Concrete vibrator and former

Claim 1

IN A CONCRETE FORMING MACHINE OF THE NATURE AFORESAID, FOR THE FORMATION OF HOLLOW ELONGATE PRODUCTS, HAVING LONGITUDINALLY EXTENDING CENTRAL CHAMBERS, THE COMBINATION OF A FORMING HEAD HAVING SIDE MEMBERS STRUCTURALLY COMMUNICATING WITH EACH OTHER, THE LOWER PORTION THEREOF BEING ADAPTED TO FORM THE SIDES OF SAID PRODUCT; A VIBRATOR SUPPORT COMMUNICATING BETWEEN SAID SIDES CARRYING A PLURALITY OF ELONGATE, PIPE-LIKE VIBRATOR TUBES, HAVING THEIR AXES PARALLEL TO THE LONGER DIMENSION OF SAID SIDES, WITH PHYSICAL CONSTANTS SUCH THAT THE NATURAL PERIOD OF VIBRATION THEREOF IS SUBSTANTIALLY AT A NODAL POINT AT THE FORWARD PORTION OF SAID VIBRATING TUBES AND SUBSTANTIALLY AT MAXIMUM AMPLITUDE NEAR THE REARWARD PORTION THEREOF; VIBRATING MEANS IN SAID TUBES AND A POWER SOURCE TO CAUSE VIBRATION THEREIN; AN ELONGATE FLAT SHEET-LIKE PALLET ASSOCIATED WITH SAID FORMING HEAD SO AS TO SUPPORT THE PRODUCT FORMED THEREBY; AND MEANS OF RELATIVELY MOVING SAID PALLET AND SAID FORMING HEAD PARALLEL TO EACH OTHER SO THAT PRODUCT FORMED ON SAID PALLET IS CARRIED FROM SAID FORMING HEAD AS FORMED, WHEREIN SAID VIBRATING MEANS COMPRISES TWO SIMILAR MATING CYLINDRICAL SHELLLIKE BODY MEMBERS, HAVING MEANS OF ATTACHMENT TO EACH OTHER AND FORMING A CYLINDRICAL CHAMBER THEREBETWEEN WHEN MATING, SAID MEMBERS CARRYING AXIALLY ALIGNED BEARINGS IN EACH OF THE OPPOSED END PORTIONS THEREOF, SAID BEARINGS BEING HELD IN POSITION BY BEARING CAPS FASTENED TO SAID BODY; A BALL BEARING CARRIED ABOUT THE CENTRAL INNER PERIPHERY OF SAID CHAMBER BY A CHANNEL THEREIN, SAID BEARING CARRYING ABOUT THE INNER RACE THEREOF AN ECCENTRIC WEIGHT FREE TO ROTATE THEREABOUT IN SAID CHAMBER; AND A CENTRAL DRIVING SHAFT SUPPORTED BY AFORESAID BEARINGS, HAVING DIAMETRICALLY OPPOSED, RADIALLY EXTENDING KEYS, RADIALLY, IMMEDIATELY INWARD FROM AFORESAID WEIGHT, ADAPTED TO CAUSE SAID WEIGHT TO ROTATE UPON ROTATION OF SAID SHAFT.