Abstract: Means for releasably holding a window or screen in a door frame. The door frame has a continuous flange around an opening to support one side of a window or screen and a plurality of recesses adjacent the opening. A slidable tab within each recess has an elongated slot therethrough and at least two runners on the underside upon which to slide the tab to and from an extended position within the recess. A threaded means passes through the elongated slot in the tab to a threaded hole in the base of the recess to releasably hold the tab in a selected fixed position. The tabs in extended position securely but releasably hold the window or screen against the flange on the frame.

Abstract: A plastic storm door comprising a unitary molded plastic panel having an integral solid skin. The panel has a channel along its peripheral edge having integrally molded load-transferring ribs diagonally traversing the width thereof. Hinges are secured along a vertical edge of the panel by attachment to tapping plates mounted within the channel between and bridging two of the load-transferring ribs. The ribs act to uniformly distribute the loading forces on the hinges throughout the panel. Elongated plastic strips enclose the channel to form an insulating airspace therein.

Abstract: A manually operated applicator for distributing controlled quantities of particulate fertilizer or pesticide to container-grown ornamentals. The applicator comprises a hopper, an elongated discharge conduit extending below the hopper and a control located in the upper part of the discharge conduit for precise control of the quantity of particulate material distributed from the applicator. The control comprises one or more rotors horizontally mounted for rotation within a cylindrical housing, the rotors containing cavities therein for metering the amount of particulate material. The rotor is spaced from the housing to form an annular clearance to permit a small but controlled quantity of particulate material to enter the clearance. The rotor is mounted on a shaft journaled on bearings at both ends, one of the bearings being axially adjustable to accommodate varying numbers of rotors or rotors of varying axial thickness. The rotors are manually cranked by a suitable arm attached to the shaft.

Abstract: A nitrogen containing slow release glass fertilizer is prepared by co-melting phosphorus oxynitride with phosphorus pentoxide, an alkaline metal oxide and an oxide of a metal of Group II or Group III of the periodic table.

Abstract: A biologically active slow release medium consisting of vitreous matrix including one or more water soluble biologically active constituents together with phosphorus pentoxide which vitreous matrix may include one or more dispersed phases, the vitreous matrix having a slow rate of solution in water, such that when the medium is immersed in water biologically active constituents are slowly released into solution. Nitrogen releasing material is also incorporated into the vitreous (glass) matrix, using an inorganic material that can be added to a melt of the glass to be formed.

Abstract: The evolution of formaldehyde from shaped cellulose acetayte articles containing methylolated melamine or guanamine polymers is reduced by adding to the solutions from which the cellulose acetate article is regenerated, from 1 to 20% by weight based on the weight of the methylolated polymer of a cyclic urea compound.

Abstract: The tendency of cellulose acetate solutions, containing methylolated polymers of melamine or guanamine, to prepolymerize or gel is reduced by the addition to the solutions of an amine oxide. The amine oxide also acts to reduce the viscosity of the cellulose acetate solutions.

Abstract: An arrangement is shown for displaying and dispensing articles together with apparatus and a method for assembling the articles for display. Included is a plurality of rods mounted by first ends on boards to serve as brackets, with second ends below the first and pointing away from the boards. The rods incorporate detents to prevent packages from slipping off. Mounting members are used to support pre-prepared assemblages of packages and the assemblages are slid-off the mounting means onto the brackets to prepare displays.

Abstract: A yeast leavened dough product, such as an English muffin, having a high and uniform level of porosity contains as an additive therefor, for each 100 parts by weight of flour, from about 0.20 to 5.0 parts by weight of rice flour and from about 0.06 to 1.0 part by weight of fumaric acid.

Abstract: A process for the selective control of tall fescue and perennial ryegrass in Kentucky bluegrass, fine fescue or bentgrass turf comprising treating said turf with a compound selected from the group consisting of (a) 4-(4'-chlorophenoxy)-phenoxy-d-propionic-isobutylester and (b) methyl 2-[4-(2,4-dichlorophenoxy)-phenoxy]propanoate, in an amount effective to kill said tall fescue or perennial ryegrass but insufficient to damage said turf.

Abstract: A process for removing sulfur dioxide and other contaminants from a hot waste gas stream in which the waste gas stream is cooled to a temperature below 100.degree.F and then passed in sequence through two separate absorption zones utilizing as the absorbent a recirculated aqueous solution of ammonium sulfite-bisulfite salts. Heat is continuously withdrawn from the recirculated salt solution in each zone. The absorbent solution in the first zone has an initial pH of from 6 to 7.2 and a salt concentration of from 1 to 20% by weight. The absorbent solution in the second zone has an initial pH of from 5.2 to 6.5 and a salt concentration, lower than said first zone of, from 0.1 to 5% by weight. The process provides for the efficient absorption and substantial removal of SO.sub.2, SO.sub.3 and particulate contaminants and for the economic recovery and use of heat from stack gases of a variety of industrial and commercial operations.

Abstract: A gas-tight chemical reaction vessel for the chemical analysis of an intractable material such as glass. The reaction vessel comprises a body having at least two concentric chambers, one of which is adapted to contain a reagent, at least one other of which is adapted to receive a sample cap which in turn is adapted to receive a sample. The reaction vessel has a sealing member for sealing the chambers of the body and a cap for securing the sealing member against the body. The body, sealing member and sample cap are made of a material, desirably polytetrafluoroethylene, which is chemically inert to the reagents.

Abstract: Polyphenolic extracts of coniferous tree barks and condensed tannins from wood such as quebracho extracts are etherified by reaction at elevated temperature in the presence of an alkaline catalyst with an olefin containing a double bond-activated carbonyl group having the structure ##EQU1## A particularly effective olefin is acrolein. The reaction products are produced in high yield, are water or alkali soluble and act among other uses as good dispersants.

Abstract: Water-soluble metal complexes of sodium mannoheptonate in which the metal is an aluminum, iron or chromium trivalent ion. The water-soluble complexes are produced by reacting a water slurry of sodium mannoheptonate with a salt of the trivalent metal. The reaction products are useful for inhibiting the swelling and dispersion of clays and, in the case of the iron complex, as anti-chlorotic agents for the treatment of trees and plants.