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Publication numberUS144843 A
Publication typeGrant
Publication dateNov 25, 1873
Filing dateFeb 1, 1873
Publication numberUS 144843 A, US 144843A, US-A-144843, US144843 A, US144843A
InventorsGeoege Goldsmith
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Improvement in apparatus for removing obstructions from gas-pipes
US 144843 A
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Description  (OCR text may contain errors)

G. GOLDSMITH & J. DILKES.

Apparatus for Removing Obstructions from Gas-Pipes.

No. 144,843. Patented Nov.25,1873.

NITED STATES PATENT OFFICE.

GEORGE GOLDSMITH AND JAMES DILKES, OF LEICESTER, ENGLAND.

IMPROVEMENT IN APPARATUS FOR REMOVING OBSTRUCTIONS FROM GAS-PIPES.

Specification forming part of Letters Patent No. 144,843, dated November 25, 1873; application filed February 1,1873. I

To all 'whom it may concern:

Be it known that we, GEORGE GoLDsMrrH and J AMES DILKES, both of Leicester, in the county of Leicester, England, have invented Improvements in the Means of and Apparatus for Removing Obstructions from Gas-Pipes, of which the following is a specification:

The mains and scrvice'pipes used for the sup ply of gas are liable to become choked with naphthaline and other deposits, whereby the fiow of gas is interrupted or entirely stopped. \Vhen this occurs great inconvenience has been experienced for the want of some simple method for efi'ectually clearing the pipe. The object of this invention is to aflord ready means for meeting what has hitherto been a difiiculty; and consists in constructing a plug in which a barrel or chamber is formed. Into the outer or breech end of the plug apercussion-cap nipple is screwed, the hole in the nipple being in communication with the barrel, which is furnished at the other end with a ring having a taper female thread, so that it can be screwed onto the extremity of the barrel.

In order that the construction of this piece of apparatus may be more easily understood, reference is made to the accompanying drawings, of which the following is a description:

Figure'l represents the apparatus in eleva tion, and Fig. 2 a vertical section of the same.

A is the chamber or barrel partiallyfilled with gunpowder; B, the ringwith taper thread; 0, the nipple upon which the percussion-cap is placed when it is to be discharged, and D l) a washer.

The mode of applying the apparatus is as follows: The barrel or chamber of the plug is filled with gunpowder or other suitable explosive substance, a piece of tissue or thin paper being put over the end of the barrel, and the ring (which, being formed with a taper thread, will thus admit of the intervention of a piece of paper) is then screwed on, to keep the paper in its place and prevent the powder from escaping. A coupling-piece is attached to the offending pipe, and the plug, charged as described, is screwed intoit, the barrel extend ing a short distance within the pipe. A percussion-cap is then applied to the nipple, and upon the cap being struck by a hammer or otherwise, an explosion of the powder follows, the result being the removal of any obstruction that may exist in the pipe.

This apparatus is specially adapted for the cleaning of services, but with slight modification it may be suitable for operating upon pipes of larger caliber.

We claim- 1. The described process of removing obstructions from pipes, consisting in the employment of explosive materials, as and for the purpose described.

2. The apparatus described, consisting of a itube, A, having nipple C and ring B, the tube being adapted to' be screwed into a pipe, as

and fort-he purpose described.

GEORGE GOLDSMITH.

- JAMES DILKES.

\Vitnesses:

' JOHN JOSHUA CARRYER,

RICHARD CHARTERS.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2752272 *Dec 9, 1952Jun 26, 1956Standard Oil CoRemoval of coke from tubes
US3222222 *Aug 28, 1961Dec 7, 1965Shochiku KanRotary kiln and method of freeing same of a fire ring therein
US4089702 *Jan 27, 1977May 16, 1978Nitro Nobel AbMethod of cleaning internal surfaces employing an explosive gas
US6508157 *Mar 4, 2002Jan 21, 2003James S. BrownTool for unblocking heavy machinery
WO2003076140A2 *Mar 3, 2003Sep 18, 2003Brown James STool for unblocking heavy machinery
Classifications
Cooperative ClassificationB08B7/0071, C11D3/0057