US493836A - Throttle-valve - Google Patents
Throttle-valve Download PDFInfo
- Publication number
- US493836A US493836A US493836DA US493836A US 493836 A US493836 A US 493836A US 493836D A US493836D A US 493836DA US 493836 A US493836 A US 493836A
- Authority
- US
- United States
- Prior art keywords
- valve
- steam
- valves
- throttle
- cross head
- 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
- 238000010276 construction Methods 0.000 description 4
- 230000003137 locomotive Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 210000000614 Ribs Anatomy 0.000 description 2
- 230000001808 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/12—Final actuators arranged in stator parts
- F01D17/18—Final actuators arranged in stator parts varying effective number of nozzles or guide conduits, e.g. sequentially operable valves for steam turbines
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86928—Sequentially progressive opening or closing of plural valves
- Y10T137/87016—Lost motion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/8741—With common operator
Definitions
- I employ two valves instead of one to control the passage of steam from the dome to both cylinders of the engine, and I operate these valves successively or dissimultaneously by a single set of operating rods and levers, in order that sufficient steam may be first ad mitted to start the engine, and then a larger amount of steam admitted to continue the operation of the engine at high speed.
- each of them may be smaller than the single large valve usually employed, but their total area is greater, so that steam is supplied to the connecting pipe to its full capacity, and the reduced size of each valve insures less tendency to leakage, or expansion of metals.
- Figure 1 is a side elevation of a locomotive engine embodying my improvements.
- Fig. 2 is a section of the throttle valve on the line 2-2 of Fig. 3.
- Fig. 3 is a section on the line 3-3 of Fig. 2.
- Fig. 4 is a view, partly in plan and partly in section on the line 4et of Fig. 2; and
- Fig. 5 is a detail view of the valve-operating cross head.
- Throttle valve A is located within the dome B, of the engine, as usual, and pipes 0 lead from the valve to the cylinders D.
- a rod E connects the bell crank lever K, of the valveoperating mechanism with the hand lever E, within the cab.
- the pipe 0, is connected by a coupling 0, with an upright pipe or chamber F, Whichhas an enlarged top portion f, extending backwardly and containing valve chambers, and seats for the valves G, G.
- These may be of usual well known construction, having upper and lower heads g, and guide ribs or webs 9. Both valve chambers communicate with. the pipe or chamber F, and the valves are adapted to admit steam from the dome into the valve chambers at both top and bottom.
- Each valve is pivotally connected with a cross head H, which is, in turn, connected by a link I, to the inner, shorter arm of a bell crank lever K.
- the upper, longer arm of the lever K is connected to the rod E, at or, as indicated in Fig. 1.
- the pin 6, which connects the cross head H, to the link I, is located closer to the pivotal connection of the cross head with one valve than to the pivotal connection of the cross head with the other valve.
- the pin 1' is closer to the valve G, than to the valve G, so that when the bell-crank lever is first operated, the valve G, will be first opened without opening the valve G. A sufficient amount of steam is thereby admitted to start the engine, and steam is admitted to the inside of the valve G, and balances it.
- asteam dome throttle-valve comprising two valve-chambers, arranged side by side, and provided with four valve-seats, a single pipe or passage 0, leading to the engine-cylinders, to which both valve-chambers are connected, a pair of independently moving valves, each having two heads and means, substantially as described, for operating the valves, successively or dissimultaneously, the organization being such that a sufficient amount of steam is first admitted to start the engine and then a larger amount of steam is admitted to continue the operation of the engine at high speed.
- a throttle valve comprising two valve chambers and seats of substantially the same area, a pair of balanced valves of substantially the same area each having two heads, and ar ranged side by side and fitting said seats, and means, substantially as described, for operatinlg the valves successively or dis-simultaneous y.
- a throttle valve comprising a pipe or chamber F, having an enlarged top portion f, provided with four separate valve seats each of comparatively small area, two valves each having two heads for said seats, means for operating the valve successively or dis-simultaneously, and a single pipe to which the steam admitted by both valves passes.
- valve chambers and seats two valves, a cross head to which they are connected, a link connected to the cross head between the valve stems and closer to one valve than to the other, a stop or fulcrum against which the shorter end of the cross head strikes, and connections between the link and an operating lever.
- valve chambers and seats two valves, a cross head pivot-ally connected with the valves, the link pivotally connected with the cross head between its connection with the valves, and means for moving the link toward and from the valve chambers.
Description
(No Model.) 2 Sheets-Sheet 1.
A. J. PITKIN. THROTTLE VALVE.
'No. 493,886. Patented Mar. 21, 1893,
N0 Model.) 2 SheetsSheet 2.
A. J. PITKIN.- THROTTLE VALVE.
No. 498,886. I Patented Mar. 21,1893.
amvamlioz UNITED STATES PATENT OFFICE.
ALBERT J. PITKIN, OF SOHFNECIADY, NEW YORK.
TH ROTTLE-VALVE.
SPECIFICATION forming part of Letters Patent No. 493,336, dated March 21,1893.
I Application filed July 13, 1892. Serial No. 4.39.882- (No model.)
To all whom it may concern.-
Be it known that I, ALBERT J. PITKIN, a citizen of the United States, residing at Schenectady, in the countyof Schenectady and State of New York, have invented certain new and useful Improvements in Throttle-Valves for Locomotive-Engines, of which the following is a specification.
In locomotives usually a single valve is employed in the steam dome to control the passage of steam from the dome through connecting pipes to the cylinders. On large engines in order to supply sufficient'steam to the cylinders, a very large valve has been employed, and much difficulty has been encountered in opening the valve, on account of the outside steam pressure, and it is difficult to keep the valve tight, owing to the expansion of metal in the pipe, valve seat and valve, and by reason of the high pressure on the large surface of the valve.
According to my invention, I employ two valves instead of one to control the passage of steam from the dome to both cylinders of the engine, and I operate these valves successively or dissimultaneously by a single set of operating rods and levers, in order that sufficient steam may be first ad mitted to start the engine, and then a larger amount of steam admitted to continue the operation of the engine at high speed. By thus employing two valves, each of them may be smaller than the single large valve usually employed, but their total area is greater, so that steam is supplied to the connecting pipe to its full capacity, and the reduced size of each valve insures less tendency to leakage, or expansion of metals.
In the accompanying drawings-Figure 1 is a side elevation of a locomotive engine embodying my improvements. Fig. 2 is a section of the throttle valve on the line 2-2 of Fig. 3. Fig. 3 is a section on the line 3-3 of Fig. 2. Fig. 4 is a view, partly in plan and partly in section on the line 4et of Fig. 2; and Fig. 5 is a detail view of the valve-operating cross head.
Throttle valve A, is located within the dome B, of the engine, as usual, and pipes 0 lead from the valve to the cylinders D. A rod E connects the bell crank lever K, of the valveoperating mechanism with the hand lever E, within the cab. The pipe 0, is connected by a coupling 0, with an upright pipe or chamber F, Whichhas an enlarged top portion f, extending backwardly and containing valve chambers, and seats for the valves G, G. These may be of usual well known construction, having upper and lower heads g, and guide ribs or webs 9. Both valve chambers communicate with. the pipe or chamber F, and the valves are adapted to admit steam from the dome into the valve chambers at both top and bottom. Each valve is pivotally connected with a cross head H, which is, in turn, connected by a link I, to the inner, shorter arm of a bell crank lever K. The upper, longer arm of the lever K, is connected to the rod E, at or, as indicated in Fig. 1.
It will be observed that the pin 6, which connects the cross head H, to the link I, is located closer to the pivotal connection of the cross head with one valve than to the pivotal connection of the cross head with the other valve. As shown in Fig. 3, the pin 1', is closer to the valve G, than to the valve G, so that when the bell-crank lever is first operated, the valve G, will be first opened without opening the valve G. A sufficient amount of steam is thereby admitted to start the engine, and steam is admitted to the inside of the valve G, and balances it. As the bell-crank lever continues to turn, the end 71., of the cross head H, abuts against the lug h, which acts as a fulcrum on which the cross head turns, and the valve G, is thereby also opened, admitting the full amount of steam through both valve chambers to the chamber F, and thence through the connecting pipe 0, to the cylinders.
Other parts of the apparatus shown need not be described, as many of them are of usual well known construction, and may be variedwithout departing from the novel features of my invention, which have been fully described.
I claim as my invention- 1. In combination with asteam dome throttle-valve comprising two valve-chambers, arranged side by side, and provided with four valve-seats, a single pipe or passage 0, leading to the engine-cylinders, to which both valve-chambers are connected, a pair of independently moving valves, each having two heads and means, substantially as described, for operating the valves, successively or dissimultaneously, the organization being such that a sufficient amount of steam is first admitted to start the engine and then a larger amount of steam is admitted to continue the operation of the engine at high speed.
2. In combination with a steam dome, a throttle valve comprising two valve chambers and seats of substantially the same area, a pair of balanced valves of substantially the same area each having two heads, and ar ranged side by side and fitting said seats, and means, substantially as described, for operatinlg the valves successively or dis-simultaneous y.
3. The combination of a steam dome, the engine cylinders, a throttle valve in the steam dome and connected with the cylinders, said throttle valve comprising two valve seats and chambers of substantially the same area and arranged side by side, and means, substantially as described, for operating the valves successively or dis-simultaneously.
4. In combination with a steam dome, a throttle valve comprising a pipe or chamber F, having an enlarged top portion f, provided with four separate valve seats each of comparatively small area, two valves each having two heads for said seats, means for operating the valve successively or dis-simultaneously, and a single pipe to which the steam admitted by both valves passes.
5. The combination of the valve chambers and seats, two valves, a cross head to which they are connected, a link connected to the cross head between the valve stems and closer to one valve than to the other, a stop or fulcrum against which the shorter end of the cross head strikes, and connections between the link and an operating lever.
6. The combination of the valve chambers and seats, two valves, a cross head pivot-ally connected with the valves, the link pivotally connected with the cross head between its connection with the valves, and means for moving the link toward and from the valve chambers.
In testimony whereof I have hereunto subscribed my name.
ALBERT J. PITKIN. Witnesses:
ARTHUR M. LANE, THOMAS N. PITKIN.
Publications (1)
Publication Number | Publication Date |
---|---|
US493836A true US493836A (en) | 1893-03-21 |
Family
ID=2562676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US493836D Expired - Lifetime US493836A (en) | Throttle-valve |
Country Status (1)
Country | Link |
---|---|
US (1) | US493836A (en) |
-
0
- US US493836D patent/US493836A/en not_active Expired - Lifetime
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US493836A (en) | Throttle-valve | |
US978579A (en) | Air-valve. | |
US498507A (en) | Apparatus for operating furnace-doors | |
US171086A (en) | Improvement in throttle-valves | |
US642007A (en) | Throttle-valve. | |
US139694A (en) | Improvement in throttle-valves for locomotive and other engines | |
US1165579A (en) | Steam-engine. | |
US564050A (en) | Mond locomotive and machine works | |
US723734A (en) | Throttle-valve. | |
US413500A (en) | Brake for locomotives | |
US1082928A (en) | Locomotive-exhaust tip. | |
US1000489A (en) | Locomotive. | |
US632223A (en) | Valve. | |
US1738824A (en) | Exhaust-steam injector | |
USRE8734E (en) | Improvement in inspirators | |
US471836A (en) | Combined starting and blow-off valve | |
US456240A (en) | Blower-valve for locomotives | |
US1089904A (en) | Drifting-valve for locomotives. | |
US459851A (en) | Island | |
US5051A (en) | Valve of steam-engines | |
US549828A (en) | Valve mechanism for com pound engines | |
US319759A (en) | Exhaust attachment for steam-engines | |
US246640A (en) | Joseph eyan | |
US753021A (en) | A corpoea | |
US536796A (en) | Compound engine |