US892974A - Air-pump. - Google Patents

Description

PATENTED JULY 14, 190s.

Gr.- P. ABORN. l AIR PUMP. APPLIGATION FILED s1:1' T{14,19o7.

HHHI Il errar) s'rnrss GEORGE P. ABORN, or

Param;

Fic

STEAM PUMP woRKs, A CORPORATION OP samenwer.

AIR-PUMP.

Specification -of Letters Patent.

Application filed September 1.4, 1907. Serial No. 392,829.

speciication'and the accompanying drawings, forming a part of thesame.

This invention relates. to an improved pump of that class used for, pumping airor gases on the stroke in one direction, and

- liquid on the stroke in the op' iosite direction,-

the invention being especia y designed for '1 use in wet and dry vacuum pum s, although applicablefor other purposes.- n such Wet and dry vacuum pumps, as used on con# densers, connection ,is made with one part of the condenser for removing the air and i uncondensed vapors, and with the bottom of the condenser for removing' the ldischarge water, and these connections communicate with opposite sides of the pump plunger,v if' a single plunger be used, the air and uncondensed vapors thus being delivered from'one l side of the plunger, and the discharge water from thevopposite side. Y In a pump embodying the present invention, the air inl'et is at the center of the cylinder by a central valveless suction passage, so that the air enters above the plunger when thelatter is 4at thebottom of its stroke, and the water enters by a similar passage Vin the lower part of the cylinder when the plunger is raised, and flows from said passage 'into a smaller cylinder below the air cylinder from which 'the water is delivered on the downstroke of the plunger, the large air plunger having. a smaller extension or water plunger by W ich the water ,is delivered. These pumps are preferably used in pairs with their plungers making' alternate strokes, as by cranks set at 180 apart, by which a higher speed is possible and a greater efficiency secured, but the broader features of the invention may be embodied in a single pump, and may be used with driving mechanism of any type, as, for instance, in crank and ily wheel' pumps, or direct actin r steam driven pumps, andeither single., dup ex or triplex. l

The preferredl embodiment of the invention in a two cylinder crank and fly wheel pump is illustrated in the accom )anying drawingsl fcrming a part of this speci ication,

and this'lconstruction will now be described claims.

of a twin or two cylinder pump embodying all the features of the invention; Fig. 2 is a pumps.

` Referring to the drawings, A, A, are two pumps, shown as operated by the lcrank shaft B having cranks C set at 180o apart, so thatthe plungers are timed to Imove in opposite directions.

.D is the main air inlet, and E the' mainv pipes 10, 11 to the. air and'water inlets d, eof

F at the bottom of each pump 1s shown as .connected by pipe 12 to the air delivery G at the topof the pump, H being an open vapor. pipe extending upward from the top of the pilpe 12, the construction shown being adaptve :for a pum i acting against a low ead, as

hereafter explained.

The air cylinder I, in which moves the large air plunger i, has below-and continuous which moves the water plunger c forming an gers being carried b y the plunger rods 18 actuated from the motor and crank shaft. The air inlet d connects with thecylinder I cen,-

trally through the' suction valveless passage 14 extending about the cylinder and Open when the plunger 'L is-in its lowest iosition, andthewater inlet'e connects with t e space below thejplunger 'L .when the plunger'is raised, through suction valveless ias'sage'l at the bottom of the cylinderjhe water 15`ilows downward into the water cylinder K, when the plun'gers i, k are raised, so that thel lower end of the )lunger k is raised above the top of the cyliniler K, the plunger-then being guided. in the cylinder by the guide wings 1 on the bottom of the plunger. 'Ihe stroke through head de very valves 2 tp t e air'delivery G, a1d\tlie water is delivered from water c linder K and the chamber 16 below it on t e down-strokeof thefjplunver,

a very small and compact` construction, in

Patented July 14, 190e, 'T

extension of the air plunger i, the two plunentering through suction valveless passage eryF.. l

- t will b seen that the mventlon provides BOSTON, MAssAoHUsmfrs. lAssicuon 'roV BLAKE a KNOWLES.-

in detail and the features forming the inven-gtion then specifically pointed out in the In the drawings :--Figure 1A 'is an elevation .i

vertical central section through one of the water inlet, which are connected through the' respective pumps.l The water delivery with it the smaller-water `cylinder K, in

-air Ais delivered from clvlinder, I on the u -f I. 1

through delivery valves 3 to the water de vbeing of :Great advantage in such cas which t". e plunger winch disel'iarg'es the water may he proportioned for handling water only, thus assuring the filling of the wnter cylinder i uil securing a high elileieney, and 'whieh provides for large valve aree. for discharging the water, so that the pump may run at e high speed. The pump is also well adapted for discharging against s eonsidersible head, which is frequently necessary in tln's class ci pumps, the small. water plunger l) y reducing t..e surface against which the heed pressure is exerted. y

it the pump to deliver against eny corr siderable head, it will he understood that the air delivery G will not he connecte-,d to the water delivery F, but that the air and water deliveries will he entirely separate; With low heads, however, the connection of' the two deliveries, as shown, Iis convement.

W ith two umps connected. as shown, and

with their p lingers tin'red for simultaneousA strokes in opposite directions, the down stroke of one plunger i, alter the plungerk has entered t e small cylinder K, acts to push the water from below the plunger i to the other pump cylinder, and thus aids in filling the lower portion the other cylinder. A higher rotative speed is thus possible, and a greater efficiency secured.

While the invention is intended especially lfor wet and dry vacuum pumps of that class in which air and weter are taken from the condenser by separate connections, and the invention is illustrated as thus applied, and certain specific features of the invention are limited to such a construction, a single valve less suction passage may he `l ed through which both the air and grate hier, the nir naturally rising and enteringl shove the air plunger and the water below the air plunger. .ll/lith separate air and water colmections, also,"the admission of water to the cylinder K may' he controlled hy suction valves ol' an suitable form, within the invention, considered broadly.

Other modifications may be made within the invention defined by the claims.

'ldhat i. claim is l. A pump having a cylinder of two diem eters, the upper larger portion forming an nir cylinder and the lower smaller portion a water cylinder, u' )per and lower passages for admitting air an water to the air cylinder, a plunger in the'air cylinder acting3 to open the air passage on its down stroke and the water passage on its up stroke for the admission of air and water, and to deliver air on .the up stroke, anda smaller plunger for delivering water from the water cylinder on the down stroke.

eener 2. A pump havinoA a rly'linder ol two dinineters, the upper larger portion formingl` .in air cylinder and the lower smells.' portion :i water cylinder, connections lor :nlinitt iop; an' and water to the air wylinder. :i oluogrer in the air cylinder noting; to admit :wir on its. r on its up stroke, und

down stroke and w to deliver air on the up stroke, n. smaller plunger for deliverine wa'er from the v. :iler cylinder on the down stroke, and Ilrli\."-.ry valves and a delivery chnm'pcr surrounding.; the unter cylinder.

3. 'The comliinstion olf 'wie pumps., meh pump having; a eylls'ldef.' ol" Lun dunner: s, the upper larp, fr portion formingt un :ur oy. nder and tl're lower snmller portion :t water cylinder, connections l'or :ulinittiuer :air und. water to the air cylinders and connecting the cylinders of the two punms, plunuers in llio air cylinders acting to admit air on their don n stroke and water on their up stroke, und to deliver air on the up stroke, and smaller plu n gers for delivering water from the water cylinders on the down stroke, the plungors ol e the two pumps' being timed to move simultaneously in opposite directions.

' 4. A pump having a cylinder of two diameters, the upper larger portion forming an air cylinder, and the lower smaller portion a water c linder, suction connections including a valve ess suction air passage for the air cylinder, a plunger in the air cylinder :ietiner to admit air on its down stroke an d deliver nir on its up stroke, and a smaller plunger lor ded livering water from the water cylinder on ils down stroke.

5. Apump having a cylinder ol' two diam eters, the u er larger portion formino,A :nl nii' cylinder and) the lower .smaller portion ny water cylinder, connections lor admitting.;` nir and water to the air cylinder7 a plunger in the air cylinder acting to admit air on its dou n stroke and water on its up stroke, und lo d liver an on the up stroke, und a snnsller plunger for delivering mater from tln` writer cylinder ou the down stroke. y v

5. The oomlnnation with the valvolosssnction, air cylinder l und water cylinder la. lice low the air cylinder. of plunggr-.r 'i lor theriir cylinder, plunger /r for the water eylindcr on the bottom of plunger fi., cl'ininlnfr lll lwlmv the cylinder K, and delivery valvls for tho air and water cylinders.

ln testimony whereof, l have hereunto sot my hand, in the presence of two .suoscribiintrr witnesses.

GEORGE P. ABQRN.

Witnesses:

JOHN J. FINLEY, JULIUS MEYEns.

fl (l llll

Images