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Publication numberUS594998 A
Publication typeGrant
Publication dateDec 7, 1897
Filing dateOct 1, 1897
Publication numberUS 594998 A, US 594998A, US-A-594998, US594998 A, US594998A
InventorsRobert W. Lyle
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Conduit for electric wires
US 594998 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

(No Model.) l



No. 594,998. Patented Deo. `7, 1897.




SPECIFICATION forming part of Letters Patent No. 594,998, dated December 7, 189'?.

Application led October l, 1897. Serial No. 653,675. (No model.)

To all whom it may concern,.-

Be it known that I, ROBERT W. LYLE, a citizen of the United States, residing at Perth Amboy, in the county of Middlesex and State of New Jersey, have invented a certain new, useful, and valuable Improvement in Oonduits for Electric Vires, of which the following is a full, clear, and exact description.

My present invention relates to improvements in conduits for electric wires and the object thereof is to provide the combination and arrangement of parts hereinafter fully described, whereby an economical and e'liicient construction is obtained.

In the accompanying drawings, forming a part of this speciiication, Figure l is a perspective view of two lengths of my improved conduit with a splice-capping over a brokenaway section of the forward length. Fig. 2 is an enlarged detail view of my joining-iron. Fig. 3 is substantially a transverse section taken through line X X of Fig. 1, and Fig. 4 is substantially a longitudinal sectional view taken through line Z Z of Fig. 3.

I am acquainted with the several forms of conduits for electric wires which have been marketed up to this time and also with the numerous patents issued therefor, and it is rather the object of this invention to render practicable prior developments than to make or pretend to have made any radical changes in the present general forms of construction.

One of the serious objections which has heretofore existed in the class of conduits named is that none of them provide safe and convenient means for breaking away the conduit at desired points for the purpose of inaking branch connections with one or more of the main wires within the conduit. As this necessity frequently arisesmsuch, for instance, as wherever a new residence, store, or subscriber is to be tapped in one of the main wires-it has usually resulted in breaking away unnecessarily large sections of the conduit in attempting to cut through the same, and occasionally thus ruining the entire length of conduit.

My invention entirely obviates the aforesaid objection or defect byindenting or scoring each length of conduit longitudinally on the top and sides, both interiorly and exteriorly, such score-lines being indicated upon the several views of the drawings by the numeral 1, and I also score each length of conduit at two equidistant points transversely or circumferentially,as indicated upon the drawings by the numeral 2. As thus scored it is now made comparatively easy to open up any of the compartments of the conduit, as the material readily breaks under the attack of a chisel and hammer at any of the points weakened by the score-lines and without danger of the cracks or breaks extending farther than is desired.

In entering any particular length of conduit I prefer to break away any of the centrally-located sections between the circumferential score-lines 2.

Having broken away a section of the conduit, as above described, and made the connections or repairs required, it next becomes necessary to mend the break made in the conduit, and to accomplish this I employ a splicing-hood 3 of a length sufficient to extend slightly beyond the edges 1i, bounding the broken-away portion, and its downwardlyextending sides 5, terminating in flanges (5 of the form shown in Fig. l, or flange 7, (shown in Fig. 3,) said iianges setting over the ribs 8 of the conduit and when properly cemented forming a waterproof joint therewith. All other outer edges of the hood also are to be carefully cemented to the conduit, attention being invited to the convenience with which the cementing can be done.

The hood 3 shown in Fig. at differs from the others only in that it is provided with the joining-anges 9. The hoods 3 may also have circular or rectangular forms 10 scored therein, which upon being tapped with a hammer break out and provide outlets for the newlyconnected branch wires, any remaining space being lled with cement, thus rendering the entire conduit again water-tight.

In laying the conduit originally I join the adjacent ends of the several lengths with malleable-iron connectors l1 12, (of which one form 1l is shown in detail in Fig. 2,) having spurs 13,which set into holes 14, made near the ends of the conduit.


Having now described my invention in its preferred forms, numerous minor modiiications may be made without avoiding the terms of the following,` claims, which point out the novel features of my invention broadly.

I claiml. A conduit for electric wires having` longitudinal and Jtransverse scorings in its body to facilitate the removal of sections thereof.

2. The combination with a conduit such as described of a U-shaped hood adapted to set over and cover any broken-away section of the conduit.

3. The combination with a conduit such as described of a metallic connector havin g spurs which set into holes made near the adjacent ends of two lengths of conduits.

4. A conduit for electric wires consisting,` of a pipe or casinghaving partitions thereimsaid in presence of two witnesses.

ROBERT W. L'YLE. Vitnesses:


Referenced by
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US2900814 *Feb 25, 1958Aug 25, 1959Carson Samuel RConcrete block construction with a compartment having a knock-out panel
US3642132 *Apr 6, 1970Feb 15, 1972Bird Machine CoAdjustable hard ceramic underflow outlet for hydrocyclone
US3693664 *Oct 15, 1970Sep 26, 1972Hancock Brick & Tile CoModular cellular conduit assembly
US4422385 *Nov 28, 1980Dec 27, 1983Embru-Werke, Mantel & Cia.Office furniture
US5844169 *Aug 9, 1996Dec 1, 1998Sumitomo Wiring Systems, Ltd.Wire duct with a weakened and readily deformable wall for displacing wires held within
US7104068 *Aug 28, 2003Sep 12, 2006Siemens Power Generation, Inc.Turbine component with enhanced stagnation prevention and corner heat distribution
US7193159 *Dec 30, 2005Mar 20, 2007The Wiremold CompanyDivided raceway with downwardly facing outlet devices
US7262371 *Jan 13, 2005Aug 28, 2007The Wiremold CompanyModular raceway with base and integral divider
US7385148Dec 8, 2005Jun 10, 2008The Wiremold CompanyModular raceway
US7456366Aug 24, 2007Nov 25, 2008The Wiremold CompanyModular raceway with base and integral divider
US7544900May 30, 2008Jun 9, 2009The Wiremold CompanyModular raceway with base and integral divider
US7569775 *Jun 30, 2006Aug 4, 2009The Wiremold CompanyT-shaped raceway base scoring system (with slots)
US7635812 *May 19, 2006Dec 22, 2009Cvc Limited 1 LlcConductor raceway separator
US7741568Aug 22, 2007Jun 22, 2010The Wiremold CompanyDownward facing receptacle assembly for cable raceway
US8058555Dec 7, 2009Nov 15, 2011Cvc Limited 1 LlcConductor raceway separator
WO2006076466A2 *Jan 11, 2006Jul 20, 2006Wiremold CoModular raceway with base and integral divider
Cooperative ClassificationF16L9/22