USRE10561E - Means for - Google Patents

Description

INVENTR.

Reissued Feb. 17, 1885.

ATTORNEY.

' To all -zuhom `it may convainc n inflammable or explosive gas; and my `inizo an underground gasmain,

y' also, in the combination,

packing, 2,'composed of fragmentsiof solid maf arson-:carton forming pm Atbe-application of UlxuTEoA STATES .PATENT OFFICE.

GEORGE vvusirilte'rroiisis,l uit., or PITTSBURG, rus-NSYLVAN'IA- MEANS 'reclame-irriteren;AKS IN GASQMAIVNS.

of Reilllisd Letters Patent No.' 10,561, dated February 17, 1885.

' 1 original No. soeurs. amd ombel- 14, 1ss4. Appunti@ for reissue inea Jimmy 2r, was.

Be itknown that, I, Gnomiz-1 Waerme` H0 E, Jr., a citizen of the United States, residing at Pittsburg, in the county of Allegheny: and State of Pennsylvania, have invented or discovered a certain'new and useful Improvementin Meansl for Detecting-.Leaks in Gas- Mans, of whichimprovemeutthe following is a speci iication. Y

' In the accompanying drawing, which makes part of this specification, the figure is a transversesection through a roadway illustrating l my invention." f

Theobjectof my invention is to enable the existence and'comparative extent of leaksI in ng algas-conducting -n'minto be readily detected, to the' end of lpreventing 'accident from the escape in quantity of provement consists in thecombinatiom withl of a detector-pipe leading from a' poiutadj-acent to the gas-main to a point above. the surface of the groundwith an uudergroun main, of- `bod ies 'of packing composed of cose fragments of solid material surrounding the joints ofthe main, and a series of detectorpipes each leading from one of said bodiesof lpackin'gjtoa point above the surface of the ground, as hereinafter more fully set forth. In the practice of my invention I surround the gas-main 1 at and adjacent 'to the joints betwen'its several membersJ the connections with branch lines, or other points`at which leakage may be appreheud ed, with a body of adjacent to said main to n.4 point ab'ovethe'snrface of the glrouud,'substantially as set forth.

terior.

point above' the open, and may, if desired, be provided witha hood,-5, to prevent access of water to its inv In the event of leak the main, the gas escaping therefrom will per meate the interstices of the loose packing 2, and pass therefrom through the detector-pipe 4 to the atmosphere, and an inspector, by testing the several detector-pipes by the application of a light to their, ends, can ascertain the existence and location of leak-s in the line, as'

well as judge of their extentby the nature o'f the combustion off the escaping gas. "In ordeutoprevenf, liability. tn accident by e ignithm of fhef'gaswiilfl'th'epacking, screens or diaphragme of iine wire-gauze or perforated sheet metal may be interposed at any convenient The packing 2 is readily located and removed as required-in laying and repairing the line, and no openings in or connections with the main 1 are necessary.

I claim herein as my invention- 2. -The combination of a gas-main, a package ata joint of points in the derector-pipes.

ing of solid material having-intercommunicat ing interstices andsurronndiug ajoint of said main, saidpacking being inclosed by the ground in 'which the main 'is laid, and a detector-pipe leading from said packing to a surface terialas broken stone, coarse gravel, small stantially as set forti),l w

`scrap mellllforthe like-loosely arranged lIntcstiniony wlfieeo!l I hay liereuuto set my' around-thejoint,so asto'presen taseriesofinterhanla i communicating interstices or spaces throughl ng 2, which' is covered and inf' sides by the'g'round 3, in which laid. A detector-pipe, 4,opeus thefmain is of the ground, su b-

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