An Improved Joint for Coupling Pipes and other articles.
Year: 1891

page_text: Date of Application, 13th May, 1891
Complete Specification Left, 15th Feb., 1892-Accepted, 19th Mar., 1892
PROVISIONAL SPECIFICATION.
An Improved Joint for Coupling Pipes and other articles.
We, EDWARD CHARLES DAVIS, of Penrith House, 190 Peckham Rye, London,
S.E., and THOMAS BALDWIN, of 20 Ivydale Road, Nunhead, London S.E.,
Engineer, do hereby declare the nature of our said invention to be as follows:-
The object of our invention is to effect improvements in the method of coupling
pipes, rods, shafts, standards, and other articles of a like nature.
In carrying out our invention we insert the ends of the pipes or other articles to.
be coupled, into cylindrical collars having gripping teeth tapered off to a fine edge,
so as to render. the same elastic. Screw threads are formed on the collars for
receiving nuts. One end of each nut is screw-threaded to fit the screw upon the
collar. The other end, of the nut is formed with a reduced internal diameter, and
tapered towards the extremity.
After inserting the tube in the collar, (using white lead or other joint making
material) the nut is screwed up tightly; the tapered end of the collar compresses the
tapered gripping teeth, upon the surface of the pipe or other article, and thus makes
a perfectly secure and fluid-tight joint.
The collars may be formed to receive one, two, or any other number of pipes or
rods, as required, for forming unions,. couplings or junctions.
GEO. DOWNING,
8, Quality Court, London, W.C., Agent for Applicants.
COMPLETE SPECIFICATION.
An Improved Joint for Coupling Pipes and other articles.
We, EDWARD CHARLES DAVIS,' of Penrith House, 190 Peckham Rye, London
S.E., and THOMAS BALDWIN, of 20 Ivydale Road, Nunhead, London S.E.,
Engineer, do hereby declare the nature of our, said invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement:―
+
The object of our invention is to effect improvements in the method ut coupling
pipes, rods, shafts, standards, and other articles of a like nature.
In carrying out our invention we insert the ends of the pipes or other articles to
be coupled, into cylindrical collars having gripping teeth tapered off to a fine edge,
so as to render the same elastic. Screw threads are forined on the collars for
receiving nuts. One end of each nut is screw-threaded to fit the screw upon the
collar. The other end of the nut is formed with a reduced internal diameter, and
tapered towards the extremity.
After inserting the tube in the collar, (using white lead or other joint making
material) the nut is screwed up tightly; the tapered end of the collar compresses
the tapered gripping teeth upon the surface of the pipe or other article, and thus
makes a perfectly secure and fluid-tight joint.
The collars may be formed to receive one, two, or any other number of pipes or
rods, as required, for forming unions, couplings or junctions.
And in order that our said invention may be particularly described and ascer
tained, reference is hereby made to the accompanying drawings, in which similar
letters of reference indicate corresponding parts.
Fig. 1 is an elevation, partly in section, showing our method of uniting two pipes,
end to end.

page_text: Fig. 2 is an elevation of the collar piece shown in Fig. 1.
Fig. 3 shows our method of uniting three or more pipes to one collar piece.
a is the collar piece, which may be of any required length, and may have one, two,
three or more tapered ends to receive any number of pipes, rods, or other articles:
and may be of straight, elbow, T, or other form. aa are screw threads for the
nuts d d. a a² are the tapered ends, and a³ are saw cuts made in the tapered ends,
whereby the gripping teeth at are rendered flexible, and capable of being jammed
upon the pipes by the coned nuts dd, whereby a perfectly secure joint is
made.
Fig. 3 shows the method of forming several unions to one collar piece a. The
pipes are secured by the nuts d, as above described.
c represents a nut with
a solid end, for stopping one of the joints if necessary. A solid plug is inserted in
the tapered end, and the nut or cap c is screwed over it so as to jam the gripping
teeth upon the plug.
White lead or other joint making material may be used in joining pipes and
analogous articles.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is
1. The improved joint for coupling pipes and other articles, consisting of one or
more collar or collars, having screwed, coned and divided end or ends, to form
gripping teeth at in combination with coned nuts or caps for compressing the gripping
teeth upon the pipe or other article to be united thereto, substantially as herein-
before described and illustrated by the drawings.
2. The general construction, arrangement, and combination of the several and
respective parts, together forming our invention of an improved joint for coupling
pipes and other articles, substantially as herein before described and illustrated by
the drawings.
Dated 15th Fab190D
GEO. DOWNING,
8, Quality Court, London, W.C., Agent.