Improvements in Parts of Pneumatic Tyre Inflators.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Parts of Pneumatic Tyre Inflators.
I, ALFRED NICHOLAS, of Water Street, in the City of Birmingham,
Manufacturer, do hereby declare the nature of this invention to be as follows:
My invention has relation, principally, to the metallic attachment ends of the
flexible connections of pneumatic tyre inflators, and has for its object, to prevent
the twisting of the connection or the turning of the instrument when screwing the
metallic attachment end onto the valve of the tyre.
In carrying out my improvements, I take a drum-shaped body part, with a large
axial hole up its middle, and with a tubular tail piece to which the rubber tube is con-
nected, directed from one side thereof. The hole through the tail piece terminates in
an annular chamber running around the middle of the inside walls of the hollow
body, wherethrough an inside-screwed plug, terminated by a cap at its upper end,
and adapted to screw upon the wormed end of the valve, passes and therein
swivels, and is prevented from being withdrawn by the spreading of the mouth end
outwards into a slight flared entrance.
The head has a milled edge, whilst the crown end of the screw box or inside-
screwed plug is chambered and has a transverse hole running from it and coming
opposite the annular chamber of the body, so that when the connection has been
screwed upon the screwed stalk of the valve, the air passage is left clear or free
from being choked.
When the connection is made, the swivelling screw plug is simply rotated by the
head when it screws onto the stalk of the valve, without the necessity of twisting
or turning the inflator as the screwing-on proceeds.
I propose to fit to the connection, a separate attachment for converting.the con-
nection of one type of valve, such as the Dunlop, into another type, such as the
"Silvertown," and this I accomplish by making the attachment in the form of a
double-ended stalk, separated by a milled edged flange. One part of the stalk is
screwed, say, to the Dunlop gauge, and the other is screwed to the Silvertown gauge,
so that a pump adapted for one type of valve can be instantly converted for use
with another type of valve.
The pump may
consist of a barrel, having working within it, a piston terminating
the inner end of a hollow piston rod, whose outer and other end, to which the
flexible connection is attached, has a foot or L-shaped rest end, which is placed
upon the ground and the foot of the user placed thereon as the handle is worked.
Dated this 27th day of August 1895.
ALFRED NICHOLAS,
By Henry Skerrett,
Agent for Applicant.

page_text: 1, ALFRED NICHOLAS, of Water Street, in the City of Birmingham,
Manufacturer, 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 relation to the metallic attachment ends of the flexible con-
nections of pneumatic tyre inflators, and has for its object, to prevent the twisting
of the connection or the turning of the instrument when screwing the metallic
attachment end onto the valve of the tyre.
In carrying out my improvements, I take a drum-shaped body part, with a
large axial hole up. its middle, and with a tubular tail piece to which the rubber
tube is connected, directed from one side thereof. The hole through the tail piece
terminates inwardly in an annular chamber running around the middle of the
inside walls of the hollow body, wherethrough an inside-screwed and swivelling
plug, terminated by a cap at its upper end, and adapted to screw upon the wormed
end of the valve, passes and therein swivels, and is prevented from being withdrawn
by the spreading of the mouth end outwards into a slight flared entrance.
The head has a milled edge, whilst the crown end of the screw box or inside-
screwed plug is chambered and has a transverse hole running from it and coming
opposite the annular chamber of the body, so that when the connection has been
.screwed upon the screwed stalk of the valve, the air passage is left constantly clear
or free from being choked.
When the connection is being made, the flexible connection and inflator are
held firmly in the hand at right angles to the direction of the valve and the
swivelling screw plug is simply rotated by the head when it screws onto the stalk
of the valve, without the necessity of twisting or turning the inflator as the
screwing-on proceeds as is now commonly necessary.
I propose to fit to the connection, a separate attachment for converting the
connection of one type of valve, such as the Dunlop, into another type, such as
the "Silvertown," and this I accomplish by making the attachment in the form of
a double-ended stalk, separated by a milled edge flange. One part of the stalk is
screwed, say, to the Dunlop gauge, and the other is screwed to the Silvertown
gauge, so that a pump adapted for one type of valve can be instantly converted
for use with another type of valve.
Figure 1 of the accompanying drawing represents a pneumatic tyre inflator with
the flexible connection with an attachment eud constructed according to my inven-
tion, whereby the same is screwed onto a valve without twisting the inflator or its
flexible connection.
Figure 2 is an elevation of the foot or rest end of the inflator and Figure 3
an underside plan of the same.
Figure 4 is a front elevation of my new or improved attachment.
Figure 5 is a vertical section of the same and Figure 6 shows the primary parts
separately.
Figure 7 is a topside plan of Figure 4.
Figure 8 is a horizontal section of Figure 5 upon the dotted line x.
The same letters of reference indicate corresponding parts in Figures 1 to 8 of
the drawing.
In the valve attachment a; a¹ is the hollow and chambered body part of the
same and end bearing holes a³, a³, wherethrough the hollow stalk b', of the
swivelling plug b, upwardly passes and there rotates and is prevented from being

page_text: withdrawn by turning the edges of the outer end oº, over onto the nared entrance a“,
to the said body.
a is the tubular tail piece, which is annularly serrated on its outer surface to
prevent the removal of the flexible connection d' of the inflator d, (which is
provided with a rest foot d³) and has an axial hole a, up its middle inwardly
terminating in the annular chamber a', in the body.
6 is the milled head of the swivelling plug, 6 the transverse hole lending from
the inside of the same to the annular chamber a', of the body and 6 the inside
screwed and chambered mouth or entrance which is screwed onto the tail of a
valve until the end of the same abuts against the shoulder 6, thus preventing the
choking of the hole 6, by the valve tail and preserving a constant free passage for
air from the inflator through the attachment to the valve.
d is a leather or like washer interposed between the opposed parts of plug and
body to render the attachment air tight.
Figure 9 represents, in vertical section, a modification of my invention, in which
the annular air space is formed around the outer periphery of the plug instead of
in the body of the attachment.
Figure 10 is a part horizontal section of Figure 9 upon the dotted line .'.
Figure 11 is an elevation of the plug separately and
Figure 12 a topside plan of the same.
In Figures 9, 10, 11 and 12, a is the attachment, a¹ the body of the same and
a the tubular tail piece. b is the swivelling plug, rotating in the said body, and
having an inside screwed and chambered body part 6, with an air passage b³,
leading to an annular air passage &, formed around the plug b, at a part coincident
with the hole a, through the tail of the body.
Figure 13 represents a vertical section of my improved attachment, fitted with
supplementary nipple for converting a connection made for use with one type
of valve, such as the "
Dunlop," for use with another type, such as
"Silvertown."
Figure 14 represents the nipple separately.
the
a is the attachment and the nipple, having an outside screwed end f¹, taking
into the screwed entrance 6, to the attachment a, which, without the nipple, is
designed for use with a Dunlop valve, and another outside end, which takes into
the tail of a " Silvertown or other pattern valve.
"
Figure 15 represents a further form of swivelling connection constructed
according to the first part of my invention.
a is the attachment, a' the hollow body and the tail end of same, with an
axial hole a, through its middle. bis a swivelling plug with a screwed
entrance, and a chambered hole 6, up its middle lignable with the axial hole a³,
of the body part. 6 is an inclined plane and annular keep groove, wherein the
inclined tip 9, of the set pin g, comes and when screwed home impinges against
the incline and forces the plug home against the washer g², interposed between it
and the body. h is a cup-leather or other packing ring for making the connection
air tight.
An outside part a³, of the body is milled for the purpose of screwing the
attachment onto and off a valve.
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 :-
:-
First. In flexible connections for pneumatic tyre inflators, a swivelling end
attachment with the swivelling plug directed and rotating at right angles to the
body part, and screwed onto and off a valve without rotating the flexible connection
substantially as described and set forth in Figures 1 to 13.
Secondly. An end attachment for the flexible connections for pneumatic tyre
inflators, consisting of a swivelling plug adapted to be rotated onto or into the

page_text: end of a valve and to swivelly work within a body part, both plug and body part
being provided with thoroughfare air passages, substantially as described and set
forth.
Dated this with don of Tu 190A
ALFRED NICHOLAS,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicant.