US 296435 A
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Description (OCR text may contain errors)
HE. O. MURDOCK. DBGANTING PUMP.
No. 296,435. Patented Apr. 8, 1884.
INVBNTR y M WITNESSES ATTORNEY Unirse STATES nLvrn o. nunnoou, or New Yoan, n. Y.
SPECIFICATICN forming part of Letters Patent No. 296,435, dated April 8, 1884.
' Application filed August 17, 1883. (No model.)
cise, and exact terms as to enable any onel skilled in the art to which my invention appertains, or with which it is most `nearly connected, to make and use the same, reference being had to the accompanying drawings,
, makingpart of this specification, and to the letters and figures of reference marked thereon- Figure l of said drawings being'a vertical section taken longitudinally through'the center of said pump, and also through the center of a bottle, in which said pump is placed; Fig. 2, a side elevation of said pump and bottle, also partly in section; and Fig. 3, an end View of the pump-connection with the mouth ofthe bottle or other vessel in which it may be used.
This pump is of the pneumatic variety, operated by forcing an atmospheric pressure upon the liquid to be deeanted; and it is more especially intended to pump, draw, or deeant liquids out of bottles, kegs, barrels, jars, or other vessels, in which an air-pressure can be created and maintained upon the surface of the liquid.
The construction and operation ofthe pump is described as follows, the points of novelty being designated by the claims concluding this specication.
In the drawings, J represents a bottle, of which the mouth is shown by L. In this bottle isV set an india-rubber bulb, B, having a valve in its side at C; Through the center of this bulb a tube, A, passes down into the'liquid contained in the bottle. The upper end of the in dia-rubber bulb lits the tube A snugly, forming an air-tightj oint around it. The lower end of said bulb is in the form of a cork or bung fitting snugly in the mouth of the containing-vessel, but loosely on the tube, or having grooves I cut in the stopper H, Fig. 3, through which the air is forced from the bulb down upon the surface of the liuid in the bot tle. These grooves may be provided at their lower extremities with the valve M, opening downward, so that while admitting the flow of air from the bulb B into the bottle or other vessel it will prevent the passage ol' air from the bottleback into the bulb B,when thepressure of the hand is withdrawn from the same. By thus confining the air pumped into the bottle the liquid will be made to flow in a continuous stream from the mouth of the pump. This valve M is not, however, an element necessary to the successful operation of my invention, and if employed may be made of any desirable and well-known form.
Fig. 3 illustrates two plans on which the stopper may be constructed. In the plan X the grooves are cut directly around the tube. In the planY the grooves or channels are cut between the internal and external diameters of the tube, having an intervening riin of rubber on each side oi' the channels. Either plan may be adopted in constructing the stopper end of the bulb.
On the tube A a bulb, D, is made, into which avalve, E, is placed. This valve is made with a pendant, G, projecting upward in the tube to guide its action; and it is also made with a oross-bar, F, on said pendant to regulate the lift of the valve and keep it from stopping the tube in the upper end oi' the valve-bulb.l The valve may also be made with asmall pendant, Z, on its lower side, to insure its sitting always in exactly the same place; or the pendant may be omitted from both the upper and lower sides ofthe valve, and still make a very good pump; but if it is desired to make the pump thoroughly tight it is better to make the valve with the pendants and grind it to atight joint in the lower side or end of the valve-bulb. The valve and its bulb or chamber may be placed in the lower end of the tube, as in Fig. 1, or in the upper end, as in Fig. 2, it operating equally well in either position.
rPhe valve C in the india-rubber Abulb may be 'ofany known and convenient construction; or it may be omitted entirely, making simply a hole in the side of the bulb to be closed by the hand in operating the pump.
The tube A may be made of glass or metal or other material, and the bulb B of any suitable substitute for rubber.
rIhe operation oi' the apparatus is as follows: The bulb B being squeezed by the hand, the air is forced down upon and coniiued on the IOC surface of the liquid contained in the bottle, by which the liquid is driven up through the tube around the valve and delivered into any suitable receiver.
The points oi novelty in the apparatus conasist of the valve C in the bulb B, the valve E in the tube D, and the valve M at the mouths of the tubes I I. These features being omitted, the apparatus is old; but without them it Will lack many of the advantageous features which are secured by their use. Without these valves the stream issuing from the pump Will b e intermittent, and the liquid in the bottle or containing-vessel will be kept in continual lagitation by the return of the atmosphere through the tube A between successive impulses of the hand upon the bulb, but by the addition of thevalves C, M, and E the pump is not only made to throw a continuous stream, but it leaves the liquid in the containing-vessel in a continual state of quiescence. This novel feature in my improved pump enables me to decant liquids from bottles containing sediment Without disturbing the sediment, and also, Where the bottle contains liquids of different degrees of specific gravity, to pump out either liquid Without disturbing the other, or causing the liquids to be agitated and mingled together.
My improved pump may also be employed to decant liquids from deep barrels, carboys, or vessels Where one action of the bulb B does not inject a sufficient quantity of air into the vessel to force the liquid out of the mouth of the pump. It is obvious that if the valves E and M were omitted in this case the liquid I in the tube A without being forced from its mouth; but by employing either of the valves E or M this difficulty is entirely avoided by preventing the return of the liquid down the tube A between the successive strokes of the bulb-B.
' Vhen the valve M is employed, the bulb D and valve E may be omitted from the tube A.
All evaporation of the liquid may be prevented by inserting a cork in the hole C of the bulb B, or by making the valve M When at rest, close the oriiees I I. This is a matter of great importance in dealing with volatile liqnids.
Having thus described my invention, I claim-- l. .'Ihe combination of a containing-vessel, J, a oompressible bulb, B, provided With valve C, a tube, A, having a valve, E, and a stopper, H, provided with channels l, said tube passing entirely through the bulb B, and being free to slide verticallyth rough it, substantially las described, for the purpose specified.
2. The combination of a containing-Vessel, J, a oompressible bulb, B, provided with valve C, a tube, A, and a stopper, H, provided With channelsI 'and valves M, said tube passing en- ELVIN O. MURDOCK.
Witnesses: V J. EDGAR BULL, FRANK L. PLAss.
/tirely through the bulb B, and being free to