US760580A - Valve. - Google Patents

Description

f'UNIA-TDf STATE-S PATENT l OFFICE. r

OLE 1o. sTORLE; OFI RURLINGTONwIsOONsIN, AssIGNOR To BURLINGTON BRASS. WORKS. WISCONSIN.

e VALVE..

` SPECIFICATION, forming, part of Letters Patent No. 760,580, dated May 24, 1904. .Applicaties nea April 9,1903. serieINe. 151,784. moitier.)

. Ton/ZZ ivwm) i t may concern/: Y. l

Be it known that I, OLE O. STORLE, a citizen of theUnited States,residing at Burlington,in the county of Racine and State. of .Wisconsin,

have invented certain new and useful Improvements in.-Valves, of which the following isa specification, reference being had to the accompanying drawings, forming a part thereof.

, Thisinvention relates more particularly to A leakage around the stem, and to admit ofpack'- ingythe stem when the Valve is open and in operation, and generally to` improve the construction and operation of valves of this class.

The in'ventionconsists vin certain novel fear, tures of construction and in the peculiar ar`- rangement and combinations of parts hereinafterparticularly described, and pointedout v in the claims.

In the accompanying `drawings like letters designate the same parts in the several figures. Figure l isa vertical longitudinal section of a valve embodying Iny improvements. Fig. 2 is a horizontal section ofthe same on the line 2 2, Fig. 1. Fig. 3 is a detached View of thevalve head and stem and of the screw or movable member associated therewith, the valve-head,

screw, anda portion of the stem being shown in section. Fig. et is a horizontal section ofthe valve stemandscrew .on the line 4 4, Fig. B;

and Fig. 5 is a central longitudinal section of' the screw,- takenin a plane at right angles tol that of Fig.

In self-grinding valves of the kind shown in the above-mentioned Letters Patent the screw or movable member by which the valve head or disk is seated and unseated is apt to be turned with said head or disk by reason of the frictional engagement between the lower end of the screw and the upper side of the head or disk, these contacting surfaces being nearly of as great area as those ofthe engaging threads o n the screw and in the case, so that the valve head or disk is immediately moved away from its seat and prevented from grinding thereon when the valvestem-is turned inthe directionvv `to open the valve. --the purpose of `my present construction to oblt is, among other things,

viate this uncertainty in the operationof the valve without the use of a spring, which may be employed to hold the screw stationary dur- 'ing the .initial movement of the valve head or disk inturning the stem. to open-ftheyalve,

. but is not entirely satisfactory.

Patented May '1.904. Y 'l OFQBURLINGTON', WISCONSIN, (A CORPORATION Orl*` The valve-case, which may be, as shown, of,.a l

use, consists of a body a, provided with a valve? c has aneXternally-threaded neck 0l at its upf-,-

form similar to that of other valves in common v Y per or outer end, o`n which a nut or-'glande is litted to form a stuffing-box around the valvestem. A plain bore is made through the neck 1 ai and nut orfgland e coaxial with thel valve- Aseat and cap @for the passage of the valve-stem through the case, said neck forming a bearing y l. i

f is an externally-threaded recessed screwv for said stem., r

ha-ving a circular holethrough its upper end.- It is fitted-'to engage with an internal screw thread inthe cap c and is formed, as shown in Figs. L and', on opposite sides -with open-k ings g, and inwardly-projecting lugs or abutments t. l

e' is a cylindrical valve-stem formed or provided at its lower or Innerv end witha valve" l head or disk j and between its endswith a beveled shoulder. vor valve-face 70. Between the valve-head j and the shoulderor valve-- t face 7c the enlarged portion of said stem -is f fitted to turn in the screw f, `in which it is loosely held by a cross-bar Z, passing through the openings g in said screw and atransverse opening or recess through said stem, as shown in Fig, 3. The valve-stem is beveled or rounded at the 'bottom and preferably,:also, at the top of said transverse opening or recess to present central pivot-bearings to theopposing faces of the bar Z., and thus facilitate the IOO thanthe cross-bar Z, as shown in Fig. 2, to permit aconsiderable range of movement to the valve stem and disk independently of the screw f; but this movement is limited by wings or projections m, formed on opposite sides of the valve-stem and adapted to engage with the lugs or abutments 7L in the screw f.

The upper or outer end of the cap c around the hole or bore through the neck d constitutes a seat for the shoulder or valve-face In, with which it forms a tight closure, preventing leakage around the stem when the valve is opened to the fullest extent.

The operation of my improved valve may be explained as follows: In closing the valve the stem is turned to the right, first taking up the lost motion between the wings m on the valve-stem and the lugs 7L in the screw f, which is then turned with said stem in engagement with the screw-thread in the cap f, thereby moving the valve head or disk j down against its seat. In openingthe valve the initial movement of the stem when turned in the reverse direction does not affect the screw f, the central pivot-bearing in the lower side of the transverse recess in the valve-stem turning freely against the under side of the cross-bar Z until the lost motion or space between the wings m and the lugs /r is taken up. The screw f being then turned, with the valvestem in engagement with the internal screwthread of the cap c, unseats the valve-head j. Thus in the initial movement of the valvestem to open the valve the valve-head is turned upon its seat with whatever pressure or force is exerted to close it, and a true fit between the valve face and seat is produced and maintained. When the valve is opened to the fullest extent, so as to carry the shoulder or valve-face 7c against its seat in the upper end of the cap c, the same action will take place with respect to said valve-face and its seat, when the valve-stem is turned in the reverse direction to close the valve, viz: The screw f will remain stationary until the lost motion or space between the wings m and thelugs 7i is taken up, and the valve-face if, will thus be turned against and ground true to its seat in the cap c.

Both the valve-seats are preferably formed, primarily, by two faces intersecting each other and forming angles more or less acute, which are presented toward the opposing beveled valve-faces and are thus more readily shaped to conform thereto by the grinding movement of said valve-faces thereon.

Suficient play or lost motion between the screw f and the valve-stem is provided for to enable the valve-faces to effectively remove any scale or foreign matter adhering thereto or to the opposing valve-seats by the positive grinding movement of the valve-faces against their seats, as hereinbefore explained.

Various changes in minor details of construction and arrangement of parts may be made without departing from the principle and intended scope of my invention.

I claim- 1. A valve comprising a movable member, a stem fitted to turn within said member, carrying a valve-head and formed with a recess in which is a central bearing, and a support in said recess'for the stem, substantially as described.

2. A valve comprising a movable member, a stem fitted in said member to turn therein and formed with a transverse opening or recess, and a cross-bar lying within said recess and constituting a support for the stem, substantially as described.

3. Avalve comprisinga movable member, a stem fitted in said member to turn therein and formed with a transverse recess and a lateral projection, a cross-bar within said recess and constituting a support for the stem, and an internal abutment within said movable member, and in the path of the projection on the stem, substantially as described.

4. A valve comprising a suitable case provided with valve-seats and a bearing for the valve-stem coaxial with said seats, a stem passing through and adapted to turn in said bearing and provided at one end with a valvehead and between its ends with an oppositelydirected valve-face, a movable member in which said stem is adapted to turn a limited distance, lugs formed inside of the movable member, and projections formed on the valvestem inside of the movable member and adapted to be brought into engagement with the lugs inside of the movable member, substantially as described.

5. A valve comprising a movable member having an internal cross-bar, and a stem carrying a valve-head and fitted in said member and formed with a recess to receive said crossbar, said recess being wider at its ends than the cross-bar to permit a movement of the valve-stem and valve-head independently of the movable member, substantially as described.

6. A valve comprising a suitable case liav ing a valve-seat and an internal screw-thread coaxial with said seat, a recessed screw cngaging said screw-thread and provided with an internal cross-bar, and a valve-head provided with a stem fitted to turn a limited distance in said screw and having a central pivot bearing opposed to said cross-bar, substantially as described.

In witness whereof I hereto aiix my signature in presence of two witnesses.

OLE O. STORLE. Witnesses:

CHAs. L. Goss, ALICE E. Goss.

IOO

IlO

Images