IBM 704 - Manual (Page 112)

Installing a Microprocessor
17. Move the lever forward and downward until it snaps into the
fully closed (locked) position.
18. Install two heat-sink clips to hold the microprocessor/heat sink
assembly in the socket:
a. Each heat-sink clip has a rounded edge 1 and a flat edge
2 . Position the two heat-sink clips straight across the heat
sink so that the flat edges 2 at the ends of the clips face
each other.
94 PC Server 704 User's Handbook