From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Promotional leaflet for 'The RETRAC OIL SPRING', a shock eliminator designed to improve car comfort and economy.
| Identifier | ExFiles\Box 46\1\ Scan138 | |
| Date | 13th November 1924 guessed | |
| The RETRAC Company 52 Vanderbilt Avenue New York City, N. Y. [Postcard Section] Simply detach, stamp and mail this card. It will bring you full particulars. A one-cent stamp will tell you here how to make you a better car. PLACE ONE CENT STAMP HERE [Logo] THE RETRAC OIL SPRING Swing This Arm and you'll see how a Retrac Oil Spring would act on your car, giving you a luxury in riding you had never known before. No, the oil Spring is not a “shock absorber”. It is a shock eliminator, with the unique faculty of automatically adjusting itself instantly to any variation in road, load or speed. Study the little model, note the designation of the parts. That flexible steel spring, attached to the swinging arm, moves with every movement of the car spring. But, being immersed in oil in a closed chamber, its action is controlled, impeded, by the non-compressible oil. Shocks that would otherwise reach the car body are taken up within this oil spring, which regulates the movement of the car springs to a smooth, easy, “velvety” motion that is the acme of riding comfort. [Diagram Labels] SPRING WALL FLEXIBLE SPRING PISTON AXLE LEVER THIS BEARING SWINGS ON LOWER OR AXLE BRACKET STUD THIS BEARING SWINGS ON UPPER OR FRAME BRACKET STUD ADJUSTING STUD [Bottom Left Text] The Retrac Oil Spring is not an experiment. It is already in service on cars of every quality, many of them the higher-priced cars that are supposed to afford every luxury in and of themselves. Over a million miles of road service on these cars has perfected the Oil Spring as offered today. It is inconspicuous, “fool-proof,” practically wear-proof. It makes the highest-priced car an easier-riding car. It is not too good for the moderate-priced car. [Bottom Right Text] If road comfort, tire economy, lower car up-keep, appeal to you—you will want to know more about the Retrac Oil Spring. A booklet has been prepared, fact-full, non-technical, common-sense in character, convincing in its descriptions. You are not asked to experiment. You are offered the tested results of five years of actual road service. Use the post card attached. It means no obligation on your part, it simply indicates your interest in making your car a more comfortable, economical car. [Bottom Headline] The RETRAC OIL SPRING introduces A NEW PRINCIPLE that ASSURES you GREATER COMFORT AND ECONOMY | ||