US162714A - Improvement in balanced and cut-off valves - Google Patents
Improvement in balanced and cut-off valves Download PDFInfo
- Publication number
- US162714A US162714A US162714DA US162714A US 162714 A US162714 A US 162714A US 162714D A US162714D A US 162714DA US 162714 A US162714 A US 162714A
- Authority
- US
- United States
- Prior art keywords
- valve
- steam
- cut
- balanced
- valves
- 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
- 240000001973 Ficus microcarpa Species 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 239000010730 cutting oil Substances 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/02—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables
- B24B47/06—Drives or gearings; Equipment therefor for performing a reciprocating movement of carriages or work- tables by liquid or gas pressure only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/046—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member
- F15B11/048—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed depending on the position of the working member with deceleration control
Definitions
- the first part of the invention consists of the valve, so contrived that steam is admitted to a chamber in the main valve containing the cut-ott', and it exhausts into the ordinary steamchest at the ends of the valve.
- the top of the chamber or back of the valve works in close proximity to the steamchest cover, and is furnished with one or more openings, to whichrare iitted suitably-constructed packing-rings, which work, steamtight, against the cover, and, by embracing or surrounding the openings which communicate with the steam-pipe, admit steam to the chamber of the valve.
- the area of said opening or openings is made just sufficient to hold the valve to its seat, thus serving to balance it.
- the essential advantage of this arrangement is that the space ordinarily required in the shell of the cylinder, between the bore and the valve-face, for the exhaust-passages is avoided, and the main Valve-face is brought as near to the bore as is consistent with the necessary strength of material in the valve, also, the exhaust having ⁇ a more direct passage to the pipe after leaving the cylinder,
- Fig. 2 is a longitudinal sectional elevation taken on the line cc x of Fig. l.
- Fig. 3 is an inside elevation of the top of the steam-chest.
- A is the main valve, in which is a chamber, B, inclosed by the cover C, which has an opening, D, to admit the steam to the chamber for entering the ports E ot' the engine through the passages F in the valve.
- the opening D is also for balancing the valve by means of a packing-ring or piston, Gr, together with suitable steam-packing arranged in said opening to work against the faceplate H of the cover I of the steam-chest.
- J is a spring, used to keep the piston on the face-plate when the steam is shut oft. There may be two or more of these openings D in the cover of the steam-chamber B, if necessary.
- the steam enters the chamber through the pipe K, and it exhausts at the ends of the valve, through the steam-chest L, into passagesM in the steam-chest cover leading to the exhaust-pipe N.
- O is the cut-o valve, which is arranged in chamber C on the back of valve A.
- the stem P of this valve extends out of the steam-chest through the hollow tube Q, forming part of the main valvestem, and it connects with its rock-arm R in the line of the connection ot' the main valvestem With its rock-arm S, and this rock-arm is pivoted on the rock-arm S at its middle or thereabout.
- the eccentric-rod T of the cut-off valve is connected to the rock-arm R in the line of the pivot of the rock-arm of the main valve, and the eccentric for working it is iitted on the crank-shaft, so that it can be shifted around it for cutting oil sooner or later, according to the speed of the engine.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
.l. W. THOMPSON. l Ba'lancgdnd lCut-off Val-ve. Y
`Na 162,714. i Y PatentedApri|27,'1875.
witnesses: f miraron;
www JLM/f w@ l ivrrnn Srnrns PATE-Nr Enron.
JOSEPH W. THOMPSON, OF SALEM, OHIO, ASSIGNOR YTO HIMSELF AND BUCKEYE ENGINE COMPANY, OF SAME PLACE.
IMPROVEMENT IN BALANCED AND CUT-OFF VLVES.
Specification fcrmingpart of Letters Patent No. 162,714, dated April 27, 1875 application filed October 10, 1874.
To all whom it may concern Be it known that I, JOSEPH W. THOMPSON, of Salem, in the county of Columbiana and State of Ohio, have invented a new and Improved Balanced and Automatic Gut-Off Valve, of which the following is a specification:
The first part of the invention consists of the valve, so contrived that steam is admitted to a chamber in the main valve containing the cut-ott', and it exhausts into the ordinary steamchest at the ends of the valve.
The top of the chamber or back of the valve works in close proximity to the steamchest cover, and is furnished with one or more openings, to whichrare iitted suitably-constructed packing-rings, which work, steamtight, against the cover, and, by embracing or surrounding the openings which communicate with the steam-pipe, admit steam to the chamber of the valve. The area of said opening or openings is made just sufficient to hold the valve to its seat, thus serving to balance it.
The essential advantage of this arrangement is that the space ordinarily required in the shell of the cylinder, between the bore and the valve-face, for the exhaust-passages is avoided, and the main Valve-face is brought as near to the bore as is consistent with the necessary strength of material in the valve, also, the exhaust having` a more direct passage to the pipe after leaving the cylinder,
y there is less back pressure than with the or- Figure l is a horizontal section of the valve and valve-chest arranged upon the side of the engine to work on a vertical valve-face. Fig. 2 is a longitudinal sectional elevation taken on the line cc x of Fig. l. Fig. 3 is an inside elevation of the top of the steam-chest.
Similar letters of reference indicate corresponding parts.
Ais the main valve, in which is a chamber, B, inclosed by the cover C, which has an opening, D, to admit the steam to the chamber for entering the ports E ot' the engine through the passages F in the valve. The opening D is also for balancing the valve by means of a packing-ring or piston, Gr, together with suitable steam-packing arranged in said opening to work against the faceplate H of the cover I of the steam-chest. J is a spring, used to keep the piston on the face-plate when the steam is shut oft. There may be two or more of these openings D in the cover of the steam-chamber B, if necessary. The steam enters the chamber through the pipe K, and it exhausts at the ends of the valve, through the steam-chest L, into passagesM in the steam-chest cover leading to the exhaust-pipe N. O is the cut-o valve, which is arranged in chamber C on the back of valve A. The stem P of this valve extends out of the steam-chest through the hollow tube Q, forming part of the main valvestem, and it connects with its rock-arm R in the line of the connection ot' the main valvestem With its rock-arm S, and this rock-arm is pivoted on the rock-arm S at its middle or thereabout.
The eccentric-rod T of the cut-off valve is connected to the rock-arm R in the line of the pivot of the rock-arm of the main valve, and the eccentric for working it is iitted on the crank-shaft, so that it can be shifted around it for cutting oil sooner or later, according to the speed of the engine.
I reserve the right to make future application for Letters Patent on the rack-arm or valve-gear S.
Having thus described my invention, I 12. The combination of the tubular valveclairn as new and desire to secure by Lett-ers rod Q with the rod.l P, the valves A O, lheir Patent eccentrics, and-connectingrods, as' herein 1. The combination of the sliding hollow. shown and described. Y steam-valve A, and inclosed sliding cut-'off valve with the steam-chest; L, having steam- JOSEPH W' THOMPSON induction pipe K, exhaust-passages M M, and Witnesses :y pipe N, all constructed and relatively arranged p C. VSEDGrWICK, substantially as herein shown and described. T. B. MOSHER.
Publications (1)
Publication Number | Publication Date |
---|---|
US162714A true US162714A (en) | 1875-04-27 |
Family
ID=2232123
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US162714D Expired - Lifetime US162714A (en) | Improvement in balanced and cut-off valves |
Country Status (1)
Country | Link |
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US (1) | US162714A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050106154A1 (en) * | 2002-02-21 | 2005-05-19 | Wyeth | GASP1: a follistatin domain containing protein |
US20060034831A1 (en) * | 2004-08-12 | 2006-02-16 | Wyeth | Combination therapy for diabetes, obesity and cardiovascular diseases using GDF-8 inhibitors |
-
0
- US US162714D patent/US162714A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050106154A1 (en) * | 2002-02-21 | 2005-05-19 | Wyeth | GASP1: a follistatin domain containing protein |
US20060034831A1 (en) * | 2004-08-12 | 2006-02-16 | Wyeth | Combination therapy for diabetes, obesity and cardiovascular diseases using GDF-8 inhibitors |
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