Rensselaer Republican, Volume 28, Number 7, Rensselaer, Jasper County, 17 October 1895 — A Useful Invention. [ARTICLE]

A Useful Invention.

The latest medical invention Is a small but Intricate machine not more than an inch and a half wide and of the same height for the purpose of registering the pulsations of the heart. The inventor of the new register, which Is looked upon by medical men who have examined it find seen it work as marvelous, is a German clockinaker residing In the upper portion of the city. The pulsations are registered on a small slip of paper which moves through two wheels In a manner similar to that of a typewriter. As the blood flows from the heart a delicate metallic pen, very sharp and filled with Ink, makes an upward stroke, the throb, accompanied by the flow of blood towards the heart causing the needle to make a downward stroke.—Philadelphia Call.