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Publication numberUS683143 A
Publication typeGrant
Publication dateSep 24, 1901
Filing dateFeb 14, 1901
Priority dateFeb 14, 1901
Publication numberUS 683143 A, US 683143A, US-A-683143, US683143 A, US683143A
InventorsWeslie M Rhoades
Original AssigneeWeslie M Rhoades
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 683143 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Patented sen-.24, I90].



(Application filed. Feb. 14. 1901;)

.2 Sheets-Shoot I.

(No Model.)

shw ns Wi'igzsses ff W THE NORRIS PEFERS no. Moniumnv. WASHINGTON, D n.

Patented Sept; 24, |9o|.

w. m. RHOADES,


(Application filed Feb. 14, 1901.)

2 Sheets-Shoat 2.

(No Model.)

' WES-LIE MnnoAnEs, oFJoPLin, MIsso'ttaL PU M P. 1 -j SPECIFICATION forming part of Letters Patent No. 683,143, dated. September 24, 1901." i

. Application filed February 1t, 1 01. Serial No. 47,332. (No model.)

T at], whom it 11mg; concern/Pi" I or ports being controlled by separate in Beitknownthatl, WESLIE M, RHOADES, a. wardly-openinjg fiapjvalves 16, 17, and 18, 1 citizen of the United States, residing at 'Jop-. respectively, having stems that are mounted I j lin, in the county of Jasper andState of Misupon pins 19, passed inwardly through the a, souri, have invented a new and useful Pump, side of the chamber, the stems of the valves a of which the following is a specification. being held against displacement longitudi- A This invention relates to pumps in general, nally-of the pins by lugs within the several fl and more particularly to the class of duplex compartments and with which the pins en-' 'p'umps; ('nd it has "for its object-to'providea gage. A passage 21 connects the compartio construe ion wherein two cyliiiders may. be mcnt 14 with the adjacent end of the chamt. a made .to'take the place and to do the work of, ber ll around one end of the cylinder, and

, "l'our cylinders of lesser capacity. this passage communicates with the end of f p A further object of theinvention is to pro- Ithe cylindeiafA second passage 22 connects vide a pump particularly adapted for use in the compartment 12 with the opposite end of Y i5 minework, being so constructed that it may the chamber 11 and passes throughthe adja* "be hung from a cable in the mine-shaft and cent end of cylinder 6. The compartment 13 -."j

' will be equally operable in all positions. communicates with cylinder 6 at a point mid= Further objects and advantages of the iu- .wayof the ends thereofiand at adiametrically 1 vention will be apparent from the following opposite pointiis a passage 23, which commu-fl',

zodescriptton. .1; r J nicates with the chamber 11. The passages 4 In the drawings forming a portion of this 21, 22, and 23:11; their points of communicaj' specification, and in which like numerals of tion with chamber 11 form outlet-ports from referenceindicatesimilarpartsin the'several the cylinder, and these'ports are provided vie'ws,F1gure1is alongitudinal section taken with outlet-valves 24, 2 5, and 2G, respec 25 throughfboth the steam and pump cylinderstively. From the chamber 11 leads an ex and including the valve-chambers M the haust-pipe 27,"through which the water from; pump-cylinders, the valves being shown in the pump is forcedfl I .1; elevation. Fig. 2 isa longitudinal section of In the pump-cylinder 6 are disposed two the steam-cylinderwith the-steam-che'st and pumping-pistons and 31, while in thecyl 30 the cut-efl3 valve therein, the section being inder 5 are two pistbns 32 and 33, the piston i a gh g $0311? T W in F g- '1- 30 and 33 beinglconnected by a hollow piston Fig. 3 is] a plan view of the valve-seatin the rod 34., passing through stuffing-boxes in thef steam-chest. Fig. 4 is a plan view of the cutheads 8 and 9 of thecylinders, and the piston-2 off valve of the steam-chest. rod is of suchlengtli that each of the connect- I g 35 Referring now to the drawings, the present ed pistons may include one-half of its cylin-f pump c mpl'ises a steam-cylinder 5 and a der in its stroke. When. piston 33 is at the I v piJmp-cvlinder 6,which are coniiected in axial inner end of its cylinder-that is, the end ad-i 1 alineme tby means of a skeleton casting 7,, jacent to the pump-cyli11der-piston 3O liesincluding two end plates 8 and"), which form' with its lower 'end at the passage 23, and whenf the heads for the mutually-adjacent 'ends of the piston'30 is, raised to its limit, as shown? the'two cylinders. A description willgbe first in Fig. 1, the upper end of piston 38 is just p given ofthe pump-cylinder and its 01 'eration below the central point of cylinder 5. I As the andthei'icf the steam-cylinder,-with the mech piston 30 moves down it draws water from fl anism that actuates the pumping-pistons. compartmentl i into the upper end of its'cyl 5 The p imp-cylinder, as showmhas a. sueinder and forces water ahead of it through} ti 'n-chetmber 10 at one side and'an exhaust}, the'passage 2t}, liftingvalve 25 and passing. 1 chamber 11 at the opposite side, these chain-i into chamber 11, from which it passes through brs running longitudinally of thee liuderi {the exhaust-pipe. fWhenthe piston '3 mov alid throughout its length. [The s lotion x upwardly, valye 16;clo ses,valve 25 closes, and "5c chamber is divided into three ficompar tmentsj .valves 17 truth-24 open, so thatthe water above '12, 13, "and it, which cemnlu'picate'gjw ithgag thegpiston is forcedfth rough the port' conf suction pipe 15, the communicating p's's es ye-24 m nto cham 1 .5 36

water is drawn through valve 17 into the cylinder 6 below the piston. I a y The piston 31 is connected with the piston 32 by means of a rod 35, which is passed through the hollow rod 34 and through stuff- 7 ing-hoxesin the ends of the hollow rod, and this rod'35 is of such length that when the i piston 31 is at the lower end of its cylinderti the'piston 32 will lie with its lower endjust V ton 32 is at the upper end of its movement the pistou31 will lie with its upper end just below the passage 28. Thus if the piston 32 be given corresponding movement and in its a upward movement will draw water into the lower portion of cylinder 6 through passage 2 22 from compartment 12 and will force wa through the passage 23 into the chamber 11.

. water from the lower end of the cylinder through valved passage 22 into chamberll, while water is drawn into the cylihder above the pjston'hl from compartment Fr that if pistons 32 and 33 are moved first away pistohs 3O gtndBl. will be moved first toward i each other'jand then away from each other,

1 f t and then water will be forced from the'end 35 portions while water is being drawn into the t central pontion. Thus the central body of ends when (the pistons move in one direction, .while two bodies of water, each .sr halfithe L40 bulk of the central body, are acted upon at diameter as that shown and with the same stroke of piston. With this con tructi'on a 1: were gused. 1 To thus actuate'the !pistons. 32

a val *e mechanism and ports, a follows:

the ends of the cylinder through the passages and 46, while the port 41 communicates 1 with the cylinder at a point intermediate 01'' to the steal h-exhaust pipe 43. --T;hef-ste" mpg 50, provided with a stutfing-bo f ess,14a i above the center of cylinder 5, and when pie-- be reciprocated in its cylinder piston 31 will- 'ter from the upper portion of the-cylinder 'Thedownward movement of piston 31 forcesin the above description it; I ill be seen fromeach hther and then towardfleach other.

- with the result that water will be forced from the central portion of cylinder 6'while it is a being drawn intovthe end portions thereof;

water wheh expelled is acted upon at'both one end when the pistons are traveling apart. The resultfiis of course the same as if two, pump-cylinders were'used', each 5f the same.

" single cylii'lder is used, while thf stroke of each pistonflis no more than if twti cylindersand 33, steam is supplied theret through the side of the cylinder 5is a steamformed fouij equidistant ports 41, 42 4 a 7 e ports 42 and 48 communicating with its ends thrhugh passage 47. .Port 46 leads chcstfihas a leap-plate 49, in whichj'is ab far+ 5 1, thia- V g I suction-pipe forthe compartments,inwardly I inhthifsbeafiing is mountedt'anoscillatory 1 -ber,.- said [ports j. having;

will be out of registry withports 42 and43, and when ports and 56 are iniregistry with ports 42 and 43port 54 will be out of 7 registry with port 41. In the under side ofv the valve 53 are sector-shaped recesses, indicated by dottedlines as 57, 58, and 59, and; these recesses communicate and are so positioned that when ports 54 and 41 are in registration recesses 58 and 59 will communicate with ports 42, 43, and 44, so that the ends of. the cylinder will be connected with'the exhaust. When the disk is moved to register ports 55 and 56 with 42 and 43, then recess 57 communicates with port 41 and recess 59 with the port 44, so that the central portion-' of the cylinderexhausts and the end por-,i tions are receiving steam. Thus it will be seen that by oscillating the valve 53 steam may be admitted to the adjacent or inner faces of the pistons 32 and 33 and then to the outer faces thereof tomove the pistons first away from each other and then toward each other to conversely move the pumping-'pistons, with the results? above given. To os-'Y cillate the valvej'53, the shaft 52 is provided with a rocker-arm 60 at its outer end and which is connected with a rocker 61 by means of a connecting-rod 62; this rocker 61 being pivoted to a bracket 63 upon the cylinder 5.- A striker-rod 64is mo'untedin stuffing-boxes 1 in the adjacenten'dsoi the cylinders 5 and 6 and carries a cross -head 65, with which the end of the rocker 61-iis connected in such' I manner that as the striker-rod is reciprocated the rocker will be operated to oscillate the cut-off valve 53. The ends of the striker-rod lie in the paths of mdvement of the pistons 33 and 30 for engagement thereby alternately V to reciprocate the rod; f y

"lo suspend the pump in workingpositiou, a bail 66 is connctedfwith the sidesof the cylinder 5 and isfadapted for attachment of a tackle there'toi' Also to facilitate access to the valves 24, 25; and 26 hand-holes67 are formed in the wall of chamber 11 opposite to the valves and are provided with covers, as. shown. Furtherihorepit will be noted that" the stuffing-boxesupoii the'pistons 30and 33 are provided with locking-caps 68,'which set down over the adj ustahle glands of the boxe and prevent rotatioufthese caps being so curely attached to the-ends of the pistons.

What is claimed is- 1U 1. A duplex pump cemprising steam andwater cylinders disposed in axial alinementy an iulet-chamhertor the water-cylinder in; cluding separate compartments communicat ing with the center and ends of the cylinder respectively,the cdmpa tinent atone end com-f; municatingaround the 'end of the cylinder, a -I opening valves disposed to control the com munications between the compartments and f pipe, ports connecting the center andends ff the water-cylinder; with the exhaust-chat outwardly opening 1v stonsin thest m-cylinde'r; pistons in the water-cylinder,connections between the corresponding pistons of the cylinders, and means for supplying steam alternately between and at the outer ends of the pistons of the steam-cylinders to reversely move the water-pistons. I

2. A duplex pump comprising steam and water cylinders disposed in axial alinement, a piston in each cylinder having a common hollow piston-rod, additional pistons in the cylinders disposed beyond the outer ends of the first pistons and having a common piston-rod passed through the hollow rod, an inlet-chamber having ports communicating with the ends and central portion of the water-cylinder, asuction-pipe havingindividual connections with the ports, inwardly-opening controlling-valves for the ports, an exhaust-chamber,ports connecting the exhaustchamber with the end and central portions of the Water-cylinder, outwardly-opening controlling-valves for said ports, and a valve mechanism having actuating means disposed for operation by a piston in the water-cylinder for directing steam between and at the outer ends of the steam pistons alternately.

3. A duplex pump comprising steam and water cylinders disposed in axial alinement, a casting connecting the adjacent ends of the cylinders and including plates forming heads for the cylinders, pistons in the cylinders and having a common hollow piston-rod, additional pistons in the cylinders beyond the first-named pistons and having a common rod passed through the hollow cylinder, inlet and exhaust chambers for the water-cylinder having valved ports communicating with the central portion and ends of the cylinder, a valve mechanism for the steam-cylinder adapted to direct steam between and at the outer ends of the steam-pistons alternately, a striker-rod having its ends disposed slidably in the adjacent heads of the cylinders for alternate engagement by the innermost pistons, and connections between said rod and cut-off valve for operating the latter.

4. A pump comprising alining steam and water cylinders having pistons therein, a hollow rod connecting the pistons, additional pistons beyond the first-named pistons and having a common rod passed through the hol low rod, inlet and exhaust chambers disposed at opposite sides of the water-cylinder, said inlet-chamber including separate compartments communicating with the central and end portions of the cylinder respectively, a

suction-pipe communicating with the separate compartments, controllingvalves between said pipe and compartments, valved ports between the exhaust-chamber and the central and end portions of the water-cylinder respectively, means for directing steam between and at the outer ends of the steampistons alternately, said means having actuating mechanism disposed in the path of movement of one of the pistons in the watercylinder for operation thereby and a suspending-bail connected with the steam-cylinder.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

v WESLIE M. RHOADES. Witnesses:

L. L. KING, H. T. MoKnn.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4687424 *Jun 19, 1986Aug 18, 1987Forschungsgesellschaft Fuer Biomedizinische Technik E.V.Redundant piston pump for the operation of single or multiple chambered pneumatic blood pumps
Cooperative ClassificationF02B71/00