US50746A - Improvement in slide-valves - Google Patents
Improvement in slide-valves Download PDFInfo
- Publication number
- US50746A US50746A US50746DA US50746A US 50746 A US50746 A US 50746A US 50746D A US50746D A US 50746DA US 50746 A US50746 A US 50746A
- Authority
- US
- United States
- Prior art keywords
- valve
- steam
- valves
- slide
- improvement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000003660 Reticulum Anatomy 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000000576 supplementary Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
- F16K3/184—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of cams
- F16K3/186—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of cams by means of cams of wedge from
Definitions
- Figure l is a transverse section made near the valve-stem.
- Fig. 2 is a longitudinal section made through the center.
- Fig. 3 is a plan view with part ot' the cover of the steam-chest.
- Fig. et is an enlarged section, vshowing the packing or joint in the valve.
- the nature of my improvement consists in constructing the valves of steam-engines .of four sides open through the middle, affording a free passage for the steam through the valve, the perpendicular sides of the valve being Iltted accurately upon their edges above and below to the top and bottom of the steam-chest, and made steam-tight and kept, under all circumstances, in perfect adjustment by the eX- pansion and contraction of au elastic metallic spring, inserted in and composing a part ot' the body of the valve, and having opposite to the .port a shallow supplementary port in the steam-chest bonnet, which, in connection with the cored portion ot the valve, permits the free passage of the steam equally above and below the valve when open, by means of which arrangement the pressure of the steam against the valve is made.
- valve being perfectly balanced, and by the introduction of the steam through an opening below and another above ot' the same area, in consequence ot' the cored opening through the valve, it is only necessary to move the valve one-half otl the width ot' the port to secure a full opening.
- This steam-chest is covered with a bonnet, C.
- the supplementary ports K which are charnbered recesses opposite to and ot' the same shape and size ot' area as the main ports, and of a depth not less than halt' the width ofthe port.
- a A is the valve. This is cast in two similar parts, cored so as to lea-ve such partitions as may be necessary to give lateral support to the sides.
- the valve is made with four quadrilateral sides, and open above and below through the center, and is finished upon its upper and lower surfaces to worl;r on corresponding surfaces on the steam-chest.
- These two parts are united by the metallic spring j, composed cfa sheet of any elastic metal formed to the shape shown in the drawings, and attached to the two parts of the valve above and below by any ot' thc lapproved methods ot making a steam-joint.
- valves are attached and operated as other slide-valves.
- the elastic jointj In the construction ot the elastic jointj it is necessary to provide for sufficient torce to al ways maintain hisni-tightjoint between the bearing-surfaces of the valve and the valveseats upon the steam-chest. This may be done either by the elasticity of' the metal composing the joint or by so altering its shape as to add to the elasticity of the metal the foreeof the pressure of the steam upon the joint.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Description
UNITED STATES PATENT FFICE.
HENRY SPENGLER, OF PHILADELPHIA, PENNSYLVANIA.
IMPROVEMENT IN SLIDE-VALVES.
Specification forming part of Letters Patent No. 50,7116, dated October 31, 1865.
To all whom fit may concern-C Be it known that I, HENRY SPENGLER, ot the city ofPhiladelphia, in the county of Philadelphia and State ot' Pennsylvania, have invented certain new and useful Improvements in Balanced Slide-Valves for Steam-Engines; and I do now declare that the followingis an exact description thereof, reference being had to the annexed drawings, making a part of this specification.
In the drawings, the same letters refer to identical parts.
Figure l is a transverse section made near the valve-stem. Fig. 2 is a longitudinal section made through the center. Fig. 3 is a plan view with part ot' the cover of the steam-chest. Fig. et is an enlarged section, vshowing the packing or joint in the valve.
The nature of my improvement consists in constructing the valves of steam-engines .of four sides open through the middle, affording a free passage for the steam through the valve, the perpendicular sides of the valve being Iltted accurately upon their edges above and below to the top and bottom of the steam-chest, and made steam-tight and kept, under all circumstances, in perfect adjustment by the eX- pansion and contraction of au elastic metallic spring, inserted in and composing a part ot' the body of the valve, and having opposite to the .port a shallow supplementary port in the steam-chest bonnet, which, in connection with the cored portion ot the valve, permits the free passage of the steam equally above and below the valve when open, by means of which arrangement the pressure of the steam against the valve is made. equal from all directions, and creates no friction in its movements, the valve being perfectly balanced, and by the introduction of the steam through an opening below and another above ot' the same area, in consequence ot' the cored opening through the valve, it is only necessary to move the valve one-half otl the width ot' the port to secure a full opening.
To enable others skilled in the art to make and use my invention, I will proceed to eX- plain its construction and operation.
I construct the steam-chest in the ordinary manner. In large engines I recommend the location of the cylinder-ports at the extremil ties of the cylinder. This steam-chest is covered with a bonnet, C. In this bonnet are cast the supplementary ports K, which are charnbered recesses opposite to and ot' the same shape and size ot' area as the main ports, and of a depth not less than halt' the width ofthe port.
A A is the valve. This is cast in two similar parts, cored so as to lea-ve such partitions as may be necessary to give lateral support to the sides. The valve is made with four quadrilateral sides, and open above and below through the center, and is finished upon its upper and lower surfaces to worl;r on corresponding surfaces on the steam-chest. These two parts are united by the metallic spring j, composed cfa sheet of any elastic metal formed to the shape shown in the drawings, and attached to the two parts of the valve above and below by any ot' thc lapproved methods ot making a steam-joint.
The valves are attached and operated as other slide-valves.
In the construction ot the elastic jointj it is necessary to provide for sufficient torce to al ways maintain asteani-tightjoint between the bearing-surfaces of the valve and the valveseats upon the steam-chest. This may be done either by the elasticity of' the metal composing the joint or by so altering its shape as to add to the elasticity of the metal the foreeof the pressure of the steam upon the joint.
The action and direction ot' the steam passin Fig. 1.
Having fully explained the nature and operation of my invention, I do not claim my invention the mere interposition ot' a yielding substance or .packing between two similar valve-faces working between parallel surfaces; nor do I claim simply ports through a valve, for such are much used where cut-offs are employed nor do I claim a mere duplicate valveseat in connection with a slide-valve having ports and faces on both sides; but
What I claim as my invention, and seek to secure by Letters Patent, is-
1. The within-described valve, when so arranged as to permit the steam to pass to the cylinder around its upper and lower edges, by which arrangement a full area of opening ing from the port F is indicated by the arrows` is made by slightly-more than one-half the m0- tiou usually given to such valves, substantially as described.
2. The combination of the ports iu the valve A with the port F and supplementary port K, substantially as and for the purpose set forth.
3. Arranging the Withiudescribed valves between two parallel seats when such seats are duplicates the one of the other, substantielly as shown and described.
HENRY SPENGLER.
Witnesses:
JOHN S. HOLLINGSHEAD, CHAs. SIKKEN. A:
Publications (1)
Publication Number | Publication Date |
---|---|
US50746A true US50746A (en) | 1865-10-31 |
Family
ID=2120297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US50746D Expired - Lifetime US50746A (en) | Improvement in slide-valves |
Country Status (1)
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US (1) | US50746A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11067177B2 (en) * | 2013-05-31 | 2021-07-20 | Dayco Ip Holdings, Llc | Sprung gate valves movable by an actuator |
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0
- US US50746D patent/US50746A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11067177B2 (en) * | 2013-05-31 | 2021-07-20 | Dayco Ip Holdings, Llc | Sprung gate valves movable by an actuator |
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