The process for manufacturing pneumatic tires comprises as essential step the manufacture of a tire body by winding cords or cables (3, 23, 35). The cord or cable is withdrawn from a supply reel (7) under constant tension and laid around and anchored to the bead cores (2; 22; 36; 39) arranged at both sides of the tire. In addition a peripherally extending belt is applied which again can be formed ...

Process for the production of porous, powdery polypropylene, and utilization thereof. Hot solutions of polypropylene in pentaerythrol ester are slowly cooled down to approximately room temperature, forming a solidified mass, after which it is extracted with an extractant in which pentaerythrol is soluble. Before extracting, the size of the solidified mass may be reduced mechanically. After extract...

In apparatus for producing metal powder by rapid solidification of molten metal particles flung into a quenching chamber from a rotating disk through vertical zones of cooling fluid, improved cooling fluid flow, improved operating efficiency and low pressure losses are provided by having the cooling fluid introduced into the quenching chamber via a plurality of cylindrical tubes each having an inl...

An apparatus for slit radiography comprising an X-ray source (1), an X-ray detector (6) positioned behind a body (L) being irradiated, said detector collecting the radiation passed through the body, and a slit diaphragm (2) placed between the X-ray source and the body being irradiated, through which diaphragm there is formed a planar X-ray fan beam (4), while for obtaining a complete X-ray shadow ...

An apparatus for slit radiography comprising an X-ray source (1), an X-ray detector (6) positioned behind a body (L) being irradiated, said detector collecting the radiation passed through the body, and a slit diaphragm (2) placed between the X-ray source and the body being irradiated, through which diaphragm there is formed a planar X-ray fan beam (4), while for obtaining a complete X-ray shadow ...

An apparatus for slit radiography comprising an X-ray source (1), an X-ray detector (6) positioned behind a body (L) being irradiated, said detector collecting the radiation passed through the body, and a slit diaphragm (2) placed between the X-ray source and the body being irradiated, through which diaphragm there is formed a planar X-ray fan beam (4), while for obtaining a complete X-ray shadow ...

A stoppered drug vial forms part of a drug delivery system which maintains the sterility of the drug in storage, dilution and use. A removable, pierceable diaphragram is placed over the stopper which seals the vial. The removable, pierceable diaphragm is held in place by attachment to a skirt member which encloses and is in frictional contact with the upper portion of the vial wall. Access to the ...

A substantially flat collapsed plastic bag with an evacuation form unit insert positioned therein as manufactured to serve as a form about which the filled bag will collapse as it is emptied. The form unit comprises a ring for mounting the unit on the spout of the bag and a multichannel form extending radially from the ring and hingedly connected thereto. A simple method is provided for manufactur...

1,4-Dihydropyridine derivs. of formula (I) and their acid addn. salts are new. R = OH, 1-4C opt. branched alkoxy which may be substd., such as methoxy or methoxymethoxy, or 2 gps. R on adjacent atoms form an alkylenedioxy gp., such as methylenedioxy or ethylenedioxy n = 1,2 or 3 R1 and R2 = 1-4C opt. branched alkyl which may be substd., such as methyl, ethyl, propyl, isopropyl, butyl, isobutyl, me...

In order to minimize the risk of infection when a large number of animals are injected with the same needle, the injecting gun is provided with a stainless steel sleeve which surrounds the needle. The sleeve comprises a first tube attached to the needle connecting body and a second tube telescopically slidable within the first tube against a spring. A detachable plastics cap incorporating a steril...

Nucleoside analogues having a ring-open structure of general formula where R and R min may be hydrogen, silyl, substituted alkyl or benzyl, and X is an optionally substituted base such as guanine or adenine, have been shown to exhibit anti-viral and other biological activities at non-toxic levels. Many phosphate-linked dinucleotides thereof are also novel compounds.