US538429A - External metallic joint for escape-pipes - Google Patents

Description

(Ngs Model.)

M. P. MGR-AN. l EXTERNAL METALLIC JOINT FOR ESCAPE PIPES.

No. 538,429. Patented Aprn 80, 189.5.

i NITEDF STATES PATENT OFFICE.

MYLES F. MORAN, 0F LYNN, MASSACHUSETTS.

lEXTERNAL METALLICJO/INT FOR ESCAPE-PIPES.

SPECIFICATION forming part of Letters Patent No. 538,429,`dated April 30, 1895.

Application led January 14, 1895. Serial No. 534,77 7. (No model.)

.To a/ZZ whom, t may concern.-

Be it known that I, MYLES F. MORAN, of Lynn, countyot' EsseX,'State of Massachusetts, have invented an Improvement in External Metallic Joints for Escape-Pipes, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts. Y

This invention has for its object the production of an external joint for escape pipes, whereby a tight metallic joint may be made above the roof of the building without the use of molten metal.

In making-so called poured joints oaku-m or other similar material is inserted and wedged into the space between the pipe and a surrounding metallic hub, and molten lead is then poured upon the supporting material' and allowed to cool, after which it is usually hammered. This method is dangerous for the workman, as care has to be exercised in handling the molten metal, and in wet or slippery Weather the danger is greatly increased because the proper attention cannot be paid to the movements of the workman, and serious falls frequently occur. I have obviated this by surrounding the escape pipe above the roof with a rigid metallic sleeve, and driving into the annular space between them a wedgelike lead packing ring at the upper end of the sleeve, the ring preferably being tempo rarily attached to the sleeve for convenience intransportation. When hammeredinto place the ring makes a water or moisture tight joint above the roof. u

Figure l in vertical section represents one form of external joint for escape-pipes embodying my invention, the parts being shown in position on a roof. Fig.2 is asimilar view of the joint-supporting sleeve with the packing-ring temporarily attached thereto. Fig. 3 is a modified form, in section, of the sleeve and packing. Fig. 4 is yet another modification to be described, and Fig. 5 represents in section the sleeve with another form of joint at its base.

The upper end of the escape pipe Pis extended through a hole d in the roof a, Fig. l, and a laterally flanged and preferably rigid base @beveled to correspond with the slant of the roof, rests thereupon and surrounds the pipe. The flange h of the base may be of sufficient width to extend under the shingles or slates s, or preferably a sheet of malleable metal c, such as lead or copper, is beaten up around the base and over its flange b', and the shingles are overlapped on this metallic sheet.

A joint supporting sleeve d, Figs. l and 2 preferably flanged at its lower end, as at d', is mounted on the base, surrounding it and the pipe P, the upper end of the sleeve being beveled at its inner end, as at d2, andv forming a projecting lip or shoulder d3. A ring e of lead, substantially wedge-shaped in crossv section, normally rests on the beveled edge cl2 of the sleeve, and is bent over at e under the shoulder d3, to form a temporary attachment between the ring and sleeve, for convenience in transportation, the sleeve and attached ring being slipped over the pipe P until the lower beveled end of the sleeve rests on the base flange b', or upon the interposed malleable sheet c. The workman then hammers the lead ring down tightly into the annular space between the pipe and the upper end of the sleeve a, forming thereby a water tight joint above the roof, and preventing moisture from entering between the pipe and sleeve, the wedge-like form of the packing ring e assisting in guiding it into place.

In the modication shown in Fig. 3 the sleeve f has sharp upper corners, and in casting it is provided with a plurality of preferably pointed projections f, onto which is pressed the depending flange g of the wedgelike packing ring g. When the latter is hammered into place the proj ections f are usually broken offA in the operation, they yhaving no function other thanto form a means for temporarily holding the ringv in place on the sleeve during transportation. 4

e In the modification shown in Fig. 4 the sleeve h is interiorly grooved at h', and the depending portion i of the packing ring vl i bent up to enter it. v

Whatever the form of the upper end of the sleeve, or the means for attaching the packing ring tem porarily' thereto, the sleeve forms a rigid outer Wall for the joint when hammered into place. No oakum or similar pack IOO ing material is required, and the use of molten metal in making the joint is absolutely dispensed with.

By temporarily attaching the joint making ring to the sleeve the two parts are always :ready for use, saving time and labor to the workman.

It will be obvious that when the joint is completed the temporary connectionbetween the sleeve and ring has no further function.

The hub like portion of the base b inserted within the lower end of the sleeve, with the overlapping of the shingles or roof slates s, insures the tightness of the joint around the pipe hole a in the roof.

In Fig. 5 the base of the sleeve m, which in other respects is like the sleeve f, is annularly recessed or grooved at its lower end at m', to receive therein the upturned lip or edge n of a sheet n of preferably malleable metal,such as lead, the shingles overlapping the sheet and the lateral flange m2 of the sleeve, which in thisinstance forms the base. A packing p, which may be either a ribbon of lead beaten into the recess fm between its inner Wall and the lip n', or a poured joint, made before the sleeve is placed in position upon the roof, keeps the junction of the roof and the sleeve moisture-tight, and obviates the use of a separate base, such as b, shown in Fig. 1, and in some instancesis preferable thereto.

When the sheet n is made of lead, the packingp forms a most perfect joint between its upturned lip or and the iron sleeve.

I claim- 1. In an external joint for escape pipes, a rigid metallic sleeve to surround the pipe above the roof, a wedge-like lead packingring adapted to be driven into the annular space between the pipe and the upper end of the sleeve, to form a joint above the roof, and means to temporarily connect said ring and sleeve comprising a projecting portion on one to engage a part of the other, substantially as described.

2. An external joint for escape pipes, consisting of a rigid metallic sleeve to surround the pipe and flanged at its lower end, a laterally flanged base to rest upon the roof, and enter the lower end of the sleeve, a lead packin g-ring adapted to be driven between the pipe and the upper end of the sleeve, to form a joint above the roof, and means to temporarily connect said ring and sleevecomprising la projecting portion on one to engage a part` `of the other, substantially as described.

3. In an external joint for escape pipes, a flanged base to rest on the roof around the pipe, a joint supporting sleeve mounted thereon and outwardly flanged` at its lower end, pointed projections on the inner surface of the sleeve near its upper end, and a wedgelike lead ring attachedto the upper end of the sleeve, by said proj ections and adapted to be driven into the annular space between it and the pipe, and thereby form a joint above the roof, substantially as described..

4. In an external joint for escape pipes, a rigid metallic sleeve to surround the pipe above the roof and havingan annular recess in its lower end, a metallic packing-ring adapted to be driven into the annular space between the pipe and the upper end of the sleeve, to form a joint above the roof, asheet of metal having an` upturnedlip to enter the recess in the sleeve, and a packing interposed between said lip and one wall of the recess, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

Witnesses:

JOHN C. EDWARDS, EMMA J. BENNETT.

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