Abstract: A writing tool in which a core casing (3) or (3a) is inserted in an outer sleeve (2), and an end (6) of core casing (3) or (3a) can be projected out of the end of outer sleeve (2) by operating end (4a). End 6 of core casing (3) or (3a) can be withdrawn by reverse operation of the operating end (4a). A revolution-to-linear movement conversion arrangement for converting a revolutional movement of an operating end (4a) to a axial movement between a core casing (3) or (3a) and an outer sleeve (2) is provided. A retracting spring (5) between the outer sleeve (2) and the core casing (3) or (3a) and the operating end (4a) projecting out of a rear end of the outer sleeve (2) can be forcibly operated against the force of a retracting spring (5).

Abstract: A self regulating heating device for a mirror is disclosed including a substrate having an electrical buss system deposited on one surface including a plurality of interdigitated electrodes and two buss bars. Stripes of positive temperature coefficient resistive material are printed perpendicularly over the buss system to form a plurality of heater areas and exposed substrate areas. A first adhesive layer is deposited over the resistive layer and adheres to the exposed areas of the substrate. An electrical barrier layer is secured to the first adhesive layer and a removable protective covering is secured by the second adhesive layer. The buss bars are tapered such that the power density at any point along their length is substantially equal to the average power density of the heater areas.

Abstract: A process for preparing a waterless lithographic printing master is provided. A suitable substrate, which is preferably ink accepting is first coated with a curable silicone which is curable at low or elevated temperature and a second different curable silicone deposited on said first silicone which can be preferentially cured at a lower temperature without curing the first silicone and which second silicone contains, in addition to its own catalyst, an amount of high temperature curing catalyst sufficient to cure the underlying silicone. The surface silicone is then preferentially cured at least on its surface to render it nontacky, but not the underlying silicone.

Abstract: Vulcanizable ethylene polymer based compositions which are susceptible to scorching when processed at elevated temperatures, prior to vulcanization, in the presence of dicumyl peroxide, are protected against such scorching by the incorporation therein of cumene hydroperoxide and/or tertiary butyl hydroperoxide.