Improvements in the Means of Connecting Pipes or Tubes.
Year: 1894

page_text: Date of Application, 24th July, 1894
Complete Specification Left, 24th Apr., 1895-Accepted, 21th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in the Means of Connecting Pipes or Tubes.
I, JOHNSON MILLS, of Chapel Street, Salford, in the County of Lancaster,
Engineer, do hereby declare the nature of this invention to be as follows:
This invention relates to a means for connecting the ends of pipes or tubes.
For this purpose I employ unions that are constructed from a bloom of steel or
iron in the manner described in the Specification of my Patent No. 5909 of 1893.
In this present invention, I employ a union of a like form but with an internal
flange as b shown in the accompanying drawing.
The tube or pipe c is formed with a shoulder to rest on this internal flange, the
lower end of the tube being inserted therein and slightly projecting beyond
said flange.
The tube or pipe is screwed into the flange at in the usual manner, and the
lower portion is then expanded in the manner ordinarily employed for expanding
boiler tubes.
The aforesaid unions may have flat meeting surfaces, or may form spigot and
socket joints as represented on the drawing at c³.
1004
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for the Applicant.
Improvements in the Means of Connecting Pipes or Tubes.
I, JOHNSON MILLS, of Chapel Street, Salford, in the County of Lancaster,
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 :-
This invention relates to a means for connecting the ends of pipes or tubes:
the object of this invention is to dispense with the couplings and wrought or cast
metal flanges such as are ordinarily employed.
For this purpose I employ unions that are constructed in the manner hereinafter
described and as represented on the accompanying sheet of drawings in which
Fig. 1 is a plan and Fig. 2 a transverse section of my improvement :
Fig. 3 shows my invention applied for connecting a pipe to an elbow or bend.
In these views similar letters refer to similar parts.
In this invention I form unions such as a with an internal flange 6 from a bloom
of steel or iron by stamping in suitable dies by means either of a drop hammer or
other forces. The tube or pipe c is formed with a shoulder 6' to rest on the
aforesaid internal flange 6 the lower end of the tube being inserted therein and
slightly projecting beyond said flange. The tube or pipe is screwed into the flange
at c¹ in the ordinary way, and the lower portion is then expanded in the manner
ordinarily employed for expanding boiler tubes. The aforesaid unions may have

page_text: flat meeting surfaces or may have spigot and socket joints as represented in the
drawing.
Having now particularly described and ascertained the nature of this my said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
les. In unions that are employed for connecting the ends of pipes or tubes the
construction of said unions with an internal flange as b produced from a bloom of
steel or iron by stamping in suitable dies, said flange being formed to receive the
end of a pipe or tube, and which is expanded therein, substantially as hereinbefore
described.
2nd. In unions that are employed for connecting the ends of pipes or tubes, the
construction and formation of said unions, and in combination therewith, the ends
of the tubes or pipes and the means whereby said tubes or pipes are connected,
substantially as hereinbefore described.
Dated this 23rd day of Anril 1895
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for Applicant.