US1316541A - Wilbereorce beecher hammoito - Google Patents

Description

W. B. HAMMOND.

COMBINED HEATING AND SPBINKLER SYSTEM.-

APPLICATION FILED MAR. 7, ,1.919.

1,316,541, ImmasepI, 16,1919.`

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vvimnnroncn Benen-ra HAMMOND, or aUB-Unnnarn, MASSACHUSETTS.

COMBINED HEATING AND SPRINKLER SYSTEM.

Specification of VLetters*Patent Patented Sept. 16, 1919.

Application led March 7, 1919. Serial No. 281,286.

To all whom 'it may concern.'

Be it known that I,`Wi1,BERroncn Bnncnnn HAMMOND, a citizen of the United States, residing at Auburndale, in the' county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Combined Heating and Sprinkler Systems; and I doV hereby declarethe following'V to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichitappertains to make and use the same.

This invention relates to combined heating and sprinkler-systems in which a circulation of hot water may be `maintained through the distributing pipes of an auto-4 matic sprinkler system.

The primary object ofthe invention is `to provide improved means :tor preventing the communicationof heat from the circulating water to the sprinkler heads so that a temperature which is effective for heating purposes may be maintained in the circulation pipe without danger of raising the temperature at the sprinkler heads beyond a safe point To this end the Apresent invention "contemplates connecting the sprinkler heads with the circulation Vpipe by means of offset portions each of which is provided with means inthe natureof a check valve permitting water to enter the oii'set but obstructing vits return into the circulation pipe, and also permitting a substantially unobstructed discharge of water through the otl'set upon the release of the sprinkler head. It is preferred to further insure against circulation of water in the oifset by confining therein, `between the valve and the sprinkler head, a

permeable mass of material, such as flaky `The invention furtherjconsists in certain novel features of construction and arrangement of parts tending to produce amore compact and better looking system, and which will behereinafter described and deined in the appended claims. y y

The invention will be readily understood from an inspection of the accompanying drawing illustrating the preferredfeinbodiment of the invention and the following detailed description ofthe `construction therein shown. l

In the drawing,Figure 1 is 'a view in side elevation of' a portion:l of a combined heating and sprinkler system 5 Fig. 2 is a detail view 1n vertical longitudinal section of one o f the sprinkler offsets; and Fig. 3 is a sectional view taken on the line 3--3 of Fig; '2.

As shown in the drawing a portion of the pipe through which the hot water circulates and which also serves to supply the sprinkler heads is indicated at` 5 and consists of substantially horizontal sections that are cou.-

-valv'es with which the sprinkler offsets are `provided severally consist of a ball 10 which is `arranged* to be seated normally on a valve seat 11 that is formed in the T 6, surrounding the opening which aiords communication between theV circulation pipe and the oiiset; In order to prevent conduction of heat through thevalve the 'ball 10 consists of a hollow shell which isfilled with asbestos or other non'- conducting material. The function of the check valve is to permit water from the circulation pipe t0 enter the `offsets and to obstruct its return into the circulation pipe and thus to prevent circulation of the water within the offsets.

`As an additional means for insuring that no circulation of water shall take place in the oifsets, `a quantity of flaky graphite, sand, or other granular material is introduced into each of the offsets after the ball has been positioned on the valve seat. The water which is permitted to enter the oit'- sets, thoroughly permeatesthemass of material contained therein, producing a mix- 100 ture which indicated at 12, in Fig. 2, and

which isof suiiicient density to resist Vrelative motion of its particles and thereby prevent Vcirculation within the offsets but which is `at the same time fluid'enough so that it will 105 'not stick inthe oii'sets when the sprinkler headsare released, but will be easily and quickly forced therethrough and discharged through the sprinkler heads.

Uponi'elease of a sprinkler'head. the mix- 110 ture of water and the granular material will be quickly and easily forced through the offset by the pressure of the water in the system, until the mixture is all discharged from the sprinkler head, and the ball will be carried up through the offset and deposited in a pocket 13 which is formed in the coupling member 8 opposite the end which is connected with the offset. The curve of each offset is of sufliciently long radius to insure that neither the mixture nor the ball will stick in the offset. In order to prevent the escape of the ball through the open sprinkler head the interior surface of the coupling member 8 is formed with a plurality of longitudinal ribs 14, as shown in Fig. 3, which closely confine the ball ,and guide it into the pocket 13. With the ball. thus lodged in the pocket 18, the escape of the water is unobstructed. The ball'may be replaced on the valve seat and the offset refilled with flaky or granular material by removing a plug 15, which normally closes an opening in the coupling member 8 opposite the upper end of the Offset.

Heretofore offsets of considerable hori-4 zontal length have necessarily been employed, in order to prevent communication of heat to the sprinkler heads by circulation of the heated water in the offsets, and also in order that trapped gases may accumu- -late in the offsets in suiiicient quantity to `shorter osets and accordingly there is less danger of the offsets becoming broken off or injured and the general appearance 'of the system is improved.

Any suitable form of check valve which will open upon the release of the sprinkler head so as not to obstruct the How of water through the offset, may be used in place of the ball check valve illustrated. .1 l VVarious kinds of granular or llocculent material may be utilized in the offsets, it bea ingessential only that the material used will not cake 'or harden from heat and will fill the offset in such a manner that the water .will readily percolate through the mass to render it `capable of being easily discharged from the offset upon the release of the sprinkler head. The use of flaky graphite how- `ever is' preferred because of its low friction qualities which permit it to be easily and;

quickly forced through the offset. It should be understood, moreover, that the use of any such n'iaterial in the offsets is not considered essential to the broader features of the in vention, inasmuch as it may be found that sufficiently good results will be obtained by the use of check valves alone. It is also ,pointed out that the present invention is not tem having, in combination, a pipe for the'` circulation of heating water, sprinkler offsets branching from said ipe, sprinkler heads connected with the o sets, and means within the osets for normally preventing circulation of water therein and adapted to permit a substantially unobstructed discharge of water when the sprinkler heads are released.

2. A combined heating and sprinkler system having, in combination, a pipe for the circulation of heating water, a plurality of sprinkler offsets branching from said pipe, sprinkler heads Connected with the offsets, and means wit-hin the offsets for preventing circulation of water therein and adapted to be expelled from the offsets upon the release of the sprinkler heads.

3. A combined heating and. sprinkler system having, in combination, a pipe for the circulation of heating water, a plurality of sprinkler offsets branching from said pipe, sprinkler heads connected with the offsets, and a permeable mass of material normally contained in each offset for preventing circulation of water therein.

4. A combined heating and sprinkler system having, in combination, a pipe for the circulation of heating water, a plurality of sprinkler offsets branching from said pipe, a sprinkler head connected with each offset, a mass of granular substance normally confined in each oset to prevent circulation of water therein and adapted to be discharged with the water upon the release of the sprinkler head connected therewith, and means for preventing said granular material from entering the circulation pipe and for permitting the entrance of water from the circulation pipe into the offset.

5. A combined heating and sprinkler system having, in combination, a pipe for the circulation of heating water, a plurality of sprinkler oisets branching-from said pipe, a sprinkler head connected with each offset, and a device in the offset between the sprinkler head and circulation pipe normally closing the offset and constructed and arranged tol open communatn between the circulation pipe and the offset for the substantially unobstructed flow of water when the sprinkler head opens.

6. A combined heating and sprinkler system having, in combination, a pipe for the circulation of heating Water, a plurality of sprinkler osets branching from said pipe, a sprinkler head connected with each offset, and a normally closed check Valve in the offset spaced from the sprinkler head to secure a dead column of Water between the valve and the sprinkler head and adapted to open toward the sprinkler head When said head opens to permit a substantially unobstructed flow of Water from the circulation pipe through the head. e

7 A combined heating and sprinkler system having, in combination, a pipe for the circulation of heating Water, a plurality of sprinkler osets branching from said pipe,

WILBERF ORGE BEECHER HAMMOND.

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

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