Improvement in Air-Pressure Fluid-Vents. Page: 2 of 2
[1], 1 p. : ill. ; 23 cm.View a full description of this patent.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
UNITED STATES PATENT OFFICE.
HARDY B. PARK, OF DALLAS, TEXAS.
IMPROVEMENT IN AIR-PRESSURE FLUID-VENTS.
Specification forming pawt of Letters Patent No. 198,672, dated December 25, 1877; application fled
July 7, 1877.To all whom it may concern:
Be it known that I, HARDY B. PARK, of
Dallas, in the county of Dallas and State of
Texas, have invented certain new and useful
Improvements in Air - Pressure Automatic
Fluid-Vents, for use in the discharge of all
liquids; and I do hereby declare that the fol-
lowing is a fill, clear, and exact description
thereof, which will enable others skilled in
the art to which it appertains to make and
use the same reference being had to the ac-
companying drawings, and to the letters of
reference marked thereon, which form a part
of this specification.
In the use of the ordinary spigot in draw-
ing off any liquid substance, it becomes nec-
essary to remove the spigot, or the contents
of a cask or vessel cannot be discharged.
Devices to facilitate the flow of liquids from
closed vessels have been heretofore applied
with partial success. I know of no device
for the purpose that is not dependent on the
hand and eye for its usefulness.
Ily invention presents an improved device
for the obviation of certain deficiencies in
such apparatus.
In the construction of my automatic vent
I form the cylinder in which the self- acting
parts of the arrangement are placed with an
expanded flange or rim. The bore-hole pass-
ing through it is true, and in the under face
of the flange I bore out a shallow seat, which
has shoulders nearly one- eighth of an inch
wider than the center-bored hole. In the cen-
ter hole a stem is fitted to work without re-
straint by tightness of fit, which has also
three slots (longitudinal) as air-passages. One
end of the stem is provided with a head,
which fits easily in the seat formed in the lower
cylinder end, I cut a gasket of rubber or
other suitable material, and slip it on the
stem and down on the head. There is then
provided a good air-tight joint, when the stem
is entered into the hole in the center of the
cylinder, and the stem-head, with its rubber
gasket, placed in the shallow seat in the lower
end of the cylinder.
When the rubber gasket is in its place on
the stem, I pass the stem into the hole in the
center of the cylinder, and on the end of the
stem which protrudes through the cylinder I
affix a helical spring, to hold the spring downto the upper shoulder of the cylinder. A burr
is riveted on the point of the stem, to retain
the compression of the spring.
Referring to the accompanying drawings,
Figure 1 is a sectional view of bung- stave
of a barrel, showing the vent inserted in both
stave and bung. Fig. 2 is a view of valve-
head. Fig. 3 is a perspective view of the
vent.
A is the bung; B, the stave, showing two
views of vents in such positions as suit, or
the vent may be placed elsewhere; 0, valve-
head; c', Fig. 1, gasket of packing material;
D, cylinder; d, helical spring of valve-stem;
d', slots for the passage of air down the stem
f of the valve; e, button on end of valve-
stem; f, stem-button rivet.
The operation of my improved vent is as
follows: Into a suitable-sized hole in any cask
or closed vessel containing a fluid press the
cylinder D, either in the bung, staves; or head,
either from the under side of the bung or
from the upper side, only observing that the
cylinder makes a tight fit in the wood, and
that the valve end is downward. The spring
at all times holds the valve on the stem in the
seat without the admission of any air. Upon
the usual discharge faucet or spigot being
opened to draw out any of the contained
fluid within the vessel, the removal of any
part will cause a partial vacuum, which very
soon will overcome the resistance of the spring
on the valve - stem. The air will, in conse-
quence, pass inward and fill the vacancy
caused by the removal of the contained fluid.
Whenever the suction is less than the resist-
ance to the opening of the valve it closes, no
air not required goes into the vessel, nor can
any of the contained gases or volatile mat-
ters escape.
What I claim as my invention is-
The cylinder D, combined with the valve C
on the closely - fitting slotted stem f, the re-
placing-spring d, and packing c', as and for
the purposes herein described.
In testimony that I claim the foregoing as
my own invention I affix my signature in pres-
ence of two witnesses.
HARDY B. PARK.
Witnesses :
SEPIRENESS M. HICIKEY,
IM. L. GRAY.
Search Inside
This patent can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Patent.
Park, Hardy B. Improvement in Air-Pressure Fluid-Vents., patent, December 25, 1877; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth166738/m1/2/: accessed June 20, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.