US847401A - Valve. - Google Patents
Valve. Download PDFInfo
- Publication number
- US847401A US847401A US1906324617A US847401A US 847401 A US847401 A US 847401A US 1906324617 A US1906324617 A US 1906324617A US 847401 A US847401 A US 847401A
- Authority
- US
- United States
- Prior art keywords
- valve
- casing
- disks
- orifices
- disk
- 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
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Classifications
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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
- 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
- F16K1/42—Valve seats
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- 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
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7737—Thermal responsive
-
- 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
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7837—Direct response valves [i.e., check valve type]
- Y10T137/7904—Reciprocating valves
- Y10T137/7908—Weight biased
-
- 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
- Y10T137/86718—Dividing into parallel flow paths with recombining
- Y10T137/86759—Reciprocating
- Y10T137/86767—Spool
- Y10T137/86783—Unequal heads
Definitions
- the valve shown is a back-pressure valve of the double-piston type suitable for use in 4 connection with non-condensing engines or steam-heating systems.
- A represents the outer valve-casing, B the inner casing, which is preferably formed integral therewith.
- This structure is ordinarily made of iron.
- the steam enters the casing at the bottom pipe D leads from the top of the outer casing.
- the casing A is closed at one side by the removable cap E, secured by a screw-bolt E.
- This particular valve is taken simply for purposes of illustration. Obviously the arrangement of parts will be subject to very considerable variation in accordance with the conditions under which the particular valve is designed to be used.
- the inner casing B is provided with two oppositelyplaced ports of unequal area.
- a short shaft K journaled in the cap-piece E, carries the lever L, provided with notches L for the weight M.
- a rockarm N On a squared portion K of the shaft K is a rockarm N, forked at its upper end to receive the pivoted end of a link O, which at the other end is pivoted to the fork I of a screw P, which takes into the disk G.
- the casing is ordinarily made have invented a certain new and useful through the pipe C.
- the present invention has for its object to do away with this difficulty.
- the bushings are preferably screw-threaded, so as to be removable from the casing, and have the flanges Q. Their inner faces are flat, and may of course be ground down, so as to give the proper fit.
- These bushings are relatively thin, so that their change in volume, due to temperature changes, is inconsiderable.
- the coefficients of expansion of the metals of which they are composed being greater than that of iron if they are fitted into the orifices in the casing when the metals are cold, eX- pansion due to rise in temperature, is effectively prevented.
- I also preferably associate with one of the disks a spring R, clamped between the plate R and the disk. This spring is curved at its outre part and put under tension when the valve is closed.
- the soft metal bushings interposed between the casings and the disks insures the proper -fit of the valve in its bearings.
- valve device the combination of a valve-oasing having two orifices in line with each other with two valves arranged on one stem and adapted to simultaneously slide back and forth in and through such orifices, the diameter of the valves being smaller than the diameters of their respective orifices, said valve and casing vom osed of hard metals having the same coe cients of expansion, and soft metal bushings or linings for the orifices of said casing 'of such thickness as to leave the orifices of substantially the same diameters as their respective valves.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Lift Valve (AREA)
Description
PATBNTED MAR. 19., 1907.
No. 847,401. l
G.l o. DAVIS.
VALVE.
APPLIUATION FILED JULm. 190e.
AUNITED STATES PATENT OEEIQE.y
GEORGE COIT DAVIS, OF CHICAGO, ILLINOIS, ASSIGNOR TO G. M. DAVIS REGULATOR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.
VALVE.
Specification of Letters Patent.
Patented March 19, 1907'.
Application filed July 2,1906. Serial No- 324,617.
'vide a construction by which a perfect fit will be maintained between the movable element and the casing throughout changes of temperature.
The invention is illustrated in the accompanying drawing, in which is shown a vertical section through one form of valve constructed according to my invention, certain parts being shown in elevation.
The valve shown is a back-pressure valve of the double-piston type suitable for use in 4 connection with non-condensing engines or steam-heating systems.
A represents the outer valve-casing, B the inner casing, which is preferably formed integral therewith. This structure is ordinarily made of iron. The steam enters the casing at the bottom pipe D leads from the top of the outer casing. The casing A is closed at one side by the removable cap E, secured by a screw-bolt E. This particular valve is taken simply for purposes of illustration. Obviously the arrangement of parts will be subject to very considerable variation in accordance with the conditions under which the particular valve is designed to be used. The inner casing B is provided with two oppositelyplaced ports of unequal area. The larger of these ports is controlled by the disk G, having wings G and the central inward projection G2, into which screws the spindle II, the other end of which is screwed into a similar disk J, controlling the other port. This disk has the wings J. A short shaft K, journaled in the cap-piece E, carries the lever L, provided with notches L for the weight M. On a squared portion K of the shaft K is a rockarm N, forked at its upper end to receive the pivoted end of a link O, which at the other end is pivoted to the fork I of a screw P, which takes into the disk G. In valves of this character the casing is ordinarily made have invented a certain new and useful through the pipe C. A
of iron, and in order that there should be a closev iit between the valveedisks and the casing the former have been made of brass or some like relatively soft metal. The difference in the coefficients of expansion of these different metals has given rise to some trouble in the operation of the valve.
The present invention has for its object to do away with this difficulty. I now make my valve-disks of metal having substantially the same coefficient of expansion as the casing, in practice ordinarily making the casing and the disks of iron, and in order to get the snug fit afforded by the soft metal I insert in the orifices in the iron casing soft metal bushings Q, which are made of brass, bronze, or the like. The bushings are preferably screw-threaded, so as to be removable from the casing, and have the flanges Q. Their inner faces are flat, and may of course be ground down, so as to give the proper fit. These bushings are relatively thin, so that their change in volume, due to temperature changes, is inconsiderable. Moreover, the coefficients of expansion of the metals of which they are composed being greater than that of iron if they are fitted into the orifices in the casing when the metals are cold, eX- pansion due to rise in temperature, is effectively prevented. In order to make the valve very noiseless, I alsopreferably associate with one of the disks a spring R, clamped between the plate R and the disk. This spring is curved at its outre part and put under tension when the valve is closed.
I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to any person skilled in the art.
The use and operation of my invention are as follows: The steam enters the inner casing through the pipe C, exerting a pressure against both disks G and J. This pressure is greatest, of course, against the disk G on account of its greater area. When the pressure on G has become sufiicient to overbalance that on the smaller disk and the pressure exerted by the counterweight M, the
IOO
disks will be moved from their seats to allow the escape of steam into the outer casing and through the exhaust-pipe B. By making the valve-casing and the disks of metals having the same coefficients of expansion,
the sticking or leaking of the valve,l due to changes in temperature, is effectively prevented. The soft metal bushings interposed between the casings and the disks insures the proper -fit of the valve in its bearings.
I claim- In a valve device the combination of a valve-oasing having two orifices in line with each other with two valves arranged on one stem and adapted to simultaneously slide back and forth in and through such orifices, the diameter of the valves being smaller than the diameters of their respective orifices, said valve and casing vom osed of hard metals having the same coe cients of expansion, and soft metal bushings or linings for the orifices of said casing 'of such thickness as to leave the orifices of substantially the same diameters as their respective valves.
p GEORGE OOIT DAVIS. Witnesses:
PERcivAL II. TRUMAN, LUCY A. FALKENBERG'.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1906324617 US847401A (en) | 1906-07-02 | 1906-07-02 | Valve. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1906324617 US847401A (en) | 1906-07-02 | 1906-07-02 | Valve. |
Publications (1)
Publication Number | Publication Date |
---|---|
US847401A true US847401A (en) | 1907-03-19 |
Family
ID=2915864
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US1906324617 Expired - Lifetime US847401A (en) | 1906-07-02 | 1906-07-02 | Valve. |
Country Status (1)
Country | Link |
---|---|
US (1) | US847401A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3747621A (en) * | 1970-10-05 | 1973-07-24 | Watts Regulator Co | Backflow preventer |
-
1906
- 1906-07-02 US US1906324617 patent/US847401A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3747621A (en) * | 1970-10-05 | 1973-07-24 | Watts Regulator Co | Backflow preventer |
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