The welding apparatus serves for the purpose of butt-welding of plastic pipes of diameters larger than 500 mm. All the work is performed by means of the welding apparatus from inside the pipe. Thereby the working time is reduced, the welding quality ensured, and the installation becomes faster. Lifting cranes and heating tents become unnecessary. A novelty is also the possibility of welding pipes ...

A flexible interior element (7) for securing the foot of a skier inside a rear entry ski boot. The respective ends of the element are attached at two spaced points (8, 9) on the rear portion (4) of the upper, and form between these ends a loop which passes over a return element (15), which is displaceable by a tension adjuster so as to vary the length and hence the tension of the loop.

1. Apparatus for the manufacture from a molten thermoplastics material, such as glass, by mechanical drawing of continuous filaments of various cross-sections, comprising especially a glass supply source connected to a die heated by the Joule effect, gas blowing means directed towards the bottom of the die and drawing means for said filaments, characterised in that the bottom of the said die has a...

PURPOSE:To weld simply and surely the outside and inside parts of the fitted part of two synthetic resin members by welding the part by using an ultrasonic wave and a hot plate together. CONSTITUTION:The hot plate 6 fixed, through the intermediary of a heat-insulating plate 7, to the lower surface on the base side of an ultrasonic wave horn 5 extended vertically is made to contact with the fitted ...

The device for joining the edges of plastic webs laid overlapping has a nozzle head (8) which is directed towards the nip or the contact line or contact surface between two pressure rolls (2, 3) and is intended for adhesive or solvent, or has a heating element. The pressure rolls are mounted floating on spindles directed towards one another. The spindles project from the ends of legs (4, 5), lying...

Method and apparatus for providing a compound liquid jet of fine droplets, particularly suitable for ink-jet recording systems. A primary stream is formed by ejecting under pressure a primary liquid from a nozzle and then causing the primary stream to traverse a thin layer of a secondary fluid to form a compound liquid stream which breaks up to form a compound jet of fine droplets each containing ...

The invention relates to a safety device (1) for water-conducting household appliances, in particular dish-washing and washing machines, having a shut-off valve (3) which is connected in series with the water inlet valve (2) and whose influence is effected by a float-actuated permanent magnet (8) arranged outside the valve housing (11). In order to suppress the water supply to the appliance both w...

A front-loading washing machine with a tub (4), in which a washing drum (5) is mounted rotatably, and with an orifice (9), provided in the tub, for access to the washing drum (5) is equipped with a return device (2) for the washing water, which comprises a plurality of cups (11, 12) fastened in the form of a ring around the washing drum (5) or otherwise formed there. The cups (11, 12) alternate wi...

The invention is a feed screw for feeding concrete into a concrete caster. Two or more scaled screw segments (19, 20) are positioned to be removably attached around a drive axle (18) in drive integration with this part. The axle is designed for permanent installation in the concrete caster.

An arrangement for introducing modifications in the program of a program-controlled system. Each time a modified version of a selected program function is stored in the system, it is tagged with a function sequence number; meanwhile, the original version of the program function is retained in the system. Each time a program process is initiated, it is tagged with a process sequence number. The two...

The reactor 1 has vertical tubes 10 connected at the top to two common chambers 15 and 17 feeding an organic liquid and an SO3- containing gas respectively. At the bottom the tubes enter a common collecting chamber 40. The gas is fed into the tubes 10 at a pressure of 0.1 to 0.5 bar, which is substantially the same as the head loss over the length of the tubes 10. The liquid is fed into each tube ...

The present invention provides an exchanger and a method for achieving heat transfer between solid particles contained in an enclosure and the external environment. The device comprises a main enclosure and several auxiliary compartments separate from each other and at least one of said compartments comprises its own fluidization means.

A shoulder bag such as a photography case adapted to be suspended from a shoulder of a bearer of the same is suspended by means of a strap engaging opposed pivot pins projecting outwardly from opposed side walls of such bag. An upper rear edge portion of the bag is inwardly arched or concave so as to generally fit over the hip of the bag bearer, and a waist-encircling band passes through recessed ...