Evening Republican, Volume 21, Number 243, Rensselaer, Jasper County, 29 October 1917 — AMONG THE INVENTORS [ARTICLE]

AMONG THE INVENTORS

A new camera-carrying case has a compartment for additional films. A Kansas inventor has devised heels made mainly of coiled springs covered with flexible leather. Polishing furniture by machine Instead of by hand Is made possible by a recent British invention. Concrete may be made to resemble granite so closely by the addition of powdered mica as almost to deceive experts. To keep men who use ladders a great deal from slipping an Inventor has designed roughened metal plates to be worn on shoes. A French invention to warn aji aviator when he is deviating from his intended course consists of a form of camera obscura. An English lighting engineer proposes to Illuminate cities by the reflection of lights thrown against buildings, in order to eliminate glare. A Californian has invented an appliance to tell when orchestra lnstru-_ ments are in tune, which resembles a tuning fork on a large scale.