Abstract: The present invention relates to a general synthesis for producing secondaryalkoxy-1-alkenes in commercial quantities in good yields by reacting cyclic and acyclic ketones and the corresponding alcohol with a secondary alkyl orthoformate ester in the presence of an acid catalyst, a Lewis acid, ferric chloride being preferred, and recovering the produce as a liquid of high purity.

Abstract: A pipe vibration reducer is provided by one or more resilient cantilever bar members each secured at its inner end to a clamp assembly mounted on a pipe and extending laterally from a vertical plane through the pipe. The outer end of the cantilever bar member mounts a pipe vibration dynamic mass. In one embodiment each of a pair of cantilever bar members mounts a dynamic mass of the same of different weight. In another embodiment a single dynamic mass extends between and is secured to a pair of cantilever bar members. In still another embodiment a pair of cantilever bar members is secured to a clamp assembly for pivotal adjustment to various positions laterally of a vertical plane through a pipe to which the clamp assembly is mounted.

Abstract: This invention relates to a pipe-vibration reducer device arranged to be fixedly mounted at any desired radial position about a pipe, so as to reduce abnormal or resonant pipe vibrations to acceptable levels by having its natural frequency tuned to the frequency of the vibrating pipe. The device includes a mounting bracket defined by first and second clamp members, a dynamic mass being supported in a pair of carriage members which are slidably supported by compression springs within guide-bar members secured to the first clamp member.