US49941A - Rmprovejvtent in feed-water apparatus - Google Patents

Description

Gr. WASHBURN.

FEED WATER APPARATUS.

PATEN'JED SEPT. 12, 11865.

UNITED STATES PATENT Grimes.

GEO. I. WASHBURN, 0F WORCESTER, MSSCHSETTS.

IMPROVEMENT IN FEED-WATER AFPA RTUS.

i `Specification forming part of Letters Patent No. 49,94 I dated September i2, 18155.

To all lwhom it may concern;

Beit known that 1, GEORGEAI. WASHB'URN,

of the city and county of Worcester, and State of Massachusetts, have invented n new'and useful Improvement in" Condensers and,Feed-' Water Pumps; v and I hereby declaro the following to be 'a full and exact description of the on the4 line w c, Fig. 2. Eig. et is a vertical' Vsection on the line .c c', Fig. 1, showing thevalve in elevation. Fig. 5 is s horizontal sectionen. .tlm line y y, Fig. A1,1slmwing .the valves in plan. Fig. 6, is a face View of the conical valve.' Figi.V 7 is a longitudinal section of the conical "alve on the line x w in Fig. 6.-' Fig. 8 is a longitudinal section of the conical valve on the line y y, Fig. 6. Fig. 9 is a face view ofthe conical valve-sect. Fig; 10 is a sectionof theyslve-seat.

1 Similar letters of reference indicate corre I spending parts in the' several figures.

Tbeinvention consists of a. steam-pump and condenser, and is shown as a feed water apparatus loccteda'bovethe boiler water-level, and acting by the condensation of steam in the chamber which has beenfpartially emptied of' water to raise water through the supply-pipe, and then, by closing the said supply-orilice and opening the passages leading to tl1'e\boiler, to supply the latterwith feed-water by means of its greater elevation above the water in the boiler.

To enable others skilled in the art to which myinvention relates to understand and use the same, I will proceed to describe its construction and operation. Y

It will be perceived by examination of the drawings that the devices are duplicated near- 'ly all thro ugh ,and that the sides act alternately to produce an approximately continuons effect, as in my former patent of. January 2G, 1864, on which this is an improvement.

A A' are two water-chambers, connecting by passages B Bl with two valve-chambers, C C.

\ The latter chambers, connect by valves D with the water-supply in a well or otherwise, and

byvalves E and pipes F with the boiler, for

that section of' this specificaties erecting cf the operation. The speci-ng from the pipe J into the chamber is always between the disls E .ntndfEMr and that ci tiresome-cham ber is always full ci stesse :ind in direct and unobstructed communication with the boiler. Pipes K K' start from the walscchsmber from points always between the disks H H and disks H" H", respectirei-y, and. scid. pipes, all ter passing through scid-water chambers L in `a'coil, enter and terminate in the nalveciismbers C O' respectively. 'li'he ecct of this ma rangement of spaces between the disks ci' the 'piston-valve and the cpenin'gs E K and these leading tc the ccndenserpipc is that each chamberA A is inconnection' with the bollen steam or its appropriate condenser at sil times,

and as soon as the communicttion withcne is closed it is opened to theetlrer, and these een nections are alternate, unless vit is desired tc use the steam expansively, in which case there is c small interval between the closing of `the induction-passage K and the opening of .the communication to the condenser.

M is s rotating valve, having a, wheel, N,

'upon its stem, the wheel being prcvided'with.

four teeth, 0 0 0 0, two on escl. side. Pls-.ies E I connect the disks E and E", so ss to moire the motion ci' all the disks simultaneous, the four rigidly-connected disirs forming one piston-valve. Y

ltwill be observed that the plates?l?Il have shoulders upon them which project so ier intothe chamber es to strilre :cg-ainsi; the teeth D, and by each motion ct the reciprocating naive to communicate oncfcsrth ol e. revolution to therctcting veine, which completes itsreycv lation by twoimpnlses es .ch wey, derived from f the plates P P of' the piston-veine. The shout der'bf each plate Pactsnpon its respective two teeth 0 which project othat side ofthe wheel N. The valvaM has four orifices in it which communicate bypipes Q Q' with the ends of the chamber G beyond and outside of the end disks, H BJ, of the reciprocating valve. The orifices of the ports E It in the rotary valve are constantly open toj the live steam in the central part o'f the chamber-G, and by the in termitteut action of the valve the said steam is admitted alternately to the ends of the vaivechamher G ,against the onterfaces of the disks H BJ respectively and alternately,l while thel other end of the said chamber G is at the same time thrown open by the pipe Q, communicating with it to the critica S in the rotary valve and by the axial opening T with the outerair,

allowing itscontents to be dischargedand re'- moving any impediment arising from the pres# ence of air or steam tothe free motion of the piston-valve. f

V is'aiiy'wheel on the end of the rotary-valve stem, and is intended to prolong the motion of the said valve alter its sudden impulse, de-

rived from .the pressure of the steam on the.

end disks of the piston-valve and communicated through the shoulders ofthe plate P or P' to the piu ou the wheel N. This continued mo- .tiou cai-ries the rotating' valve past the space between its ports,and the leaping motion of the piston-val've near the end of its stroke is due f ,to the pointed shape of the steam ports in the rotating valve. The rotating valve, having'arriv'ed at the vother port, admits the stearato` the other sind of the chamberG, and the steam causes the return motion of .the piston-valve operating on the wheel of the rotating lvalve by the other plate I or P', as before described.

The circumstances that tend to -carry the 'rotating valve over the 'space betweenits ports lare the momentum of the piston-:valve and that of the va-l've itself, aided by the ily-'wheel V.` A spring may be so arranged as to bo com# pressed by the direct steam-pressure-and re.

coilduring that part of the mot-ion of the valve when it is moving between the ports. v

'U U are pipes which lead from' the valvechamber C or C'. on one'side' of the apparatus at Wto the water-chamber A'or A( on the'opposite side to that from which it started. These pipes take cold water from the valve-chambers and inject it in a comminuted stream throughasprnklenY, into the upper part of the chamher A or A" for the purposeof'condensingthe steam. The openings of said pipes U into the said chamber A or Al are guarded by valves to prevent reflux of water or 'steam into the The valve-guarded opening 'IY is to let in a small amount of air-.when desired to transmit it to the boiler. a ings to the chambers AA'. y

The arrangement of the pipes U U may be used simultaneously with K K, or as an ,alter native under change of conditions, renderingone or theother more suitableand eiicient.

a a are no'nconductinglinabove the boiler, the water will now commence I to'pass by way of the pipe E to the boilerwith aforos proportioned to'iits height above the boiler and until thewater has been lowered to the desired'e'xtent', when the piston-valve is i by the pressure of the steam moved so as' to ycover vthe port' K and cut off the chamber from the direct'action ofthe boiler-steamand open acommunioation by meansofthe pipe K with the valve A chamber C, permittingv the steam .whichhas displaced `the water in Ato pass upward into the pipejK, and allowing the wa- 'ter inv the chamberG to fall luntil it stands at anieven height with that in chamber' A, driving the steam and whatever air may be therein from the latter, which follows the tortuo'us Awindings of the pipe K, and the steam becomes condensed, leaving a -vacuum more or less per-v feet in the' upper part of chamber-O, which is lil-led' by the rising of the check-valve D and the entrance of water from the supply-pipe D' vunder atmospheric pressure. The chamber be,-

.ingnow again filled with water, the pistolA valve'is shifted so as again to admit the pressure'ot' boiler-steam through .the portK uponv vthe water in the chamber, when it is 'again emp- '.tied-ot a part of itswater, andthe operation abovel descrihedis repeated. l

The entrance ofthe boiler-steam at the end of Athevalvech'an'lber G is effected by means of the-point or smaller' partof the lsteam-'port fR or B', which is in connection with the end' ,of pipe Q or Q', and'causes the pistonLvalve to begin-to move away from thesaid'end'of val ve-y chamber G,and as this motion proceeds the plate l?. comes .in contact with the p'in- O on; wheel N andcauses the Yvalve M to rotate so as to bring the larger part of port R over the end of pipe Q or Q', thus giving more steam to the said end of the valve-chamber G, which accelerates the motion of the valve-pistonand acts directly upon it until the port 1t has passed from'overv the end of said pipe, when the remaining part 'ofthestroke of each valve is'mad'e bytheir previously'- accumulated momentum, thel mo mentum ofthe rotating valve bein g the greater fromthe weight of the ily-wheel V.

In the course of the above-described motion the chamber A or A", as the case may be, was shut oli from thesteam and opened'to the pipe vK and the valve M rotated one-'quarter of a .complete revolution, which opens that end of the valve-chamber G from which ,the valve-pis 'Ls expone/ai at each stroke m 1s-ivan gward Ward, in the @5mm-baar at the water-line f the boiler, substantitaly as descr'ned, heboer or in a, chambm' attached, to @he i9. ha conuecbQu withpumps which draw boier, substantially as, described. and reprethei war by the vacuum caused by da cansented. densatoa o 4astesmm and expel it bythe direct l amica of steam., th@ method described'of regul- Witnesses Iaiug th@ au'ppy of steam to the apparatus by A WM. T. EARLOW, -pacinghe Steam-pipemith its openen@ down i T. L. NELSQN.

GE@ WASHBUBN.

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