Abstract: A plastic polishing composition and method for making such a composition in emulsion form containing a fatty acid, an alkanolamine, cetyl alcohol, glyceryl monostearate, and liquid forms a carrier for an abrasive material, an acrylic filler, an anti-static agent, and a hydrocarbon solvent. The composition cleans as it polishes translucent and opaque plastic surfaces by removing foreign matter and filling minute surface scratches in a one-step operation.

Abstract: A structure for mounting and apparatus for opening, closing, and locking a large, overhead door is adapted for buildings constructed on terrain which is not level and having floor and overhead structures that conform to the terrain. A sloping overhead truss spans a door opening and includes a widened faceplate along the length of its span to accommodate mounting a large overhead opening door along a horizontal line between vertical columns. A combination manual and automatic electrically powered door opening apparatus includes a counterweight, a coil chain and sheave for manual operation which is interchangeable with an electrically powered motor for automatic operation, all connected to a common lift cable which applies substantially vertical lifting force to the lower edge of the door for opening. Bias means for causing initial folding of door sections for opening, and locking apparatus for resisting folding of the door sections to prevent opening are also provided.

Abstract: A magnetic compass has been devised which is of the type having a pivot point displaced above the plane of the permanent magnets so that the distance of displacement of the pivot point with respect to the center of force will reduce the tilt angle or tipping otherwise caused by changes in latitude when the compass is to be operated in different parts of the world and a spherical needle bearing can be employed at the pivot point as a result of the increased pendular effect achieved by displacing the pivot point above the magnets. The need for a lift assembly to cushion the pivot point is eliminated while providing for an extremely rugged and versatile magnetic compass which will serve as a light, portable pocket transit capable of measuring horizontal and vertical angles as well as being used as a prismatic compass, level, clinometer, plumb or alidade.

Abstract: A gardening method and unit utilizes a unique liquid circulating system in combination with an adjustable, high intensity lighting system including a novel form of reflector panel assembly in which the feeding cycle and the lighting cycle can be closely regulated to control the environment for plant life within an enclosed area. The method and system of the present invention is particularly advantageous in relatively compact portable units so constructed that the seedlings or plants may be grown in upper and lower spaced trays, each having its own lighting system controlled by a common timer and a common liquid circulating system in which the liquid or nutrient solution may be pumped into the upper tray and drained by gravity into the lower tray to carry out combined top flooding and subirrigation. In the alternative the system is operative to carry out top-irrigation by spraying water in the form of a fine mist over natural or organic soils.

Abstract: A dispersive electrode has been devised for electromedical equipment consisting of a thin sheet or layer of electrically conductive material covered on one or both sides by a flexible laminate. To facilitate attachment to the skin of a patient during electrosurgery, the laminated sheet may be secured to a resilient backing member preferably having bifurcated ends to which an adhesive is applied in order to effect a secure connection to various parts of the body and to more readily conform to the contour of different parts of the body. The pad includes a tab projecting from one end of the conductive layer which tab is preferably of rounded or somewhat circular configuration and adapted to be inserted into a snap-type connector.