A quantity of generally rectangular chiplike devices, having electrodes on a pair of edges, are supplied to an unloading platform by a vibratory feeder. A cylindrical conveyor mounted adjacent the feeder includes on its outer periphery a set of vacuum conveying heads arranged at equal angles thereabout. The conveyor is indexed about its central axis in angular increments, bringing each conveyor head in succession into operative relation with a device at the loading station. As the conveyor head comes into proximity of a device at the loading station it is connected to a vacuum pump whereby the device is retained to move along the circular path. In another station farther along the path of movement of the conveyor an appropriately dimensioned set of electrical contact plates is arranged so that the device picked up by a preceding conveyor head is connected with the set of contact plates for accomplishing electrical test. As the conveyor indexes farther, mechanical memory elements shut off the supply of reduced air pressure to the conveyor heads, allowing the tested device to fall into a selected receptacle.

Arms are mounted on a rotary hub which is driven so that the arms take up bags newly made by a bag-making machine and deliver the bags in regular order for stacking in a basket or for delivery onto mounting wickets. The arms have two faces which can be positioned so that one of the faces selectively engages the newly-made bag. Which of the faces is employed is determined by whether the bags are to be stacked in baskets or wicketed. The rotary hub carrying the arms rotates adjacent a manifold which controls the vacuum supply to the arms. The manifold is connected by two pipes to the vacuum source to maintain vacuum supply through the manifold.

A turntable with olive cups is advanced stepwise by a suitable Geneva movement. At a feed station unpitted olives are delivered into the cups. Between the feed station and the pitting station the cups are vibrated to properly orient the olives for pitting. After pitting, the olives are stuffed with pimento, the pimento feed system including toothed drive means for a continuous pimento strip, a feed chute which serves to fold the strip in half along its lengthwise centerline, and cut-off knives to sever the strip into sections for stuffing.

Screen printing apparatus having an inner stationary column having a vertical axis and an outer rotatable cylinder encircling the column and rotatable about the vertical axis. A rotatable turntable is mounted on the rotatable cylinder for movement between successive screen printing stations. The turntable mounts plural work supports having vacuum beds to retain workpieces. A vacuum ring is connected to a stationary vacuum means and has a slidable sealed contacting surface with the turntable to transfer vacuum to a plurality of conduits extending to each work support.

Electrical elements are moved by vibrator apparatus to a position below a multi-arm having a plurality of circumferentially spaced pickups to which respective tubes are connected. The spider is on a post that is moved in steps, and at the end of each step is raised and lowered. Via a control element around which the spider moves, each pickup tube is connected to a vacuum source as it reaches a pickup station, so that it captures a single element, and is maintained on vacuum through a test station to a drop station, where the vacuum is cut off and the element is released and directed to a receptacle selected as a result of a measurement previously made at the test station. Test contact arrangements shown include spaced spring contacts on nonconductive discs releasably mounted on a post, and spaced contacts wherein one is mounted on such a disc and the other is on the pickup. For the latter, connection to a stationary terminal is effected through a respective wiper for each contact carried by the spider structure. Also shown is photoelectric detection and associated air blast apparatus for returning components to the vibrator which do not have predetermined light reflective surfaces facing upward.