The figure below shows a $"$V$-$link" off$-$loading mechanism for a paper roll conveyor. Design a

two position linkage with no quick return $($see workbook exercise $3\mathrm{.}4$a$)$ to replace the air

cylinder driver that will rotate the rocker arm and V$-$link through the $90$ deg motion shown.

Keep the rocker arm of length $320$ mm and use it in your linkage. Keep the fixed pivots as

close to the existing frame as possible. Your fourbar linkage should be Grashof and be in

toggle at each extreme position of the rocker arm.

How long is the crank of the $2$ position linkage measured in mm $?$