Concrete float adjusting device

摘要

A concrete float adjusting device is disclosed which enables a user to adjust the angle of a float coupled to the adjusting device so that the float does not gouge into the unset surface of freshly poured concrete. The adjusting device includes a base coupled to the float, and a shaft rotatable in a pivot bearing pivotally coupled to the base. The shaft is formed with a pair of spiral slots which define a path of travel for a pair of upper pivot shafts projecting into the slots and guiding a protective sleeve and an integral follower sleeve together for sliding movement on the shaft. A pair of shiftable link arms extend between the upper pivot shafts and a pair of lower pivot shafts pivotally coupling the base to the link arms. Rotation of the shaft causes linear sliding movement of the protective sleeve and follower sleeve along the shaft. This motion is transmitted by the shifting link arms to the base so as to change the angle of the float relative to the shaft.