Abstract: Method and apparatus for roll forming and marking sheet metal. Sheet metal is embossed with an identifying relief pattern as the sheet metal moves through the nip between first and second forming rollers of a roll-forming machine. More particularly, sheet metal is embossed with first and second embossing rollers juxtaposed so that there is a nip therebetween. Sheet metal moves through the nip between the first and second embossing rollers as the sheet metal moves through the nip between first and second forming rollers. Sheet metal products are easily and economically marked with permanent identifying relief patterns.

Abstract: A roll control mechanism of a retractable awning assembly includes spring clutches to operatively control the rotation of the roll bar in each of the two opposite rotational directions. Selective locking to prevent unrolling or extension of the canopy in one situation or to prevent the rolling or winding up of the canopy in another situation is achieved. A selector device for controlling the operation of the spring clutches is located on the support arm intermediate the top end connected to the roll bar and the bottom end adapted for contacting a support surface. Control of the roll control mechanism during set-up of the awning assembly is conveniently achieved. A support locking mechanism is also included within the selector device for fixing the length of two telescope support members of the support arm. Fixing the operative length occurs simultaneously as the roll control mechanism is controlled.