US813768A - Boiler-tube. - Google Patents

Description

PATENTED FEB. 27, 1906.

W. G. BRAGKEN.

BOILER TUBE. APPLICATION FILED AUG. 23,1905.

I WITNESSES @WJ UNITED STATES PATENT OFFICE.

BOILER-TUBE.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed August 23, 1905. Serial No. 275,471.

To all whom it may concern.-

Be it known that 1, WILLIAM G. BRAOKEN, a resident of Gallitzin, in the county of Cambria and State of Pennsylvania, have invented a new and useful Improvement in Devices for Leaky Boiler-Tubes; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to devices for leaky boiler-flues, and has for its object to provide a cheap, simple, and efl ective device which can easily and quickly be applied to a leaky boiler-flue at any time and without the em ployment of any complicated machines or tools in handling the same.

My invention consists, generally stated, in the novel arrangement, construction, and combination of parts, as hereinafter more specifically set forth and described, and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct and use my improved device for leaky boilerflues, I will describe the same more fully, referring to the accompanying drawings, in which Figure 1 is a side elevation, partly in section, of my improved device for leaky boilerflues, showing the same applied to a boilerflue. Fig. 2 is a cross-sectionof the same with the flue-sheets removed and looking at one of the ends of the device.

Like symbols of reference herein indicate like parts in each of the figures of the drawings.

As illustrated in the drawings, A represents one of the ordinary boiler-flues, which is usually set Within a boiler and between and through the flue-sheets a and a, which are located at the fire-box end and the smokebox end, respectively, of the boiler. In case of a leak within such flue A and at any part thereof and it is desired to stop the water from entering said flue a tube 1 is provided, which is slightly smaller exteriorly in diameter than the interior diameter of said flue, and one end 1 of said tube is screw-threaded exteriorly, as at 2. A flexible or yielding washer 2, formed of graphite, asbestos, or other suitable non-combustible material, is placed over said end 1 of the tube, and then a collar or nut 4 is screwed onto said portion 2, so as to come against the washer 2 when in position. The tube 1 can now be placed within the flue A at the fire-box end of the boiler by inserting the end 1 of said tube into the flue and passing the same through said flue so that the said end 1" will extend beyond the flue-sheet a. A like non-combustible and flexible or yielding washer 5 is then inserted over the end 1 of said tube 1, and then a metal washer 6, which is exteriorly threaded to engage a threaded portion 2 on said end 1", is screwed onto said tube end and against the washer 5 to press the same against the face of said flue-sheet a, after which a collar or nut 7 is placed on said end and screwed upon the threaded portion 2 thereof against the metal washer 6. When the washer 6 and nut 7 have been screwed up into place, the washers 2 and 5 will be pressed tightly against the faces of the flue-sheets a and a, thereby bringing the tube 1 to a central position and forming an annular chamber 8 between the interior of the flue A and the exterior of the tube 1 and the flue or draft chamber 8 within the same to take the place of the boiler-flue A, so that the water Within the boiler will enter and circulate within such chamber 8 through the leak in the flue A and the smoke will pass from the fire-box through the draft-chamber 8 to the stack.

The collars or nuts 4 and 7 on the ends 1 and 1, respectively, of the tube 1 have, preferably, the usual hexagon-shaped faces 9 thereon, so that they can be screwed and unscrewed on said ends by the ordinary monkey-wrench; but in case said nuts are in close proximity to the sides of said boiler or in such a position that they cannot be engaged by a wrench said nuts can be provided with seats 9, formed in the points or apices 9 of said faces 9 in order that the ordinary spanner- Wrench can engage said seats by its pins to screw or unscrew said nuts on said tube.

Various other modifications and changes in my improved device for leaky boiler-flues may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

It will thus be seen that my improved device for leaky boiler-flues can be applied to any form of a tubular boiler and when in use will permit a free circulation of water within and around the leaky flue to which it is applied. The device will prevent any water from leaking through the tube at any point by reason of the chamber formed within the same for catching the leaking water and by the tight joints formed at each end of the device through the medium of the flexible or yielding washers on said device and held tightly against the flue-sheets of the boiler.

'It will be evident that the device can be inserted in any leaky boiler-flue at either end, and when applied at the smoke-box end while the fire is in the fire-box the fire can be spread or banked to allow the same to be applied, and thereby permit the steam to remain in the boiler. It will also be evident that there will be no shutting or closing up of the boiler-flue by the use of the device and a draft-chamber will be provided in the device to take the place of the boiler-flue and without interfering in any manner whatever with the passage of the smoke through the flue formed by the device to the stack, while all liability of any water leaking through the boiler-flue into the fire-box and putting out the fire therein is overcome, as well as the possibility of boiler-explosions by such leaky flue is thereby prevented.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination with the flue-sheets, of a leaky boiler-flue extending through said sheets, a tube within said flue for forming a chamber therein to close off the leak and for permitting the passage of the smoke through the same, and means fitting against said fluesheets for forming a tight joint and for securing said tube in place.

2. The combination with the flue-sheets, of a leaky boiler-flue extending through said sheets, a tube within said flue for forming a chamber therein to close ofl the leak and for permitting the passage of the smoke through the same, and means on the ends of said tube and fitting against said flue-sheets for form ing a tight, joint and for securing the same in place.

3. The combination with the flue-sheets, of a leaky boiler-flue extending through said sheets, of a tube within said flue for forming a chamber therein to close off the leak and of a leaky boiler-flue, of a tube within saidflue for forming a chamber therein to close off the leak and for permitting the passage of the smoke through the same, washers around the ends of said tube, and nuts engaging with the ends of said tube and with said Washers and pressing the same against the flue-sheets tcl form a tight joint and secure said tube in ace. p 5. The combination with the flue-sheets, of a leaky boiler-flue, of a tube within said flue for forming a chamber therein to close off the leak and for permitting the passage of the smoke through the same, yielding washers around the ends of said tube, a metal washer around one end of said tube, and nuts engaging with the ends of said tube and with said washers and pressing the same against the flue-sheets to form a tight joint and secure said tube in place.

In testimony whereof I, the said WILLIAM C. BRAoKEN, have hereunto set my hand.

' WILLIAM C. BRACKEN. Witnesses:

- JOHN P. BRACKEN,

J. N. CooKE.

Images