GB629554A - Improvements in or relating to lubricating systems - Google Patents

Abstract

629,554. Lubricating systems. AKTIEBOLAGET SVENSKA KULLAGERFABRIKEN. March 17, 1947, No. 7349. Convention date, March 28, 1946. [Class 12 (iii)] For the supply of lubricant to points of use in small quantities in liquid form (which may later be applied as an oil mist) an air current carrying oil mist is directed through air ducts each provided at the far end with a very narrow constriction whereby all the oil is precipitated. A main duct 3 supplied from an atomizer 1 with oil-mist carried in an air current has branch ducts 4 and 7-11 the remote ends of which have very narrow constrictions 6 to precipitate the oil which then passes to the point of use. Thus, from the construction 6 of branch 4 the liquid oil passes directly to a bearing 5 ; from the constriction 6 of branch 7 ,the liquid oil passes to a sprayer 28 and from the constriction 6 of branch 8 to a drip-feed lubricator 35 ; branch 9 has a visible feed glass 17 for the drip-feed ; branch 10 has a filter 20 in front of the constriction 6. Each constriction consists of a precipitating nipple 6 with a smali axial bore 13, Fig. 4, opening into a cross channel 14 having a greater crosssectional area. The nipples may be combined with sight glasses, Fig. 4, filters, Fig. 5, spray nozzles, Fig. 6, or drip cups, Fig. 7. As shown in Fig. 4 a sight glass 15 is held between the parts 16, 17 which are screwed together with packings 18, part 16 having an outlet 38. As shown in Fig. 5 a filter 27 surrounds a peripheral groove 24 in the body 19 and with the casing 20 forms an annular chamber 23, body 19 having cross channels 25 and 22, the latter leading to the entry channel 21. The nipple 6 is placed beyond the filter. As shown in Fig. 6 a spray nozzle 28 is connected to the nipple 6 by a sleeve 29. The spray nozzle is formed by the tapered end of a tube 31 on the points 33 of which the oil collects in drops to be carried off by the air current ; a sleeve 34 protects the points 33. The bore of nozzle 28 should be 50 to 100 per cent greater than that of nipple 6. The drip cup 35, Fig. 7, with oil outlet 36 has air-escape holes 37 protected by the flange 39 of a cover 38. To check that all points are receiving lubricant a valve 40, Fig. 1, is opened to put the main duct to atmosphere so that the flow through the branch ducts is so reduced that the oil is no longer precipitated but goes forward as a mist and some of this mist escapes from each point of use and is thus visible.