Abstract: A sheet heater including a substrate, a semi-conductor pattern (typically of colloidal graphite) having a pair of parallel, spaced-apart, longitudinally-extending stripes and a central portion extending between and electrically connected to the stripes, and a pair of parallel, spaced-apart, longitudinally-extending conductors one of which overlies and engages each of the stripes. Each conductor is significantly wider than the underlying stripe of the semi-conductor pattern, and includes a longitudinally extending strip portions along the inner and outer edges of the conductor, and a plurality of longitudinally-spaced openings located therebetween. The strip portion at the inner edge of the conductor overlies and engages a respective stripe; and a sealing layer of insulating material overlies the respective conductor and is sealed to the substrate along the inner and outer edges of the conductor and through the longitudinally spaced openings.

Abstract: An electrical heating device comprises a substrate, an elongated conductor extending longitudinally of the substrate, a semi-conductor pattern carried on the substrate and electrically connected to and extending from the conductor pair, and a sealing layer overlying the conductor and sealed to the substrate at opposite sides of the conductor. The conductor comprises a pair of rectangular in cross-section metallic conductor elements, placed one on top of the other in face-to-face engagement with and unattached to each other. The bottom conductor elements faces towards the substrate and the upper conductor elements faces towards and engaging the sealing layer.

Abstract: The heater of the present invention includes a paper or plastic substrate on which is printed a semi-conductor pattern (typically a colloidal graphite ink) having (a) a pair of longitudinal stripes extending parallel to and spaced apart from each other and (b) a plurality of identical bars spaced apart from each other and extending between and electrically connected to the stripes. A metallic conductor (typically copper stripping) overlies each of the longitudinal stripes in face-to-face engagement therewith, and the conductors are held in tight engagement with the stripes by a sealing layer that overlies the metallic conductors and is sealed, at opposite sides of the semi-conductor stripe associated with the particular metallic conductor, to portions of the substrate that are free from the printed semi-conductor pattern.

Abstract: An elongated metal bolt embedded in a brick and means at the ends of the bolt for holding the same tightly to the ends of the bricks, and collars inserted between the ends of the bricks and the nuts to balance the difference in expansion of the bolt and the brick under conditions of heat.

Abstract: A punch press comprising multi-station, progressive die tooling, for providing metal covers with easy-open closures, is fitted with a work transfer mechanism facilitating successive positioning of the covers, the tooling employing features thereof to precisely locate and align the covers in the respective stations. More especially, in addition to cover operating dies and work supporting members facilitating lateral accommodation and positioning of the covers to avoid unwanted deforming stress therein, correct vertical alignment of the tooling at successive stages to produce the closures is economically assured.

Abstract: Mixing or homogenizing an avian egg by piercing the egg at its smaller end with a relatively small upwardly pointing needle while holding the egg in the hand, said needle having an offset portion, and then rapidly rotating the needle so that said offset portion is inside the egg and acts as a beater.

Abstract: A current carrying member embedded in a brick-like member and having a wrapping comprising a flexible graphitic covering providing intimate contact with respect to the brick, also allowing the current carrying member and the brick to expand at different rates under conditions of heat while still retaining a very intimate electric contact.

Abstract: In an electric generator capable of producing surplus electrical energy at certain periods, that improvement which comprises utilizing the surplus electrical energy to directly heat an electricity conducting heat storing magma, the magma having passages therethrough for the selective reception of water producing steam during high demand or low energy producing periods to increase the total production of electrical energy.

Abstract: Certain articles, including easy-open sheet metal can tops or covers, include closures which are, at least in part, defined by indentation and/or fracture through the metal. This invention provides a high speed mechanism for coating particular portions of the articles, for instance for sealing only the fractured locality of each successive cover, a shallow printing on applicator being in timed communication with a source of hot pressure fluid such as a hot melt or lacquer. A hold down or backing member precisely cooperates with the applicator in relative reciprocable, high speed to insure that sealant fluid is applied to the predefined locality of the article, and resilience in the article and/or sealing means such as O-rings of the applicator is, in effect, relied upon to provide dwell during the moment of coating thus providing rapid, economical production.

Abstract: A container for materials to be mixed e.g., paint, said container having a removable plug in an aperture, said plug being removable for adding materials to the mixture, the plug having a diaphragm to be pierced by a single sharp mixing member and including means to rotate the mixing member while the container is completely closed. The mixing member is a needle or the like having its major portion at an angle to the axis of the means rotating it.

Abstract: An adjustable strap comprising two pieces of relatively soft elastomeric elongated strips. The strips are interconnected, one strip having an opening through which the other strip passes. The strip having the opening has a longitudinal central elongated depression therein provided with a series of upstanding teeth; and the strip threaded through the opening is provided with an elongated series of upstanding teeth slanting in the opposite direction for engagement with the teeth in the depression at any desired point of adjustment along the strap, there being another connection between the two straps.