Abstract: Photomasks used for sandblasting and sandcarving may be readily produced by the user of the photomask in a simple and relatively inexpensive manner. The user places a stencil and print positive in a manual clamping structure --between a pivoted glass cover and foam covered base and exposes them to about 60-90 seconds of ultraviolet light from a 500 watt bulb. After removing the print positive, the stencil is then placed on a support surface above a tank, and reciprocating spray heads direct 100 psi, 90 degrees F. water onto the stencil to remove uncured emulsion. A combination pump/heater within the tank recirculates tank water to the spray heads. The stencil is then hand blotted, e.g. using a lamb's wool roller, and then dried in a microwave oven at low power for about eight minutes. Then it is placed on newspaper, and hat activated liquid adhesive is placed in a pool at one end of it and manually drawn over it with a draw bar, to produce the final photomask.

Abstract: Uncured emulsion is effectively washed from a stencil in the production of photomasks by mounting a drum rotatable about a horizontal axis within a portable cabinet. The drum is driven by a small (e.g. variable speed 1/16 HP) electric motor and spins at about 50-100 rpm. Water is sprayed onto the stencil mounted on the drum at about 80 psi by 4-10 V-jet nozzles. Liquid running off the stencil is collected by a catch basin mounted just below the drum, and passes through a drain pipe with strainer into a heat insulated holding tank with an electric resistance heating element, and is recirculated from the tank to the spray nozzles-by a high pressure pump. The pump and motor are controlled by a timer, and after completion of the washing cycle the stencil is removed from the cabinet.

Abstract: A cremation urn has a front wall with human readable indicia (such as the name of a deceased human or pet) formed integrally with the front wall, the front wall actually being a component of the urn. The indicia may be relief indicia, as formed by sand blasting decorative stone such as granite or marble, or raised indicia, such as formed with a bronze casting. Side walls with grooves for receiving the front wall side edges, and edges of a common top, rear, and partial bottom piece of malleable material (e.g. brass), are held together with a number of bolts and cooperating T-nuts, with the bolt holes covered with plugs, or by hooks and turnbuckles. The bottom includes a removable plate, which allows access to the interior volume so that ashes in a bag may be readily inserted into, and removed from, the container.