US383287A - Valve for steam-engines - Google Patents

Valve for steam-engines Download PDF

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US383287A
US383287A US383287DA US383287A US 383287 A US383287 A US 383287A US 383287D A US383287D A US 383287DA US 383287 A US383287 A US 383287A
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valve
steam
cylinder
engines
port
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    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
    • F16K11/0743—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces with both the supply and the discharge passages being on one side of the closure plates
    • 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
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86574—Supply and exhaust
    • Y10T137/86638—Rotary valve

Definitions

  • FIG. 1 is an elevation of'an engine, parts of which are in section, with the improved valve, which is here shown to oscillate.
  • Fig. 2 is a sectional elevation of the engine and valve on the central vertical line 2 of Fig. 1.
  • Fig. 8 is a side view of the cylinder and steamehest with the cover thereof and valve re moved.
  • Fig. 4 shows the outer side of the valve.
  • Fig. 5 shows the inner or exhaustport face of the valve.
  • the letter A designates the eugi tie-stand; B, the crank-shaft; C, the cylinder mounted on the standA; D, the piston; D, the piston-rod; D the cross head, and E the rod connecting the piston-rod with the crank shaft.
  • the steam-chest F attached to the cylinder has a cover, a, provided with a stuffing-box, a, and a steanrsupply port, I), at one side.
  • the disk-valve G is circular in shape and is centrally mounted on a shaft, (7, which passes through the said stuffing box a on the cover.
  • the outer end of the shaft d has a crank-arm, d, which may have a slot, 70, or a wrist, k
  • Two ports, 6 0, lead from the steam-chest to the interior of the cylinder, one at each end.
  • An exhaust-opening, c is central between the said two ports 0 c, and an exhaust-port, 0, leads therefrom to the side opposite the steamsupply port.
  • the valve G has an inlct-port, f, which opens from the outer side entirely through it.
  • this port is shown as a curved or segment-shaped slot, and is in a position, when the valve is properly turned, to coincide with one or the other of the ports 0, leading to the cylinder.
  • the area of the portf hcingless than the inlet-port of the cylinder, it controls the amount of steam enter lug said cylinder.
  • the cylinder-ports being larger than the steamports permits a free ex haust when the valve is in proper position.
  • the valve On the inner face the valve has an exhaust recess which commences at the center 9 and therefrom extends in a direction away from the inlct-portf and spreads in a flaring or fan shape, 9, as shown.
  • the central part, of the exhaust-recess on the valve is always coincident with the central opening, a, in the cylinder, and the fan'shaped part 9 of the exhaust-recess is in position to coincide with first one and then the other port, 0 c.
  • I provide a lever, H, and attach it to a pivot, i, at a point somewhere near its center.
  • the up per end of said lever has a lateral pin, k, which takes into the slot k in the crank-arm d.
  • the lower end of the said lever has a longitudinal slot, Z, and the conncctingrod E of the engine has a stud, m, the end of which fits loosely in the said slot in the lever.

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

Description

(NoMbdeL) r J. D. FISKE,
VALVE EOE STEAM ENGINES.
No. 383,287. Patented May 22, 1888.
II I g l ill &
E 0 I c a 6 f eI 6 -D/ H A Z 2, \TD 1) iii-i; i
Fi .1. Fay. 2.- WITNESSES:
INVENTOR- BY K-M ATTORNEY.
N PETERS, PhomLxUIngr-plwr, washm xou, D. c.
UNITED STATES PATENT Trice.
JOHN D. FISKE, OF BALTIMORE, MARYLAND.
VALVE FOR STEAM ENGINES.
EPEC'IPI'CATION forming part of Letters Patent 1\To.383,28'7, dated May 22, 1888. Application filed December 19, 1887. Serial No. 258,414. (No model.)
To aZZ whom it may concern:
Be it known that 1, JOHN D. FISKE, a eitizen of the United States, residing at Baltimore, in the State of Maryland, have invented cer tain new and useful Improvements in Valves for Steam-Engines, of which the following is a specification.
My invention relates to a cut-off valve for steam-engines, and is illustrated in the accompanying drawings, in which- Figure 1 is an elevation of'an engine, parts of which are in section, with the improved valve, which is here shown to oscillate. Fig. 2 is a sectional elevation of the engine and valve on the central vertical line 2 of Fig. 1. Fig. 8 is a side view of the cylinder and steamehest with the cover thereof and valve re moved. Fig. 4 shows the outer side of the valve. Fig. 5 shows the inner or exhaustport face of the valve.
The letter A designates the eugi tie-stand; B, the crank-shaft; C, the cylinder mounted on the standA; D, the piston; D, the piston-rod; D the cross head, and E the rod connecting the piston-rod with the crank shaft.
The steam-chest F attached to the cylinder has a cover, a, provided with a stuffing-box, a, and a steanrsupply port, I), at one side. The disk-valve G is circular in shape and is centrally mounted on a shaft, (7, which passes through the said stuffing box a on the cover. The outer end of the shaft d has a crank-arm, d, which may have a slot, 70, or a wrist, k Two ports, 6 0, lead from the steam-chest to the interior of the cylinder, one at each end. An exhaust-opening, c, is central between the said two ports 0 c, and an exhaust-port, 0, leads therefrom to the side opposite the steamsupply port.
The valve G has an inlct-port, f, which opens from the outer side entirely through it. In the present instance this port is shown as a curved or segment-shaped slot, and is in a position, when the valve is properly turned, to coincide with one or the other of the ports 0, leading to the cylinder. The area of the portf hcingless than the inlet-port of the cylinder, it controls the amount of steam enter lug said cylinder. The cylinder-ports being larger than the steamports permits a free ex haust when the valve is in proper position. On the inner face the valve has an exhaust recess which commences at the center 9 and therefrom extends in a direction away from the inlct-portf and spreads in a flaring or fan shape, 9, as shown. The central part, of the exhaust-recess on the valve is always coincident with the central opening, a, in the cylinder, and the fan'shaped part 9 of the exhaust-recess is in position to coincide with first one and then the other port, 0 c. The flat surface. hon the inner face of the valve be tween each end of the Ianshaped part 5/ and the inlet-port f serves as a cutoff. It will be seen that when the inlet-portf of the valve is in coincidence with one port, 6, leading to the cylinder, steam may pass from the chest F into the cylinder at one side of the piston D, while at the same time steam exhausts from the other side through the other port, 0, to the recess g g in the valve, and thence out at the central opening, 0, and exhaust-port c.
From the foregoing description of the valve it will be understood that it may be oscillated or rotated, and plans for both movements are shown in the drawings.
To effect the oscillation of the valve, I provide a lever, H, and attach it to a pivot, i, at a point somewhere near its center. The up per end of said lever has a lateral pin, k, which takes into the slot k in the crank-arm d. The lower end of the said lever has a longitudinal slot, Z, and the conncctingrod E of the engine has a stud, m, the end of which fits loosely in the said slot in the lever. By this construction and combination of parts the motion of the connecting-rod E will impart a vibrating movement to the lever H, which, acting on the crank-arm (1, will cause the valve G to oscillate.
From this description the operation of the invention will be understood.
Having described my invention, I claim and desire to secure by Letters Patent of the United States In an oscillating valve for steam-engines, the cylinder G, provided with ports 0 c, in combination with the recess 9' and the portf, the area of said portf being less than the inletport of the cylinder, substantially as and for the purpose set forth.
In testimony whereof I affix my signature in the presence of two witnesses.
JOHN D.- FISKE.
Witnesses:
JNo. T. M ADDOX, JOHN E. Moanrs.
ICO
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965801A (en) * 1974-08-19 1976-06-29 Hutchins Alma A Straight line abrading tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965801A (en) * 1974-08-19 1976-06-29 Hutchins Alma A Straight line abrading tool

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