US587667A

US587667A - alley

Info

Publication number: US587667A
Authority: US
Publication date: 1897-08-03
Anticipated expiration: 1914-08-03

Description

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INVENTOR H I 5 ATTORNEY? Patented Aug. 3,1897.

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S ALLEY STEAM BOILER.

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S. AL I STEAM B R.. No. 587,667. Patented Aug. 3,1897.

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WITNESSES UNITED STATES PATENT ()rrrcn.

STEPHEN ALLEY, OF GLASGOIV, SCOTLAND.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 587,667, dated August 3, 1897. Application filed June 5, 1897. Serial No. 639,541. (No model.) Patented in England February 13,1896,N0. 3,278.

To all whom it may concern:

Be-it known that I, STEPHEN ALLEY, a subj ect of the Queen of Great Britain and Ireland, and a resident of Glasgow, Scotland, have invented certain Improvements in and Connected with Steam-Boilers, (for which I have obtained British Patent No. 3,273, dated February 13, 1896,) of which the following is a description.

My said invention comprises an improved construction of steam-boiler suitable for high or other pressures, and which, while securing efficiency, has compactness with accessibility of all parts and other advantages.

Two modifications of boilers as made according to my invention are shown on three accompanying sheets of explanatory drawings, Figures 1 and 2, on Sheet 1 thereof, being, respectively, a front and a side elevation of one modification, and Figs. 3 and 4, on Sheet 2, being, respectively, a transverse vertical section and a longitudinal vertical section of the same. Fig. 5, on Sheet 3, is a transverse vertical section of a second modification and Figs. 6 and 7 are views, at right angles to each other, of details of the same;

In the drawings the same reference-letters are used to mark the same or like parts wherever they are repeated.

The modification of my improved boiler shown in Figs. 1, 2, 3, and 4 of the drawings comprises a number of sections of a vertical fiat form, each section consisting of a rectangular arrangement having two header orend pipes A, connected by numerous tubes B, and being placed with one diagonal vertical. Two sets of the sections are combined in the boiler with their horizontal diagonals in the same horizontal plane, and present angular spaces F and C above and below, in the latter of which the furnace G is placed. The tubes B in each set or wing are placed parallel to the outer lower side and the inner upper side of the rectangle, or they mightbe placed at right angles to those sides. In all cases, however, all the tubes 13 of a set of sections are parallelto each other,while the tubes of one section are placed opposite the spaces between the tubes ofthe adjacent sections.

furnace 0 pass from the inner end in two streams from back to front through and among The fire-gases from the the tubes 13 of the two sets of sections, and from the front enter the space F in the upper angle between the two sets of sections, where they act on two (or it might be one or more than two) steam-drums D on their way to the uptake E. The gases are compelled to take the course described by brick or other partitions G, suitably arranged. More than two of the sets of sections may be arranged in a horizontal row, with furnaces in the lower angular spaces between the sets.

The tubes B are necting pipes A, which are preferably of approximately square section, by being expanded in holes in the pipes, external holes being formed to admit the expanding-tool,

and being closed by screw-plugs,'which are made recessed or hollow, when in positions in which they are exposed to strong heat. The upper header or connecting pipes A are sepa rately connected to the steam-drums D, and the lower header or connecting pipes are separately connected to bottom water-drums J, so that each section of tubes can be detached while leaving the other sections untouched. The downward flow of the water is provided for by externalpipes K, connecting the steam-' drums 'D with the bottom water-drums J. The stean1drums D are-connected by short pipes L, which also act as distance-pieces. A metal casing H incloses the parts, and it is provided with doors N for each set of sections for the purposes of examining or cleaning the tubes.

The modification of my improved boiler shown in Figs. 5, 6, and 7 comprises an improved mode of fixing the header-pipes A to the steam-drums D and water-drums J. In this case stools or joint connect-ions P, shown as being interposed between the header-pipes A and drums D and J in Figs. 1, 2, 3, and at, are dispensed with and the header-pipes are fixed directly to the drums. Facings Q are formed on the drums, and the header-pipes A, which are square in section, are fixed to them by stud-bolts R, which pass through distance tubes or pieces S within the header-pipes for strengthening purposes. The header-pipes A are blind at both ends, comm unication with the drums D and J being effected through lateral openings T. The other parts of this fixed to the header or conmodification are constructed and arranged similarly to the corresponding parts of the modification previously described.

YVhat I claim is A steam-boiler comprising two or more sets of rectangular sections or elements, each set of sections being constructed with watertubes all parallel to each other and arranged,

each with one diagonal vertical, and the sets of sections presenting between them upper and lower angular spaces, respectively for the l Vi tn esses WILLIAM HASTIE, GEORGE PATTERSON.