Abstract: Unauthorized removal of the cap from a standpipe, such as a fire line standpipe, is prevented through use of a bent metal bar and a nipple formed at the center of the standpipe cap. The bar has an opening to accept the nipple extending from the standpipe cap, and a slot to receive a metal pin which prevents movement of the standpipe cap, rotation of the cap being prevented by additional means formed on the cap and bar. The bar can be so formed as to also prevent unauthorized removal of the handwheel of the valve which permits liquid flow through the standpipe opening.

Abstract: A pair of U-shaped members are affixed to each other in spaced parallel inverted position. Each of the members has a pair of spaced parallel arms joined by a head perpendicular to the arms. An antenna affixing device links the members for supporting a TV antenna in upright position. A fastening device on the members affixes the members in inverse position on a parapet.