US104289A - Improvement in pumps - Google Patents

Description

MPEIERS. PHOTO-LITHOGRAFHR. WASHINGTON D C iiiuitrti taire EDMUND EDWARDS, OF WESTMINSTER, ENGIJAND.

Letters PatentN .104,289, dated June 14,1870; patented iu .England August (i, i868.

The Schedule referred to :in these Letters Fatemi: and making part of the same Mem- To all whom it may concern.:

Beit known that I, EDMUND EDWARDS, of Buckingham street, in the city otvWestminster, England, civil engineer, a subject ot' the Queen of Great Britihain, have invented or discovered new and useful f Iniprovemeuts in Pumps and I, the said EDMUND EDWARDS, do' hereby declare the nature of the said` invention, and in what manner the same is to be pei'- formed, to be particularly described and ascertained in and by the followingr statement thereof; that is to say- This invention has for its object improvements in pumps, and theimprovements relate mainly to that class oi' pumps in which iiexible rings are employed in place of pistons or buckets.

.The drawing hereunto annexed shows a 'vertical section of a hand-lift pump, constructed according to "my invention.

A is a tube or barrel, to the lower end of which the M.suction-pipo is connected. lhe upper end of the tube A is expandedinto a cup-shape.

B is another tube, ot' larger diameter, which is screwed to A, with the flexible ring C between them, and which is formed with a delivery-spout B.

The center of the flexible ring is held between a flange formed around the lower end of a short tube, B, anda ring, E, which lits around the upper end of the short tube.

l The upper end ot' this tube forms a scat for the .valve F, which is a loose disk of vulcanized India rubber, orotlier flexible material two or more radial arms, D', passing across the water-way through the tube D,

- falso serve to support the valve.

.The valve is prevented from working od' its seat by two (or itmight be more) arms, G G, radiating from a central point above the disk, and bolted or attached at their outer ends to the ring E. v

These arms allow the valve to rise suiiciently from its seat to allow of the free passage of water through it on' the down-stroke.

lhe outer edge of the ring E is turned up, as shown, so that when the pump is at work the valve will al- ""ways be covered with water.

Valves thus constructed may be adapted to the flexible diaphragms of otlicixconstructions of diaphragm pumps.

' The arms G G; where they meet together, carry a pin, H, formed with a head. AThis pin is embraced by a curved link, K, which, at its upper end, is jointed to the short arm of a lever, Ii, the longer arm of which forms the lever-handle -for working the' pump.

The curved link K, near its lower end, is also formed with a projection to bear againsttlie side of the tube B.

By thus jointing the short lever-arm of the pumpv-handle to the link'K at a point intermediate between the center of the diaphragm an d the side. oi' me tube B, I am enabled to employ adia ihragm oi large diameter with a comparatively short stroke, while the end of the lower end ot' the. lilik, working agaiust'the side of the tube B, prevents any undue strain coming upon any part ot' the diaphragm, as it enablesV an approximately vertical to-and-fro movement to he given the center of the diaphragm.

A certaim amount oi' free play is allowed between the pin H and the link'l, where it embraces it, and by this means a still closer iuuiroximatiou to a vertical movement is given to the center of the diaphragi'u.

Where the ond ofthe arm ,li works against thc side of the tube l, a roller may be applied to it.

The piu upon which the lever-handle ot" the pump works is carried by a small upright bracket, L, the

lower end ot' which is formed 'to embrace the upper edge of the tubo B, and the bracket L1 can be slid around the upper edge ot' the tube, and be iixed to it in any desired posit-ion.

The arm K heilig able to turn freely around the pin H, allows of the hi'acket ILl being thus moved into any desired position- In cases where it is not required to move the brucket carrying the lia-udle, it lan be iixicd to the upper part ot' the pump, and the curved arm Ii can then he attached to, or form part of the-ring Il.

M is a cap for covering 4over the upper end of thetube I5. A slotis formed in it to fit over the bracket Ll.

This cap might, if desired, be arranged to turn up as on 'a hinge-joint upon thc samepin as that-on which the lever-handle works.

N is a valve at the top oi' the suetionLpipe,

The valve-seat is of a conical forni, as shown, and around the upper end ot' the* movable portion ot' the valve is a groove, into which is sprung a ring ot' vulcanized India rubber.

The movable portion ot' the valve. is also formed with a tail-piece of three leaves or feathers, and of suoli a length that the valve cannot get out of place unless the diaphragm be removed. Valves for other kinds ot' pumps may be simiiarly constructed.

The several parts ot' the pump are so shaped that they may be cast to i'orni and put together iii their rough state with little or no fitting, and may then be ready for use; and by this means `the pumps may be constructed cheaper, andbe more durable andciiicient than pumps 4as heretofore made. p

Pumps, such as above described, may also be formed into force-pumps by omitting the spoutou the tube B, and loadingpfroni the latter a delivery-pipe in place of A covering it over with a cap or cover, as abo vo described.

In this case .I form a water-#tight joint at the point 4 where the lever-liandle passes through the tube B, by making the center or axis upon which the handle turns pass through zt stuing-box, the lever working the diaphragm being,l within thestu'ng-box, and the haudle outside ot' it.

'lhe diaphragm of the pump muy be made of vulcanized Indie rubber, leather, corrugated sheet motel, or other suitnole inztteriul, and the vnlves'mnl czisings of the pump may be of metal or earthenwure.

Vliet I claim isv The combination of the annuler flexible diaphragm,

`the short tube and the ring, clamping the inner edge o-the said dinphrzig'm between them, and forming zt seat for the discharge-velue; all these parts being constructed to operate in combination :is set forth.

' Also, the combination of the discharge-vulve, the short tube on which it rests, and thel cup-shaped ring which surrounds it in such ina-nner that the valve is always kept covered b; water; all those p arts bein g constructed to operate in combination es set forth.

`Also, the combination of the annular flexible diaphragm, the clmnpinf-ring and short tube, the diskformedv dischmge-vztve, and the radial arms which forin the onge for the said discharge-valve :bt-bese parts being constructed to operette in combination as set forth.

Also, the cinnbinntion of the annular flexible dinphragm, the disf'lxmge-vzilve, the clamping-ring and short tube, thc gri-voted curved connecting-link, `:tud the lever-arm.; all these parte being constructed to operate in combination ats set forth. I

Also, the combination of the pump-barrel, the levcrarm, the pivoted curved link lztnd its guiding projection, with the cage of the discharge -va-lve and the operate in combination its hereinbefore set forth.

Also, 'the combination of the conical valve-seat,

with :t puppet-valve constructed with its periphery grooved, :nn with zt ring` of India rubber in said groove, :is hcl'orc ect forth.

EDMUND EDVARD'S.

Vitiiesses:

Roer. i5. Mom. j Street, London..4

liexible diaphragm fill these ports being constructed to

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