A Ring That’s Right For Every Engine is a 1970s promotional film for Perfect Circle’s piston rings (Dana Corporation). The short film opens with footage of racecars on the track at the 1974 Indianapolis 500. Lloyd Ruby pulls up in his No. 9 car. He speaks to the camera about racing. There are a few shots of pit crews working on engines. Ruby talks about his reliance on Perfect Circle piston rings. The film shows a number of different vehicles that apparently use/used Perfect Circle products: 1926 Indianapolis 500 winner Frank Lockhart smiles for the camera (02:16); a Packard motor car is driven on a road; World War II trucks and tanks drive in the field; tractors work on a job (02:55). Ruby gets out of a car at Perfect Circle’s Rushville, IN plant (03:44), where he takes viewers on a tour of the plant. A man creates casting molds for the rings. Molten metal is poured into the molds. At the Hagerstown chemical factory (05:11), scientists develop new products. A woman operates a spectrograph. Back at the Rushville plant, an employee strips rings away from the mold core (05:58). Castings are tumbled, and then run through a machine that splits the double rings into single rings (06:40). A man loads rings into a disc grinder (07:02); the sides of the rings are ground and then come off a conveyer belt. Viewers see some of the devices used to test the sizes of the manufactured piston rings (07:46). Rings are assembled on an arbor and aligned, then spun on a lathe. Finally, they are put through a milling machine (09:07). At a laboratory, instruments are used to electronically check rings as part of quality control (09:40). A new machine performs all ring machining operations for non-coated rings (10:20). Coated rings are sprayed with a plasma spray gun (11:04). The finished rings are measured electronically for plate thickness in the lab (11:44). Ruby shows off chrome and chromatic rings (12:15). Women check the rings as part of quality control (12:56), checking for any visible or physical imperfections. A machine measures the hardness of a ring (13:44). Viewers are then taken to one of Perfect Circle’s engine test laboratories (14:25), where engineers test the rings in various engines. Ruby poses in his racing suit with a box of Perfect Circle piston rings (16:37). A man demonstrates how to install a piston ring (17:12), cleaning the piston ring grooves first. Once complete, he oils the rods, pistons, and rings. A ring compressor is slid over the piston and tightened. The film ends with Ruby pulling out onto the racetrack in his no. 9 car (19:10).

We encourage viewers to add comments and, especially, to provide additional information about our videos by adding a comment! See something interesting? Tell people what it is and what they can see by writing something for example: “01:00:12:00 — President Roosevelt is seen meeting with Winston Churchill at the Quebec Conference.”

This film is part of the Periscope Film LLC archive, one of the largest historic military, transportation, and aviation stock footage collections in the USA. Entirely film backed, this material is available for licensing in 24p HD, 2k and 4k. For more information visit http://www.PeriscopeFilm.com