Improvements in Tyre Inflator in Cycle Framework.
Year: 1896

page_text: Date of Application, 25th June, 1896
Complete Specification Left, 25th Mar., 1897-Accepted, 1st May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Tyre Inflator in Cycle Framework.
HENRY DYSON SIMPSON, of 2 Grove Bank, Duffield Road, Derby, Engineer,
do hereby declare the nature of this invention to be as follows:-
Improved fittings for utilizing the tubular framework of cycles as an inflator.
First by a hollow metallic plug fixed in any straight tube of the framework, which
plug is to be made in two parts to be drawn together by means of a screw, thereby
forcing a ring of any compressible material such as leather, rubber &ct. against the
walls of the tube and, thus 1 form an air-tight joint. I hold the plug in position
by a hollow screw passing through the wall of the tube into the interior of plug &
utilizing this screw as the nipple on which to fix a flexible tube to connect the pump
with the tyre. The plug inay contain a valve which may be of any suitable
description. I insert a piston-rod in the tube fitted with any form of plunger
capable of making an air-pump. If the piston-rod is used in the seat-tube I make
it capable of being adjusted to any required length either by making it telescopic
or in some other manner. At the opposite end of the piston-rod to which the
plunger is fitted, I fit a collar which will rest on top of the seat pillar and prevent
the plunger at the bottom of the stroke striking against the plug. Said collar may
be made to fit into a slot or V to steady the rod when at rest.
I may fit in the top of the seat pillar a bush or bearing for the rod to work
through, which by means of a screw will grip the rod. The pump is worked with
a detachable handle and I arrange that this handle may be carried in the cross-
piece of the T pillar.
Dated this 23rd day of June 1896.
H. DYSON SIMPSON.
COMPLETE SPECIFICATION.
Improvements in Tyre Inflator in Cycle Framework.
I HENRY DYSON SIMPSON, 2 Grove Bank, Duffield Road, in the Town and
County of Derby, 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 the inflation of pneumatic tyres, and consists of
improved fittings for utilizing the tubular fra-nework of the cycle or velocipede
as an inflator, to be hereinafter fully described reference being had to the
aving drawings

page_text: Fig. 4 shows a sectional view of one of the tubes and seat pillar fitted to be used
as an inflator.
Fig. 5 is an outside view of a portion of the seat pillar.
Fig. 6 shows by side view, partly in section, and Fig. 7 by end view, a tool to be
described.
Figs. 8, 9, 10, 11, 12, 13 and 14 show details of the plug to be referred to.
Figs. 15 and 16 show by sectional view and plan view respectively a modified
form of some of the parts.
Fig. 17 shows an alternative method of applying the plug of the inflator to the
framework.
In carrying out my invention I employ a plug a fixed in any straight tube of the
framework, herein shown in the tube A. This plug is formed with an air
passage a, and is made in two parts a² and a to be drawn together by means of
a screw a', thereby forcing a ring or disc a of compressible material such as rubber
against the walls of the tube A and thus I form an air tight joint. I hold the plug
in position by a hollow screw a passing through the walls of the tube A into the
air passage a of the plug, and this screw a is utilized as a nipple on which to fix a
flexible tube (see Fig. 1) to connect the pump with the tyre. Over the orifice a¹
in the screw a I bind a strip of elastic material as which serves as a valve to
regulate or control the passage of the air. The flexible tube b is shown connected
to the front wheel, in Fig. 1, by broken lines, and to the rear wheel by dotted lines,
thus forming a connecting passage between the pump in the tube A and the tyre of
either wheel. When not in use the tube may be readily disconnected from the
nipples on the wheels and pump.
I insert a piston rod e in the tube A fitted with a piston or plunger c', said piston
being connected to the piston rod c by means of a screw c. The tube A is formed
smooth to allow the piston to work freely. If the, piston rod is used in the seat
tube, as herein shown, I make it telescopic to enable it to be adjusted to any
required length. The rod c³ can be slidden up or down the tube c and secured in
its adjusted position by means of the uut e', the screw threaded end of the tube c
being split at to allow it to grip the rod when the nut is screwed down. At the
end of the piston rod opposite to that to which the plunger is fixed, I fix a pin c
which will rest upon the top of the seat pillar B and prevent the plunger at the
bottom of its stroke striking against the plug. A V shaped notch d is formed in
the scat pillar to serve as a seating for the pin c and to prevent turning or twisting
of the piston rod. A spring e' is fixed onto the rod c3 and bears against the side of
the hole d' in the seat pillar thus preventing rattling of the piston rod. The end
of the piston rod is screw-threaded, at e to receive a handle by means of which
the pump is operated. This handle is slidden into the hollow seat pillar B when
not in use, as shown in full line position Fig. 2. The ferrule 10 of the handle is
formed with slits so that when the handle has been pushed into its place it is
held there by spring pressure. The stem c¹ is bent to clear the rod c. The
handle is shown in operative position by dotted lines Figs. 1 and 2.
In order to insert the plug a into its place in the tube a tool such as is shown in
Figs. 6 and 7 is used. The head e of the tool is slotted at el el to form a "bayonet
joint" with which to engage the projecting ends of a pin a provided in the screw at
of the plug. The plug is inserted so that the lower end is opposite a hole A¹ in
the tube A. The screw a of the nipple is then inserted into the screw-threaded
opening, a leather or other washer a forming a seating for the end of the screw a.
The screw a of the plug is then turned by means of the tool, thus drawing the
parts a and a together and expanding the rubber disc a so as to press against the
inside of the tube and form an airtight packing.
In some cases a liner is inserted into the end of the tube, as at A2, to give
greater strength. In which case I form the tube a0 of the plug of such length as
will enable the plug a to come above or beyond the liner A2; otherwise the tube, a
may be dispensed with.

page_text: Sometimes I prefer to place the air outlet more out of sight, as shown in Fig. 17,.
the tube al being bent to clear the axle A³.
In some cycles the horizontal cross piece or seat pillar B is dispensed with, the
saddle being connected directly to the seat tube A or a prolongation of the same.
I adapt the piston rod to this form of cycle as shown in Figs. 15 and 16. A plug f
is placed on the upper end of the tube A and held thereon by means of screws f¹.
This plug has a V-shaped notch to receive the pin on the piston rod..
Holes may be provided to facilitate entrance of air.
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 1
claim is :-
1. In a pneumatic tyre inflator combined with a straight tube of the frame-work.
of a cycle or velocipede to form the pump barrel the application and use of an
expansible plug capable of being fixed at or removed from any convenient position
in said tube, as and for the purpose set forth..
2. In a pneumatic tyre inflator combined with a tube of the framework of a cycle.
or velocipede to form the pump barrel, the use of an expansible plug capable of
being fixed at or removed from any convenient position in the said tube and having
connected therewith an air valve, connecting tubing and locking nipple for connection.
to the flexible tube to convey the compressed air to the tyre nipples, substantially
as set forth.
3. In a pneumatic tyre inflator combined with a tube of the framework of a
cycle or velocipede to form the pump barrel the use of an expansible adjustable.
and removable plug capable of being fixed at or removed from any convenient.
position in such a tube and having connected therewith an air valve, connecting-
tubing and locking nipple for connection to the flexible tube for conveying the
compressed air to the tyre nipples in combination with a piston, having a telescopic
piston rod having means for adjusting the working length thereof and a removeable.
handle, all substantially as and for the purpose set forth.
4. The combination, arrangement and use of parts of tyre inflator apparatus,.
having an expansible, adjustable, and removeable plug applied in a pump barrel.
formed by a tubular part of the framework of a "cycle" or velocipede in combina-.
tion with a telescopic and adjustable piston rod and piston, substantially as and for
the purpose set forth and shewn in the accompanying drawings.
5. In a pneumatic tyre inflator apparatus wherein the pump barrel is constituted.
by a tube of the framework and a removeable and adjustable plug is employed of
the kind mentioned, the use of a piston having a telescopic piston rod with handle.
capable of being disconnected and stowed, and means for preventing the twisting
or turning and rattling of said rod, all substantially as and for the purpose set-
forth.
L 1007
WM. BROOKES & SON,
55 & 56 Chancery Lane, London, Agents for the Applicant..