Seals for the passage of wire between regions of different press

Details Seals for the passage of wire between regions of different press Seals for the passage of wire between regions of different press

1976-06-21

1977-10-18

Combs, E. M.

Metal deforming

With exposure of work to gas, vapor, mist, or modified...

29DIG44, 72 46, 72342, 118 50, 432242, B21D 3716, C23C 1310, F27D 100

Patent

active

040540448

ABSTRACT:
A seal for permitting a wire to be fed through a wall separating regions at different pressures, e.g. into and out of a vacuum chamber for heat treatment or coating, comprises a pair of die-shaped elements of hard rigid material each having a bore for passage of the wire, these elements being spaced apart in a tube extending through said wall, means for pumping air from said tube, and an internal wire guide in said tube adjacent one of said holders and having an internal diameter decreasing towards that holder.

REFERENCES:
patent: 496208 (1893-04-01), Procunier
patent: 1785037 (1930-12-01), Martell et al.
patent: 2708843 (1955-05-01), Gibson et al.
patent: 2924329 (1960-02-01), Compson
patent: 3850139 (1974-11-01), Franke et al.
patent: 3879973 (1975-04-01), Godyn et al.
patent: 3952568 (1976-04-01), Wareing et al.

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