Abstract: A filter comprising a flat sheet, a corrugated sheet adhered in faced relationship to said flat sheet, a first array of parallel spaced orifices formed in said flat sheet, and a second array of parallel spaced orifices formed in said corrugated sheet, orifices in said first array being disposed laterally in spaced relationship from orifices in said second array, orifices in said first array communicating with orifices in said second array through corrugations in said corrugated sheet.A process for separating suspended particles from a fluid using the foregoing filter is disclosed. Use of the foregoing filter in a spray booth is also disclosed.

Abstract: An improvement in and pertaining to cranes for stripping and/or handling cast metal ingots. The improvement is disclosed in the illustrative environment of a crane capable of performing both functions and operations with big-end-down ingots and molds. The improvement is embodied in a horizontally disposed component of a vertical, crane-suspended, ingot working mechanism. Said component serves as a shock absorber and dampener during a stripping operation, and serves as a resilient energy reservoir in aid of an ingot handling operation. Said component takes a horizontal drum-shaped form with centrally apertured, resilient, spring tempered steel discs disposed like the heads of a drum normal to said mechanism wherein, however, the inner peripheries of said apertures engage parts of the mechanism between which there is relative vertical motion in one direction incident to stripping the ingot from the mold, and in the opposite direction when gripping the ingot to handle it.