June, 1954]
JAMES
N.
WARNER
AND
O.
P.
AGARWALA
109
The faucet plug housing is a frustrum of a cylindrical cone about one and a
half inches long. The walls are about one-eighth inch thick; greater thickness is
probably unnecessary. The inside diameter of this housing is about one inch at
the top and three-fourth inch at the bottom. It is fixed between the feed pipe
inlet and the feed pipe threaded outlet, at right angles to their long axis, so that
when the faucet body is installed in the can this housing is substantially parallel
to the long axis of the can. Opening through either side of this housing, with a
diameter equal to the inside diameter of the feed pipe and the threaded outlet, open
into these respective parts of the faucet body. This housing should be so con-
structed that it extends about one-fourth inch below the bottom outside edge of
the inlet and outlet pipes; it may extend nearly one-half inch above their top out-
side edges.
The feed pipe threaded outlet is a continuation of the feed pipe, extending
for about one-fourth inch beyond the faucet plug housing, opposite the feed pipe
inlet. It has an outside diameter of fifteen-sixteenth of an inch where it is threaded
for attaching the ring valve housing. The thickness of the walls of this piece is
about one-eighth inch.
The milk outlet cone is an extension of the threaded outlet and is about one-
half inch long. Its outside diameter at its inner end, where it is attached to the
threaded outlet, is about five-eighth of an inch, that is about one-fourth, inch less
than the outside diameter of the threaded outlet. The outside diameter of this
outlet cone diminishes to seven-sixteenth of an inch at its outer end. The thick-
ness of the walls of this piece at its inner end is similar to that of the other portions
of the faucet body, that is, three-thirty-second to one-eighth inch; at its outer
end this wall thickness is about one-sixteenth of an inch only. The diameter of
the opening at the outer end of this cone outlet is about five-sixteenth inch.
Faucet plug. This is a piece of such dimensions that it fits into the faucet
plug housing sufficiently tightly and snugly that milk may not leak from between
them. It is sufficiently long that it extends above and below its housing about
one-fourth inch at each end. The upper end contains a special shaped hole about
one-fourth inch deep for inserting a key with which to turn this plug to open or close
the faucet; it is desirable to have the hole so shaped that the position of the plug
when the faucet is open may be clearly indicated.
A groove, three-thirty-seconds inch wide, is cut into this plug about its entire
circumference, perpendicular to its long axis, at such a distance from the bottom
end of the plug that the top edge of the groove is immediately opposite to the bottom
edge of the plug housing when the plug is in position. This groove is about one-
eighth inch deep. The plug-locking collar fits into this groove, to prevent the removal
of the faucet plug, when the faucet is assembled.
Plug locking collar. This is a round U-shaped piece, made of sheet brass, about
one-sixteenth of an inch thick. The throat or opening is seven-sixteenth of an
inch wide and one-half to three-fourth of an inch deep; the sides of the collar are
about three-eighth of an inch wide. The outside edge of the collar, directly opposite
the opening, is extended about one-fourth inch wide and one-fourth inch long, it
is bored near its outer end with a three-thirty-seconds inch hold and is bent at an