A folding door, of the kind composed by an array of wooden slats connected by intermediate hinge elements; the intermediate hinge elements are of wood, preferably of the same color and grain of the wood the slats are made of, and a metallic hinge element is hidden within the strips of wood interposed between any two wooden slats so that the external appearance is that of an all-wooden assembly bot...

A method of making a packing seal comprising compression molding a thermo-setting plastic in a spiral mold so that a partially-cured spiral seal is formed, removing the partially-cured seal from the mold, and winding it on a mandrel of a selected diameter, curing the spiral seal on the mandrel, and removing the seal from the mandrel, whereby the resulting seal is resilient and can be used to seal ...

A double sieve or twin-wire papermaking machine possesses a substantially planar section of a lower band which is equipped with a headbox. Furthermore, it contains a shoe containing a domed surface and a dewatering cylinder. Arranged after the dewatering cylinder is a deflection roll which is located at the side of both bands, typically in the form of sieves, wires or filters, which face away from...

The safety loop (15, 16) is fixedly connected to a holder (13), by means of which it can be releasably fixed to the head (4) of the ski-stick handle (1) with a snap-fit effect. As a result of this measure, reliable releasing of the loop (15, 16) in the event of danger and also simple re-attachment of the loop (15, 16) are guaranteed.

In an automatic bending machine, a plurality of bending tools are arranged around a central working station. Each bending tool is fastened at a slide unit which is operated for reciprocating motion by a driving device. All driving devices are provided with a driving shaft respectively and all driving shafts are in gear engagement with a common central wheel. Each driving device comprises a sealed ...

The blade comprises separate scorers (8) each of which is secured to the blade body plate (2) so as to project beyond the cutting edge (3) of the blade (1). The scorers may be retained in grooves (7) in the plate by adhesive or welding and are replaceable when worn instead of replacing the whole blade. The scorers are utilised for breaking up the chip material transversely, and the blade can be re...

To protect data against unauthorised access, particularly in remote data processing, in a data block which is divided into n groups, each of 2 characters, each bit group forms an address for a code group in a code memory (SP), which can be loaded. In a non-linear transformation, this code group replaces the addressing bit group. In a linear transformation, the first character of each data block is...

A method of, and apparatus for, fabricating a textured yarn or the like comprising a false twist device containing a number of friction disks arranged in spaced coaxial relationship with respect to one another in succession and thread guide elements helically distributed along the circumference of the false twist device. The thread guide elements extend into the space between the disks and are hel...

Incubation of a parent strain of Vibrio cholerae at elevated temperature to produce a hypotoxinogenic variant strain and mutation of the variant strain results in mutant strains which retain the biotype and antigens of the parent strain, and which are genetically stable and useful as live oral vaccines for immunization against cholera. Preferably, a hypotoxinogenic mutant which is also non-pathoge...

The present invention provides a multistage process for the full bleaching of pulp having at least three-stages in which the pulp, when required after a pre-treatment with at least one of magnesium salts and organic complexing agents, is treated with a per compound in a first stage, with chlorite in a second stage and bleached with a per compound in a third stage.

A large antifriction bearing composed of a plurality of segments for absorbing forces generating axial, radial and pitching forces, in which each of the individual segments is formed by two bearing ring segments. Within the region of the roller path of the large antifriction bearing one bearing ring segment has a cross section of a substantially one-piece T-shaped profile, whereas the other bearin...

A delay network, having a chain of all-pass sections, each comprising two separate branches, a resistive and a capacitive branch, which terminate in amplifiers with negligible signal consumption whose output signals are combined. This enables an analog delay network to be realized in integrated circuit technology.

SKI BOOT LINER HAVING ADJUSTABLE WIDTH SIZING A liner for a molded athletic boot is formed with pockets on either side thereof in the area about the wearer's ankle. Each of the pockets has a slit-like opening for positioning one or more inserts therein to adjust the width size. Closure means are provided to close the slit-like openings of each pocket.