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Патент USA US2406235

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Aug.- 20, 1946.,
' R. L_. MCCOY‘
Fired Feb. .25, 1944
Patented Aug. 24), 1946
Robert L. McCoy, Baltimore, Md., assignor to
Locke Insulator Corporation, Baltimore, Md., a
corporation of Maryland
Application February 25, 1944, Serial No. 523,876
4 Claims.
(61. 138——76)
The invention relates to ceramic or porcelain
pipes and more particularly to improvements for
coupling such pipes.
In the past it has been customary to cement
?anges or other couplings ?ttings to porcelain
pipes and while a permanent connection of this ‘
character between the pipe and ?tting is usu
ally satisfactory, conditions often occur when ad
joining pipes cannot be installed in such man
ner that the bolt holes in the ?tting on one pipe
can be brought into alignment with the bolt holes
in the corresponding ?tting of the other pipe.
To meet these special conditions‘ the ?ttings of
certain pipes would have to be cemented to the
pipes in a de?nite predetermined relationship or
vention, of course, is not limited to this particu
lar kind of porcelain pipe but is equally applica
ble' to'ceramic or porcelain pipe of any shape.
Moreover, while the invention is particularly
useful in connection with porcelain pipes, it can
be used equally well with any ceramic pipe and
the term “porcelain” as used in the speci?ca
tion and claims is, therefore,‘ not to be construed
as limiting the invention to pipes made of that
Referring more particularly to the drawing, l
indicates a porcelain pipe whose outer surface
where a coupling ?tting is to be appliedis rough
ened by sand or other roughening material. In
the embodiment of the invention illustrated‘the
sand is shown as forming a band 2 encircling the
else, as has been done in the past, some provision
pipe but it will be appreciated that it need not
must be made enabling adjustment of the pipe '
, be arranged in this particular manner. The sand
?ttings when the pipes are being connected.
or roughening material may be included in the
The arrangements and ‘constructions which
have been heretofore employed to meet these 20 outer surface of the pipe in any well known or
desired manner, such, for example, as by spray
‘conditions have been either quite, expensive or
impractical and in'aeiiective. The object of the
present invention is to provide a porcelain pipe
ing it onto the pipe while the glaze is still moist.
En'circling' the pipe at ‘each end where a cou
having means whereby a coupling ?tting may be
pling ?tting is to be applied‘ is a sleeve or the like
rigidly and easily clamped thereto‘ in a plurality
of different positions of adjustment.
ened outer surface of the pipe‘. ‘The sleeve is
3 whiciioverlaps and’ interlocks with the rough
preferably molded onto the pipe by arranging a
A primary feature of the-invention consists in
providing a porcelain pipe With a one-piece sleeve
mold of any suitable kind, not shown, around the
and a multi-part ?tting of a coupling device ad
and then pouring the material of which the
justably clamped on the sleeve, the sleeve being 30 sleeve is composed in a molten or liquid condi
tion into'the space between the pipe and mold.
of less hardness than the ?tting and forming a
Upon solidifying, the mold is removed and the
rigid and immovable part of the pipe.
sleeve becomes a rigid and immovable part‘of
Another feature of the invention consists in
the pipe. The sleeve provides‘ a base on to which
providing the pipe with a sleeve molded on‘ a
a multi-part ?tting 4 of a‘ coupling device may
roughened surface‘of the pipe, the sleeve‘ afford
be clamped and it is preferably of a material
ing a base on which a multi-part coupling ?t
which is of less hardness than the coupling ?t
ting may be clamped and being of less hardness
than the ?tting.
. ting;
It may advantageously be formed of lead
Other and more speci?c features of the inven
tion, residing in advantageous forms, combina
' antimony alloy, such as the alloy commonly used
tions and relations of parts, will hereinafter ap~
pear and be pointed out in the claims.
may be made of a material known in the trade
consisting of 85% lead and 15% antimony, or it
- as “basolit” or any acid-proof and ?re-proof ma
In the drawing, 7
Figure l is ‘a view partly in section and partly
hardness than the coupling ?tting, it may be
In fact so long as the sleeve is of less
in side elevation of a porcelain pipe having a 45° 45 made of practically any material which will ?ow _
into the space between the pipe and mold and
which upon solidifying will afford a base to which
Figure 2 is an end view of the pipe shown in
bend embodying my invention.
the coupling ?tting may be clamped.
The sleeve extends longitudinally of the pipe a
Figure 3 is a view partly in section and partly
in elevation of a slightly modi?ed form of the 60 sufficient distance to enable the coupling ?tting to
invention, the coupling ?tting being omitted.
Figure 4 is a view similar to Figure 3 showing
the coupling ?tting on the pipe.
'While a porcelain pipe having a 45° bend has
been chosen for purposes of illustratiomthe in
be adjusted longitudinally of the pipe to whatever
extent may be'required. Moreover, its outer sur
face may be formed with circularly extending
ribs or serrations 5 of ‘any advantageous shape
or form so as to interlock with corresponding
2,406,235 "
ing longitudinally of the pipe after being adjusted
without departing from the spirit and scope of
the invention asv de?ned in the appended claims.
What I claim is;
1. In a porcelain pipe having a'glazed surface
portions on the inner face of the coupling ?tting
and thus restrain the coupling ?tting from shift
The coupling ?tting is of any desired construc
tion which may be securely clamped on the sleeve
so that, after adjustment, the ?ttingwill remain
intermediate its ends, an outer roughened sure
face formed by projecting particles adjacent one
extremity of said pipe, a yieldable metallic sleeve
surrounding said roughened surface and having
said‘p'rojecting particle's'embedded therein, ex
in place. The particular ?tting illustrated in the
drawings is formed of two substantially identical
parts 6 each having laterally projecting lugs ‘I 10 terior serrations formed on said sleeve, and a
for receiving means, such as bolts 8, for clamp
Y ?tting encircling said sleeve and having’ interior
ing the ?tting to the pipe in a desired position
of adjustment. Each part of the ?tting is also
rations; said ?tting being adjustable longi
provided with laterally projecting apertured lugs
tudinally of said pipe.
serrations interlockingly engaging said sleeve ser
9 which, upon adjustment of the ?tting, will be 15, 2, In a porcelain pipe having a glazed surface,
‘an outer sanded surface formed integrally with
in'alignment with similar apertured lugs of the
said pipe adjacent an end thereof, a yieldable
coupling ?tting of the other pipe of the two pipes
metallic sleeve surrounding said sanded surface
which are to be coupled. Bolts, not shown, may
then be inserted in the corresponding apertured
and having the later embedded therein to present
lugs of the ?ttings to be connected and the pipes 20 a ?rm interlock therebetween, outer serrations on
thereby securely coupled.
said sleeve, and a ?tting encircling said sleeve
and being adjustable longitudinallyof said pipe;
The inner faces of both parts of the coupling
said ?tting being ‘removably secured to said
?tting are formed with circularly extending ribs
l0 and they preferably terminate short of the ends
of the ?tting. These ribs are advantageously ‘of 25 ’ 3. In a porcelain pipe having a glazed surface,
substantially the same character as those on
' ‘an outer roughened surface adjacent an end of
said pipe and formed by projecting particles
the outer face of the sleeve 3 so that the ?tting
may be securely interlocked with the sleeve.
embedded in said pipe, a yieldable metallic sleeve
surrounding said roughened surface and having
I In the form of the invention illustrated in
Figure 3, the roughened or sanded outer sur 30 said projecting particles embedded therein, said
yieldable means extending longitudinally of said
face of the pipe is indicated by the reference
pipe beyond said roughened surface so as to pre
numeral II and the molded sleeve l2 shown
thereon, instead of extending substantially the
sent an interlocking shoulder abutting said rough- -
same distance longitudinally of the pipe as the
'ened surface, said sleeve forming an integral
roughened outer surface thereof shown in Figures 35, part of said pipe, outer serrations on said sleeve,
1 and 2, extends a substantial distance beyond
the inner edge of the roughened or sanded sur
face. In this way, a ledge or shoulder I3 is formed
in the sleeve abutting the inner edge of the
roughened surface which will serve to additionally 4:0
resist forces tending to pull the sleeve off the
outer end of the pipe. The multi-part coupling
?tting shown on the pipe in Figure 4 is‘identical
in construction with the ?tting illustrated in
Figures 1 and 2 and it is, therefore, identi?ed by
the same reference numerals as that ?tting.
and a ?ting removably secured to and surround
ing said sleeveand having inner serrations inter
lockingly engaging said sleeve serrations; said ~
?tting being adjustable on said sleeve 1ongi-,
tudinally of said pipe.
4. In aporcelain pipe having a glazed surface, ,
an outer roughened surface “adjacent an end of
said pipe and formed by projecting particles em
bedded in said pipe, a sleeve of yieldable material .
surrounding said roughened surface and having
said projecting particles'embedded therein, said
With the mold sleeve extending for a greater
sleeve extending’ longitudinally of said pipe
distance longitudinally of the pipe than the cou
beyond saidroughened surface so as to present
pling ?tting, as shown in Figure 4, the ?tting may
an interlocking shoulder abutting said roughened
not only be adjusted circumferentially or rotation 50 surface, outer serrationson said sleeve, and a ?t
ally but it may be also adjusted longitudinally
ting removably'secured to and surrounding said
of the pipe for a greater distance than would
sleeve and having inner serrations interlockingly
otherwise be the case.
engaging said sleeve serrations; said ?tting being
Various modi?cations and changes may be
adjustable on. said sleeve longitudinally and
made in details of the particular embodiment of 55 axially of said pipe.
the invention illustrated and described herein
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