Abstract: A portable, refrigerated article display apparatus for displaying food items such as soda cans includes a hollow housing having a transparent outer wall, a base support for mounting the housing, a door mounted over an access opening in the transparent outer wall and systems for cooling the housing interior and defogging its transparent outer wall. Articles are stacked in vertical columns within the housing interior upon an article support carriage which is rotatable with respect to the fixed base and housing to index each vertical column of articles into direct alignment with the door. In removing articles from the housing, the door is operable in an open position to permit removal of the lower most article in the column while supporting the articles above. The remaining articles in the column are released in preparation for removal of another article upon closing the door.

Abstract: Apparatus for dropping rings one at a time from a stack and including apparatus for receiving piston rings so dropped and applying them to pistons. The apparatus includes a tube, upper and lower pawls slidably mounted in the lower end of said tube and an oscillating cam having a pin and slot interconnection to said pawls to cause them to project and retract alternately in order to drop a ring from the lower pawl while retaining the stack with the upper pawl and to drop the stack onto the lower pawl. Adjacent the lower end of the tube is a ring spreader which has a jaw engageable with one side of a piston ring and bifurcated jaw engageable with the other side of the piston ring with means to cause the jaws to engage the piston ring and spread the bifurcated jaws apart to open up the ring, whereupon the spreader may be lowered to position the ring around the piston.

Abstract: Apparatus for dropping rings one at a time from a stack and including apparatus for receiving piston rings so dropped and applying them to pistons. The apparatus includes a tube, upper and lower pawls slidably mounted in the lower end of said tube and an oscillating cam having a pin and slot interconnection to said pawls to cause them to project and retract alternately in order to drop a ring from the lower pawl while retaining the stack with the upper pawl and to drop the stack onto the lower pawl. Adjacent the lower end of the tube is a ring spreader which has a jaw engageable with one side of a piston ring and bifurcated jaw engageable with the other side of the piston ring with means to cause the jaws to engage the piston ring and spread the bifurcated jaws apart to open up the ring, whereupon the spreader may be lowered to position the ring around the piston.