Method of manufacturing a joint for connecting a spigot to the b

Details Method of manufacturing a joint for connecting a spigot to the b Method of manufacturing a joint for connecting a spigot to the b

1987-04-03

1988-09-06

Eley, Timothy V.

Metal working

Method of mechanical manufacture

Assembling or joining

29521, 277207A, F16J 1510, B23P 1100

Patent

active

047682787

ABSTRACT:
A process is disclosed for manufacturing a bell end of a pipe fitting or coupling carrying a gasket. The bell has a mouth at the open end thereof and a longitudinally-extending axis, the bell carrying an annularly-extending groove securing an annularly-extending gasket; the groove comprising a bottom, a rearward wall joined to the bottom on the end of the bottom remote from the mouth of the bell, the rearward wall extending away from the bottom at an angle less than or equal to 90 degrees, the bottom terminating forwardly at a radially outwardly-directed wall and an offset longitudinally-extending wall portion extending from the end of the radially outwardly-directed wall remote from the bottom and being bent over to extend into the bell. The gasket comprises a body of resilient yieldable material and has a bottom wall for seating on the bottom of the annularly-extending groove, a rear portion for abutting the rearward wall of the groove, a sealing lip portion on the side of the body portion remote the bottom wall for engaging the spigot end of a pipe inserted into the bell, and a forward offset portion proximate the bottom conforming in shape to the space between the end wall extending from the forward end of the bottom of the groove in the bell and the bent-over, curved, thinner, longitudinally-extending wall.

REFERENCES:
patent: 1804284 (1931-05-01), Smith
patent: 3493237 (1970-02-01), Kleindinst
patent: 4343480 (1987-08-01), Vassallo
patent: 4510664 (1985-04-01), Lock
patent: 4543112 (1985-09-01), Ackley et al.
patent: 4546529 (1985-10-01), Leon

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