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Патент USA US2594654

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April 29, 1952
2,594,649
J. v. HobsHlRE
DUAL MANOMETER
Filed March 1s. 194e
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INVENTOR.
James“ V Hoda/zz're‘
ATTE! R N EYS
Patented Apr. 29, 1952
2,594,649
i
UNITED STATES
ATENT OFFICE
2,594,649
DUAL MANOMETER
.llames V. Hodshire, Oklahoma City, Okla.
Application March 16, 1948, Serial No. 15,?¿33
Z Claims.
(Cl. ’i3-_461) ,
1
2
'This invention relates to a dual manometer.
The manometer parts are preferably made of
It is an object of the present invention to pro
p_astic, but where temperatures are high, the
vide two manometers on a single support and a
same may be constructed of aluminum and with
common valve stem extending between the
the tubes formed of glass. Mercury may be car
branches of the manometers for permitting the 5 ried in the tube i6 while in the tube Il there can
same to being closed as when‘the manometer is
be carried the water.
to be transported, the valve stem being in a head
While various changes may be made in the de
from which the branches oi the manometer tubes
tail construction, it shall be understood that such
extend and to which test connections can be
changes shall be within the spirit and scope oi
ñtted.
10 the present invention as defined by the appended
Other objects of the present invention are to
claims.
I claim:
provide a dual manometer which is of simple construction, inexpensive to manufacture, conven~
l. In a dual manometer, a support provided
ient to use and connect with portions of appara
with an enlargement on its upper end, inner and
tus to be measured for pressure or vacuum, has
minimum parts and eiilcient in operation.
For other objects and for a better understand
ing- of the invention, reference may be had to the
following detailed description taken in connection
20
with the accompanying drawing, in which
Fig. l is a iront elevational view of the manom
eter embodying the features of the present in
vention.
outer U~shaped manometer tubes having their
upper ends extending into said enlargement, there
being spaced parallel vertical passages extending
through said enlargement and communicating
with the ends of the manometer tubes, there be
ing a transverse opening traversing the vertically
extending passages, a tapered valve stem rotat
ably positioned in said transverse opening and
having openings therein adapted to be aligned
Fig. 2 is a side elevational view.
with the vertical passages, and a measuring scale
Fig. 3 is an enlarged fragmentary elevational 25 portion extending longitudinally of the support
view with portions broken away and shown in
and positioned between the vertically extending
section.
portion of the inner tube.
Figs. 4 and 5 are respectively transverse sec
2. In a dual manometer, a support provided
tional views taken on lines ¿i-ái and 5--5 of Fig. 3.
with an enlargement on its upper end, a pair of
Referring now to the figures, i9 represents a 30 U-shaped manometer tubes having their upper
support formed of plastic or other material on
ends extending into said enlargement, there be
the upper end of which there is disposed an en~
largement II into which extends a valve stem I2
of tapered formation.
ing spaced parallel vertical passages extending
through said enlargement and communicating
Extending vertically
with the ends of the manometer tubes, there be
through the enlargement H are a plurality of 35 ing a transverse openingI traversing the vertically
Vertical passages I3 having large end sections I4
extending passages, a tapered valve stem rotat
and I5. The end sections I4 of the passages re
ably positioned in said transverse opening and
ceive the upper ends of U-shaped tubes I6 and ` having openings therein adapted to be aligned
I7., The tube I 'I lies within the U-shaped tube 'I6
~ with the vertical passages, and a measuring scale
and between its vertical portions there extends a 40 portion extending longitudinally of th-e support
measuring scale I S on which pressure readings
and positioned between the vertically extending
can be made. Test connections can be made with
portion of the innermost tube, one of said tubes
the threaded sections I5. The valve stem I2 is
being nested within the other of said tubes, and
extended through a transverse opening I9 which
a liange projecting from said support for pro
traverses the vertical passages I3. The valve stem 45 tecting said tubes.
has holes 2| adapted to be aligned with the pas
JAMES V. HODSHIRE.
sages I3 or to be turned out of alignment there
with as the valve stem is turned to a closed posi
REFERENCES CITED
tion. Within the stem I2 and extending diamet
The
following
references are of record in the
rically thereacross is a hole 24 into which can be 50
file of this patent:
l
extended a turning handle. The tubes I6 and Il
are fitted tightly within the large sections I4 of
UNITED STATES PATENTS
the passages I3 so as to be suspended therefrom
Number
Name
Date
free of outer means of support upon the support
1,640,926
Beachler _________ __ Aug. 30, 1927
ing board I9. The supporting board I0 has a 5 Ul 1,812,152
Jensen ___________ __ June 30, 1931
flange 26 extending around it to give protection
to the tubes I 5 and I'I.
1,909,296
2,323,556
Meriam __________ __ May 16, 1933
Mattocks _________ __ July 6, 1943
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