Hair tonic application/scalp patting instrument

Abstract From the Canadian patent

An instrument for conducting hair-tonic application and patting of the scalp, comprising: a hair-tonic reservoir serving also as a main body of a hair-tonic applicator and a scalp-patting brush; a valve unit having a valve stem, mounted in a front opening of the reservoir, a front portion of which stem extends in a cavity of a sleeve-like front shaft and being provided with a flange-like stopper in its front end and a weight in its part extending in the cavity, which weight is axially movably mounted on the valve stem; and the sleeve-like front shaft having the cavity in its middle portion a brush in its front portion and an engaging means in its rear portion, through which engaging means …