Surface treating device

Claim 1

IN A SURFACE PUNCTURING AND PENETRATING DEVICE, A CYLINDRICAL BARREL HAVING AN OPERATING END AND A PUNCTURE APPLICATION END; A TOP CLOSURE-BUSHING ATTACHED AT THE OPERATING END THEREOF; A BOTTOM CLOSURE-BUSHING ATTACHED AT THE OTHER AND APPLICATION END THEREOF; CO-AXIALLY POSITIONED WITHIN SAID BARREL AN AXIALLY LONGITUDINALLY MOVABLE SHAFT HAVING TWO SEPARABLE PARTS LONGITUDINALLY AXIALLY ALIGNED AND SO MOVABLE IN RELATION TO ONE ANOTHER; THE FIRST OF SAID SHAFT PARTS HAVING AN OPERATING END EXTENDING LONGITUDINALLY AXIALLY MOVABLY THROUGH THE TOP CLOSUREBUSHING; THE SECOND SEPARABLE SHAFT PART HAVING AT ITS OUTER END AN IMPACT-IMPARTING SHAFT EXTENDING LONGITUDINALLY AXIALLY MOVABLE THROUGH THE BOTTOM CLOSURE-BUSHING, WHEREBY THE OUTER END OF SAID IMPACT SHAFT STRIKINGLY CAN IMPART A BLOW TO A SUITABLE ELEMENT INTERPOSED IN THE PATH OF MOVEMENT OF SAID OUTER END OF SAID IMPACT SHAFT AND HOLDING OUTWARDLY EXTENDING PUNCTURING MEANS HAVING AN OUTWARDLY EXTENDABLE PUNCTURING END, TO CAUSE SAID OUTER PUNCTURING ENDS OF SAID PUNCTURING MEANS TO PUNCTURE AND PENETRATE A SURFACE LOCATED NEAR ENOUGH TO BE REACHED AND PENETRATED BY SAID OUTER ENDS FOLLOWING THE DELIVERY OF SAID BLOW TO SAID PUNCTURING MEANS; MEANS WITHIN AND INTERMEDIATE THE ENDS OF SAID BARREL FOR PROPELLING THE SECOND OF SAID SEPARABLE SHAFT PARTS TOWARD THE APPLICATION END OF SAID BARREL, AND RESTRAINING MEANS ENGAGEABLE THEREIN FOR ENGAGING SAID SECOND SHAFT PART TO RESTRAIN SAID SECOND SHAFT PART AGAINST SUCH MOVEMENT AS SAID FIRST SHAFT PART IS BEING SO MOVED; AND MEANS INTERMEDIATE THE ENDS OF THE BARREL FOR RELEASING SAID RESTRAINING MEANS WHILE SAID SECOND SHAFT PART IS STILL STATIONARY; AND WITHIN SAID BARREL, SAID PROPELLING MEANS ENGAGING WITH SAID SECOND SHAFT PART FOR PROPELLING IT LONGITUDINALLY AXIALLY TOWARD SAID APPLICATION END OF THE BARREL UPON WITHDRAWING SAID RESTRAINING MEANS THEREFOR THEREFROM; AND WITHIN SAID BARREL AND ENGAGING WITH SAID FIRST SHAFT PART, MEANS FOR LONGITUDINALLY AXIALLY RETURNING SAID FIRST SHAFT PART TO ABOUT ITS STARTING LOCATION DIRECTLY AFTER REMOVAL THEREFROM OF THE FORCE THAT DIRECTED IT TOWARD THE APPLICATION END, AND AFTER THE SECOND SHAFT PART WAS DIRECTED TOWARD SAID APPLICATION END; AND MEANS INTERCONNECTING SAID TWO SHAFT PARTS FOR DRAWING THE SECOND PART BACK INTO THE BOTTOM CLOSURE-BUSHING AS SAID FIRST SHAFT PART IS BEING DRAWN BACK TO ABOUT ITS STARTING LOCATION.