Other

The Firestone Tire & Rubber Company

Stanley S Gross

George G Bohm

A bubble generator for producing a stream of uniform bubbles includes components which are stationary. The bubble generator includes a container or plenum having an inclined face plate with a plurality of nozzles positioned thereon. The nozzles are elongated slots positioned in the face plate and have an insert disposed within the slot with edges that extend within the plenum and above the surface of the face plate for facilitating formation of a liquid film across the slot. The insert may have an extension positioned at an upper portion for providing lift and buoyancy to the bubbles. A liquid supply manifold is positioned above the nozzles and directs a flow of liquid to the nozzles. As the liquid flows across the slot and is contained within the insert, a film forms across the slot without the need for any dipping or priming means. An air supply then directs air into the liquid film and produces the stream of bubbles.

Bubble generator

An apparatus is disclosed which provides a low temperature mist of cleaning liquid for cleaning jewelry and gems, and, particularly, sensitive gems which cannot withstand harsher methods of cleaning. The apparatus also provides a stream of warmed compressed air for drying the jewelry once cleaned.

Low temperature apparatus for cleaning jewelry and gems

An apparatus for the production of a continuous rubber strip which is molded with surface designs, such as tire treads, in the uncured state and then cured, after removal from the mold, by heat or radiation is disclosed. In the apparatus the extruded rubber strip is passed between cooperating mold segments carried by respective endless belts which, along with related components, apply suitable temperatures and pressures to the strip to product the surface designs. The molded uncured rubber strip is removed from the molds and then completely cured by radiation and/or heat.

Apparatus for continuous tread production

An apparatus and processes for the production of a continuous rubber strip which is molded with surface designs, such as tire treads, in the uncured state and then cured, after removal from the mold, by heat or radiation is disclosed. In the apparatus the extruded rubber strip is passed between cooperating mold segments carried by respective endless belts which, along with related components, apply suitable temperatures and pressures to the strip to produce the surface designs. The molded uncured rubber strip is removed from the molds and then completely cured by radiation and/or heat. Process embodiments are also disclosed wherein partial curing of the rubber while in the molding apparatus is performed.

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Evans City, PA, United States of America

Stanley S Gross