Improvements in Joining or Connecting Tubes or Pipes for Conveying Liquids, Steam, Gas, or Compressed Air.
Year: 1890

page_text: Date of Application, 9th Aug., 1890
Complete Specification Left, 17th Nov., 1890-Accepted, 20th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvements in Joining or Connecting Tubes or Pipes for
Conveying Liquids, Steam, Gas, or Compressed Air.
We ROWLAND WATKIN LEWIS and THOMAS SAMUEL LEWIS, trading as
Edwin Lewis and Sons, of Patent Tube Works, Wolverhampton in the County
of Stafford, Tube Manufacturers and WILLIAM HOWARD LEWIS of Goldthorn
Hill, Wolverhampton aforesaid Commercial Clerk do hereby declare the nature of
this invention to be as follows
The said invention consists of the combination of parts hereinafter described for
joining or connecting tubes or pipes for conveying liquids, steam, gas or compressed
air whereby a very efficient and durable joint is produced without cutting threads
upon or otherwise weakening the ends of the tubes or pipes.
We flange or turn back at a right angle the end of each of the tubes to be joined
and we join together the flanged ends in the following manner. Between the flanges
of the tubes we place a cast or wrought iron or other metal collar having in cross
section somewhat the figure of the letter T, that is, it consists of a flat ring having
at its outer edge a cross piece or rim which rim forms a right angle at each side of
the collar, the said angles being of the same width as the flanged ends of the
tubes.
Under these angled parts of the collar the flanged ends of the tubes are pressed to
form the joint, the said angled parts or outer rim of the collar preventing the
packing of the joint being blown out when the tubes or pipes are used at a very
high pressure. In order to press together the flanged ends of the tubes and hold
them between the collar, we use a loose gripping ring or flange on the outside of
each tube and behind the flanged end of the tube, the said loose gripping rings or
flanges being drawn and fastened together by screw bolts and nuts. The inner side
of each of these gripping rings is provided with a projecting boss or shoulder of the
same depth as the flanged ends of the tubes. By means of these projecting bosses
or shoulders, the gripping rings when they are drawn together in forming the joint
press the flanged ends of the tubes against the collar situated between them.
In joining or connecting together the ends of two tubes we proceed as
follows-
We place between the parallel flanged ends of the two tubes the T-shaped or
recessed collar herein before described and in the recesses of the said collar a
packing of lead, india rubber, gutta-percha, hemp, asbestos or other packing
material is placed. The gripping rings being placed around the ends of the tubes
and at the back of the flanges, the said rings are coupled and drawn together by
screw bolts and nuts. By the drawing together of the loose gripping rings, their
shoulders press the flanged ends of the tubes against the packed collar and cause
them to grip the said collar and thereby form a very efficient and durable joint.
Dated this 9th day of August 1890.
W. T. WHITEMAN,
Agent for the Applicants

page_text: COMPLETE SPECIFICATION.
Improvements in Joining or Connecting Tubes or Pipes for
Conveying Liquids, Steam, Gas, or Compressed Air.
We ROWLAND WATKIN LEWIS and THOMAS SAMUEL LEWIS trading as
Edwin Lewis and Sons of Patent Tube Works Wolverhampton in the County
of Stafford Tube Manufacturers and WILLIAM HOWARD LEWIs of Goldthorn
Hill Wolverhampton aforesaid Commercial Clerk, do hereby declare the nature of
the said invention and the manner in which the same is to be performed to be
particularly described and ascertained in and by the following statement:-
The said invention consists of the combination of parts hereinafter described for
joining or connecting tubes or pipes for conveying liquids steam gas or compressed
air, whereby a very efficient and durable joint is produced without cutting threads
upon or otherwise weakening the ends of the tubes or pipes.
We flange or turn back at a right angle the end of each of the tubes to be joined
and we join together the flanged ends in the following manner. Between the flanges
of the tubes we place a cast or wrought iron or other metal collar having in cross
section somewhat the figure of the letter T that is, it consists of a flat ring having
at its outer edge a cross piece or rim which rim forms a right angle at each side of
the collar, the said angles being nearly of the same width as the flanged ends of the
tubes. Under these angled parts of the collar, the flanged ends of the tubes are
pressed to form the joint, the said angled parts or outer rim of the collar preventing
the packing of the joint being forced or blown out when the tubes or pipes are used
at a very high pressure. In order to press together the flanged ends of the tubes
and hold them against the collar we use a loose gripping ring or flange on the out-
side of each tube and behind the flanged end of the tube, the said loose gripping
rings or flanges being drawn and fastened together by screw bolts and nuts.
The inner side of each of these gripping rings is provided with a projecting boss
or shoulder of the same depth as the flanged ends of the tubes. By means of these
projecting bosses or shoulders the gripping rings when they are drawn together in
forming the joint press the flanged ends of the tubes against the collar situated
between them.
Figure 1 of the accompanying drawing represents in longitudinal section and
Figure 2 in end elevation the ends of two tubes or pipes joined or connected
together according to the said invention Figure 3 represents separately in end
clevation and cross section, partly in edge view, the T shaped or right angled
packing collar which we use in the joint.
The same letters of reference indicate the same parts in the several figures of the
drawing.
:
a, bare the two tubes or pipes to be joined end to end and a², 62 are the flanged
or turned back ends of the tubes or pipes; e, 2 is the T shaped or angular collar of
the joint. It will be seen by an examination of the drawing that the said collar
consists of a flat ring having at its outer edge a cross piece or rim e" which forms
a right angled shoulder at each flat side of the collar for receiving the flanged
ends a², of the tubes a, and the packing rings d of lead, india rubber, gutta
percha, hemp, asbestos or other packing material; ee are the loose gripping rings
or flanges on the outside of the tubes and behind the flanged ends a, 2 of the
tubes, the said loose gripping rings or flanges e, e being drawn and fastened together
by the screw bolts and nuts at The gripping Hanges e, e are placed on the
tubes from their ends before the said ends are flanged or turned back. It will be
seen by an examination of Figure 1 that the inner faces of the gripping flanges e e
are provided with projecting bosses or shoulders of the same depth as the flanged
ends a², 2 of the tubes. These projecting bosses or shoulders serve to press when
the gripping flanges ee are drawn together the flanged ends of the tubes against
the packing of the collar c and under the angled parts or shoulders of the rim c
of the said collar.

page_text: In joining or connecting together the ends of the two tubes a, b we proceed as
follows: We place between the parallel flanged ends a², 2 of the two tubes, the
Tshaped or recessed collar c, and in each of the recesses or under the angled
parts or rim a packing d is placed. The loose gripping rings or flanges e, e being
placed around the ends of the inbes a, b and at the back of the flanges a², the
said rings e, e are coupled and drawn together by the screw bolts and nuts. By
the drawing together of the loose gripping rings e, e their immer bosses or shoulders
press the flanged ends of the tubes against the packed collar and cause
them to grip the said collar as represented in the drawing and thereby form a very
efficient and durable joint, the angled or shouldered parts at of the collar serving
as outward abutments for the packing of the joint and preventing the said packing
being forced or blown out when the joint is subjected to high pressure.
The projecting bosses or shoulders on the inner faces of the gripping rings e, e
may be dispensed with and loose bosses in the form of rings be used instead thereof
as illustrated in Figure 4, where the loose bosses or rings situated between the
flanged ends ², of the pipes or tubes a and the inner faces of the gripping
flanges are marked g. The action of the parts of this modified joint is the
same as that first described and corresponding parts are marked with the same
letters of reference.
For the purpose of facilitating the storage or transit of the gripping rings or
flanges e, e and to permit of their being placed on the tubes after the ends of the
tubes have been flanged, each ring or gripping flange may be made in three pieces
fitted together in the manner represented in Figure 5. In the said Figure 5 the
parts of the gripping ring on the right hand tube or pipe are represented fitted
together and the parts of the gripping ring on the left hand tube or pipe a are
represented separated; Figures 6 and 7 represent the three parts of which each of
the gripping rings is composed. Each gripping ring consists of the large outer flat
ring, shown separately in Figure 7 capable of being placed over the flanged ends
of the tube, and the smaller inner ring made in halves marked i, i provided at its
outer edge with a shoulder kon which the inner edge of the outer ring may seat
itself. The inner face of the divided ring i has the projecting boss or shoulder
for pressing the flanged end of the tube against the T collar c, c² as before described.
In putting these compound gripping rings or flanges in their places the half rings i, i
are passed from opposite sides of the tube onto the said tube (see the left hand side
of Figure 5) and the larger outer rings are passed by a sliding motion onto the
shoulders of the closed half rings ii as illustrated at the right hand side of
Figure 5. By the engagement of the larger outer rings h, with the shoulders k, k
of the smaller rings the latter rings are bound together and the compound rings
or flanges are used for forming the joint in the manner described with respect to the
gripping rings herein first described and represented in Figures 1 and 2.
Figure 8 represents partly in elevation and partly in section and Figure 9 in end
elevation a pipe joint constructed according to the said invention in which the
gripping or holding flanges are made in halves marked respectively, the said half
Hanges being connected together by the screw bolts and nuts at m m and resembling
gland flanges. Each half Hange is provided with a taper groove at the middle
of its inner face as represented in the sectional part of Figure 8 so as to form it into
a cap. The cap like flanges 1, are passed from opposite sides onto the flanged ends
of the two tubes a, b and over the T shaped collar ce between the said flanged ends
and the said flanges are bolted together. By the drawing together of the
flanges, their taper recesses cause them to press the flanged ends of the tubes
against the packed collar c c² and grip them firmly between the said collar.
The collar e in this modification may be made of lead. In this case no packing
need be used, the gland flanges when secured together forcing down the head of
the lead collar on the top edges of the flanged ends of the tubes a, b as well as
forcing the said flanged ends against the flat part of the collar.
In order to prevent the packing from escaping at the meeting edges of the gland
flanges the meeting; edge of one of the said flanges may be made, slightly to

page_text: project and the meeting edge of the other gland flange be recessed to receive the
projections on the first named flange so that when the two flanges are drawn together
no space is left for the escape of the packing between them. The wedge shaped
projections crossing the space between the meeting edges of the flanges 1, 1 are
marked c, x in Figure 9.
Having now particularly described and ascertained the nature of the said inven-
tion and the manner in which the same is to be performed we declare that we claim
as the said invention of "Improvements in joining or connecting tubes or pipes for
conveying liquids steam gas or compressed air" :-
First The combination in a joint for joining or connecting tubes or pipes of the
Tshaped collar c, consisting of a flat ring having at its outer edge a cross head
or rim thereby forming a right angled projection or annular shoulder at each side of
the collar under which projections or shoulders the flanged ends of the tubes or
pipes are pressed and held and the packing prevented from being forced or blown
out the said T shaped collar and flanged ends of the pipes or tubes being used in
conjunction with loose gripping rings or flanges or loose gripping rings or flanges
and separate bosses substantially as herein before described and illustrated in
Figures 1, 2, 3, and 4 of the accompanying drawing.
Secondly-The combination with the T shaped collar cc³ and the flanged ends
of the pipes or tubes of gripping rings or flanges each made in three parts for the
purposes and substantially as hereinbefore described and illustrated in Figures 5,
6 and 7 of the accompanying drawing.
Thirdly The combination with the T shaped collare either packed or
unpacked and the flanged ends of the pipes or tubes of the cap like gland or divided
flanges for fixing the parts of the joint substantially as hereinbefore described
and illustrated in Figures S and 9 of the accompanying drawing.
ليمي
Ney 180Q
ROWLAND WATKIN LEWIS.
THOMAS SAMUEL LEWIS.
WILLIAM HOWARD LEWIS.