US1539305A - Valve - Google Patents

Description

May ze, 1925. 1,539,305

J. J. DUNNE VALVE Filed July 13. 1925 INVENTOR. ff/Uzne Patented May 26, 1925,-

PATENT vO Fluor..

JOSEPH J'. DUNNE, 0F SEATTLE, WASHINGTON.

VALVE.

Application led July 13, 1923. Serial No. 651,390.

To all whom 'it may concern Be it known that I, JosErH kJ. DUNNE, a citizen of the United States, and a resident of Seattle, county of King, State of 5 Washington, have invented a new and use- CFI ful Valve, of which the following is a specification.

The present invention relates to improvements in valves and has particular reference to a valve adapted t'o be closed by screw action. It is proposed to provide an improvement on a valve .of this character which will allow the valve to be closed instantly without executing a number ot turns which would otherwise be necessary for the closing of the valve. It is further proposed to provide means allowing this feature of quick action to be eliminated at the desire of the (operator, in which case the valve operates like any common valve now on the market. Further objects and advantagesof my device will appear as the specification proceeds.

The preferred form of my invention is illustrated in the accompanying drawing in which Figure 1 shows a vertical section through my valve, Figure 2 a detail view in side elevation of a valve head arrangement, Figure 3 a longitudinal section through the said arrangement. Figures 4 and 5i transverse sections taken along` line 4 5 of Figure 1 with the valve stem shown in different positions relative to the valve head, Figure 6 a perspective detail view illustrating the engagement between the valve stem and theV valve head, Figure 7 a side view of the valve head showing. the same in its relation tothe valve stem when my quick closing feature has been used, Figure 8 a perspective` detail view of a device for allowing the quick action feature to be eliminated and Figure 9 a transverse section takenalong line `9 9 of Figure 1. While I have shown only the preferred form of the invention, it should be understood that various changes or modifications may be made within the scope of the claims hereto attached without departing from the spirit ofthe invention. t

111 .its preierred form, my device com prises a valve housing (1) adapted to threadedly engage adjoining pipes by means of its internal threads (2) and (3) so as to allow a liquid to lpass therethrough. An internal wall (4) is bent to provide an axial seat (6) for the valve (7). The latter comprises a valve stem (8), having a suitable handle (9) thereon by means of which it may be turned and the valve head (11). The valve stem has an enlarged threaded portion (12) adapted to engage the memloer (13) extending radially from the valve housing and secured thereto by means of the threaded engagement shown at (14). A recess (16) in said member allows a packing (17) to be introduced which is forced upon the stem and the` walls of the recess by means of a gland (18) and the cap (19).

It will be seen that if the handle (9) is turned, the valve stem moves upwardly or downwardly respectively and imparts its motion to the valve head (11) previously referred to. This valve head consists of three principal parts, that is, the sleeve 75 (21), the gland (22) and the seat engaging member (23). The sleeve (21) is adapted to slidably engage the lower reduced end (24) of the stem. It has an enlarged base (26) fitting' into an annular flange (27) 80 extending upwardly from the valve seat engaging member and held in position by the gland (22) which is threaded into the flange (27). Thebase of thesleeve (21) is stepped as shown at V(28) to provide a 85 seat for the spring (29) which bears with its upper end against the enlarged threaded portion (22) of the stem. A small-stud (31 extending from the base of the sleeve y(21 in the seat engagingmember (23) prevents rotary motion of the sleeve relative to the latter member. The reduced end (24) of the stem is provided with a transverse pin (32) extending in the peripheral groove (33) in the sleeve (21) and adapted 95 to register with longitudinal grooves (34) in the sleeve when the latter occupies a predetermined position relative to the stem. When the` pin registers with the lQIlgitudi- Cil nal grooves, ,the spring (29) forces the lo" cui sleeve downwardly. Normally, however, the pin rests in the peripheral grooves and forces the sleeve (2l) and with it the whole valve head to follow the motions of the valve stem.

As will be seen particularly well from Figures' 2 and 7, the gland (22) has er;- tending from its upper face two lugs (36), each lug being formed to provide a gradual.

ascent (37) on one sideand a steep face- (38) 0n the other side. These lugs are adapted to engage with a pin (39) supporti ed in the member (13) with freedom of longitudinal motion and normally depressed by a spring (4l) but adapted to yield to upward. pressure. The pin (39). extends in the pathof the two lugs' (36) and is Ilifted out of the way when the valve ystem and the valve head-rotate counter-clockwise by ascendingthe gradual ascent (37), passing over thev crest and dropping down the vertical side of the lug, while it stops rotary motion of the valvehead in a clockwise di rectionY by directly vengaging with thev vertical side of the lug. The pin (39) may be lifted so as to clear the lugs all together andto thereby becomef inoperative by means of'the-crankpin (42)v adapted to be' actuated by rotating the handle The operation of my valve head may be decribedY as follows: To open the valve, the handle (9) is turned to the left,`as.viewed from above. This'V causes the pin which in the beginning occupies the position shown in Figure 5, to enter the peripheral grooves (33) as shown in Figure 4, and after it has reached the end of the grooves it causes the sleeve (21)` and thereby the valve head as a whole to follow the rotary and ascending motion of the stem (8); After several turns have been made, the lugs (36') extending upwardly fromthe; gland (22) engage with the'pin (39). But since the engagement takes place atthe slowly ascending side of the lugs, the pin (39) merely rides over the lugsand does not per-` form any function. `When the valve is fully openedV and it isfd'esiredy to close the same quickly, the handle is turned to the right.` The clockwise motion ofthe stem (8) would normally cause the'valve head to turn'cloclwise too, but as soon as the first one of thelugs comes in contact with the pin" (39) it is prevented from rotating any further.

Since the rotary motion of the' stemis ynot 'affected by the ystoppitr continuesuntil the pin 32Y registers with the longitudinal slots in the sleeve (2l), whenthe spring (29) becomes active and forces thesleeve'(2l) andthe whole valve head upon its seat with a quiclrstraight lon gitudinal motion. Although Athe valve islnow sea-ted and stops thef'tiow ofliquid,y theoperator.' may4V continue his turning motion whichwill cause the-*pin ('32) to slowly descend in the longitudinal slot (34) and to' return to its original position indicated in Figure 5, while at the same time, the spring (29) is placed under tension again.

lf it is desired to eliminate the feature causing the valve head to descend directly, the stop pin (39)-vmay be raised lby turning the crank pin (42) and it will then be sufficiently high to never touch the lugs (36).

l claimt l. A valve of the character described adapted to be actuated by screw action, having means associated therewith for imparting?straightlongitudinal motion to the same for electing a rapid action of thevalve, in combination with means for rendering ,the former means active during the initial screw action in a downwarddirection.

2. A valveof the characterdescribed com-. prising a stem adapted to be actuated by screw action, a valve he-adslidable thereon, spring means tending to impart endwisemotion to the valve head relativeto the stem, means normally preventing suchv motionv and means for rendering thelatterv -means ina-ctive at predetermined times. i Y 3; A valve of the character described-comprising a stem adapted to be actuated by screw action, a valve, head slidablethereou, spring means tendingto` impart endwise motion to the valve head relative to the stem, a pin extending, from the stem into a transverse groove in the valve head normally preventing such motion andy means for causing said pin to register with a longitudinal groove atk predetermined times allowing the head to yieldto the spring action. l

4, A'valve of the charactergdescribed Icomprising a stem adaptedy to be actuatedv by screw action, a valve head slidable thereon, spring means tending tof-i`1npart enpdwise motion to the Vvalve head relative 'tothe stem, a pinV extending from the stem intoa transverse groove in they valve head nor mally ypreventing such motionl andv means for causing said pin to register with a lon-` gitudinal groove at predetermined times allowing the head to yield to the/spring action, comprising Va stop temporarily prevent# ing the valve head from rotatingwith the stein.`

5. A valve of the character described comprising a stem adapted to be actuated 'by screw action, a valvelhead slidable thereon having a lug risingk therefrom, spring means tendingjto impart endwise motion to the valve head 'relative to the stem, apin en tending from the stem` intol a -transverse groove in the valve head normally preventing=suc`h motion, and a stop in the path of the lugallowingthe latter to pass on in one direction only so as to prevent the valve head from rotatingrwith the stem in the other direction, whereby the pin: isV caused to register with a longitudinal groove which allows the valve head to yield to the spring action.

6. In a valve of the character described, a valve stem adapted to be turned, having n valve head thereon and means for preventing rotary motion of the head with the stem in one direction, comprising a' lug rising from the valve head and an axially `yielding stop extending into the path of the lug, the latf JOSEPH J. DUNNE,

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