Abstract: A removable device for preventing air from drying the liquid of a spray can nozzle. A metal ring having a fibrous plug is pre-soaked in non-evaporative liquid. The plug surrounds and is in physical contact with the spray nozzle orifice to prevent air from entering the nozzle assembly.

Abstract: A vise jaw for attachment to a vise jaw support which includes a first plate for attachment to the vise jaw support in place of the standard vise jaw and having a plurality of vertically elongated openings formed therein and a second plate overlying the first plate and having a plurality of pins extending therefrom and engaging the openings in the first plate, a spring carried by the first plate and engaging at least one pin to urge the second plate to a normal uppermost position and a structure carried by the first plate and operable to engage one of the pins in an opening therein to urge the second plate downwardly when a work piece has been fastened in the vise.

Abstract: A multidirectional photographic compound stage having a base including a circular opening, a first carriage having rollers engaging the wall of the opening for rotary motion of the carriage, a second carriage having rollers for engaging parallel tracks on the first carriage for movement of the second carriage in one direction, a third carriage having rollers engaging parallel tracks on the second carriage for movement of the third carriage in a direction ninety degrees to the second carriage and a light transmitting operating surface carried by the third carriage.