US857187A - Dry-pipe valve. - Google Patents

Description

No. 857.187. PATEHTED JUNE 18, 1907- J. a. MELGGN, DRY PIPE VALVE. v APPLIUATIDIT FILED SEPT. 11. 1902.

2 3HEETSSEEET 1.

PATENTED JUNE 18, 19074 J. G MELOON. DRY PIPE VALVE.

APPLICATION FILED 8131111. 1902.

2 SHEETS-SHBET 2.

. UNITED STATES.

GENERAL FIRE EXTINGUISHER GO 'PORA'IION' OF NEW YORK PATENT OFF-10E.

eoNa'riiAu c. Masons, on PnovwsN os, ano nt ISLAND, essioson o MPANY, OF NEW YORK, N. Y., A cos- DRY-PIPE vAws.

Specification of Letters Patent.

' Patented June 18; 1907'.

.i 'biimn gaa opt-ember 11.1502. sum to. 12am.

1'9. .aZl whom it may concerns" it known that I, JONATHAN C. 'MELQON,

ofthecity ande'ount of Providence (ind State of Rhode Isian have invented certain new and useful Improvements in Day Pipe Valves, (Case A;) and I do hereby e- .clare the following specificationfta ken connection with theiacoompan n'g drawings; forming apart of the same, to a full, clear, 'andexact' description thereof.

The invention relates to pipe valves (or-automatic sprinkler systems; inwhich a I ater valve is .held close against the water ssure in. the'supply pipe by means of aom the water way, and so that-when tlie" valve is 0 mod there will be a free and'im'-- obstructe passage for the water-.through the valveeasin'g.

To that en'd the invention consists i marily in the combination, with the va we of meansfor withdrawing said valve out" oi the water way when, the apparatub isto oper'-' ate. The means for t-hus withdrawhig vthe valve rnaj be either hydraulic orm'echanical.

The invention further consists of the coin;

binations and 81mm ements of t; h after described and c aimed.

' Referring'to the drawings, Figurefl is' a vertical section of a dry pipe val e embody ing my invention, Fig. 2 is a sirnhar vertical section showing a modified'form of valve,

Fig. 3 isa similar vertical section show the same form of valve as in Fig. 2,-but'w'1th a' different means for withdrawing the valve Fig.4 is a vertical section on the line Y ,Y of

Ifigs. 2 and 3, and F 5 is a horizontal tion on the line X X of Fig. 3.

Referring to Fig. 1, A represents-the valv jei casing adapted to be connected at its lower; end a. with the water supply pipe and-at its upper. end a. with the do to the sprinkler system. ed valve; shown inthis figur'efas a spherical very pipe leading valve, adapted toseat pn -one side against the fixed valve seatb, and on'the other. side a ainst the valve seat'c' forined on the mom-- a e:member, As shown in Fig. '1', the

' movablemembenCis connected to the valve casing bya flexible connection c, and so that B is a double seat- I said movable member may move from the position shown in full lines to the position indicated by dotted lines ,in Fig. 1. The space betweenthe fixed valve'seat b and the -movable member C constitutes the intermediate chamber, which is normally open to the atmosphere through .a-drip pipe in the usual manner.

The Iaive' casing A is rovided with an ex tension formi ac lin iczilchar'nber E, the

E. in this chamber there is a piston This istonis connected to the valve B-by a suitaii ton and to said va ve. A small orifice or out outer end of w ich 151 closed by a head or sip I 6 5 let e is formed in the head E to permit the;

escape of air from the chamber E as the piston travels back therein.

[scribed 1s as follows; Theeir'pressure in'the 'distributin pipes acting'upon the movable member C orcesthe valve seat-c against the valve 113, said-valve being in turnforoed ainst the fixed seat 6, t erehy excluding d-entrah'ce of water from the supply pi e.,

from the position shown in full lines to theposition indicated in'dotted lines in'Fig. .1,

it; and thus withdrawing the-valve wholly from,-thewater, way a'ndleaving a free and "unobstructed passage for the water throu h valve casing. e pistonFisprefei-ab providedwith a cup aching which wil make a tight joint Wit 'the wal of the charm bet E, and'uprevent the escape of water {through the orifice a, when the valve- B is .opened. i-

Fig. 2 shows a similar-construetion'and arrangement of parts, except that the valve B is here shown as a flatvalveg'gand the movable urember O is connected tomhe'valve casing in a sh htl 'diflerent manneriw With the spheric va eshown iii-13115.31,"it-is neces below the .-point at which it"zwill hold the.

' water pressure will serveto lift the valve B thereby pullingthe valve B to one side into a space in the valve casing formed to receive le conne'ctin link f, pivoted to said pis- "The operation of the apparatus above desary to provide for a considerable movement of the movablemember. \Vith the fiat valve shown in Fig, iZ'amateri-ally less movement of the movable-meinber is required, and consequ'ently instead of em loying an elon ated flexible connection, suc as shown-in 1g. 1, the movable member is shown in Fig. 2 as" connected with the valve casing by connection a which need be simply of ag ielding drawn outof the water way.

said projections beingadaptedto enter re- -ces'ses b b formed on opposite edges of the valve B, as shown in Figsml and 5. As wili be -readily understood from the drawin s,-

- the 'projectionse a, will serve to limit t e extent to which the val a will move upward with the movable mem er 'in o ning, and will'also serve to-guide the va ve as it is withdrawn from the water way. By extending the rejections into the cylindrical casing E, as s own in Fig; 5," said rojections wi 1 .also serve -to support the va ve in its with drawn position, andpreventit from falling 35 down into the bottom of the casing. Inall other respects the operation of the construction shown in Fig. 2 is the same as that of the construction shown in Fig. 1.

In Fig. 3 mechanical means, in the formof a spring G, is employed, instead of hydraulic means, for pulling the valve B out of the'water. way. Otherwise the construction is,the same as in Fig. 2. As will, be understood,

' when the air ressure'is on the system the flat valve B will be firmly clamped and held between the "two valve seats b c. Consequently the spring G may be held under tension at this time. When the air pressure is reduced so that the valx e B ceases. to be firmly clamped, the spring G will act to pull said valve out of the water way.

The valve casing 1s provided with. a suitable hand hole A, through which access may be had to the valve for the purpose of rese'ating the same. Where a spring is employed to withdraw the valve, the valvemay be p'ro vided with an eye 1), adapted to be engaged by a hook or other suitable instrument, and by means of which the valve may be drawn back to its seat, and held there against the pull of the spring until the valve has been firmly clamped between the two valve seat-s.

In addition to providing a free and unobstructed passage for the water through the from its position in thewater wayalso fur: nishes ail-effective means for preventing columni'ng of the valve. With the valve thus become accidentally reseated or columned.

I While it is preferred to have the valve entirely leave the waterway, it is not necessary that this should be done, as with a sufiicie'nt movement of the movable valve seat the -valve may move only partially out of th water-way and; still provide sufficient. a for the passage of the water, and it isg'evi eat that so far as the feature of non-columningffis will effectively prevent its being reseated qr. columned. a

. to secure by Letters Patent is:

said valve closed by pressure intlwsystm, and mechanism arranged'xto withdraw said valve from the water-way when said valve is released, substantially as described. 1

2. In a dry pipe valve, the "combination, with the watervvalve, of means for holding arranged-to withdraw said valve -from the water-way when said valve is released, substantially as described. Ina dry pipe' valve, the' combination, with the water-valve, of means for holding said valve closed by pressure in the system,- and mechanismactuated. by water pressure from. the supply'pipe'when said valve is released, arrangedto withdraw said valve from the water-way, substantially as described.

. '4. In*'a dry pipe valve,.- the combination, with a double seated valve, .of'a' fixed seat for said movable seat being'rnounted upona withdrawing said valve from the water-way when the pressure in the systemis reduced to release said valve, substantially as described. "5. In a dry pipe valve, the combination, with the water-valve, of means for holding -said valve closed by pressure in the system, means for limiting the 11 )Ward movement o'f "said valve when the valve is released, and

water-way; substantiallyas described. 6. In a dry pipe valve, the combination,

said valve closed by pressure in the s stem,

from the water-way when said valve is re leased, and means for guiding said valve .in its movement, substantially as described.

7. In a dry pipe valve, the combination of a valve, a fixed seat for said valve and a movable seat for said valve between which fixed valve casing, the withdrawal of the valve 1' and movable seats the valve is clamped as i What I claim as my invention anilidesiire 1'. In a dry pipe valve, the-combination,- withethe water-valve, of meaus'for -holdm'g 'means for withdrawing said valve from the with the water-valve, of means for holding mechanism arranged to withdraw sai valve,

withdrawn from position, it cannot ofcoui'se concerned, a partial withdrawal of the valve;

said valve closed by pressure in the system, and mechanism actuated :by water pressure said valve,- a movable seat for said valve,

movable part adapted to be acted upon by. the pressure-in the system, and' meansfor for said valve and a movable seat for said uisite pressure is maintained 1011 as the requisite pressure is maintained m t e system, said valve belng released and free to'leave the water-way when the pressure in the system is reduced, substantially.

as described.

8. In a dry pipe'valve, the combination,

with the valve casing, OI & valve, a fixed seat valve, between whic fiiced andm'ovable seats the valve is clamped as long as the re uisite pressure in the system is maintaine said valve being released and free to leave the ,water-wa when the pressure in the system is reduce ,and said valve-casing being rovided'with archamber to receive said. va ve, substantially asdescribed.

9. In a dryipipe valve, the combination of a valve, a fixed seat for said valve, a movsaid valve being released and free to leave the water-way. when the pressure in the sys-' tem is reduced, substantially its-described.

1,0. In a dry pippvalve, the combination 5 of a valve, a fixed seat for said valve, 8. movleavethe water-way w able member subjcted to the pressure in the system, a valve seat carried -b said movable mgmbei', betwen'which fixe se ts the valve is clam d as long as the requisite pressure is-ma ntained in the system, id valve-bein released and free to en the pressure inthe system is-reduced, and means for arresting t e movement of the valve in openingbefore the movable member has reached the limit of wits movement, substantially as described.

11. In a dry pipe valve, the combination of a valve a fixed seat for said valve, a m0vable seator said valve, between which seats the valve is normally clamped, said valve be- ;and means to guide said va ve in its move ment out of the water-way,'substantially as described.

12. In a dry pipe valve, the combination of a valve, a fixed seat for-said valve, a mova le seat for said valve, between which seats the valve is normally clamped, said valve being free to leave the water-way when released, means to limit the movement of said valve in opening, and means to guide said valve in its movement out of the water-way, substantially asdescribed.

in the system,

and movable.

ing free to leave the waterwa[y when released,.

16 In a -dry pipevalve, the combination,

with thewater valve, of means for holding said valve closed-by pressure in the system, and means made operative by the opening of said valve for moving said valve out of working relation with its seat, substantially as described.

14. The combination with a valve, I of means for holding said valve closed against pressure by the action of a less pressure, and means other than the valve operated by fluid pressure upon the reduction ofthe hold' pressurefor withdrawing said valve to one side of the valve seat.

15. Th means for holding said valve closed against pressure by the. action of a less ressure, a movable member subjected to fluid when the valve opens for withdrawing said valve to onev side of the valve seat.

16 The combination with a valve,"0f means for holding said valve closed against pressure by-theiaction of a less pressure, a

piston subjected to fluid pressure when the valve opens for wwithdrawing said valveto one side of the valve seat.

17. The combination of a chamber, opposing inlet and outlet valve seats, a valve between said valve seats, means for holding the valve and valve seats in engagement against pressure in the inlet by the action of a less pressure, and -a movable member subjected to the pressure-in thenhamber' for withdrawing saidvalve from between said valve seats.

18. The combination of a chamber, a su ply inlet, amovable member separating t e chamber from the system, an outlet through said member, a valve closing said inlet and outlet and held to-its seat by the pressure on the movable member, and means for with e combination with a valve, of

ressure drawing said valve from between the inlet and outlet the system.

19. The combination of a chamber, a su ply inlet,- a movable member separating t e chamber from thesystem, an outlet through said member, a valve closing said inlet and upon a reduction of pressure in outlet. and held the movable member, a iston subjected to the pressure in the cham er for withdrawing the valve from between the inlet and outlet.

JONATHAN c. 'MELOON.

Witnesses: W. H. Tm'ms'roN,

J. H. THURSTON.

to its seat by the pressure on

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