Worm 1 rotates about fixed axis A-A of spline shaft 5 and can slide along this axis on the splines. Worm 1 meshes with worm wheel 2 which rotates about axis C of housing b. Housing b is rigidly attached to slide 3 which reciprocates in fixed guides d-d. Worm wheel 2 is connected by turning pair B to link 4 which turns about fixed axis D. When driving shaft 5 rotates, worm 1 transmits reciprocating motion, parallel to axis A-A, to driven worm wheel 2 in addition to rotation about axis C.
$2818$WG,ML$