Improvements in Pipe Couplings.
Year: 1897

page_text: Date of Application, 22nd Mar., 1897
Complete Specification Left, 21st Dec., 1897-Accepted, 5th Feb., 1898
Improvements in Pipe Couplings.
I, RUDOLPH OTTO MEYER, of 288 Wandsbecker Chaussee, Hamburg, in the
Empire of Germany, Manufacturer, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to a pipe coupling or connection, in the construction of
which the following points have been laid down
(1) The speedy formation of a reliable joint and readiness in loosening the
same.
(2) Simplicity, adapting it for unskilled labour.
(3) Connection, and disconnection of the pipes with simple tools and even in
positions not readily accessible.
(4) Adaptability for use even with pipes not formed with joining sleeves or
sockets.
I will now describe a method of joining cast iron socket or faucet pipes by
means of this coupling. The plain end of one pipe engages in a socket or sleeve of
the other pipe to be connected. Over the first pipe is passed a loose or movable
collar which embraces.the elastic packing. The rear or outer end of this collar
is made of helical form. The socket or sleeve and the collar are surrounded by
a second collar having upon its inner circumference preferably four noses or
projections opposite to cne another, such projections bearing against the outer
edges of the socket and of the inner collar.
In order that the outer collar may be slipped over, slots are provided in the
socket or sleeve and in the inner-collar for the said projections.
When the outer collar is turned in the tightening direction of the helical
surface of the inner collar, two projections of the outer collar turn upon the flat
surface of the socket, whilst the two other projections follow the ascending helix
of the inner collar. Such turning of the outer collar therefore causes the socket
or sleeve to enter the annular recess of the inner collar containing the packing
ring, thus producing compression of the packing ring or elastic washer and
ensuring the tightness of the joint.
In order to prevent the packing from being forced out through the slots and
the pipes from being turned in opposite directions, on tightening up the coupling,
small pieces of sheet iron may be placed in the said slots.
The tightening and slackening of the coupling is effected by means of a hammer
and a flat piece of iron by lightly striking the ribs formed upon the outside of
the outer collar and thus causing it to turn in the proper direction.
In a modified form of connection for pipes having plain ends the said ends fit into
a central double socket section and each end carries a loose collar, one of these
collars being formed with a right handed and the other with a left-handed helix
upon its outer end; both collars being provided with an elastic packing. In other
respects the construction and manipulation are the same as for the connection first
described.

page_text: In a further modification the loose tightening collar having a helix formed
upon its rear or visible end, is replaced by a fixed collar upon one of the pipes
to be joined. The tightening collar of the other pipe is, as in the first construc-
tion a fixed collar or flange having a flat outer surface.
The projections upon the loose outer collar slide, in the manner above described,
upon the rear or free ends of the two fixed collars. The elastic packing washer is
surrounded by the front and widened socket-like portion of the fixed collar.
This latter method of carrying out my invention is more especially suitable
when the pipes to be joined will be exposed to high pressure.
The pipe coupling above described possesses the following essential advantages
over the socket or sleeve and flange connections hitherto employed.
The construction of the coupling will owing to its form, that is to say the
outwardly visible helical surfaces, be readily understood by an unskilled person,
so that incorrect manipulation and consequent overstraining and breaking of the
connection when tightening or slacking the same is obviated.
By the use of this improved coupling, pipe conduits can be laid in a much
shorter time than has hitherto been possible, as the coupling is complete in
itself not requiring the addition of hemp lead, bolts, or the like.
All that is necessary to enable the coupling to be either tightened or slackened
is that it shall be accessible at any one point of its whole circumference in such
a manner that the piece of flat iron which is used for the purpose may rest against
one of the ribs long enough for this rib to be forced round so as to make the next
accessible.
In this manner, when several lines of piping are carried one above the other,
even when they are built in narrow conduits, or placed under frame work or in
places where they can only be got at with difficulty, each coupling is under com-
plete control and may readily be tightened; likewise the removal of a portion
of the pipe requiring repair or renewal can be entirely confined to such portion.
The breaking up or separation of piping provided with this coupling into its
separate constituent parts may be easily effected without injury to such parts,
so that these latter can be used again.
The coupling is constructed in such a manner that should a part of it break
the joint will still remain perfectly tight.
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er
1. 1007
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
I, RUDOLPH OTTO MEYER, of 288 Wandsbecker Chaussee, Hamburg, in the
Empire of Germany, Manufacturer, do hereby declare the nature of this inven-
tion 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 pipe coupling or connection, in the construction of
which the following advantages are realized, viz.:-(1) A speedy formation of a
reliable joint is effected, which can be readily loosened when desired. (2) Sim-
plicity of construction and manipulation, so that unskilled labour can be em-
ployed. (3) Connection, and disconnection of the pipes with the aid of simple
tools and in positions not readily accessible. (4) Adaptability for use even with
pipes not formed with joining sleeves or sockets.
In order to make my invention more clearly understood I will. proceed to

page_text: describe the same by way of example with reference to the accompanying drawing
in which:-
Fig. 1, is a sectional side elevation of my improved coupling illustrating the
joining of cast iron socket or faucet pipes;
Fig. 2, is a cross section of Fig. 1 on the line I-II;
Fig. 3, shows a modification of the coupling as applied for connecting butt-
ended pipes, and
Fig. 4 is a modification of the tightening collar.
Similar letters refer to similar parts throughout the several views.
The plain end of the pipe a, Fig. 1, engages in a socket or sleeve 6 of the
other pipe c to be connected. Over the pipe a is passed a loose or movable collar d
which embraces the elastic packing e. The rear or outer end of this collar dis
made of helical form. The shoulder k of the socket or sleeve b and the collar d
are surrounded by a second collar f having upon its inner circumference preferably
four noses or projections g' and g² opposite to one another, such projections bearing
against the shoulder k of the socket 6 and of the outer edges of the inner
collar d.
In order that the outer collar f may be slipped over, slots h are provided in
the socket or sleeve band in the inner collar d for the said projections gl
and g².
When the outer collar f is turned in the tightening direction of the helical
surface of the inner collar d, the two projections g¹ of the outer collar f turn
upon the annular projecting surface of the shoulder k of the socket b, whilst the
two other projections 2 follow the ascending helix of the inner collar d. Such
turning of the outer collar therefore causes the socket or sleeve to enter the
annular recess of the inner collar d containing the packing ring e, thus producing
compression of this packing or elastic washer and ensuring the tightness of the
joint.
In order to prevent the packing e from being forced out through the slots h
and the pipes from being turned in opposite directions, on tightening up the
coupling, small pieces of sheet iron may be placed in the said slots h.
The tightening and slackening or uncoupling of the device is effected by
means of a hammer and a flat piece of iron by lightly striking the ribs formed
upon the outside of the outer collar f and thus causing it to turn in the proper
direction.
In a modified form of connection for pipes having plain butt ends (see Fig. 3)
the said ends fit into a central double socket section and each end carries a
loose collar, one of these collars d being formed with a right handed and the
other with a left-handed helix upon its outer end; both collars being provided
with an elastic packing. In other respects the construction and manipulation
are the same as for the connection first described.
In a further modification (see Fig. 4) one of the loose tightening collars d
having an helix formed upon its rear or visible end, is replaced by a fixed collar d'
upon one of the pipes to be joined. The tightening collar of the other pipe is,
as in the first construction is formed by a fixed shoulder k having a flat outer
surface.
The projections g' g2 upon the loose outer collar f slide, in the manner above
described, upon the rear or free ends of the two fixed collars d' and k. The elastic
packing washer e is surrounded by the front and widened socket-like portion &²
of the fixed collar d'.
This latter method of carrying out my invention is more especially suitable
when the pipes to be joined will be exposed to high pressure.
The pipe coupling above described possesses the following essential advantages
over the socket or sleeve and flange connections hitherto employed.
The construction of the coupling will, owing to its form, that is to say the
outwardly visible helical surfaces be readily understood by an unskilled person,

page_text: so that incorrect manipulation and consequent overstraining and breaking of the
connection when tightening or slacking the same is obviated.
By the use of this improved coupling, pipe conduits can be laid in a much
shorter time than has hitherto been possible, as the coupling is complete in itself
not requiring the addition of hemp, lead, bolts or the like.
All that is necessary to enable the coupling to be either tightened
or slackened
is that it shall be accessible at any one point of its whole circumference in such
a manner that the piece of flat iron which is used for the purpose may rest
against one of the ribs long enough for this rib to be forced round so as to make
the next accessible.
In this manner, when several lines of piping are carried one above the other,
even when they are built in narrow conduits, or placed under frame work or in
places where they can only be got at with difficulty, each coupling is under com-
plete control and may readily be tightened; likewise the removal of a portion of
the pipe requiring repair or renewal can be entirely confined to such portion.
The breaking up or separation of piping provided with this coupling into its
separate constituent parts may be easily effected without injury to such parts,
so that these latter can be used again.
The coupling is constructed in such a manner that should a part of it break,
the joint will still remain perfectly tight.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:
1. An improved pipe coupling consisting of two collars d fitting loosely over
the free ends of the pipes to be connected and being provided upon their outer
ends with helix-shaped faces, and of a tightening collar f having projections on
its inner circumference and surrounding the collars d, the projections being
designed to bear against the outer helix-shaped edges of the collars d, substan-
tially as and for the purpose set forth.
2. The herein described pipe coupling in which one of the movable collars d
is replaced by a fixed shoulder or flange k having a flat outer surface, substantially
as and for the purpose set forth.
3. The herein described pipe coupling in which the movable collar d is replaced
by a similar collar fixed to, or made in one piece with, the pipe, substantially
as and for the purpose specified.
4. In pipe couplings of the kind herein described the arrangement of ribs i
or the like upon the outer tightening collar f for applying a hammer or flat
iron piece in order to turn the said collar f in the proper direction substantially
as and for the purpose set forth.
01
1
0
D
1007
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.