can be opened against the spring force and the draw down as a consequence of the slider 26 being moved by the cam 30 is such as to engage the rocker arm 36 against the blocker 39 the flanking tabular extensions 41 serve as stabilizing guides from the extended position of the sliders under the condition b of an open and opening drawer 12 and guide the straps 34 in return to the vertical position on closing the drawer 12 the openings 42 are fastener locations and they are located through the frame 17 in accord with the styling and construction of the particular drawer support structure as exemplified by the cabinet 14 the cap screws 43 passing through the rectilinear opening passage in the slider 26 support a journal shoulder as will be seen that serves as a bushing for the web 20 in support of the cam 30 and as a post indexing the movement of the slider 26 as shown as will be appreciated the frequency and interval of the interlock stations 22 can be varied to suit particular selected numbers of drawers and drawer depth and the projecting barrier or trip pin 32 attached to the drawers 12 may be adjusted to further accommodate selected sizes and arrangements of drawers 12 adding to the flexibility and design possibilities served by interlock 11 in fig2 the structure of fig1 is turned over to reveal the cam 30 on the reverse side the drawer side of the web 20 when the drawer 12 fig1 is closed in situation a in the corresponding station 22 the trip pin 32 in the pocket or interference perimeter should 31 has rotated the cam 30 to the position as indicated at a.