Apparatus for grinding rails

Claim 1

A DEVICE FOR GRINDING RAIL STRUCTURES AND THE LIKE, COMPRISING A FRAME, ROLLER MEANS ON SAID FRAME ADAPTED TO RIDE OVER A RAIL STRUCTURE, A GRINDING MACHINE CARRIED ON SAID FRAME INCLUDING A ROTARY DISC EXTENDING DOWNWARDLY FROM SAID FRAME AND ROTATABLY SUPPORTED IN A POSITION FOR OPERATING ON THE AREA OF THE RAIL BETWEEN THE HEAD AND FOOT PORTION THEREOF, MEANS FOR SHIFTING THE GRINDING MACHINE WITH THE DISC LATERALLY, AND MEANS FOR ADJUSTING SAID GRINDING MACHINE WITH SAID DISC VERTICALLY, SAID MEANS FOR SHIFTING SAID GRINDING MACHINE LATERALLY INCLUDING A YOKE FORMED ON SAID FRAME, SAID GRINDING MACHINE BEING MOUNTED IN SAID YOKE FOR LATERAL DISPLACEMENT THEREWITH, MEANS ON SAID FRAME FOR GUIDING SAID YOKE BACK AND FORTH LATERALLY, AND A CRANK ARM PIVOTALLY CONNECTED TO SAID FRAME HAVING A PORTION CONNECTED TO SAID YOKE WHEREBY ROCKING OF SAID CRANK ARM IS EFFECTIVE TO SHIFT SAID YOKE WITH SAID MACHINE.