The compositions comprise about 80 to about 97% by weight of the refractory particles of, for example, tungsten carbide. The particles are bonded within an alloy matrix of between about 5 and about 50% nickel, sufficient carbon to avoid the formation of detrimental carbon deficient or excess carbon phases and a balance of about 95 to about 50% iron by weight. In a preferred embodiment, the alloy m...

Apparatus and method for starting respective leading ends on web running continuously and would into successive rolls, such as paper. As each roll reaches a final diameter, a fresh leading end is provided on the web by slitting in a generally cross-machine direction from a leading starter tongue projection extending downstream. The starter tongue projection with the fresh leading end of the web is...

Spiicer device (10) to disassemble and recompose yarn mechanicliy whereby said device (10) comprises means (12) to untwist-retwist the yarns to be spliced aiid said yarns (20-21) undergo an untwist in a action in a position of mutual non-interference and an action of removal and discharge of excessive tail ends (120-121) and also a retwisting action, said device (10) including in cooperation: - m...

A tire whose inner wall is provided, below the crown of the tire and at least from one shoulder to the other of the tread, with a lining containing at least one means for sealing puncture holes is improved due to the fact that the lining comprises at least one layer of a vulcanizable sealing mixture separated by a vulcanized elastomeric partition from at least one layer of a vulcanizing mixture ca...

A rotary drum air separation system separates mixed solid materials into a light fraction and a heavy fraction with substantially no stagnation of material in the air drum. It further provides for processing high volume urban solid waste without first size reducing the waste. The system separates such waste into a light fraction, substantially free of glass and ready for composting or for use as a...

A quick connect fitting for tubing which can be inserted into a pre-assembled fitting where it will become sealed and locked against pull-out. A main fitting body has an open-ended recess in which is located a movable piston to seal against the body and an inserted tube. The piston wedges over a conical extension on a sealing gland retained by a snap-on cap, the gland and the cap having complement...

The locations of defects in flat glass (1) are detected during conveyance through a detection station where the glass is scanned by a radiation beam (11). The beam sweeps transversely across the path of the glass through a distance in excess of the glass width so that the beam sweeps through both side edges. Beam deflection occurs when the beam encounters a side edge boundary of the glass (1) and ...

The device for grinding machining planar workpiece surfaces has a tool (8) which is fitted on a bearing means (5) which is arranged on a shaft (3) and bears on a supporting ring (9) fastened on a framework (1); a unit for fastening workpieces having a pressing apparatus (21) for pressing said workpieces against the tool (8); a pressing apparatus (33) for pressing the bearing means (5) against the ...

A rail vehicle brake unit has a parking brake member (18) provided with a shoulder (18 min ) and movable in a brake force applying direction concurrently with a force delivering push rod (2) of the unit, which has a fixed mounting bracket (3) at each side. A parking brake arrangement for such a brake unit is attained in that two generally co-directional parking brake levers (19, 20) are pivotally ...

The process involves the use of an additive consisting of an alkali metal or alkaline-earth metal metaborate. Manufacture of creep-free prepegs by using solutions of phenolic resins and reinforcements: glass fibres, carbon fabric.

Water soluble polymers dispersed in a water-in-oil emulsion are treated to reduce the water content thereof to provide a polymer dispersed in oil which is stable to coagulation or agglomeration during subsequent treatment. The composition can be chemically modified and/or made self dissolving in water by addition of surfactant without polymer agglomeration.

The process involves the use of an additive consisting of an alkali metal or alkaline-earth metal metaborate. Manufacture of creep-free prepegs by using solutions of phenolic resins and reinforcements: glass fibres, carbon fabric.

A method is provided for coating a vulcanized polyalkylene rubber with a composition which contains an ethylenically unsaturated polyurethane binder containing active hydrogen atoms with a cross-linking agent for the polyurethane and a free radical initiator. The polyurethane binder is prepared by reacting an organic polyhydroxy compound, an acrylic or methacrylic hydroxy ester and an organic diis...

The present invention relates to coherent poly(acetylene) films and to a method of producing such polyacetylenes. The process comprises solvent casting a solution of a polymer of the general formula (V) derived from a precursor (IV), and transforming the pre-cast, polymer (V) into a poly(acetylene) (III) film and a by-product (VI) at a temperature between 20 DEG and 200 DEG C. at reduced pressur...

A granular or powdery resin which is a condensation product of a phenol and an aldehyde and optionally a nitrogen-containing compound having at least two active hydrogens, said granular or powdery resin being characterized by (A) containing spherical primary particles and secondary particles resulting from the agglomeration of the primary particles, each of said particles having a particle diamete...