Instruments for indicating the "going" of racecourses and the like

Claim 1

AN INSTRUMENT FOR INDICATING THE RELATIVE SOFTNESS AND TEXTURE OF THE GROUND SURFACE, WHEREIN A FREE FALLING MASS CAUSES ENERGIZATION OF RESILIENT MEANS, THE FREE FALLING MASS BEING SEQUENTIALLY REBOUNDED BY THE RESILIENT MEANS, THE LATTER RESILIENT MEANS BEING IN GROUND ENGAGING CONTACT AND THE TERMINUS OF REBOUND BEING MEASURED, SAID INSTRUMENT WITH COMPRISES: (A) GROUND IMPACT CONTACTING MEANS ADAPTED TO REST ON AN EXPOSED LAYER COMPRISING THE SURFACE OF THE GROUND; (B) GUIDE MEANS IN VERTICAL EXTENSION OF SAID CONTACTING MEANS; (C) A MOVABLE MASS, SLIDABLY ENGAGING THE GUIDE MEANS, SAID MOVABLE MASS BEING HELD ABOVE THE GROUND IMPACT CONTACING MEANS FOR FREE GRAVITATIONAL FALL IN THE DIRECTION OF THE GROUND IMPACT CONTACTING MEANS, (D) RESILIENT MEANS WOUND AROUND SAID GUIDE MEANS AND INTERPOSED BETWEEN SAID MOVABLE MASS AND SAID GROUND IMPACT CONTACTING MEANS AND IN THE PATH OF GROUND IMPACT CONTACTING MEANS AND IN THE PATH OF THE MOVABLE MASS BUT SPACED THEREFROM, SAID RESILIENT MEANS REBOUNDING THE MASS UPON ENERGIZATION OF THE RESILIENT MEANS BY THE FALLING MASS UPON ITS FALLING IN THE DIRECTION OF THE GROUND IMPACT CONTACTING MEANS; (E) A CALIBRATED SCALE IN PARALLEL RELATIONSHIP WITH THE VERTICAL GUIDE MEANS TO RECORD THE DISTANCE OF REBOUND TRAVEL OF THE MOVABLE MASS, THEREBY PROVIDING AN INDICATION OF THE RELATIVE SOFTNESS AND TEXTURE OF THE GROUND.