Abstract: Latch operating means are disclosed comprising a linearly moveable operating member and a rotationally moveable latch operating member, interaction means comprising a thread and a thread engaging cam being provided betwen said operating member and said latch operating member, said interaction means translating linear movement of said operating member into rotational movement of said latch operating member: the latch operating means in the various forms of the invention are constructed such that said latch operating member has located rotatably thereon connector means, said connector means and said latch operating means having rotatory loss connection means therebetween; said thread being a groove and said thread engaging cam being a bearing; and being provided with locking means to restrain rotation of said latch operating member.