US506930A - External joint for escape-pipes - Google Patents

Description

Patented 001;. 17,1893.

JW @M 'is made thoroughly Water tight.

UNITED STATES PATENT Futon.

FREDERICK R. NIES AND FRANCIS J. LINNEHAN, OF SWAMPSCOTT, MASSACHUSETTS.

EXTERNAL JOINT FOR ESCAPE-PIPES, 86C.

SPECIFICATION forming part of Letters Patent No. 506,930, dated October 1'7, 1893. Application filed July 3,1 893. Serial IIo. 479,458. ((No model.)

T0 @ZZ whom t may concern:

Be it known that We, FREDERICK R. NIES and FRANCIS J. LINNEHAN, both of Swampscott, county of Essex, State of Massachusetts, have invented an Improvement in External Joints for Escape-Pipes, dac., of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts. a

This invention has for its object the production of a simple and convenient external joint for escape pipes, dac., whereby the joint Such joints are now made, so far as known to us, by forming acylinder of lead, sheet brass, dac., to the lower end of which a flange is braze'd or soldered, the cylinder surrounding the pipe projecting from the roof and having its lower end cut at an angle to correspond with the pitch of the roof, the ange being secured thereto in any suitable manner, or sheetlead is hammered into place around the escape pipe, and the better the job the more nearly will the joint become water tight. These and other devices and methods are cumbersome, expensive, and not satisfactory.

In accordance with our invention we surround the pipe with preferably a cast lead hub provided with an integral supporting iiange set at the proper angle to correspond with the pitch of the roof, and with said hub we combine a flanged sleeve or collar to support the packing above the roof, substantially as will be described.

Figure 1 in vertical section represents a portion of a roof with our invention applied thereto, the escape pipe being shown in dotted lines. Fig. 2 isasection al detail of the flanged sleeve or collar, and Figs. 3 and 4 are sectional views of modifications to be referred to.

In carrying out our invention we preferably cast a cylindrical hub a upon a base or flange a', of lead or other suitable metal, lead being preferred because of its cheapness and facility to be worked, the base being at an angle with relation to the hub a determined by the pitch of the roof to which it is to be applied. A sleeve or collar b, shown separately in Fig. 2, having an inturned iiange b',

and preferably of cast iron, is inserted in the upper end of the hub, reduced in thickness thereat to leave a shoulder a2 upon which the sleeve rests, and the upper end of the hub is bent down over the top of the sleeve, as at a3, eectually preventing the entrance of any moisture between the hub and sleeve. It' desired the sleeve may be placed in the mold and the cylindrical hub a cast about it. The projecting end of the pipe P, see dotted lines, passes snugly through the annular flange h', which sustains the packing, not shown, after which molten lead is poured into the space between the pipe P and the hub, in well known manner. The necessity for a temporary stop or dam of putty or other material is thus obviated, for the opening of the joint is horizontal, and the molten lead can be poured directly upon the packing sustained by the iange b', and the sleeve strengthens the hub at the point Where the joint is made. A perfectly tight joint is thus possible, for the hardened lead makes a solid water-tight entirely around the pipe and between it and the cylindrical hub a.

The shingles or slates soverlap thebase or Vliange a upon the upper side of the joint,

and at the lower side the flange is bent as at ax to cover or lap over the upper edges of the first tier of slates or shingles s', so that water or moisture cannot iind its way in between the flange and roof at the base of the cylinder.

In Fig. 3 we have shown a modified form of ourinvention, in which the sleeve is extended below the iiange, as at bx, and has an outwardly turned fiange b2 adapted to tit in a suitable recess a5 in the base a. The hub and flange in this instance of our invention may be either cast around the sleeve as a core, or the sleeve may be inserted therein from the bottom, the top of the hub being bent over as at a". As shown in this modification the sleeve stiffens the hub and joint, and is very useful where the pipes are large.

Yet another modification is shown in Fig. 4, wherein the sleeve b, having the usual flange b', and an outwardly turned base b3, incloses the cylindrical hub a., the base b3 resting on the cast base a. The hub a extends up to and is covered at the top by the flange b of the sleeve, the sleeve being substantially the same as that shown in Fig 3.

By referring to the various figures of the drawings it will beobserved that in all cases the outer wall surrounding the joint is formed or strengthened by the sleeve, the ductility of the hub and its base flange readily adapting it to be tightly and easily secured to the roof or other portion of the building to which it is applied.

Our invention is not limited tothe exact construction and arrangement herein shown,

nor to any particular metal or metals, the4 vided with an inturned ange to` surround the pipe at the upper end of said hub and sustain the packing and joint between the pipe and sleeve at such point above the roof, substantially as described. l

3. An external joint for escape pipes, &c.,

consisting of a cylindrical hub and base of,

malleable metal, combined .with a rigid con centric metallic sleeve having an iuturned flange and an upwardly extended portion to surround the pipe, to form the bottom and outer wall for the joint, substantially as described.

4. An external joint for escape pipes, dac., consisting of a recessed cylindrical hub and au extended base, combined with a rigid metallic sleeve having an annular flange to surround the pipeand an outwardly turned flange to enter the recessed hub, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

FREDERICK' R. NIES. FRANCIS J. LINNEHAN. Witnesses:

J AMES H. SIsK, RICHARD L. SIsK.

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