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Publication numberUS165550 A
Publication typeGrant
Publication dateJul 13, 1875
Publication numberUS 165550 A, US 165550A, US-A-165550, US165550 A, US165550A
InventorsEgbert E. Dietz
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in devices for thawing frozen water-pipes
US 165550 A
Abstract  available in
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Description  (OCR text may contain errors)


Device for Thawing Frozen Water-Pipes.

Patented Jul-1, 13, 1875.




Specification forming part of Letters Patent No. 165,550, dated July 13, 1875; application tiled April 2', 1875.

To all whom it may concern:

Be it known that I, ROBERT E. DIETZ, of the city. county, and State of New York, have invented a Device for Thawing Frozen ater- Iipes, of which the following is a specification:

The object of my invention is to readily thaw the ice which in severe weather frequently interrupts the flow of water through the pipes extending from the mains in the street to the cellars of d Welling-houses and otherbuildings and this object I attain in the manner which I will now proceed to describe", reference being had to the accompanying drawing, in which Figure 1 represents a vertical section of a water-main, part of the street, the wall of the cellar, the branch pipe, and device through the medium of which hot water or heated air or gases may be applied from within the building to the thawing of ice in the branch pipe. Fig. 2 is a plan View of Fig. 1.

A represents the main, which, as usual, is embedded at a depth of several feet below the surface of the street, and from the ordinary stop-valve a 011 this main extends the branch pipe B through the wall D and into the cellar of a dwelling-house or other building. Durin 3 very severe frosts the water in these branch pipes is frequently frozen while the flow in the main is unobstructed. As a means of thawing the ice in the branch pipe B, I place on each side of the said pipe, and in contact with the same, two tubes, E E, communicating with each other at or near the main, and extending through the wall D into the build- 111g.

, \Vhencver the water in the branch pipe B is frozen, hot water or heated air or gases may be forced from within the building into one tube, E, and permitted to escape from the other tube, and this circulation of hot water or heated air through the said tube E will soon in1- part such heat to the adjoining branch pipe B as to thaw the ice therein.

I am aware that a surrounding chamber for receiving hot air or steam has been heretofore combined with a water-pipe, and that such water-pipes have been inclosed by a steampipe coiled round them but such arrange ments cannot be applied to service-pipes which have been already laid in the ground, nor can they be used in rocky localities, where the water-pipes are generally laid in the crevices between the rocks, and consequently follow an irregular course. The tubes E, however, can be laid close to the sides of the water-pipe B throughout its entire length, and can be readily adapted to any irregularities in the course of the said'pipe.

I claim as my invention The combination of the branch pipe B and a tube, E, adjoining said pipe and extending parallel, or nearly parallel, thereto from a point at or near the main to and through the wall D of a building, as specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3832525 *Mar 26, 1973Aug 27, 1974Raymond Lee Organization IncAutomatic heating device to prevent freezing of water supply lines
US6158231 *Sep 14, 1999Dec 12, 2000Singer; Jan L.Temperature regulating system employing thermostatic switching devices to assure safe operation of the system in both hazardous and non-hazardous applications
US6899124Jul 22, 2003May 31, 2005Gerald E. WardAntifreezing guard
US7182126 *Oct 1, 2004Feb 27, 2007Lorne HeiseFluid heater
US20050092471 *Oct 1, 2004May 5, 2005Lorne HeiseFluid heater
Cooperative ClassificationF16L53/002