A New or Improved Joint or Coupling for Metallic Pipes or Tubes.
Year: 1890

page_text: Date of Application, 23rd Oct., 1.90
Complete Specification Left. 26th Feb., 1891-Accepted, 28th Mar., 1891
PROVISIONAL SPECIFICATION.
A New or Improved Joint or Coupling for Metallic Pipes or Tubes.
I, JOSEPH AIRD, of Wellington Tube Works, Great Bridge, Tipton, in the
County of Stafford, Manufacturer of Iron and Steel Tubes, do hereby declare
the nature of this invention to be as follows:-
-
My invention relates to a new or improved joint or coupling for metallic pipes
or tubes, and has for its object to obtain a simple form of joint which will be less
costly to produce, easier to connect, and which will withstand greater pressure-than
heretofore.
For this purpose I form upon the exterior of each of the meeting ends of the
two sections or lengths of the pipe or. tube to be connected together, a broad
flange or collar and I form in the adjacent or meeting faces of each of the flanges
or collars a channel or groove for the reception of asbestos or other suitab
packing or in some cases I might dispense with the groove or channel in one of
such faces.
Upon each section of the tube I place a loose clamping collar which takes an
abutment against the collar or flange of the tube and at suitable positions around
the clamping collars I form holes for the reception of headed bolts which at their
opposite ends are threaded and fitted with nuts by the aid of which the parts may
be forced together.
One of the clamping collars is formed with an annular flange thereon which
covers the joint formed by the adjacent or meeting faces of the flanges or collars
of the tubes and thus renders it impossible for the packing to blow out and the
other of such clamping collars is formed to overlap or receive the flange of the
other of such clamping collars so as to form a broad bearing to these parts and
thus efficiently guide them in their movements.
Upon screwing up the nuts the adjacent or meeting faces of the collars or flanges
of the tubes will be forced together compressing between them the packing
within the groove or channel and the clamping collars will cover the joint and
firmly bind the parts together, thus making a perfectly tight joint capable of
withstanding great pressure.
By these means I am enabled to dispense with the costly screw coupling hitherto
employed for joining together two lengths of tube and by reason of the elements
of my coupling being of a very simple character and therefore easily produced, I
attain the desired end with considerably less expense.
Another important advantage of my invention is that two lengths of pipe may
be securely coupled in a much shorter space of time than by means of the screw
coupling hitherto employed.
Dated this 23rd day of October 1890.
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.
COMPLETE SPECIFICATION.
A New or Improved Joint or Coupling for Metallic Pipes or Tubes.
I, JOSEPH AIRD, of Wellington Tube Works, Great Bridge, Tipton, in the
County of Stafford, Manufacturer of Iron and Steel Tubes, do hereby declare the
nature of this invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
My invention relates to a new or improved joint or coupling for metallic pipes
or tubes and has for its object to obtain a simple form of joint which will be less

page_text: Figure 1 is a longitudinal view partly in section representing portions of two
lengths of pipe or tube united by means of my invention and
Figure 2 is an end view thereof.
a represents portions of two lengths or sections of pipe or tube upon the exterior
of the meeting ends of which is formed a broad flange or collar a¹ and in the
adjacent or meeting faces of each of these flanges or collars a' is formed an annular
channel or groove a² in which is placed a ring of asbestos or other suitable
packing or if desired the groove or channel a² in one or both of such faces
may be dispensed with whilst still retaining the packing as will be readily
understood.
Upon each length or section a of the tube or pipe is placed a loose clamping
collar c c which takes an abutment against the collar or flange a' of its respective
length or section a of tube and at suitable positions around the clamping
collars c c* holes c¹ c* are formed for the reception of headed bolts d which at their
opposite ends are threaded and fitted with nuts d¹ which bear against the face of
the clamping collar c* and by the aid of which the clamping collars ce* and conse-
quently the two lengths or sections a of pipe or tube may be forced together
thereby tightly compressing the ring of asbestos or other packing 6 between
them.
That one c* of the clamping collars is formed with an annular flange c*² thereon
which covers the joint formed by the adjacent or meeting faces of the flanges or
collars a¹ of the two sections or lengths of tube a and thus renders it impossible for
the ring of packing to blow out whilst the clamping collar c* is recessed or
formed with a shoulder c* which takes the necessary abutment against the flange
or collar a¹ of the length of tube a.
The other one c of the clamping collars is formed with an annular recess (2 so that
it will receive and overlap the flange c** of the clamping collar c* and thus form

page_text: a broad bearing to these parts and efficiently guide them in their movements whilst
this clamping collar c is recessed or formed with a shoulder c3 similar to the
shoulder 3 of the clamping collar c* and for a similar purpose.
Upon screwing up the nuts d' the adjacent or meeting faces of the collars or
flanges a of the lengths or sections a of tube or pipe will be forced together thereby
compressing between them the ring of packing lying within the grooves or
channels a² and the clamping collars c c will cover the joint and firmly bind the
parts together thus making a perfectly tight joint capable of withstanding great
pressure.
I would have it understood that in lieu of the holes c¹ c*1 in the clamping
collars e c* I may employ open ended slots and thus facilitate the putting together
of the parts and with the same object I may employ other means than the bolts.
and nuts d d for forcing the clamping collars together and I may form the
flanges a¹ and clamping collars c* of other shapes than those shown in the
accompanying drawings.
By these means I am enabled to dispense with the costly screw coupling hitherto
employed for joining together two lengths of pipe or tube and by reason of the
elements of my coupling being of a very simple character and therefore easily
produced I attain the desired end with considerably less expense.
Another important advantage of my invention is that two lengths of pipe or
tube may be securely coupled in a much shorter space of time than by means of
the screw coupling hitherto employed.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A joint or coupling for metallic pipes or tubes consisting of a fixed flange or
collar upon each of the lengths of pipe to be connected a ring of packing material
interposed between such Hanges two loose clamping collars abutting against the
flanges of the tubes and means for forcing the clamping collars together substan-
tially as herein shown and described.
2. A joint or coupling for metallic pipes or tubes consisting of a fixed flange or
collar upon each of the lengths of pipe to be connected, an annular groove formed
in one or both of the flanges, a ring of packing material located in the groove,
two loose clamping collars abutting against the flanges of the tubes and means
for forcing such clamping collars together substantially as herein shown and
described.
3. A joint or coupling for metallic pipes or tubes consisting of a fixed flange or
collar upon each of the lengths of pipe to be connected two loose clamping collars.
abutting against the flanges of the tubes one provided with an annular flange to
cover the joint and the other formed to overlap or receive such annular flange and
means for forcing such clamping collars together substantially as herein shown and
described.
4. A joint or coupling for metallic pipes or tubes consisting of a fixed flange or
collar upon each of the lengths of pipe to be connected, an annular groove formed
in one or both of such faces, a ring of packing material located in the groove two
loose clamping collars abutting against the flanges of the tubes one provided with
an annular flange to cover the joint and the other formed to overlap or receive
such annular flange and means for forcing such clamping collars together substan-
tially as herein shown and described.
Dated this 26th day of February 1901
WHITE & WOODINGTON,
27, Southampton Buildings, London, Agents.