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I have shown a second photo electric scanning eye 140 which is like the one previously described. The eye 140 is similarly dis posed within a housing 141 mounted on a separate slide carriage 142 which is secured to the outer end of the piston 143 of another ?xedly supported double-acting air cylinder 144, said housing being shiftable back and forth transversely of the apparatus on the cross member 46 previously referred to, and compressed air being ad mitted and exhausted from said cylinder under control of a magnetically-actuated valve 147. Engaged in sepa rate guideways 131 on the trays 27 are slides 132 with upstanding pins 133 which are adapted to be engaged by a pusher projection 148 also af?xed to the piston rod of the cylinder 144. ‘Placed upon a shelf 50 below the upper run of the con veyer is a longitudinally-arranged series of bins or recep tacles Rl-R13 respectively receiving differently propor tioned stockings. Above the locations of the bins R1— R13, the horizontal ?anges 22a and 122a of the supple mental longitudinals 22 and 122 have cut-outs or voids 52 and 152 which are uniformly spaced to correspond with the spacing of said bins. These cut-outs or voids 52 and 152 are normally closed by withdrawable slides 53 and 153 which are operatively connected inpidual ly to the spring retracted piston rods of actuating air cylinders 55 and 155 respectively. Extending to the cylinders 55 and 155 are branches 56 and 156 of a pip ing system 60 which is in communication, through a main 61 (see Figs. 3 and 4), with a suitable supply source (not shown) of compressed air. Interposed in each of the pipe branches 56 and 156 are magnetically-actuated control valves 62 and 162; and interposed in the main 61, see Fig. 3, is a manual shut-off valve 65, a strainer 66, a pressure regulator 67 and a lubricator 68. As shown in Fig. 3, the magnetically-actuated control valves 47 and 147 for the cylinders 44 and 144 are connected to the piping 60 by tubes 74 and 174. Inward movement of the sensing eye 40 is initiated through actuation of a switch 75 which is secured to a pendent projection 76 of bracket 45 (see Figs. 12, 13), the operating arm 77 of said switch extending into the path of the pivot lugs 25 of the trays 27 at one side of the machine. Similarly, the inward movement of the sensing eye 140 is initiated through actuation of a switch 175 which is secured to a pendent projection 176 of the bracket 145 (see Figs. 14 and 15) the operating arm 177 of said switch extending into the path of the heel stops 30 of the trays 27 at the other side of the machine. Diagonally arranged above the conveyer, with one end thereof supported by the cross member 46 and the other end thereof supported by a cross member 70 further along in the machine, is a bar 71 whereto is secured at the bottom at intervals corresponding to the spacing of the voids 52 in the longitudinals 22 and 122, a series of electric switches L1, L2, L3 and L4, which are adapted to be closed inpidually by the studs 33 differently posi tioned on said trays by the action of the pusher projec tion 48 associated with the carriage of the sensing eye A?ixed to another bar 171 supported like the bar 71 by the cross members 46 and 70 is a series of micro switches H1, H2 and H3 which are adapted to be closed inpidually by the studs 133 differently positioned on the trays by the action of the pusher projection 148 as sociated with the carriage of the sensing eye 140, and thereby complete electrical circuits for the actuation of the magnetic valves 62 and 162 that control the opera tion of the slide withdrawing cylinders 55 and 155. Upon being successively released to swing downward about the lugs 25 on the chains 2, the trays drop the stockings of di?erent lengths and high heel proportions into the proper receivers as also later on explained, their fall being controlled by cooperation of their rear lug projections 29a with ?xed inclined angle section guides 81 (Figs. 1 and 2) which extend downwardly and rear wardly from longitudinals 22 and 122 and of which the bottom ends are rearwardly curved on a relatively short’ radius. Before rounding the sprockets 4, the trays 27 are once again leveled by cooperation of the rear lugs 29a with other ?xed guides 82 and, as the chains 2 pass down from the sprockets 4 to the sprockets 6, said trays are controlled by engagement of their said rear lugs 29a with ?xed vertical guides 83 whereof the lower por~ tions are rounded as at 8311 toward the last mentioned f sprockets to merge with horizontal guide rails 85 secured to the frame 1 below the bottom longitudinals 18. As the lower runs of the chains 2 move horizontally to ward the front or feeding end of the machine, the trays 27 are kept level as their rear lugs 29a ride the rails 85.‘ From Fig. 1, it will be noted that the rails 85 terminate somewhat forward of the sprockets 5 to keep control of the trays until they assume a vertical position in sus pension. During horizontal travel of the trays 27 in the lower part of the machine, the slides 32 and 132 on them are restored to their original positions by engage ment of the studs 33 and 133 with the inclined edges 86a and 186a of cam bars 86 and 186 a?ixed to frame 1, see Figs. 5, 7 and 8. As the trays move upward and round the sprockets 3 they are prevented from swinging by engagement of their tail lugs 29a with the pendent frontal end portions 22b and 122b of the rails 22 and 122. 1 Referring now to the diagram of Fig. 16, the current for the energization of the various electrical instrumental ities hereinbefore described is supplied from the mains 90, 91, say of a 220 volt A. C.