Raisable side guides for apparatus for paying out an insulation support sheet

摘要

An apparatus for providing a roof structure of the type having a plurality of purlins spaced apart from one another in a parallel arrangement, is disclosed. A carriage moves in a first direction along the length of the purlins and pays out a support sheet for support of insulation material as the carriage travels along the length of the purlins. The support sheet depends from the top portion of adjacent purlins. At least one guide member guides the carriage along the length of the purlins and prevents the carriage from moving in a direction lateral to the first direction when the guide member is in a first position. The guide member is pivotally mounted on the carriage so that the guide member can be elevated into a second position to avoid obstructions encountered as the carriage moves along the length of the purlins. The guide member includes a movable arm which is pivotally mounted on the carriage and has a roller for rolling against a purlin while the guide member is in the first position. The guide member also includes a spring having two ends, with one of the ends being engaged with the movable arm and the other end engaged with the carriage. A spring biases the movable arm towards the first position and a handle is attached to the movable arm for manually elevating the guide member to the second position.