US192072A - Improvement in pumps - Google Patents

Description

H. A. JAMIESON.

, PUMP.

Patented J'une19,1877.

NPHERS. PNDTO-UTFOGRAPHER, WASHINGTON. D C.

PATENT: rFIcn.

HENRY A. JAMIESON, oF BRooKLYN, NEW YORK.

IMPROVEMENT IN PUMPS.

specification forming part of Letters Patent No. 592,072, dated June 19, 1877; application filed December 8, 1876.

To all whom "it may concern:

Be it known that l,HENRY A. JAMIESON,

of the city of Brooklyinin the county of Kings and State of New York, have invented a new and useful Improvement in Pumps; and I do hereby declare that the following is a full,

clear, and exact description of the same, refthe piston or plunger of the pump and its working-cylinder, whereby the cutting of the piston or plunger and its cylinder by the grit or impurities in the water is prevented, and consequently the efficiency and durability of the pump, as well as its relief from interior friction of the piston or plunger, are augmented.

Theinvention consists in a combination with the pump-cylinder, its piston or plunger, and the inlet and outlet valves of the pump of one or more cham hers arranged between said valves and the pump-cylinder, and in free communication with said cylinder,and a flexible diaphragm applied to such chamber or chambers, whereby, on charging the pumpcylinder, and, in case of duplicate interposed chambers, one of said chambers, with any suitable liquid, such as oil or water free from gritty impurities, the motion of the piston or pluugeris transmitted through the interposed liquid to the flexible diaphragm, and the latter alternately expanded and contrated with in the interposed chamber or chambers, to first fill said chamber or chambers with the water being pumped, and subsequently to discharge the same therefrom.

In the accompanying drawing, the invention is shown applied to a horizontal doubleacting piston-pump, such answering as well as any other pump to illustrate the novelty and utility of my invention.

Figure'l is a longitudinal vertical section of such a pump, with the invention applied,

and Fig. 2 avertical transverse section thereof on the irregular line a .10.

A is the pump-cylinder, and B its piston with attached rod b.

(J is the inlet pipe or passage of the pump, formed with suitable branches or openings, including apertures c 0, which are controlled by the inlet-valves D D.

E is the outlet or discharge passage of the pump, having apertures d d, which are controlled by the outlet or delivery valves 'G G.

Arranged between the pumpcylinder A and the inlet and outlet valves DG, are chambers H H,in free communication, respectively, by aperturese 0, with opposite ends of the pumpcylinder. Each of these chambers should be of the same cubical capacity, or thereabout, as the pump-cylinder, less the space occupied by the piston and its rod therein. Said chambers may be of any suitable shape, and are fitted with a flexible diaphragm, I, applied in a close manner to their upper ends, beneath the inlet and outlet valves of the pump.

Such flexible diaphragm may be either square, round, or of any other desired form, and may be made of india-rubber or any other suitable flexible material.

In the operation of the pump, supposing its piston B to be moving in direction of the arrow 3 the oil, clean water, or liquid with which the pump-cylinder A and either one of the chambers H has been charged is drawn from the left-hand chamber H through its aperture e to the back of the piston B by the motion of the latter, and the liquid in front of the piston discharged through the right-hand aperture e to the right-hand chamber H. This action causes the left-hand flexible diaphragm ,I to .be drawn down into the left-hand chamber H, as the diaphragm of the other chamber H had been previously drawn down into the latter, and thereby opens the left-hand inlet-valve D to admit the water being pumped to the top of the left-hand diaphragm I, while, or at the same time, the liquid in front of the piston B is forced up through theright-hand aperture 0, and the depressed diaphragm I of v the right-hand chamber H is accordingly raised, and made to expel the water, previously pumped or drawn into said chamber through its inlet-valve D, out through the i'i'ghthanil delivery-valve G. This action is repeated alternately for each chamber H, the flexible (liaphragms and inlet and outlet valves of the same successively operating to keep up a continuous pumping, and the Water which is pumped up and discharged always being prevented by the flexible diaphragms from entering the pumping-cylinder A.

In the case of a single piston, or of a-plu'nger-p'ump, but one of the chambers H with its flexible diaphragm, inlet -valve, and outletvalves, is necessary, and theworkingliquid interposed between said diaphragm and the I pump-cylinder or its piston need only be sufficient to fill the pump-cylinder space unoccupied by the piston and its rod, or to fill the single chamber H of like capacity.

Of course difl'ereut styles or constructions of pumps require difl'erent constructions or ar- HENRY A. JAMLESON.

Witnesses HENRY F. BROWN, FRED. HAYNES.

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