Abstract: A tubular attachment for portable air blowers to allow the cleaning of rain gutters and the like, wherein flowing air is conducted from the blower upwardly to approximately the height of the gutter, turned horizontally to pass over the gutter lip and then turned downwardly into the gutter trough to blow out leaves, twigs and other debris. The blown air is directed into the gutter through an adjustable elbow arrangement in which a terminal section of the elbow is rotatable with respect to an inner section of the elbow to allow the angle of air flow to be varied, so that cleaning may be accomplished from left-to-right or right-to-left along the gutter.

Abstract: An explosion treatment apparatus useful for confined shock exposure of materials as for removal of sand cores from finished castings and, in particular, cores in permanent mold castings in which a horizontally axised index device successively presents plural and substantially similar cavities to a position at which sealing, evacuating, fueling and ignition occur. This results in an explosion which occurs upon closure of each chamber. After the confined explosion, the cavity is opened and all cavities are indexed so that the fired cavity can be unloaded, the previously unloaded cavity can be dumped, the next adjacent cavity can be reloaded, and the reloaded cavity is presented to closure.

Abstract: A device for cleaning leaves and other debris from eave troughs and similar gutters by use of water pressure. The device comprises a carrier adapted for engagement with the forward lip of an eave trough. The carrier supports a high-pressure water nozzle which is adapted to be connected to a source of water under pressure. The carrier is propelled manually by means of an elongated handle along the length of the eave trough as the water stream flushes the debris from the trough.

Abstract: A gas supply system including purge means. A supply conduit having an inlet and an outlet and a downstream direction of flow has within it a purge conduit with an inlet and a discharge port. The discharge port is directed upstream in the supply conduit and discharges adjacent to its inlet, whereby to purge that region of the supply conduit and to sweep gases from the entire supply conduit. The system is also provided with a selector valve able selectively to deliver gas to a delivery conduit or to a vent conduit or to shut them both off.

Abstract: An extensible sanitary hose used for the transfer of sewage from a holding tank to a sanitary facility may be cleaned and stored by the use of a combination holding and cleaning device which is fabricated from an elongated hollow cylinder having a number of openings extending laterally therethrough distributed along its length, such cylinder being open at one end and closed at the other end. A circular retaining member is mounted to the cylinder adjacent its closed end for supporting the bottom end of the hose for restraining the hose in place thereon, and a locking ring is removably mounted to the cylinder adjacent its open end.

Abstract: An air controlled overhead gutter cleaner is disclosed having a head portion and a hollow supporting arm portion. The head is adapted for movement along the gutter under control of a person walking along the ground. The head is shaped such that as air, which is forced through the hollow support arm, exits from the head, leaves and other debris in the gutter are blown out of the gutter. A rear baffle is provided to deflect the expelled material forward and off the roof.

Abstract: A device for unclogging blocked pipes, tubes, drains and other conduits employing a source of compressed gas such as a CO.sub.2 cartridge or air compressor and a secondary source of compressed gas and/or liquid. A compressed gas storage chamber receives and holds the compressed gas until a desired predetermined pressure is reached at which time a valve is opened allowing the gas under pressure to flow to the conduit to be unclogged. Simultaneously, and if required, a secondary source of compressed gas and/or liquid can be led into the conduit to be unclogged, downstream of the storage chamber release valve. An automatic safety gas relief valve is also disposed downstream of the storage chamber release valve for safety.

Abstract: Apparatus for clearing drain lines includes an appliance which may be held in sealed engagement over a drain opening and actuated with a sudden burst of gas pressure. The appliance includes a pressure chamber which can discharge into a sealing ring and which for each operation is initially closed off from the sealing ring by a rupturable metal diaphragm. While the appliance is held by hand with its pressure ring firmly sealed around the drain opening, gas pressure is increased in the pressure chamber until the diaphragm suddenly ruptures to release the compressed gas into the drain with a sudden hammer-like action. The gas pressure may be supplied from a pressure can or by pump. This metal diaphragm may be a conventional jar-cap as used for home canning, except accurately scored to rupture at a predetermined pressure.

Abstract: Apparatus for storing a recreational vehicle sewer hose assembly comprising spaced cone members affixed to a central apertured mandrel with one cone element being slidably received respective to the mandrel and to the remaining fixed cone element. The mandrel is apertured and has an inlet end which can be connected to a water supply so that the slidable cone can be removed from the mandrel, a sewer hose assembly telescopingly received in a collapsed manner about the mandrel, and the slidable cone member replaced upon the mandrel with the collapsed sewer hose being captured so that it is in stored relationship therebetween. During the above manipulation, water flows into the mandrel and through the apertures to wash any accumulation of sewage from the interior of the hose assembly. This expedient enables the entire apparatus to be subsequently drained so that the entire combination can be conveniently handled and stored in a sanitary and compact manner.

Abstract: A tool for holding a torch tip and a blank cartridge respective to one another so that the blank cartridge can be detonated and the high-velocity gases issuing therefrom used to clean out the flow passageways of the torch tip.