Abstract: This invention relates to a knockdown cabinet and particularly to a one-piece molded plastic door frame and front wall having unique means for hinging the doors to the cabinet frame opening.

Abstract: The following specification discloses a chesterfield that is convertible into a double bed without a requirement for changing any part of the chesterfield frame and which has the normal seat depth for sitting comfort. The bed is stored beneath the seat cushions and is foldable inwardly lengthwise of the chesterfield with part of the folded bed storable beneath the back rail or deck of the seat. The bed is folded lengthwise and consists of a pair of clam-shell appearing tube members pivotably attached to a pair of channel members with link fabric for holding a mattress stretched between the tubes and a mid-cross tube. The channels and tubes form a `U` shape when folded down into the bottom of the chesterfield with the opening of the `U` facing the back of the chesterfield. The bed frame is held to the lower side frames of the chesterfield by a bearing bracket through a chain of links connected together in pivotable foldable relation.

Abstract: A means of stabilizing a surface area of soil comprising a plurality of rings formed of rigid material which is resistant to wear and corrosion, soil rings being fastened together in spaced relationship to each other, said means being intended to be laid over the surface area.

Abstract: A method of preventing water from escaping through cracks in a waterway or reservoir includes the steps of forming a membrane of a laminate of butyl sheet with a layer of synthetic fibres bonded thereto, lining the waterway or reservoir with sheets of this membrane, sealing the joins between adjacent sheets and spraying high density concrete onto the exposed fibre layer.

Abstract: Gas flow from a coal seam to a mine face in the seam is blocked by drilling a hole from the face into the seam in a direction generally parallel to the direction of the flow of the gas to be blocked; forming a notch at the interior end of the hole; injecting a fluid into the hole and notch under a pressure sufficient to hydraulically fracture the seam along a plane extending substantially perpendicular to the hole and to the direction of gas flow; and filling such fracture with a barrier-forming fluid. The hole is then plugged to prevent retrograde flow of the fluid to the mine face.

Abstract: A cash drawer movably mounted in a housing between open and closed positions and yieldingly urged toward its open position by resilient rods adjustably mounted in the housing. A latch hook releasably holds the drawer in its closed position, and a power operated device is used alternatively with a manually operated mechanism to move the latch hook in a direction to release the drawer for opening movements. The manually operated mechanism includes a latch hook engaging portion for positively locking the latch hook against drawer releasing movement, when desired. Drawer supporting slide rails are tilted to a degree which provides for substantially constant velocity of opening movement of the drawer, and a yielding friction element engages the drawer to stop opening movement of the drawer at a given position of said opening movement.

Abstract: A method is provided for reducing the water permeability of a porous subterranean formation by injecting a dispersion of polyamide and a water soluble polymer through a well bore into the formation. Preferred materials are polyamides and poly-acrylamides.

Abstract: The invention relates to the immersion at a great depth of an offshore weight-structure comprising a concrete base having two multicellular compartments, the one being central and self-resistant and the other being peripheral and subjected to compensating pressures, at least one multitubular pylon fixed to the said base and having a working area installed above it out of the water, and an auxiliary float co-operating with each pylon. The invention is characterized in that ballasting is effected by partial filling of the said self-resistant central compartment to enable the beginning of the immersion to be effected and that the actual immersion is then effected by the action of the said auxiliary float having an elongated cylindrical shape and being partly filled and whose relative position in relation to the said base is varied by mechanical guiding means.

Abstract: A method of backfilling in underground mine operations by a mill tailings slurry which is dewatered to provide a material with a controlled water content to permit the dewatered material to be used as a backfill without requiring any substantial dewatering after placement and which material can, when desired, be mixed with selected quantities of cement to provide a mortar for backfilling or surface covering.

Abstract: A flame-resistant cushion includes a frame, an inner core of foamed polyurethane material carried by the frame, and an exterior layer of foamed neoprene bonded to and completely covering the entire surface area of the top, front, back and both sides of the core material. A metal pan is also secured to the seat frame to enclose the bottom of the cushion. In making the cushion, a latex water emulsion of neoprene is foamed and deposited in a thin layer on a carrier sheet. This composite lines a mold with the foam side engaging the mold; and unreacted polyurethane foam is poured into the mold. The adhesive properties of the polyurethane cause it to bond to the carrier sheet as it gels forming an integral cushion material with a covering of neoprene for greater fire resistance.

Abstract: A ceiling mounted storage box which is reciprocable on vertical guide rails mounted on opposed walls of an enclosure. The box is raised and lowered by a rope threaded through an eyebolt attached to the ceiling. The eyebolt projects into the interior of the box. The end of the rope threaded through the eyebolt is fixed to the interior floor of the box, so by lowering or raising the rope through the eyebolt, the box is lowered or raised on the vertical guide rails.

Abstract: An improvement in a telephone number register having a plurality of double levers in a drawer for positioning selected register cards, each of said levers including locking means for holding a lever in its selected position and automatically releasing the locking means upon the return of the drawer to the register casing. The locking means preferably includes a pivotable flap for each lever for holding down a depressed front end part of an associated lever and the release is preferably provided by an abutment connected to the casing for pivoting the flap from its locking position.

Abstract: A clothes hamper has a central horizontal partition-shelf defining an upper, open-topped compartment and a lower, open-fronted compartment, a plurality of upper, open-topped, free-standing sub-containers removably mounted on the partition shelf, and a plurality of lower, open-topped, free-standing sub-containers mounted in the hamper below the partition for movement into and out of the hamper through a front wall opening. Preferably the hamper is made of corrugated board and the sub-containers are made from unitary blanks of paperboard.

Abstract: A backpack including a tubular frame whose ends are extensible to elongate the frame to form a cot. A canvas cover on the backpack frame is also extended to serve as a support for the body of the user on the frame and is attached to the extended frame portion.

Abstract: Inflatable envelope systems for use with slurry products in back filling and other operations involving subterranean works. An envelope is inflated to partially crush deformable means disposed between the envelope and the wall of an excavation chamber so as to conform to the wall profile and oppose the flow of solidifiable material between the envelope and the wall.

Abstract: In a method of consolidating soils by injecting a hardner thereinto, a mixture of an aqueous solution of water glass and acidic reactant is employed as the hardener, the aqueous solution being prepared to be within the range of from weak acidity to weak alkalinity in pH value, to prevent the occurrence of pollution such as soil pollution or subterranean water polutions.

Abstract: A large, heavy built structure is moved safely and rapidly from a first position to a second position both on a common ground surface by installing on the ground surface a temporary water-retaining wall enclosure surrounding commonly the built structure at the first position and the second position, supplying water into the enclosure thereby to raise the structure by flotation off the ground surface, applying force to move the structure in the raised state to a position immediately above the second position, and draining the water out of the enclosure thereby to cause the structure to descend onto the second position. A buoyant built structure is floated as it is, while a non-buoyant structure is provided with floats. A structure which must not be wetted is built beforehand in a tray-like vessel of sufficient buoyancy.

Abstract: A one piece extruded elastomeric support and retention liner gasket for resiliently and sealingly mounting a plastic sheet food liner to the cabinet in a refrigerator or freezer includes a barbed lower body which is pressed into an upwardly opening J-shaped channel formed adjacent the inner rim of the cabinet, the gasket including an intermediate inwardly projecting arm and a spaced resiliently supported upper head section defining with the arm an inwardly opening peripheral groove for receiving the outer peripheral flange of the food liner, the arrangement being such that as the gasket is pressed into the J-channel the arm engages the short leg of the J-channel so as to be upwardly deflected thereby narrowing the slot and the head section engages the long leg of the J-channel so as to downwardly deflect thereby also narrowing the slot whereby the flange is resiliently compressively gripped in assembly therebetween.

Abstract: A furniture joint for assembling shelves in spaced parallel relation on supporting spindles to form a standing tier of shelves of appropriate height without the aid of fastening elements and/or tools.

Abstract: A combined drill bit and roof bolt and a method for forming a bore hole in a mine roof and for reinforcing same. The drill bit and roof bolt form the same structural element which preferably comprises an elongate hollow tube. On one end of the tube is formed a multi-bladed bit. The diameter of the hole cut by the blades is somewhat larger than the diameter of the elongate tube. Formed intermediate the blades on the bit head are a plurality of apertures. The apertures perform the dual function of providing an exit passageway for rock chips as the drilling proceeds, as well as providing a means through which a quick-setting adhesive resin is extruded from inside the hollow bolt to the newly drilled annular hole extending thereabout. The extrusion is accomplished by means of a pig element forced up the tube.