Abstract: This invention relates to a self-contained precast modular burial crypt that is quickly and easily assembled at any situs. Further, the burial crypt is provided with an improved sealing arrangement to maintain an airtight and secure fit between the various modular units.

Abstract: A plague board comprises a solid polyurethane core enclosed by a high grade wood which forms all exterior surfaces thereof. A wooden frame is secured between the peripheries of a pair of spaced panels formed of flat sheets of veneer. The polyurethane core fills the interior of the frame between the veneer panels and is firmly bonded to the wooden frame and veneer. A method disclosed for constructing the plaque board and other like articles comprises inserting a measured amount of liquid polyurethane foam in the interior space between the attached frame and panels and pressing the opposite veneer panels inwardly as the polyurethane expands outwardly to solidify and become bonded to the frame and panels.

Abstract: A mechanism is presented by means of which the uppermost sheet from a stack of sheets may be dispensed without excessive friction of the sheets against each other.It may advantageously be incorporated in a dispenser for radiographic film which may be installed in daylight conditions. In order to perform a loading cycle automatically, auxiliary expedients are described, particularly concerning the opening and closing of the radiographic cassette.