US105337A - Improvement in pumps - Google Patents

Description

J. I. HURLBUTT. PUMP.

No. 105,337.- Patented July 42,1870.

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JAMES-I. 'HURLBUTT,

0F NOR W A UK,

was Patent No, 105,331, dated my 12,1870.

mpnovnmmvr m PUMPS.

The Schedule referred to these Letters Patent and making part of the salts .To an whom it may concern:

Be it known that I, JAMEs 1.,HURLBU'1T, bfNorwalk, the county of .Huron and State of Ohio, have invented certain new and useful Improvements iu'Pumps; andI do hereby declare the following to whereby said plunger. is operated.

.It also comprises the employmentof a perforated ,tuhe, and-an air-chamber within the pump-stock,

whereby pressure-isexerted on the elevated water, causing a steady and uninterrupted flow, the air being allowed to escape withont breaking the stream, as

will be hereinafter more fully described.

In the accompanying drawing, wherein similar letters of reference indicate like. parts in .the two figiires- A A may represent the whole lcngthof the pumpstock, the lower part A, with the chest B, being submerged in the water at the bot-tom of the well, while the upper part A issituated above ground,

The chest B is secured to the outside .of the stock A, and communicates with "the interior" thereof by way of the opening a.

- The orifice b, in thc side of the chest at this point,

is covered by a valve,,c.

cl represents the valve and opening in the chest, through which, when the latter is sn'bmerged, water isldrawn into the chest by the action of the plunger D in the cylinder or barrel 0, which communicates with the chest, as clearly shown in fig. 2.

The plunger D is provided with a yoke, e, to which is pivoted one end of the. lever 1 This lever works on an axis or fulcrum, f, and moves in slots 'in the pump-stock and barrel, as shown.

The. outer end of lever I is connected by one or more rods, g, with the pump-handle or hand operating lever G, situated at a convenient height above grounib v H represents an air-chamber situated within the pump-stocknear its top, and communicating with a peribrated'tubcxll, which extends down the inside of' 'thepump-stock and through a plug, i, fitted therein j is another tube communicating with the air-chant her H, and bent or curved so that its lower end opens into the delivery-spout k of the pump. 'lhc operation is-as follows:

' "lhc upward motion of the o mrating-lever causes the descent of the plmigcr, whereby, (the chest being entirely submerged) water is drawn in at the opening (I and fills the barrel. 7 When the plunger ascends, it forces the water from the barrel into the pump-stock, from which it is discharged in. a continuous stream at the spent it. This continuous flow-is the result of the employmeut of the air-chamber and tubes, as will be now dc scribed.

, Were a'n air-chamber and tubes not employed, the bubbles formed by the action of the plunger in force 'ing water from the cylinder into the pump-stock, and gathering in .the center of the columnof water, would rise with the lattcr to the spent; and, the columnbrcaking at this poiut a portion. of, the bubbles would follow-the water out at the spout, while the remain.-

der would rise with that part of the column which ascends tethe top of the pump, and return in bubbles to and out-at the spout, causing a, break in the stream of ,water.

When theair-chambcr and tubes are employed, the. air contained in the column. of water in the stock finds its wayinto the long tube through the holes therein, and is forced up into the air-chamber (whence a portion of it escapes through the short bent pipe without breaking the stream) by the water, which, at

the downward stroke of the handle, fills not only the pump-stock, but also the long tube and the air-chamher, up to a certain point, according to the pressure of air in the chamber.

' I Asthc handle is raised, theair in the chamber exerts a pressure on the water in the vertical tube, and forces it therefrom through the perforations, and the valves being closed, the water. is made to run out at. the spout;

The s'hortlicnt tube being made smaller in dianr-- eter than the main tube, there always remains sufiicien't air in the chamber toiorce the air'down in the tube;

and out atthc holes therein, as just stated.

As the pressure of air on the water in" the tube is naturally greater than on that in the well, theprcss- 'ure is equalized by allowing the excess to escape from the tube by having the latter passthrough a plug and left open below, as described,-whereas, if the tube.

quantity of water with n. saving-of at leastv twenty' per cent of the power which would be necessary with out the appliances mentioned, and with a continuous der 0, plunger 1),:md lever- F, the air-chamber H,

flow. and tubes j h, and the hand-lever and connecting- Havhg thus described my invention, rod G 9, all constructed and arranged substantially as \Vhat I claim as new,'m1d desire to secure by Letdescribed, with the stock A A, and operating as set ters Patent, is-- forth.

1. The combination of the air-chamber, perforated JAMES I. HURLBUTT. tube h, and tube j, arranged andoperating substnutially as deseriberL. Witnesses:

2. Theimproved pump herein described, hzwingits ETHAN A. PRAY, essential features, viz., the submerged chest B, cylin- SIMEON F. ROGERS.

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