Dead bolt lock accessory

A dead bolt lock accessory for mounting on vertical surface to function a time delay in unlocking the lock comprising (1) a first elongated arm attached to the inside manually operated handle of a dead bolt lock, the arm containing a series of regularly spaced vertically upward projections of increasing vertical length as distance from the axis of rotation of said handle increases, (2) mounted vertically above or below said dead bolt handle a fixed post and a collar rotatably attached to said post, said collar carrying a spring biased radially slideable pin which is capable of engaging a hole in said fixed post, said collar having fixed to it a second elongated arm substantially the same length as said first elongated arm and positioned in vertical alignment with said first elongated arm, said second elongated arm having a smooth level surface, a constant cross section, and a weighted portion at its free end;

• and (3) a linking member slideably attached to both the first and second elongated arms by a first and second eye, respectively, said first eye having a vertical length at least as large as the vertical length of the largest of said projections and said second eye being slightly larger than and loosely slideable over said second elongated arm, the connection between said first and second eyes being offset such that said first eye is more distant from said axis of rotation than the second eye is from the axis of said post.