Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1976-08-31
1977-09-06
Granger, Theodore A.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
210402, B23P 1516
Patent
active
040458539
ABSTRACT:
Filter drums of desired diameters and axial lengths are built up from cylindrical modules supported in end-to-end relation on a through axle. Each module has a cylindrical frame composed of end rings connected by and supporting a ring of circumferentially spaced longitudinal bars. A grid formed in the flat by welding spaced parallel transverse ribs to underlying spaced parallel longitudinal rods is rolled into a cylindrical shape and wrapped around bars of the module with the rods of the grid forming hoops which are welded to the bars. The through axle has end heads and intermediate spiders mounted thereon. The outboard rings of the modules forming the end sections of the drum are secured to the heads and the inboard rings of these end modules are secured to the end rings of the intermediate modules with spider legs on the axle secured to one ring of an adjacent pair of rings. One or more filter cloths are then wrapped around the ribs of the resulting drum to form the outer screen filtering periphery for the drum.
REFERENCES:
patent: 1745783 (1930-02-01), Clark
patent: 1795634 (1931-03-01), Boykin
patent: 1882178 (1932-10-01), Cumberland
patent: 2669910 (1954-02-01), Trotman
patent: 3013666 (1961-12-01), Krynski
patent: 3306457 (1967-02-01), Putnam
patent: 3419150 (1968-12-01), Davis
patent: 3425561 (1969-02-01), Steele et al.
patent: 3504802 (1970-04-01), Luthi
patent: 3747770 (1969-06-01), Zentis
patent: 3876548 (1975-04-01), Welles, Jr.
Alar Engineering Corporation
Granger Theodore A.
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