Mortise lock

Mortise lock comprising

• means for housing encasing
• a pair of upper and lower hooking means, vertically spaced and mounted for simultaneous counter-rotational movements between an unlatched position, with said pair of upper and lower hooking means retracted within said means for housing, and a latched position, with said pair of upper and lower hooking means extending outwardly from said means for housing;
• a pair of upper and lower adjusting means, vertically spaced and generally located in parallel with said pair of upper and lower hooking means and used for conveniently pivoting said pair of upper and lower hooking means within said means for housing;
• an actuating means including
• a double-armed pivoting means having a cylindrical body and a pair of opposed radially extending arms disposed between said pair of upper and lower hooking means and adapted to be operated by a handle;
• and
• a pair of upper and lower connecting links, mounted between said double-armed pivoting means and said pair of upper and lower hooking means, said pair of upper and lower connecting links having different configurations, each being-provided with means for accommodating with said double-armed pivoting means, respectively with said cylindrical body, in any position of said pair of upper and lower hooking means, especially in retracted positions of said pair of upper and lower hooking means.