Improvements in Inflaters for Pneumatic Cycle Tyres, Footballs, and. similar Articles.
Year: 1891

page_text: Date of Application, 12th Sept., 1891
-Complete Specification Left, 7th Mar., 1892-Accepted, 9th Apr., 1392
PROVISIONAL SPECIFICATION.
Improvements in Inflaters for Pneumatic Cycle Tyres, Footballs, and.
similar Articles.
I EDWARD HENRY SEDDON of Marsland Road, Brooklands in the County of
Chester, Commercial Traveller do hereby declare the nature of this invention to
be as follows:-
My invention relates to inflaters or air-compressors for inflating cycle tyres, foot-
balls, air cushions and similar articles having to be inflated with compressed air and
consists in improved arrangements of said inflaters, the object of my invention
being to reduce the length of the inflater and make it more convenient to carry
while retaining the efficiency of the longer inflaters at present in use. I attain
this object by making the inflater with two barrels one sliding telescopically in the
other. I arrange a piston in the inner barrel in the usual way with cup leather
packing and make said barrel open or with an outlet at the bottom end and with.
the usual air inlet hole in the top cover of said barrel, through which cover the
piston rod fitted with a handle passes. The inner barrel may be fitted with a piston
with cup leather or other suitable packing at the bottom ends of said barrel, the
piston working in the outer barrel which is fitted with a cover through which the
inner barrel passes; or instead thereof a stuffing box preferably with cup leather
packing may be arranged at the top of the outer barrel for the inner barrel to work
through. The outer barrel has a cover preferably fitted with a back pressure valve
to the nozzle at the bottom end.
The action of this inflater is as follows: When the handle of the piston rod is.
pulled outwards, the piston moves up the inner barrel and when arrived at the top.
draws this barrel along with it out of the outer barrel till it is stopped by the cover
or stuffing box of the same, the air passing through the inlet hole in the cover of
the inner barrel and past the cup leather of the piston and filling the space inside
both barrels. When pushing the piston rod inwards, the piston moves down the
inner barrel till the handle comes against the top cover of the same, when the inner
barrel will be pushed down the outer barrel simultaneously with the piston and
further compress and force out the air into the article to be inflated.
Dated this 11th day of September 1891
R. J. URQUHART,
57, Burton Arcade, Manchester, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Inflaters for Pneumatic Cycle Tyres, Footballs, and
similar Articles.
I, EDWARD HENRY SEDDON of Marsland Road, Brooklands in the County of
Chester, Commercial Traveller 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 relates to inflaters or air compressors for inflating cycle tyres, foot-
balls, air cushions and similar articles having to be inflated with compressed air and
consists in improved arrangements or constructions of said inflaters, the object of
my invention being to reduce the length of the inflater and make it more convenient
to carry while retaining the efficiency of the longer inflater at present in use. I
attain this object by making the inflater with two barrels or cylinders in place of
one, one sliding telescopically in the other.

page_text: The manner in which I propose to carry out my invention is set forth in the
following statement, reference being had to the sheet of drawings appended
hereunto.
In the said drawings two views of inflaters made according to my invention are
shewn.
Fig. 1 represents a telescopic inflater having a larger barrel or cylinder A as the
stationary one, by which the air is ejected through the nozzle a, Fig. 2 having a
hollow piston rod Al terminating in a nozzle a through which the compressed air
is ejected.
Referring to Fig. 1 alone into the barrel A is fitted a smaller barrel B, as a
trunk piston having the packing in the form of a cup leather bfitted at one end of
the barrel in the manner shewn by preference, the end of said barrel being left
open at c.
The other end of the barrel is fitted with a cover d' through which a
piston rod C passes. The piston rod C is fitted with a piston D which is packed
preferably by means of a cup leather in the manner shewn. A ring cover and
guide d is fitted at one end of the barrel A, and at the other end is fitted a cover e
to which is also fitted a non-return valve f, and nozzle a. The piston rod C is
formed with a handle h which may be made of any convenient form. An air hole
or vent g is made in the cover d¹.
Referring now to Figure 2 which shews a modified form of inflater constructed
according to my invention, the hollow piston rod A' remains stationary when in
use, the nozzle a being formed thereto. To the upper end of said piston rod is
fitted a piston A having a passage c' through the centre and fitted with a packing
of by preference a cup leather & in the manner shown. The main portion of the
inflater consists of a cylinder B' sliding inside a cylinder C¹. The piston A²
aforesaid fits the cylinder B which is provided at its outer end with a guide ring
cover d and at its inner end with a packing consisting of by preference a cupped
leather as shewn, fitting the cylinder C. non-return valve f is fitted in the
piston A² and a vent or air hole is formed in the cover d at g'.
To the nozzle a any convenient connecting piece or supplementary nozzle may
be attached.
In place of packing the pistons with cup leathers as shewn, any other suitable
packing may be employed and the form of the pistons modified to any required
extent to suit such packing and allow air to be drawn in through the vent holes
past the pistons, and the barrels or cylinders may be formed with stuffing boxes
for the inner barrel and for a plunger piston in the latter to work through and this
piston at the inner end of the inner barrel made without any packing.
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
An air-pump or inflater having two cylinders or barrels of different diameters
fitted to slide one in the other in combination with a piston or plunger fitted to
slide in the cylinder of smaller diameter, and having outlet passage through and
air ejectment nozzle fitted to the larger cylinder end or to the plunger or piston
rod substantially as hereinbefore described and indicated in and by the accoin-
panying drawings.
Dated this 5th day of March 1892
R. J. URQUHART,
Manchester, Consulting Engineer and Patent Agent.