An Improved Means or Device_for Coupling or Connecting Nozzles or Outlet Attachments to Receptacles for Containing Gases or Fluids under Pressure or to their Outlet Valves and for Analogous Purposes.
Year: 1888

page_text: Date of Application, 17th Aug., 1888
Complete Specification Left, 7th May, 1889-Accepted, 17th Aug., 1889
PROVISIONAL SPECIFICATION.
An Improved Means or Device_for Coupling or Connecting Nozzles
or Outlet Attachments to Receptacles for Containing Gases or
Fluids under Pressure or to their Outlet Valves and for
Analogous Purposes.
I, LEONARD CHAPMAN of Connaught Mansions in the City of Westminster,
Engineer to Brin's Oxygen Company Limited do hereby declare the nature of this
Invention to be as follows:-
My Invention relates to means or device for coupling or connecting nozzles or
outlet attachments to receptacles for containing gases or fluids under pressure or to
their outlet valves and is more especially designed for use in attaching to the outlet
valve of the receptacles for containing oxygen under pressure the device to which a
length of tubing is secured for conducting to the required place the said oxygen but
my invention it will be evident can be used for other analogous purposes. I will
will describe it as applied to that purpose. The object of my Invention is to provide an
attachment or coupling of such a nature that the liability to the parts becoming
damaged or lost is reduced to a minimum. According to my Invention I provide
in the valve or other part to which the outlet attachment is to be applied a recess
which is screwed internally. At the bottom of this recess is the seating for the plug
of the outlet attachment to bear against. The said outlet attachment consists of the
said plug which is at the lower end of a perforated stem and on this stem is a
collar and between this collar and the shoulder formed by the upper end of the
plug is situated a male screw provided with wings or other means of turning it.
This male screw enters the aforesaid screwed recess and as the said. screw is
screwed home the plug is forced down to its seating. The outlet attachment may
be connected to the valve portion or to some convenient part of the receptacle by
means of a chain or the like.
1000
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
An Improved Means or Device for Coupling or Connecting Nozzles
or Outlet Attachments to Receptacles for Containing Gases or
Fluids under Pressure or to their Outlet Valves and for
Analogous Purposes.
I LEONARD CHAPMAN of 232 Camberwell New Road in the County of Surrey
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 :-
My Invention has for its object to provide valves or closures for bottles or vessels
for containing fluids under pressure which valves or closures are more efficient
in use and less liable to be injured than are such valves or closures as ordinarily
constructed.
Figure 1 of the accompanying drawings is a side view, Figure 2 is an end view and
Figure 3 is a longitudinal section of a device constructed according to my invention.
Figure 4 shows the valve proper and its stem separately and Figure 5 is a section of
the valve proper showing also the lower part of the stem. Figures 6 and 7 are
corresponding views of a modification:
A is the body of the valve and B is a part of the gas bottle to which it is shown
attached. a a is the way through the body which way is opened or closed by the

page_text: valve proper (C). This valve is attached to the lower end of the spindle D which is
screwed in the hole e therefor in the body A. The said spindle is provided with a
square or equivalently shaped head for turning it, and is packed by the packing
ring over which is placed the metal or hard ring 9 which is pressed down upon the
packing ring by the screwed cap or nut G which has at its upper part a cup or
receptacle ginto which liquid can be placed and this will enable any leakage of gas
through the joint to be readily detected by the gas in escaping rising through the
liquid and then the leak can be remedied by tightening up the cap or nut G to com-
press the packing. This cap also serves to protect the valve spindle from injury.
The valve C is preferably of hard bronze and is attached to the end of its spindle so
that it need not turn with the spindle and so grind injuriously on its seating. This is
shown in Figures 4 and 5 as being effected by making the spindle D with a rounded
end d seating in a depression in the back of the valve proper C and with a groove
at d² into which the inwardly turned ends of the spring side pieces c are sprung. Or
1 make (as shown in Figures 6 and 7) the valve (with a groove ² corresponding to
that at d² in the end of the spindle. I place a split spring ring in the groove d²
and then when the spindle end is pressed into the valve recess the rounded parts c³ at
the upper end cause the ring h to be compressed completely into the groove d² so that
it allows the spindle end to enter the recess in the back of the valve but as soon as the
ringh comes opposite the groove c² it springs out and the part which then protrudes
from the recess & engages with the recess c². In either of the arrangements the
spindle can be turned without turning the valve proper.
The outlet nozzle which is attached to the valve body and to which the outlet tube
or the like is secured consists of the pipe piece I screwed on its outside with a screw i
engaging with a screw 2 in a coupling piece J the screws i and j' having a different
number of turns per inch or being of a different pitch from that of the screw ; on the
exterior of the coupling piece and of the screw with which it engages and which is
made as an internal screw in the valve body A which also has in it the conical
seating. When the coupling piece J is screwed in place by means of its wings j³ the
conical piece m on the piece I bears against the conical seating 7 the differential
character of the screws giving great power for enabling the closure to be very
perfectly effected. When the coupling piece J is removed the conical end m can be
withdrawn into the hollow part of the coupling by screwing back the tube piece in its
screw in the coupling.
It will be seen that the internal screw thread k being in the valve body instead of
an external screwed nipple piece as usual much liability to breakage or injury of the
fitting parts when the parts I and J are removed is prevented.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In a valve or closure for gas bottles and the like a body part A having an
internal screw thread k and a nipple piece or coupling with an external screw thread j
engaging therewith substantially- as described.
2. In or for valves or closures for gas bottles or the like a combined nipple
piece (I, m) and coupling J with differential screw threads i ; and j k substantially
as and for the purpose described.
3. In or for valves or closures for gas bottles or the like a combined nipple piece I
and coupling J engaged by screw threads i 7 and with a housing in the coupling
piece into which the bearing end of the nipple piece can be withdrawn substantially as
and for the purpose described.
Dated thin 7th do..
M
1000