Abstract: A lever device includes first and second levers coupled at a lever pivot. First end of a first bar is pivotally coupled to the first lever at a first lever-bar pivot. First end of a second bar is pivotally coupled to the second lever at a second lever-bar pivot. First tool is pivotally coupled to a distal end of the first lever at a first lever-tool pivot. Second end of the first tool is pivotally coupled to the second end of the second bar. Second tool is pivotally coupled to the second lever at a second lever-tool pivot and a second end of the lever is pivotally coupled to the second end of the second bar. First lever-bar pivot is between the lever pivot and a distal end of the first lever and the second lever-bar pivot is between the lever pivot and a distal end of the second lever.

Abstract: A lever device includes first and second levers coupled at a lever pivot. First end of a first bar is pivotally coupled to the first lever at a first lever-bar pivot. First end of a second bar is pivotally coupled to the second lever at a second lever-bar pivot. First tool is pivotally coupled to a distal end of the first lever at a first lever-tool pivot. Second end of the first tool is pivotally coupled to the second end of the second bar. Second tool is pivotally coupled to the second lever at a second lever-tool pivot and a second end of the lever is pivotally coupled to the second end of the second bar. First lever-bar pivot is between the lever pivot and a distal end of the first lever and the second lever-bar pivot is between the lever pivot and a distal end of the second lever.

Abstract: In an inductively heated pancake epitaxial reactor the reactant gases are fed vertically into a bell jar of reduced height via a plurality of coaxial centrally disposed flow passageways, one of which is outwardly flared to impart a radial component of velocity to one or more of the flows. The density, velocity and composition of the flow streams are separately controlled to control the deposition prameters. A composite R.F. inductive heater coil, made up of vertically stacked tubes, is contained within a purged housing. The turns of the heating coil are variably spaced to obtain a desired spatial distribution of power density coupled into the susceptor. A purged porous member of thermal insulation is disposed in between the R.F. heating coil and the pancake susceptor to reduce heat loss. The bell jar is sealed to its base plate by means of a vacuum pull-down sealing and lifting flange sealed to the bell jar by means of a purged O-ring.

Abstract: n-Propanol and t-amyl alcohol cannot be separated from each other by distillation because of the proximity of their boiling points. n-Propanol can be readily separated from t-amyl alcohol by using extractive distillation in which the extractive agent is a higher boiling organic compound or a mixture of two or more of these. Typical examples of effective agents are: methyl salicylate; benzyl benzoate and hexahydrophthalic anhydride; methyl salicylate, benzoic acid and hexahydrophthalic anhydride.