US829509A - Boiler-flue. - Google Patents

Description

PATENTED AUG. 28, 1906.

J. M. UROZIER. BOILER FLUE. i Muon-Ion uns un. 1a, woe.

I irl" co., luumlloan D L.

flue-sheets of the boiler, to which the UNITED STATES PATENT OFFICE.

BoiLEFi-FLUE.

Specification of Letters Patent. j

Patented Aug. 2B, 1 906.

Application filed January 18,1906. Serial No. 296,633.

To all whom it may concern:

Be it known that I, JOHN M. Onozina, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Detachable Boiler-Fluss; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide certain improvements in detachable boilerfines; and it consists of the novel devices and combinations of devices hereinafterdescribed, and defined in the claim.

In the accompanying drawings, which illustrate my invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure i is a vertical section taken longitudinally and centrally through the detachable boiler-fine and through the flue-sheets, to which it is. shown as applied, some parts being broken away. Fig. 2 is a plan view of the right-side end of the flue shown in Fig. 1, the fine-sheet only being sectioned; and Fig. 3 is an end elevation looking at the right-hand end of the detachable iiue.

The numeral 1 indicates laterally-s iaced ue 1s shown as applied. The numeral 2 indicates the fine. At one end the flue is slightly enlarged at its exterior surface, so as to form an inwardly-tapered slightly-conical sleeve portion 3, that is rigidly and integrally formed therewith. The other end of said flue is threaded externally at 4, and on this threaded portion works a slightly-conical inwardlytapered sleeve 5, which is preferably formed with notches 6 at its enlarged end, so that it may be turned by a suitable wrench or tool.

The seats 7 in the flue-sheets i are tapered to correspond to the taper of the respective cooperating sleeve portions 3 and 5. Annular bushing or acking rings 9, of copper or other comparatively soft metal of high fusibility, are interposed, in the one instance, between the tapered sleeve 3 and ('.oiiperating tapered seat 7 and, in the other instance, between the tapered sleeve 5 and the cooperating tapered seat 7. These pliable or ductile packing-rings 8 are placed within their seats 5 in advance of the application of the flue and by a swaging, rolling, or other action are permanently secured within their seats by having the projecting portions of the said packing-rings pressed outward or slightly beyond the respective seats 7 on the opposite sides of the liuc-sheet.

The manner of applying the fine is probably obvious, but may be briefly stated as follows: IVhile the removable sleeve 5 isremoved from the fiue, the flue is inserted through one of the seats 5 and its sleeve ortion 3 is driven or otherwise forced in c ose and tight engagement with the cooperating relatively fixed bushing 8. Then the sleeve 5 is screwed onto the other end of the flue and is tightly forced into the other bushing 8. The taper of the sleevc portions 3 and 5 is so slight that very little lateral pressure will be put upon the Vflue-sheet, while very great pressure will be put upon the cooperating bushings 8. The bushings swaged or upset, so that they permanently hang to their seats in the flue-sheet, forni extremely close and tight joints therewith and cannot possibly get out of piace in applying the fiue or in removing the iiue. This feature is therefore very important.

The iiue described is of small cost, and in actual practice it has been found efficient for the purposes had in view.

The seats 7 in the laterally-spaced fineshects l are of the saine diameter. The sleeve portions at the opposite ends of the 'flue are of the same diameter, and the softmetai bushings 8 are of the same diameter and thickness. This construction makes it possible to insert the fiue either into the oiler-to wit, in Fig. 1 either from the left toward the right or from the right toward the left. It is of course desirable to always have the projecting sleeves 5 within the smokebox as distinguished from the fire-box and the boiler, because of the fact that the rigid or integrally-formcd sleeve portions 3 are better adapted to stand intense heat than are the said sleeves 5.

What l claiiii, and desire to secure by Letters Patent of the United` States, is as follows:

InV a boiler, the combination with laterallyspaced flue-sheets having tapered flue-seats of the saine diameter and taper, of a Hue having at one end a `fixed conical sleeve ortion, and at its other end a screw-thrcadec conical portion, said two conical sleeve portions having the same diameter and the saine taper as said flue-seats, and annular packing-rings of lOO relatively soft material but ol high fusibility In testimony whereof I affix my signature interposed lbetween siid conical sleevz Iaorin presence of two Witnesses.

tions and tie surroun ing seats in sai l ue A Sheets, and which packing-rings are swfiged l JOHN M CRO/IER or upset at their .inner and outer portions so Witnesses:

that they are permanently secured in the MALIE HOEL,

said flue-seats, substantially as described. F. D. MERCHANT.

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