Improved Air Pump.
Year: 1890

page_text: Date of Application, 7th Jan., 1890-Accepted, 8th Feb., 1890
COMPLETE SPECIFICATION.
Improved Air Pump.
We, AUGUSTO BROOK Architect and HILARION A. ROMERO Gentleman, both of
Buenos Ayres, Argentine Republic, 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 an air pump which is used to exhaust or to compress air,
it is very simple in construction and is moreover very light in weight. This air pump
is shown in the accompanying drawings, in which Figure 1 is a side view thereof,
and Figure 2 another side view at a right angle to the former.
Upon a suitably supported horizontal shaft a is mounted at one end thereof a vane
or fly b, while the other end of the same shaft carries a crank d to which is connected
a rod e. The rod e is jointed with the upper end of another rod f, the joint being
guided by the links g, g¹, g¹. The links 9, 9', are attached to the frame, as shown.
The lower end of the rod f is fixed to an india rubber cap or hood h having a some-
what semi spherical shape and secured at its lower part to a tapered closed vessel i of
sheet steel, or other suitable metal.
At the lower end of this vessel is fixed laterally a casting & furnished with a hole k
communicating with the inside of the vessel. The front or outside surface of this
casting k is ground smooth, or faced up, and against the same, moves an oscillating
plate m which is pivotted to turn upon a pin or pivot m¹. The plate m is terminated
by a bar m³, which is shaped to that of the vessel i and the semi-spherical cap or
hood h, when expanded. The bar m² carries at its upper end, a slotted bar or
guide m³. Within this guide, slides a block n which is connected by means of an
extension o of the crank d.
The sliding plate m is provided with two holes or parts and short tubes p, p¹, which
communicate alternately with the opening k¹ in the casting k and vessel i, so that
when the plate m is set oscillating, to and fro, from the rotary motion of the cranks d
and o, by the action of the wind against the vane or fly b, the hood his alternately
collapsed and expanded. When the hood is collapsing, the air contained in the
vessel i is compressed and expelled through the port and pipe p¹ in order to be
conveyed to a reservoir or the like, while when the same hood h is expanding, air is
again drawn in through the pipe p and the hole or port k¹ into the vessel i. The
pipe pl may be connected with a storage reservoir for the compressed air by means of
a suitable india rubber pipe, or hose. The hood h is made of fairly strong india
rubber, so that when collapsed, as shown in Figure 2, it has a tendency to return to
its normal position by reason of the elasticity of the india rubber.
The air pump may be simplified by substituting for the piece k with the sliding
plate ma chest, or shell with an exhaust and forcing valve or tap, as shown in
Figure 3. In the valve chest r, the expansion of the hood causes air to be drawn
in at and its collapse causes air to be expelled at r³.
Having now particularly described and ascertained the
tion and in what manner the same is to be performed we
claim is :→
nature of this inven-
declare that what we
1. An air pump in which the revolution or rotation of a vane or fly 6 causes a
hood h made of india rubber and forming the upper part of a vessel i to be
alternately collapsed and expanded, whereby air is expelled from the receiver i, or
exhausted therein as decoribed

page_text: 2. In the air pump claimed in claim 1, the operating gear for controlling the
incoming and outgoing of air, said gear consisting of a turning or sliding plate m
and rod m² set in motion by the shaft or axis of the vane or fly with the aid of a
crank d, and of a guide m³, as described.
Dated this 7th dove of 1800.
H. GARDNER,
166, Fleet Street, London,
Agent for the said Auguste Brock and Hilarion A. Romero.