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).
Fractures and internal stress cracks in Zenith petrol filters.
| Identifier | ExFiles\Box 44\1\ Scan220 | |
| Date | 20th August 1928 | |
| To EP{G. Eric Platford - Chief Quality Engineer}/Thn. from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} X3700 c.c. to BY.{R.W. Bailey - Chief Engineer} c.c. to CWB. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG20.8.28. ZENITH PETROL FILTERS. With reference to Thn10/H16.8.28. If you will send us a sample of the fractures of which you complain we will go further into the matter. We cannot complain to the makers when we have no fractures ourselves. The only troubles we have seen recently on this glass have been small cracks due to internal stresses in the bowl. These cracks do not cause a leakage as they do not go right through the glass. For the time being therefore we are not very concerned about them although we are making every effort to induce the makers to overcome the trouble. Hs{Lord Ernest Hives - Chair}/Sm | ||