Improved Air or Gas Compressor, applicable also as a Blowing Apparatus, Pump, and Exhauster.
Year: 1894

page_text: Date of Application, 13th Mar., 1894
Complete Specification Left, 13th Dec.. 1894-Accepted, 19th Jan., 1895
PROVISIONAL SPECIFICATION.
Improved Air or Gas Compressor, applicable also as a Blowing
Apparatus, Pump, and Exhauster.
We, JENKIN LEWIS, Engineer, of 59 Plasturton Avenue, and WALTER
SAMUEL LLEWELLYN, Iron Founder, of 51 Portmanmoor Road, East Moors,
both of Cardiff in the County of Glamorgan, do hereby declare the nature of this
invention to be as follows:-
The invention consists of an improved and simplified construction of apparatus
for compressing air, which is also applicable as a blowing apparatus, pump and
exhauster..
For this purpose we employ a vessel, one part of which is formed of cast or
wrought iron or other suitable metal, and is provided with the necessary inlet and
outlet valves proportioned to the capacity of the apparatus; the other part of the
vessel is formed of a flexible sheeting of any suitable material, but preferably of
india-rubber, with a layer or layers of canvas or other suitable woven material
inserted therein. The vessel may be of a hollow spherical form, or it may be
elliptical or egg shaped or of other desired and suitable form. The movable
flexible portion has a reciprocating motion imparted to it, either direct from any
suitable motive force, or by means of a crank shaft receiving rotary motion in any
convenient way from a prime mover.
In conjunction with the flexible portion of the vessel is arranged a rigid body,
externally shaped to a suitable fit for the flexible and rigid parts of the vessel,
and which acts as a squeezer or presser. The squeezer or presser and the
flexible portion of the vessel are connected together at their respective crowns by
any suitable means.
By moving the said squeezer or presser backward and forward, it draws and
presses the flexible part for the charging and expulsion strokes respectively of
the air, gases or fluids, according to the purpose for which the apparatus may
be employed.
When inflated, the vessel forms a more or less completely spherical, elliptical
or other shaped body, and at the completion of the expelling stroke, the flexible
portion is pressed, by means of the squeezer or presser herein before referred to,
fully into the rigid portion of the apparatus.
The
apparatus may be constructed either with single or double action, that is to
say, for the double action it would be arranged in duplicate in any convenient.
manner, but the following arrangement is preferred.
Two vessels constructed as before described are arranged in line, at a suitable
distance apart; intermediate of such vessels is a double acting squeezer or presser,
which, when forced to the end of its stroke in the one direction, presses the flexible
portion of one vessel fully into the rigid portion thereof and draws the flexible
portion of the other vessel to its fullest extent out of the rigid portion thereof, and,
in the opposite stroke of the squeezer or presser, the reverse action is produced on
the respective flexible portions of the vessels.

page_text: The squeezer or presser, whether single or double acting, is mounted in or on
suitable guides to ensure its correct action.
DL: 19th
March 1904
Improved Air or Gas Compressor, applicable also as a Blowing
Apparatus, Pump, and Exhauster.
We, JENKIN LEWIS, Engineer, of 59 Plasturton Avenue, and WALTER
SAMUEL LLEWELLYN, Iron Founder, of 51 Portmanmoor Road, East Moors,
both of Cardiff, in the County of Glamorgan, 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 :--
The invention consists of an improved and simplified construction of apparatus
for compressing air, which is also applicable as a blowing apparatus, pump and
exhauster.
Our invention is illustrated in the accompanying drawings, which represent,
partly on each sheet, a side elevation partly in section of one form of our improved
air or gas compressor, blower, pump or exhauster.
According to our invention we employ a vessel a a¹, the part a of which is
formed of cast or wrought iron or other suitable metal and is provided with the
necessary inlet valves b and outlet valve or valves e proportioned to the capacity
of the apparatus; the other part a' of the vessel is formed of a flexible sheeting of
any suitable material but preferably of india-rubber with a layer or layers of
canvas or other suitable woven material inserted therein, and, in cases where it may
be found necessary to assist the perfect inflation of the flexible part a', stiffeners a³
secured thereto may be employed; these stiffeners are preferably in the form of
rings or hoops as shown, and they may be made of any suitable material.
The vessel a a' may be of a hollow spherical form or it may be elliptical or
egg shaped or of other desired and suitable form.
The movable flexible portion a' has a reciprocating motion imparted to it, either
direct from any suitable motive force or by means of a crank shaft receiving rotary
motion in any convenient way from a prime mover.
In conjunction with the flexible portion of the vessel is arranged a rigid body d
externally shaped to a suitable fit for the flexible part a' and rigid part a of
the vessel, and which acts as a squeezer or presser. The squeezer or presser d
and the flexible portion a¹ of the vessel are connected together at their respective
crowns by any suitable means.
By moving the said squeezer or presser d backward and forward, it draws and
presses the flexible part a' for the charging and expulsion strokes respectively of
the air, gases or fluids, according to the purpose for which the apparatus may be
employed.
When inflated the vessel a a¹ forms a more or less completely spherical, elliptical
or other shaped body, and at [the completion of the expelling stroke, the flexible
portion a' is pressed, by means of the squeezer or presser d hereinbefore referred
to, fully into the rigid portion a of the apparatus.
The apparatus may be constructed either with single or double action, that is
to say, for the double action it would be arranged in duplicate in any convenient
manner, but the following arrangement, which is represented in the drawings, is
preferred.
1. 10:1

page_text: Two vessels a a' constructed as before described are arranged in line at a
suitable distance apart; intermediate of such vessels is a double acting squeezer
or presser d, which when forced to the end of its stroke in the one direction, presses
the flexible portion a' of one vessel fully into the rigid portion a thereof, and
draws the flexible portion a' of the other vessel to its fullest extent out of the rigid
portion a thereof, and in the opposite stroke of the squeezer or presser the reverse
action is produced on the respective flexible portions of the vessels.
In the drawings the improved apparatus is represented as being connected
directly with a prime mover, the cylinder e of which has a piston giving motion to
a crosshead working in guides or ways fand connected to the squeezer or presser d
by a connecting rod g at each side of the machine.
The squeezer or presser d, whether single or double acting, is mounted in or on
suitable guides to ensure its correct action; c² c' are outlet pipes communicating
with the main pipe C.
In cases where it is desirable, on account of the possibility of the india-rubber
becoming overheated during working, the flexible parts or diaphragms a¹ and the
squeezer d may be arranged to work in water by forming a tank between and
connected with the flanges of the two rigid parts or vessels a, in which case the
connecting rods giving motion to the squeezer would be arranged to work through
glands. We have not thought it necessary to give a drawing of this arrangement
as such will be readily understood from the above description.
When the apparatus is to be used as a pump the suction pipe will be suitably
connected with the inlet valve or valves.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. The improved combination and arrangement of apparatus substantially as
herein shown and described and for the purpose stated.
2. The combination of a vessel formed of a rigid part and a flexible part, suitable
inlet and outlet valves in the solid part of such vessel, a rigid squeezer or presser
connected to the crown of the flexible part of the vessel, guides for controlling the
motion of the squeezer or presser, and means for giving motion to the latter,
substantially as herein shown and described and for the purpose stated.
Dated this 13th day of December 1894.
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents.
HARRIS & MILLS,
23, Southampton Buildings, London, W.C., Agents.