Improvements in Connections for Inflating Apparatus for Pneumatic Tyres of Wheels and for other uses.
Year: 1897

page_text: Date of Application, 14th May, 1897
Complete Specification Left, 12th Feb., 1898-Accepted, 2nd Apr., 1898
Improvements in Connections for Inflating Apparatus for Pneumatic
Tyres of Wheels and for other uses.
I, HENRY DYSON SIMPSON, of 12, Priory Place, Doncaster, in the County of
York, Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in connections for inflating apparatus for
pneumatic tyres of wheels and for other uses.
Difficulty is frequently experienced with existing arrangements of such apparatus
in quickly and satisfactorily connecting the stiff rubber tube which may be
fastened at one end of a large pump, on to the ends of the valve apparatus of the
tyres, unless some form of swivel joint is provided in the tube parts, to allow
of the relative turning of the parts.
Such swivels have been provided, but, so far as I am aware, there has been great
difficulty experienced in use in obtaining one that was perfectly air tight, that
worked freely and that at the same time could be made in a form not cumbersome
and which could be applied to various forms of valves in use.
According to my invention, I make the body of the swivel, attached to the
pump tube, in two pieces. The portion which is formed with an internal screw
thread to engage the screw threaded end of the valve may be milled to facilitate
handling and it is formed with another screw thread internally of larger diameter,
adapted to receive the correspondingly screw threaded outer end of a collar which
holds the enlarged end of a hollow metal connection, part of the neck of which
extends through the collar and is pushed into the rubber pump tube in the ordinary
way.
A leather, fibre or other suitable washer is placed around said neck and lying
between its enlarged end and the portion of the collar against which the enlarged
end abuts.
That part of the neck of the connection which extends through the collar is
screw-threaded and fitted with a corresponding nut which can be screwed up
against the outer end of the collar-drawing the enlarged end of the body, with the
washer intervening, against the inner side or end of that collar to make a tight
joint, or the collar may fit over the suitably threaded connecting end.
Supposing the pump connections according to this invention to be used upon
"Wood" valve and very
the projecting end of what is commonly known as a
generally used with Dunlop pneumatic tyres, the swivel end is connected thereto
in the ordinary way and by the end of the valve being caused to bed against the
enlarged end of the hollow metal connection a tight joint is made; but in the
case of a valve having only a short projecting threaded end such as is the case
with valves of what is known as the "Lucas" type the improved swivel con-
nection is screwed over this short screwed end until the outermost surface or
shoulder is bedded tightly against the leather washer usually provided around
that short end. Then the nut on the body of the connection being tightened as
already mentioned the joint is perfected.

page_text: To unscrew the swivel connection from the valve, the nut is screwed back
again.
It is preferable to so fix the two parts of the body together by firmly screwing or
otherwise, that the general body of users shall not be likely to loosen them thereby
avoiding loss of parts.
WM. BROOKES & SON,
55 and 56, Chancery Lane, London, Agents for the Applicant.
Improvements in Connections for Inflating Apparatus for Pneumatic
Tyres of Wheels and for other uses.
I, HENRY DYSON SIMPSON, of 12, Priory Place, Doncaster, in the County of
York, 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 improvements in connections for inflating apparatus for
pneumatic tyres of wheels and for other uses.
Difficulty is frequently experienced with existing arrangements of such apparatus
in quickly and satisfactorily connecting the stiff rubber tube which may be
fastened at one end of a large pump, on to the ends of the valve apparatus of the
tyres, unless some form of swivel joint is provided in the tube parts to allow
of the relative turning of the parts.
Such swivels have been provided, but, so far as I am aware, there has been great
difficulty experienced in use in obtaining one that was perfectly air tight, that
worked freely and that at the same time could be made in a form not cumbersome
and which could be applied to various forms of valves in use.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 shows a longitudinal sectional view of my improved connection according
to one form.
Figs. 2. 3, 4 and 5 show details separately.
Figs. 6 and 7 show, by end view and side view respectively, the connection drawn
to a smaller scale than the previous figs.
Fig. 8 shows a side view, partly in section, of my improved connection according
to a modified form of construction, on the same scale as Fig. 1.
According to my invention, I make the body of the swivel, attached to the
which is formed with an internal screw
pump tube, in two pieces. The portion
thread to engage the screw threaded end of the valve may be milled to facilitate
handling and it is formed with another screw thread c of larger diameter, adapted
to engage a corresponding screw thread on a collar d, which holds the enlarged
end e of a hollow metal connection e, part of the neck of which extends through
the collar and is pushed into the rubber pump-tube f in the ordinary way.
A leather, fibre or other suitable washer g is placed around said neck and lies
between its enlarged end e¹ and the portion d' of the collar. That part of the
neck of the connection which extends through the collar d is screw threaded and
fitted with a correspondingly threaded nut h, which nut can be screwed up against
the outer end of the collar d, drawing the enlarged end e¹ of the body, with the
washer intervening, against the inner side or end of that collar d to make a
tight joint.

page_text: In the form of connection shown by Figs. 1 to 7 the part a has an external
thread c engaging with an internal thread formed in the collar d. In the modifica-
tion shown by Fig. 8 an internal thread on the part a screws upon an external
thread on the collar d.
Supposing the pump connections according to this invention to be used upon
the projecting end of what is commonly known as a "Wood" valve and very
generally used with Dunlop pneumatic tyres, the swivel end is connected thereto
in the ordinary way and by the end of the valve being caused to bed against the
enlarged end e¹ of the hollow metal connection a tight joint is made; but in the
case of a valve having only a short projecting threaded end such as is the case
with valves of what is known as the "Lucas" type the improved swivel con-
nection is screwed over this short screwed end until the outermost surface or
shoulder is bedded tightly against the leather washer usually provided around
that short end. Then the nut h on the body of the connection being tightened as
already mentioned the joint is perfected.
To unscrew the swivel connection from the valve, the nut is screwed back
again.
It is preferable to so fix the two parts of the body together by firmly screwing or
otherwise, that the general body of users shall not be likely to loosen them, thereby,
avoiding loss of parts.
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. The construction and use in combination of parts of a swivel connection for
inflating apparatus and the like comprising a part or head e¹ to be pressed to a
suitable seating by a valve end to form a tight joint connection, substantially as
described and shown in the accompanying drawings.
2. In combination with the swivel connection referred to in Claim 1, a nut or
follower, such as 7, which when loosened permits the connection to freely swivel,
but the screwing up of which makes a tight joint, substantially as herein described
and illustrated.
3. The improved swivel connections constructed, arranged and operated sub-
stantially as hereinbefore described and illustrated by the drawings Figs. 1 to 7
or alternatively by Fig. 8.
WM. BROOKES & SON,
55 and 56, Chancery Lane, London, Agents for the Applicant.