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Publication numberUS687389 A
Publication typeGrant
Publication dateNov 26, 1901
Filing dateJun 20, 1901
Priority dateJun 20, 1901
Publication numberUS 687389 A, US 687389A, US-A-687389, US687389 A, US687389A
InventorsOtto Wilhelmi
Original AssigneeOtto Wilhelmi
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Covering for subterranean cables.
US 687389 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

No. 687,389. Patented Nov. 26, mm.



(Application filed June 20, 1901.) (No Model.)

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SPECIFICATION forming part Of LGttGlS Patent No. 687,389, dated November 26, 1901.

Application filed June 20, 1901. Serial No. 65,256. (No model.)

To all whom it may concern.-

Be it known that I, Orro WILHELMI, a citizen of Germany, residing atDusseldorf, Germany, have invented certain new and useful Improvements in Coverings for-Subterranean Cables, of which the following is a specifica- 4 tion.

This invention relates to an improved covering for subterranean cables, which may be employed in any soil, will closely hug the cables, and will protect them against injury by the pickax or shovel. The brick coverings heretofore generally used were liable to become easily broken, particularly when the soil was rammed down. Moreover, the covering being stiff did not closely fit the curves of the cables, so that its application was irregular. Finally, during uncovering or repairs the pickax or shovel was liable to penetrate the joints and injure the cable.

In theaccompanying drawings, Figure 1 is a side view of a cable, showing my improved covering in section with strips or omitted. Fig. 2 is a plan; Fig. 3, a side elevation; Fig. 4, a cross-section showing a single cable, and Fig. 5 a cross-section showing a double cable.

The letter 1) represents a cable over which I place a strip ofasphaltum, tar-paper,or similar material a. Over this covering I place burlap bags h, containing beton c or similar hardening-material, the latter being either wet or dry. The bags are flattened and after bein g laid lengthwise on the strips 0. are tightly pressed in place. The adjoining ends of the bags are inclined so as to overlap, Fig. 1, and close the joints, the seams of the bags preferably covering each other. Tarred paper or similar material may be interposed between the bags, so that they may be readily separated when repairs or other work is to be done.

Instead of using tar-paper a the bags them selves may be composed of tar-paper or may be impregnated in such a manner that they will not adhere to one another or to the cable.

The above covering not only constitutes a superior protection for the cables, but it may be applied more quickly than the brick or other rigid coverings heretofore in use.

What I claim is- 1. A cable provided with a covering composed of bags containing beton, substantially as specified.

2. A cable provided-with a covering com posed of bags containing beton, and having overlapping ends, substantially as specified.

3. A cable provided with a covering composed of tar-paper strips placed upon the cable, and of superposed bags containing beton, substantially as specified. I

In testimony that I claim the foregoing as my invention I have signed my name in pres ence of two subscribing witnesses.




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US4842445 *Jul 28, 1987Jun 27, 1989CoflexipCovering structure intended especially to be placed on a conduit or the like laid on the ocean floor
US5160218 *Nov 5, 1990Nov 3, 1992Nova Corporation Of AlbertaIn-ground securement of pipelines and the like
US5722795 *Apr 17, 1996Mar 3, 1998Submar, Inc.Non-abrasive subsea mat
US5846023 *Sep 29, 1997Dec 8, 1998Submar, Inc.Non-abrasive subsea mat
US6027285 *Dec 5, 1997Feb 22, 2000Submar, Inc.Mat installation
US6068027 *Mar 6, 1997May 30, 2000Seamark Systems LimitedPipeline insulation
US8262320Nov 26, 2009Sep 11, 2012Gunn Donald OBallast-filled pipeline weight
US8360688Aug 27, 2012Jan 29, 2013Keymay Industries Ltd.Ballast-filled pipeline weight
US20130269593 *Apr 13, 2012Oct 17, 2013Leon Upchurch II DeLeeSystem and Method Used to Identify and Protect Utility Lines
Cooperative ClassificationY10S116/14, H02G3/26