Automated production of a multicell lead-acid storage battery is facilitated by providing the battery container (1) with one open side through which packs of the electrodes are passed for insertion in the container cells, the open side being subsequently sealed by welding on a side wall (18). The electrode packs are formed by concertina-folding of an assembly of continuous lengths of positive and ...

Improved apparatus of the type comprising inside a fixed enclosure, a rotary assembly constituted by a treatment rotor with apertured discs angularly offset one with respect to the other, upstream by a rotary distributor and downstream by a fan with optional interposition of a rotary rectifier. According to the invention, the apparatus comprises between the discs and the fixed part of the enclosur...

A method of, and apparatus for, taking-off a thread or the like alternately from one of two bobbin packages arranged side by side in a creel for textile machines. The method contemplates taking-off a thread from a bobbin package, the tail end of such removed thread being knotted to the lead end of an essentially parallelly arranged reserve bobbin package. The knot is formed by first pulling the le...

Apparatus for picking, transportation and depositing of sheeted and/or folded material from different bundles or bunches of material comprises a conveyor module for transport and registration of the sheeted material, the conveyor module including a control device for controlling and registering the material to be transported by the conveyor in a desired direction of transport, at least one conveyo...

An improved collecting chamber for use with centrifuges for separating particles of different density suspended in a fluid, especially for separating the various fractions in human blood.

A pneumatic tire whose inner wall is provided beneath the crown with a lining which extends at least from one shoulder to the other of the tread and comprises a layer of a sealing mixture capable of flowing into a puncture hole, the layer being covered radially inward by a vulcanized elastomeric partition, is improved due to the fact that the layer of sealing mixture has a base of at least one ela...

A pneumatic tire having, between two vulcanized elastomeric partitions, a layer of a sealing mixture arranged on the inner wall of the cavity of the tire, at least below the crown and from one shoulder to the other, is improved due to the fact that the layer of sealing mixture has a base of at least one vulcanizable elastomer of low molecular weight, preferably less than 30,000, contains at least ...

PURPOSE:To improve the operability of an automatic travelling working car by automatically controlling steering type switching and a steering variable by one operation lever. CONSTITUTION:The titled working car is constituted such that both front and rear wheels 2, 3 can be steered, and receiver 6 for receiving respective control parameters such as a travelling speed transmitted from a transmitter...

A cap closure is provided for bonding to the neck of a container. The cap closure includes a base portion enclosed by a side wall, a peripheral rim extending outwardly from the side wall with the rim being adapted for bonding to the neck of the container, an administration port connected to the base portion, a medication addition port connected to the base portion, a resealable injection site conn...

An agricultural tractor having two longitudinally aligned back wheels on each side receiving an endless track of the "caterpillar" type and steerable front wheels which are controlled automatically by a predetermined line of travel whereby the tractor is maintained within margins equidistant from the line of travel defining a path which it is desired the tractor follow to perform agricultural oper...

A method of producing a phenolic foam composition comprises reacting (A) an aqueous solution of a reactive phenolic resin having 65-85% wt. solid solution (B) a foaming agent and (C) a reactive acid hardener wherein the ratio of component (A) to component (B) is from 4.5:1 to 9.3:1 and the ratio of component (A) to component (C) is from 6.5:1 to 7.5:1. The phenolic foam composition which has ex...

A method of making a cured foamed amino formaldehyde product utilizes an amino formaldehyde precondensate of water content below 20% by weight in order to obtain a less brittle product. A liquid foamable composition is made by dispersing a curing catalyst and a blowing agent in the precondensate and the composition is heated to cause the blowing agent to form a foam and the precondensate to cure.

A method for the preparation of semipermeable membranes comprises sulphonating porous membranes of acrylonitrile polymers containing 40 to 100 mole percent of acrylonitrile. A heterogeneous membrane which can be prepared by such a method comprises an acrylonitrile polymer membrane which has a dense surface layer of less than 1 mu in thickness and has pores increasing in size gradually away from ...

A composite material comprising polymethyl methacrylate coated a vinylidene fluoride polymer wherein at least one surface of the polymethyl methacrylate is coated with a coating of a vinylidene fluoride polymer having a maximum thickness which is one-tenth of the thickness of the polymethyl methacrylate, the thickness of the vinylidene fluoride polymer coating being no greater than 400 microns. An...

The present invention relates to a composite product constituted by virtually contiguous particles of expanded polystyrene, connected together by an expanded or foamed phenolformaldehyde resin, of density between 50 and 500 g/l and to a process for preparing said product and to the finished products, in the form of panels or moulded articles, made from said product.

A melt extrusion process for producing a low density open cell filtering element for an aerosol such as tobacco smoke from plasticized cellulose acetate. A mixture of cellulose acetate, plasticized, a volatile liquid blowing agent which is at least a partial solvent for the cellulose acetate and a nucleating agent are melt extruded under conditions wherein the melt is subjected to high shear, the ...

Thermoplastic synthetic resin foam articles are described which, in accordance with machine production, are elongated principally in the longitudinal direction and have a cross sectional dimension of at least 6.35 mm and a cross sectional area of at least 51.6 cm<2>, where the cells have a mean cell size in the range from 0.1 to 1.2 mm. These cells contain at least one low-permeability halogenated...