Symbolic Stereo from Structural Descriptions

499,775. Bearings ; stuffing - box substitutes. DUPREE, JUN., S. F. July 28, 1937, No. 20922. Convention date, Aug. 4, 1936. [Class 12 (i)] [Also in Group XXVI] A unitary bearing assembly for pumps comprises a housing 6 which can be removably fitted within a seat 5 in the pump body 1, a sealing ring 22 pressed against the housing by a resilient member such as a spring 30, shaft bearings 7, 10, and lubricant receiving means therefor. As shown, the bearings 7, 10, are cylindrical bushes having lubricant channels 13, 14. A thrust collar 33 is fixed on the shaft 11. The housing 6 has oil passages 15, 16, communicating with an oil reservoir 12 in the pump body. A packing device comprising a ring 27 and spring 30 is mounted within a cavity formed in the pump impeller 26, the ring 22 having projections 23 engaging slots in the boss 25 of the impeller so that it rotates with the shaft. One or both bearings 7, 10, may be replaced by ball bearings, and instead of the ring 22 engaging a boss 21 on the housing, it may engage an inwardly turned part of the housing as shown in Fig. 20. In addition the sealing members 30a, 87, Fig. 20, may be mounted within a cup 65 fixed to the spindle. The ring 87 is U-shaped and the face bearing against the ring 22 may be grooved. In a modification, the side flanges of the ring 87 project radially inwardly.