Abstract: A contractible coupling for flared conduit connections of an annular configuration wherein the coupling includes a resilient metal band having tabs at the band ends permitting the band to be opened while contraction is produced by the band resiliency. A plurality of fingers located along the band lateral edges are deformed inwardly in spaced parallel relationship to the band inner surface to provide circumferentially spaced pressure points on the conduit flares being clamped.

Abstract: Method and apparatus are disclosed for dadoing cabinet panels. The dados are cut by a plurality of routers selectively extended into the panel. The selection of the number of routers, translatory movement of each of the routers, and positioning of the panel is controlled by air operated mechanisms. A pneumatic control system processes the operation of the routers in response to the inputs from a plurality of manually settable controls and the signals developed by feed back mechanisms. SPThis is a division of application Ser. No. 600,726 filed 7/31/75 now U.S. Pat. No. 4,005,738.

Abstract: A manually operable boring apparatus powered by compressed air drills precisely located pilot holes in cabinet doors to assist in the installation of apertured cabinet hinges. Upon the command of an operator, the hole boring apparatus causes a drill assembly containing three rapidly rotating drill bits to extend one-quarter inch into the rear face of a cabinet door. The boring apparatus further includes a bracket and retractable indexing pins which locate the drill bits a predetermined distance from the end of the cabinet door.

Abstract: Method and apparatus are disclosed for dadoing cabinet panels. The dados are cut by a plurality of routers selectively extended into the panel. The selection of the number of routers, translatory movement of each of the routers, and positioning of the panel is controlled by air operated mechanisms. A pneumatic control system processes the operation of the routers in response to the inputs from a plurality of manually settable controls and the signals developed by feed back mechanisms.