Abstract: A ducted cover grass collection system for a lawn mower includes a hopper with a front end having an inlet, a rear end having an outlet and an open upper end, a deflector hood located at the front end to partially cover the open upper end, and a lid covering the remainder of the open upper end, the lid having a duct open at a front end and having a rear end in communication with the outlet so that a flow of clippings and air is introduced through the inlet and projected generally horizontally toward the rear end of the hopper, so that the clippings settle to the bottom of the hopper, after which the air is directed back toward the deflector hood, through the duct and is discharged via the outlet. An air flow indicator located in the hopper lid pivots when the air flow in the duct decreases, signaling that the hopper is filled with clippings.

Abstract: A pulley construction, drive system utilizing the pulley construction and method of making the pulley construction are provided, the pulley construction being utilized with an endless drive belt and comprising a body member having a peripheral groove therein for receiving part of the belt therein and having a securing unit, and a hub member having a securing unit secured to the securing unit of the body member so as to hold the members in aligned assembled relation to rotate in unison, the hub member having structure for being interconnected to a shaft so that the pulley construction and the shaft will be adapted to rotate in unison, the securing units are so constructed and arranged that the securing unit of one of the members has a part thereof that is adapted to break away from the one member under a certain normal driving force of the belt when the shaft is prevented from rotating so as to permit relative rotational movement between the members while the securing units maintain the thus relatively rotatab

Abstract: A pulley construction, drive system utilizing the pulley construction and method of making the pulley construction are provided, the pulley construction being utilized with an endless drive belt and comprising a body member having a peripheral groove therein for receiving part of the belt therein and having a securing unit, and a hub member having a securing unit secured to the securing unit of the body member so as to hold the members in aligned assembled relation to rotate in unison, the hub member having structure for being interconnected to a shaft so that the pulley construction and the shaft will be adapted to rotate in unison, the securing units are so constructed and arranged that the securing unit of one of the members has as part thereof that is adapted to break away from the one member under a certain normal driving force of the belt when the shaft is prevented from rotating so as to permit relative rotational movement between the members while the securing units maintain the thus relatively rotata

Abstract: A novel compound having the formula: ##STR1## wherein: R is alkyl containing from 1 to 10 carbon atoms; andM is a monovalent cation, selected from the group consisting of alkali metal and ammonium, has been synthesized in high yield by hydrogenating the corresponding arylsulfonate in a solvent which simultaneously prevents hydration of the sulfonate group and hydrolysis of the ester functions. The compound is useful in preparing condensation polymers having ionic groups. In particular, these condensation polymers comprise additional polymerized copolymerizable dicarboxylic acids and diols, diamines or hydroxyamines, to yield polyesterionomers useful in dye imbibition photohardenable imaging materials for forming positive dye images.

Abstract: A novel compound having the formula: ##STR1## wherein: R is alkyl containing from 1 to 10 carbon atoms; andM is a monovalent cation, selected from the group consisting of alkali metal and ammonium, has been synthesized in high yield by hydrogenating the corresponding arylsulfonate in a solvent which simultaneously prevents hydration of the sulfonate group and hydrolysis of the ester functions. The compound is useful in preparing condensation polymers having ionic groups. In particular, these condensation polymers comprise additional polymerized copolymerizable dicarboxylic acids and diols, diamines or hydroxyamines, to yield polyesterionomers useful in dye imbibition photohardenable imaging materials for forming positive dye images.