TY - JOUR
AU1 - Ltd., The General Electric Co.
AB - 212 NEW INSTRUMENTS AND TOOLS MAGNETIC OIL FILTER PHILIPS INDUSTRIAL (PHILIPS LAMPS, LTD.), Century House, Shaftesbury Avenue, London, W.C. 2 THIS system of magnetic oil filtration consists of the enclosure of a permanent magnet in a cylin- drical aluminium housing, arranged so that the fluid to be filtered must pass within at least 2 mm. of a permanent magnet. The device is not intended to carry out the first gross decontamination of either lubricating or cutting oil, and the efficiency is said to commence where other systems finish. After full advantage has been taken of other means of cleansing, the passage of cutting oil through the Philips Magnetic Oil Filter has, it is stated, shown that considerable quantities of magnetic contamination can still be successfully trapped. Impurities of the order of 0.0004mm. have been withdrawn in substantial quantities by this method. Model No. 7715, which is the smallest size, has a capacity of 120 gallons per hour, and is designed to operate on pressures up to 75 lb. per sq. in., but for most applications installation is suggested on the suction side of the system, as the pump then automatically secures a substantial benefit. The interior trapping surface will 
TI - A daylight testing range for projection equipment
JF - Journal of Scientific Instruments
DO - 10.1088/0950-7671/17/8/406
DA - 1940-08-01
UR - https://www.deepdyve.com/lp/iop-publishing/a-daylight-testing-range-for-projection-equipment-c6Cjb2BUnV
SP - 212
VL - 17
IS - 8
DP - DeepDyve
ER -