US461383A

US461383A - auild

Info

Publication number: US461383A
Authority: US
Publication date: 1891-10-13
Anticipated expiration: 1908-10-13

Description

(No Model.) 3 Sheets-Sheet 1.

J.- P. GUILD. PLQAT. 10.461,383. F511. Patented omg; 1,891.

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J. F. GUILD. FLOAT 110.461,383. Patented Oct. 13,1891.

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3 sheetssheet 3. J. P. GUILD. FLOAT.

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Patented Oct. 13, 1891.

V 'fiNIT'nD STATES PATENT OFFICE.

JAMES F. GUILD, OFDUNDEE, COUNTY OF FORFAR, SCOTLAND.

FLOAT.

SPECIFICATION forming part of Letters Patent No. 461,383, dated October 13, 1891, Application filed February 24, 1891. Serial No. 382|471. (No model.)

.To all whoml it may concern,.-

'Be it known'that I, .I AMES FINDLAY GUILD,

M. I. N. A., consulting engineer and Steamship' surveyor, a `subject of the `Queen of Great Britain, residing at 1S Dock Street, Dundee, in the county of Forfar, Scotland, have invented new and useful Improvements in Floats, of which the following is a specification.

The object of this invention is to drain off water and moisture condensed from steam during its expansion in cylinders, valvechests, &c., and to return the same to the boiler at a high temperature, so that the efficiency of the engine or engines may be increased by the removal of water and moisture from the steam before o1' during expansion in the cylinder, rive., and also that a considerable quantity of water may be returned to the boiler direct at ahigh temperature, instead of passing the same through the condenser in the ordinary manner.

The invention is only applicable to engines Where the steam is worked expansively.

During the expansion of the steamin each of the cylinders there is arapid condensation, and it is to carry away the water so produced and to render the steam comparatively dry when it commences its Work in the next cylinder that my invention is produced.

To carry my invention into practical effect, I connect the valve-casing of each cylinder to a steam-trap or water-extractor by means of suitable pipes or tubes, the steam-trap being placed beneath or at a lower level than the cylinder-valve casing, so that any Water or moisture which may be condensed from the steam will flow' by gravitation into the steamtrap. After the steam has been expanded in the iirst cylinder the water produced by the condensation I drain off at the valve-chest of the second cylinder, so that the steam is comparatively dry to commence its work in that cylinder, and so on with the succeeding cylinders. By this means I remove the condensation from the steam at the various stages of expansion, leaving the steam comparatively dry at the commencement of its Work in each Cylinder.

In Figure l of the accompanying drawings I have shown a sectional 'elevation of one form of steam-trap or water-extractor, and in Figs. 2 to 6 the details ofits construction.. Fig. 7 shows a modiiied form of steam-trap.

The Water-extractor I prefer to use automatically discharges the extracted Water by means of afloat Valve. A The iioat is made with an outer shell A, of an ellipsoidal shape, from sheet metal and corrugated, so as to give additional strength. Y Fig. t shows a section, and Fig. 5 a plan, of this 'iioat Passing through the minor axis of the ellipsoid, I place a tube or socket B, and onto this I affix one or more thin iron cylinders C, which act as stays to the shell A.

D D are the corrugations on the shell, and Eis a strengthening-band passing round the center of the shell and secured by screws, bolts, or other equivalent fastenings F, at the end or ends of the major axis ofthe ellipsoid.

Fig. 6 shows a section of the corrugated metal from Which theh shell is made. The tube or socket B is placed on a central vertical stem G, over which it is free to slide vertically by flotation.

Figs. 2 and 3 show detached views of the socketB and stem G, respectively. The stem G is partly tubular, and is providedwith an `aperture or apertures H, through which the collected water may pass into the tubular portion of the stem G, and from thence passes to an outlet J in the cover of the steam-trap or Water-extractor, fitted with a non-return valve J2, through Which it is discharged into a tube leading direct to the boiler 0r to the hot well, engine-feed pump, or into a. special pump or injector. The apertures II are formed with a projection K all round to form a valve-face, and the sliding tube or socket B is ground or otherwise truly fitted to the said valve-face K, so as to form the valve which regulates the flow of water by opening and closing the passagev or passages H when the float rises and falls, respectively.

The inlet L and outlet J are cast or rigidly affixed to the top and bottom covers, respectively, of the -steam-trap or water-extractor, which said covers may be set their resp e'ctive planes to suit arrangements.

4In the modification shown in Fig. 7 the sliding tube or socket B forms part of the float, and. is attached by means of a pin and slot at any angle in various general IOO M, or their equivalents, to a bell-crank lever N, whose other end O is pivoted to a connecting-rod P, to the other extremity of which the valve K2 is pivoted. Q is a xed bracket carrying the bell-crank lever, and K3 is the valve-face. As the float rises the Vvalve K-is moved horizontally over the face, so as allow the collected Water to pass into the outlet J. As the oat falls the valve is brought back over the valve-face again into the normal position shown in Fig. 7.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare vthat what I claim is vl. A float having a central stem or tube passing through its center, one 'or more cylindrical stays, a circumferential strengthening-ring formed upon the interior of said oat, and a valve adapted to be automatically opened and closed by the movement of said ioat, substantially as described.

2. A corrugated loat having` a centrabtube or stem passing through its center, one or more cylindrical stays, Strengthening-ring formed upon the interior a circumferential.

of said float, and a valve adapted to be automatically opened and closed by the movement of said float, substantially as hereinbefore set forth.

3. A ioat having a central tube or socket to slide vertically on a central stem in the steam-trap and provided with one or more cylindrical stays extending vertically from top to bottom of the fioat and With a circumfferential strengthening-ring, substantially as described.

' J. F. Gunn.

Witnesses:

Trio. BROWN, ADAM BOWMAN, Both of No. ll-,Rcform Street,D1mdee, Scotland, Sche/tofs Cleo-ks.