US569966A - Steam-fire-engine pump - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

0. H. Fox; v STEAM FIRE ENGINE PUMP. No. 569,966, Patented 00a zo, 1896'.

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` V CLHi STEAM FIRE ENGINE PUMP.

N6, 669,966. Patented 066..'20, 1696.

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nati, in thecounty of Hamilton and State of 'pumps to be placed much closer f UNITED STATES, .PATENT Orricnl :CHARLES n. Fox, on 'cIN-oNNATI, onto, ASSIGNOR To 'run AMERICAN Finn ENGINE coMPANy, or SENECA FALLS, New' Yoan.

- *sTEAM-Fmia-ENGINE PUMP.

lSPEGIFIGATIIION forming part of Letters Patent'No. 569,966, dated October 2v0, 1896.

pplicationleddune 22,1894. BerialNm515A04. (Nomodel.)

barrels and are so adapted to prevent conflicting currents. The air-cushion branch in connection withl the discharge-chamber is extra long, which materially aids in `the steadiness of the pumps action.

My invention will be first fully described with reference to the accom pan vin g drawings, and afterward more particularly pointedout in the lannexed claim. l' Figure 1 is a sectional elevation of my 4improved double-acting lire-engine pump. Fio". l is a front elevation of the saine, parts being broken `away and parts being shown in section. Fig. 3 is a detail plan View of a guumetal casting embracing the common suction chamber or reservoir, the pump-lmrrells, and the reciprocal suction and force chambers, part being broken away and some oi .the valves being removed from their seats. Fig. 4 is an enlarged longitudinal seetional'view of the same. Fig. View oi' the same. Fig. 6 is an enlarged perspective viewot'thc detachable pump-barrel lining.

1 1 are ordinary steam-cylinders, in which operate pistons 2, mounted upon the pistonrods I3. l is the slide-Valve for controlling the admission of steam to the cylinder, and 5 are reciprocating yohcs Vconnecting the piston-rods 3 and 32, and spaced to provide the necessary room foi-'the rotation of the iiy- \\'heelcrauks and boxed ends of the connecting-rods 24, which latter extend on each side of the lower yoke-piece 5 and piston-rod 22, as shown in Fig. 2. G are the ily-wheel cranks,

Bc itknown that l, CH-AltIQES H. FOX, a citizen of the'United. States,` residing at Cincin- Ohio, haveinvented certain new and useful Improvements in Steam-Fire-Engine Pumps; and I do lhereby declare that the following specification, taken in connection with the accompanying drawings, is apfull, clear, and exact descriptionof my improvements, such as will enable Athose skilled in .the art to make and use the same. l My invention relates to improvements in fire-engine pumps of the double-acting type, the object aimed atbein g to combine both the practical'and theoretical requirements essential to a simple; reliable, and efficient tire-engine pump, 'and particularly with regard to combined eiciency and facility for examinationand repair. 1

The pumps-aren'nited in a gun-metal 'casting'which forms a single body, embracing the suction chamber or reservoir, thev suctionmouths, and reciprocal suction and i'oree chambers of both pumps, and permits the as to 'centers than could otherwise be done. Uniting the' two pumps in asingle structure also obviates the usual weakness in construction attending a connectionr between separate pumps for the reason that the combinedfforrn furnishes a rigid basis for the entire structure, sinipliii'es the driving mechanism, and enablesit to endure extraordinary strainsv without vibration. Removable caps and other parts are provided for rendering the working partsof the pumps interior 'mechanism readily accessiblev for cleaning or'reliewing, and the pri|nc,im1. ortance oi' perfect Waterways has been provided l'or by greatly increasing the valve area, dimin ishing the lift of the valve, and arranging the valves i'n clusters around the open ends oi' the pump-barrels. 'lhe suction may be connectedv tol eitheriendmf the pump, the cominon suction chamber or reservoir serving to uniformly distribute thc water to the suctionvalves, which are preferably `of the conical \Vilcox type. "The discharge valves are placed in a separate chamber which communicates with thel reciprocal suction andiorce chambers ai the opposite ends of the pnmpl inIgs of the connecting-rods 2.1, 7 is the fly- 'heel. S are tite eccentric-valve movenmnts for actu ati n g the steam-,valves 4. These pa ris are of ordinary constr ietion'.

10 is the gun-metal casting, resembling a box-girder forming a single body which embraces the connnon suction chamber orrcservoir li, extending from end to end and serving as a common reservoir to the doubleacting pump, the open-ended pump- barrels 12 and 12, which are located cent-rally in th(` main suction chamber or reservoir adjacent to the opposite ends, and the reciprocal suction and t'crce chambers 13, 13, 115, and 13?, which extend ai right angles across the open 5 is a transverse sectionaljonrnaled in the engine-f rame and'to the boxcated in the passages which communicate be-v scopes ends of the pump-barrel 1;', while the chamis bers lli and i3C arrI in communication with the opposite ends ol' the pump-barrel li". l

ll and l5 are the suctionmouths at the opposite ends ofthe casting, communieating withthe main reservoir, and which are adaptcd to be connected with an)Y suitable water suppl)v and, as the casting extends transverschY across` the engine, al'l'ord convenient means ot' connecting the pump up to Ythe water supply from the nearest side.

yiti are the metal gratos or Valvc-scats, lo-

tween the reservoir l1 and the reciprocal suc-- tion and force chambers lil, 13, 13, and 13.

i7 are the conical rWilcox suction-valves provided with the spiral slp-ings 1S for holding` them to their seats.

l!) are the removable pump-barrel linings, which are formed with the perforated flanged heads 19, adapted to receive and be secured in place by the screw-bolts 20.

llach of the pump-pistons "2l is constructed of an upper cup-shaped section fitted to the piston-r n 22 and formed with a projecting boss, over which tits a packing-disk 23, consisting, preferably, of canvas, graphite,land oil pressed and cut into the form of a disk, and a lower cup-shaped `section fitted te the end of the piston-rod 22 and confining the packing'. The piston-rods 2; are attached to the loweryoke-scctions 5 and to the cranks (i `through the connecting-rods 2st. Y

25 are racuuni-chambers communicating with the suction chamber or reservoir ll.

2o' is the discharge-chamber ha rfing the outlet-nozzle '.'T and communicating with the reciprocal suction and force chamber-S13, 13, lll", and lil" through the ralred passages 2S. 'lhe Valves il), controllingthe passages 38, are preferably ol' the form covered by patent of Ahrens, dated .iannarur1 22, i854, No. 292,296;

:3U is the .air chamber, communicating through the pipe 3l with the force-chamber 2o, said `elnnnber being made'cxtra long I or renderingl the pu1np`s action more steady.

The passages :"8 are located adjacent to the upper walls of the lcciprocal suction and force chambers, and .-,l he outlebnozzle :27 is at a higher eleyation than said passages in order that the air-bubbles will not be trapped, but will be allowed lo pass upward and onward tothe nozzleand be discharged lromthe pump.

lfump-head'd and 3U, the casting embracing the discharge-ehamber 2H and air-vessel bran eh 3l, and the cap-plate 37 are rmnovably secured in place for facilitating the exposure el' the pnmps interior mechanism l'or cleaning or repairing,

The operation will be clear from the drawings. I n the drawings the left-hand piston is represented in the middle of its downward stroke, while the right-hand piston is reprcsented at the point ot' completing its upward stroke. r1`hc wat-er is taken into the suction chamber or reservoir 'll from any suitable supply and drawn through the suetionwalves 't 17 into the independent reciprocal suction and force chambers 13, 115", 123, and 13. 'lhc Valves 'l7 operate indepelnlently to allow the 'entry o1' or con [inc the water in the independent chambers 13, 13, 13b, and 'll". VIn thc p0- sition in which the pump is represented water is being drawn into the chambers 13 and 13" while the water is being forced out of the` chambers 13"* and lil into the common discharge-chamber 2G. From the chamber 2G the water is forced from the outlet-nozzle 27 in the usual manner.

Having thus described myinvention, the following is what'I claim as new therein and desire to secure bylettels Patent:

In a steam lire-engine, the combination `of a rectangular horizoutally-arranged casting formed with an inner suction-chamber upper and lower horizontal partitions and two cha-m,- bers outside of said partitions each divided by a transverse wall into two compartments which operate reciprocally as suction and force chambers, two pump-barrels mounted between the horizontal partitions, extending through but not communicating with the main suction-chamber and opening ea ch into two opposite reciproeally-acting compartments, water-supply inlets communicating with the re speetivc ends ot the main sucton-ehamber, valved openings arranged around the respec tive ends of the pump-barrclsand forming a communication between the lnain chamber and the reciprocally-aeting compartments, upper and lower cap-plates closing said compartments, a suitable discharge-chamber, an independent `valvcd passage leading from cach of the reciprocally-acting compartments to the discharge-chamber, and an engine of substantially the` character described controlling pump-pistons working in .the respectire barrels, as explained.'

v CHARLES III. FOX. \\'itness z l p s A. e. vla'rnnn,

.1, O. Woomrann.

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