Hydraulically operated tamper

Claim 1

A TAMPER OF THE CHARACTER DEFINED COMPRISING A VERTICALLY ELONGATED HOUSING HAVING A LARGE UPPER END AND A REDUCED LOWER END, MEANS FOR SUPPORTING A MOTOR TO EXTEND ABOVE THE UPPER END OF THE HOUSING, SAID MOTOR HAVING A ROTATABLE SHAFT, AN ELONGATED RECIPROCATING MEMBER SLIDABLY MOUNTED IN THE LOWER END PORTION OF THE HOUSING AND PROJECTING THEREFROM DIRECTLY BELOW AND PARALLEL TO THE SHAFT TO THE MOTOR, A TEMPER HEAD AT THE LOWER END OF SAID MEMBER, AN ELONGATED BEARING SUPPORT FOR SAID MEMBER EXTENDING BEYOND THE REDUCED LOWER END OF SAID HOUSING, SAID SUPPORT COMPRISING A TUBE FIXED TO THE HOUSING, SAID MEMBER HAVING BEARINGS SPACED LONGITUDINALLY THEREOF, A DRIVE LINK PIVOTALLY COUPLED WITH THE UPPER END PORTION OF SAID MEMBER AND OPERATING ENTIRELY WITHIN THE HOUSING, A BEVELLED GEAR FREELY ROTATABLE ON A BEARING SUPPORT IN AND AT ONE SIDE PORTION OF THE HOUSING, A BEVELLED PINION DRIVEN BY SAID MOTOR SHAFT AND OPERATIVELY ENGAGING SAID BEVELLED GEAR, SAID BEVELLED GEAR HAVING A PIVOTAL SUPPORT PROJECTING FROM A SURFACE THEREOF, SAID LINK HAVING A HUB-TYPE BEARING MOUNTING ON SAID PIVOTAL SUPPORT, THE OTHER SIDE OF THE HOUSING BEING OPEN