US559767A - Mercury test-gage - Google Patents

Mercury test-gage Download PDF

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US559767A
US559767A US559767DA US559767A US 559767 A US559767 A US 559767A US 559767D A US559767D A US 559767DA US 559767 A US559767 A US 559767A
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mercury
gage
cup
test
air
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/18—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements using liquid as the pressure-sensitive medium, e.g. liquid-column gauges

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  • ()ur invention relates to plumbers mercury test-gages, which, as heretofore constructed, have had the following objections: First, the mercur Y is placed in an air-chamber at the spilled, to get into the lower parts of the gage, which are constructed of brass, thereby destroying them; second, after using the gage the 1118101113721213 to be poured out of the airchamber into a bottle or receptacle, which may break or be mislaid.
  • the object of our invention is to overcome these objections and also to protect the gagetube when the mercury-cup has been removed.
  • ⁇ Ve attain this object by means of the mechanism illustrated in the following drawings, in which- Figure 1 is an end elevation of the gage with a portion in section.
  • Fig. 2 is a plan with the three-way cock in sect-ion.
  • Fig. 8 is similar view with the cock in a different position and some of the parts omitted.
  • Fig. at is an elevation of the mercury-cup, showing it sealed up after being removed.
  • Fig. 5 is the guard for the glass tube with the mercurycup removed.
  • Fig. 6 is another view of the gage, partly in section.
  • a is a mercury-cup screwed into the body h of the gage, the joint being made air-tight by the washer a or in any ordinary manner, and the lower portion of the mercury-cup is enlarged to form the chamber a to hold the mercury cl.
  • the inlet or mouth of the mercury-cup is larger in diameter than the glass tube a to allow the air to pass downward into the chamber a to act upon the mercury (Z to force it upward into the tube 0 to indicate the 559,367, dated May 5, 1896.
  • the body Z) is enlarged to allow the air which is admitted through the passage-way b to circulate around the tube 0.
  • the gland g is screwed in to the body 7) against the Washer g making an air-tight joint around the glass tube 0.
  • the guard g is secured to the gland g and is provided with the opening to exposeto view the position of the inercury as it ascends the tube (1, indicating the pressure.
  • 71. is a two-way cock for controlling the air as it comes from the pump through hose K, which is connected to the body I) by means of the coupling 5.
  • m is a short section of the pipe to be tested.
  • the two-way cook it is located between the inlet ⁇ 1 outlet b and the mercury-cup a at the intersection of the passage-ways b b 5 as shown in Fig. 2. .Vhen the cock 72. is turned in the position shown in Fig. 2, the air passes from the inlet Z1 through the passageways If h into the pipe m. hen turned to the position shown in Fig. 3, the air is shut off from the inlet and is allowed to pass from the pipe at through passage-ways I) Z) into the inercury-cup a to force the mercury up the glass tube 0 to indicate the pressure.
  • the mercuryeup When the gage is not in use, the mercuryeup is removed and sealed by the cap a as shown in Fig. 4, and can be carried in the tool-box, avoiding any loss from the pouring of the mercury into a bottle or by its breakage.
  • the piece of pipe or tube 13, Fig. 5, is then screwed into the body I) of the gage to take the place of the mercury-cup just removed and to protect the glass tube a, which is exposed by the removal of the mercury-cup, thereby allowing the gage to be carried in a tool-box. It is obvious that the mercury being in the mercury-cup below the other parts of the gage, it is not possible for any of it to pass out of the cup to injure the parts.
  • ⁇ Vhat we claim as our invention is- 1.
  • the mercury-cup (4 having a screw-threaded upper part, in combination with a tubular body screw-threaded for engagement therewith, means for directthe mercury-cup for the purpose of protecting the protruding part of the gagertube when the said cup has been removed, substantially as set forth.

Description

{No Model) W. & J. BOEKEL. MERCURY TEST GAGE.
Patented May 5, 1896.
WITNESSES top of the gage, allowing the mercury, when UNITED STATES PATENT MERCURY TEST-GAG E.
SPECIFICATION forming part of Letters Patent No.
Application filed April 29, 1893.
To all whom it may concern:
Be itknown that we, \VILLIAM BOEKEL and JULIUS BOEKEL, citizens of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvementsin Plumbers Mercury Test-Gages; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being bad to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.
()ur invention relates to plumbers mercury test-gages, which, as heretofore constructed, have had the following objections: First, the mercur Y is placed in an air-chamber at the spilled, to get into the lower parts of the gage, which are constructed of brass, thereby destroying them; second, after using the gage the 1118101113721213 to be poured out of the airchamber into a bottle or receptacle, which may break or be mislaid.
The object of our invention is to overcome these objections and also to protect the gagetube when the mercury-cup has been removed. \Ve attain this object by means of the mechanism illustrated in the following drawings, in which- Figure 1 is an end elevation of the gage with a portion in section. Fig. 2 is a plan with the three-way cock in sect-ion. Fig. 8 is similar view with the cock in a different position and some of the parts omitted. Fig. at is an elevation of the mercury-cup, showing it sealed up after being removed. Fig. 5 is the guard for the glass tube with the mercurycup removed. Fig. 6 is another view of the gage, partly in section.
a is a mercury-cup screwed into the body h of the gage, the joint being made air-tight by the washer a or in any ordinary manner, and the lower portion of the mercury-cup is enlarged to form the chamber a to hold the mercury cl. The inlet or mouth of the mercury-cup is larger in diameter than the glass tube a to allow the air to pass downward into the chamber a to act upon the mercury (Z to force it upward into the tube 0 to indicate the 559,367, dated May 5, 1896.
Serial No. 472,426 (No model.)
pressure. The body Z) is enlarged to allow the air which is admitted through the passage-way b to circulate around the tube 0. The gland g is screwed in to the body 7) against the Washer g making an air-tight joint around the glass tube 0. The guard g is secured to the gland g and is provided with the opening to exposeto view the position of the inercury as it ascends the tube (1, indicating the pressure.
71. is a two-way cock for controlling the air as it comes from the pump through hose K, which is connected to the body I) by means of the coupling 5.
m is a short section of the pipe to be tested.
The two-way cook it is located between the inlet {1 outlet b and the mercury-cup a at the intersection of the passage-ways b b 5 as shown in Fig. 2. .Vhen the cock 72. is turned in the position shown in Fig. 2, the air passes from the inlet Z1 through the passageways If h into the pipe m. hen turned to the position shown in Fig. 3, the air is shut off from the inlet and is allowed to pass from the pipe at through passage-ways I) Z) into the inercury-cup a to force the mercury up the glass tube 0 to indicate the pressure.
ois the ether-cup to introduce other into the pipe being tested.
When the gage is not in use, the mercuryeup is removed and sealed by the cap a as shown in Fig. 4, and can be carried in the tool-box, avoiding any loss from the pouring of the mercury into a bottle or by its breakage. The piece of pipe or tube 13, Fig. 5, is then screwed into the body I) of the gage to take the place of the mercury-cup just removed and to protect the glass tube a, which is exposed by the removal of the mercury-cup, thereby allowing the gage to be carried in a tool-box. It is obvious that the mercury being in the mercury-cup below the other parts of the gage, it is not possible for any of it to pass out of the cup to injure the parts.
The construction of our gage may be greatly varied and not depart from the spirit of our invention.
\Vhat we claim as our invention is- 1. In a mercury test-gage, the mercury-cup (4 having a screw-threaded upper part, in combination with a tubular body screw-threaded for engagement therewith, means for directthe mercury-cup for the purpose of protecting the protruding part of the gagertube when the said cup has been removed, substantially as set forth.
In testimony whereof We affix on r signatures in presence of two witnesses.
WILLIAM BOEKEL. JULIUS BOEKEL. Witnesses:
GEORGE W. SELTZER, ALLEN H. GANGEWER.
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