Improvements relating to Revolving Pipe Joints.
Year: 1891

page_text: Date of Application, 15th Sept., 1891
Complete Specification Left, 15th June, 1892—Accepted, 6th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements relating to Revolving Pipe Joints.
I, ROBERT ULMANN of 10 and 11 Chausséestrasse Berlin in the Empire of
Germany Engineer do hereby declare the nature of this invention to be as
follows:-
The invention relates to the packing of revolving or revolvable pipe joints and
to the construction of the said joints to provide for the compressing and tightening
of said packing. The two ends of the pipes are respectively provided with two
circular outstanding flanges and these two flanges are coupled together and enclosed
within a U-shaped hood made in two parts meeting and secured together on a
diametrically dividing plane for the purpose of assembling the parts. Within this
hood is a screw nut taking on screw threads around the end of one of the pipes,
the hood may have a feather taking into a recess in the nut so that revolving the
hood revolves the nut and compresses the packing as the nut is more or less screwed
up. A spiral spring may be used in conjunction with the nut or in place of the
latter. The counter pressure due to the elasticity of the spring or of the packing
or of both is met by the collars or flanges on the pipes pressing outwards against
the hood. The said flanges may he prolonged cylindrically to meet each other or
the one may be prolonged to meet the other, or they may be prolonged cylindrically
to overlap each other.
Dated this 15th day of September 1891.
HERBERT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements relating to Revolving Pipe Joints.
ROBERT ULMANN of 10 and 11 Chausseestrasse, Berlin in the Empire of
Germany, Engineer 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 :-
The invention relates to the packing of revolving or revolvable pipe joints and
'to the construction of the said joints to provide for the compressing and tightening
of said packing. The two ends of the pipes are respectively provided with two
circular outstanding flanges and these two flanges are coupled together and enclosed
within a U-shaped hood made in two parts meeting and secured together on a
diametrically dividing plane for the purpose of assembling the parts. Within
this hood is a screw nut taking on screw threads around the end of one of the pipes,
the hood may have a feather taking into a recess in the nut, so that revolving the
hood revolves the nut and compresses the packing as the nut is more or less screwed
up. A spiral spring may be used in conjunction with the nut or in place of the
latter. The counter pressure due to the elasticity of the spring or of the packing
or of both is met by the collars or flanges on the pipes pressing outwards against
the hood. The said flanges may be prolonged cylindrically to meet each other, or
the one may be prolonged to meet the other, or they may be prolonged cylindrically
to overlap each other."
The annexed drawing illustrates methods of carrying this invention into
practice.
Fig. 1 is a longitudinal section of a system of three pipes a ba which con-
stitutes a universal joint.

page_text: Fig. 2 is a plan view thereof.
Fig. 3 shows a double system of pipes.of the same construction.
In these figures the pipes a and b are respectively, furnished with flanges c and d
each of which is cylindrically prolonged, the one prolongation being of smaller
diameter than the other to fit within the latter; within the annular cavity enclosed
or bounded by these flanges is placed. the packing, ring f which is held tight by the
spring gh being a washer therefor. This spring 9 tends to thrust the flanges d
apart and thus causes the backs of the flanges: to bear firmly against the mantle e
which is made of a U-shape in section and constructed in two semi-annular
halves ee (Fig. 2) with. ears 11 fastened together by the pintles or bolts. m m
The inner tube i closes the joint on the inside.
じ
In the modification shown in Fig. 4 the pipes.a bare provided not only with the
overlapping flanges cd but with other cylindrical flanges f arranged to meet
the spring g being arranged outside the flangest and the packing ring inside the
flanges and retained by the rings k k.
Fig. 5 represents a similar construction, except that the flanges cd do not over-
lap but simply meet as do the flanges t.
In the modification shown in section in Fig. 6, a nut or cylindrical screw threaded.
sleeve o is screwed upon the cylindrical extension of the flange d and its end presses
against the face of the other flange c and so keeps the flanges at the proper distance
apart to bear securely in the mantle e. It might also be used to compress the
packing p which is here inserted behind the interiorly flanged head of the nut.
The spring g keeps this packing firmly against the abutment r.
Fig. 7 is a plan view of this coupling.
Fig. 8 shows in longitudinal section and. Fig. 9 in cross section, a further modi-
fication of this nut in which the whole is considerably simplified. The cylindrical
extensions of the flanges c d are omitted and the nut screwed on the end of one
pipe presses the packing f¹ against the other flange, a feather or feathers s on the
nut o engaging in a recess or recesses in the mantle e enables the nut to be tightened
by simply turning the mantle."
Having now particularly described and ascertained the þature of this inven-
tion and in what manner the same is to be performed H declare that what I
claim is.
1. In a revolvable pipe joint the two flanges cd with or without cylindrical
extensions meeting or overlapping, in combination with the divided mantle e and a
spring g or nut o adapted to force the flanges apart and a packing ring, the whole
arranged as described and substantially as illustrated!
2. In the construction described in Claim 1 the feather and groove or other
prismatic guiding for the nut o in mantle e for the purpose described.
Dated' this 15th day of June 1892:
HERBERT & Co.,.
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.