US312858A - Alonzo jackson - Google Patents
Alonzo jackson Download PDFInfo
- Publication number
- US312858A US312858A US312858DA US312858A US 312858 A US312858 A US 312858A US 312858D A US312858D A US 312858DA US 312858 A US312858 A US 312858A
- Authority
- US
- United States
- Prior art keywords
- valve
- plate
- slide
- counterbalance
- jackson
- 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
- GLDQOLDJQPPFQL-UHFFFAOYSA-N 2-[bis(2-carbamimidoylsulfanylethyl)amino]ethyl carbamimidothioate;tetrahydrobromide Chemical compound Br.Br.Br.Br.NC(=N)SCCN(CCSC(N)=N)CCSC(N)=N GLDQOLDJQPPFQL-UHFFFAOYSA-N 0.000 description 2
- 240000002027 Ficus elastica Species 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 229920001195 polyisoprene Polymers 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
- F16K3/188—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 hydraulic forces
Definitions
- the letter A designates the cylinder of a steam-engine.
- B is the "alvechest, and O is the slide-valve.
- the slidevalve is seated on the bottom of the valvechest, and steam is admitted to it through a pipe, D, which enters at any suitable point.
- D is the exhaust-port, and F F are the steamports.
- a counterbalance-plate G, which has its seat on the cover H of the valve-chest.
- Said count-erbalance-plate is connected to the slidevalve by one or more columns, a, which are provided with top and bottom flanges, b o, and secured to the slide-valve by screws (1, and to the counterbalanceplate by screws 0.
- Said columns extend through a slot,f, in the cover of the valve-chest, so that they do not interfere with the movement of the slide-valve.
- the inner surface of the coimterbalance-plate is exposed to the action of the live steam,which also acts upon the back of the slide-valve, and if the area of the exposed inner surface of the counterbalance-plate is equal to the area of the back of the slide-valve the latter is balanced against the action of the live steam.
- the outer surface 'of the counterbalance-plate is exposed to the pressure of the atmosphere, and the inner surface of the slide-valve is exposed to the pressure of the exhaust-steam, so that the action of the exhaust-steam on the slide-valve is counterbalanced by the action of the atmosphere 011 the counterbalance-plate, or nearly so.
- the area of the counterbalance-plate must be changed according to the (No model.)
- the area of the exposed inner surface of the counterbalanceplate must be somewhat larger in proport on to the exposed area of the slide-Valve than it is if the slide-valve is used for a high-pressure engine; but it will be readily seen from the foregoing description that by properly gaging the area of the counterbalance-plate G the slidevalve can be balanced in regard to the pressure of the live steam, as well as in regard to the action of the exhaust.
- the counterbalance-plate is made detachable from the slidevalve, so that either the valve or plate can be ground down upon its seat independent of each other.
- I provide the cover H with a recess, into which is placed a sheet, 9, of india-rubber, and also a metallic plate, h, which latter forms the seat for the counterbalance-plate.
- the plate It is secured to the cover H by screws 2', and by means of these screws and the elastic support gthe plate It can be so adjusted that both the slide-valve and the counterbalance-plate are correctly seated.
Description
(No Model.)
A. JACKSON.
BALANCED SLIDE VALVE.
NO. 312,858. 7 Patented Febr24, 1885.
a p v 0 6 'O I) O O u p Q,
'w w. "a a 0 0 Q 0 cm 0 hi r? p l INVENTOR- WITNESSES:
vMevv o wwkacm ATTORNEYS N PETERS. Fhalo-Lilhngmplmr. \Vashinglam u.
lINITED ra rns ATET ALonzoJAoKsoN, or new Yonx, n. Y.
BALANCED SLIDE VALVE.
SPECIFICATION forming part of Letters Patent; No. 312,858, dated February 24, 1885.
Application filed October 2, 1884.
To col-Z whom it may concern:
Be it known that I, ALONZO JACKSON, a citizen of the United States, residing at New York, in the county and State of New York, have invented new and useful Improvements in Balanced Slide-Valves, of which the following is a specification.
This invention relates to improvements in balanced s1ide-valves; and it consists in the novel construction and combination of de vices hereinafter described and claimed, reference being had to the accompanying drawings, illustrating my invention, in wl1ich Figure 1 represents a longitudinal section of a steam-cylinder provided with my balance-valve. Fig. 2 is a face View of the cover of the valvechest detached.
Similar letters indicate corresponding parts.
In the drawings, the letter A designates the cylinder of a steam-engine. B is the "alvechest, and O is the slide-valve. The slidevalve is seated on the bottom of the valvechest, and steam is admitted to it through a pipe, D, which enters at any suitable point. E is the exhaust-port, and F F are the steamports.
With the slidevalve O is combined a counterbalance-plate, G, which has its seat on the cover H of the valve-chest. Said count-erbalance-plate is connected to the slidevalve by one or more columns, a, which are provided with top and bottom flanges, b o, and secured to the slide-valve by screws (1, and to the counterbalanceplate by screws 0. Said columns extend through a slot,f, in the cover of the valve-chest, so that they do not interfere with the movement of the slide-valve. By referring to Fig. 1 it will be seen that the inner surface of the coimterbalance-plate is exposed to the action of the live steam,which also acts upon the back of the slide-valve, and if the area of the exposed inner surface of the counterbalance-plate is equal to the area of the back of the slide-valve the latter is balanced against the action of the live steam. At the same time the outer surface 'of the counterbalance-plate is exposed to the pressure of the atmosphere, and the inner surface of the slide-valve is exposed to the pressure of the exhaust-steam, so that the action of the exhaust-steam on the slide-valve is counterbalanced by the action of the atmosphere 011 the counterbalance-plate, or nearly so. Of course the area of the counterbalance-plate must be changed according to the (No model.)
] nature of the engine. If my slide-valve is used for a low-pressure engine, the area of the exposed inner surface of the counterbalanceplate must be somewhat larger in proport on to the exposed area of the slide-Valve than it is if the slide-valve is used for a high-pressure engine; but it will be readily seen from the foregoing description that by properly gaging the area of the counterbalance-plate G the slidevalve can be balanced in regard to the pressure of the live steam, as well as in regard to the action of the exhaust. The counterbalance-plate is made detachable from the slidevalve, so that either the valve or plate can be ground down upon its seat independent of each other.
. In order to be able to seat Valve and plate correct/1 y, I provide the cover H with a recess, into which is placed a sheet, 9, of india-rubber, and also a metallic plate, h, which latter forms the seat for the counterbalance-plate. The plate It is secured to the cover H by screws 2', and by means of these screws and the elastic support gthe plate It can be so adjusted that both the slide-valve and the counterbalance-plate are correctly seated.
I do not broadly claim a slide-valve connected with a counterbalance-plate seated on a valve-chest and exposed to the pressure of steam or of the atmosphere; but
\Vhat I claim as new, and desire to secure by Letters Patent, is
1. The combination, with the slide-valve O and the exhaust-port E, situated beneath said slidevalve,and with the counterbalance-plate, which is firmly connected to the slide-valve, of a yielding seat for said counterbalanceplate arranged on the outside of the valveohest, substantially as and for the purpose described. 1 V
2. The combination.substantially as hereinbefore described, with the slide-valve, and with the counterbalanceplate firmly connected to the slide-valve, of the metallic plate h, secured to the valve chest and forming the seat for the counterbalance-plate, and of the elastic support placed beneath said metallic plate.
In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.
ALONZO JACKSON. [L. s] Witnesses:
W. HAUFF,
E. F. KASTENHUBER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US312858A true US312858A (en) | 1885-02-24 |
Family
ID=2382012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US312858D Expired - Lifetime US312858A (en) | Alonzo jackson |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US312858A (en) |
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0
- US US312858D patent/US312858A/en not_active Expired - Lifetime
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