Plural molds with common actuating means

A form assembly usable to make a pair of concrete pipes comprising:

• a first upright cylindrical jacket, a second upright cylindrical jacket located adjacent the first jacket, means connecting the first and second jackets to each other, each jacket having a cylindrical wall surrounding a pallet, an upright longitudinal slit allowing the wall to move to an expanded open position and to a contracted closed position, a first flange secured to the wall adjacent one side of the slit, a second flange secured to the wall adjacent the other side of the slit, first latch means mounted on the wall selectively operable to hold the wall in the closed position and to allow the wall to expand to the open position, said first latch means includes a first member secured to the first flange, a second member secured to the second flange, said second member engageable with the first flange when the wall is in the closed position, and means connecting the first member with the second member operable to move the first and second members relative to each other to selectively move the wall to its open and closed positions, second latch means mounted on the wall selectively operable to hold a pallet in the lower end of the wall and to release the pallet from said lower end of the wall, and common control means connected to the first and second latch means, said control means having a first position wherein the first latch means holds the walls in the closed position and the second latch means holds the pallet on the lower end of the wall, and a second position wherein the first latch means allows the wall to move to the open position and the second latch means releases the pallet, and means connecting the common control means of each jacket to concurrently operate all the control means of the jackets.

A form assembly usable to make a pair of concrete pipes comprising:

• a first upright cylindrical jacket, a second upright cylindrical jacket located adjacent the first jacket, means connecting the first and second jackets to each other, each jacket having a cylindrical wall surrounding a chamber, said wall having a lower end surrounding a pallet, an upright longitudinal slit allowing the wall to move to an expanded open position and to a contracted closed position, first latch means mounted on the wall selectively operable to hold the wall in the closed position and to allow the wall to expand to the open position, said first latch means including biasing means for moving the wall to the open position, second latch means mounted on the wall selectively operable to hold the pallet in the lower end of the wall and to release the pallet from said lower end of the wall, and common control means connected to the first and second latch means, said control means having a first position wherein the first latch means holds the walls in a closed position and the second latch means holds the pallet on the lower end of the wall, and a second position wherein the first latch means allows the wall to move to the open position and the second latch means releases the pallet, and means connecting the common control means of each jacket to concurrently operate all of the control means of the jackets.