Abstract: Enclosed is an improved snap-on heat insulating jacket for ducting and method uniquely designed for simplicity and ease of assembly. Resilient heat insulating material is laminated to a flexible sheet plastic main body provided with interlocking snap-on seam members positioned, when closed, for concealment by an external guard flap coated on its inwardly facing surface with pressure sensitive adhesive thereby to embrace the ducting with a cover having a substantially continuous smooth outer surface free of foreign matter collecting crevices and the like.

Abstract: Disclosed is an improved device for dispensing individual labels slightly adherent to a roll of tape in end-to-end relation. The tape issues from a one piece container via a passage underlying the container cover and through a tubular passage extending through a guard flange along the container sidewall beneath the cover flange whereby manipulation of the tape in dispensing a label cannot open the cover. Before entering the tubular passage the tape makes a sharp bend over a protruding lip on the top edge of the container sidewall which initiates and peels the leading label from the tape and presents the advance end for grasping between the operator's fingers.

Abstract: Disclosed is a device for closing a snaplock type seam having a pair of internestable interlocking V-shaped portions. The one piece closure device is assembled astride the V-shaped portions of the two seam members and functions to force these portions laterally into interlocked assembly as the device is advanced along the seam.