitudinal curved face 10 With spring-pressed packing-strips, the end strips extending at an angle other than'a right angle to the longitudinal strips; substantially as described.

In testimony whereof I have hereunto set my hand.

JULIAN KENNEDY.

Witnesses:

GEO. B. BLEMING, H. M. CORWIN.