MENTS IN UNIONS OR COUPLINGS FOR PIPES, HOSE AND OTHER ARTICLES
Year: 1885

page_text: I NATHAN THOMPSON of 23 Southampton Buildings in the County of Middlesex,
Marine Engineer, do hereby declare the nature of said Invention for IMPROVE-
MENTS IN UNIONS OR COUPLINGS FOR PIPES, HOSE AND OTHER ARTICLES to be as
follows:-
The invention has for its object improvements in unions or couplings for pipes,
hose and other articles whereby I obtain a joint capable of withstanding high
pressures combined with simplicity and cheapness of construction and facility of
manipulation.
In carrying my present invention into effect I form one part of the coupling or
union with a cylindrical socket and the other part with a cylindrical plug preferably
closely fitting the same; the inner face of the socket is formed with two, or it may
be more, projections and the plug is formed with a corresponding number of recesses
shaped so as to receive the said projections and by turning the parts upon each
other to hold them securely locked in a somewhat similar manner to what is known
as a bayonet joint. These recesses for the first part of their course run in a
direction longitudinally of the plug, then in a transverse or circumferential direction
and finally in a short return longitudinal direction.
The two parts of the coupling are each formed with an enlarged cylindrical
chamber or bore to receive a sleeve or tube of india rubber which is of such
thickness that its bore is equal to, or it may be slightly larger than, that of the
parts to be connected one or more spring rings hold such india rubber tube or
aleeve in position by forcing a part of the same into one or more annular recesses
in the enlarged chamber or bore of that part of the coupling carrying the socket,
or such sleeve or tube can be otherwise held in position.
The socket is formed deeper than the plug and with a cylindrical enlargement at
the bottom; in the bottom of the socket between it and the india rubber sleeve or
tube I place a short india rubber tube or other spring or springs and on the top
thereof I, in some cases, place a metal ring which is formed with a short descending
cylindrical portion which passes between the said spring or springs and the india-
rubber sleeve or tube.
The outer end or face of this metal ring is faced to fit against the end or face of
the nluo

page_text: The metal ring is formed with side slots to enable it when being placed in
position in the socket to pass the projections therein after which it is turned partly
round to retain it in position and if desired it may be then prevented from acci-
dental rotation by means of a stud or pin entering a groove or slot in said ring
which will however permit of end way motion thereto.
The two parts of the coupling are connected together by simply forcing them
together end wise and then giving a partial turn of one part in relation to the
other, when they will become securely locked together. In pressing the two parts
together the metal ring resting on the spring or springs is at first somewhat
depressed, then when the studs or projections reach the return portions of the
bayonet grooves, the said ring is forced forward by the said spring or springs and
thereby forces the plug outwards so as to bring the studs or projections into the
return portions of the bayonet grooves and there retain them against accidental
displacement. If desired the two parts of the coupling may be still further secured
by a spring or other catch or stop.
In cases where the metal ring is dispensed with the spring or springs will act
directly upon the end of the plug in a similar manner.
I provide the plug with a flange of the full diameter of the socket and I place
an india rubber ring between the parts to prevent the entrance of grit and dirt.
L
1007
N. THOMPSON.
By Harris & Mills,
23, Southampton Buildings,
Agents.

page_text: I NATHAN THOMPSON of 23 Southampton Buildings in the county of Middlesex,
Marine Engineer, do hereby declare the nature of the said invention for JMPROVE-
MENTS IN UNIONS OR COUPLINGS FOR PIPES HOSE AND OTHER ARTICLES and in
what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
The invention has for its object improvements in unions or couplings for pipes,
hose and other articles whereby I obtain a joint capable of withstanding high
pressures combined with simplicity and cheapness of construction and facility of
manipulation.
In carrying my present invention into effect I form one part of the coupling or
union with a cylindrical socket and the other part with a cylindrical plug preferably
closely fitting the same; the inner face of the socket is formed with two or it may
be more projections and the plug is formed with a corresponding number of recesses
shaped so as to receive the said projections and by turning the parts upon each
other to hold them securely locked in a somewhat similar manner to what is known
as a bayonet joint. These recesses for the first part of their course run in a direction
longitudinally of the plug, then in a transverse or circumferential direction and
finally in a short return longitudinal direction.
The two parts of the coupling are each formed with an enlarged cylindrical
chamber or bore to receive a sleeve or tube of india rubber which is of such
thickness that its bore is equal to or, it may be slightly larger than that of the
parts to be connected, one or more spring rings hold such india-rubber tube or
sleeve in position by forcing a part of the same into one or more annular recesses
in the enlarged chamber or bore of that part of the coupling carrying the socket or
such sleeve or tube can be otherwise held in position.
The socket is formed deeper than the plug thereby leaving a cylindrical space at
the bottom; in the bottom of the socket, between it and the india rubber sleeve or
tube, I place a short india rubber tube or other spring or springs and on the top
thereof I in some cases place a metal ring, which is formed with a short descending
cylindrical portion which passes between the said spring or springs and the india
rubber aleeve or tube.
The outer end or face of this metal ring is faced to fit against the end or face of
the plug.
The metal ring is formed with side slots to enable it when being placed in
position in the socket to pass the projections therein after which it may be turned
partly round to retain it in position and if desired it may be then prevented from
accidental rotation by means of studs or pins entering grooves or slots in said ring
which will however permit of endway motion thereto.
I provide the plug with a flange of the full diameter of the socket and in some
cases I place an india rubber ring between the parts to prevent the entrance of grit,
and dirt

page_text: to describe the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a longitudinal section, Figure 2 is a transverse section and Figure 3
is an exterior view of a coupling or union constructed according to my invention.
Figure 4 is a longitudinal section Figure 5 is an end view and Figure 6 is a section
similar to Figure 4 but taken at right angles thereto of part A of the union or
coupling with its internal fittings. Figure 7 is a longitudinal section and Figure 8
is an end view of part A without its interior fittings.
Figure 9 is an exterior view and Figure 10 is an end view partly in section of
part B of the union or coupling Figure 11 is a longitudinal section of part A
showing a slight modification and, Figure 12 is a side view partly in section, and
Figure 13 is an end view of parts thereof.
1
In all the figures like parts are marked with similar, letters. of reference.
In carrying my present invention into effect I form the part A of the coupling or
union with a cylindrical socket a and the part B with a cylindrical plug b preferably,
as close a fit as is consistent with the easy insertion and removal of said plug b into
and from the socket ä; the inner face of the socket,a is formed with two, or it may
be more, projections a¹, and the plug b is formed with a corresponding number of
recesses of shaped so as to receive the said projections a¹ and by turning the parts A
and B upon each other to hold them securely locked in a somewhat similar manner
to what is known as a bayonet joint. These recesses for the first part of their
course run in a direction longitudinally of the plug b then in a transverse or
circumferential direction and finally in a short return longitudinal direction.
The last mentioned portion of each groove b¹ is formed longer in its circum-
ferential direction than the projection a¹ acting in combination therewith, whereby
in the event of dirt or other matter entering the space between the flange b³ and
the end of the socket a a slight rotation of the parts A and B on each other may
be effected by which means such dirt or other matter will be broken up and caused
to fall out of such space after which the parts A and B can be readily disconnected.
The two parts of the coupling are each formed with an enlarged cylindrical chamber
or bore a² or 6 to receive a sleeve or tube c of india, rubber which is of such
thickness that its bore or internal diameter is equal to or it may be slightly larger
than that of the parts A and B. In the arrangement shown at Figures 1 to 10 a
spring ring d is employed to hold the india rubber tube or sleeve c in position by
forcing a part of the same into an annular recess a³ in the enlarged chamber or
bore a. The socket a is formed deeper than the plug b thereby leaving a cylin-
drical space at at the bottom which is a continuation of the bore or internal diameter
of the said socket a.
In the bottom of the socket a between it and the india rubber sleeve or tube
I place a spring consisting of a short india rubber tube e (or other spring or springs)
and on the top thereof I in some cases place a metal ring f which is formed with a
short descending cylindrical portion, which passes between the said -spring or
springs e and the india rubber sleeve or tube c.
The inner end of the india rubber tube e rests in a cylindrical recess a³ and the
cylindrical portion f¹ of the metal ting works within a cylindrical recess a whilst
the exterior diameter of the metal ring f is made to fit the bore or internal diameter
of the socket a by which means the said parts e and f are retained in their correct
position.
The metal ring is formed for the greater part of its circumference of such
diameter as to enable it when being placed in position in the socket a to pass the
projections a¹ therein after which it is retained in position by means of studs or
pins g entering grooves or slots f³ formed in projections f" in the circumference of

page_text: Baid ring which will however permit of endway motion thereto.
When using an
india rubber spring e it acts to prevent the entrance of dirt to the fittings.
In the modification represented at Figures 11, 12 and 13 the india rubber tube
or sleeve c is shown rivetted to the cylindrical extension f¹ of the ring ƒ by which
means said sleeve or tube c is securely held in its proper position.
The two parts A, B, of the coupling are connected together by simply forcing
them together endwise and then giving a partial turn of one part in relation to the
other when they will become securely locked together. In pressing the two
parts A, B, together the metal ring f resting on the spring or springs e is at first
somewhat depressed, then when on the turning of the parts the studs or pro-
jections a reach the return portions of the bayonet grooves b' the said ring fis
forced forward by the said spring or springs e which thereby forces the plug b
outwards so as to bring the studs or projections a¹ into the return portions of the
bayonet grooves 61 and there retain them against accidental displacement. If
desired the two parts A, B of the coupling may be still further secured by a spring
or other catch or stop as will be well understood but this addition I consider
unnecessary.
In cases where the metal ring fis dispensed with the spring or springs e will act
directly upon the end of the plug b in a similar manner.
I provide the plug 6 with a flange 6 of the full exterior diameter of the socket a
and if desired in order to prevent the entrance of grit and dirt an india rubber
ring h may be placed between the end of the socket a and the flange b' as shown
at Figures 1 and 3 in which case the said ring is held in position in an annular
groove 6 I have found however that this india rubber ring is unnecessary.
Unions or couplings constructed in the manner herein shown and described are
perfectly secure against accidental disconnection of the parts and against leakage
as on water passing through the same the india rubber sleeve or tube c is held, by
the pressure of the water, firmly against the walls of the enlarged cylindrical
chambers a 6 and the greater the pressure the more secure is the joint.
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. In unions or couplings constructing the part A with a socket a projections a¹
enlarged chamber or bore a cylindrical space a* and recesses a³ and a to act in
combination with an india rubber tube or sleeve o metal ring ƒ spring or springs e
and part B which has a plug b formed with returned bayonet grooves 6 and with
an enlarged chamber or bore 6' substantially as herein shown and described and for
the purpose stated.
b
2. The combination of socket a, projections a¹ enlarged chamber or bore a³
cylindrical space a plug 6 grooves b¹ enlarged chamber or bore 6 india rubber tube
or sleeve c and spring or springs e all constructed substantially as herein shown and
described and for the purpose stated.
8. The combination with the socket a and plug 6 of a spring or springs e with or
without a metal ring facting substantially as herein shown and described and for
the purpose stated.
NATHAN
THOMPSON.
By Harris & Mills,
23, Southampton Buildings,
Agents.