US592062A

US592062A - Continuous boiler-feeder

Info

Publication number: US592062A
Authority: US
Publication date: 1897-10-19
Anticipated expiration: 1914-10-19

Description

(No Model.) 2 Sheets-Sheet 1.

A. T. MAGGOY. CONTINUOUS BOILER FEEDER. I

Patented Oct. 9

mz "cams Pm'zas c0. PHOTO-LITHO WASHINGYON. u, c

(No Model.) 2 sheetssheet 2 I A. T. MAOCOY.

Q CONTINUOUS BoILEE EEEEEE.

No. 592,062. Patented Oct. 19, 1897.

' 'NlTiED STATES PATENT FFTCEZQ CONTINUOUS BOILER-FEEDER.

SPECIFICATION forming part of Letters Patent No. 592,062, dated October 19, 1897. Application filed February 18, 1897. Serial No. 624,017- Nom del-l T all whom it may concern-.-

Be it known that-I, ANDREW TURNBULL MAOCOY, of Boston, in the county of Suffolk and State of Massachusetts,have invented a new and useful Continuous Boiler-Feeder, of

which the following is a specification, refer ence being had to the accompanying drawings, in which- Figure 1 is a top plan view of my new boiler feeder, intermediate portions of the watercases being broken out, as indicated by waved lines. Fig. 2 is a side elevation of what is shown in Fig. 1; and Fig. 3 is a central sectional elevation on line 33 of Fig. 1 and at line 3 3 of Fig. 2, viewed from the geared side of the apparatus. Fig. 4 is an enlarged sectional detail of the valve which controls the passage between the piston-cylinders and of adjacent parts. Fig. 5 is a central sectional view showing a modification wherein the valve-controllers are in the form of floats instead of in the form of tanks. 7

The object of my invention is to produce an improved, continuously-operating boilerfeeder; and my invention consists in'the combination of water-cases and independent piston-cylindersv and pistons which operate a Valve controlling alternately the steam-inlet to each water-case,- with valve-controllers mounted within said water-cases and automatically operating a valvefwhich controls conduits alternately open from 'a piston-cylinderto the boiler feed-conduit, the watercases being providedwith water-inlets, and also with water-outlets communicating with the boiler feed-conduit, by means of which the boiler is continuously fed by gravitation from either one or the other of the water-cases.

In the drawings illustrating the principle of my invention and the best mode now known to me of embodying that principle, A and B are independent piston-cylinders, and O and D are independent water-cases: G is an 0s cillating valve controlling a conduit between piston-cylinder A and boiler feed-conduit g, and also between piston-cylinder B and said conduit gi 1 H is an oscillating valve in the form of a lateral extension from walking-beam p, one

lating valve H is mounted in the path of steam-inlet conduit K, this steam-inlet conduit K communicating with the steam-conduit S, which opens into the upper portion of water-case D. Steam-inlet conduit K is also in 7 communication with steam conduit U, which opens into the upper part of water-case C. Valve H is provided with a steam-passage R, which permits communication of conduit K and conduit Swhen it is in line therewith'. The valve H is also provided with an independent steam-passage T, whereby the conduit K and the conduit U are put into communication when the passage T is in line with the conduits K and U. Conduits S and U are also adapted to communicate alternately with exhaust-conduit X, discharging through the exhaust-port W. When the valve H is in the position shown in Fig. 3, steam-passage R and the steam-inlet conduit K are in communicaposition to bring steam-passage T between. conduits K and U, steam-passage R connects the steam-conduit S with the exhaust-conduit X, as will be readily understood from thedrawings. v

The valve H is preferably in the form of a truncated cone and the steam-passages R and T are separated one from the other by a solid central portion of the valve. The oscillatingvalve G is also preferably in the form of a truncated cone and is formed with waterpassages and j. When the parts are in the position shown in Figs. 3 and 4, the conduitsection it connects piston-cylinder A with the water-passage j in valve G, the passage j then communicating with the conduit g. p The solid-metal part of valve G then prevents communication between conduit-section h and the conduit-section 2', leading to pistoncylinder B. These conduits or conduit-sections h and 2' never communicate one with the other, but each leads from a piston-cylinder to the valve G and the conduit 9 and exhaust V. When the valve is oscillated its full stroke, the water-passage y' is carried out of line with conduit-section 7L and conduit g and the passage j is brought into line with conduit-section i and the conduit g. This conduit g leads into the boiler feed-pipe l The upper portion of the boiler feed-pipe N is formed with an enlargement N, which is provided with an interiorly-opening checkvalve 0, controlling communication between the boiler feed-pipe N and the water-outlet conduit L, which opens into water-case D. The enlargement N is also provided with another interiorly -opening check-valve n, which controls communication between boiler feed-pipe N and the water-outlet conduit M, opening into water-case O.

The water-supply pipe 0 is provided with two branches P and Q, branch 1 opening into water-case D and provided with a valve casing m, containing a check-valve m, opening toward the water-case D. The branch Q is provided with a valve-casing Z, which contains a check-valve I, that opens toward the watercase 0.

Tank E already referred to is carried by a rocker-arm a, being loosely jointed thereto near its outer end at a. At its other or butt end it is splined or otherwise secured to a shaft (1 journaled in a stuffing-box a (shown in Fig. 1,) mounted in the side wall of watercase (J. This shaft a is provided with a gear 0, fastened rigidly 011 said shaft. The tank F is similar to the tank E and is similarly attached to the outer portion of a rocker-arm I), mounted on its shaft a mounted in its stuffing-box a and provided with a fixed gear (Z similar in all respects to the gear 0. The gears a (Z on these rocker-shafts a a mesh witha gear 6, fixed on the journal e, mounted in a suitable support 0 (shown in Fig. 2) from the side of the apparatus. This gear e in turn meshes with a segment-gear f, which is fixed on the stem f of oscillating valve G.

Referring now to the operation of my new boiler-feeder: Supposing the apparatus to be free from water and steam and that the tanks E and F are in the positions shown in Fig. 3, steam and water may be simultaneously or separately admitted. Supposing the steam to be first admitted (conduit 9 being filled to valve G through boiler feed-pipe N with water from the boiler and under the pressure therein) it will flow in through conduit K, steam-passage R, and steam-conduit S into case D and will close valve m, so that water cannot flow into water-case D. lVater being turned on it will then flow, from a source of supply, through pipe 0, past valve Z, through water-inlet Q, into case C. It is to be noted that the tanks E and F are filled with water at the outset in any appropriate manner and are always kept so filled by the condensation of steam or the inflow of waterin the cases 0 and D. \Vhen water flows into water-case O,it approximately neutralizes the weight of the tank E, which is balanced by the filled tank F. Consequently the weight of the tank F will cause it to descend in case D, and as it descends the force of gravitation is transferred through the gears (l, e, and c to lift the tank E toward the upper part of water-case O-that is, to about the waterlevel of tank Cas water flows in through conduit Q and rises in tank 0. This movement of the gears causes segment-gear fto oscillate valve G and bring watenpassage j into line with water-conduit section 1' and conduit g, thereby carrying passage into communication with conduit-section h and exhaust-passage V. At this time water from the boiler, at boiler-pressure, being in conduit N and conduit g, flows through the water-passagej in valve G, entering conduitsection t' and flowing under the piston Y in piston-cylinder B. The piston Y is'thereby moved upwardly and the valve 11 is thereby rocked to bring the steam-passage T into line with the steam-inlet pipe K and the steameonduit U, which discharges into the upper portion of the water-case C. By this time case C has become filled with water, and steam-pressure on its surface causes valve Z to be seated. The last-mentioned movement of the valve II brings the passage R into communication with the steam-conduit S and the exhaust-conduit X, the piston Z being moved toward the bottom of the piston-cylinder A.

As above stated, the water-case D has received the boiler-steam, and the steam is now exhausted through conduit S, steam-passage R, and exhaust-conduit X and exhaust \V. The exhaustion of the steam in water-case D permits water to flow past check-valve m into the water-case D, and at the same time the water begins to flow by gravitation (the apparatus being placed above the water-line of the boiler) past check-valve a and through the boiler feed-pipe N. This brings the parts into the position shown in Fig. 3, wherein piston-cylinder A is shown filled with water and the water-case D filled with water to its level, water being shown in the enlargement N, conduit M, and to the low-water level of the case 0. Without interruption, as tank F reaches its uppermost position, the mechanically regulated water passage 7' is brought by the rotation of the valve G into communication with piston-cylinder A and conduit g. At the same time the passage 76 is brought into communication between piston-cylinder B and the water-exhaust port V. At this time the water-case C is connected with the steam-exhaust port W through the steam-conduit U, steam-passage T, and conduit X. In this position steam-pressure is taken off the valve Z and water flows into water-case O, and the steam-pressure on the any improper movement, accidental or otherwise, of the pistons and valve I-I during the operation of the apparatus. Were steam used, it would condense after valve G was shut off and valve H might be moved, accidentally or otherwise; but the presence of a the pistons and insures a gradual flow of steam to the water-cases by reason of the gradual opening of valve H. The tanks E and F are valve; controllers in effect and simultaneously move in opposite directions.

In the modification shown in Fig. 5 hollow water and steam conduit floats 1 and 2 are substituted for the tanks E and F. The result obtained by the use of floats as distinguished from balancing-tanks is the same,

although the tanks have a tendency to fall,

whereas the floats have a tendency to rise; but this difference of tendency is wholly immaterial and floats may be substituted for the tanks, although the tanks are preferable because they are subject to equal pressure inside and out, as will be readily understood by all skilled in the art, whereas floats would be liable to become crushed or destroyed by the steam-pressure and for other causes.

The inner ends of conduits Q, M, L, and P preferably project well above the bottom of water-cases O and D,so as to prevent, in a large measure, sediment at the bottom of the tank getting into the pipes or passing to the boiler.

What I claim is- 1. In a boiler-feeder, the combination with the water-cases of a movable valve-controller within each Water-case a pair of pistons and piston-cylinders; conduits from the pistoncylinders;- a valve which has a plurality of passages and is so mounted as to control said conduits; mechanism which connects the valve-controllers together and with said valve; and a boiler-conduit extending from said valve; steam and water connections of the cases with the boiler and a valve operated by the pistons.

2. In a boiler-feeder, the combination of.

anism which connects the pistons together and with said valve; water connections from the cases to the boiler; and the valve controlling the pressure to the pistons operated by connected valve-controllers in the watercases.

3. The new and useful continuously feed ing boiler-feeder herein described, said feeder comprising, in combination, a plurality of water-cases each having near the bottom a water-inlet and water-outlet; a valve-controller movable within each water-case; a plurality of piston-cylinders conduits therefor near the inner end of the cylinders'g'a water-exhaust port a'conduit'which connects the upper portion of the water-cases and has a steam-inlet port and a steam-exhaust port;

a conduit leading boilerward from the conduits from the piston-cylinders; a valve having a plurality of passages and so mounted that it controls the conduits from the pistoncylinders and the water-exhaust port thereof and the conduit leading boilerward therefrom; mechanism which connects said valvecontrollers together and with the valve for the piston-cylinder conduits; pistons in said piston-cylinders; a valve having a plurality of passages and so mounted that it controls not only the conduit connecting the watercases but also the steam inlet and exhaust I ports thereof; and mechanism which connects the pistons together and with the valve for the water-case-connecting conduit. I

4. In a boiler-feeder, the combination of water-cases; a movable valve-controller in each case; a piston-conduit; an oscillating valve therefor; a rocker-arm for each valvecontroller; a gear near the buttof each rockerarm; an intermediate gear meshing with said gears on the rocker-arm; an oscillating valve for said piston-conduit; and a gear fast to the oscillating valve and meshing with said intermediate gear; steam and water connections of the cases with the boiler and the valve operated by the pistons for controlling the passage of steam.

5. In a boiler-feeder, the combination of a pair of water-cases a conduit connecting the same; an oscillating valve in said conduit; a pair of pistons and piston-cylinders; a walking-beam fast to said oscillating valve and connected by each arm with the pistons; a piston-00nd uit; an oscillating valve therefor; valve-controllers in the water-cases; means for connecting said oscillating valve in the piston-conduit with the valve-controllers, and steam and water connections of the cases with the boiler and a source of supply.

6. In a boiler-feeder, the combination of a conical oscillating valve having a plurality of openings; automatically-operated valvecontrollers connected together and with said valve; a supply-pipe with which one of said openings communicates to allow water to operate one piston and to allow water in the other cylinder to flow to the exhaust; a pair of pistons and piston-cylinders; a pair of Water-cases; a conduit connecting the cases; a valve in said conduit connected to and operated by the pistons; and steam and water connections from the cases to the boiler.

7. In a boiler-feeder, the combination of a pair of water-cases and a pair of piston-cylinders and pistons therefor; conduits from the piston-cylinders; a valve thereinbetween that alternately communicates With one or the other of said conduits for the piston-cylinders; a conduit from said valve-controlled conduits and in alternate communication through said valve with one or the other of said piston-cylinder conduits; a boiler feedeonduit in communication with the conduit from the piston-cylinder conduits, and Waterescape conduits from the water-cases to the boiler feed-00nd uit steam connections to the cases and the valve operated by the pistons.

In testimony whereof I have signed my name to this specification, in the presence of 15 two subscribing witnesses, on this 16th day of February, A. D. 1897.

ANDREW TURNBULL MACCOY.

\Vitnesses:

EDWARD S. BEACH, FRANCIS -J. V. DAKIN.