Abstract: A high efficiency sulfur melting system includes a melting vat having a heated platen. The platen has a waffled surface. A piston exerts pressure on powdered sulfur contained in the melting vat, forcing the powdered sulfur into intimate contact with the surface of the heated platen. The platen contains a large number of seepage holes. Powdered sulfur in intimate contact with the surface of the heated platen melts. The melted sulfur is immediately forced into the seepage holes by pressure from the piston. The melted sulfur is forced through the seepage holes into a collecting device.

Abstract: Gummed labels having outlines corresponding to top and bottom views of integrated circuit packages include numbered lead locations as seen from both the top and bottom of a particular integrated circuit package. A simplified schematic diagram located on the portion of a label corresponding to the integrated circuit package body indicates connection of an integrated circuit to the respective leads. Part numbers and brief descriptions and commercial integrated circuits are printed on the labels. A plurality of unused labels are removably attached to a backing sheet, and are peeled off and placed on a working sheet to enable an engineer or technician to easily make diagrams or printed circuit board layouts without having to refer to a manufacturer's catalog.