US968037A - Blow-off cock. - Google Patents

Blow-off cock. Download PDF

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Publication number
US968037A
US968037A US1910551572A US968037A US 968037 A US968037 A US 968037A US 1910551572 A US1910551572 A US 1910551572A US 968037 A US968037 A US 968037A
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United States
Prior art keywords
valve
stem
blow
seat
cock
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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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Inventor
Ralph W Erskine
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Ralph W Erskine
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Priority to US1910551572 priority Critical patent/US968037A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/10Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
    • F16K11/14Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle
    • F16K11/18Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by one actuating member, e.g. a handle with separate operating movements for separate closure members
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/87056With selective motion for plural valve actuator
    • Y10T137/87088Reciprocation along and rotation about same axis
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/87917Flow path with serial valves and/or closures
    • Y10T137/87981Common actuator

Description

' R. w. ERSKINE.
' BLOW-OPF COOK.
APPLIUATIQK FILED IAB. 25, 1910.
PatenteaAugsJsloq Y 1 nu leali! rrrll'l au.. IAIIMUDI. s c.
` RALH W. ERSKINE, GF PITTSBURG, KANSAS.
To all whom 'it may concern:
Be it known that I, RALPH lV.' Ensluivn,
citizen of the United States, residing at Pittsburg, in the county of Crawford and State of Kansas, have invented certain new and useful Improvements in Blow-(3ftn Cocks, of which the following is a specification.
My invention relates to valves and particularly to blow-oft' cocks such as are used on steam boilers. l
The object ot the invention is to provide a blow-ott' cock, the inlet opening ot' which ymay be closed, Vwhile the main valve is being repaired or replaced.
In blow-olf cocks as ordmardy made, when it is desired to replace or repalr the main valve it is necessary to allow the steam and water to be drawn ott from the boiler, as
i this condition that l havedevised my irlotherwise the steam or water would be blown out of theblow-ol cock, wlnle ythe valve wasout of its place. It 1s to remedy reference is to be had to the following description `and y accompanying Y drawing, in Whichzv f Figure l is a longitudinal section of the valve-casing and valve, the operating shaft and the auxiliary valve being in elevation. Fig. 2 is aperspectivedetail view of the eccentric, and Fig. 3 is a perspective detail view of the auxiliary valve operating rod and ring. f
Corresponding and like parts are referred to in the following description and indicated in all the views of the drawing by the same reference characters. t
Referring tol these .'igures designates the body of the shell or blow-oit cock7 and 3 the tubular extension leading therefrom, and which is screw-threaded at its extremity as at 4 for engagement withthe boiler. The end: of this extremity is formed with a valveseat 5 of any suitable character.
The shell or body 2 at one end is screwthreaded for engagement with a hub 6 through which the main valve stem asses and screw-threadedly engaged with this hub p ras PATE-NT OFFICE.
i i BLOW-OFF COCK.
l 'Specication of Letters Patent; Patented Aug, 23, 1910. Application filed March 25, 191. Serial No. 551,572. v i
is the packing nut 7. The other end of the shell or casing 2 is interiorly screw-threaded t'or engagement with an annular member 8, screw-threaded on its interior as at 9 for engagement with a pipe connection. This annular member is preferably hexagonal upon yits outer face to provide means whereby a wrench may be applied thereto. The inner end of the annular member 8 is formed with a valve-scat 1() against which the valve 15 engages, this seat being preferably beveled.
Passing through the hub G andthe gland is the valve-rod 11 formed at its lower end This rod 11 at its lower end is detachably engaged with a valve-stem 13 having an enlarged lower portion 14 which lfits in. a screw-threaded recess in the upper face of the valve body 15. A nut 16 engages with-the screw-threaded inner face ofthe valve body 15 and acts to hold the valve body in engagement with the stem 1?. The outer face of the valve body 15 is provided with a stud 1,7 whereby the valve body may he rotated to easily diseugage it l lt will be seen that the valve body and the nut 1G are free to rotate from the nut 1G.
upon the stein 1.3, ror in other words are held in swiveled engagement with the stein. The inner end of the stem V13 is screwthreaded for engagement with a screw threaded recess 18 formed in the lower end of the main valve-stem 11. Y
As a means of closing the inlet through the lateral extension 3 l provide the valve body 19 screw threaded upon a spindle 20, or stem, passing through a guide 21 intersecting the extension 3 which rod or spindle 20 at its end is provided with a ring 22 with which the eccentric 12 loosely engages. A lock-nut 23 holds the valve 19 in any adjustable position on the rod 20. y
' The purpose of my invention is as follows z--Under ordinary circumstances the eccentric 12 projects in the direction of the extension 3 and hence the rod 20 is held projected and the valve 19 is held clear ofA the valve-seat 5. The eccentric 12 has a much greater width than the width of the ring 22 and hence the eccentric may be moved through the ring 22.' The eccentric is of course o erated by the valve-stem 11. By raising or owering the valve-stern 11 the f valve is lowered or raised to or from its f seat 10. Any suitable means may be provided for reciprocating the valve-stem 11. I have not illustrated any such means as it necessary to iotate the valve stem 11, thereby drawing inwardly the rod 20 and throwing the va ve 19 into contact with the seat 5. In this position, the valve 19 willbe held to its seat by the pressure behind it. `By now removing the annular member 8 the valve may be easily detached from the stein" 11 and removed for regiinding or repairing, Vor the member 8 may be renie-ved and the seat therein reground. During all this th pressure holds the valve 19 in place against the seat 5. After the valve is replaced in position, and the parts are in their normal condition, the stein 11 is rotated until the valve 19 is forced voutward and" v away from the seat 5.
ya main valve operable in one It will be seen that my invention is very simple, and I have found it iii practice to be entirelyl effective, obviating the Ausual inconveniences incident to the removal of the blow-off cock. valve yand eliminating the necessity of drawing the fires, or blowing off the steam and water prior to removing the valve.' c f f Having thus described the invention what is claimed as newisz- 1. A blow-ott' cock having therein a main valve operatively movable iii one direction to control the passage through the blow-olf cock, and having a portion movablel in a plane at iight angles to the direction first named, an auxiliary valve operable in a. direction at right angles to the first named movement of the main valve, and a connection between said main valve and the auxiliary valve whereby the auxiliary' valve may be moved by the second named movement of the main valve.
2. kIn a blow-oli' cock, a casing having a main valve seat and an auxiliar valve seat, direction, an auxiliary valve operable in a. direction at an angle to the direction of movement of the main valve, and a valve-stem operatively connected to the main and auxiliary valves,
movable in one direction to operate the main 4 valve, and also operable to close or openthe auxiliary valve. f f
3. In a blow-off cock, a casing having an inlet opening and an outlet opening, a valvestein passing through ing a valve at its end engaging with the outthe casing and havv let opening, said valve-stein being rotatable,
yan auxiliary valve adapted to close the inlet opening, and a connection from said auxiliary vaive to the'valve-stem whereby the of the main valve-stem.
'4. In a blow-oli' cock, a casing having an Vinletopening and an outlet opening and havthe spindle, said spindle'and valve being rotatable, an auxiliary valve closing the inlet opening to said casing, a rod connecting said auxiliary valve to the valve-stem, and means on the valve-stem for reciprocating said'rod upon a rotation of the valve-stem.
5. In a blow-oft' cock, a casing having a, lateral extension formed with a valve-seat vauxiliary valve may be' closed by a rotation at its end, said casing being provided with Y a valve-seat at one end, a longitudinally shiftable, rotatable stein passing into the casing, a valve on the end thereof eiigageable with the valve-seat on the casing, an eccentric carried by said stem, an auxiliary valve adapted to close against the seat on the extension, a rod connected to the auxiliary valve, and a ring on the end of said rod surrounding tlie eccentric.
G. In a blow-oli' cock, ay casing having a screw-threaded opening at one end and provided with a lateral tubular extension having a valve seat and adapted to be screwed into a boiler,` an annular member screivthreaded into saidl open end of the casing and forming a valve-seat, a longitudinally shiftable, rotatable main valve-stem passing into thecasing, an eccentric formed on said stem, a main valve, a connecting stem detachably connected to the main valve stem and detachably connected to the main valve, an auxiliary valve adapte-d to fit against the valve-seat on the extension, a rod extending from said auxiliary valve through the ex tension, and a ring on the end of said rod Surrounding the eccentric on the said valve stem, said eccentric being fitted to the said ring so as to permit the eccentric to shift longitudinally therethrough.
'In testimony whereof@ aflix my signature in presence of two witnesses.
RALPH W. ERSKINE. [1.. SJ
Witnesses:
Amnirr J. PORTER, WILLIAM HUDSON.
US1910551572 1910-03-25 1910-03-25 Blow-off cock. Expired - Lifetime US968037A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6845786B1 (en) * 2004-04-07 2005-01-25 Heiner Ophardt Spigot valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6845786B1 (en) * 2004-04-07 2005-01-25 Heiner Ophardt Spigot valve

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