Door latch

Claim 1

A LATCH ASSEMBLY COMPRISING, A SLIDE BOLT SLIDABLE BETWEEN EXTENDED AND RETRACTED POSITION, SPRING MEANS URGING SAID BOLT INTO EXTENDED POSITIONS, ROLLBACK MEANS INCLUDING A BOSS HAVING A NON-CIRCULAR OPENING FOR RETRACTING SAID BOLT IN OPPOSITION TO SAID SPRING MEANS, A PAIR OF ESCUTCHEONS WITH ALINED ROUND CENTRAL OPENINGS SURROUNDED BY A PAIR OF RECESSED ANNULAR SEATS, A NON-CIRCULAR SPINDLE EXTENDING FREELY THROUGH SAID CENTRAL OPENINGS AND ROLLBACK BOSS FOR OPERATING SAID ROLLBACK MEANS RESPONSIVE TO TURNING OF THE SPINDLE, SAID SPINDLE BEING SLIDABLY ADJUSTABLE ALONG ITS LONGITUDINAL AXIS RELATIVE TO SAID ROLLBACK MEANS, HANDLES AND BEARING MEANS SLIDABLY SLEEVED ON THE SPINDLE TO TURN IN UNISON THEREWITH, SAID BEARING MEANS BEING SEATED AGAINST SAID RECESSED ANNULAR SEATS AND HAVING RESPECTIVE BOSS-LIKE PROTRUSIONS EXTENDING INTO AND HAVING A BEARING INTERFIT WITH SAID CENTRAL OPENINGS IN THE ESCUTCHEONS AND IN SUBSTANTIAL CONTACT WITH SAID ROLLBACK BOSS, MEANS RESISTING OUTWARD ENDWISE MOVEMENT OF ONE OF SAID HANDLES RELATIVE TO THE RESPECTIVE END OF THE SPINDLE, THE OTHER END OF THE SPINDLE BEING THREADED, A NUT SCREWED ON SAID THREADED END OF THE SPINDLE AND BEARING AGAINST THE OTHER HANDLE TO ADJUSTABLY HOLD SAID BEARING MEANS AGAINST SAID SEATS BY PULLING SAID HANDLES TOWARD ONE ANOTHER, SAID OTHER HANDLE HAVING AN OUTWARDLY OPENING CAVITY HOUSING SAID NUT, AND A REMOVABLE COVER PLATE ON SAID OTHER HANDLE FOR SAID CAVITY.