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).
Letter from E. T. Curran proposing a radiator partition design to prevent motor overcooling, complete with a cutaway illustration.
| Identifier | ExFiles\Box 149a\3\ scan0071 | |
| Date | 1st December 1927 | |
| New York, N. Y., Dec. 1st, 1927. Dear Chief: You are interested in overcoming the unsatisfactory conditions due to motor overcooling. Your attention is invited to a simple yet efficient improvement for this purpose. Usable with shutters or similar devices—or better still, as a substitute therefor. The maker of your radiator can easily place a partition for the inflowing water : a part of the upper tank enclosing a sufficiency of tubes, conducting the water to lower tank. Opening V shaped (see illustration) freely unites the two water chambers. Radiator passages everywhere are free and clear. WHAT'S ACCOMPLISHED! In cold weather, water flows down tubes of smaller chamber. Motor warms quickly and remains so. If more cooling is required, water passes to larger chamber; if less is needed—circulation recedes to smaller area. This is the era of efficient motor refinements. Be a leader with this improvement on your car. For further particulars address E.{Mr Elliott - Chief Engineer} T. CURRAN 138 WEST 94TH STREET New York | ||