Helmet eyeshield adjustor

Claim 1

THE COMBINATION WITH A HELMET, OF A TRACK SECURED TO THE FRONT OF THE HELMET CENTRALLY THEREOF AND EXTENDING VERTICALLY, THE TRACK HAVING A CENTRAL PORTION PROVIDED WITH A ROW OF LONGITUDINALLY SPACED HOLES, A TRANSPARENT EYESHIELD EXTENDING ACROSS THE TRACK AND HAVING A CENTRAL OPENING NEAR ITS UPPER EDGE, A SLIDE MOUNTED ON THE TRACK AND HAVING A STEM FITTING IN SAID EYESHIELD OPENING, A KNOB SECURED TO SAID STEM FOR MOVING THE SLIDE AND EYESHIELD ALONG THE TRACK, THE SLIDE HAVING A PASSAGE THERETHROUGH IN THE PLANE OF SAID ROW OF HOLES, A LOCKING PIN SLIDABLY DISPOSED IN SAID PASSAGE WITH ITS INNER END INSERTED IN ONE OF SAID HOLES AND ITS OUTER END PROJECTING FROM THE PASSAGE, THE KNOB BEING PROVIDED WITH A CIRCULAR RIB CONCENTRIC WITH THE PIN AND SPACED THEREFROM, A NORMALLY CONCAVE SNAP SPRING PROVIDED WITH A CENTRAL OPENING RECEIVING THE OUTER END OF THE PIN, THE SPRING EXTENDING ACROSS SAID RIB AND HAVING ITS CENTRAL PORTION OPERATIVELY CONNECTED WITH THE OUTER END OF THE PIN, AND A BUTTON SECURED TO THE OUTER EDGE OF THE SPRING FOR PUSHING SAID EDGE TOWARD THE EYESHIELD TO CAUSE SAID CENTRAL PORTION TO SNAP OUTWARD AND PULL THE PIN OUT OF A TRACK HOLE, THE SPRING BEING ADAPTED TO SNAP BACK WHEN THE BUTTON IS RELEASED.