US1132260A - Method of manufacturing and applying washout-plugs to all steam-boilers. - Google Patents

Description

T. P. HAYES.

METHOD OF MANUFACTURING AND APPLYING WASHOUT PLUGS TO ALL STEAM BOILERS. APILJGATION IEILBD SEPT. 3, 1913.

1 132 260. Patented Mar. 16, 1915.

UNITED STATES PATENT OFFICE.

THOMAS FESTUS HAYES, 0F JACKSON, TENNESSEE, ASSIGNQR 0F TWENTYFOUR ONE- HUNDREDTHS TO HAL HOWARD AND TWENTY-FOUR ONE-HUNDREDTI-IS TO FRANK BOND WILKINSON, OF JACKSON, TENNESSEE.

BOILERS.

Specification of Letters Patent.

Patented Mar. 16, 1915.

Application filed September 3, 1913. Serial No. 188,023.

To all whom it may concern 'Be it known that I, THOMAS FEsTUs' HAYES, a citizen of the United States, residing in Jackson, in the county of Madison, and the State of'Tennessee, have invented a new and useful Method of Manufacturing and Applying WVashout-Plugs to All Steam- Boilers, of which the following is a specification.

This invention relates to washout plugs for steam boilers, and has as its object to provide a plug of such, construction that when properly applied to the boiler sheet, it will be united thereto in a firm manner and sufiiciently tight to provide against leak age and against being blown out.

The invention incidentally aims, however,

to provide a plug of such construction that it may be readily and conveniently removed whenever it is desired to clean the boiler without, however, disturbing the firm connection of its seat with the boiler sheet.

It is one aim of the invention to so construct the seat for the plug proper that the plug will have a maximum area of threaded connection with the seat, and in addition to the threaded connection will have means cooperating with the seat to provide a water and steam tight fit. vide a water and steam tight fit.

The invention also contemplates the provision of means applicable to the outer end of the plug seat for protecting the plug and preventin corrosion of its threads and the threads 0 the seat.

In the accompanying drawings: Figure l is a sectional view through the wash out plug embodying the present invention, the same being shown applied. Fig. 2 is a sectional view through the cap of the plug. Fig. 3 is a side elevation of the plug. Fig. 4 is a side elevation of the seat for the plug.

Corresponding and like parts are-referred to in the following description and indicated in all the views of the accompanying drawings by the same reference characters.

As indicated above, the plug embodying the present invention comprises a seat, a plug proper removably fitted in the seat, and a cap removably fitted to the seat for the purpose of protecting the plug, and of these elements, the seat is indicated in general by the numeral 1 and is substantially of tubular form, it being provided with a' threaded bore 2 which is cylindrical and into which is adapted to be fitted the plug proper. Exteriorly the seat 1 is tapered from its middle toward each end and the seat is, therefore, of greater diameter at its middle than at its ends, the taper being indicated by the numeral 3.

Exteriorly the seat is threaded throughout the length of each of its tapered portions, one threaded end being indicated by the numeral 4 and the other by the numeral 5. The threaded end 4 of the seat is intended to be permanently fitted into the boiler sheet and the end 5 is adapted to have fitted to it the cap heretofore referred to.

The plug proper comprises a solid, substantially cylindrical threaded body 7 which is of a length substantially equal to the length of the threaded portion of the bore of the seat and at one end the, said body is provided with a circumscribing outsanding flange 8 which has its under side plane and which has its upper side in a plane with the end face of the plug. The flange 8 is of a diameter to fit snugly against the end of the seat and when the plug is threaded into the seat, the flange will rest at its under side against the said end of the seat, whereby to provide a water and steam tight fit between these parts. For convenience in applying and removing the plug, it is formed in its said end with a squared socket 9 into which may be fitted a suitable wrench.

The cap above referred to is indicated by the numeral 10 and is interiorly threaded, as at 11, and provided upon its closed end 10 with a squared head 13, which may be engaged by a wrench for the purpose of applying the cap to and removing the same from the outer end of the seat 1.

In applying the plug to a boiler sheet, the

seat 4 is fitted securely at one end inan opening formed in the sheet, and being slightly tapered, it will be securely and permanently held in place. The plug proper is then fitted into the bore 2 and tightened until its flange 8 bears firmly against the end of the seat, whereby to form a steam and water tight fit. The cap 10 is then threaded onto the outer end of the seat until its closed end 12 bears at its inner face against the outer end edge of the flange 8. It will be apparent that the cap fprotects the plug and prevents corrosion its threads, which would beliable to cause'the plug to stick and therefore be diflicult of removal and that it serves also by reason of its en agement with the flange 8 to hold the ange firmly against the end of the seat 1.

By reference to Fig. 1 of the drawings it I will be observed that the outer edge of the flange upon the, plug is snugly engaged by r the inner surface of the cap and that the wall or flange of the cap spans the junction of the plug, the flange and-the seating end of the .plug, soas-to form a steam tight-connection. I

Having thus described the invention, what isclaimed as new is: a

'1. A wash-out plug for steam boilers com- I prisinga bushing having a threaded bore and exterior threads, the outer end of the bushing being flat and constituting a seat, a removable plug having exterior threads engaging the threads of the bore andprovided with a terminal flange bearing against the seat of the bushing, and a cap engaging the exterior threads of the bushing and bearing againstthe flange for binding the flange in engagement with the seat.

2. A wash-out plug for steam boilers com-' prising a bushing having a threaded bore, the exterior of the bushing being tapered and threaded, and one end of said bushing being flat and constituting a seat, a'removable, plug having its exterior threaded and.

engaging the threads of the bore, one end of the plug being provided with a wrench receiving socketand having a laterally extending fiange rovided with a flat lower face adapted to ear against the seat of the bushing, and a cap forming a closure for the outer end of the plug and provided with a circumferential flange having interior threads for enga ement with the exterior rectly with the interior'of the boilernnd having its walls threaded, the outer end of the bushing being provided with a flatfface an dconstituting a seat, a solid plug having walls of the bore and provided with a terminal flange adaptedto bear againstthe seat for the plug and provided with an internally threaded'flange engaging the exteriorthreads of the bushin THosi E sf rU s HAYES.

Witnesses: Y J. SCHENVEL,

C. Rlcmuwsonw exterior threads engaging the threaded of the bushing, and a'eapv forming a closure v

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