A manhole base section for sewer lines having reinforcing sections on the inside of the base section at opposite ends of the flow channel. Each reinforcing section is of substantial thickness, but the outer side conforms to the outer side of the base section. In each reinforcing section is an inward ...
A method for the production of a homogenous gas mixture from two gas streams of different parameters in which an open or free equalizing space downstream of a superimposed catalyst layer is provided. Within such open space is a mixing assembly imposing a little deflection upon the reaction gas strea ...
A leg for attachment to an article of furniture comprising an upper leg portion, a lower leg portion and a tie rod extending through the upper leg portion and into the lower leg portion. The lower leg portion can rotate freely on the tie rod and is connected to the upper leg portion or to the tie ro ...
A travelling face support has an attached extensible shield which, besides providing the means of shoring up the roof of the seam and providing a connected coal cutting shield, has both a packing shield to protect the coal cutting area and a floor beam. One or more pull-back cylinders act upon a sup ...
A gas filtering device in which a series of filter units are arranged parallely within a housing. Each filter unit comprises a frame about which fabric filter is wrapped to form parallel sides, thereby providing a filter pocket. The filter units are inserted into a casing through slots in a casing w ...
A unitary flexible gas-tight seal is provided between the stationary cover of an electrolysis cell and each anode stem which is of current carrying material. The seal comprises a ring plug of flexible material which snugly fits the cover hole through which the respective anode stem projects. Integra ...
A chess game involving a game board of multiple spiral configuration provided with a center space or island and intended for a predetermined number of players depending upon the structure of the board. The arrangement involves two spirals for two players, three spirals for three players, etc., thus, ...
A multiple component building brick in which grooves are used to simulate separation of the bricks, the brick being preferably of lightweight concrete material and having a projection or nib on an end face and preferably on a rear face to assist correct spacing corresponding to the grooves, includin ...
A wall or the like for modular or mobile homes, which is usually prefabricated and comprises a frame, such for example as sole and upper plates connected by spaced studs. Secured to the frame are plasterboard sheets which abut each other with plain and unfinished joints. Covering the entire area of ...
A transport system for underground mining in which the cars, including the tractor and the trailer cars, have a plurality of supporting wheels in the form of flanged rollers provided with concavely curved surfaces which engage a track consisting of a pair of longitudinally extending convexly curved ...
