An application was recently made for a patent on an improvement to render police-mens' batons or clubs more efficient, and prevent those using them from teing disarmed by rioters. This application has been rejected by the Commissioner, and a partial report of his decision was telegraphed to and published in our city papers of Friday, last week. The decision came too late for us to present our views on the subject in this number, but we will do so in our next. We will only state at present that the report has been the means of propagating through the daily press the most ridiculous and erroneous notions respecting this invention.