US272689A

US272689A - John w

Info

Publication number: US272689A
Authority: US
Publication date: 1883-02-20
Anticipated expiration: 1900-02-20

Description

(no Model.)

J. W. HEYLMUN.

FEED WATER HEATER. No. 272,689. Patented Feb. 20, 1883'.

' Jame N. PETERS. PhotvL'nhognpher, Wuhinflon. 0. C.

UNITED STATES JOHN W. HEYLMUN, OF BUFFALO, NEW YORK, ASSIGNOR TO HALL, OF SAME PLACE.

PATENT OFFICE.

EDWARD J.

FEED-WATER H EATER.

SPECIFICATION forming part of Letters Patent No. 272,689, dated February 20, 1883. Application filed November 11, 1882. (NomodeL) T 0 all whom it may concern:

Be it kno n that 1, JOHN W. HEYLMUN, of the city of Bufi'alo, in the county of Erie and State of New York, have invented new and useful Improvements in Feed-Water Heaters, of which the following is a specification.

This invention relates to an improvement in that class of feed-water heaters which consists of a feed-water-discharge pipe terminating in the steam-space of the boiler, and provided at its lower end with a valve which opens under the pressure of the feed-pump or injector and permits the feed-water to issue into the steam space of the boiler in a spray, and which closes when the impulse of the feed-pump orinjector ceases and prevents the steam from entering the feed-pipe.

The object of my invention is to so consu uct thefeed device that the resistance which the valve opposes to the ingoing currents of feed-water can be readily regulated, and to construct the device in such manner that it can be more easily applied to the boiler than heretofore.

My invention consists, to that end, of the peculiar improvements in the construction of the device, which will be hereinafter fully described, and pointed out in the claims.

In the accompanying drawings, Figure l is a vertical section of my improved feed water heater. Fig. 2 is a sectional elevation at right angles to Fig. l, the section being taken in line 00 m, Fig. 1. Fig. 3 isa horizontal section in line y y, Fig. 1. Fig. 4 is an enlarged elevation, showing my improved feed-water heater applied to a steam-boiler.

Like letters of reference refer to like parts in the several figures.

A represents the shell of a steam-boiler of any ordinary and well-known construction; B, the body or main chamber of the feed device; and b, the i'eed-water-inlet pipe, which enters the top of the body B in a perpendicular direction.

0 represents the feed-water-discharge pipe, projecting downwardly from the body B, and arranged in the same vertical line with the iiilet-pipe b. so that the feed-water passes through the apparatus in a straight line.

D represents a bushiug'or sleeve, which is inserted in the opening d, formed in the shell of the boiler, and provided on the outer side of the shell with a projecting collar or flange, (1. The outer surface of the bushing D is provided with a screw-thread, e, to which is applied a screw-nut, e, which bears against the inner side of the shell of the boiler, and whereby the bushing is firmly secured in the opening (1. Suitable packing-rings or washers are interposed between the flange d and the boiler and between the nut c and the boiler to form steam-tightjoints.

frepresents a screw-thread, which is formed on the outer surface of the foed-water-discharge pipe 0, and which engagesin an internal screw-thread formed in the bore of the bushing D, so that the apparatus .can be secured to the boiler and removed therefrom by simply inserting or unscrewing the threaded pipe '0 into or from the bushing D. The latter is held by the screw-nut e and firmly secured to the boiler without forming any. rivet-holes in the shell of the boiler around the opening (1, and the strength of the boiler and of-the fastening device is consequently not reduced by such holes.

G represents a conical or other suitable valve, arranged below the lower end of the dischargepipe 0, and adapted to close against a seat formed in the lower end of said pipe.

. It represents the valve-stem, which extends upwardly into the chamber B, and which is guided therein, near its upper end, in a bridgetree, h.

1 represents spiral wings or flanges, secured to the valve-stem it above the valve and bear ing with their outer edges against the inner surface of the discharge-pipe, whereby the valve is both guided in its vertical'movements in opening and closing, and at the same time turned at every stroke, so as to change its seat.-

J represents a collaror projection formed on the valve-stem h in the chamber B below the bridge-tree h.

K represents a lever, which is pivoted within the chamber B, and which bears with its bifurcated short arm It against the under side of the collar J, and projects with its long arm k into the laterally-extending or overhanging portion of the chamber B. The lever K is provided with ahub, l, which is provided with a circular recess on each side. at m are two horizontal screws,which are arranged in threaded holes in the. side walls of the chamber B, and project with their inner cylindrical ends into the circular recesses of the huh I in such manner as to form pivots, on which the lever K turns. The screws m are secured in position, after having been adjusted, by jam-nuts m, which are provided with suitable washers, whereby tight joints are formed around the screws,

Nrepresents a spiral or othersuitable spring, which rests with its lower end upon the long arm is of the lever K. and which bears with its upper end against the lower end of a setscrew, it. The latter works in a threaded opening formed in acap, 0, which is secured in the top of the chamber B, and which closes the opening through which the spring N is introduced.

n represents a jam-nut, which is applied to the set-screw-a, and which bears against the upper side of the cap 0 and secures the setscrew in position, and forms a tight joint at the point where the set-screw passes through the cap.

p represents a projecting stop or nose, which is formed on the inner side of the chamber B at such a distance above the long arm of the lever K that said arm will come in contact with said stop when the valve is fully opened, thereby limiting the opening movement of the valve and preventing undue compression of the spring.

.lhe water entering the chamber B and discharge-pipe 0 through the inlet-pipe I) under the impulse of the pump or injector depresses the valve G and issues into the steam-space of the boiler in a spray through the annular opening between the lower end of the dischargepipe 0 and the valve until the impulse of the feed-pump or injector ceases, when the valve immediately returns to its seat under the combined action of the spring and the steam pressure. As the valve and its stem descend, the short arm of the lever descends also, and the long arm of said lever rises and compresses the spring N until the limit of the movement is reached, when the long arm of the lever comes in contact with the stop 12.

By adjusting the tension of the spring N, by means of the set-screw a, the resistance which the spring opposes to the opening of the valve is regulated in accordance with the pressure which the feed device, whether a pump or injector, exerts upon the ft ed-water.

The adjustment of the tension of the spring does not alter the stroke of the valve, which remains the same in all cases. Upon removingthe cap 0 the spring can be readily removed from the chamber B, and be replaced by a new one, or be repaired in case of injury.

I The entire feed device can be readily removed from the boiler by unscrewing the pipe 0 from the bushing D,as the valve Gris smaller in diameter than the bore of the bushing. The inlet-pipe I), being arranged in a vertical line, permits the application of the device to boilers which are covered with brick-work more conveniently than feed devices in which the inlet-pipe extends in a horizontal direction.

I claim as my invention- 1. The combination, with a feed device having a discharge-pipe, 0, provided with an external screw-thread, f, and a valve, Gr, seated against the inner end of the discharge-pipe,of a bushing, l), screw-threaded on its inner and outer sides, and having a flange, d, and a screw-nut, c, securing the bushing to the boiler, whereby the feed device can be removed and replaced without disturbing the bushing, substantially as set, forth.

2. The combination, with a chamber, B,and

discharge-pipe 0, of a valve, G, seated against the lower end of the discharge-pipe, a valvestem, h, provided with a projection or collar, J, a lever, K, and a spring, N, substantially as set forth.

3. The combinatiomwith a chamber, B, and discharge-pipe c, of a valve, Gr, seated against the lower end of the discharge-pipe, a valvestem, It, provided with a projection or collar,J, a lever, K, a spring, N, and a stop, p, substantially as-set forth.

4.. The combination, with a chamber, 13, and discharge-pipe 0, of a valve, Gr, seated against the lower end of the discharge-pipe, a valvestem, It, provided with a projection or collar, J, a lever, K, a spring, N, and means whereby the tension of the spring can be regulated, substantially as set forth.

5. The combina ion, with the chamber B, provided with a discharge-pipe, c, of the valve Gr, stem it, having projection J, lever K, spring N, and removable cap 0, substantially as set forth.

6. The combination, with the chamber B, provided with a discharge-pipe, 0, of the valve G, stem h, having projection J, lever K,spring N, and set-screw a, substantially as set forth.

7. The combination. with the chamber B, provided with a discharge-pipe, c, of the valve Gr, stem h, having projection J, lever K. spring N, removable cap O,and set-screw a, substantially as set forth.

b. The combination, with a chamber, B, provided with a discharge-pipe, c, of the valve Gr, valve-stem h, provided with projection J, lever K, having recessed huh I, and pivots at, substantially as set forth.

9. The combination, with a chamber, B, of an inlet-pipe, b, and discharge-pipe c,arranged in the same vertical line, valve G, provided with stem I1, lever K. and spring N, arranged in a laterally-projecting portion of the chamber B, substantially as set forth.

JOHN W. HEYLMUJ.

Witnesses:

EDWARD WILHELM, CHAS. F. GEYER.