In an apparatus for joining textile threads with the aid of compressed air, there is provided a device for checking the tearing strength of the joint zone of the threads before their extraction from the apparatus. The device comprises at least one mobile member arranged to act on the loop formed by the joined threads with a predetermined traction force at an intermediate point between the points a...

The shell is removed from a crustacean by creating a pressure difference across the shell. Initially the crustacean is heated until body liquid adjacent the shell is just below boiling point. The pressure on the crustacean is then suddenly lowered to induce the liquid to boil and thereby create the pressure difference across the shell. After pressure treatment, the crustaceans are projected into a...

A method and an apparatus for testing the tightness of a threaded connection between an oilfield pipe and a tapped connector. An annular space along the threaded connection is sealed with a test head, and only the threaded connection is thus subjected to internal hydraulic pressure via this connection.

Syntactic foam compositions are manufactured by heat-curing, in the presence of a free radical generator, a mixture comprising a resin and hollow spheres; the resin consists of (a) 10 to 100% of polybutadiene with 20-95% 1,2 units, 5-60% thereof being in a carbocyclic cyclized form, its number average molecular weight being at most 100,000; (b) 0 to 90% of polybutadiene with 40-98% 1, 2 units and ...

This disclosure relates to deep sea mining apparatus, comprising a relatively straight lift pipe, the lift pipe being adapted to extend substantially vertically from the floor of a body of water upwardly to a ship on the surface of the water. A plurality of jet pumps are connected in the pipe at intermittent locations along the length of said pipe, and a hydraulic feed pump is located adjacent eac...

PURPOSE:To speed up transferring an entire collection of data elements each consisting of a constant number of words and being in store in the main memory at a regular address interval onto a vector register by calculating sequential addresses. CONSTITUTION:Let the array data stored in memory 5 be a1, and given positive integers p, f and s. Then, the calculation is executed by selecting elements o...

PURPOSE:To obtain a solution by matrix suitable for pipe line in processing by utilizing as index vector and row/column numbers of non-zero elements of a matrix whose structure in randam and spares and by executing vector operation on a row of non-zero element values. CONSTITUTION:The first thing to be done as pre-processing is to detect filling f32 and f4 using the method of solution by the LU re...

PURPOSE:To remove suspended matter in a stabilizing agent, by a method wherein the suction port of a pump is disposed to the bottom part of an excavated hole, the delivery port of a different pump is located to the central part of the excavated hole, a flow along the slope of an expansion bottom part is formed. CONSTITUTION:After an expansion bottom 100 is excavated by an earth drill process, a su...

PURPOSE:To simplify the operation of the titled system by first storing program names to be processed and control information which indicates their execution sequence and then sequentially executing the specified programs to be processed using a program designation key. CONSTITUTION:In an auxiliary memory 6 are stored a control program 16, programs to be processed A-D and the control information 2...

A process for converting into lighter viscosity products the heavy fractions of petroleum or other hydrocarbon containing components comprises the use of steam and catalysts, at least one of which is prepared by treating an alcoholic solution of alkali metal hydroxide with hydrogen sulphide. The bottom and top fractions from the catalytic treatment may be each subjected to catalytic treatment.