US422211A - James william helps - Google Patents

Description

(No Model.)

J. W. HELPS. DEVICE POR DISJOINTING MAINS.

Patented Feb. 25, 1890.,\\

` UNITED lSTATES PATENT OEEICE.

JAMES VILLIAM HELPS, OF OROYDON, COUNTY OF SURREY, ENGLAND.

DEVICE FOR DISJOINTING MAINS.

SPECIFICATION forming part of Letters Patent No. 422,211, dated February 25, 1890. Application 'led May 8, 1889. Serial No. 810,001. (No model.) Patented in England August 17, 1888,1T0. 11,914.

To all whom t may concern:

Be it known that I, J AMES WILLIAM HELPS, a subject of the Queen of England, residing at Croydon, in the county of Surrey, England, have invented certain new and useful Improvements in Devices for Disjointing Mains, (for which 1 have obtained a patent in Great Britain, No. 11,914., bearing date August 17, 1888;) and I do hereby declare the following to be a full, clear, and exact description of the invention, such asV will enablev others skilled in the art to which it appertains to make and use the same.

In an application filed of even date herewith I have described and claimed a method of disconnecting at the socket and spigot joints the sections of a gas, water, or other fluid-conducting main.

The present application relates to the devices wherebythe separation of said main or pipe sections are effected.

In the accompanying drawings, illustrative of my invention, Figure 1 represents in side elevation a trench containing a gas or other main provided with my improved devices. Fig. 2 represents in end elevation and on an enlarged scale the clip forming an element of one of the devices for effecting the separation of the mainor pipe sections; and Fig. 3 represents the clip in side elevation, together with a screw forming the other element of said device.

Similar numerals of reference indicate si1ni lar parts throughout the several views.

Referring to the drawings, 1 indicates a trench, Within which is disposed in the usual manner a gas, Water, or other main made up Y of a number of sections 2 3 4f, duc., connected by the ordinary separable spigot and socket, joined as indicated. y

In carrying out my invention I first lay bare the main or the portion of its length which it is desired to remove, and then cut out the portion of said main in the ordinary manner. This being effected, the purpose of my invention is to disconnect the several re-s maining sections at the spigot and socket joint, so as to save the trouble, expense, and loss incurred by the method heretofore prac ticed of cutting the main at such joint. To this end 1 place across 'the trench a suitable fulcruinabloclr 5, and by means of the chain 6 and lever 7 raise the free end of the cut section of the main sufficiently high to allow of the introduction of a stout block 8 beneath the end of the adjoining pipe 2. In case of heavy pipes it may be found convenient to raise them into this inclined position by blocks and falls. I now clasp or clamp around the end of the pipe 3 the clip illustrated more fully in Figs. 2 and 3. This clip consists of arms 9 10, preferably of strong wrought-iron or other suitable material, hinged or otherwise connected, at1l', as shown, and bent into form corresponding` to the outer contour of the main. At their upper portions the arms 9 10 are provided with prolongations 12 13, having apertures through which pass lugs or pins 14 15, externally screw-threaded at their outer ends for the reception of clamping-nuts `16 17, said lugs 14 15 being integral with a block 18, as shown. The block 18is internally screwthreaded for the reception of the screw 19, which fits therein. The main being in the inclined positionlillustrated in Fig. 1, the clip is placed upon the end of the section 3, as indicated in the said figure, and by revolving the ends 1G 17'by means of a suitable wrench the curved arms 9 10 of the clip are caused to clasp tightly the periphery of said pipe end, so as to permit the clip to maintain its fixed position upon the pipe during the subsequent operation. The free end of the main orpipe section 2 is now raised, thereby raising also the pipe-section 3, whereupon the pipe-sections 2 and 3 are allowed to drop suddenly upon block 8. The effect of this jar, which may be repeated once or twice, if necesn sary, will be to loosen the joint and draw the socket away at the top side. The screw 19 is then turned by hand until its end abuts against the edge of the socket-rim, as shown in Fig. 3, and the process of lifting and dropping is repeated. This will still further draw the socket end of the pipe 2 from the spigot end of the pipe 3, as the socket-arm will be prevented by the screw from regaining its original position. The repetition of the operation of lifting and dropping and tightening up the screw will in a short time` comn pletely draw the socket' end of the pipe 2 from the spigot end of the pipe 3, thereby disconnecting the joint and enabling the pipe-secl tion 2 to be lifted from the trench in the orn ICO dinary manner. The lead packing may thereupon be readily collected and recovered.

It will be evident that the size of the projections 1l 15 upon the block 18 must be so proportioned to the size of the openings in the clip-arm projections 12 13 as to readily pass through the same when the clip has been placed upon or removed from the main.

Instead of the block 1S, a modification may be employed in which one or both of the arms 1415 may be movable. In such case the arms will be provided at their outer edge with square or hexagonal heads, and will'be screw-threaded at their inner, ends, so that they may pass through the holes or apertures in the clip-arm projections 12 13 and enter internally-screw-tlireaded recesses in the side of the block. ing'the arms or bolts the clip may be made to clasp the pipe or main tightly, as before.

Having thus 'described my invention, what I claim is l 1. A device for use vin disconnecting the joints of mains and pipes, consisting of hinged clamping-arms 9 10,A adapted to encircle a pipe, means for drawing together the free ends of said hinged arms, an internallyscrew Vith this construction by turnthreaded block, and a screw fitting said internal screw-thread, substantially as described.

2. A device `for use in .disconnecting the joints of mains and pipes, consisting of hinged clamping-arms 9 10, adapted to encircle a pipe and having projections 12 13, provided with apertures, and block 13, internally screwthreaded and having pins 14 15, screw-threaded at their outer ends and passing through the apertures in the projections 12 13, clamping-nuts 16 17, and the screw 19, fitting the screw-threaded opening ofthe block 18, substantially as described.

3. The combination ofa support S, adapted to maintain asection of a main in an inclined position, and clamping-clip encircling said main and provided with an adjustable screw adapted to abut against the arm of a socketjoint, and a lifting device connected to the free end of a pipe-section, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES VILLIAM HELPS.

NVitnesses:

EDMUND S. SNEWIN, W. T. MARSHALL.

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