Патент USA US2404804код для вставки
‘July so, 1946. F_ J_ LEE ‘ 2,404,804 FIRE EXTINGUISHING DEVICE Filed Oct. 16, 1944 ' 5 . Patented July 30, 1946 2,404,804 UNITED STATES PATENT OFFICE 2,404,804 FIRE EXTINGUISHING DEVICE Floyd J. Lee, La Habra, (yaliii,v assignor to John C. Burnam, Whittier, Calif. Application October 16, 1944, Serial No. 558,846 . 4 Claims. (Cl. 169—40) 1 2 This invention relates to ?reextinguishing ap paratus of the type employed in ?xed installations member is held in place by means includingyia fusible link, adapted on the fusing of the link to allow water or other ?uid pressure behind the spray head or nozzle to eject the closure member for automatically extinguishing ?res. Heretofore in different ?re extinguishing in~ stallations various types of spray heads or nozzles and allow operation of the apparatus. have been employed in connection with fusible link elements for controlling the operation of the It is an object,'therefore, of the present inven tion to provide a ?re extinguishing apparatus spray heads or nozzles. While many different types of spray heads or nozzles have been em which includes a closure member for a spray head or nozzle adapted to enclose the spray head or ployed in such installations they substantially all it) nozzle and permit the pressure of the ?re extin guishing ?uid to be continued through the nozzle include one or a plurality of small ori?ces which and the closure member. ' are exposed to atmospheric conditions. The fusi Another object of the present invention is to ble link means which are employed for starting provide a ?re extinguishing apparatus‘ in which a the operation of the spray heads or nozzles in closure member for‘ a spray head or nozzle is sup prior installations have always actuated some plied, which closure member is adapted to be type of valve mechanism which controls the sup ejected by the pressure behind the ?re extin-_ ply of water to the ori?ce orori?ces of the spray guishing fluid but is also retained from being so heads or nozzles. These ori?ces frequently be ejected by means including a fusible release link. come closed when the nozzles or spray heads are not operating, with the result that the installa 20 The ?re extinguishing apparatus of the‘present invention will be understood ‘from the following tion cannot be relied upon for automatically ex description of the preferred example of the pres tinguishing the ?re, when such ?re arises. ent invention. ‘I’have, therefore, described the It is the general object of the present invention preferred example of the invention in connection to provide a ?re extinguishing apparatus for ?xed installation which is constructed and arranged 25 with the accompanying drawing, in which Fig. 1 is a elevation, partly in vertical section; so as to prevent the ori?ces of the spray heads or nozzles from becoming plugged, when the appa Fig. 2 is a section on the line 2—2 of Fig. 1. ratus is not in operation. Referring to the drawing, i indicates a supply In the usual practice of controlling a spray line for water or other ?re extinguishing ?uid. head, a valve means is interposed between the I have elected to show a form of the‘ invention spray head and the liquid supply means, which‘ in which a so-called “fog nozzle” 2 is employed. valve means is operated ‘by a fusible link. In ac The fog nozzle 2 illustrated is of the conventional cordance with the present invention the means type which contains a number of pairs of ori?ces which control the ?ow of ?uid through the spray 3 and 4. Each pair or" ori?ces is arranged to head is placed beyond the spray head so as to produce jets of ?uid, which jets impinge one maintain all of the ori?ces of the spray head im against the other for breaking up the ?uid into mersed in ?uid during the period of time when and the apparatus is inoperative. . Thus in the apparatus of the present invention instead of interposing a valve mechanism between the spray head and the source of ?re extinguish ing liquid, the spray head is surrounded by a closure element and the ?re extinguishing liquid allowed to ?ll the closure element and to remain within and also surround the portions of the spray head or nozzle. In this manner the spray head or nozzle is maintained in condition for instant operation on removal of the closure“ member - ‘ a uniform spray or fog. Obviously any other type of nozzle or spray head may be substituted in the apparatus of the present invention for the particular fog nozzle 2 illustrated. However the apparatus of the present invention is of particular value when used in connection with a fog nozzle such as indicated at 2 in the drawing for the reason that such fog nozzles have superior ?re extinguishing properties, for the amount of water or ?re extinguishing ?uid employed, over other types of heads or nozzles. Utilization of fog nozzles in ?xed installations has, however, been therefrom. Means for instigating the operation of the apparatus is applied by removing, in the 50 considerably hampered by the fact that the ori?ces of suc‘ip fog nozzles are particularly sus event of ?re, the closure member from the spray head or nozzle. ' In the ?re extinguishing apparatus of the pres ceptible'to being plugged when exposed to the atmosphere so that in'past practice the fog ent invention the spray head or nozzle is sur nozzles could not always be relied upon for sta rounded by a closure member and this closure tionary ?re extinguishing installations. i . 2,404,804 4 ' \ The fog nozzle 2 is indicated as attached to the Since the fog nozzle 2 has been at all times ? led supply main I by means of a coupling 5 which is and surrounded with the ?re extinguishing ?uid threaded to the base 5 of the fog nozzle. A ring there is no danger of clogging of the ori?ces ‘I is provided which is shown as threaded to the thereof and the ?re extinguishing nozzle will im base 6 of the fog nozzle 2. With other types of 5 mediately commence its intended action. spray heads it is obvious that other means may It is to be understood that while the particular be employed for ?xing the position of the ring example of the invention herein described has ‘I. The ring ‘I is provided with an annular groove beenproven to be well adapted to carry out the holding annular, packing 9. ‘A closure member ' objects of the present invention, various modi ID is formed shaped to enclose the head of the l0 ?cations and changes may be made and this in fog nozzle 2 and having a ?anged base 8 adapted vention is not limited to the speci?c example to engage the packing 9. The particular shape shown, but is of the scope set forth in the ap of the closure member I6 will vary in accordance pended claims. with the shape of the nozzle or spray head to I claim: be covered, being indicated in the drawing as 15 ' 1. An apparatus for exteriorly controlling the of a dome form and of sui?cient size to be spaced movement of ?re extinguishing fluid through a slightly from the fog nozzle 2. The essential spray head of a ?re extinguishing installation, characteristic, however, of the closure member said apparatus including a ring member to be ?xed to said installation, a dome-shaped closure member for enclosing said spray head and form ing a ?uid-tight seal with said ring member, and clamping means for releasably clamping said clo ID is to provide a closure adapted to ?t over ‘the ‘ spray head or nozzle employed said closure being closed at its lower end, as indicated at I2; and adapted'at its upper end to have a liquid-tight seal with the ring ‘I immovably ?xed to the supply line 1 I sure member against said ring-shaped member, or some element immovably attached said clamping means including two pivoted levers, thereto. In the apparatus of the present invention no one of which is pressed against said closure mem ber near the pivot point of said levers, one of said valve means need be interposed between the nozzle 2 and the supply main I but it is the in levers contacting said ring-shaped member, and enclosed Within the member I0. As thus used it will be seen that the hydraulic pressure within ' the closure member II! will act to eject the closure member I0 from its position unless the member 35 said apparatus including a ring member to be a fusible link interconnecting the other lever with tention that the ?re extinguishing fluid will ?ll said ring-shaped member. the space within the closure member I0 and 30 2. An apparatus for exteriorly controlling the thereby surround the nozzle 2 or other spray head movement of ?re extinguishing ?uid through a I In is restrained from so moving. _ Clamping means are‘provided for restraining the movement of the closure member ID, said clamping means comprising levers l3 and I4 and a fusible link I5. spray head of a fire extinguishing installation, ?xed to said installation, a dome-shaped closure member for enclosing‘said spray head and form, ing a fluid-tight seal with said ring member, and clamping means for releasably clamping said clo sure memberagainst said ring-shaped member, said clamping means including two pivoted levers, The members I3 and I4 are 40 one of which is pressed against said closure mem; ber near the pivot points of said levers, one 'of pivoted together, as indicated at I5, and the mem ber I3 is indicated as adapted to press against the bottom wall I2 of the closure member, as indicated at H. The lever I3 is curved upwardly to about the elevation of the ring 'I and is pro vided with an ear I8 adapted to engage a head I9 on the fusible link I5. The fusible link I5 is . provided with an eye 20 at its opposite end which said levers'contacting said ring-shaped’ member, and a fusible link interconnecting the other lever with said ring-‘shaped member, said fusible link ' being proportioned to apply tension to the link age for forcing the closure member against said ring-shaped member. ' 3. Apparatus for controlling from the exterior ?ts over a pin 2I extending upwardly from the ring 1. The lever I4 is curved upwardly and 60 the discharge of liquid from a spray head of a ?re extinguishing installation, said apparatus includ then inwardly as indicated at 22 and provided ing‘ a ring‘member ?xed ‘to said installation, a‘ with a fork 23, the ends of the fork having dome-shaped closure member enclosing said head rounded surfaces 24 for engagement with the and having its’ open‘ end adjacent to said ring face of,the ring ‘I. The ring ‘I is provided with member ?xed to said installation for forming a an abutment 25 which is adapted to contact the link “between the fork 23 and thereby limit the ?uid-tight seal, and clamping means including shifting of the clamping means to the left as viewed in the ?gure. The link I5 should be made tacting said closure member near the pivot point, of su?icient length so that it takes a slight com two levers pivoted together, one of said levers con-' said levers being secured to said installation. 7 4. Apparatus for controlling from the exterior pression or springing of the levers I3 and I4 to place the clamping element in the position indi 60 the discharge of liquid from a spray head ofga ?re extinguishing installation, said apparatus in cated. Because of the leverage indicated there cluding a ring member ?xed to said installation, is thereby established a very considerable pres sure against the closure member I ll, forcing a ' a dome-shaped closure member enclosing said head and haping its open end adjacent to said compression of the packing material I9 to insure ring member ?xed to said installation for form adequate sealing of the apparatus. With the apparatus indicated, it will be obvious that in the event of ?re, fusing of the link I5 by heat will liberate the lever I 3 of the clamp and thereby permit the clamp to release the closure member Ill. The closure member 310 will then be forced from its position covering the fog nozzle 2. ing a ?uid-tight seal, clamping means including two levers pivoted together, one of said levers contacting said closure member near the pivot point, said levers being secured to said installa tion, and a fusible link interconnected between one of said levers and said installation. FLOYD J. LEE.