Abstract: A fire protection sprinkler system for metal buildings has horizontally oriented sprinkler heads mounted on water supply lines extending along each side of rafters supporting the roof of a metal building so as to provide protection for bays between adjacent rafters having a width up to 25 feet or more. The sprinkler heads have a vertical part facing an outlet in a sprinkler body and a hood-shaped part supported from the vertical part and having downwardly inclined side walls and a downwardly inclined front wall. The deflector arrangement is supported from the sprinkler body by a pair of frame arms which converge at a boss on which the vertical part is mounted and another deflector part having rearwardly inclined arms extending horizontally, downwardly at an angle and substantially vertically, is supported between the boss and the vertical part of the deflector.

Abstract: A system for suppressing fire in an enclosed space, e.g. an aircraft cabin or freight compartment, includes nitrogen tanks and/or generators to rapidly supply a limited quantity of nitrogen with-a high flow rate, and a membrane system to supply an essentially unlimited quantity of nitrogen at a lower supply rate for a long duration. The membrane system includes a selectively permeable membrane that separates nitrogen gas from ambient environmental air that is supplied into the membrane system. Once a fire is detected, nitrogen is supplied from the nitrogen gas tanks and/or generators at a high rate to rapidly increase the nitrogen concentration and establish a reduced oxygen concentration (e.g. 12 vol. %) in the enclosed space. Then, nitrogen is supplied from the membrane system at a reduced rate for a long duration to maintain the reduced oxygen concentration in the enclosed space until the fire is extinguished by oxygen starvation.

Abstract: An apparatus and method for clean, efficient removal of water and odor from a sprinkler systems including a vessel, a pump which creates a reduced pressure in the vessel, and a connector for attaching the device to the sprinkler system to remove trapped water. The vacuum pump is powered by a power source, and the reduced pressure created by vacuum pump is controlled by a regulator such that the vacuum pressure is maintained and does not cause damage to the gaskets in the sprinkler system.

Abstract: A wet-pipe sprinkler system, method of supplying water to the system, and method of dealing with a leakage of the system are provided, wherein the wet-pipe sprinkler system includes a sprinkler head; a plurality of interconnected pipes for supplying water to the sprinkler head; at least one water supply connected to one end of the pipes; an electric main valve for controlling inflow of water to the pipes; an electric drain valve to drain water from the pipes; a first electrical control circuit in a central control studio which outputs a drain valve opening signal to the electric drain valve and a main valve closing signal to the electric main valve when a leakage is detected, thereby blocking the water from entering the pipes and draining the water from the pipes. Accordingly, a leak may be dealt with promptly, thereby minimizing damage caused by the leakage.

Abstract: Mounting assembly for mounting a spray head (4) to an opening of an over 10-mm thick wall. The mounting assembly comprises a holder (1) for receiving the spray head (4) and a clamping piece (6) which comprises threads (7) for engaging threads (2) in the holder (1) and it can be moved axially in relation to the holder (1) and an expansion means (11) supported by the holder, the clamping piece (6) being arranged so that movement thereof causes movement of the expansion means (11) from its zero position, in which the diameter of the expansion means has a first value, to a fastening position, in which the diameter of the expansion means has increased to a second value for pressing the expansion means against a wall of the opening. The invention also relates to mounting assembly for mounting a spray head to an at most 30-mm thick wall.

Abstract: An integrated water distribution network supplies the requirements of both domestic and fire protection water fixtures in a dwelling structure. The network includes a plurality of interconnected conduits for supplying water under a variety of water use conditions, including hot water use, cold water-use and fire sprinkler activation. Individual water fixtures are connected to the distribution system through flexible lines. During use of a water fixture, water flow through at least a portion of the system is established. The distribution system can thus characterized as a “nonstagnant” water network for supplying both domestic and fire protection requirements of a structure.

Abstract: A central hub includes a plate and a sleeve attached to the plate and adapted to receive a sprinkler head. The sleeve may be a telescoping sleeve. By providing a central hub with the plate and sleeve, the central hub provides increased stability and versatility to the sprinkler head. The plate provides additional stability and support to the sleeve, and thus the sprinkler head, rendering the combination better able to operate effectively when high fluid pressures are utilized. The central hub is generally attached to a support structure by some mechanism, such as a leg. The addition of the plate adds versatility by increasing the number and variety of legs that can be used to attach the central hub to the support structure.

Abstract: A sprinkler system for preventing brush and forest fires from engulfing a home. The sprinkler system includes a piping assembly being adapted to extend along a peak of a roof of a building and along an underside of eaves of the building and along a fence line; and also includes a shield assembly including an elongate shield member being adapted to extend along the peak of the roof of the building and also including shield support members being adapted to fasten to the roof of the building for supporting the elongate shield member; and further includes a water supply assembly being connected to the piping assembly for supply water to the piping assembly; and also includes a pump/control assembly being connected to the water supply assembly and to the piping assembly for delivering water to the piping assembly.

Abstract: A spray dispensing head for a squeeze dispenser is disclosed. The dispensing head includes passageways for directing streams of air and liquid to a mixing chamber wherein the liquid is broken up into droplets and emitted as a fine spray through an orifice. The device includes a valve which is operated by a push-pull motion. When the valve is closed, the liquid is sealed off from the atmosphere, thus preventing drying or contamination of the liquid product.

Abstract: An automatic flush sprinkler side wall sprinkler assembly includes a sprinkler body, a deflector, a closure member, and a trigger assembly. The deflector is movably mounted to the sprinkler body between a retracted position wherein at least a portion of the deflector is recessed within a cavity of the sprinkler head body and an extended position wherein the deflector is spaced from an outlet opening of the sprinkler head body for dispersing pressurized fluid which flows from the outlet opening. The deflector includes at least two horizontal deflecting surfaces which are positioned spaced from and generally parallel to a direction of flow of the fluid from the outlet opening for directing the flow of fluid outwardly and downwardly from the sprinkler assembly and, further, are provided on a common side and spaced from a central axis of the deflector. The closure member is positioned between the deflector and the outlet opening for sealing the outlet opening.

Abstract: An end fitting for a sprinkler system where the fitting defines an internal chamber and the chamber is adapted to have at least one fluid exit out of the chamber. The fluid exit is integral to the fitting. There is an internal dome at an end of the chamber, and the fluid exit is adjacent to the dome, or touching the dome, or within the dome. A sprinkler system having a supply pipe, an end fitting for the pipe, a sprinkler head in fluid communication with the end fitting, and a fitting connection adapted for attaching the fitting to an end of the supply pipe, the fitting defining an internal chamber, the chamber adapted to have a plurality of fluid exits therefrom, each fluid exit integral to the fitting. The fitting also has an internal dome at another end of the chamber opposite the supply pipe.

Abstract: An inerting method for reducing the risk of and for extinguishing fires in enclosed space as well as apparatus for carrying out the method are provided. To ensure an effective extinction of a fire while keeping the storage capacity for inert gas cylinders at a minimum, the method provides that the oxygen content in the enclosed space is reduced to a set base inerting level and, in the event of a fire, is quickly further reduced to a complete inerting level. For carrying out the method, the apparatus includes an oxygen measuring device in the enclosed space, with a first system for producing the oxygen-expulsion gas or for extracting oxygen from the enclosed space, with a second system for rapidly feeding an oxygen-expulsion gas into the space being monitored, and with a fire detection device for detecting a fire characteristic in the enclosed space.

Abstract: A corrosion-resistant and fire-resistant pipe system suitable for sprinkler systems and the like in the offshore industry and also on military and civilian seagoing vessels, and generally as sprinkler systems in official buildings and in industrial buildings. The pipe system is characterized in that the pipe system includes rigid and cold-formable pipe sections (10) that have one or more tubular rubber layers (11, 13, 15) and reinforcement layers (12, 14) that surround or embrace one or more of the tubular rubber layers (11, 13, 15). The reinforcement layers are comprised of wires or ribbons that have been wound, braided, knitted or formed in some other way so as to cross each other, wherein each of the wires or ribbons defines with the longitudinal axis of the pipe section a winding or spiraling angle that imparts the greatest possible strength to the reinforced, tubular rubber layers (11, 13, 15).

Abstract: A telescopic high pressure sprinkler system is provided with a plurality of gaskets forming sliding seals between the piston and the outer conduit. Thus, the volume between the piston and the outer conduit forms a fluid chamber that is compressed as the piston is deployed so as to dampen the acceleration of sprinkler deployment. Furthermore, adjustable bleeder holes are provided to regulate the fluid chamber's compression while the gaskets provide a cushion when the piston comes to a stop. These bleeder holes also allow refilling of the piston fluid chamber.

Abstract: A deluge fire sprinkler system for suppressing fires occurring in an air environment, the air having an atmospheric pressure, the deluge fire sprinkler system including a network of water pipes having an interior volume, a water input port opening the interior space, and a plurality of water outlet ports further opening the interior space, the network of water pipes having an internal fluid at a pressure reduced below that of the outside atmosphere; a plurality of blow off caps for resisting aspiration of air into the water outlet ports and for permitting emission of water flowing under pressure from the water outlet ports, the blow off caps covering the water outlet ports, the blow off caps being adapted to permit air to aspirate into the interior space of the water pipe network upon exposure of such network to heat; a valve actuatable by a pressure rise, such valve operatively connected to the water input port; a pump for lowering the internal fluid pressure of the network of water pipes below that of the a

Abstract: A pest extermination system for installation in a structure for distributing pesticide and insecticide. The pest extermination system includes a piping system. The piping system has a plurality of nozzles positioned therealong that are adapted for spraying a pesticide. A pumping device is in fluid communication with the piping system and is adapted for pumping pesticide into the piping system.

Abstract: A fire protection system for a building having a periphery with a roof situated thereon. The roof is supported by rafters which are angled downwardly from a ridge to at least one eave thereof. The eave extends beyond the periphery of the building a predetermined distance. Included as components of the invention are a water supply for supplying water and a plurality of supply pipes connected at a first end thereof to the water supply and extending to the building such that the water may flow from the reservoir tank to the building. Also included is a plurality of above ground distribution pipes. The above ground distribution pipes include at least one vertical pipe situated vertically on the periphery of the building with a lower end thereof connected to a second end of the underground pipe and a plurality of horizontal pipes connected to an upper end of the vertical pipe and extending along the length of the eave on an underside thereof.

Abstract: A fire suppression method and apparatus has a sprinkler head support bracket which is installable immediately above a ceiling tile. The support bracket is configured with a plurality of openings such that multiple locations for the sprinkler head may be used and the exact "center of tile" installation of the sprinkler head can be accomplished with a wide variety of suspended ceiling assemblies and sprinkler heads. The support bracket rests on grid support members and arches over the ceiling tile. Hold down clips are provided to maintain the bracket in position relative to the grid support members. A pipe clamp is provided which is insertable within the bracket to retain a drop nipple within it. The drop nipple is adjustable relative to the horizontal to move it upwardly or downwardly relative to the ceiling tile. In this fashion, the vertical location of the sprinkler head can be adjusted depending upon the elevation of the ceiling tiles used and the style of sprinkler head used.

Abstract: A vehicle wash boom apparatus includes a fixed journalling tube for journalling a boom-supporting tube for reciprocal and rotational movement about a vertical axis. The journalling tube carries a cam and the boom-supporting tube carries a cam follower. A pair of torsion springs at all times bias the cam follower in an upward direction against a cam surface of the cam which is inclined relative to the vertical axis. Thus, as the boom is rotated, the interaction between the cam and the cam follower effects a vertical movement of the boom-supporting member which allows the boom while being used to by-pass a like boom of an identical apparatus when in its home or parked position.

Abstract: A protection device designed to protect pendent-type sprinkler heads includes a shroud member that removably encloses a selected sprinkler head and a positioning member that selectively maintains the shroud member in a preferred orientation with respect to the sprinkler head. An included tearing member facilitates removal of the shroud member; the tearing member is a flexible, inelastic member that, when pulled correctly, will tear the shroud member along a predetermined path. The shroud member, itself, is characterized by lines of perforation that cooperate with the tearing member to ease shroud member removal.

Abstract: A system is provided for maintaining a sprinkler head in a position to allow continued operation during a fire in the event that the support structure for the sprinkler head fails or is otherwise removed. The support system includes a central hub adapted to receive a sprinkler head, a first leg attached to the central hub and having first and second ends. The support system also includes first and second ends having fastening devices adapted to attach the ends to the support structure. The fastening devices are configured to break away from the support structure in the event of support structure failure.

Abstract: A support system for positioning a sprinkler head relative to a support structure in a ceiling, floor, or wall includes a central hub adapted to receive the sprinkler head, a first leg attached to the central hub and having a first end configured to be attached to the support structure, a second leg attached to the central hub and having a second end configured to be attached to the support structure, the second leg being spaced-apart from and substantially parallel to the first leg. The support system combines increased flexibility in installation with increased support for the sprinkler head during operation.

Abstract: A horizontal sidewall sprinkler head includes a tubular body with an inlet end adapted to be connected to a source of fire extinguishing liquid, and an opposite, discharge end. The tubular body includes an internal passage extending axially therethrough. The tubular body has an axis extending centrally through the internal passage. A deflector is supported from the tubular body. The deflector includes a plurality of sets of mirror image side tines extending in a direction transverse to the axis of the tubular body. At least one set of side tines are rearwardly angled and diverge from the axis of the tubular body in a direction toward the discharge end of the tubular body. An auxiliary deflector is secured to the tubular body and includes a canopy portion. The canopy portion is located above the primary deflector and inclined downwardly with respect to the axis of the tubular body.

Abstract: A swimming pool screen enclosure-supported water misting and cooling apparatus, the screen enclosure including tensioned fabric screen panels held between spaced apart elongated upright and overhead rigid frame members. The apparatus includes a plurality of water misting nozzles each of which discharge water under pressure as a very fine mist. A flexible water tubing is operably connectable to each misting nozzle for delivering pressurized water to each misting nozzle, the water tubing being connectable to a pressurized water source. A plurality of retaining clips are each connectable to an overhead frame member to support the misting nozzles and water tubing overhead of the swimming pool and adjacent deck area within the screen enclosure whereby mist discharging from the misting nozzles is distributed downwardly to cool occupants within the screen enclosure without substantially wetting any of the screen enclosure contents.

Abstract: A fire suppression sprinkler system and method for installing a sprinkler system in new and existing buildings. The system includes a manifold that supplies fire-suppression fluid to a set of wall-mounted sprinkler heads via flexible sprinkler head conduits through an unobstructed path. The installation and retrofit methods include determining the location of the sprinkler head, installing the manifold, making sure that there is an unobstructed path between the manifold and the sprinkler head location, running the conduit through the path by snaking it where necessary through the wall to which the sprinkler head is mounted, connecting the conduit to the manifold and sprinkler head, and then mounting the sprinkler head.

Abstract: Spraying tubes (20 . . . ) through each of which a plurality of spraying holes are perforated along the longitudinal axis of each tube are placed in prescribed positions upper than feces boards (10 . . . ) of henhouses; and the spraying tubes (20 . . . ) are connected to agent-supplying means for supplying an agent such as a tank, a pump, etc. and airsupplying means for supplying compressed air such as a compressor, etc. The spraying holes make an angle not smaller than 5 degrees and not greater than 90 degrees as measured downward from the horizontal plane at the time of spraying an agent, in order to make it possible to spray the agent to feces boards (10 . . . ) and feces floor (12). The eggs of pests such as housefly and the like laid on the feces adhering to the feces boards and feces floor can efficiently and certainly be controlled.

Abstract: A home fire extinguishing system is provided including a sprinkler system having a plurality of sprinkler heads adapted to dispense water in the rooms of a home upon the actuation thereof. Also provided is a manual switch for allowing the selective actuation of the sprinkler system.

Abstract: A telescopic high pressure sprinkler system is provided with a plurality of gaskets forming sliding seals between the piston and the outer conduit. Thus, the volume between the piston and the outer conduit forms a fluid chamber that is compressed as the piston is deployed so as to dampen the acceleration of sprinkler deployment. Furthermore, bleeder holes are provided to regulate the fluid chamber's compression while the gaskets provide a cushion when the piston comes to a stop.

Abstract: Atmospheric growing conditions in high-rise animal rearing facilities are proved by spraying liquid alum periodically over the manure collection area. Improved high rise animal rearing facilities provided with a liquid alum treatment delivery system for misting or spraying the liquid alum over the manure collection area to strip ammonia gas from the air and to apply a chemical coating on a surface of the accumulated manure which reduces or prevents ammonia volatilization. The liquid chemical treatment comprises an aqueous alum solution containing 1 to about 50% by weight alum, applied at a rate of about 50-250 g of Al.sub.2 (SO.sub.4).sub.3. 14H.sub.2 O per kg of manure as it accumulates. The improved rearing facilities and methods control the atmospheric conditions in the animal rearing area at less than or equal to about 25 ppm ammonia throughout the growing cycle.

Abstract: A header fabricated of a lightweight non-metallic material includes a pair of opposed ears which are adapted for sliding mated engagement within a channel support. The header includes reinforced ribs which present relatively planar surfaces with spaced openings that accommodate a plurality of spray nozzles.

Abstract: A roof mounted fire protection system adapted for use in association with a house positioned upon a yard, the house having a pitched roof with an apex and a side wall, the apparatus comprising: a horizontal roof pipe and a vertical side pipe, the horizontal roof pipe being coupled along the apex of the roof, the vertical side pipe having an upper end and a lower end and affixed to the side wall of the house, the upper end of the vertical side pipe being coupled to the horizontal pipe; a plurality of upwardly directed sprinkler heads, each sprinkler head being formed in a generally conical configuration and coupled to the horizontal roof pipe; a pump including an intake port and an output port, the intake port being coupled to a water source, the output port being coupled to the lower end of the vertical pipe; and an activation device operatively coupled to the pump, the activation device enabling a user to activate the pump to supply water to the sprinkler heads when required.

Abstract: An assembly comprises:(a) a track positioned at least part way around the perimeter of the predetermined area and having first and second ends and first and second generally parallel opposed faces extending between said first and second ends, said first opposed face having a longitudinally extending opening;(b) a panel positioned at an intermediate point between said opposed faces and generally parallel with said opposed faces, said panel having first and second ends and extending part way between said first and second ends so as to define a first channel adjacent said first opposed face and a second channel adjacent said second opposed face;(c) a flexible carrier having first and second ends, said first end of said carrier being secured to said second opposed face of said track near said first end of said panel, said second end of said carrier being moveable within said track from a position adjacent said first end of said track to a position adjacent said second end of said track;(d) a manifold positioned a

Abstract: A sprinkler system, for cooperation with an array of ceiling tiles, essentially features a mount of tiles including at least one with a central opening, a web disposed above the mount of tiles and including a central hub and legs extending therefrom to the corners of a frame with a dimensional profile like that of the tiles, a number of ceiling wires supporting the frame in spaced relation to a ceiling, a sprinkler head supported within the central hub and extending through the central opening, and apparatus for connecting the sprinkler head to a source of fluid. Preferably, the apparatus includes a rigid stationary water grid and supply and a flexible hose connecting the sprinkler head to the water grid and supply. Preferably, the flexible hose is an annealed stainless steel braid hose having an open pitch.

Abstract: A boom system for dispensing fluids in which two or more boom arms are mounted for rotation on a fixed tubular member. Each boom arm is capable of unlimited angular rotation about the axis of the tubular member and first and second fluids are independently directed to the first and second boom arms, respectively, for discharge thereby.

Abstract: The pipe connector which may be varied in length and a method for installing the connector is disclosed. Also disclosed is a tool for aiding in the fabrication of a portion of the connector. The connector consists of two telescoping pipes which are joined by the action of a wire spring positioned in recesses in the two pipes. The recesses are designed to allow only one-way movement between the telescoping pipes until such time as a release groove is reached. The release groove is positioned on one of the pipes beyond the normal operating length of the connector. When the wire is positioned in the groove, the pipes may be separated. The tool described allows for on site fabrication of the notch for one of the pipes.

Abstract: A system and method for constructing a car wash which involves prefabricating a raceway equipped with lines and hoses for delivering car wash supplies to car washing equipment. This raceway is folded and transported to the car wash location where it is unfolded and connected to car wash equipment and sources for car wash supplies with a minimum of time, effort and trained personnel.

Abstract: A system for mounting a branch pipeline and sprinkler head assembly of a fire extinguisher sprinkler system to structural elements above the ceiling of a building in a manner which allows the sprinkler head to be vertically adjusted relative to the plane of the ceiling. The mounting system includes an anchor bracket which attaches the horizontal pipe of the branch pipeline to a structural element and a clamp which is attached to a structural element and is selectively operable for gripping and releasing the vertical pipe of the branch pipeline to allow vertical adjustment of the sprinkler head and hold it immobile subsequent to the vertical adjustment. The clamp is of special configuration which allows it to be operated in response to an operating force which is applied thereto in a direction parallel to the vertical pipe through a sprinkler head clearance hole formed in the ceiling.

Abstract: Disclosed is an integral fire protection and ceiling structure for use in a building of the kind wherein false ceilings are employed. The fire protection system comprises a rectangular gridwork of pipe sections with four-way cast pipe fittings to which the pipe sections are joined. Each fitting has a downwardly-directed outlet in which a sprinkler head is mounted. The false ceiling structure comprises intersecting support runners forming a gridwork of rectangular frames where the dimensions of the gridwork of the pipe sections are even multiples of the dimensions of the rectangular frames with the intersecting support runners being beneath and in vertical alignment with intersecting pipe sections of the pipe section gridwork. The sprinkler heads extends through the intersections of the support runners. Suspension means suspend the support runners from the grid of conduits.

Abstract: In a heating and cooling system for a building, water from either a swimming pool or a well flows through a heat pump unit within the building and recirculates to simultaneously and automatically control ambient air temperature within the building and temperature of the pool water. Hot gases produced by the heat pump are used by an energy conservation unit to heat water for domestic use.

Abstract: A spray nozzle, which is attached to a conduit or header carrying a fluid under pressure, the purpose of which is to generate a circular umbrella type liquid spray. Spray nozzle includes a cylindrical member and a baffle therein. The spray nozzle receives liquid from the header and conducts it to its concavely curved dispersing member from where it is discharged in a circular spray pattern to a bank of tubes or cooling tower fill below.

Abstract: A flexible rigid conduit system particularly suitable for fire protection sprinkler installations usable with movable storage racks wherein a plurality of rigid conduits are interconnected by self-aligning rotary joints permitting pressurized water to be supplied to the storage rack regardless of its location. The conduit system is supported remotely of its fixed portions by a track and carriage arrangement providing support for the conduits and permitting unhindered movement thereof.

Abstract: A self-return mechanism for a car wash hose boom swivel assembly includes a cam and a cam follower assembly which counteracts a force caused by the drooping of a flexible hose that extends from an end of a hose boom arm to a spray wand positioned in a wand holder that is attached to a side wall of a car wash bay near an open end thereof. The self-return mechanism returns the hose boom arm to a position such that the drooping portion of the hose is held out of the path of a vehicle as it moves into the bay. If the hose boom arm is within a predetermined 90.degree. arc, the cam follower mechanism produces a self-returning force on the hose boom swivel assembly, but if the hose boom arm is outside of the 90.degree. arc, the swivel assembly rotates without being subjected to any such self-returning force.

Abstract: A fire prevention and cooling system for wetting a structure, including a main supply tube and a main dispensing tube. The dispensing tube is U-shaped and is connected to the supply tube via a series of feed lines. The system includes elements to acquire water from alternative sources such as a pool or a tub and secondary tubes for wetting side walls.

Abstract: An adjustable drop nipple for sprinkler heads is disclosed which comprises a stationarily mounted collar with internal threads that receives an externally threaded nipple, and whereupon rotating the nipple a portion of its length is caused to retract into the collar or extend from it, depending on the direction of rotation, in order to precisely regulate vertical elevation of a sprinkler head attached to the lower end of the nipple. An effective seal against leakage of water is achieved by use of one or more O-rings on the nipple which abut a smooth bore section inside the collar.

Abstract: The invention herein relates to improvement in a fire extinguishing system which is arranged and constructed to cover a room area with a mist spray. The improvement herein consists in providing each room, as in a house, with a unitary ceiling perimeter molding, the molding being formed to have a passage therethrough, the room facing portion of said molding having small apertures therethrough to pass a mist spray of water into the room, a pressurized water supply running to said passage, a valve controlling said water supply running to said passage, and sensors opening said valve at a temperature indicating the presence of a fire and closing said valve at a temperature indicating the fire has been put out.

Abstract: An adjustable drop nipple is disclosed for connecting a pendant sprinkler to a sprinkler system. The nipple includes outer and inner telescoped pipes with a gripping means therebetween which permits an adjustment of the telescoped relation of the pipes for a desired position of the pendant sprinkler below a drop ceiling.

Abstract: A metal building with combined temperature control and firefighting system, wherein the building includes a metal frame structure having hollow members defining water flow passages for circulation of water throughout the building structure to heat or cool the building, depending upon whether hot or cold water is circulated, and having heat responsive devices and water distribution devices connected therewith, whereby in the event of a fire, water is caused to flow over portions of the building surface and through the frame members, to prevent damage or destruction thereto due to heat from the fire.

Abstract: This disclosure teaches a structural, fire extinguishing and ventilating system for use in building construction. Parallel joists have tubular lower chords through which fire extinguishing water is circulated and from which a perforated ceiling depends to form an upper enclosure for a room. Ventilating air ducts are positioned between the joists so that the ventilating air passes over the tubular lower chords in noncontact heat exchange relationship with the fire extinguisher water and the air then passes downward through the perforated ceiling to the room.

Abstract: An adjustable drop nipple is disclosed for installing fire protection sprinkler systems which comprise sprinkler head assemblies of the dry, pendant type. The downwardly extending length of a drop nipple having a sprinkler head thereon is adjusted by sliding the nipple axially in a collet having an externally tapered section that engages an internally tapered section of a stationary collet holder. When a selected drop length has been established, the collet is then compressed axially against the collet holder with tightening means whereby the nipple is firmly gripped by the collet so that axial sliding thereof is prevented, thereby maintaining the nipple at the selected drop length.

Abstract: An adjustable stem drop apparatus and method for a fire extinguishing sprinkler mounted on a pipe located above the ceiling of a building and arranged in such a manner that the position of the sprinkler can be adjusted from below the ceiling after the ceiling has been permanently installed.