Abstract: A rapid-flow washer for photographic sheet material, such as prints or films, in the form of a tank having a fluid inlet near the bottom including an aerator for introducing a mixture of air bubbles and water into a horizontal distribution manifold at the bottom of the tank, the top of said manifold being a horizontal septum perforated with small perforations, and having also parallel rows of larger perforations for receiving the ends of removable wire sheet separators to thus form parallel rows of such separators spaced far enough apart in the rows to permit manual insertion and removal of single sheets. A vertical septum near one end of the washer provides an overflow compartment at the bottom of which is an outlet nozzle.

Abstract: Large-scale cryogenic tanks such as for L.N.G. are supported on spaced-apart wooden bearer members which are part of the outer insulation. The weight of the loaded tank causes the floor of the tank to deflect on each side of the bearer members so that the loading increases to a degree that sometimes crushes the edges of the bearer members. Means are described for obviating this effect by inserts of resilient material extending inwardly from the sides of the bearer members, permitting sufficient deflection of the top edges of the bearer members to spread the load more uniformly over the bearer member.

Abstract: A swept-frequency VSWR measurement system for slotted lines is disclosed in which the measurement values are rapidly produced as a graph of VSWR versus frequency over a range of 2-18 GHz, in which the VSWR is given directly by the height of the ordinate at any frequency without requiring subtraction of two values derived from graph measurements as previously done. In addition, a "slope" correction is continuously made for errors introduced by physical imperfections of the slotted line, simultaneously with the taking of the swept frequency measurement.

Abstract: A spool or drum for holding flexible linear elements, such as cable, hose or long lengths of extruded plastic, is made up of three flat pieces of corrugated cardboard without glue or staples, one piece being the cylindrical body of the spool which is made by rolling up a cardboard sheet formed with suitable projections spaced along its edges, the other two pieces being disk-shaped with suitable spaced perforations to receive the spaced projections so as to hold the three elements securely together in the form of a spool.

Abstract: An improved fluid-dispensing valve device for a bubble-making toy such as described in U.S. Pat. No. 3,745,693. A dispensing valve is provided between a fluid reservoir of the toy and a bubble-making hollow stem unit such that the fluid stream path is broken up into a plurality of tiny separate paths which are then turned outward toward the hollow stem so as to provide a continuous and uniform flow of fluid to the bubble-making stem unit.

Abstract: A method of making pile weatherstripping of the type having a strip of velvet-like pile material reinforced by one or more longitudinally-extending walls of plastic imbedded in or alongside the pile material, by forming such walls of the base sheeting which supports and retains the pile material. The pile material is applied in spaced parallel strips on the base sheeting, which is then cut between the strips and bare portions of the sheeting, and folded and adhered together to form the reinforcing walls, which also add to the weathersealing effectiveness of the assembly.