US1303130A - Automatic fire-extinguishing- apparatus - Google Patents

Automatic fire-extinguishing- apparatus Download PDF

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US1303130A
US1303130A US1303130DA US1303130A US 1303130 A US1303130 A US 1303130A US 1303130D A US1303130D A US 1303130DA US 1303130 A US1303130 A US 1303130A
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siphon
acid
tank
chemical
fire extinguishing
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/023—Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being expelled by compressed gas, taken from storage tanks, or by generating a pressure gas

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  • This invention relates especially to chemical fire extinguishing apparatus in which the distributing system comprising automatic or other distributing devices may, if desired, be of the dry pipe type of system and may have connected therewith any suitable arrangement to cause a suction or pressure reduction on the emergency operation of the system;
  • a chemical pressure liquid supply tank maybe connected to the distributing system to supply the same under emergency conditions and this tankmay be put into operation by withdrawing the acid from an acid chamber by siphon action, the siphon preferably having its discharge end extending into suitable liquid preferably into a small amount of similar acid in a priming distributing cup which minimizes the chance of premature contact of the acid and can bonate material when the suction connection acts on the siphon.
  • Figure 1 is a vertical section.
  • Fig. 2 is a similarview showing a modified construction.
  • the distributing system may comprise one or more suitable supply pipes or risers l with which any desired number and arrangement of distributing pipes, suchas 2, may be connected to support the automatic sprinkler heads or other distributing devices 3 at the desired points.
  • suitable hose connections 5 may be included in the distributing system so as to operate the connected hose lines when the corresponding valves 1 are opened.
  • the distributing system is preferably though not necessarily of the dry pipe type and may be supplied with extinguishing liquid from a suitable pressure liquid supply tank, such as 8, which may be charged with water or other suitable eXtinguishing liquid 22 in which, if desired, the carbonate material may be directly dissolved so as to create pressure in the tank when the sulfuric acid or the like is. supplied.
  • the distributing system may be connected with the tank in any suitable way as through a connection or pipe 9 extending adjacent the bottom of the tank and for dry pipe work it is in some cases de sirable to have a suitable dry pipe or check valve 6 arranged between the tank and the system, the valve 7 being if desired normally held on its seat by spring pressure suiiicient to require a few pounds to initially open it and thereafter allow the substantially free passage of the liquid into the system, and it is of course understood that suitable reduced area venting or equalizing connections may be formed between the air space of the tank and of the distributing system in any desired way to take care of temperature expansion.
  • the acid may be supplied to the tank by siphon action in many ways and if desired the acid chamber 15 of lead, porcelain or other suitable material may be mounted in a removable acidcasing 1O normally bolted or otherwise secured to the upper part of the tank itself so that when the casing is removed the acid chamber is simultaneously removed and supported on the lower portion or support 18 of this casing.
  • the acid discharging siphon 14 preferably of lead or other acid resisting material may be of such size as to discharge the acid at the desired rate and may have its admission leg 17 arranged within the acid chamber adjacent the bottom of the acid 16 therein, and have its discharge end dipping into liquid preferably into some liquid which does not undesirably react on contact with the acid, such for instance, as an additional priming charge of the same acid used in the acid chamber.
  • This may be conveniently arranged by providing an acid priming distributing cup or container 20 supported from the discharge end of the siphon itself orby a suitable support, such as 19, from the acid chamber or both, this cup being charged with the desired amount 21' of suitable liquid, such as sulfuric acid, etc.
  • the distributing cup should have its upper edge, at least, above the normal level of the carbonate or other liquid 22 in the tank so as to prevent undesirable mixing and the acid chamber should be sufficiently higher so that the normal level of the acid 16 therein will be a foot or so above where no special arrangements are used to create an air pressure on the acid in the chamber to facilitate its discharge under emergency conditions.
  • the acid chamber is located above the body of the tank so as to give the desired initial starting and discharge head as soon as the siphon actlon 1s init ated by a suitable suction, that is to say, a pressure reduction created in or in connection with the distributing system under emergency conditions in any suitable way.
  • This suction may be caused merely by the release of the normal air pressure in the dry pipe sys tem and may operate through a suitable suction connection 11 connected with the acid discharging siphon 14 preferably somewhat below its highest point so that this suction action draws the acid into the admission end ofthe siphon and up over its top so that it descends, and by gravity and this suction action starts the regular siphon operation.
  • valve casing 12 may if desired be mounted within the acid casing 10 in some instances, so that the float valve 13 will automatically close when the chemical pressure increases sufiiciently in the tank so as to force the acid up throughthis connection.
  • hen acid is used in the priming cup 20 it is of course drawn up into the siphon somewhat by the suction used to start the siphon action and when similar acid is used in both this cup and the acid chamber there is no possibility of undesirable action when the acid from the chamber first starts down through the siphon.
  • FIG. 2 shows another such arrangement in which the discharge end of the siphon enters tllQCiIIbOIlfltG liquid itself while undesirable mixture of the acid and liquid under starting conditions is minimized or prevented by the use of any suitable trap and seal of mercury, etc., in connection with this discharge operation of the siphon.
  • the discharge end or portion 27 of the siphon may in this case be formed or lined with vitreous material and may be connected by a suitable coupling 23 of any description to the upper portion of the siphon 14.
  • This lower portion of the siphon preferably within the carbonate liquid 22 of I the mixing tank is formed with a suitable 'lthis tubular member so'as to form a chamber or pocket adapted to contain enough mercury or other suitable liquid 25 to exert the desired action on starting the siphon by the suction througlrthe suction connection 11 which may in this instance be provided with an automatic cut-off or float valve 13 above and outside of the removable acid chamber 10.
  • the suction draws the acid 16 into the admission end 17 of the siphon so that it rises and fills the upper portion thereof, the mercury forming the seal being simultaneously sucked up a few inches beyond its normal position in the trap in the discharge leg of the siphon so that the gravity head thus caused by the mercury is sufficient to equal the suction required to draw the acid through the upper part of the siphon and enable it to start down the discharge leg in which it attains suflicient velocity to push out the mercury seal, which may, however, together with any slight air cushion that may be above the mercury serve to prevent undesirable contact of the acid and carbonate liquor within the siphon or prevent proper starting thereof.
  • a dry pipe distributing system comprising automatic sprinkler heads and hose connection distributing devices, a chemical pressure liquid supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid casing communicating with said tank and containing an acid chamber, a siphon communicating with said acid chamber and having its discharge end communicating with said tank, a suction connection having an automatic float cut-ofl valve therein connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions, and means for preventing the undesirable contact-of the acid and carbonate material in the siphon on starting the same comprising a priming distributing cup mounted on the discharge end of said siphon and containing acid into which the discharge end of said siphon enters.
  • a distributing system comprising automatic distributing devices, a chemical pressure liquid supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid casing communicating with said tank and containing an acid chamber, a siphon communicating with said acid-chamher and having its discharge end communieating with said tank, a suction connection connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions and means for preventing the undesirable contact of the acid and carbonate material in the siphon on starting the same comprising a priming distributing cup mounted on the discharge end of said siphon and containing acid into which the discharge end of said siphon enters.
  • a distributing system comprising distributing devices, a chemical pressure liquid 7 supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid chamber, a siphon communicating with said acid chamber and having its discharge end communicating with said tank, a suction connection, connected to said siphon to start the same, and means for preventing the undesirable contact of the acid and carbonate material in the siphon on starting the same comprising a priming cup mounted on the discharge end of said siphon and containing liquid into which the discharge end of said siphon enters.
  • a distributing system comprising distributing devices, a chemical pressure liquid supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid chamber communicating with said tank and containing acid, a siphon communicating with said acid chamber and having its dis charge end communicating with said tank, a suction connection having an automatic cut off valve therein connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions and means for preventing the undesirable contact of the acid and corbonate material in the siphon on starting the same comprising a priming container mounted on the discharge end of said siphon and containing liquid neutral to said acid into which the discharge end of said siphon enters.
  • a chemical pressureliquid supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid chamber communicating with said tank and containing acid, a siphon communicating with said acid chamber and having its' discharge end co1nmunicating with said tank, a suction connection connected to said siphon to start the same, and means for preventing the unde sirable contact of the acid and carbonate material in the siphon on starting the same which the discharge end of said siphon enters.
  • a distributing system a chemical pressure liquid supply tank charged with can tinguishing-liquid containing crabonate material and chemical mixing devices comprising an acid chamber communicating with said tank, a siphon communicating with said acid chamber and having its discharge end immersed in liquid, a suction connection having an automatic cut-off valve therein connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions.
  • a chemical pressure tank charged with liquid containing carbonate material and chemical mixing devices comprising an acid chamber communicating with said tank, a siphon communicating with said acid chamber and having its discharge end extending below the normal level of the liquid in said tank, a suction connection connected to said siphon to start the same, and means for preventing the undesirable contact of the acid and carbonate material in the siphon on starting the same.
  • a distributing system a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon and communicating means comprising a suction connection with said distributing system to automatically start said siphon on the emergency condition of said system and eiiect the mixture of pressure producing chemicals.
  • a distributing system a chemical pressure tank, cooperating chemical mixing devices including a siphon and means connected to said siphon between its ends to automatically start said siphon on the emergency operation of said system and efiectthe mixture of the pressure producing chemicals.
  • a distributing system a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon normally sealed With liquid adjacent both its ends and means connected to said siphon between its ends and comprising a suction connection with said distributing system to automatically start said siphon on the emergency condition of said system and effect the mixture of pressure producing chemicals.
  • a distributing system cooperating with said tank and comprising a siphon normally sealed with liquid adjacent both its ends and means connected to said siphon between its ends and comprising a suction connection to start said siphon and efiect the mixture of pressure producing chemicals.
  • a distributing system In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon normally sealed adjacent both its ends and means connected to said siphon between its ends and comprising a suction connection with said distributing system to automatically start said siphon on the emergency condition of said system and effect the mixture of pressure producing chemicals.
  • a distributing system In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising an acid container and communicating siphon and means cooperating with said siphon and comprising a fluid suction connection between said siphon and said distributing system to automatically start said siphon on the emergency condition of said system and effect the mixture of pressure producing chemicals.
  • a distributing system a chemical pressure liquid supply tank charged with extinguishing liquid containing carbonate material andchemical mixing devices comprising an acid chamber communicating with said tank, a siphon communicating with said acid chamber and having its discharge end immersed in liquid, a suction connection having an automatic cut-off device therein connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions:
  • a distributing system a chemical pressure tank, chemical mixing devices c0- operating with said tank and comprising a siphon normally sealed with liquid adjacent both its ends, means connected to said siphon between its ends and comprising a suctionconnection to start said siphon and effect the mixture of pressure producing chemicals, and a cut oil device in said suction connection to prevent undesirable flow of liquid.
  • a chemical pressure tank cooperating with said tank and comprising a siphon normally sealed adjacent both its ends and means connected to said siphon between its ends and comprising a suction connection to start said siphon and effect the mixture of pressure producing chemicals.
  • a chemical pressure tank cooperating with said tank and comprising a siphon having its discharge end normally sealed with liquid, andmeans connected to said siphon between its ends and comprising a suction connection to start said siphon and eflect the mixture of pressure producing chemicals.
  • a chemical pressure tank cooperating with said tank and comprising a siphon having its discharge endnormally sealed, and means connected to said siphon between its ends and comprising a suction connection to start said siphon and effect the mixture of pressure producing chemicals.
  • a distributing system In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon normally having its discharge end sealed with liquid to prevent undesirable entrance of fluid into such discharge end and means connected to said siphon between its ends and comprising a suction connection with said distributing system to automatically start said siphon and effect the mixture of pressure producing chemicals on the emergency condition of said system.
  • a distributing system In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon having its discharge end normally sealed to prevent undesirable entrance of fluid into such discharge end and means connected to said siphon between its ends and comprising a suction connection with said distributing system to automatically start said siphon and effect the mixture of pressure producing chemicals on the emergency condition of said system.
  • a fire extinguishing apparatus having a tank for containing a solution of fire extinguishing element, an acid for reacting with said fire extinguishing element to form a gas to expel said fire extinguishing element, a receptacle for containing said acid, a siphon tube for conveying said acid to said fire extinguishing element when a fire occurs, and means for initiating siphon action by said siphon tube for conveying acid to said fire extinguishing element, said initiating means comprising a discharge portion, a pipe connection connecting said discharge portion with said siphon tube,there normally being an air space in said siphon tube to normally maintain the same inoperative, the discharge portion being normally closed, and means for maintaining the pressure in said pipe connection when said discharge portion is closed, the opening ofthesaid dischargeporclosed, the opening of the said discharge portion operating to drop the pressure in said pipe connection thereby to draw up acid a distance through said siphon tube to initiate the siphon action.
  • a fire extinguishing apparatus having a tank for containing a solution of fire extinguishing element, an acid for reacting with said fire extinguishing element to form a gas to expel said fire extinguishing element, a receptacle for containing said acid, a siphon tube for conveying said acid to said fire extinguishing element, a normally closed discharge portion, a pipe connection connecting said discharge portion with said tank, means for supplying pressure to said pipe connection, a second pipe connection connecting said first pipe connection with said siphon tube, there being a valve chamber in said second pipe connection, an inclination in said second pipe connection, the connection of said second pipe connection with said first pipe connection being at a higher level than the level of the connection of said second pipe connection with the siphon tube, and a float valve in said valve chamber adapted to rise and shut 03 communication through said second pipe connection as soon as the same is filled with the acid carried thereto by the siphon action, there normally being an air space in said siphon tube to normally maintain the same inoperative
  • a fire extinguishing apparatus having a tank for containing a solution of fire extinguishing element, an acid for reacting with said fire extinguishing element to form a gas to expel said fire extinguishing element, a receptacle for containing said acid, a siphon tube for conveying said acid to said fire extinguishing element, a sprinkler arm, fusible heads on said sprinkler arm, a hose connected to said sprinkler arm, control means for controlling the discharge through said hose, a pipe connection connecting said sprinkler arm with said tank, means for supplying pressure to said pipe connection, a second pipe connection connecting the first pipe connection with said siphon tube, there normally being an air space in said siphon tube to normally maintain the same inoperative, the fusible heads and controlling means being normally closed, the opening either of said .fusible heads or of said controlling means operating to relieve the pressure in said first pipe connection and thereby to force the acid through said siphon tube to initiate the siphon action.

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Description

E. L. THOMPSON, 1A. AUTOMATIC FIRE EXTINGUISHING APPARATUS.
APPLICATION FILED JAN. 2!, I914.
Patented May 6, 1919.
WITNESSES A TTOR/VEYS' MASNINGYO UNITED STATES PATENT OFFICE,
EVERETT L. THOMPSON, JR., OF DOVER, NEW JERSEY, ASSIGNOR T0 SYPHO-CI-IEMICAL SPRINKLER CORPORATION, OF CROTON-ON-HUDSON, NEW YORK, A CORPORATION OF NEW YORK.
Specification of Letters Patent.
Patented May 6, 1919.
Application filed January 21, 1914. Serial No. 813,360.
To all whom it may concern Be it known that I, EVERETT L. THOMPSON, J12, a citizen of the United States, and resident of Dover, Morris county, New Jersey, have made a certain new and useful Invention Relating to Automatic Fire-Extinguishing Apparatus, of which the following is a specification, taken in connection with the accompanying drawing, which forms part of the same.
This invention relates especially to chemical fire extinguishing apparatus in which the distributing system comprising automatic or other distributing devices may, if desired, be of the dry pipe type of system and may have connected therewith any suitable arrangement to cause a suction or pressure reduction on the emergency operation of the system; A chemical pressure liquid supply tank maybe connected to the distributing system to supply the same under emergency conditions and this tankmay be put into operation by withdrawing the acid from an acid chamber by siphon action, the siphon preferably having its discharge end extending into suitable liquid preferably into a small amount of similar acid in a priming distributing cup which minimizes the chance of premature contact of the acid and can bonate material when the suction connection acts on the siphon.
In the accompanying drawing showing several illustrative embodiments of this invention in a somewhat diagrammatic way Figure 1 is a vertical section.
Fig. 2 is a similarview showing a modified construction.
The distributing system may comprise one or more suitable supply pipes or risers l with which any desired number and arrangement of distributing pipes, suchas 2, may be connected to support the automatic sprinkler heads or other distributing devices 3 at the desired points. Also, if desired, suitable hose connections 5 may be included in the distributing system so as to operate the connected hose lines when the corresponding valves 1 are opened. The distributing system is preferably though not necessarily of the dry pipe type and may be supplied with extinguishing liquid from a suitable pressure liquid supply tank, such as 8, which may be charged with water or other suitable eXtinguishing liquid 22 in which, if desired, the carbonate material may be directly dissolved so as to create pressure in the tank when the sulfuric acid or the like is. supplied. The distributing system may be connected with the tank in any suitable way as through a connection or pipe 9 extending adjacent the bottom of the tank and for dry pipe work it is in some cases de sirable to have a suitable dry pipe or check valve 6 arranged between the tank and the system, the valve 7 being if desired normally held on its seat by spring pressure suiiicient to require a few pounds to initially open it and thereafter allow the substantially free passage of the liquid into the system, and it is of course understood that suitable reduced area venting or equalizing connections may be formed between the air space of the tank and of the distributing system in any desired way to take care of temperature expansion.
The acid may be supplied to the tank by siphon action in many ways and if desired the acid chamber 15 of lead, porcelain or other suitable material may be mounted in a removable acidcasing 1O normally bolted or otherwise secured to the upper part of the tank itself so that when the casing is removed the acid chamber is simultaneously removed and supported on the lower portion or support 18 of this casing. The acid discharging siphon 14 preferably of lead or other acid resisting material may be of such size as to discharge the acid at the desired rate and may have its admission leg 17 arranged within the acid chamber adjacent the bottom of the acid 16 therein, and have its discharge end dipping into liquid preferably into some liquid which does not undesirably react on contact with the acid, such for instance, as an additional priming charge of the same acid used in the acid chamber. This may be conveniently arranged by providing an acid priming distributing cup or container 20 supported from the discharge end of the siphon itself orby a suitable support, such as 19, from the acid chamber or both, this cup being charged with the desired amount 21' of suitable liquid, such as sulfuric acid, etc. The distributing cup should have its upper edge, at least, above the normal level of the carbonate or other liquid 22 in the tank so as to prevent undesirable mixing and the acid chamber should be sufficiently higher so that the normal level of the acid 16 therein will be a foot or so above where no special arrangements are used to create an air pressure on the acid in the chamber to facilitate its discharge under emergency conditions. With the arrangement shown the acid chamber is located above the body of the tank so as to give the desired initial starting and discharge head as soon as the siphon actlon 1s init ated by a suitable suction, that is to say, a pressure reduction created in or in connection with the distributing system under emergency conditions in any suitable way. This suction may be caused merely by the release of the normal air pressure in the dry pipe sys tem and may operate through a suitable suction connection 11 connected with the acid discharging siphon 14 preferably somewhat below its highest point so that this suction action draws the acid into the admission end ofthe siphon and up over its top so that it descends, and by gravity and this suction action starts the regular siphon operation. It is desirable to provide an automatic cutoff valve in the suction connection at any convenient point far enough above the point where it meets the siphon so as to prevent interference with the starting action, and for this purpose the valve casing 12 may if desired be mounted within the acid casing 10 in some instances, so that the float valve 13 will automatically close when the chemical pressure increases sufiiciently in the tank so as to force the acid up throughthis connection. hen acid is used in the priming cup 20 it is of course drawn up into the siphon somewhat by the suction used to start the siphon action and when similar acid is used in both this cup and the acid chamber there is no possibility of undesirable action when the acid from the chamber first starts down through the siphon. Its continued discharge of course first fills the priming cup and overflows the same around the edges which may, if desired, be fluted or otherwise formed so as to distribute the acid more or less throughout the tank, the violent chemical action taking place with the carbonate material also contributing to this distributing or mixing action.
Other means, such as a liquid seal or valve may be employed to prevent undesirable or premature mixing of the acid and carbonate material in the tank when starting the siphon and Fig. 2 shows another such arrangement in which the discharge end of the siphon enters tllQCiIIbOIlfltG liquid itself while undesirable mixture of the acid and liquid under starting conditions is minimized or prevented by the use of any suitable trap and seal of mercury, etc., in connection with this discharge operation of the siphon. The discharge end or portion 27 of the siphon may in this case be formed or lined with vitreous material and may be connected by a suitable coupling 23 of any description to the upper portion of the siphon 14. This lower portion of the siphon preferably within the carbonate liquid 22 of I the mixing tank is formed with a suitable 'lthis tubular member so'as to form a chamber or pocket adapted to contain enough mercury or other suitable liquid 25 to exert the desired action on starting the siphon by the suction througlrthe suction connection 11 which may in this instance be provided with an automatic cut-off or float valve 13 above and outside of the removable acid chamber 10. Under these conditions the suction draws the acid 16 into the admission end 17 of the siphon so that it rises and fills the upper portion thereof, the mercury forming the seal being simultaneously sucked up a few inches beyond its normal position in the trap in the discharge leg of the siphon so that the gravity head thus caused by the mercury is sufficient to equal the suction required to draw the acid through the upper part of the siphon and enable it to start down the discharge leg in which it attains suflicient velocity to push out the mercury seal, which may, however, together with any slight air cushion that may be above the mercury serve to prevent undesirable contact of the acid and carbonate liquor within the siphon or prevent proper starting thereof.
This invention has been described in connection with a number of illustrative embodiments, forms, elements, materials, parts and arrangements, to the details of which disclosure the invention is not of course to be limited, since what is claimed as new and what is desired to be secured by Letters Patent is'set forth in the appended claims.
No broader claims are made herein to the automatic fluid or other siphon actuating connection with the distributing system, since that was previously invented in connection with generally similar chemical mixing devices by John R. Hamilton and generally described in his Patent No. 1,242,102, dated Oct. 2, 1917, relating to chemical fire extinguishing apparatus.
1. In chemical fire extinguishing apparatus, a dry pipe distributing system comprising automatic sprinkler heads and hose connection distributing devices, a chemical pressure liquid supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid casing communicating with said tank and containing an acid chamber, a siphon communicating with said acid chamber and having its discharge end communicating with said tank, a suction connection having an automatic float cut-ofl valve therein connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions, and means for preventing the undesirable contact-of the acid and carbonate material in the siphon on starting the same comprising a priming distributing cup mounted on the discharge end of said siphon and containing acid into which the discharge end of said siphon enters.
2. In chemical fire extinguishing apparatus, a distributing system comprising automatic distributing devices, a chemical pressure liquid supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid casing communicating with said tank and containing an acid chamber, a siphon communicating with said acid-chamher and having its discharge end communieating with said tank, a suction connection connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions and means for preventing the undesirable contact of the acid and carbonate material in the siphon on starting the same comprising a priming distributing cup mounted on the discharge end of said siphon and containing acid into which the discharge end of said siphon enters.
3. In chemical fire extinguishing apparatus, a distributing system comprising distributing devices, a chemical pressure liquid 7 supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid chamber, a siphon communicating with said acid chamber and having its discharge end communicating with said tank, a suction connection, connected to said siphon to start the same, and means for preventing the undesirable contact of the acid and carbonate material in the siphon on starting the same comprising a priming cup mounted on the discharge end of said siphon and containing liquid into which the discharge end of said siphon enters.
4. In chemical fire extinguishing apparatus, a distributing system comprising distributing devices, a chemical pressure liquid supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid chamber communicating with said tank and containing acid, a siphon communicating with said acid chamber and having its dis charge end communicating with said tank, a suction connection having an automatic cut off valve therein connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions and means for preventing the undesirable contact of the acid and corbonate material in the siphon on starting the same comprising a priming container mounted on the discharge end of said siphon and containing liquid neutral to said acid into which the discharge end of said siphon enters.
In chemical fire extinguishing apparatus, a chemical pressureliquid supply tank charged with extinguishing liquid containing carbonate material and chemical mixing devices comprising an acid chamber communicating with said tank and containing acid, a siphon communicating with said acid chamber and having its' discharge end co1nmunicating with said tank, a suction connection connected to said siphon to start the same, and means for preventing the unde sirable contact of the acid and carbonate material in the siphon on starting the same which the discharge end of said siphon enters.
7. In chemical fire extinguishing appara tus, a distributing system, a chemical pressure liquid supply tank charged with can tinguishing-liquid containing crabonate material and chemical mixing devices comprising an acid chamber communicating with said tank, a siphon communicating with said acid chamber and having its discharge end immersed in liquid, a suction connection having an automatic cut-off valve therein connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions.
8. In chemical fire extinguishing appara tus, a chemical pressure tank charged with liquid containing carbonate material and chemical mixing devices comprising an acid chamber communicating with said tank, a siphon communicating with said acid chamber and having its discharge end extending below the normal level of the liquid in said tank, a suction connection connected to said siphon to start the same, and means for preventing the undesirable contact of the acid and carbonate material in the siphon on starting the same.
9. In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon and communicating means comprising a suction connection with said distributing system to automatically start said siphon on the emergency condition of said system and eiiect the mixture of pressure producing chemicals.
10. In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, cooperating chemical mixing devices including a siphon and means connected to said siphon between its ends to automatically start said siphon on the emergency operation of said system and efiectthe mixture of the pressure producing chemicals.
11. In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon normally sealed With liquid adjacent both its ends and means connected to said siphon between its ends and comprising a suction connection with said distributing system to automatically start said siphon on the emergency condition of said system and effect the mixture of pressure producing chemicals.
12. In chemical fire extinguishing appa ratus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon normally sealed with liquid adjacent both its ends and means connected to said siphon between its ends and comprising a suction connection to start said siphon and efiect the mixture of pressure producing chemicals.
13. In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon normally sealed adjacent both its ends and means connected to said siphon between its ends and comprising a suction connection with said distributing system to automatically start said siphon on the emergency condition of said system and effect the mixture of pressure producing chemicals.
14. In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising an acid container and communicating siphon and means cooperating with said siphon and comprising a fluid suction connection between said siphon and said distributing system to automatically start said siphon on the emergency condition of said system and effect the mixture of pressure producing chemicals.
15. In chemical fire extinguishing apparatus, a distributing system, a chemical pressure liquid supply tank charged with extinguishing liquid containing carbonate material andchemical mixing devices comprising an acid chamber communicating with said tank, a siphon communicating with said acid chamber and having its discharge end immersed in liquid, a suction connection having an automatic cut-off device therein connected to said siphon to start the same and connected to said distributing system to be actuated under emergency conditions:
16. In chemical fireextinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices c0- operating with said tank and comprising a siphon normally sealed with liquid adjacent both its ends, means connected to said siphon between its ends and comprising a suctionconnection to start said siphon and effect the mixture of pressure producing chemicals, anda cut oil device in said suction connection to prevent undesirable flow of liquid.
17. In chemical fire extinguishing apparatus, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon normally sealed adjacent both its ends and means connected to said siphon between its ends and comprising a suction connection to start said siphon and effect the mixture of pressure producing chemicals.
18. In chemical fire extinguishing apparatus, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon having its discharge end normally sealed with liquid, andmeans connected to said siphon between its ends and comprising a suction connection to start said siphon and eflect the mixture of pressure producing chemicals.
19. In chemical fireextinguishing apparatus, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon having its discharge endnormally sealed, and means connected to said siphon between its ends and comprising a suction connection to start said siphon and effect the mixture of pressure producing chemicals.
20. In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon normally having its discharge end sealed with liquid to prevent undesirable entrance of fluid into such discharge end and means connected to said siphon between its ends and comprising a suction connection with said distributing system to automatically start said siphon and effect the mixture of pressure producing chemicals on the emergency condition of said system.
21. In chemical fire extinguishing apparatus, a distributing system, a chemical pressure tank, chemical mixing devices cooperating with said tank and comprising a siphon having its discharge end normally sealed to prevent undesirable entrance of fluid into such discharge end and means connected to said siphon between its ends and comprising a suction connection with said distributing system to automatically start said siphon and effect the mixture of pressure producing chemicals on the emergency condition of said system.
22. A fire extinguishing apparatus having a tank for containing a solution of fire extinguishing element, an acid for reacting with said fire extinguishing element to form a gas to expel said fire extinguishing element, a receptacle for containing said acid, a siphon tube for conveying said acid to said fire extinguishing element when a fire occurs, and means for initiating siphon action by said siphon tube for conveying acid to said fire extinguishing element, said initiating means comprising a discharge portion, a pipe connection connecting said discharge portion with said siphon tube,there normally being an air space in said siphon tube to normally maintain the same inoperative, the discharge portion being normally closed, and means for maintaining the pressure in said pipe connection when said discharge portion is closed, the opening ofthesaid dischargeporclosed, the opening of the said discharge portion operating to drop the pressure in said pipe connection thereby to draw up acid a distance through said siphon tube to initiate the siphon action.
23. A fire extinguishing apparatus having a tank for containing a solution of fire extinguishing element, an acid for reacting with said fire extinguishing element to form a gas to expel said fire extinguishing element, a receptacle for containing said acid, a siphon tube for conveying said acid to said fire extinguishing element, a normally closed discharge portion, a pipe connection connecting said discharge portion with said tank, means for supplying pressure to said pipe connection, a second pipe connection connecting said first pipe connection with said siphon tube, there being a valve chamber in said second pipe connection, an inclination in said second pipe connection, the connection of said second pipe connection with said first pipe connection being at a higher level than the level of the connection of said second pipe connection with the siphon tube, and a float valve in said valve chamber adapted to rise and shut 03 communication through said second pipe connection as soon as the same is filled with the acid carried thereto by the siphon action, there normally being an air space in said siphon tube to normally maintain the same inoperative, the opening of said discharge portion operating to drop the pressure in said pipe connection thereby to force the acid through said siphon tube to initiate the siphon action.
24. A fire extinguishing apparatus having a tank for containing a solution of fire extinguishing element, an acid for reacting with said fire extinguishing element to form a gas to expel said fire extinguishing element, a receptacle for containing said acid, a siphon tube for conveying said acid to said fire extinguishing element, a sprinkler arm, fusible heads on said sprinkler arm, a hose connected to said sprinkler arm, control means for controlling the discharge through said hose, a pipe connection connecting said sprinkler arm with said tank, means for supplying pressure to said pipe connection, a second pipe connection connecting the first pipe connection with said siphon tube, there normally being an air space in said siphon tube to normally maintain the same inoperative, the fusible heads and controlling means being normally closed, the opening either of said .fusible heads or of said controlling means operating to relieve the pressure in said first pipe connection and thereby to force the acid through said siphon tube to initiate the siphon action.
EVERETT L. THOMPSON, J R. Witnesses: v
HARRY L. DUNCAN, Jnssm B. KAY.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner t Patents, Washington, D. G."
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