Improvements аци Frating TO wwwpo 740 Valves of which are or may be Operated by Electro- magnetic Devices.
Year: 1886

page_text: Improvements
аци
Frating
TO
wwwpo
740
Valves of which are or may be Operated by Electro-
magnetic Devices.
I, ALBERT B. WORTH, of Greenport, Long Island, State of New York in the
United States of America, 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 electric air pump system involving the application
of electricity to the operation of the valves. These improvements relate principally
to the circuit controlling device, the same being operated directly by the piston
rod; to a number of pumps in combination with an intermediate vacuum chamber;
to a vacuum alarm; to the particular disposition of the circuits; and to the com-
binations of details as hereinafter described.
The object of the invention is to provide means for operating two or more air
pumps in series; to operate all valves by the aid of electricity in a superior
manner; to automatically generate an electric current and to provide in general a
complete system for automatically operating vacuum air pumps.
In order to illustrate the practical manner of carrying out the invention, and to
enable others skilled in the art to which the invention appertains to make and use
the same, drawings are hereunto annexed and hereinafter described, in which
similar letters represent corresponding elements and in which each part referred to
is designated by a single character.
Fig. 1 is a general end view of the whole system in which two pumps are shown,
certain parts being shown in section and a side view of one of the details being
represented as separated at the right of the figure and fig. 2 is a general side view
showing in particular the vacuum alarm and the circuit controlling device.
The invention embraces the combination of a frame or support A; a main
shaft B at the top thereof; a driving pulley C and second pulley D belted to a
dynamo E; said pulleys being fixed to said shaft; a crank F at each. end of the
shaft; cylinders G and H respectively at the bottom of said frame and pistons I
working therein; connecting rods K joining said cranks with piston rods of said
piston; a projection L upon one of said piston-rods, a receiver or other vessel M
intended to be exhausted of air; and air chamber N located under the cylinder G
and connecting with the receiver; a valve O between said chamber and cylinder G;

page_text: an electro-magnet P having an operating armature Q geared to said valve by
means of the racks R and pinion S; a second air chamber U having a pipe con-
nection T with the bottom of cylinder G; a valve 01 in said pipe; a third air
chamber V located underneath the cylinder H and having a pipe connection with
said second air chamber; and being in all respects as to its interior and as to its
connection with the cylinder V and magnet X similar to the air chamber N;
a three way cock Y in the pipe T and serving to afford an opening to the atmo-
sphere through the pipe Z which has a valve; an electro-magnet a having an
operating armature connected to the valve; a pipe 6 which connects with the
bottom of the cylinder H and the atmosphere; a pipe c having a hand valve d and
connecting the receiver M directly with the air chamber V; a switch having
operating connection with the piston of the cylinder G through the projection L,
and consisting of the metallic slide e adapted to move first upon the electric
terminals ff and then upon the electric terminals g g, the parts h being of an
insulating substance; a circuit i passing from the dynamo-brush; through the
magnet X and a, branching to the metallic slide e and to the little switch Z and
both branches passing to the opposite brush k; an electric circuit m passing from
the circuit at the point n through the magnet P to the slide e and from the
terminals g to the brush k connecting with the circuit i at the point o; a vacuum
alarm consisting of the barometer p having continual connection with the receiver
through the pipe 9; and electric bell r and battery s; and an electric circuit t
passing through said bell and said battery and having one terminal u at the lower
part of the mercury v and two other terminals w of the same polarity as to each
other and of opposite polarity to the first named terminal located above the
mercury, and a switch a located in said circuit.
When the shaft rotates the pistons I of the cylinders G and H operate, the one
being up while the other is down. When the bell rings, i.e. when the vacuum is
comparatively high and the pressure of the air inside the chambers N and V is
insufficient to operate the valves O and those connecting with the interior of the
cylinders, the switch y is turned so as to include the circuit i. As the projection L
moves upwards and downwards it operates the slide e in such a manner as to pass
a current through the magnet P when in its lower position and through the
magnets X and a when in its upper position, so that the air passes from the
receiver M to the chamber N, thence to the cylinder G, then to the chamber U,
then to the chamber V and finally to the cylinder H and atmosphere. If the
switch is in the position shown in the drawing, i.e, closed as to the branch t¹ then
the signal upon the bell will be sooner than when through the branch t¹ alone,
One of the pumps, for instance G, may be operated alone by opening the three way
cock Y to the atmosphere. The pump H may be operated alone by opening the
cock d, the other pump in each case being disconnected from the shaft B.
the
The switch is for operating the circuit through the magnet X by hand, in case
pump G and therefore the projection L is not in operation.
The invention is not limited to the precise construction herein before described,
as it is obvious that many modifications may be made therein without departing
from the spirit of the invention.
It is evident that any electric generator may be substituted for the battery 8, as
for instance the dynamo E. In the actual construction I prefer to make all air
chambers and pipes as small as possible so as to leave the minimum amount of
space to be exhausted.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. In an electric air pump system; one or more air pumps; electro-magnetic
valves to said air pumps, having an automatic electric operated connection with the
piston rod of one of the pumps and suitable pipe connections between the said

page_text: 2. In an electric air pump system, the combination of two pumps, and an inter-
mediate chamber having air pipe connections with each of said air pumps through
a valve.
3. In an electric air pump system, the combination of two pumps and an inter-
mediate air chamber provided with an automatic electro-magnetic valve passage
communicating with one pump and with a direct air passage communicating with
the other pump.
4. In an electric air pump system, the combination of air pumps, and electro-
magnetic valve for each pump; an intermediate chamber communicating through
an electro-magnetic valve with each pump; and an automatic operating electric
connection between all of said valves and any one of the pistons of said pumps,
substantially as and for the purpose set forth.
5. In an electric air pump system, the combination of air pumps having an air
chamber under each; an external air chamber communicating with the cylinder of
one pump and with the air chamber located under the cylinder of the other pump,
and suitable automatic operating electric valves in circuit with a circuit controlling
device having an operating connection with one of the movable parts of said pump.
6. In an electric air pump system, the combination of air pumps having an air
chamber under each; an external air chamber communicating with the cylinder of
one pump and with the air chamber located under the cylinder of the other pump,
and suitable valves between the various chambers and cylinders.
7. In an electric air pump system, the combination of a main shaft; a dynamo
having a belt connection therewith; two pistons having crank connections with
said shaft; a switch having operating connections with one of said pistons and in
circuit with electro-magnetic valves located within said pump system and with
said dynamo; an electric alarm dependent for its action upon the density of the air
within the space being exhausted; and suitable air passages and valves between
the pumps of said system, substantially as set forth.
Dated this girth (6th) dor of Santamber & D 1806