US1001624A

US1001624A - Valve.

Info

Publication number: US1001624A
Application number: US60922811A
Authority: US
Inventors: William H Curtin
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-02-17
Filing date: 1911-02-17
Publication date: 1911-08-29
Anticipated expiration: 1928-08-29

Description

W. H. GURTIN.

VALVE.

APPLICATION FILED FEB. 17, 1911.

1,001,624, Patented Aug. 29, 1911.

Inventor:

WILLIAM H. CURTIN, OF BROOKLYN, NEW YORK.

FFIC

' VALVE.

To all whom it may concern:

Be it known that I, \VILLIAM H. CURTIN, a citizen of the United States of America, and residing at Brooklyn, in the county of Y Y lungs and btate of l\ew 1 ork, have invented certain new and useful Improvements in Valves, of which the following is a speci fication, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to steam valves, and the object thereof is to provide an improvement in such valves over that shown and described in my Letters Patent of the United States, bearing date of March 14, 1911, and numbered 987,050, and wherein a removable bonnet is shown, the present invention being for the purpose of obviating the necessity for such bonnet thereby greatly reducing the cost of manufacture of the valve.

A further object is to provide the double seat for the valve stem whereby no leakage may occur with the valve in open or closed position if the stutling-box be removed.

A further object is to provide a detaclr able valve disk for the valve stem which antomatically finds its seat and which is of such diameter as to be adapted to be passed into one of the ports of the valve in the assembling thereof.

A further object is to provide such a disk with a recess, preferably withinclined walls,

on the under side thereof to receive material of a relatively soft nature, such as Babbitt metal or the like.

A further object is to provide a central post in the said recess which is of angular formation in order to prevent the rotation of the said filling material in the disk in the operation of seating the same.

A further object is to provide a mush room head upon the said disk adapted to enter a correspondingly enlarged portion of the valve stem, a recess being provided in said stem of a shape and size approximating that of the said head.

. A further object is to provide means for retaining said disk head in position, comprising a pin or the like, and also to provide a block serving as aclosure for the open side of the valve stem recess; and still further objects are to provide such valves which are very simple and of low cost in construction, which are Well adapted to the purpose for which they are designed, which Specification of Letters Patent.

Application filed February '17, 1911.

Patented Aug. 29, 1911. Serial No. 669,228.

are made of few parts and cannot therefore readily get out of order to require repair and, with these and other objects in mind, my invention consists of a valve as hereinafter fully described and claimed.

My, invention is fully described in the following specification, of which the accompanying drawings form a part, in which the separate parts are designated by the same reference characters in each of the views, and in which Figure 1 is a central section taken through a valve constructed according to my present invention; Fig. 2 is a fragmentary section thereof on the line 22 of Fig. 1; and Fig. 3 is a horizontal section taken on the line 3-3 of Fig. 1. y

In the drawings forming a part of this application I have shown a preferred form of embodiment of my invention, comprising a casing a having ports aand a, the latter of which is larger than the former, and the valve casing is provided with a seat a adjacent the port a said port being adapted to be closed by a disk Z) resting on the seat a.

The casin 11 is provided with an internal screw thread w" engaging a similar thread 0 on a valve stem 0 provided with a handle 0 whereby it may be rotated, and said valve stem is also provided with two conical surfaces 0* and 0 which are adapted to be seated in correspondingly formed recesses a and a, thereby preventing the passage of steam through the valve stem passage of the casing a, and said casing is also provided with a stufling-box a of the usual or any desired construction. The conical portion 0'' of the valve stem is continued to form an enlarged head and is provided with a T-shaped recess a open at one side, as shown in Fig. 2, said open side being adapted to be closed by a block (Z of the same external configuration as the head 0 said block being held in position by means of a transversely arranged split pin W, or its equivalent, or the pin may be used alone without the block (I if desired, the result being practically the same as when said block is employed.

The disk I) is provided with a recess therein, on the contacting side thereof, said recess being adapted to be filled with material of a relatively soft nature, such as Babbitt metal or the like, as shown at 6 and centrally of the said recess is an integral post or other element 6, preferably of angular shape, to prevent the rotation of the Babbitt metal within the disk, and said post may also be provided with grooves, or the equivalent, to produce shoulders thereon in order to more surely maintain the'Babbitt metal in position.

The disk 6 carries a post 6 on the upper side thereof and which is surmounted by an enlarged head 6 approximately filling the recess 6 of the valve stem, said post being shown of angular formation, but it will be understood that it may be circular if desired or of any other external configuration, the intent being that it will fit loosely in the head 0 of the stem, whereby a degree of flexibility results, thus insuring a positive contact of the disk 6 wit-l1 the seat a.

The disk 6 is of a slightly less diameter than the diameter of the port a and is adapted to be passed thereinto in the assembling of the valve, the valve stem being passed upwardly through the port (1 until the outer end thereof extends beyond the stufling-box a after which the handle 0 is placed in position and the stem may be manipulated thereby thereafter and, after the mushroom head of the disk has been placed in the recess 0, and the block d placed in position if employed, the valve stem may be rotated through an arc of a circle to permit of the insertion of the split pin (Z and my valve is assembled and ready for use.

It will thus be seen that my valve does not require a detachable bonnet for the assembling of the stem and disk therein, thus greatly reducing the cost of manufacture thereof, the complete valve being just asefiicient, and giving less opportunity for leakage, than if a detachable bonnet were employed, and the cutting of the thread a and valve stem seats a and a as well as other machining in the, valve interior is,

' easily possible through the ports a? and a and, while I have shown a preferred form of embodiment of my invention, it will be obvious that changes thereover may be made, within the scope of the following claims, without departing from the spirit of my invention or sacrificing its advantages.

clined and flared portions of said stem, said outwardly flared flange being provided with a T-shaped recess therein, and a valve disk provided with a mushroom head engaged'in said recess.

2. In a valve, a casing provided with a plurality of ports and having a valve seat formed adjacent one of said ports, a valve stem provided with ascrew thread for a portion of its length and being inwardly inclined at the outer end of said thread and provided witlran outwardly flared flange at the inner end of said thread, said valve casing having cooperating seats for the inclined and flared portions of said stem, said outwardly flared flange being provided with a T-shaped recess therein, a valve disk provided with a mushroom head engaged in said recess, and means for holding said disk detachably in said flange.

3. In a valve, a casing provided with a plurality of ports and having a valve seat formed adjacent one of said ports, a valve stem provided with a screw thread for a portion of its length and being inwardly inclined at the outer end of said thread and provided with an outwardly flared flange at the inner end of said thread, said valve casing having cooperating seats for the inclined and flared portions of said stem, said outwardly flared flange being provided with a T-shaped recess therein, a valve disk provided with a mushroom head engaged in said recess, and means for holding said disk detachably in said flange, said means comprising a pin passed through said flange and beneath said mushroom head.

a. In a valve, a casing provided with a plurality of ports and having a valve seat formed adjacent one of said ports, a valve stem provided with a screw thread for a portion of its-length and being inwardly inclined at the outer-end of said thread and provided with an outwardly flared flange at the inner end. of said thread, said valve casing having cooperating seats for the inclined and flared portions of said stem, said outwardly flared flange being provided with a T-shaped recess therein, a valve disk provided with a- .mushroom head engaged in said recess, and means for holding said disk detachably in said flange, said means comprising a detachableblock closingthe opening in said flange and means for locking said block in position. I In testimony that I claim the foregoing as my invention I have si ed my name in presence of the subscribing witnesses this 8th day of February, 1911.

WILLIAM H. CURTIN. I/Vitnesses GEORGE I BENTLEY, J. C. LARSEN.