A barrier in a subterranean structure is provided by the form of a sealing wall consisting of glass panels or panes in spaced-apart relationship within the packing mass between the panes and also embedding the sealing wall in the slit which is found in the subterranean structure.

A tool for multiple purposes including turning valve wheels, opening drum plugs and vents, driving sockets, turning screws, use as a drift pin and prying, among other possible uses, the tool having a handle and an exterior shank and an interior shank, each shank having a square cross section and being in a spaced relationship and parallel to one another located at one end of the handle, the opposite end of the handle having an edge and the handle being tapered, the interior shank which is locate...

The invention relates to an adhesive system for fixing dental restorative materials to hard dental substance constituting i) a component which contains at least one activator which is a constituent of a chemical initiator system, and contains at least one ethylenically unsaturated compound which is capable of polymerization, ii) a component which contains at least one ethylenically unsaturated compound which is capable of polymerization but otherwise contains no further activator, which is able ...

Support material for medical purposes, which is characterized in that an addition of high-strength fibers or threads on an organic or inorganic base with a maximum tensile strength over 60 cN/tex gives the support material a maximum tensile strength of over 2 N/cm and the support material has mainly a maximum tensile strength of under 400%.

A vessel for metallurgical purposes, for transporting molten metals, having a metal casing which accommodates a refractory lining, is composed of individual tubular lengths. Two reinforcement rings which run in the circumferential direction and are integrated in the metal casing at an axial distance from one another, and on which two bearing lugs are arranged opposite one another on the outside and are supported by in each case one plate which is connected to the reinforcement rings. If appropri...

A vessel for metallurgical purposes and in particular a vessel for transporting molten metals, having a metal casing formed of individual tubular shells with a heat-resisting lining affixed thereto. Two stiffening rings extend circumferentially around the casing. Two vessel carrying trunnions are arranged opposite one another at the outer side of the metal casing and are supported by a plate connected to each stiffening ring. The stiffening rings are provided as an integrated component part of t...

In a shower device designed to carry out a complete and constant 360-degree therapeutic sweeping of the user's body, water is sprayed from a shower head and a series of holes in tubes along the space provided for use as a shower stall. These tubes are connected together by a rotary air and water servomechanism revolving around a vertical water supply axis. The holes are positioned to direct the sprays of water toward the centre of the shower stall. The rotary servomechanism is driven by a motor,...

In a drill for surgical purposes comprising a housing with an electric motor and a drilling mechanism driven by this electric motor arranged therein, and a handle forming part of the housing and having control grips arranged thereon for controlling the speed and reversing the direction of the electric motor, and serving to accommodate a battery and the electric control member of the electric motor, to enable sterilization without causing any damage, on the one hand, and high-power operation, on ...

In a saw for surgical purposes comprising a saw blade holder movable by a motor and a saw blade fixable in the saw blade holder, to enable insertion and removal of the saw blade without a tool, it is proposed that the saw blade holder comprise an insert guide for the saw blade with a holdback projection, that the saw blade carry a resilient detent projection which in a relaxed position, with the saw blade inserted in the insert guide, engages the holdback projection from behind, and that an actu...

A scale includes a housing having a graduation disposed beside a groove and a casing secured on the housing for receiving a band tape. A slide is slidably received in the housing and has a projection slidably engaged in the groove for indicating the graduation. A hook is secured to the slide for hooking an object to be weighed. A spring is coupled between the slide and the housing for allowing the projection to be moved along the groove and for weighting the object. A calibrating device may be u...