Abstract: A method for forming a constant geometry and non-turbulent stream inducing pouring spout in the rim portion of an annular side-walled vessel. The method comprises the steps of: a) positioning the vessel within a clamp possessing a groove whose centerline forms a 90.degree. angle with the annular side wall of the vessel when the clamp is in place; b) placing inside the vessel a center plug possessing a radially extending groove whose centerline forms a 90.degree. angle with the annular side wall when the center plug is in place; c) aligning the centerlines of the grooves of the clamp and the center plug to form a straight line travel path; d) placing a pour spout former in the center plug portion's groove and causing the former to travel along the travel path and into contact with the rim portion of the vessel; and, e) further causing the former to travel along the travel path to yieldably deform the rim portion of the annular wall into the desired shape pouring spout.

Abstract: This invention relates to a fiberizable glass compositions consisting essentially, expressed in terms of mole percent on the oxide basis, of at least 65% total of 5-55% ZnO, 28-40% P.sub.2 O.sub.5, 0.3-5% MoO.sub.3 and 10-35% R.sub.2 O, wherein R.sub.2 O consists of at least two alkali metal oxides in the indicated proportions selected from the group consisting of 0-25% Li.sub.2 O, 0-25% Na.sub.2 O, and 0-25% K.sub.2 O, and up to 35% total of optional ingredients in the indicated proportions selected from the group consisting of 0-10% Al.sub.2 O.sub.3, 0-15% B.sub.2 O.sub.3, 0-15% Al.sub.2 O.sub.3 +B.sub.2 O.sub.3, 0-15% Cu.sub.2 O, 0-25% Sb.sub.2 O.sub.3 0-5% F, 0-35% PbO, 0-35% SnO, 0-35% PbO+SnO, 0-5% ZrO.sub.2, 0-4% SiO.sub.2, 0-20% MgO+CaO+SrO+BaO+MnO, 0-20% MgO, 0-20% CaO, 0-20% SrO, 0-20% BaO and 0-10% MnO, and 0-5% rare earth metal oxide.

Abstract: This method is directed at a method for making selectively sculptured lithium silicate crystal-containing glass articles. A photonucleable, glass body is selectively exposed to short wave radiation and then heat treated to cause the development of crystals in those areas of the glass body which had been exposed to shortwave radiation. Those crystal-containing areas are then removed by acid etching and the resulting sculptured glass articles are thereafter exposed to short wave radiation and subsequently heat treated to obtain a degree of crystallization.The inventive method further comprises an improvement step of fabricating glass articles that result in crystal-containing glass articles with smaller intermediate dimensions than the desired final dimensions and subjecting the crystal-containing glass articles to an ion exchange process which exchanges potassium ions for sodium and/or lithium ions at a temperature of about at least 500.degree. C.