Abstract: The device facilitates inserting a rigid liner in a helmet shell which has an opening narrower than the liner and prevents damaging scratches on the shells interior finish. The device has a bowl-shaped based to hold the helmet shell in an inverted position beneath a hinged frame from which hangs one or more slip sheets. The slip sheets are made of smooth, flexible material which hangs from the frame to form a partial, temporary lining of the helmet. The rigid liner is shoved down into position within the helmet shell while the slip sheets act similarly to a shoehorn permitting the liner to slip into place without damaging the inside surface of the shell. The frame, including the assembled helmet, is then raised to an upper position and latched. The assembled helmet is then pulled forward freeing it from the slip sheets which remain attached to the frame ready to use in the next assembly.

Abstract: A composite construction of a cylindrical tank with fabric covered end panels surrounded by a sheet metal circular frame, the longitudinal edges of the frame are formed inwardly engaging the edges of the tank while the lateral edges of the frame form a lapping joint with the exposed lateral edge shaped with an inward radius. Formed in the frame are a plurality of carrying strap supports, each of which includes a pair of slots cut in the frame having rounded ends.