Measuring and testing – Liquid level or depth gauge – Sight glass
Patent
1976-07-27
1978-07-04
Swisher, S. Clement
Measuring and testing
Liquid level or depth gauge
Sight glass
73324, G01F 2302
Patent
active
040981193
ABSTRACT:
A sight-glass adapter which may be provided in the form of a separate kit for use with existing sight-glass arrangements as currently in use with tanks and other vessels. The adapter unit of this kit provides all of the necessary elements for connection between the existing valves and the existing sight glass in order to properly hold the sight glass in a manner which will permit easy and quick access to the interior thereof for the purpose of cleaning same. The adapter includes a main body element having a threaded projection at one end thereof for receiving a sight-glass retaining nut thereon together with appropriate rubber seal and metal washer structure. The other end of the main body member has a removable screw plug for permitting quick access to the interior of the member as well as the interior of the sight glass itself. An aperture tapped on one side of the main body element receives a secondary member having a projecting screw threaded end receivable in the main body member tap with the other end of the member having a retaining collar and appropriate nut thereon for attachment to the existing valve for the sight glass. A recessed tip end with O-ring seal is also provided for the other end of this secondary member in order to form a fluid tight seal in engagement with the valve structure. A wrench receiving recess is also provided on the body of the secondary member.
REFERENCES:
patent: 640442 (1900-01-01), Clarke
patent: 1178836 (1916-04-01), Best
patent: 1307225 (1919-06-01), West
patent: 1701914 (1929-02-01), Ernst
patent: 3056616 (1962-10-01), Jaros
Corr Denis E.
Jacobson Harvey B.
O#Brien Clarence A.
Swisher S. Clement
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