The present invention relates to a novel braking mechanism for a rotatable core support for paving fabric which is held to a roll.
Paving fabric has been used as a laminate between asphalt coatings applied to vehicular surfaces. It has been found that plastic sheeting extends the life of the pavement by preventing reflex cracking.
Reference is made to U.S. Pat. No. 3,913,854 and my co-pending application Ser. No. 529,627 filed Sept. 6, 1983 which describes various apparatuses for laying the paving fabric. U.S. Pat. No. 3,913,854 describes a tensioning device which utilizes a non-rotatable spindle surrounded by a rotatable insert that fits within a fabric roll. A friction brake is applied between the spindle and the insert to prevent free spinning of the insert and control the unraveling or unwinding of the fabric from the roll. Although the device described in U.S. Pat. No. 3,913,854 is satisfactory in most cases the distance between opposing inserts on either end of the roll is only adjustable by moving an arm supporting the insert along a lateral bar connected to the vehicle.
A paving fabric roll support which not only controls the turning resistance of the portion contacting the roll but is adjustable laterally would be a great advance in the construction industry.