Abstract: A machine to insert strips in expansion joints and concrete surfaces has features to prevent placing the strip in the joint while stretched. The machine includes the frame mounted on wheels. A supply reel mounted to the frame has a quantity of the strip wound about it. An insertion disk is rotatably mounted to the frame and positioned in the groove to push the strip into the groove. A pair of driven pinch rollers pull the strip from the roller. The drive mechanism for the rollers rotates the rollers at a speed selected to eliminate any tension in the strip between the insertion disk and pinch rollers.

Abstract: A machine for inserting a strip into a concrete expansion joint has features to raise and lower insertion disks. The machine has a frame mounted on wheels. The insertion disks are mounted to the same axle as the wheels. The axles are eccentric, having a central offset portion. A control disk mounted to the outside of the axle, rotates the axle to raise and lower the insertion disk. A pair of linkage bars connect the control disk to an upper control disk which is operated by an operator. Another pair of linkage bars connect the rear axle to the front axle for movement in unison.