This invention involves products, apparatus and processes for so controlling the feed rate of a film being spirally wrapped around an electrical conductor that the elongation of the film is precisely controlled and consequently the thickness of the overlapping layers of insulation is very uniform.

A wrapping machine for wrapping binder strands around core strands has spool-carrying hollow spindles thereof so mounted that each spindle is selectively movable between operative and inoperative positions. In the operative position of each spindle, a free end thereof is located closely adjacent delivery rolls for the core strand, and in the inoperative position, the spindle is so spaced away from the delivery rolls as to readily permit doffing and donning of spools over the free end of the spin...

In a process for producing a wrapped food by charging a material foodstuff into a wrapping tube, sealing the opposite ends of said wrapping tube and conducting a current through said foodstuff to ripen and sterilize said foodstuff by the Juole heat generated therein, an electrical contact member made of fibers impregnated with a salt solution having a concentration equal to or higher than that of the salt contained in said foodstuff for making the fibers electrically conductive is disposed at ea...

A spinning aggregate is disclosed for spinning wrapped yarn. A drivable hollow spindle carrys a corotating sleeve with a binding yarn wound on said sleeve, a corotating positive false-twisting device into which the binding yarn and a sliver enter, said sliver being fed by means of a delivery mechanism having a pair of delivery rollers forming a nip, and a pair of withdrawal rollers following the hollow spindle. It is provided that the distance of the false-twisting device from the nip formed by ...

This invention is directed to a leather-wrapped steering wheel which has a core-covering part of low hardness and high repulsion elasticity and, therefore, permits a leather wrap part to be formed through no medium of any rubber layer. This steering wheel comprises a core, a core-covering part made of semirigid urethane foam, and a leather wrap part covering the core-covering part. The semirigid urethane foam is produced by the reaction injection molding of a urethane foam material for water mol...

An improved wrapped deck pallet assembly is provided which is comprised of an envelope having smooth exterior surfaces and an internal support structure nested within the envelope for enhancing the overall strength of the wrapped deck pallet. In the first embodiment, the envelope has a base, side walls and four flaps, and is formed such that the flutes of the base and the flutes of the flaps are running in a non-parallel angular or perpendicular direction to one another when the envelope is fold...

A well screen in which wire having accurately formed spacing lugs therein is helically wrapped around a tubular pipe having concave arcuate grooves longitudinally formed in the outer surface thereof and either through slots or perforations intersecting the grooves at the point of deepest penetration thereof to produce a funnel effect. In addition to the more conventional keystone wire, there is further disclosed two sub-species of wire having a cross-section including a concave arcuate, preferab...

The shifting of articles contained in sleeve wrapped packages is prevented by adhesively securing the articles to a base member wherein the base member is substantially rigid, planar material with discrete deposits of adhesive for securing the containers thereto; and wherein the sleeve wrap is a tightly engaged tube enclosing the containers and the base member. In one embodiment the packaged articles are cylindrical containers disposed in parallel side by side rows with abutting chime portions. ...

A pre-wrapped gift box comprises a decorative wrapping sheet and first and second box sections operatively attached to the wrapping sheet. The box sections are positioned on the sheet in registration with and adjacent each other and are spaced apart a distance which enables one box section to receive the other box section without buckling or otherwise adversely affecting the smooth surface of the wrapping sheet upon the swinging of the sections toward each other. The box sections may be provided...

The outer surface of an article is covered with a wrapping film, and the both edges of the film are lap-welded with each other to constitute a body seal section. A first slit is formed along the body seal section, substantially parallel thereto, and is spaced a small distance apart therefrom. A second slit is formed in the body seal section substantially at right angles or an inclined angle to the edge of the body seal section. When the end of the first slit is peeled off, the film splits along ...