Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1975-06-06
1976-06-01
Moon, Charlie T.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29446, 29455R, 29458, 29523, B21D 5300, B21K 2900, B23P 1526
Patent
active
039598667
ABSTRACT:
A burner assembly in which various elements are joined in a manner which ensures gastight integrity of the assembly. A porcelain-coated base plate is formed of a pair of overlying steel sheets with integral embossments defining air-gas ducts to burner heads mounted on the base plate and defining ignition tubes for conducting a flame from a pilot housing to the burner heads. The air-gas ducts are sealed by establishing a pressurized flow of a slurry of ceramic frit therethrough, which is effective to coat the full interior of the ducts and close any crevices formed between the sheets. The burner head elements are arranged to provide metal-to-metal sealing engagement with peripheral edges of apertures in the base plate sheets which are characteristically free of porcelain enamel coating. An annular embossment on one of the sheets is preloaded by deflecting it toward the other sheet during assembly of the burner head elements. The embossment is locked into the stressed preloaded condition by permanent deformation of a flange on one of the burner head elements in a manner which transfers the preload force to the contact areas of the various head elements and base plate to ensure that their engagement is gastight. The structure of the burner heads and base plate is arranged to increase the contacting forces between the various elements during operation as a result of differential thermal expansion of the elements.
REFERENCES:
patent: 2539101 (1951-01-01), Reeves
patent: 2595005 (1952-04-01), Shelton et al.
patent: 2693027 (1954-11-01), Myer
patent: 2842074 (1958-07-01), Hess et al.
patent: 3090109 (1963-05-01), White et al.
patent: 3219098 (1965-11-01), Fulmer
patent: 3396449 (1968-08-01), Brantner
patent: 3619099 (1971-11-01), Moss
patent: 3858811 (1975-01-01), Mizerak
Biddle William P.
Tacker John J.
Athens Stove Works, Inc.
Moon Charlie T.
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