US1172474A - Valve. - Google Patents

Description

VALVE.

APPLICATION FILED JUNE 3, I9I4.

Patented Feb. 22, 1916.

marano saa'ras ra'rnna carica.

THOMAS J. IVIADIGAN, OF NEW YORK, N. Y., ASSIGNOR TO MADIGAN MANUFACTURING COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.`

VALVE.

Specification of Letters Patent.

Application led June 3, 1914. Serial No. 842,572.

To all whom t may concern:

Be it known that I, TnoMAs J. MADiGAN, a citizen of the United States, residing in the citv ot' New York, county and State of New York, have invented certain new and useful Improvements in Valves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention is directed to the provision of an improved Jform of valve adapted for use in various ways and of special utility in connection with household heating systems.

One of the objects of the invention is to provide an improved form of valve having a movable valve-member for closing or opening a passageway through the valve, the construction being such that the casing of the valve may be opened when necessary for the purpose of re-packing around the spindle without disconnecting the valve from the system and without requiring that the operation ot the system be temporarily discontinued. T his object is attained by the provision of an auxiliary seat coacting with one side of the movable valve-member, this auxiliary seat being located on the side of the valve-member opposite that on which the main valve-seat is located. By this construction, the valve-member may be moved away from the main valve-seat the maximum distance and thus be brought to a position in which it coacts with the auxiliary seat to preclude the escape of steam or other fluid passing through the valve around the spindle of the valve. This having been done, the portion of the casing lying above the auxiliary seat may be removed for inspection, repair or re-packing. l

Another feature ot the invention resides in the provision ot improved means for packing the spindle so as to prevent leakage. this involving the use of non-metallic packing material. In accordance with this feature, suitably shaped pieces ofsoft metal are provided adapted to tit into space about the spindle and arranged to be engaged by a member which is threaded upon the valvecasing. The construction is such that this member may be screwed up upon the casing so as to crush the packing pieces and cause them to till into the spaces about the spindle whereby leakage is eiiectively guarded against.

Another feature of the invention resides in the provision of an improved construction for a valve in which the operating device is rotated but not movedaxially while the valve-member moved thereby is rotated and moved axially. This involves the provision of a spline connection between the handle and the valve-member which permits of the relative axial movement of the parts while insuring simultaneous rotational movement.

These and other features of the invention will be better understood by reference to the following description taken in connection with the accompanying drawings in which- Figure 1 is a central section of a valve constructed in accordance with the invention; Fig. 2 is a similar view of a portion of the mechanism showing the valve-member in a diierent position; Fig. 3 is a horizontal section on line 3 3 ot' Fig. 1; Fig. 4 is a horizontal section on line 1 -1 of Fig. 1; Fig. 5 is a detail view showing the packing pieces and Fig. 6 is a vertical section, broken away in part, illustrating a modilication of the construction shown in Fig. 1. f

Referring to these drawings, the valve has a casing 7 on which are twol threaded bosses 8 and 9 with which the pipes of a system are connected. The movable valve-member is adapted to close and open a passageway through the casing 7 between the bosses 8 and 9. This valve-member is'shown at 10. It is of cylindrical form and is threaded upon its exterior to coact with threads on the interior wall of the casing 7. The casing has a seat 11 formed thereon with which the lower end of the valve-member is adapted to coact. In Fig. 1, the valve-member 10 is shown as having a separate closing member 12 mounted upon the lowerlend thereof and rotatable relatively thereto. The member 10 has a cylindrical cavity in its lower end adapted to receive a cylindrical boss upon the upper face of the closing disk 12 and a ring 13 located in a circumferential groove in the boss on the member 12 holds the parts 10 and 12 together while permitting relative rotation thereof. In the lower Jface of the disk 12 is an annular groove having lead or other soft metal therein as shown at 14 adapted to engage the seat 11. By providing a separate closing piece, such.

as the piece 12, rotatable upon the valve member 10, the parts of the valve come together in a new relation each time the valve is closed, since the act of closing and open-` coact with the part 15 which effects the turning of the valve member. This part 15 is a rod of square cross-section formed to coact with a part 16 which constitutes an auxiliary valve-seat. The part 16 is a disk threaded on its exterior and adapted to coact with a thread on the interior wall at the upper open end of the casing 7. This disk 16 has an annular groove therein adapted to receive a wall 17 formed on the rod 15. The wall 17 is circular and wit-hin it is an annular depression in the bottom of which .is a filling of soft metal as shown at `18.

The construction so far described is such that the valve member 10 may be turned by means of the rod 15 so` as to carry it downward into coaction with the seat 11 or to carry it upward into coaction with. the disk 16. When .the valve member is moved upward, the annular depression in the disk 16 receives the wall 17 and the soft metal adjacent to the wall 17 is engaged bythe depending wall around the depression in disk 16. I

The portion of the disk 16 above the threaded portion thereof is flattened on o posite sides to coact with a wrench so that it may be screwed up tightly in the opening in casing 7. The upper surface of the disk 16 is flat except that an annular iiange or ridge is provided thereon. This ridge serves to center a piece` 19 which rests upon the upper face of disk 16 and is provided with a central extension having a square opening therein adapted to receive the upper end of the rod 15. These parts are inclosed within a cap 2() whose lower, larger end has the interior wall thereof threaded to coact with a thread upon the exterior of the upper end ofthe casing 7. This cap 20 is shaped to closely inclose the piece 19 so that the latter is held in position between the cap and disk 16 but may turn readily between. them. The extension integral W-ith the ydisk 19 is circular in cross-section throughout the lower portion thereof as shown at 21 and its upper en'd as shown at 22 is made square so as to be received in. a socket formed on a suitable operating handle. The central opening in the cap'20 ,do'es not closely in close the extension 21 but is of such larger diameter as to provide an annular space be tween these two parts. This space is adapted to receive one or more pieces `of soft metal which may be crushed so as to cause them to completely till the space around the spindle 21 and thus guard against leakage.

In the present instance, two of these soft metal pieces are shown-@M23 and 24, these being of semifcircular cross-section. Preferably, the two pieces are detachably united, as for instance, by providing dovetails on their coacting edges as shown in Fig. 5. To facilitate the crushing of these softmetal -inserts, a sleeve is preferably' `provided about the spindlev 21 having a tapered surfaceat its lower end. Such a sleeve is shown at 25 surrounding the spindle 21. and lying `between the spindle and the cap 20. It willf be noted that the lower end of this sleeve 25 presents a tapered surface, this lower lend being increased in diameter to substantially the same diameter as the interior of the cap 20.

The upper end of thercap 20 is exteriorly threaded to coact with interior threads upon a nut 26 having a central opening through` which the Stem 22 extends. This nut 26 has a thin sleeve 27 securedthereto adapted to;

fit within the upper end of the cap 20 and to coact with the packing pieces 23 and 24.` Vhen the parts have been assembled lnthe relations in which they are shown inF ig. 1, the nut 26 may be tightened up upon the ,cap 2O and the sleeve 27 engaging the packing pieces 23 and 24 will force those pieces down into the tapered cavity between `the sleeve 25 and cap 20, causing them tot fill that space so completely as to effectivelyV prevent leakage about the spindle.

It will be seen that this construction provides a spline connection between the operating handle of the valve and the movable valve-member by reason of the provision of the rod 15 which may slide verticallyrelative to the part 19 and also relativeto the valve-member 10. Therefore, while` the handle effects the rotationalrmovement of the valve-member, it does not partake of the vertical movement of the valve-member. ByV

turning the handle, .the valve-member may be moved into and out of coaction with the seat 11 so as to close and open the valve. If breakage or leakage were to occur requiring opening of the upper portion of the valve casing, the handle may be turned so as to raise the valve-member to its extreme upper position in which position it engages the disk 16 as heretofore explained. and prevents the flow of steam. or other fiuid passing through the valveup through the opening in the disk 16.- This having been done,the cap 20 may be disconnected from the casing 7 together with the parts inclosed within the cap and all of these parts may be taken off for inspection and. repair or substitution of new parts. It will be noted also, that effective packing of the valve is provided` without the use. of non-metallic material which wears rapidly and. is deteriorated by its contact with the steam. or other Huid.

' may be substituted and forced down into the proper packing relation without disconnecting the valve from its position or interrupting the operation of the system. 1t will be noted also, that the construction is such as ,to insure effective closing at the main and auxiliary seats and also to reinforce the various parts to guard against leakage.

The construction shown in Fig. l including the provision of soft metal 14 vfor engagement with the valve seat 11 and the wall about this soft metal adapted to overhang the wall forming the seat 11 serves to insure tight closing of the valve when the valve-member is moved down upon the seat l1. But in some cases, I prefer to so construct the parts as to provide for a threaded engagement lof the valve-member and .its seat. Such a construction is shown in Fig. 6. In the valve shown in this figure, the wall 28 forming the valve seat is threaded upon the exterior thereof and the valvemember is provided with a depending wall Q9 which is threaded-upon its interior surface for coaction with the thread on the wall Q8. These threads and the coacting threads on the casing 7 and valve-member 10 are so positioned relatively that when the valvemember is moved downwardly, the threads on the parts 28 and 29 will come into coaction so as to provide a tighter closing of the valve. The valve member 10 is also provided with a depending wall 30 whose exterior diameter is substantially the same as .the interior of the wall 28 so that the wall 28 is reinforced when the valve-member is moved to the closed position and a tighter fit ofthe parts is provided.

I claim:

l. A valve comprising the combination of a casing having a valve-seat, a movable valve-member, a cap detachably secured to the casing, a disk closing an opening in the casing on the side of the valve-member opposite said seat and having an auxiliary valve-seat formed thereon, said disk being inclosed by the cap and being positioned on the casing independently of the cap, and means extending through said cap for moving the valve-member into and out of engagement with either one of said valve-seats; substantially as described.

2. A valve comprising the combination of a casing having a valve-seat, a movable valve-member, a disk threaded in an opening in the casing on the side of the valvemember opposite said seat and having an auxiliary valve-seat formed thereon, a cap detachably secured to the casing independently of the disk and inclosing the same, and

means extending through the cap for moving the valve-member into and out of engagement with either one of said valve-seats; substantially as described.

3. A valve comprising the combination of a casing having an interior thread and a seat on one side of the thread, a detachable closingmember threaded in an opening in the casing on the other side of the thread, a rotatable member lying adjacent'to the closingy member, a cap engaging the casing and inclosing said closing-member and said rotatable member, said closing-member being held in position independently of said cap, a valve-memberl within the casing engaging said thread, a spline connection between said rotatable member and the valve-member and a handle connected to said rotatable member forjrotatingthe same; substantially as described.; e j

4. A valve'comprising the combination of a casing havinganv interior thread and a seat upon one side of the thread, a detachable closing-member closingan opening in the casing on the other side of the thread, a rotatable-member lying adjacent to the closing-member, a valve-member within the casing coactingwith the thread thereon, a rod passing through an opening in the closing-member and having sliding engagement with said valve-member and said rotatable member, a cap detachably mounted upon the casing and inclosing said closing-member and said rotatable member, said closingmember being held in position independently of said cap, and an operating handle connected to said rotatable member; substantially as described.

5. A valve comprising the combination of a casing having an interior thread and a seatupon one side of the thread, a detachable closing-member closing an openingin the casing on the other side of the thread, a rotatable-member lying adjacent ltothe closing-member, a valve-member within the casing coa'cting with the thread thereon, a rod passing through an opening in the closing-member and having sliding engagement with said valve-member and said rotatable member, a cap detachably mounted uponV the casing and lnclosing saidyclosing-member and said rotatable member, lsaid closingmember being held in position independ-v ently of said cap, packing'= pieces within the cap and around said rotatable member and a nut having threaded engagement with the cap and adapted to engage said packing pieces; substantially as described.

6. A valve comprising the combination of` a casing having a valve-seat, a cap mounted on the casing, an auxiliary valve-seat mounted within the casing and positioned independently of the cap but inclosed thereby, a valve-member movable into engagement with the valve-seat and with the auxiliary mounted upon the casing and having anA auxiliary valve-seat formed thereon, a valvemember movable into engagement with the Valve-seat and the auxiliary valve-seat, a

cap mounted on'the casing over the auxiliary valve-seat, said auxiliary Valve-seat 15 being positioned independently of the cap and operating mechanism. for `the valvemember passing through the cap and looselyv through the central opening of the annulus;l

substantially as described.

In testimony whereof I aiix my signature, in presence of two Witnesses.

.THOMAS J. MADIGAN. Witnesses: t Y

W. S. EDMONDS, VIOLET C. BENNETT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patentsa Washington, D. C.

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