Electrically and manually actuatable door locking structure

A lock including a housing, a lock bar supported from said housing for longitudinal reciprocation between limit positions with one end extended and retracted relative to said housing, lock means shiftably supported from said housing for movement between locking and unlocking positions, said lock means and bar including coacting portions abuttingly engageable with each other to prevent shifting of said bar from said extended position toward said retracted position when said lock means is in said locking position, and operator means operative from the exterior of said housing for shifting said lock means between said locking position and said unlocking position, said operator means including a doorknob assembly journaled through said housing and having operating arm means mounted thereon for oscillation therewith, said arm means being operatively associated with said bar for reciprocating the latter in response to oscillation of said doorknob assembly, said doorknob assembly including a sleeve assembly extending through said housing and having door inner and outer knobs mounted on its opposited ends, said inner knob being secured on said sleeve assembly by means of a through bolt extending through said sleeve assembly and threadedly engaged with said outer knob, said sleeve assembly including opposite end sleeve sections journaled through opposing walls of said housing, said operating arm being carried by a connecting sleeve member into whose opposite ends the adjacent ends of said sleeve sections are telescoped, said operating arm being rotatably mounted on said connecting sleeve and said connecting sleeve and operating arm including coacting slip clutch means connecting said operating arm to said connecting sleeve for oscillation therewith.