US1363872A - Balanced slide-valve - Google Patents

Balanced slide-valve Download PDF

Info

Publication number
US1363872A
US1363872A US372539A US37253920A US1363872A US 1363872 A US1363872 A US 1363872A US 372539 A US372539 A US 372539A US 37253920 A US37253920 A US 37253920A US 1363872 A US1363872 A US 1363872A
Authority
US
United States
Prior art keywords
valve
seat
slide
balance
plate
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
Application number
US372539A
Inventor
Hiatt Ray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US372539A priority Critical patent/US1363872A/en
Application granted granted Critical
Publication of US1363872A publication Critical patent/US1363872A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L19/00—Slide valve-gear or valve arrangements with reciprocatory and other movement of same valve, other than provided for in F01L17/00, e.g. longitudinally of working cylinder and in cross direction

Definitions

  • valve balance-plate will over-run its seat at short strokes and will substantially balance the valve at all strokes.
  • Figure 1 is a longitudinal section through a balanced slide-valve constructed according to this invention.
  • F ig. 2 is a plan view of the balance-plate.
  • the engine cylinder 2 has steam ports 3, and an exhaust portt.
  • the steam-chest 5 has a valve seat 6, and 7 is the slide-valve. All of these parts are of any approved construction.
  • the slide-valve has a projection or piston 8 on its back which works in a cylinder or cover 9 formed on the balance-plate 10, and these parts are kept steam-tight in any approved way.
  • the balance-plate 10 slides against a seat 12 on the cover 111 of the steam-chest. lVhen the slide-valve is working at short stroke, the main portion of the balance-plate does not over-ride the ends of its seat 12, and in order to prevent the formation of shoulders on the seat 12, the balanceplate is provided with extensions 15 at its ends having cross-grooves 16 formed in them.
  • These grooves are always in free communication with the steam space of the steamchest, and they form relatively narrow contact faces 18 at the ends of the balance-plate which over-run the ends of the seat 12.
  • the seat 12 and the extensions 15 are proportioned so that the extensions 15 over-ride the ends of the seat 12 at all strokes of the valve.
  • This construction permits the slide-valve t0 remain substantially balanced when working at all strokes, as the faces 18 are relatively narrow.
  • the narrow faces 18 and grooves 16 do not materially affect the balance of the valve, and they have no effect on the distribution of the steam. They are provided for the purpose of preventing the plate 10 from wearing shoulders on the seat 12 when the valve is working at short stroke and the main portion of the plate 10 does not pass beyond the ends of the seat 12.
  • a steam-chest provided with seats arranged parallel to each other, a slide-valve working against one seat, and a balance-plate working against the other seat and operatively connected with the slide-valve, said balance-plate having eX- tensions at its ends provided with crossgrooves which constantly communicate with the steam space of the steam-chest and which form relatively narrow contact faces at the ends of the balance-plate, said faces being arranged to over-ride the ends of the seat against which they bear at all strokes of the valve, thereby preventing the formation of shoulders on the'said seat.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Control Of Turbines (AREA)

Description

' R. HIATT.
.BALANCED SLIDE VALVE. APPLICATION FILED APR. 9. 1920.
WM a
UNITED STATES PATENT OFFICE.
RAY HIATT, OF ESBON, KANSAS.
.'BALANCED SLIDE-VALVE.
Specification of Letters Patent.
Patented Dec. 28, 1920.
Application filed April 9, 1920. Serial No. 372,539.
gines; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed whereby the valve balance-plate will over-run its seat at short strokes and will substantially balance the valve at all strokes.
In the drawings, Figure 1 is a longitudinal section through a balanced slide-valve constructed according to this invention. F ig. 2 is a plan view of the balance-plate.
The engine cylinder 2 has steam ports 3, and an exhaust portt. The steam-chest 5 has a valve seat 6, and 7 is the slide-valve. All of these parts are of any approved construction. The slide-valve has a projection or piston 8 on its back which works in a cylinder or cover 9 formed on the balance-plate 10, and these parts are kept steam-tight in any approved way. The balance-plate 10 slides against a seat 12 on the cover 111 of the steam-chest. lVhen the slide-valve is working at short stroke, the main portion of the balance-plate does not over-ride the ends of its seat 12, and in order to prevent the formation of shoulders on the seat 12, the balanceplate is provided with extensions 15 at its ends having cross-grooves 16 formed in them. These grooves are always in free communication with the steam space of the steamchest, and they form relatively narrow contact faces 18 at the ends of the balance-plate which over-run the ends of the seat 12. The seat 12 and the extensions 15 are proportioned so that the extensions 15 over-ride the ends of the seat 12 at all strokes of the valve. This construction permits the slide-valve t0 remain substantially balanced when working at all strokes, as the faces 18 are relatively narrow. The narrow faces 18 and grooves 16 do not materially affect the balance of the valve, and they have no effect on the distribution of the steam. They are provided for the purpose of preventing the plate 10 from wearing shoulders on the seat 12 when the valve is working at short stroke and the main portion of the plate 10 does not pass beyond the ends of the seat 12.
lVhat I claim is:
In a balanced slide valve, a steam-chest provided with seats arranged parallel to each other, a slide-valve working against one seat, and a balance-plate working against the other seat and operatively connected with the slide-valve, said balance-plate having eX- tensions at its ends provided with crossgrooves which constantly communicate with the steam space of the steam-chest and which form relatively narrow contact faces at the ends of the balance-plate, said faces being arranged to over-ride the ends of the seat against which they bear at all strokes of the valve, thereby preventing the formation of shoulders on the'said seat.
In testimony whereof I have aliXed my signature.
RAY I-IIATT.
US372539A 1920-04-09 1920-04-09 Balanced slide-valve Expired - Lifetime US1363872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US372539A US1363872A (en) 1920-04-09 1920-04-09 Balanced slide-valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US372539A US1363872A (en) 1920-04-09 1920-04-09 Balanced slide-valve

Publications (1)

Publication Number Publication Date
US1363872A true US1363872A (en) 1920-12-28

Family

ID=23468568

Family Applications (1)

Application Number Title Priority Date Filing Date
US372539A Expired - Lifetime US1363872A (en) 1920-04-09 1920-04-09 Balanced slide-valve

Country Status (1)

Country Link
US (1) US1363872A (en)

Similar Documents

Publication Publication Date Title
US1363872A (en) Balanced slide-valve
US1495333A (en) Slide-valve gear
US1112233A (en) Puppet-valve.
US1531523A (en) Valve mechanism
US544476A (en) Half to dorr b
US541665A (en) Steam-engine
US140309A (en) Improvement in steam-engine valve-gears
US486148A (en) Steam-engine valve
US1574761A (en) Valve mechanism
US171715A (en) Improvement in reversing-valves for steam-engines
US162714A (en) Improvement in balanced and cut-off valves
US837785A (en) Compound engine.
US149068A (en) Improvement in steam-engine valve-gears
US360594A (en) Steam-engine valve
US132649A (en) Improvement in valves for compound steam-engines
US637243A (en) Fluid-pressure motor.
US278020A (en) Balanced slide-valve
US347012A (en) Chaeles schmid
US105986A (en) Improvement in valves for steam-engines
US127943A (en) Improvement in rotary engines
US118692A (en) Improvement in steam-engines
US479401A (en) Steam-engine valve
US750400A (en) Wilhelm schmidt
US229773A (en) Balanced valve
US259662A (en) Wesley s