Metal working

Claim 1

A MACHINE TOOL COMPRISING: AN ELONGATED BED; A HEAD STOCK CONNECTED WITH SAID BED AND HAVING MEANS FOR ROTATABLY MOUNTING A SPINDLE FOR SUPPORTING A BLANK TO BE WORKED; A CARRIAGE SLIDABLY MOUNTED ON SAID BED FOR MOVEMENT IN A DIRECTION GENERALLY PARALLEL TO THE ROTATIONAL AXIS OF SAID SPINDLE; FIRST FLUID PRESSURE MEANS INCLUDING A HYDRAULIC MOTOR AND A HYDRAULIC PUMP MOUNTED ON SAID CARRIAGE FOR MOVING SAID CARRIAGE ALONG SAID BED DURING THE WORKING OPERATION; TWO ROLLER SUPPORTS EACH SLIDABLY MOUNTED ON SAID CARRIAGE RESPECTIVELY ON OPPOSITE SIDES OF SAID AXIS FOR MOVEMENT IN OPPOSITE DIRECTIONS GENERALLY TRANSVERSE SAID AXIS; A PAIR OF ROLLERS RESPECTIVELY MOUNTED ON SAID SUPPORTS FOR ENGAGING AND WORKING SAID BLANK; SECOND FLUID PRESSURE MEANS INCLUDING A HYDRAULIC MOTOR AND A HYDRAULIC PUMP MOUNTED ON SAID CARRIAGE FOR MOVING SAID ROLLER SUPPORTS; A TEMPLET SUPPORT SLIDABLY MOUNTED ON SAID BED FOR MOVEMENT IN A DIRECTION GENERALLY PARALLEL SAID AXIS; MEANS FORMING A YIELDING INTERCONNECTION BETWEEN SAID TEMPLET SUPPORT AND SAID CARRIAGE AND PROVIDING ALTERNATIVELY FOR THE TEMPLET SUPPORT TO BE MOVABLE WITH SAID CARRIAGE OR NONMOVABLE WHILE SAID CARRIAGE IS MOVING DURING A WORKING OPERATION; SAID LAST MENTIONED MEANS COMPRISING MEANS CONNECTED WITH SAID BED TO ENGAGE SAID TEMPLATE SUPPORT AND RENDER THE SAME NON-MOVABLE WHEN SAID ROLLERS ENGAGE SAID BLANK AND MAINTAIN THE SUPPORT NON-MOVABLE DURING THE WORKING OPERATION; A SUPPORT MOUNTED ON SAID CARRIAGE TO POSITION A BLANK TO BE WORKED WITH RESPECT TO SAID AXIS; THIRD FLUID PRESSURE MEANS MOUNTED ON SAID CARRIAGE FOR OPERATING LAST SAID SUPPORT; A ROTATABLE TAIL STOCK FOR ENGAGING A BLANK ON THE SPINDLE AND MOUNTED ON SAID CARRIAGE; MEANS FORMING A YIELDING CONNECTION BETWEEN SAID TAILSTOCK AND SAID CARRIAGE AND PROVIDING ALTERNATIVELY FOR THE TAILSTOCK TO BE MOVABLE WITH THE CARRIAGE OR TO REMAIN IN ENGAGEMENT WITH THE BLANK WHILE THE CARRIAGE MOVES DURING THE WORKING OPERATION; AND A FLUID PRESSURE RESERVOIR MOUNTED ON SAID CARRIAGE AND HAVING CONNECTIONS WITH EACH OF SAID FLUID PRESSURE MEANS.