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Publication numberUS1675210 A
Publication typeGrant
Publication dateJun 26, 1928
Filing dateOct 29, 1926
Priority dateOct 29, 1926
Publication numberUS 1675210 A, US 1675210A, US-A-1675210, US1675210 A, US1675210A
InventorsCampbell Leo F, George Rothweiler
Original AssigneeCampbell Leo F, George Rothweiler
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Thermometer well
US 1675210 A
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Description  (OCR text may contain errors)

L. F. CAMPBELL ET AL THERMOMETER WELL Filed 001.29, 1926 Z601 Wain 0582i amsfier zs w ATTORNEY Ball Patented June 26, 1928.

nnrraasraras ane rarest LEO .r. CAMPBELL AND GEORGE ROTHWEILER, or EAST Arron, rumors.


Application filed. October 29, 1926. Serial No. 145,649,.

Our present invention has reference to a thermo-couple adapted to be connected to a pyrometer for indicating the temperature of oil, vapors, steam, water and like fluids, the object being the provision ofsimple means whereby the Well may be arranged in or removed from the line without the liability of inflicting injury thereto and also without the liability of the opening through which the well passes being clogged when the thermo-couple is removed and a turbine is employed for cleaning out the line.

To the attainment of the above broadly stated objects and others which will present themselves as the nature of the invention is better understood, the improvement further resides in the novel features of construction, combination and operative association of parts, a satisfactoryembodiment of Which is disclosed by the accompanying drawings.

In the drawings:

Figure 1 is a side elevation of the improvement.

Figure 2 is a central longitudinal section therethrough.

Figure 3 is a sectional view on the line 3-3 of Figure 2.

The well for a thermo-couple as ordinarily constructed is removed when the plant is shut down so as to' permit the line through which the well passes being cleaned. Because of the intense heat inthe line through which the oil flows the pipe or line becomes scaled with coke and a turbine is used to break this coke loose in the cleaning of the line. Of course, the thermo-couple must be removed when the line. is to be cleaned. In taking out these wells the threads on the well and in the line, due to the scale of coke,

or other formations frequently have their threads destroyed, and in order toput the well back in service it becomes necessary to retap the threads in the line in order to remove the scale of .coke therefrom. This necessarily enlarges the threaded hole. and renders the well unsafe, as there is always a pressure from ten to seven hundred and fty pounds on the lines. Therefore, it is frequently necessary to plug up the thread ed hole and again tap the same the right size. After the hole has been retapped several times it becomes necessary to throw away the well on account of bad threads, this being due to the well being made in one piece. If these holes are not retapped after every run the thermo-couple to remove the thermo-couple before the well can be removed. These couples are very delicate and the removal thereof from the wells leaves the same unprotected, during the entire period the plant is shut down and it is not infrequent that the couples become broken or water soaked which results in the short circuiting of the apparatus. Also there are only two kinds of metal that can be used with success that is aluminum bronze and brass, as other metals, when screwed into the steel threads in the line and subsion and disintegration of the threads. Also dirt and other matters are liable to fall jected to intense heat will cause the corn into the well after the same has been replaced so that the couple when reinserted is not afforded a snug fit which fre uently results in the breakage of the porce ain on the couple and the breakage of the expensive wires of the couple, while the wrench employed in removing and replacing the well frequently flattens the mouth of the Well tor an extent that will not permit of the thermocouple being inserted and the well is thus rendered useless as any attempt to enlarge the mouth of the well is liable to make too great an air space so that the couple will not give correct readings. With our improvement viate the above defects.

As disclosed by the drawings the well 1 has a shoulder 2. This shoulder is received in the bore of a bushing 3 that is screwed in the line. The annular shoulder 2 rests on a gasket 4 in the lower wall provided by the boreof the bushing 3. Screwed in the bushing 3 there is the threaded shank of a jamb nut 5. The bushing it will be noted We effectively obmay remain in the line when the jamb nut is unscrewed so that the well 1 may be withdrawn.

The outer end of the well has screwed thereon a coupling 6 which contacts with the jamb nut. Threaded through an opening in the coupling and contacting the threaded end i of the well there is a'lock bolt 7. Screwed use thereof eliminates the retapping and rethreading of the pipe line as no coke can enter into the threads; The gasket 4, when compressed by the shoulder 2 of the well, when the latter is influenced by the jamb nut 5, eflectively seals the well and prevents oil and coke from entering 'the bushing so that the threads in the bushing and jamb nut are at all times retained clean which permits of the ready removal of the jamb nut from the bushing. By the use of our improvement the couple is fully protected at all times as the couple does not have to be removed from the wellafter the well has been removed from the line and therefore, there is no danger of the couple becoming destroyed by workmen or from other causes and thus with our improvement the couple will last as long asthe well itself as the couple need never be disturbed at any time. With our device it is easy to remove the well, as when the jamb nut5 is unscrewed it breaks the well loose from the gasket and pulls scale of coke from the end of the well when the latteris;;d'ra wn through the bush reinove the couple a When. a is e ire v ll', the pipe member 8 is unscrewed from the collilpling 6, and the v couple drawn out of the we Instead of threadedly connecting the parts 'oithe improvement as, above described a ground joint maybe provided therebetween.

' bushing adapted to be screwed in the line The bushing is of bronze orhaving an opening therein receiving-the well theft-bushing compressed b contacting en- Having described I the invention, we claim t 1. A well for thermo-couples, comprising a member having an annular shoulder, a

in which the well enters and through which the well passes, a gasket on the inner wall of the bushing against which the shoulder of the well rests and a-jamb nut having an opening through which the outer end of the well passes, said jambnut being screwed in the bushing to contact the shoulder of the well to compress the same against the gasket.

2. A well for thermo-couples, comprising a member having an annular shoulder, a bushing adapted to be screwed in the line in which the well enters and through which the well passes, a gasket on the inner wall of the bushing against which the shoulder of the well rests, a jamb nut havin an opening through which the outer end 0 the well passes, said jamb nut being screwed on the shoulder of the bushing to contact the shoulder of the well to compress the same against the gasket, a coupler screwed on'the outer end of the well and normally contacting the jamb nut, a tubular member screwed in the coupler, and a head for the thermo-couple removably secured to the outer end of the tubular member.

3. A well for thermo-couples, comprising a member having an annular shoulder, a bushing adapted to be screwed in the line in which the well enters, a jamb member therethrough and being received in the bushing andcontacting with the shoulder of the Welland a gasket between the shoulder and ga'gement of the shoulder t ereagainst. In testimony -whereof, we aflix our signatures;


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2480557 *Aug 2, 1946Aug 30, 1949Cummins Harry SDetachable thermocouple housing
US2644851 *May 4, 1950Jul 7, 1953Bendix Aviat CorpThermocouple
US2649489 *Apr 26, 1950Aug 18, 1953Armstrong Cork CoThermocouple
US2660061 *Mar 5, 1949Nov 24, 1953Dominion Eng Works LtdImmersion type thermocouple temperature measuring device
US4826540 *Jan 12, 1987May 2, 1989Sam MeleAdjustable depth thermocouple system
US4948264 *Jul 7, 1986Aug 14, 1990Hook Jr Richard BApparatus for indirectly determining the temperature of a fluid
US4958938 *Jun 5, 1989Sep 25, 1990Rosemount Inc.Temperature transmitter with integral secondary seal
US4963194 *May 1, 1989Oct 16, 1990Sam MeleAdjustable depth thermocouple system and fitting
US5172594 *Oct 29, 1991Dec 22, 1992The Boeing CompanyExternally removable liquid level sensor system
US5667305 *Jun 9, 1995Sep 16, 1997Ford Motor CompanyLow force high pressure port
US7069781Apr 12, 2004Jul 4, 2006Nelson Craig TStillwell apparatus
WO1990015312A1 *May 4, 1990Dec 13, 1990Rosemount IncTemperature transmitter with integral secondary seal
U.S. Classification136/242, 136/230, 374/179, 374/E01.11, 374/208
International ClassificationG01K1/08, F16L5/00
Cooperative ClassificationF16L5/00, G01K1/08
European ClassificationG01K1/08, F16L5/00